Merge branch 'master-v3' into master-v3

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.13 as builder
+FROM golang:1.14 as builder
 WORKDIR /app
 COPY . .
 RUN make build && bin/k3d version

cmd/create/createCluster.go

@@ -25,6 +25,7 @@ package create
 import (
 	"fmt"
 	"os"
+	"time"
 
 	"github.com/spf13/cobra"
 
@@ -50,8 +51,17 @@ func NewCmdCreateCluster() *cobra.Command {
 		Long:  `Create a new k3s cluster with containerized nodes (k3s in docker).`,
 		Args:  cobra.RangeArgs(0, 1), // exactly one cluster name can be set (default: k3d.DefaultClusterName)
 		Run: func(cmd *cobra.Command, args []string) {
+			// parse args and flags
 			cluster := parseCreateClusterCmd(cmd, args, createClusterOpts)
-			if err := k3dCluster.CreateCluster(cluster, runtimes.SelectedRuntime); err != nil {
+
+			// check if a cluster with that name exists already
+			if _, err := k3dCluster.GetCluster(cluster, runtimes.SelectedRuntime); err == nil {
+				log.Fatalf("Failed to create cluster '%s' because a cluster with that name already exists", cluster.Name)
+			}
+
+			// create cluster
+			if err := k3dCluster.CreateCluster(cmd.Context(), cluster, runtimes.SelectedRuntime); err != nil {
+				// rollback if creation failed
 				log.Errorln(err)
 				log.Errorln("Failed to create cluster >>> Rolling Back")
 				if err := k3dCluster.DeleteCluster(cluster, runtimes.SelectedRuntime); err != nil {
@@ -60,6 +70,8 @@ func NewCmdCreateCluster() *cobra.Command {
 				}
 				log.Fatalln("Cluster creation FAILED, all changes have been rolled back!")
 			}
+
+			// print information on how to use the cluster with kubectl
 			log.Infof("Cluster '%s' created successfully. You can now use it like this:", cluster.Name)
 			fmt.Printf("export KUBECONFIG=$(%s get kubeconfig %s)\n", os.Args[0], cluster.Name)
 			fmt.Println("kubectl cluster-info")
@@ -69,7 +81,7 @@ func NewCmdCreateCluster() *cobra.Command {
 	/*********
 	 * Flags *
 	 *********/
-	cmd.Flags().StringArrayP("api-port", "a", []string{"6443"}, "Specify the Kubernetes API server port (Format: `--api-port [HOST:]HOSTPORT[@NODEFILTER]`\n - Example: `k3d create -m 3 -a 0.0.0.0:6550@master[0] -a 0.0.0.0:6551@master[1]` ")
+	cmd.Flags().StringP("api-port", "a", k3d.DefaultAPIPort, "Specify the Kubernetes API server port (Format: `--api-port [HOST:]HOSTPORT`\n - Example: `k3d create -m 3 -a 0.0.0.0:6550` ")
 	cmd.Flags().IntP("masters", "m", 1, "Specify how many masters you want to create")
 	cmd.Flags().IntP("workers", "w", 0, "Specify how many workers you want to create")
 	cmd.Flags().String("image", fmt.Sprintf("%s:%s", k3d.DefaultK3sImageRepo, version.GetK3sVersion(false)), "Specify k3s image that you want to use for the nodes")
@@ -77,16 +89,13 @@ func NewCmdCreateCluster() *cobra.Command {
 	cmd.Flags().String("secret", "", "Specify a cluster secret. By default, we generate one.")
 	cmd.Flags().StringArrayP("volume", "v", nil, "Mount volumes into the nodes (Format: `--volume [SOURCE:]DEST[@NODEFILTER[;NODEFILTER...]]`\n - Example: `k3d create -w 2 -v /my/path@worker[0,1] -v /tmp/test:/tmp/other@master[0]`")
 	cmd.Flags().StringArrayP("port", "p", nil, "Map ports from the node containers to the host (Format: `[HOST:][HOSTPORT:]CONTAINERPORT[/PROTOCOL][@NODEFILTER]`)\n - Example: `k3d create -w 2 -p 8080:80@worker[0] -p 8081@worker[1]`")
-	cmd.Flags().IntVar(&createClusterOpts.WaitForMaster, "wait", -1, "Wait for a specified amount of time (seconds >= 0, where 0 means forever) for the master(s) to be ready or timeout and rollback before returning")
+	cmd.Flags().BoolVar(&createClusterOpts.WaitForMaster, "wait", false, "Wait for for the master(s) to be ready before returning. Use `--timeout DURATION` to not wait forever.")
+	cmd.Flags().DurationVar(&createClusterOpts.Timeout, "timeout", 0*time.Second, "Rollback changes if cluster couldn't be created in specified duration.")
 
 	/* Image Importing */
 	cmd.Flags().BoolVar(&createClusterOpts.DisableImageVolume, "no-image-volume", false, "Disable the creation of a volume for importing images")
 
 	/* Multi Master Configuration */
-	// multi-master - general
-	// TODO: implement load-balancer/proxy for multi-master setups
-	cmd.Flags().BoolVar(&createClusterOpts.DisableLoadbalancer, "no-lb", false, "[WIP] Disable automatic deployment of a load balancer in Multi-Master setups")
-	cmd.Flags().String("lb-port", "0.0.0.0:6443", "[WIP] Specify port to be exposed by the master load balancer (Format: `[HOST:]HOSTPORT)")
 
 	// multi-master - datastore
 	// TODO: implement multi-master setups with external data store
@@ -161,6 +170,9 @@ func parseCreateClusterCmd(cmd *cobra.Command, args []string, createClusterOpts
 		network.Name = networkName
 		network.External = true
 	}
+	if networkName == "host" && (masterCount+workerCount) > 1 {
+		log.Fatalln("Can only run a single node in hostnetwork mode")
+	}
 
 	// --secret
 	secret, err := cmd.Flags().GetString("secret")
@@ -168,70 +180,27 @@ func parseCreateClusterCmd(cmd *cobra.Command, args []string, createClusterOpts
 		log.Fatalln(err)
 	}
 
-	// --wait
+	// --timeout
-	if cmd.Flags().Changed("wait") && createClusterOpts.WaitForMaster < 0 {
+	if cmd.Flags().Changed("timeout") && createClusterOpts.Timeout <= 0*time.Second {
-		log.Fatalln("Value of '--wait' can't be less than 0")
+		log.Fatalln("--timeout DURATION must be >= 1s")
 	}
 
 	// --api-port
-	apiPortFlags, err := cmd.Flags().GetStringArray("api-port")
+	apiPort, err := cmd.Flags().GetString("api-port")
 	if err != nil {
 		log.Fatalln(err)
 	}
 
-	// error out if we have more api-ports than masters specified
-	if len(apiPortFlags) > masterCount {
-		log.Fatalf("Cannot expose more api-ports than master nodes exist (%d > %d)", len(apiPortFlags), masterCount)
-	}
-
-	ipPortCombinations := map[string]struct{}{} // only for finding duplicates
-	apiPortFilters := map[string]struct{}{}     // only for deduplication
-	exposeAPIToFiltersMap := map[k3d.ExposeAPI][]string{}
-	for _, apiPortFlag := range apiPortFlags {
-
-		// split the flag value from the node filter
-		apiPortString, filters, err := cliutil.SplitFiltersFromFlag(apiPortFlag)
-		if err != nil {
-			log.Fatalln(err)
-		}
-
-		// if there's only one master node, we don't need a node filter, but if there's more than one, we need exactly one node filter per api-port flag
-		if len(filters) > 1 || (len(filters) == 0 && masterCount > 1) {
-			log.Fatalf("Exactly one node filter required per '--api-port' flag, but got %d on flag %s", len(filters), apiPortFlag)
-		}
-
-		// add default, if no filter was set and we only have a single master node
-		if len(filters) == 0 && masterCount == 1 {
-			filters = []string{"master[0]"}
-		}
-
-		// only one api-port mapping allowed per master node
-		if _, exists := apiPortFilters[filters[0]]; exists {
-			log.Fatalf("Cannot assign multiple api-port mappings to the same node: duplicate '%s'", filters[0])
-		}
-		apiPortFilters[filters[0]] = struct{}{}
-
 	// parse the port mapping
-		exposeAPI, err := cliutil.ParseAPIPort(apiPortString)
+	exposeAPI, err := cliutil.ParseAPIPort(apiPort)
 	if err != nil {
 		log.Fatalln(err)
 	}
-
+	if exposeAPI.Host == "" {
-		// error out on duplicates
+		exposeAPI.Host = k3d.DefaultAPIHost
-		ipPort := fmt.Sprintf("%s:%s", exposeAPI.HostIP, exposeAPI.Port)
-		if _, exists := ipPortCombinations[ipPort]; exists {
-			log.Fatalf("Duplicate IP:PORT combination '%s' for the Api Port is not allowed", ipPort)
 	}
-		ipPortCombinations[ipPort] = struct{}{}
+	if exposeAPI.HostIP == "" {
-
+		exposeAPI.HostIP = k3d.DefaultAPIHost
-		// add to map
-		exposeAPIToFiltersMap[exposeAPI] = filters
-	}
-
-	// --lb-port
-	lbPort, err := cmd.Flags().GetString("lb-port")
-	if err != nil {
-		log.Fatalln(err)
 	}
 
 	// --datastore-endpoint
@@ -319,6 +288,7 @@ func parseCreateClusterCmd(cmd *cobra.Command, args []string, createClusterOpts
 		Network:           network,
 		Secret:            secret,
 		CreateClusterOpts: createClusterOpts,
+		ExposeAPI:         exposeAPI,
 	}
 
 	// generate list of nodes
@@ -336,7 +306,7 @@ func parseCreateClusterCmd(cmd *cobra.Command, args []string, createClusterOpts
 			MasterOpts: k3d.MasterOpts{},
 		}
 
-		// TODO: by default, we don't expose an API port, even if we only have a single master: should we change that?
+		// TODO: by default, we don't expose an API port: should we change that?
 		// -> if we want to change that, simply add the exposeAPI struct here
 
 		// first master node will be init node if we have more than one master specified but no external datastore
@@ -363,20 +333,6 @@ func parseCreateClusterCmd(cmd *cobra.Command, args []string, createClusterOpts
 		cluster.Nodes = append(cluster.Nodes, &node)
 	}
 
-	// add masterOpts
-	for exposeAPI, filters := range exposeAPIToFiltersMap {
-		nodes, err := cliutil.FilterNodes(cluster.Nodes, filters)
-		if err != nil {
-			log.Fatalln(err)
-		}
-		for _, node := range nodes {
-			if node.Role != k3d.MasterRole {
-				log.Fatalf("Node returned by filters '%+v' for exposing the API is not a master node", filters)
-			}
-			node.MasterOpts.ExposeAPI = exposeAPI
-		}
-	}
-
 	// append volumes
 	for volume, filters := range volumeFilterMap {
 		nodes, err := cliutil.FilterNodes(cluster.Nodes, filters)
@@ -405,15 +361,7 @@ func parseCreateClusterCmd(cmd *cobra.Command, args []string, createClusterOpts
 	/**********************
 	 * Utility Containers *
 	 **********************/
-
+	// ...
-	// TODO: create load balancer and other util containers // TODO: for now, this will only work with the docker provider (?) -> can replace dynamic docker lookup with static traefik config (?)
-	if masterCount > 1 && !createClusterOpts.DisableLoadbalancer { // TODO: add traefik to the same network and add traefik labels to the master node containers
-		log.Debugln("Creating LB in front of master nodes")
-		cluster.MasterLoadBalancer = &k3d.ClusterLoadbalancer{
-			Image:       k3d.DefaultLBImage,
-			ExposedPort: lbPort,
-		}
-	}
 
 	return cluster
 }

cmd/create/createNode.go

@@ -56,7 +56,7 @@ func NewCmdCreateNode() *cobra.Command {
 	// add flags
 	cmd.Flags().Int("replicas", 1, "Number of replicas of this node specification.")
 	cmd.Flags().String("role", string(k3d.WorkerRole), "Specify node role [master, worker]")
-	cmd.Flags().StringP("cluster", "c", "", "[REQUIRED] Select the cluster that the node shall connect to.")
+	cmd.Flags().StringP("cluster", "c", k3d.DefaultClusterName, "Select the cluster that the node shall connect to.")
 	if err := cmd.MarkFlagRequired("cluster"); err != nil {
 		log.Fatalln("Failed to mark required flag '--cluster'")
 	}
@@ -78,6 +78,7 @@ func parseCreateNodeCmd(cmd *cobra.Command, args []string) ([]*k3d.Node, *k3d.Cl
 	}
 
 	// --role
+	// TODO: createNode: for --role=master, update the nginx config and add TLS-SAN and server connection, etc.
 	roleStr, err := cmd.Flags().GetString("role")
 	if err != nil {
 		log.Errorln("No node role specified")

cmd/get/getCluster.go

@@ -91,7 +91,7 @@ func parseGetClusterCmd(cmd *cobra.Command, args []string) (*k3d.Cluster, bool)
 		return nil, headersOff
 	}
 
-	cluster := &k3d.Cluster{Name: args[0]} // TODO: validate name first?
+	cluster := &k3d.Cluster{Name: args[0]}
 
 	return cluster, headersOff
 }
@@ -102,7 +102,7 @@ func printClusters(clusters []*k3d.Cluster, headersOff bool) {
 	defer tabwriter.Flush()
 
 	if !headersOff {
-		headers := []string{"NAME", "MASTERS", "WORKERS"} // TODO: add status
+		headers := []string{"NAME", "MASTERS", "WORKERS"} // TODO: getCluster: add status column
 		_, err := fmt.Fprintf(tabwriter, "%s\n", strings.Join(headers, "\t"))
 		if err != nil {
 			log.Fatalln("Failed to print headers")

cmd/get/getKubeconfig.go

@@ -37,7 +37,7 @@ func NewCmdGetKubeconfig() *cobra.Command {
 
 	// create new command
 	cmd := &cobra.Command{
-		Use:   "kubeconfig NAME", // TODO: enable putting more than one name or even --all
+		Use:   "kubeconfig NAME", // TODO: getKubeconfig: allow more than one cluster name or even --all
 		Short: "Get kubeconfig",
 		Long:  `Get kubeconfig.`,
 		Args:  cobra.MinimumNArgs(1),
@@ -61,7 +61,7 @@ func NewCmdGetKubeconfig() *cobra.Command {
 	if err := cmd.MarkFlagFilename("output"); err != nil {
 		log.Fatalln("Failed to mark flag --output as filename")
 	}
-	// cmd.Flags().BoolP("all", "a", false, "Get kubeconfigs from all existing clusters") // TODO:
+	// cmd.Flags().BoolP("all", "a", false, "Get kubeconfigs from all existing clusters") // TODO: getKubeconfig: enable --all flag
 
 	// done
 	return cmd
@@ -75,5 +75,5 @@ func parseGetKubeconfigCmd(cmd *cobra.Command, args []string) (*k3d.Cluster, str
 		log.Fatalln("No output specified")
 	}
 
-	return &k3d.Cluster{Name: args[0]}, output // TODO: validate first
+	return &k3d.Cluster{Name: args[0]}, output
 }

cmd/get/getNode.go

@@ -41,7 +41,7 @@ func NewCmdGetNode() *cobra.Command {
 
 	// create new command
 	cmd := &cobra.Command{
-		Use:     "node", // TODO: set one or more names or --all flag
+		Use:     "node NAME", // TODO: getNode: allow one or more names or --all flag
 		Short:   "Get node",
 		Aliases: []string{"nodes"},
 		Long:    `Get node.`,

cmd/load/loadImage.go

@@ -77,7 +77,7 @@ func parseLoadImageCmd(cmd *cobra.Command, args []string) ([]string, []k3d.Clust
 	if err != nil {
 		log.Fatalln(err)
 	}
-	if cmd.Flags().Changed("tar") { // TODO: implement import from local tarball
+	if cmd.Flags().Changed("tar") { // TODO: loadImage: implement import from local tarball
 		log.Fatalf("--tar flag not supported yet '%s'", localTarball)
 	}
 

cmd/root.go

@@ -161,7 +161,7 @@ func NewCmdCompletion() *cobra.Command {
 		Use:   "completion SHELL",
 		Short: "Generate completion scripts for [bash, zsh, powershell | psh]",
 		Long:  `Generate completion scripts for [bash, zsh, powershell | psh]`,
-		Args:  cobra.ExactArgs(1), // TODO: add support for 0 args = auto detection
+		Args:  cobra.ExactArgs(1), // TODO: NewCmdCompletion: add support for 0 args = auto detection
 		Run: func(cmd *cobra.Command, args []string) {
 			if f, ok := completionFunctions[args[0]]; ok {
 				if err := f(os.Stdout); err != nil {

cmd/start/startNode.go

@@ -34,7 +34,7 @@ func NewCmdStartNode() *cobra.Command {
 
 	// create new command
 	cmd := &cobra.Command{
-		Use:   "node NAME", // TODO: allow one or more names or --all
+		Use:   "node NAME", // TODO: startNode: allow one or more names or --all
 		Short: "Start an existing k3d node",
 		Long:  `Start an existing k3d node.`,
 		Run: func(cmd *cobra.Command, args []string) {
@@ -52,10 +52,10 @@ func NewCmdStartNode() *cobra.Command {
 
 // parseStartNodeCmd parses the command input into variables required to start a node
 func parseStartNodeCmd(cmd *cobra.Command, args []string) *k3d.Node {
-	// node name // TODO: allow node filters, e.g. `k3d start nodes mycluster@worker` to start all worker nodes of cluster 'mycluster'
+	// node name // TODO: startNode: allow node filters, e.g. `k3d start nodes mycluster@worker` to start all worker nodes of cluster 'mycluster'
 	if len(args) == 0 || len(args[0]) == 0 {
 		log.Fatalln("No node name given")
 	}
 
-	return &k3d.Node{Name: args[0]} // TODO: validate and allow for more than one
+	return &k3d.Node{Name: args[0]}
 }

cmd/stop/stopNode.go

@@ -35,7 +35,7 @@ func NewCmdStopNode() *cobra.Command {
 
 	// create new command
 	cmd := &cobra.Command{
-		Use:   "node NAME", // TODO: allow one or more names or --all",
+		Use:   "node NAME", // TODO: stopNode: allow one or more names or --all",
 		Short: "Stop an existing k3d node",
 		Long:  `Stop an existing k3d node.`,
 		Run: func(cmd *cobra.Command, args []string) {
@@ -58,5 +58,5 @@ func parseStopNodeCmd(cmd *cobra.Command, args []string) *k3d.Node {
 		log.Fatalln("No node name given")
 	}
 
-	return &k3d.Node{Name: args[0]} // TODO: validate and allow for more than one
+	return &k3d.Node{Name: args[0]}
 }

cmd/util/filter.go

@@ -100,7 +100,7 @@ func FilterNodes(nodes []*k3d.Node, filters []string) ([]*k3d.Node, error) {
 
 		// if one of the filters is 'all', we only return this and drop all others
 		if submatches["group"] == "all" {
-			// TODO: only log if really more than one is specified
+			// TODO: filterNodes: only log if really more than one is specified
 			log.Warnf("Node filter 'all' set, but more were specified in '%+v'", filters)
 			return nodes, nil
 		}

cmd/util/ports.go

@@ -70,5 +70,5 @@ func ParseAPIPort(portString string) (k3d.ExposeAPI, error) {
 
 // ValidatePortMap validates a port mapping
 func ValidatePortMap(portmap string) (string, error) {
-	return portmap, nil // TODO: add validation of port mapping
+	return portmap, nil // TODO: ValidatePortMap: add validation of port mapping
 }

go.mod

@@ -18,7 +18,6 @@ require (
 	github.com/docker/go-events v0.0.0-20190806004212-e31b211e4f1c // indirect
 	github.com/go-test/deep v1.0.4
 	github.com/gogo/googleapis v1.3.0 // indirect
-	github.com/golang/protobuf v1.3.1 // indirect
 	github.com/google/go-cmp v0.3.0 // indirect
 	github.com/heroku/docker-registry-client v0.0.0-20190909225348-afc9e1acc3d5
 	github.com/imdario/mergo v0.3.7 // indirect
@@ -30,12 +29,14 @@ require (
 	github.com/opencontainers/runtime-spec v1.0.1 // indirect
 	github.com/sirupsen/logrus v1.5.0
 	github.com/spf13/cobra v0.0.5
+  github.com/spf13/cobra v1.0.0
+	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/syndtr/gocapability v0.0.0-20180916011248-d98352740cb2 // indirect
 	go.etcd.io/bbolt v1.3.3 // indirect
 	golang.org/x/net v0.0.0-20190812203447-cdfb69ac37fc // indirect
+	golang.org/x/sync v0.0.0-20190423024810-112230192c58
 	golang.org/x/sys v0.0.0-20190902133755-9109b7679e13 // indirect
 	golang.org/x/text v0.3.2 // indirect
-	golang.org/x/time v0.0.0-20190308202827-9d24e82272b4 // indirect
 	google.golang.org/grpc v1.23.0 // indirect
 	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
 	gotest.tools v2.2.0+incompatible // indirect

go.sum

@@ -10,18 +10,24 @@ github.com/Microsoft/go-winio v0.4.14 h1:+hMXMk01us9KgxGb7ftKQt2Xpf5hH/yky+TDA+q
 github.com/Microsoft/go-winio v0.4.14/go.mod h1:qXqCSQ3Xa7+6tgxaGTIe4Kpcdsi+P8jBhyzoq1bpyYA=
 github.com/Microsoft/hcsshim v0.8.6 h1:ZfF0+zZeYdzMIVMZHKtDKJvLHj76XCuVae/jNkjj0IA=
 github.com/Microsoft/hcsshim v0.8.6/go.mod h1:Op3hHsoHPAvb6lceZHDtd9OkTew38wNoXnJs8iY7rUg=
+github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
 github.com/OpenPeeDeeP/depguard v1.0.0/go.mod h1:7/4sitnI9YlQgTLLk734QlzXT8DuHVnAyztLplQjk+o=
 github.com/Shopify/logrus-bugsnag v0.0.0-20171204204709-577dee27f20d/go.mod h1:HI8ITrYtUY+O+ZhtlqUnD8+KwNPOyugEhfP9fdUIaEQ=
 github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6/go.mod h1:3eOhrUMpNV+6aFIbp5/iudMxNCF27Vw2OZgy4xEx0Fg=
+github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
+github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
 github.com/aws/aws-sdk-go v1.15.11/go.mod h1:mFuSZ37Z9YOHbQEwBWztmVzqXrEkub65tZoCYDt7FT0=
 github.com/beorn7/perks v0.0.0-20160804104726-4c0e84591b9a/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
+github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
+github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
 github.com/bitly/go-simplejson v0.5.0/go.mod h1:cXHtHw4XUPsvGaxgjIAn8PhEWG9NfngEKAMDJEczWVA=
 github.com/bmizerany/assert v0.0.0-20160611221934-b7ed37b82869/go.mod h1:Ekp36dRnpXw/yCqJaO+ZrUyxD+3VXMFFr56k5XYrpB4=
 github.com/bshuster-repo/logrus-logstash-hook v0.4.1/go.mod h1:zsTqEiSzDgAa/8GZR7E1qaXrhYNDKBYy5/dWPTIflbk=
 github.com/bugsnag/bugsnag-go v0.0.0-20141110184014-b1d153021fcd/go.mod h1:2oa8nejYd4cQ/b0hMIopN0lCRxU0bueqREvZLWFrtK8=
 github.com/bugsnag/osext v0.0.0-20130617224835-0dd3f918b21b/go.mod h1:obH5gd0BsqsP2LwDJ9aOkm/6J86V6lyAXCoQWGw3K50=
 github.com/bugsnag/panicwrap v0.0.0-20151223152923-e2c28503fcd0/go.mod h1:D/8v3kj0zr8ZAKg1AQ6crr+5VwKN5eIywRkfhyM/+dE=
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@@ -35,18 +41,21 @@ github.com/containerd/ttrpc v0.0.0-20190828172938-92c8520ef9f8 h1:jYCTS/16RWXXtV
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@@ -68,10 +77,15 @@ github.com/fatih/color v1.6.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5Kwzbycv
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@@ -98,6 +112,7 @@ github.com/gogo/protobuf v1.3.0 h1:G8O7TerXerS4F6sx9OV7/nRfJdnXgHZu/S/7F2SN+UE=
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@@ -121,6 +136,7 @@ github.com/golangci/misspell v0.0.0-20180809174111-950f5d19e770/go.mod h1:dEbvlS
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@@ -130,7 +146,11 @@ github.com/gorilla/handlers v0.0.0-20150720190736-60c7bfde3e33/go.mod h1:Qkdc/uu
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@@ -143,7 +163,9 @@ github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NH
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@@ -154,6 +176,7 @@ github.com/klauspost/cpuid v0.0.0-20180405133222-e7e905edc00e/go.mod h1:Pj4uuM52
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@@ -181,9 +204,11 @@ github.com/mitchellh/osext v0.0.0-20151018003038-5e2d6d41470f/go.mod h1:OkQIRizQ
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@@ -202,26 +227,40 @@ github.com/opencontainers/runtime-spec v1.0.1/go.mod h1:jwyrGlmzljRJv/Fgzds9SsS/
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@@ -259,43 +301,57 @@ github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81P
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@@ -317,6 +373,7 @@ golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGm
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 golang.org/x/tools v0.0.0-20190311215038-5c2858a9cfe5/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
@@ -333,9 +390,12 @@ google.golang.org/cloud v0.0.0-20151119220103-975617b05ea8/go.mod h1:0H1ncTHf11K
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8 h1:Nw54tB0rB7hY/N0NQvRW8DG4Yk3Q6T9cu9RcFQDu1tc=
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
 google.golang.org/grpc v0.0.0-20160317175043-d3ddb4469d5a/go.mod h1:yo6s7OP7yaDglbqo1J04qKzAhqBH6lvTonzMVmEdcZw=
+google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
+google.golang.org/grpc v1.21.0/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
 google.golang.org/grpc v1.23.0 h1:AzbTB6ux+okLTzP8Ru1Xs41C303zdcfEht7MQnYJt5A=
 google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
 gopkg.in/airbrake/gobrake.v2 v2.0.9/go.mod h1:/h5ZAUhDkGaJfjzjKLSjv6zCL6O0LLBxU4K+aSYdM/U=
+gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20141024133853-64131543e789/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
@@ -344,6 +404,7 @@ gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
 gopkg.in/gemnasium/logrus-airbrake-hook.v2 v2.1.2/go.mod h1:Xk6kEKp8OKb+X14hQBKWaSkCsqBpgog8nAV2xsGOxlo=
+gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v2 v2.0.0-20170812160011-eb3733d160e7/go.mod h1:JAlM8MvJe8wmxCU4Bli9HhUf9+ttbYbLASfIpnQbh74=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
@@ -351,6 +412,7 @@ gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gotest.tools v2.2.0+incompatible h1:VsBPFP1AI068pPrMxtb/S8Zkgf9xEmTLJjfM+P5UIEo=
 gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw=
+honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 mvdan.cc/interfacer v0.0.0-20180901003855-c20040233aed/go.mod h1:Xkxe497xwlCKkIaQYRfC7CSLworTXY9RMqwhhCm+8Nc=
 mvdan.cc/lint v0.0.0-20170908181259-adc824a0674b/go.mod h1:2odslEg/xrtNQqCYg2/jCoyKnw3vv5biOc3JnIcYfL4=

pkg/cluster/cluster.go

@@ -23,22 +23,28 @@ package cluster
 
 import (
 	"bytes"
+	"context"
 	"fmt"
 	"strconv"
 	"strings"
-	"sync"
 	"time"
 
 	k3drt "github.com/rancher/k3d/pkg/runtimes"
 	k3d "github.com/rancher/k3d/pkg/types"
 	"github.com/rancher/k3d/pkg/util"
 	log "github.com/sirupsen/logrus"
+	"golang.org/x/sync/errgroup"
 )
 
 // CreateCluster creates a new cluster consisting of
 // - some containerized k3s nodes
 // - a docker network
-func CreateCluster(cluster *k3d.Cluster, runtime k3drt.Runtime) error {
+func CreateCluster(ctx context.Context, cluster *k3d.Cluster, runtime k3drt.Runtime) error {
+	if cluster.CreateClusterOpts.Timeout > 0*time.Second {
+		var cancel context.CancelFunc
+		ctx, cancel = context.WithTimeout(ctx, cluster.CreateClusterOpts.Timeout)
+		defer cancel()
+	}
 
 	/*
 	 * Network
@@ -88,7 +94,7 @@ func CreateCluster(cluster *k3d.Cluster, runtime k3drt.Runtime) error {
 			return err
 		}
 
-		extraLabels["k3d.cluster.volumes.imagevolume"] = imageVolumeName
+		extraLabels["k3d.cluster.imageVolume"] = imageVolumeName
 
 		// attach volume to nodes
 		for _, node := range cluster.Nodes {
@@ -117,14 +123,16 @@ func CreateCluster(cluster *k3d.Cluster, runtime k3drt.Runtime) error {
 		// node role specific settings
 		if node.Role == k3d.MasterRole {
 
+			node.MasterOpts.ExposeAPI = cluster.ExposeAPI
+
 			// the cluster has an init master node, but its not this one, so connect it to the init node
 			if cluster.InitNode != nil && !node.MasterOpts.IsInit {
-				node.Args = append(node.Args, "--server", fmt.Sprintf("https://%s:%d", cluster.InitNode.Name, 6443))
+				node.Args = append(node.Args, "--server", fmt.Sprintf("https://%s:%s", cluster.InitNode.Name, k3d.DefaultAPIPort))
 			}
 
 		} else if node.Role == k3d.WorkerRole {
 			// connection url
-			connectionURL := fmt.Sprintf("https://%s:%d", generateNodeName(cluster.Name, k3d.MasterRole, 0), 6443)
+			connectionURL := fmt.Sprintf("https://%s:%s", generateNodeName(cluster.Name, k3d.MasterRole, 0), k3d.DefaultAPIPort)
 			node.Env = append(node.Env, fmt.Sprintf("K3S_URL=%s", connectionURL))
 			node.Labels["k3d.cluster.url"] = connectionURL
 		}
@@ -159,6 +167,12 @@ func CreateCluster(cluster *k3d.Cluster, runtime k3drt.Runtime) error {
 
 		// wait for the initnode to come up before doing anything else
 		for {
+			select {
+			case <-ctx.Done():
+				log.Errorln("Failed to bring up initializing master node in time")
+				return fmt.Errorf(">>> %w", ctx.Err())
+			default:
+			}
 			log.Debugln("Waiting for initializing master node...")
 			logreader, err := runtime.GetNodeLogs(cluster.InitNode)
 			defer logreader.Close()
@@ -167,7 +181,7 @@ func CreateCluster(cluster *k3d.Cluster, runtime k3drt.Runtime) error {
 				log.Errorln(err)
 				log.Errorln("Failed to get logs from the initializig master node.. waiting for 3 seconds instead")
 				time.Sleep(3 * time.Second)
-				goto initNodeFinished
+				break
 			}
 			buf := new(bytes.Buffer)
 			nRead, _ := buf.ReadFrom(logreader)
@@ -176,16 +190,13 @@ func CreateCluster(cluster *k3d.Cluster, runtime k3drt.Runtime) error {
 				log.Debugln("Initializing master node is up... continuing")
 				break
 			}
-			time.Sleep(time.Second) // TODO: timeout
+			time.Sleep(time.Second)
 		}
 
 	}
 
-initNodeFinished:
-
 	// vars to support waiting for master nodes to be ready
-	var waitForMasterWaitgroup sync.WaitGroup
+	waitForMasterWaitgroup, ctx := errgroup.WithContext(ctx)
-	waitForMasterErrChan := make(chan error, 1) // FIXME: we should do something different here, e.g. concurrently read from the channel and append to a slice of errors
 
 	// create all other nodes, but skip the init node
 	for _, node := range cluster.Nodes {
@@ -196,6 +207,8 @@ initNodeFinished:
 				continue
 			}
 
+			time.Sleep(1 * time.Second) // FIXME: arbitrary wait for one second to avoid race conditions of masters registering
+
 			// name suffix
 			suffix = masterCount
 			masterCount++
@@ -210,41 +223,59 @@ initNodeFinished:
 		}
 
 		// asynchronously wait for this master node to be ready (by checking the logs for a specific log mesage)
-		if node.Role == k3d.MasterRole && cluster.CreateClusterOpts.WaitForMaster >= 0 {
+		if node.Role == k3d.MasterRole && cluster.CreateClusterOpts.WaitForMaster {
-			waitForMasterWaitgroup.Add(1)
+			masterNode := node
-			go func(masterNode *k3d.Node) {
+			waitForMasterWaitgroup.Go(func() error {
+				// TODO: avoid `level=fatal msg="starting kubernetes: preparing server: post join: a configuration change is already in progress (5)"`
+				// ... by scanning for this line in logs and restarting the container in case it appears
 				log.Debugf("Starting to wait for master node '%s'", masterNode.Name)
-				// TODO: it may be better to give endtime=starttime+timeout here so that there is no difference between the instances (go func may be called with a few (milli-)seconds difference)
+				return WaitForNodeLogMessage(ctx, runtime, masterNode, "Wrote kubeconfig")
-				err := WaitForNodeLogMessage(runtime, masterNode, "Wrote kubeconfig", (time.Duration(cluster.CreateClusterOpts.WaitForMaster) * time.Second))
+			})
-				waitForMasterErrChan <- err
-				if err == nil {
-					log.Debugf("Master Node '%s' ready", masterNode.Name)
-				}
-			}(node)
 		}
 	}
 
-	// block until all masters are ready (if --wait was set) and collect errors if not
+	if err := waitForMasterWaitgroup.Wait(); err != nil {
-	if cluster.CreateClusterOpts.WaitForMaster >= 0 {
-		errs := []error{}
-		go func() {
-			for elem := range waitForMasterErrChan {
-				if elem != nil {
-					errs = append(errs, elem)
-				}
-				waitForMasterWaitgroup.Done()
-			}
-		}()
-		waitForMasterWaitgroup.Wait()
-		if len(errs) != 0 {
 		log.Errorln("Failed to bring up all master nodes in time. Check the logs:")
-			for _, e := range errs {
+		log.Errorln(">>> ", err)
-				log.Errorln(">>> ", e)
+		return fmt.Errorf("Failed to bring up cluster")
+	}
+
+	/*
+	 * Auxiliary Containers
+	 */
+	// *** MasterLoadBalancer ***
+
+	// Generate a comma-separated list of master/server names to pass to the proxy container
+	servers := ""
+	for _, node := range cluster.Nodes {
+		if node.Role == k3d.MasterRole {
+			log.Debugf("Node NAME: %s", node.Name)
+			if servers == "" {
+				servers = node.Name
+			} else {
+				servers = fmt.Sprintf("%s,%s", servers, node.Name)
 			}
-			return fmt.Errorf("Failed to bring up cluster") // TODO: in case of failure, we should rollback
 		}
 	}
 
+	// Create proxy as a modified node with proxyRole
+	lbNode := &k3d.Node{
+		Name:  fmt.Sprintf("%s-%s-masterlb", k3d.DefaultObjectNamePrefix, cluster.Name),
+		Image: k3d.DefaultLBImage,
+		Ports: []string{fmt.Sprintf("%s:%s:%s/tcp", cluster.ExposeAPI.Host, cluster.ExposeAPI.Port, k3d.DefaultAPIPort)},
+		Env: []string{
+			fmt.Sprintf("SERVERS=%s", servers),
+			fmt.Sprintf("PORT=%s", k3d.DefaultAPIPort),
+		},
+		Role:    k3d.NoRole,
+		Labels:  k3d.DefaultObjectLabels, // TODO: createLoadBalancer: add more expressive labels
+		Network: cluster.Network.Name,
+	}
+	log.Infof("Creating LoadBalancer '%s'", lbNode.Name)
+	if err := CreateNode(lbNode, runtime); err != nil {
+		log.Errorln("Failed to create loadbalancer")
+		return err
+	}
 	return nil
 }
 
@@ -252,6 +283,7 @@ initNodeFinished:
 func DeleteCluster(cluster *k3d.Cluster, runtime k3drt.Runtime) error {
 
 	log.Infof("Deleting cluster '%s'", cluster.Name)
+	log.Debugf("%+v", cluster)
 
 	failed := 0
 	for _, node := range cluster.Nodes {
@@ -262,27 +294,27 @@ func DeleteCluster(cluster *k3d.Cluster, runtime k3drt.Runtime) error {
 		}
 	}
 
-	// Delete the cluster network, if it was created for/by this cluster (and if it's not in use anymore) // TODO: does this make sense or should we always try to delete it? (Will fail anyway, if it's still in use)
+	// Delete the cluster network, if it was created for/by this cluster (and if it's not in use anymore)
-	if network, ok := cluster.Nodes[0].Labels["k3d.cluster.network"]; ok {
+	if cluster.Network.Name != "" {
-		if !cluster.Network.External || cluster.Nodes[0].Labels["k3d.cluster.network.external"] == "false" {
+		if !cluster.Network.External {
-			log.Infof("Deleting cluster network '%s'", network)
+			log.Infof("Deleting cluster network '%s'", cluster.Network.Name)
-			if err := runtime.DeleteNetwork(network); err != nil {
+			if err := runtime.DeleteNetwork(cluster.Network.Name); err != nil {
 				if strings.HasSuffix(err.Error(), "active endpoints") {
-					log.Warningf("Failed to delete cluster network '%s' because it's still in use: is there another cluster using it?", network)
+					log.Warningf("Failed to delete cluster network '%s' because it's still in use: is there another cluster using it?", cluster.Network.Name)
 				} else {
-					log.Warningf("Failed to delete cluster network '%s': '%+v'", network, err)
+					log.Warningf("Failed to delete cluster network '%s': '%+v'", cluster.Network.Name, err)
 				}
 			}
-		} else if cluster.Network.External || cluster.Nodes[0].Labels["k3d.cluster.network.external"] == "true" {
+		} else if cluster.Network.External {
-			log.Debugf("Skip deletion of cluster network '%s' because it's managed externally", network)
+			log.Debugf("Skip deletion of cluster network '%s' because it's managed externally", cluster.Network.Name)
 		}
 	}
 
 	// delete image volume
-	if imagevolume, ok := cluster.Nodes[0].Labels["k3d.cluster.volumes.imagevolume"]; ok {
+	if cluster.ImageVolume != "" {
-		log.Infof("Deleting image volume '%s'", imagevolume)
+		log.Infof("Deleting image volume '%s'", cluster.ImageVolume)
-		if err := runtime.DeleteVolume(imagevolume); err != nil {
+		if err := runtime.DeleteVolume(cluster.ImageVolume); err != nil {
-			log.Warningf("Failed to delete image volume '%s' of cluster '%s': Try to delete it manually", cluster.Name, imagevolume)
+			log.Warningf("Failed to delete image volume '%s' of cluster '%s': Try to delete it manually", cluster.ImageVolume, cluster.Name)
 		}
 	}
 
@@ -354,7 +386,16 @@ func populateClusterFieldsFromLabels(cluster *k3d.Cluster) error {
 				}
 			}
 		}
+
+		// get image volume // TODO: enable external image volumes the same way we do it with networks
+		if cluster.ImageVolume == "" {
+			if imageVolumeName, ok := node.Labels["k3d.cluster.imageVolume"]; ok {
+				cluster.ImageVolume = imageVolumeName
 			}
+		}
+
+	}
+
 	return nil
 }
 

pkg/cluster/kubeconfig.go

@@ -37,6 +37,7 @@ import (
 // GetKubeconfig grabs the kubeconfig file from /output from a master node container and puts it into a local directory
 func GetKubeconfig(runtime runtimes.Runtime, cluster *k3d.Cluster) ([]byte, error) {
 	// get all master nodes for the selected cluster
+	// TODO: getKubeconfig: we should make sure, that the master node we're trying to getch is actually running
 	masterNodes, err := runtime.GetNodesByLabel(map[string]string{"k3d.cluster": cluster.Name, "k3d.role": string(k3d.MasterRole)})
 	if err != nil {
 		log.Errorln("Failed to get master nodes")
@@ -49,8 +50,8 @@ func GetKubeconfig(runtime runtimes.Runtime, cluster *k3d.Cluster) ([]byte, erro
 	// prefer a master node, which actually has the port exposed
 	var chosenMaster *k3d.Node
 	chosenMaster = nil
-	APIPort := "6443"      // TODO: use default from types
+	APIPort := k3d.DefaultAPIPort
-	APIHost := "localhost" // TODO: use default from types
+	APIHost := k3d.DefaultAPIHost
 
 	for _, master := range masterNodes {
 		if _, ok := master.Labels["k3d.master.api.port"]; ok {

pkg/cluster/node.go

@@ -24,6 +24,7 @@ package cluster
 
 import (
 	"bytes"
+	"context"
 	"fmt"
 	"strings"
 	"time"
@@ -125,8 +126,6 @@ func CreateNode(node *k3d.Node, runtime runtimes.Runtime) error {
 			return err
 		}
 		log.Debugf("spec = %+v\n", node)
-	} else {
-		return fmt.Errorf("Unknown node role '%s'", node.Role)
 	}
 
 	/*
@@ -164,19 +163,14 @@ func patchMasterSpec(node *k3d.Node) error {
 	// role label
 	node.Labels["k3d.role"] = string(k3d.MasterRole) // TODO: maybe put those in a global var DefaultMasterNodeSpec?
 
-	// extra settings to expose the API port (if wanted)
+	// Add labels and TLS SAN for the exposed API
-	if node.MasterOpts.ExposeAPI.Port != "" {
+	// FIXME: For now, the labels concerning the API on the master nodes are only being used for configuring the kubeconfig
-		if node.MasterOpts.ExposeAPI.Host == "" {
-			node.MasterOpts.ExposeAPI.Host = "0.0.0.0"
-		}
 	node.Labels["k3d.master.api.hostIP"] = node.MasterOpts.ExposeAPI.HostIP // TODO: maybe get docker machine IP here
-
 	node.Labels["k3d.master.api.host"] = node.MasterOpts.ExposeAPI.Host
+	node.Labels["k3d.master.api.port"] = node.MasterOpts.ExposeAPI.Port
 
 	node.Args = append(node.Args, "--tls-san", node.MasterOpts.ExposeAPI.Host) // add TLS SAN for non default host name
-		node.Labels["k3d.master.api.port"] = node.MasterOpts.ExposeAPI.Port
+
-		node.Ports = append(node.Ports, fmt.Sprintf("%s:%s:6443/tcp", node.MasterOpts.ExposeAPI.Host, node.MasterOpts.ExposeAPI.Port)) // TODO: get '6443' from defaultport variable
-	}
 	return nil
 }
 
@@ -203,17 +197,14 @@ func GetNode(node *k3d.Node, runtime runtimes.Runtime) (*k3d.Node, error) {
 }
 
 // WaitForNodeLogMessage follows the logs of a node container and returns if it finds a specific line in there (or timeout is reached)
-func WaitForNodeLogMessage(runtime runtimes.Runtime, node *k3d.Node, message string, timeout time.Duration) error {
+func WaitForNodeLogMessage(ctx context.Context, runtime runtimes.Runtime, node *k3d.Node, message string) error {
-	start := time.Now()
 	for {
-
+		select {
-		// return error if we've reached the timeout without having read the message
+		case <-ctx.Done():
-		if timeout != 0 && time.Now().After(start.Add(timeout)) {
+			return ctx.Err()
-			return fmt.Errorf("Timed out waiting for log message '%s' from node '%s'", message, node.Name)
+		default:
 		}
 
-		log.Debugf("Waiting for log message '%s' from node '%s'...", message, node.Name)
-
 		// read the logs
 		out, err := runtime.GetNodeLogs(node)
 		if err != nil {
@@ -234,7 +225,8 @@ func WaitForNodeLogMessage(runtime runtimes.Runtime, node *k3d.Node, message str
 		if nRead > 0 && strings.Contains(output, message) {
 			break
 		}
-		time.Sleep(1 * time.Second)
 	}
+	time.Sleep(500 * time.Millisecond) // wait for half a second to avoid overloading docker (error `socket: too many open files`)
+	log.Debugf("Finished waiting for log message '%s' from node '%s'", message, node.Name)
 	return nil
 }

pkg/runtimes/docker/container.go

@@ -30,6 +30,7 @@ import (
 	"os"
 
 	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/api/types/container"
 	"github.com/docker/docker/api/types/filters"
 	"github.com/docker/docker/client"
 	k3d "github.com/rancher/k3d/pkg/types"
@@ -50,20 +51,23 @@ func createContainer(dockerNode *NodeInDocker, name string) error {
 	}
 
 	// create container
-create: // label used to restart creation process, if we're only missing the image
+	var resp container.ContainerCreateCreatedBody
-	resp, err := docker.ContainerCreate(ctx, &dockerNode.ContainerConfig, &dockerNode.HostConfig, &dockerNode.NetworkingConfig, name)
+	for {
+		resp, err = docker.ContainerCreate(ctx, &dockerNode.ContainerConfig, &dockerNode.HostConfig, &dockerNode.NetworkingConfig, name)
 		if err != nil {
 			if client.IsErrNotFound(err) {
 				if err := pullImage(&ctx, docker, dockerNode.ContainerConfig.Image); err != nil {
 					log.Errorln("Failed to create container")
 					return err
 				}
-			goto create
+				continue
 			}
 			log.Errorln("Failed to create container")
 			return err
 		}
 		log.Debugln("Created container", resp.ID)
+		break
+	}
 
 	// start container
 	if err := docker.ContainerStart(ctx, resp.ID, types.ContainerStartOptions{}); err != nil {

pkg/runtimes/docker/network.go

@@ -23,9 +23,9 @@ package docker
 
 import (
 	"context"
-	"fmt"
 
 	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/api/types/filters"
 	"github.com/docker/docker/client"
 
 	k3d "github.com/rancher/k3d/pkg/types"
@@ -45,8 +45,7 @@ func (d Docker) CreateNetworkIfNotPresent(name string) (string, bool, error) {
 	}
 
 	// (1) configure list filters
-	args := GetDefaultObjectLabelsFilter("")
+	args := filters.NewArgs()
-	args.Del("label", fmt.Sprintf("k3d.cluster=%s", "")) // We don't filter for cluster name here
 	args.Add("name", name)
 
 	// (2) get filtered list of networks
@@ -94,3 +93,14 @@ func (d Docker) DeleteNetwork(ID string) error {
 	// (3) delete network
 	return docker.NetworkRemove(ctx, ID)
 }
+
+// GetNetwork gets information about a network by its ID
+func GetNetwork(ID string) (types.NetworkResource, error) {
+	ctx := context.Background()
+	docker, err := client.NewClientWithOpts(client.FromEnv, client.WithAPIVersionNegotiation())
+	if err != nil {
+		log.Errorln("Failed to create docker client")
+		return types.NetworkResource{}, err
+	}
+	return docker.NetworkInspect(ctx, ID, types.NetworkInspectOptions{})
+}

pkg/runtimes/docker/translate.go

@@ -86,12 +86,16 @@ func TranslateNodeToContainer(node *k3d.Node) (*NodeInDocker, error) {
 	}
 	containerConfig.ExposedPorts = exposedPorts
 	hostConfig.PortBindings = portBindings
-
 	/* Network */
 	networkingConfig.EndpointsConfig = map[string]*network.EndpointSettings{
-		node.Network: { // TODO: fill
+		node.Network: {},
-			Aliases: []string{node.Name}, // TODO: fill
+	}
-		},
+	netInfo, err := GetNetwork(node.Network)
+	if err != nil {
+		log.Warnln("Failed to get network information")
+		log.Warnln(err)
+	} else if netInfo.Driver == "host" {
+		hostConfig.NetworkMode = "host"
 	}
 
 	return &NodeInDocker{

pkg/tools/tools.go

@@ -45,10 +45,10 @@ func LoadImagesIntoCluster(runtime runtimes.Runtime, images []string, cluster *k
 		return fmt.Errorf("Failed to get network for cluster '%s'", cluster.Name)
 	}
 
-	if _, ok := cluster.Nodes[0].Labels["k3d.cluster.volumes.imagevolume"]; !ok { // TODO: add failover solution
+	if _, ok := cluster.Nodes[0].Labels["k3d.cluster.imageVolume"]; !ok { // TODO: add failover solution
 		return fmt.Errorf("Failed to find image volume for cluster '%s'", cluster.Name)
 	}
-	imageVolume := cluster.Nodes[0].Labels["k3d.cluster.volumes.imagevolume"]
+	imageVolume := cluster.Nodes[0].Labels["k3d.cluster.imageVolume"]
 
 	// create tools node to export images
 	log.Infoln("Starting k3d-tools node...")

pkg/types/types.go

@@ -23,6 +23,7 @@ package types
 
 import (
 	"fmt"
+	"time"
 )
 
 // DefaultClusterName specifies the default name used for newly created clusters
@@ -38,7 +39,7 @@ const DefaultClusterNameMaxLength = 32
 const DefaultK3sImageRepo = "docker.io/rancher/k3s"
 
 // DefaultLBImage defines the default cluster load balancer image
-const DefaultLBImage = "docker.io/library/traefik:v2.0"
+const DefaultLBImage = "docker.io/iwilltry42/k3d-proxy:v0.0.1"
 
 // DefaultObjectNamePrefix defines the name prefix for every object created by k3d
 const DefaultObjectNamePrefix = "k3d"
@@ -50,7 +51,8 @@ type Role string
 const (
 	MasterRole Role = "master"
 	WorkerRole Role = "worker"
-	NoRole     Role = "nope"
+	NoRole     Role = "noRole"
+	ProxyRole  Role = "proxy"
 )
 
 // DefaultK3dRoles defines the roles available for nodes
@@ -87,11 +89,17 @@ const DefaultConfigDirName = ".k3d" // should end up in $HOME/
 // DefaultKubeconfigPrefix defines the default prefix for kubeconfig files
 const DefaultKubeconfigPrefix = DefaultObjectNamePrefix + "-kubeconfig"
 
+// DefaultAPIPort defines the default Kubernetes API Port
+const DefaultAPIPort = "6443"
+
+// DefaultAPIHost defines the default host (IP) for the Kubernetes API
+const DefaultAPIHost = "0.0.0.0"
+
 // CreateClusterOpts describe a set of options one can set when creating a cluster
 type CreateClusterOpts struct {
 	DisableImageVolume bool
-	DisableLoadbalancer bool
+	WaitForMaster      bool
-	WaitForMaster       int
+	Timeout            time.Duration
 	K3sServerArgs      []string
 	K3sAgentArgs       []string
 }
@@ -109,9 +117,10 @@ type Cluster struct {
 	Secret            string             `yaml:"cluster_secret" json:"clusterSecret,omitempty"`
 	Nodes             []*Node            `yaml:"nodes" json:"nodes,omitempty"`
 	InitNode          *Node              // init master node
-	MasterLoadBalancer *ClusterLoadbalancer `yaml:"master_loadbalancer" json:"masterLoadBalancer,omitempty"`
 	ExternalDatastore ExternalDatastore  `yaml:"external_datastore" json:"externalDatastore,omitempty"`
 	CreateClusterOpts *CreateClusterOpts `yaml:"options" json:"options,omitempty"`
+	ExposeAPI         ExposeAPI          `yaml:"expose_api" json:"exposeAPI,omitempty"`
+	ImageVolume       string             `yaml:"image_volume" json:"imageVolume,omitempty"`
 }
 
 // Node describes a k3d node
@@ -133,8 +142,8 @@ type Node struct {
 
 // MasterOpts describes some additional master role specific opts
 type MasterOpts struct {
-	ExposeAPI ExposeAPI `yaml:"expose_api" json:"exposeAPI,omitempty"`
 	IsInit    bool      `yaml:"is_initializing_master" json:"isInitializingMaster,omitempty"`
+	ExposeAPI ExposeAPI // filled automatically
 }
 
 // ExternalDatastore describes an external datastore used for HA/multi-master clusters
@@ -160,9 +169,3 @@ type WorkerOpts struct{}
 func GetDefaultObjectName(name string) string {
 	return fmt.Sprintf("%s-%s", DefaultObjectNamePrefix, name)
 }
-
-// ClusterLoadbalancer describes a loadbalancer deployed in front of a multi-master cluster
-type ClusterLoadbalancer struct {
-	Image       string
-	ExposedPort string `yaml:"exposed_port" json:"exposedPort,omitempty"`
-}

proxy/Dockerfile

@@ -0,0 +1,13 @@
+FROM nginx:1.16.0-alpine
+
+RUN apk -U --no-cache add curl ca-certificates\
+    && mkdir -p /etc/confd \
+    && curl -sLf https://github.com/kelseyhightower/confd/releases/download/v0.16.0/confd-0.16.0-linux-amd64 > /usr/bin/confd \
+    && chmod +x /usr/bin/confd \
+    && apk del curl
+
+COPY templates /etc/confd/templates/
+COPY conf.d /etc/confd/conf.d/
+COPY nginx-proxy /usr/bin/
+
+ENTRYPOINT nginx-proxy

proxy/conf.d/nginx.toml

@@ -0,0 +1,7 @@
+[template]
+src = "nginx.tmpl"
+dest = "/etc/nginx/nginx.conf"
+keys = [
+    "SERVERS",
+    "PORT",
+]

proxy/nginx-proxy

@@ -0,0 +1,7 @@
+#!/bin/sh
+
+# Run confd
+confd -onetime -backend env
+
+# Start nginx
+nginx -g 'daemon off;'

proxy/templates/nginx.tmpl

@@ -0,0 +1,23 @@
+error_log stderr notice;
+
+worker_processes auto;
+events {
+  multi_accept on;
+  use epoll;
+  worker_connections 1024;
+}
+
+stream {
+  upstream kube_apiserver {
+    {{ $servers := split (getenv "SERVERS") "," }}{{range $servers}}
+    server {{.}}:{{getenv "PORT"}};
+    {{end}}
+  }
+
+  server {
+    listen        {{getenv "PORT"}};
+    proxy_pass    kube_apiserver;
+    proxy_timeout 30;
+    proxy_connect_timeout 2s;
+  }
+}

tests/common.sh

@@ -59,8 +59,8 @@ check_url() {
 
 check_k3d_clusters() {
   [ -n "$EXE" ] || abort "EXE is not defined"
-  for c in "c1" "c2" ; do
+  for c in "$@" ; do
-    kc=$($EXE get kubeconfig $c)
+    kc=$($EXE get kubeconfig "$c")
     [ -n "$kc" ] || abort "could not obtain a kubeconfig for $c"
     if kubectl --kubeconfig="$kc" cluster-info ; then
       passed "cluster $c is reachable (with kubeconfig=$kc)"
@@ -76,3 +76,6 @@ check_registry() {
   check_url $REGISTRY/v2/_catalog
 }
 
+check_volume_exists() {
+  docker volume inspect "$1" >/dev/null 2>&1
+}

tests/test_basic.sh

@@ -7,8 +7,8 @@ CURR_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
 source "$CURR_DIR/common.sh"
 
 info "Creating two clusters..."
-$EXE --verbose create cluster c1 --wait 60 --api-port 6443 || failed "could not create cluster c1"
+$EXE --verbose create cluster c1 --wait --timeout 60s --api-port 6443 || failed "could not create cluster c1"
-$EXE --verbose create cluster c2 --wait 60 --api-port 6444 || failed "could not create cluster c2"
+$EXE --verbose create cluster c2 --wait --timeout 60s --api-port 6444 || failed "could not create cluster c2"
 
 info "Checking we have access to both clusters..."
 check_k3d_clusters "c1" "c2" || failed "error checking cluster"

tests/test_multi_master.sh

@@ -0,0 +1,38 @@
+#!/bin/bash
+
+CURR_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+[ -d "$CURR_DIR" ] || { echo "FATAL: no current dir (maybe running in zsh?)";  exit 1; }
+
+# shellcheck source=./common.sh
+source "$CURR_DIR/common.sh"
+
+info "Creating cluster multimaster..."
+$EXE --verbose create cluster "multimaster" --masters 3 --api-port 6443 --wait --timeout 360s || failed "could not create cluster multimaster"
+
+info "Checking we have access to the cluster..."
+check_k3d_clusters "multimaster" || failed "error checking cluster"
+
+info "Checking that we have 3 servers online..."
+check_multi_master() {
+  for c in "$@" ; do
+    kc=$($EXE get kubeconfig "$c")
+    [ -n "$kc" ] || abort "could not obtain a kubeconfig for $c"
+    nodeCount=$(kubectl --kubeconfig="$kc" get nodes -o=custom-columns=NAME:.metadata.name --no-headers | wc -l)
+    if [[ $nodeCount == 3 ]]; then
+      passed "cluster $c has 3 nodes, as expected"
+    else
+      warn "cluster $c has incorrect number of nodes: $nodeCount != 3"
+      kubectl --kubeconfig="$kc" get nodes -o=custom-columns=NAME:.metadata.name --no-headers
+      return 1
+    fi
+  done
+  return 0
+}
+check_multi_master "multimaster"
+
+info "Deleting cluster multimaster..."
+$EXE delete cluster "multimaster" || failed "could not delete the cluster multimaster"
+
+exit 0
+
+

vendor/github.com/spf13/cobra/.gitignore

@@ -32,7 +32,8 @@ Session.vim
 tags
 
 *.exe
-
 cobra.test
+bin
 
-.idea/*
+.idea/
+*.iml

vendor/github.com/spf13/cobra/.travis.yml

@@ -3,29 +3,27 @@ language: go
 stages:
   - diff
   - test
+  - build
 
 go:
-  - 1.10.x
-  - 1.11.x
   - 1.12.x
+  - 1.13.x
   - tip
 
+before_install:
+  - go get -u github.com/kyoh86/richgo
+  - go get -u github.com/mitchellh/gox
+
 matrix:
   allow_failures:
     - go: tip
   include:
     - stage: diff
-      go: 1.12.x
+      go: 1.13.x
-      script: diff -u <(echo -n) <(gofmt -d -s .)
+      script: make fmt
+    - stage: build
+      go: 1.13.x
+      script: make cobra_generator
 
-before_install:
-  - mkdir -p bin
-  - curl -Lso bin/shellcheck https://github.com/caarlos0/shellcheck-docker/releases/download/v0.6.0/shellcheck
-  - chmod +x bin/shellcheck
-  - go get -u github.com/kyoh86/richgo
 script: 
-  - PATH=$PATH:$PWD/bin richgo test -v ./...
+ - make test
-  - go build
-  - if [ -z $NOVET ]; then
-      diff -u <(echo -n) <(go vet . 2>&1 | grep -vE 'ExampleCommand|bash_completions.*Fprint');
-    fi

vendor/github.com/spf13/cobra/Makefile

@@ -0,0 +1,36 @@
+BIN="./bin"
+SRC=$(shell find . -name "*.go")
+
+ifeq (, $(shell which richgo))
+$(warning "could not find richgo in $(PATH), run: go get github.com/kyoh86/richgo")
+endif
+
+.PHONY: fmt vet test cobra_generator install_deps clean
+
+default: all
+
+all: fmt vet test cobra_generator	
+
+fmt:
+	$(info ******************** checking formatting ********************)
+	@test -z $(shell gofmt -l $(SRC)) || (gofmt -d $(SRC); exit 1)
+
+test: install_deps vet
+	$(info ******************** running tests ********************)
+	richgo test -v ./...
+
+cobra_generator: install_deps
+	$(info ******************** building generator ********************)
+	mkdir -p $(BIN)
+	make -C cobra all
+
+install_deps:
+	$(info ******************** downloading dependencies ********************)
+	go get -v ./...
+
+vet:
+	$(info ******************** vetting ********************)
+	go vet ./...
+
+clean:
+	rm -rf $(BIN)

vendor/github.com/spf13/cobra/README.md

@@ -24,11 +24,13 @@ Many of the most widely used Go projects are built using Cobra, such as:
 [Prototool](https://github.com/uber/prototool),
 [mattermost-server](https://github.com/mattermost/mattermost-server),
 [Gardener](https://github.com/gardener/gardenctl),
+[Linkerd](https://linkerd.io/),
+[Github CLI](https://github.com/cli/cli)
 etc.
 
 [![Build Status](https://travis-ci.org/spf13/cobra.svg "Travis CI status")](https://travis-ci.org/spf13/cobra)
-[![CircleCI status](https://circleci.com/gh/spf13/cobra.png?circle-token=:circle-token "CircleCI status")](https://circleci.com/gh/spf13/cobra)
 [![GoDoc](https://godoc.org/github.com/spf13/cobra?status.svg)](https://godoc.org/github.com/spf13/cobra)
+[![Go Report Card](https://goreportcard.com/badge/github.com/spf13/cobra)](https://goreportcard.com/report/github.com/spf13/cobra)
 
 # Table of Contents
 
@@ -208,6 +210,8 @@ You will additionally define flags and handle configuration in your init() funct
 For example cmd/root.go:
 
 ```go
+package cmd
+
 import (
 	"fmt"
 	"os"
@@ -217,22 +221,47 @@ import (
 	"github.com/spf13/viper"
 )
 
+var (
+	// Used for flags.
+	cfgFile     string
+	userLicense string
+
+	rootCmd = &cobra.Command{
+		Use:   "cobra",
+		Short: "A generator for Cobra based Applications",
+		Long: `Cobra is a CLI library for Go that empowers applications.
+This application is a tool to generate the needed files
+to quickly create a Cobra application.`,
+	}
+)
+
+// Execute executes the root command.
+func Execute() error {
+	return rootCmd.Execute()
+}
+
 func init() {
 	cobra.OnInitialize(initConfig)
+
 	rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.cobra.yaml)")
-  rootCmd.PersistentFlags().StringVarP(&projectBase, "projectbase", "b", "", "base project directory eg. github.com/spf13/")
+	rootCmd.PersistentFlags().StringP("author", "a", "YOUR NAME", "author name for copyright attribution")
-  rootCmd.PersistentFlags().StringP("author", "a", "YOUR NAME", "Author name for copyright attribution")
+	rootCmd.PersistentFlags().StringVarP(&userLicense, "license", "l", "", "name of license for the project")
-  rootCmd.PersistentFlags().StringVarP(&userLicense, "license", "l", "", "Name of license for the project (can provide `licensetext` in config)")
+	rootCmd.PersistentFlags().Bool("viper", true, "use Viper for configuration")
-  rootCmd.PersistentFlags().Bool("viper", true, "Use Viper for configuration")
 	viper.BindPFlag("author", rootCmd.PersistentFlags().Lookup("author"))
-  viper.BindPFlag("projectbase", rootCmd.PersistentFlags().Lookup("projectbase"))
 	viper.BindPFlag("useViper", rootCmd.PersistentFlags().Lookup("viper"))
 	viper.SetDefault("author", "NAME HERE <EMAIL ADDRESS>")
 	viper.SetDefault("license", "apache")
+
+	rootCmd.AddCommand(addCmd)
+	rootCmd.AddCommand(initCmd)
+}
+
+func er(msg interface{}) {
+	fmt.Println("Error:", msg)
+	os.Exit(1)
 }
 
 func initConfig() {
-  // Don't forget to read config either from cfgFile or from home directory!
 	if cfgFile != "" {
 		// Use config file from the flag.
 		viper.SetConfigFile(cfgFile)
@@ -240,8 +269,7 @@ func initConfig() {
 		// Find home directory.
 		home, err := homedir.Dir()
 		if err != nil {
-      fmt.Println(err)
+			er(err)
-      os.Exit(1)
 		}
 
 		// Search config in home directory with name ".cobra" (without extension).
@@ -249,9 +277,10 @@ func initConfig() {
 		viper.SetConfigName(".cobra")
 	}
 
-  if err := viper.ReadInConfig(); err != nil {
+	viper.AutomaticEnv()
-    fmt.Println("Can't read config:", err)
+
-    os.Exit(1)
+	if err := viper.ReadInConfig(); err == nil {
+		fmt.Println("Using config file:", viper.ConfigFileUsed())
 	}
 }
 ```
@@ -459,7 +488,7 @@ For many years people have printed back to the screen.`,
 Echo works a lot like print, except it has a child command.`,
     Args: cobra.MinimumNArgs(1),
     Run: func(cmd *cobra.Command, args []string) {
-      fmt.Println("Print: " + strings.Join(args, " "))
+      fmt.Println("Echo: " + strings.Join(args, " "))
     },
   }
 

vendor/github.com/spf13/cobra/args.go

@@ -2,6 +2,7 @@ package cobra
 
 import (
 	"fmt"
+	"strings"
 )
 
 type PositionalArgs func(cmd *Command, args []string) error
@@ -34,8 +35,15 @@ func NoArgs(cmd *Command, args []string) error {
 // OnlyValidArgs returns an error if any args are not in the list of ValidArgs.
 func OnlyValidArgs(cmd *Command, args []string) error {
 	if len(cmd.ValidArgs) > 0 {
+		// Remove any description that may be included in ValidArgs.
+		// A description is following a tab character.
+		var validArgs []string
+		for _, v := range cmd.ValidArgs {
+			validArgs = append(validArgs, strings.Split(v, "\t")[0])
+		}
+
 		for _, v := range args {
-			if !stringInSlice(v, cmd.ValidArgs) {
+			if !stringInSlice(v, validArgs) {
 				return fmt.Errorf("invalid argument %q for %q%s", v, cmd.CommandPath(), cmd.findSuggestions(args[0]))
 			}
 		}

vendor/github.com/spf13/cobra/bash_completions.go

@@ -58,9 +58,71 @@ __%[1]s_contains_word()
     return 1
 }
 
+__%[1]s_handle_go_custom_completion()
+{
+    __%[1]s_debug "${FUNCNAME[0]}: cur is ${cur}, words[*] is ${words[*]}, #words[@] is ${#words[@]}"
+
+    local out requestComp lastParam lastChar comp directive args
+
+    # Prepare the command to request completions for the program.
+    # Calling ${words[0]} instead of directly %[1]s allows to handle aliases
+    args=("${words[@]:1}")
+    requestComp="${words[0]} %[2]s ${args[*]}"
+
+    lastParam=${words[$((${#words[@]}-1))]}
+    lastChar=${lastParam:$((${#lastParam}-1)):1}
+    __%[1]s_debug "${FUNCNAME[0]}: lastParam ${lastParam}, lastChar ${lastChar}"
+
+    if [ -z "${cur}" ] && [ "${lastChar}" != "=" ]; then
+        # If the last parameter is complete (there is a space following it)
+        # We add an extra empty parameter so we can indicate this to the go method.
+        __%[1]s_debug "${FUNCNAME[0]}: Adding extra empty parameter"
+        requestComp="${requestComp} \"\""
+    fi
+
+    __%[1]s_debug "${FUNCNAME[0]}: calling ${requestComp}"
+    # Use eval to handle any environment variables and such
+    out=$(eval "${requestComp}" 2>/dev/null)
+
+    # Extract the directive integer at the very end of the output following a colon (:)
+    directive=${out##*:}
+    # Remove the directive
+    out=${out%%:*}
+    if [ "${directive}" = "${out}" ]; then
+        # There is not directive specified
+        directive=0
+    fi
+    __%[1]s_debug "${FUNCNAME[0]}: the completion directive is: ${directive}"
+    __%[1]s_debug "${FUNCNAME[0]}: the completions are: ${out[*]}"
+
+    if [ $((directive & %[3]d)) -ne 0 ]; then
+        # Error code.  No completion.
+        __%[1]s_debug "${FUNCNAME[0]}: received error from custom completion go code"
+        return
+    else
+        if [ $((directive & %[4]d)) -ne 0 ]; then
+            if [[ $(type -t compopt) = "builtin" ]]; then
+                __%[1]s_debug "${FUNCNAME[0]}: activating no space"
+                compopt -o nospace
+            fi
+        fi
+        if [ $((directive & %[5]d)) -ne 0 ]; then
+            if [[ $(type -t compopt) = "builtin" ]]; then
+                __%[1]s_debug "${FUNCNAME[0]}: activating no file completion"
+                compopt +o default
+            fi
+        fi
+
+        while IFS='' read -r comp; do
+            COMPREPLY+=("$comp")
+        done < <(compgen -W "${out[*]}" -- "$cur")
+    fi
+}
+
 __%[1]s_handle_reply()
 {
     __%[1]s_debug "${FUNCNAME[0]}"
+    local comp
     case $cur in
         -*)
             if [[ $(type -t compopt) = "builtin" ]]; then
@@ -72,7 +134,9 @@ __%[1]s_handle_reply()
             else
                 allflags=("${flags[*]} ${two_word_flags[*]}")
             fi
-            COMPREPLY=( $(compgen -W "${allflags[*]}" -- "$cur") )
+            while IFS='' read -r comp; do
+                COMPREPLY+=("$comp")
+            done < <(compgen -W "${allflags[*]}" -- "$cur")
             if [[ $(type -t compopt) = "builtin" ]]; then
                 [[ "${COMPREPLY[0]}" == *= ]] || compopt +o nospace
             fi
@@ -118,14 +182,22 @@ __%[1]s_handle_reply()
     completions=("${commands[@]}")
     if [[ ${#must_have_one_noun[@]} -ne 0 ]]; then
         completions=("${must_have_one_noun[@]}")
+    elif [[ -n "${has_completion_function}" ]]; then
+        # if a go completion function is provided, defer to that function
+        completions=()
+        __%[1]s_handle_go_custom_completion
     fi
     if [[ ${#must_have_one_flag[@]} -ne 0 ]]; then
         completions+=("${must_have_one_flag[@]}")
     fi
-    COMPREPLY=( $(compgen -W "${completions[*]}" -- "$cur") )
+    while IFS='' read -r comp; do
+        COMPREPLY+=("$comp")
+    done < <(compgen -W "${completions[*]}" -- "$cur")
 
     if [[ ${#COMPREPLY[@]} -eq 0 && ${#noun_aliases[@]} -gt 0 && ${#must_have_one_noun[@]} -ne 0 ]]; then
-        COMPREPLY=( $(compgen -W "${noun_aliases[*]}" -- "$cur") )
+        while IFS='' read -r comp; do
+            COMPREPLY+=("$comp")
+        done < <(compgen -W "${noun_aliases[*]}" -- "$cur")
     fi
 
     if [[ ${#COMPREPLY[@]} -eq 0 ]]; then
@@ -160,7 +232,7 @@ __%[1]s_handle_filename_extension_flag()
 __%[1]s_handle_subdirs_in_dir_flag()
 {
     local dir="$1"
-    pushd "${dir}" >/dev/null 2>&1 && _filedir -d && popd >/dev/null 2>&1
+    pushd "${dir}" >/dev/null 2>&1 && _filedir -d && popd >/dev/null 2>&1 || return
 }
 
 __%[1]s_handle_flag()
@@ -272,7 +344,7 @@ __%[1]s_handle_word()
     __%[1]s_handle_word
 }
 
-`, name))
+`, name, ShellCompNoDescRequestCmd, ShellCompDirectiveError, ShellCompDirectiveNoSpace, ShellCompDirectiveNoFileComp))
 }
 
 func writePostscript(buf *bytes.Buffer, name string) {
@@ -297,6 +369,7 @@ func writePostscript(buf *bytes.Buffer, name string) {
     local commands=("%[1]s")
     local must_have_one_flag=()
     local must_have_one_noun=()
+    local has_completion_function
     local last_command
     local nouns=()
 
@@ -397,7 +470,22 @@ func writeLocalNonPersistentFlag(buf *bytes.Buffer, flag *pflag.Flag) {
 	buf.WriteString(fmt.Sprintf(format, name))
 }
 
+// Setup annotations for go completions for registered flags
+func prepareCustomAnnotationsForFlags(cmd *Command) {
+	for flag := range flagCompletionFunctions {
+		// Make sure the completion script calls the __*_go_custom_completion function for
+		// every registered flag.  We need to do this here (and not when the flag was registered
+		// for completion) so that we can know the root command name for the prefix
+		// of __<prefix>_go_custom_completion
+		if flag.Annotations == nil {
+			flag.Annotations = map[string][]string{}
+		}
+		flag.Annotations[BashCompCustom] = []string{fmt.Sprintf("__%[1]s_handle_go_custom_completion", cmd.Root().Name())}
+	}
+}
+
 func writeFlags(buf *bytes.Buffer, cmd *Command) {
+	prepareCustomAnnotationsForFlags(cmd)
 	buf.WriteString(`    flags=()
     two_word_flags=()
     local_nonpersistent_flags=()
@@ -460,8 +548,14 @@ func writeRequiredNouns(buf *bytes.Buffer, cmd *Command) {
 	buf.WriteString("    must_have_one_noun=()\n")
 	sort.Sort(sort.StringSlice(cmd.ValidArgs))
 	for _, value := range cmd.ValidArgs {
+		// Remove any description that may be included following a tab character.
+		// Descriptions are not supported by bash completion.
+		value = strings.Split(value, "\t")[0]
 		buf.WriteString(fmt.Sprintf("    must_have_one_noun+=(%q)\n", value))
 	}
+	if cmd.ValidArgsFunction != nil {
+		buf.WriteString("    has_completion_function=1\n")
+	}
 }
 
 func writeCmdAliases(buf *bytes.Buffer, cmd *Command) {

vendor/github.com/spf13/cobra/bash_completions.md

@@ -56,7 +56,149 @@ func main() {
 
 `out.sh` will get you completions of subcommands and flags. Copy it to `/etc/bash_completion.d/` as described [here](https://debian-administration.org/article/316/An_introduction_to_bash_completion_part_1) and reset your terminal to use autocompletion. If you make additional annotations to your code, you can get even more intelligent and flexible behavior.
 
-## Creating your own custom functions
+## Have the completions code complete your 'nouns'
+
+### Static completion of nouns
+
+This method allows you to provide a pre-defined list of completion choices for your nouns using the `validArgs` field.
+For example, if you want `kubectl get [tab][tab]` to show a list of valid "nouns" you have to set them. Simplified code from `kubectl get` looks like:
+
+```go
+validArgs []string = { "pod", "node", "service", "replicationcontroller" }
+
+cmd := &cobra.Command{
+	Use:     "get [(-o|--output=)json|yaml|template|...] (RESOURCE [NAME] | RESOURCE/NAME ...)",
+	Short:   "Display one or many resources",
+	Long:    get_long,
+	Example: get_example,
+	Run: func(cmd *cobra.Command, args []string) {
+		err := RunGet(f, out, cmd, args)
+		util.CheckErr(err)
+	},
+	ValidArgs: validArgs,
+}
+```
+
+Notice we put the "ValidArgs" on the "get" subcommand. Doing so will give results like
+
+```bash
+# kubectl get [tab][tab]
+node                 pod                    replicationcontroller  service
+```
+
+### Plural form and shortcuts for nouns
+
+If your nouns have a number of aliases, you can define them alongside `ValidArgs` using `ArgAliases`:
+
+```go
+argAliases []string = { "pods", "nodes", "services", "svc", "replicationcontrollers", "rc" }
+
+cmd := &cobra.Command{
+    ...
+	ValidArgs:  validArgs,
+	ArgAliases: argAliases
+}
+```
+
+The aliases are not shown to the user on tab completion, but they are accepted as valid nouns by
+the completion algorithm if entered manually, e.g. in:
+
+```bash
+# kubectl get rc [tab][tab]
+backend        frontend       database 
+```
+
+Note that without declaring `rc` as an alias, the completion algorithm would show the list of nouns
+in this example again instead of the replication controllers.
+
+### Dynamic completion of nouns
+
+In some cases it is not possible to provide a list of possible completions in advance.  Instead, the list of completions must be determined at execution-time.  Cobra provides two ways of defining such dynamic completion of nouns. Note that both these methods can be used along-side each other as long as they are not both used for the same command.
+
+**Note**: *Custom Completions written in Go* will automatically work for other shell-completion scripts (e.g., Fish shell), while *Custom Completions written in Bash* will only work for Bash shell-completion.  It is therefore recommended to use *Custom Completions written in Go*.
+
+#### 1. Custom completions of nouns written in Go
+
+In a similar fashion as for static completions, you can use the `ValidArgsFunction` field to provide a Go function that Cobra will execute when it needs the list of completion choices for the nouns of a command.  Note that either `ValidArgs` or `ValidArgsFunction` can be used for a single cobra command, but not both.
+Simplified code from `helm status` looks like:
+
+```go
+cmd := &cobra.Command{
+	Use:   "status RELEASE_NAME",
+	Short: "Display the status of the named release",
+	Long:  status_long,
+	RunE: func(cmd *cobra.Command, args []string) {
+		RunGet(args[0])
+	},
+	ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+		if len(args) != 0 {
+			return nil, cobra.ShellCompDirectiveNoFileComp
+		}
+		return getReleasesFromCluster(toComplete), cobra.ShellCompDirectiveNoFileComp
+	},
+}
+```
+Where `getReleasesFromCluster()` is a Go function that obtains the list of current Helm releases running on the Kubernetes cluster.
+Notice we put the `ValidArgsFunction` on the `status` subcommand. Let's assume the Helm releases on the cluster are: `harbor`, `notary`, `rook` and `thanos` then this dynamic completion will give results like
+
+```bash
+# helm status [tab][tab]
+harbor notary rook thanos
+```
+You may have noticed the use of `cobra.ShellCompDirective`.  These directives are bit fields allowing to control some shell completion behaviors for your particular completion.  You can combine them with the bit-or operator such as `cobra.ShellCompDirectiveNoSpace | cobra.ShellCompDirectiveNoFileComp`
+```go
+// Indicates an error occurred and completions should be ignored.
+ShellCompDirectiveError
+// Indicates that the shell should not add a space after the completion,
+// even if there is a single completion provided.
+ShellCompDirectiveNoSpace
+// Indicates that the shell should not provide file completion even when
+// no completion is provided.
+// This currently does not work for zsh or bash < 4
+ShellCompDirectiveNoFileComp
+// Indicates that the shell will perform its default behavior after completions
+// have been provided (this implies !ShellCompDirectiveNoSpace && !ShellCompDirectiveNoFileComp).
+ShellCompDirectiveDefault
+```
+
+When using the `ValidArgsFunction`, Cobra will call your registered function after having parsed all flags and arguments provided in the command-line.  You therefore don't need to do this parsing yourself.  For example, when a user calls `helm status --namespace my-rook-ns [tab][tab]`, Cobra will call your registered `ValidArgsFunction` after having parsed the `--namespace` flag, as it would have done when calling the `RunE` function.
+
+##### Debugging
+
+Cobra achieves dynamic completions written in Go through the use of a hidden command called by the completion script.  To debug your Go completion code, you can call this hidden command directly:
+```bash
+# helm __complete status har<ENTER>
+harbor
+:4
+Completion ended with directive: ShellCompDirectiveNoFileComp # This is on stderr
+```
+***Important:*** If the noun to complete is empty, you must pass an empty parameter to the `__complete` command:
+```bash
+# helm __complete status ""<ENTER>
+harbor
+notary
+rook
+thanos
+:4
+Completion ended with directive: ShellCompDirectiveNoFileComp # This is on stderr
+```
+Calling the `__complete` command directly allows you to run the Go debugger to troubleshoot your code.  You can also add printouts to your code; Cobra provides the following functions to use for printouts in Go completion code:
+```go
+// Prints to the completion script debug file (if BASH_COMP_DEBUG_FILE
+// is set to a file path) and optionally prints to stderr.
+cobra.CompDebug(msg string, printToStdErr bool) {
+cobra.CompDebugln(msg string, printToStdErr bool)
+
+// Prints to the completion script debug file (if BASH_COMP_DEBUG_FILE
+// is set to a file path) and to stderr.
+cobra.CompError(msg string)
+cobra.CompErrorln(msg string)
+```
+***Important:*** You should **not** leave traces that print to stdout in your completion code as they will be interpreted as completion choices by the completion script.  Instead, use the cobra-provided debugging traces functions mentioned above.
+
+#### 2. Custom completions of nouns written in Bash
+
+This method allows you to inject bash functions into the completion script.  Those bash functions are responsible for providing the completion choices for your own completions.
 
 Some more actual code that works in kubernetes:
 
@@ -111,58 +253,6 @@ Find more information at https://github.com/GoogleCloudPlatform/kubernetes.`,
 
 The `BashCompletionFunction` option is really only valid/useful on the root command. Doing the above will cause `__kubectl_custom_func()` (`__<command-use>_custom_func()`) to be called when the built in processor was unable to find a solution. In the case of kubernetes a valid command might look something like `kubectl get pod [mypod]`. If you type `kubectl get pod [tab][tab]` the `__kubectl_customc_func()` will run because the cobra.Command only understood "kubectl" and "get." `__kubectl_custom_func()` will see that the cobra.Command is "kubectl_get" and will thus call another helper `__kubectl_get_resource()`.  `__kubectl_get_resource` will look at the 'nouns' collected. In our example the only noun will be `pod`.  So it will call `__kubectl_parse_get pod`.  `__kubectl_parse_get` will actually call out to kubernetes and get any pods.  It will then set `COMPREPLY` to valid pods!
 
-## Have the completions code complete your 'nouns'
-
-In the above example "pod" was assumed to already be typed. But if you want `kubectl get [tab][tab]` to show a list of valid "nouns" you have to set them. Simplified code from `kubectl get` looks like:
-
-```go
-validArgs []string = { "pod", "node", "service", "replicationcontroller" }
-
-cmd := &cobra.Command{
-	Use:     "get [(-o|--output=)json|yaml|template|...] (RESOURCE [NAME] | RESOURCE/NAME ...)",
-	Short:   "Display one or many resources",
-	Long:    get_long,
-	Example: get_example,
-	Run: func(cmd *cobra.Command, args []string) {
-		err := RunGet(f, out, cmd, args)
-		util.CheckErr(err)
-	},
-	ValidArgs: validArgs,
-}
-```
-
-Notice we put the "ValidArgs" on the "get" subcommand. Doing so will give results like
-
-```bash
-# kubectl get [tab][tab]
-node                 pod                    replicationcontroller  service
-```
-
-## Plural form and shortcuts for nouns
-
-If your nouns have a number of aliases, you can define them alongside `ValidArgs` using `ArgAliases`:
-
-```go
-argAliases []string = { "pods", "nodes", "services", "svc", "replicationcontrollers", "rc" }
-
-cmd := &cobra.Command{
-    ...
-	ValidArgs:  validArgs,
-	ArgAliases: argAliases
-}
-```
-
-The aliases are not shown to the user on tab completion, but they are accepted as valid nouns by
-the completion algorithm if entered manually, e.g. in:
-
-```bash
-# kubectl get rc [tab][tab]
-backend        frontend       database 
-```
-
-Note that without declaring `rc` as an alias, the completion algorithm would show the list of nouns
-in this example again instead of the replication controllers.
-
 ## Mark flags as required
 
 Most of the time completions will only show subcommands. But if a flag is required to make a subcommand work, you probably want it to show up when the user types [tab][tab].  Marking a flag as 'Required' is incredibly easy.
@@ -211,8 +301,45 @@ So while there are many other files in the CWD it only shows me subdirs and thos
 
 # Specify custom flag completion
 
-Similar to the filename completion and filtering using cobra.BashCompFilenameExt, you can specify
+As for nouns, Cobra provides two ways of defining dynamic completion of flags.  Note that both these methods can be used along-side each other as long as they are not both used for the same flag.
-a custom flag completion function with cobra.BashCompCustom:
+
+**Note**: *Custom Completions written in Go* will automatically work for other shell-completion scripts (e.g., Fish shell), while *Custom Completions written in Bash* will only work for Bash shell-completion.  It is therefore recommended to use *Custom Completions written in Go*.
+
+## 1. Custom completions of flags written in Go
+
+To provide a Go function that Cobra will execute when it needs the list of completion choices for a flag, you must register the function in the following manner:
+
+```go
+flagName := "output"
+cmd.RegisterFlagCompletionFunc(flagName, func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+	return []string{"json", "table", "yaml"}, cobra.ShellCompDirectiveDefault
+})
+```
+Notice that calling `RegisterFlagCompletionFunc()` is done through the `command` with which the flag is associated.  In our example this dynamic completion will give results like so:
+
+```bash
+# helm status --output [tab][tab]
+json table yaml
+```
+
+### Debugging
+
+You can also easily debug your Go completion code for flags:
+```bash
+# helm __complete status --output ""
+json
+table
+yaml
+:4
+Completion ended with directive: ShellCompDirectiveNoFileComp # This is on stderr
+```
+***Important:*** You should **not** leave traces that print to stdout in your completion code as they will be interpreted as completion choices by the completion script.  Instead, use the cobra-provided debugging traces functions mentioned in the above section.
+
+## 2. Custom completions of flags written in Bash
+
+Alternatively, you can use bash code for flag custom completion. Similar to the filename
+completion and filtering using `cobra.BashCompFilenameExt`, you can specify
+a custom flag completion bash function with `cobra.BashCompCustom`:
 
 ```go
 	annotation := make(map[string][]string)
@@ -226,7 +353,7 @@ a custom flag completion function with cobra.BashCompCustom:
 	cmd.Flags().AddFlag(flag)
 ```
 
-In addition add the `__handle_namespace_flag` implementation in the `BashCompletionFunction`
+In addition add the `__kubectl_get_namespaces` implementation in the `BashCompletionFunction`
 value, e.g.:
 
 ```bash

vendor/github.com/spf13/cobra/cobra.go

@@ -52,7 +52,7 @@ var EnableCommandSorting = true
 // if the CLI is started from explorer.exe.
 // To disable the mousetrap, just set this variable to blank string ("").
 // Works only on Microsoft Windows.
-var MousetrapHelpText string = `This is a command line tool.
+var MousetrapHelpText = `This is a command line tool.
 
 You need to open cmd.exe and run it from there.
 `
@@ -61,7 +61,7 @@ You need to open cmd.exe and run it from there.
 // if the CLI is started from explorer.exe. Set to 0 to wait for the return key to be pressed.
 // To disable the mousetrap, just set MousetrapHelpText to blank string ("").
 // Works only on Microsoft Windows.
-var MousetrapDisplayDuration time.Duration = 5 * time.Second
+var MousetrapDisplayDuration = 5 * time.Second
 
 // AddTemplateFunc adds a template function that's available to Usage and Help
 // template generation.

vendor/github.com/spf13/cobra/command.go

@@ -17,6 +17,7 @@ package cobra
 
 import (
 	"bytes"
+	"context"
 	"fmt"
 	"io"
 	"os"
@@ -56,6 +57,10 @@ type Command struct {
 
 	// ValidArgs is list of all valid non-flag arguments that are accepted in bash completions
 	ValidArgs []string
+	// ValidArgsFunction is an optional function that provides valid non-flag arguments for bash completion.
+	// It is a dynamic version of using ValidArgs.
+	// Only one of ValidArgs and ValidArgsFunction can be used for a command.
+	ValidArgsFunction func(cmd *Command, args []string, toComplete string) ([]string, ShellCompDirective)
 
 	// Expected arguments
 	Args PositionalArgs
@@ -80,7 +85,8 @@ type Command struct {
 
 	// Version defines the version for this command. If this value is non-empty and the command does not
 	// define a "version" flag, a "version" boolean flag will be added to the command and, if specified,
-	// will print content of the "Version" variable.
+	// will print content of the "Version" variable. A shorthand "v" flag will also be added if the
+	// command does not define one.
 	Version string
 
 	// The *Run functions are executed in the following order:
@@ -140,9 +146,11 @@ type Command struct {
 	// TraverseChildren parses flags on all parents before executing child command.
 	TraverseChildren bool
 
-	//FParseErrWhitelist flag parse errors to be ignored
+	// FParseErrWhitelist flag parse errors to be ignored
 	FParseErrWhitelist FParseErrWhitelist
 
+	ctx context.Context
+
 	// commands is the list of commands supported by this program.
 	commands []*Command
 	// parent is a parent command for this command.
@@ -202,6 +210,12 @@ type Command struct {
 	errWriter io.Writer
 }
 
+// Context returns underlying command context. If command wasn't
+// executed with ExecuteContext Context returns Background context.
+func (c *Command) Context() context.Context {
+	return c.ctx
+}
+
 // SetArgs sets arguments for the command. It is set to os.Args[1:] by default, if desired, can be overridden
 // particularly useful when testing.
 func (c *Command) SetArgs(a []string) {
@@ -228,7 +242,7 @@ func (c *Command) SetErr(newErr io.Writer) {
 	c.errWriter = newErr
 }
 
-// SetOut sets the source for input data
+// SetIn sets the source for input data
 // If newIn is nil, os.Stdin is used.
 func (c *Command) SetIn(newIn io.Reader) {
 	c.inReader = newIn
@@ -297,7 +311,7 @@ func (c *Command) ErrOrStderr() io.Writer {
 	return c.getErr(os.Stderr)
 }
 
-// ErrOrStderr returns output to stderr
+// InOrStdin returns input to stdin
 func (c *Command) InOrStdin() io.Reader {
 	return c.getIn(os.Stdin)
 }
@@ -369,6 +383,8 @@ func (c *Command) HelpFunc() func(*Command, []string) {
 	}
 	return func(c *Command, a []string) {
 		c.mergePersistentFlags()
+		// The help should be sent to stdout
+		// See https://github.com/spf13/cobra/issues/1002
 		err := tmpl(c.OutOrStdout(), c.HelpTemplate(), c)
 		if err != nil {
 			c.Println(err)
@@ -857,6 +873,13 @@ func (c *Command) preRun() {
 	}
 }
 
+// ExecuteContext is the same as Execute(), but sets the ctx on the command.
+// Retrieve ctx by calling cmd.Context() inside your *Run lifecycle functions.
+func (c *Command) ExecuteContext(ctx context.Context) error {
+	c.ctx = ctx
+	return c.Execute()
+}
+
 // Execute uses the args (os.Args[1:] by default)
 // and run through the command tree finding appropriate matches
 // for commands and then corresponding flags.
@@ -867,6 +890,10 @@ func (c *Command) Execute() error {
 
 // ExecuteC executes the command.
 func (c *Command) ExecuteC() (cmd *Command, err error) {
+	if c.ctx == nil {
+		c.ctx = context.Background()
+	}
+
 	// Regardless of what command execute is called on, run on Root only
 	if c.HasParent() {
 		return c.Root().ExecuteC()
@@ -888,6 +915,9 @@ func (c *Command) ExecuteC() (cmd *Command, err error) {
 		args = os.Args[1:]
 	}
 
+	// initialize the hidden command to be used for bash completion
+	c.initCompleteCmd(args)
+
 	var flags []string
 	if c.TraverseChildren {
 		cmd, flags, err = c.Traverse(args)
@@ -911,6 +941,12 @@ func (c *Command) ExecuteC() (cmd *Command, err error) {
 		cmd.commandCalledAs.name = cmd.Name()
 	}
 
+	// We have to pass global context to children command
+	// if context is present on the parent command.
+	if cmd.ctx == nil {
+		cmd.ctx = c.ctx
+	}
+
 	err = cmd.execute(flags)
 	if err != nil {
 		// Always show help if requested, even if SilenceErrors is in
@@ -994,8 +1030,12 @@ func (c *Command) InitDefaultVersionFlag() {
 		} else {
 			usage += c.Name()
 		}
+		if c.Flags().ShorthandLookup("v") == nil {
+			c.Flags().BoolP("version", "v", false, usage)
+		} else {
 			c.Flags().Bool("version", false, usage)
 		}
+	}
 }
 
 // InitDefaultHelpCmd adds default help command to c.
@@ -1547,7 +1587,7 @@ func (c *Command) ParseFlags(args []string) error {
 	beforeErrorBufLen := c.flagErrorBuf.Len()
 	c.mergePersistentFlags()
 
-	//do it here after merging all flags and just before parse
+	// do it here after merging all flags and just before parse
 	c.Flags().ParseErrorsWhitelist = flag.ParseErrorsWhitelist(c.FParseErrWhitelist)
 
 	err := c.Flags().Parse(args)

vendor/github.com/spf13/cobra/custom_completions.go

@@ -0,0 +1,384 @@
+package cobra
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/spf13/pflag"
+)
+
+const (
+	// ShellCompRequestCmd is the name of the hidden command that is used to request
+	// completion results from the program.  It is used by the shell completion scripts.
+	ShellCompRequestCmd = "__complete"
+	// ShellCompNoDescRequestCmd is the name of the hidden command that is used to request
+	// completion results without their description.  It is used by the shell completion scripts.
+	ShellCompNoDescRequestCmd = "__completeNoDesc"
+)
+
+// Global map of flag completion functions.
+var flagCompletionFunctions = map[*pflag.Flag]func(cmd *Command, args []string, toComplete string) ([]string, ShellCompDirective){}
+
+// ShellCompDirective is a bit map representing the different behaviors the shell
+// can be instructed to have once completions have been provided.
+type ShellCompDirective int
+
+const (
+	// ShellCompDirectiveError indicates an error occurred and completions should be ignored.
+	ShellCompDirectiveError ShellCompDirective = 1 << iota
+
+	// ShellCompDirectiveNoSpace indicates that the shell should not add a space
+	// after the completion even if there is a single completion provided.
+	ShellCompDirectiveNoSpace
+
+	// ShellCompDirectiveNoFileComp indicates that the shell should not provide
+	// file completion even when no completion is provided.
+	// This currently does not work for zsh or bash < 4
+	ShellCompDirectiveNoFileComp
+
+	// ShellCompDirectiveDefault indicates to let the shell perform its default
+	// behavior after completions have been provided.
+	ShellCompDirectiveDefault ShellCompDirective = 0
+)
+
+// RegisterFlagCompletionFunc should be called to register a function to provide completion for a flag.
+func (c *Command) RegisterFlagCompletionFunc(flagName string, f func(cmd *Command, args []string, toComplete string) ([]string, ShellCompDirective)) error {
+	flag := c.Flag(flagName)
+	if flag == nil {
+		return fmt.Errorf("RegisterFlagCompletionFunc: flag '%s' does not exist", flagName)
+	}
+	if _, exists := flagCompletionFunctions[flag]; exists {
+		return fmt.Errorf("RegisterFlagCompletionFunc: flag '%s' already registered", flagName)
+	}
+	flagCompletionFunctions[flag] = f
+	return nil
+}
+
+// Returns a string listing the different directive enabled in the specified parameter
+func (d ShellCompDirective) string() string {
+	var directives []string
+	if d&ShellCompDirectiveError != 0 {
+		directives = append(directives, "ShellCompDirectiveError")
+	}
+	if d&ShellCompDirectiveNoSpace != 0 {
+		directives = append(directives, "ShellCompDirectiveNoSpace")
+	}
+	if d&ShellCompDirectiveNoFileComp != 0 {
+		directives = append(directives, "ShellCompDirectiveNoFileComp")
+	}
+	if len(directives) == 0 {
+		directives = append(directives, "ShellCompDirectiveDefault")
+	}
+
+	if d > ShellCompDirectiveError+ShellCompDirectiveNoSpace+ShellCompDirectiveNoFileComp {
+		return fmt.Sprintf("ERROR: unexpected ShellCompDirective value: %d", d)
+	}
+	return strings.Join(directives, ", ")
+}
+
+// Adds a special hidden command that can be used to request custom completions.
+func (c *Command) initCompleteCmd(args []string) {
+	completeCmd := &Command{
+		Use:                   fmt.Sprintf("%s [command-line]", ShellCompRequestCmd),
+		Aliases:               []string{ShellCompNoDescRequestCmd},
+		DisableFlagsInUseLine: true,
+		Hidden:                true,
+		DisableFlagParsing:    true,
+		Args:                  MinimumNArgs(1),
+		Short:                 "Request shell completion choices for the specified command-line",
+		Long: fmt.Sprintf("%[2]s is a special command that is used by the shell completion logic\n%[1]s",
+			"to request completion choices for the specified command-line.", ShellCompRequestCmd),
+		Run: func(cmd *Command, args []string) {
+			finalCmd, completions, directive, err := cmd.getCompletions(args)
+			if err != nil {
+				CompErrorln(err.Error())
+				// Keep going for multiple reasons:
+				// 1- There could be some valid completions even though there was an error
+				// 2- Even without completions, we need to print the directive
+			}
+
+			noDescriptions := (cmd.CalledAs() == ShellCompNoDescRequestCmd)
+			for _, comp := range completions {
+				if noDescriptions {
+					// Remove any description that may be included following a tab character.
+					comp = strings.Split(comp, "\t")[0]
+				}
+				// Print each possible completion to stdout for the completion script to consume.
+				fmt.Fprintln(finalCmd.OutOrStdout(), comp)
+			}
+
+			if directive > ShellCompDirectiveError+ShellCompDirectiveNoSpace+ShellCompDirectiveNoFileComp {
+				directive = ShellCompDirectiveDefault
+			}
+
+			// As the last printout, print the completion directive for the completion script to parse.
+			// The directive integer must be that last character following a single colon (:).
+			// The completion script expects :<directive>
+			fmt.Fprintf(finalCmd.OutOrStdout(), ":%d\n", directive)
+
+			// Print some helpful info to stderr for the user to understand.
+			// Output from stderr must be ignored by the completion script.
+			fmt.Fprintf(finalCmd.ErrOrStderr(), "Completion ended with directive: %s\n", directive.string())
+		},
+	}
+	c.AddCommand(completeCmd)
+	subCmd, _, err := c.Find(args)
+	if err != nil || subCmd.Name() != ShellCompRequestCmd {
+		// Only create this special command if it is actually being called.
+		// This reduces possible side-effects of creating such a command;
+		// for example, having this command would cause problems to a
+		// cobra program that only consists of the root command, since this
+		// command would cause the root command to suddenly have a subcommand.
+		c.RemoveCommand(completeCmd)
+	}
+}
+
+func (c *Command) getCompletions(args []string) (*Command, []string, ShellCompDirective, error) {
+	var completions []string
+
+	// The last argument, which is not completely typed by the user,
+	// should not be part of the list of arguments
+	toComplete := args[len(args)-1]
+	trimmedArgs := args[:len(args)-1]
+
+	// Find the real command for which completion must be performed
+	finalCmd, finalArgs, err := c.Root().Find(trimmedArgs)
+	if err != nil {
+		// Unable to find the real command. E.g., <program> someInvalidCmd <TAB>
+		return c, completions, ShellCompDirectiveDefault, fmt.Errorf("Unable to find a command for arguments: %v", trimmedArgs)
+	}
+
+	// When doing completion of a flag name, as soon as an argument starts with
+	// a '-' we know it is a flag.  We cannot use isFlagArg() here as it requires
+	// the flag to be complete
+	if len(toComplete) > 0 && toComplete[0] == '-' && !strings.Contains(toComplete, "=") {
+		// We are completing a flag name
+		finalCmd.NonInheritedFlags().VisitAll(func(flag *pflag.Flag) {
+			completions = append(completions, getFlagNameCompletions(flag, toComplete)...)
+		})
+		finalCmd.InheritedFlags().VisitAll(func(flag *pflag.Flag) {
+			completions = append(completions, getFlagNameCompletions(flag, toComplete)...)
+		})
+
+		directive := ShellCompDirectiveDefault
+		if len(completions) > 0 {
+			if strings.HasSuffix(completions[0], "=") {
+				directive = ShellCompDirectiveNoSpace
+			}
+		}
+		return finalCmd, completions, directive, nil
+	}
+
+	var flag *pflag.Flag
+	if !finalCmd.DisableFlagParsing {
+		// We only do flag completion if we are allowed to parse flags
+		// This is important for commands which have requested to do their own flag completion.
+		flag, finalArgs, toComplete, err = checkIfFlagCompletion(finalCmd, finalArgs, toComplete)
+		if err != nil {
+			// Error while attempting to parse flags
+			return finalCmd, completions, ShellCompDirectiveDefault, err
+		}
+	}
+
+	if flag == nil {
+		// Complete subcommand names
+		for _, subCmd := range finalCmd.Commands() {
+			if subCmd.IsAvailableCommand() && strings.HasPrefix(subCmd.Name(), toComplete) {
+				completions = append(completions, fmt.Sprintf("%s\t%s", subCmd.Name(), subCmd.Short))
+			}
+		}
+
+		if len(finalCmd.ValidArgs) > 0 {
+			// Always complete ValidArgs, even if we are completing a subcommand name.
+			// This is for commands that have both subcommands and ValidArgs.
+			for _, validArg := range finalCmd.ValidArgs {
+				if strings.HasPrefix(validArg, toComplete) {
+					completions = append(completions, validArg)
+				}
+			}
+
+			// If there are ValidArgs specified (even if they don't match), we stop completion.
+			// Only one of ValidArgs or ValidArgsFunction can be used for a single command.
+			return finalCmd, completions, ShellCompDirectiveNoFileComp, nil
+		}
+
+		// Always let the logic continue so as to add any ValidArgsFunction completions,
+		// even if we already found sub-commands.
+		// This is for commands that have subcommands but also specify a ValidArgsFunction.
+	}
+
+	// Parse the flags and extract the arguments to prepare for calling the completion function
+	if err = finalCmd.ParseFlags(finalArgs); err != nil {
+		return finalCmd, completions, ShellCompDirectiveDefault, fmt.Errorf("Error while parsing flags from args %v: %s", finalArgs, err.Error())
+	}
+
+	// We only remove the flags from the arguments if DisableFlagParsing is not set.
+	// This is important for commands which have requested to do their own flag completion.
+	if !finalCmd.DisableFlagParsing {
+		finalArgs = finalCmd.Flags().Args()
+	}
+
+	// Find the completion function for the flag or command
+	var completionFn func(cmd *Command, args []string, toComplete string) ([]string, ShellCompDirective)
+	if flag != nil {
+		completionFn = flagCompletionFunctions[flag]
+	} else {
+		completionFn = finalCmd.ValidArgsFunction
+	}
+	if completionFn == nil {
+		// Go custom completion not supported/needed for this flag or command
+		return finalCmd, completions, ShellCompDirectiveDefault, nil
+	}
+
+	// Call the registered completion function to get the completions
+	comps, directive := completionFn(finalCmd, finalArgs, toComplete)
+	completions = append(completions, comps...)
+	return finalCmd, completions, directive, nil
+}
+
+func getFlagNameCompletions(flag *pflag.Flag, toComplete string) []string {
+	if nonCompletableFlag(flag) {
+		return []string{}
+	}
+
+	var completions []string
+	flagName := "--" + flag.Name
+	if strings.HasPrefix(flagName, toComplete) {
+		// Flag without the =
+		completions = append(completions, fmt.Sprintf("%s\t%s", flagName, flag.Usage))
+
+		if len(flag.NoOptDefVal) == 0 {
+			// Flag requires a value, so it can be suffixed with =
+			flagName += "="
+			completions = append(completions, fmt.Sprintf("%s\t%s", flagName, flag.Usage))
+		}
+	}
+
+	flagName = "-" + flag.Shorthand
+	if len(flag.Shorthand) > 0 && strings.HasPrefix(flagName, toComplete) {
+		completions = append(completions, fmt.Sprintf("%s\t%s", flagName, flag.Usage))
+	}
+
+	return completions
+}
+
+func checkIfFlagCompletion(finalCmd *Command, args []string, lastArg string) (*pflag.Flag, []string, string, error) {
+	var flagName string
+	trimmedArgs := args
+	flagWithEqual := false
+	if isFlagArg(lastArg) {
+		if index := strings.Index(lastArg, "="); index >= 0 {
+			flagName = strings.TrimLeft(lastArg[:index], "-")
+			lastArg = lastArg[index+1:]
+			flagWithEqual = true
+		} else {
+			return nil, nil, "", errors.New("Unexpected completion request for flag")
+		}
+	}
+
+	if len(flagName) == 0 {
+		if len(args) > 0 {
+			prevArg := args[len(args)-1]
+			if isFlagArg(prevArg) {
+				// Only consider the case where the flag does not contain an =.
+				// If the flag contains an = it means it has already been fully processed,
+				// so we don't need to deal with it here.
+				if index := strings.Index(prevArg, "="); index < 0 {
+					flagName = strings.TrimLeft(prevArg, "-")
+
+					// Remove the uncompleted flag or else there could be an error created
+					// for an invalid value for that flag
+					trimmedArgs = args[:len(args)-1]
+				}
+			}
+		}
+	}
+
+	if len(flagName) == 0 {
+		// Not doing flag completion
+		return nil, trimmedArgs, lastArg, nil
+	}
+
+	flag := findFlag(finalCmd, flagName)
+	if flag == nil {
+		// Flag not supported by this command, nothing to complete
+		err := fmt.Errorf("Subcommand '%s' does not support flag '%s'", finalCmd.Name(), flagName)
+		return nil, nil, "", err
+	}
+
+	if !flagWithEqual {
+		if len(flag.NoOptDefVal) != 0 {
+			// We had assumed dealing with a two-word flag but the flag is a boolean flag.
+			// In that case, there is no value following it, so we are not really doing flag completion.
+			// Reset everything to do noun completion.
+			trimmedArgs = args
+			flag = nil
+		}
+	}
+
+	return flag, trimmedArgs, lastArg, nil
+}
+
+func findFlag(cmd *Command, name string) *pflag.Flag {
+	flagSet := cmd.Flags()
+	if len(name) == 1 {
+		// First convert the short flag into a long flag
+		// as the cmd.Flag() search only accepts long flags
+		if short := flagSet.ShorthandLookup(name); short != nil {
+			name = short.Name
+		} else {
+			set := cmd.InheritedFlags()
+			if short = set.ShorthandLookup(name); short != nil {
+				name = short.Name
+			} else {
+				return nil
+			}
+		}
+	}
+	return cmd.Flag(name)
+}
+
+// CompDebug prints the specified string to the same file as where the
+// completion script prints its logs.
+// Note that completion printouts should never be on stdout as they would
+// be wrongly interpreted as actual completion choices by the completion script.
+func CompDebug(msg string, printToStdErr bool) {
+	msg = fmt.Sprintf("[Debug] %s", msg)
+
+	// Such logs are only printed when the user has set the environment
+	// variable BASH_COMP_DEBUG_FILE to the path of some file to be used.
+	if path := os.Getenv("BASH_COMP_DEBUG_FILE"); path != "" {
+		f, err := os.OpenFile(path,
+			os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
+		if err == nil {
+			defer f.Close()
+			f.WriteString(msg)
+		}
+	}
+
+	if printToStdErr {
+		// Must print to stderr for this not to be read by the completion script.
+		fmt.Fprintf(os.Stderr, msg)
+	}
+}
+
+// CompDebugln prints the specified string with a newline at the end
+// to the same file as where the completion script prints its logs.
+// Such logs are only printed when the user has set the environment
+// variable BASH_COMP_DEBUG_FILE to the path of some file to be used.
+func CompDebugln(msg string, printToStdErr bool) {
+	CompDebug(fmt.Sprintf("%s\n", msg), printToStdErr)
+}
+
+// CompError prints the specified completion message to stderr.
+func CompError(msg string) {
+	msg = fmt.Sprintf("[Error] %s", msg)
+	CompDebug(msg, true)
+}
+
+// CompErrorln prints the specified completion message to stderr with a newline at the end.
+func CompErrorln(msg string) {
+	CompError(fmt.Sprintf("%s\n", msg))
+}

vendor/github.com/spf13/cobra/fish_completions.go

@@ -0,0 +1,172 @@
+package cobra
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"os"
+)
+
+func genFishComp(buf *bytes.Buffer, name string, includeDesc bool) {
+	compCmd := ShellCompRequestCmd
+	if !includeDesc {
+		compCmd = ShellCompNoDescRequestCmd
+	}
+	buf.WriteString(fmt.Sprintf("# fish completion for %-36s -*- shell-script -*-\n", name))
+	buf.WriteString(fmt.Sprintf(`
+function __%[1]s_debug
+    set file "$BASH_COMP_DEBUG_FILE"
+    if test -n "$file"
+        echo "$argv" >> $file
+    end
+end
+
+function __%[1]s_perform_completion
+    __%[1]s_debug "Starting __%[1]s_perform_completion with: $argv"
+
+    set args (string split -- " " "$argv")
+    set lastArg "$args[-1]"
+
+    __%[1]s_debug "args: $args"
+    __%[1]s_debug "last arg: $lastArg"
+
+    set emptyArg ""
+    if test -z "$lastArg"
+        __%[1]s_debug "Setting emptyArg"
+        set emptyArg \"\"
+    end
+    __%[1]s_debug "emptyArg: $emptyArg"
+
+    set requestComp "$args[1] %[2]s $args[2..-1] $emptyArg"
+    __%[1]s_debug "Calling $requestComp"
+
+    set results (eval $requestComp 2> /dev/null)
+    set comps $results[1..-2]
+    set directiveLine $results[-1]
+
+    # For Fish, when completing a flag with an = (e.g., <program> -n=<TAB>)
+    # completions must be prefixed with the flag
+    set flagPrefix (string match -r -- '-.*=' "$lastArg")
+
+    __%[1]s_debug "Comps: $comps"
+    __%[1]s_debug "DirectiveLine: $directiveLine"
+    __%[1]s_debug "flagPrefix: $flagPrefix"
+
+    for comp in $comps
+        printf "%%s%%s\n" "$flagPrefix" "$comp"
+    end
+
+    printf "%%s\n" "$directiveLine"
+end
+
+# This function does three things:
+# 1- Obtain the completions and store them in the global __%[1]s_comp_results
+# 2- Set the __%[1]s_comp_do_file_comp flag if file completion should be performed
+#    and unset it otherwise
+# 3- Return true if the completion results are not empty
+function __%[1]s_prepare_completions
+    # Start fresh
+    set --erase __%[1]s_comp_do_file_comp
+    set --erase __%[1]s_comp_results
+
+    # Check if the command-line is already provided.  This is useful for testing.
+    if not set --query __%[1]s_comp_commandLine
+        set __%[1]s_comp_commandLine (commandline)
+    end
+    __%[1]s_debug "commandLine is: $__%[1]s_comp_commandLine"
+
+    set results (__%[1]s_perform_completion "$__%[1]s_comp_commandLine")
+    set --erase __%[1]s_comp_commandLine
+    __%[1]s_debug "Completion results: $results"
+
+    if test -z "$results"
+        __%[1]s_debug "No completion, probably due to a failure"
+        # Might as well do file completion, in case it helps
+        set --global __%[1]s_comp_do_file_comp 1
+        return 0
+    end
+
+    set directive (string sub --start 2 $results[-1])
+    set --global __%[1]s_comp_results $results[1..-2]
+
+    __%[1]s_debug "Completions are: $__%[1]s_comp_results"
+    __%[1]s_debug "Directive is: $directive"
+
+    if test -z "$directive"
+        set directive 0
+    end
+
+    set compErr (math (math --scale 0 $directive / %[3]d) %% 2)
+    if test $compErr -eq 1
+        __%[1]s_debug "Received error directive: aborting."
+        # Might as well do file completion, in case it helps
+        set --global __%[1]s_comp_do_file_comp 1
+        return 0
+    end
+
+    set nospace (math (math --scale 0 $directive / %[4]d) %% 2)
+    set nofiles (math (math --scale 0 $directive / %[5]d) %% 2)
+
+    __%[1]s_debug "nospace: $nospace, nofiles: $nofiles"
+
+    # Important not to quote the variable for count to work
+    set numComps (count $__%[1]s_comp_results)
+    __%[1]s_debug "numComps: $numComps"
+
+    if test $numComps -eq 1; and test $nospace -ne 0
+        # To support the "nospace" directive we trick the shell
+        # by outputting an extra, longer completion.
+        __%[1]s_debug "Adding second completion to perform nospace directive"
+        set --append __%[1]s_comp_results $__%[1]s_comp_results[1].
+    end
+
+    if test $numComps -eq 0; and test $nofiles -eq 0
+        __%[1]s_debug "Requesting file completion"
+        set --global __%[1]s_comp_do_file_comp 1
+    end
+
+    # If we don't want file completion, we must return true even if there
+    # are no completions found.  This is because fish will perform the last
+    # completion command, even if its condition is false, if no other
+    # completion command was triggered
+    return (not set --query __%[1]s_comp_do_file_comp)
+end
+
+# Remove any pre-existing completions for the program since we will be handling all of them
+# TODO this cleanup is not sufficient.  Fish completions are only loaded once the user triggers
+# them, so the below deletion will not work as it is run too early.  What else can we do?
+complete -c %[1]s -e
+
+# The order in which the below two lines are defined is very important so that __%[1]s_prepare_completions
+# is called first.  It is __%[1]s_prepare_completions that sets up the __%[1]s_comp_do_file_comp variable.
+#
+# This completion will be run second as complete commands are added FILO.
+# It triggers file completion choices when __%[1]s_comp_do_file_comp is set.
+complete -c %[1]s -n 'set --query __%[1]s_comp_do_file_comp'
+
+# This completion will be run first as complete commands are added FILO.
+# The call to __%[1]s_prepare_completions will setup both __%[1]s_comp_results abd __%[1]s_comp_do_file_comp.
+# It provides the program's completion choices.
+complete -c %[1]s -n '__%[1]s_prepare_completions' -f -a '$__%[1]s_comp_results'
+
+`, name, compCmd, ShellCompDirectiveError, ShellCompDirectiveNoSpace, ShellCompDirectiveNoFileComp))
+}
+
+// GenFishCompletion generates fish completion file and writes to the passed writer.
+func (c *Command) GenFishCompletion(w io.Writer, includeDesc bool) error {
+	buf := new(bytes.Buffer)
+	genFishComp(buf, c.Name(), includeDesc)
+	_, err := buf.WriteTo(w)
+	return err
+}
+
+// GenFishCompletionFile generates fish completion file.
+func (c *Command) GenFishCompletionFile(filename string, includeDesc bool) error {
+	outFile, err := os.Create(filename)
+	if err != nil {
+		return err
+	}
+	defer outFile.Close()
+
+	return c.GenFishCompletion(outFile, includeDesc)
+}

vendor/github.com/spf13/cobra/fish_completions.md

@@ -0,0 +1,7 @@
+## Generating Fish Completions for your own cobra.Command
+
+Cobra supports native Fish completions generated from the root `cobra.Command`.  You can use the `command.GenFishCompletion()` or `command.GenFishCompletionFile()` functions. You must provide these functions with a parameter indicating if the completions should be annotated with a description; Cobra will provide the description automatically based on usage information.  You can choose to make this option configurable by your users.
+
+### Limitations
+
+* Custom completions implemented using the `ValidArgsFunction` and `RegisterFlagCompletionFunc()` are supported automatically but the ones implemented in Bash scripting are not.

vendor/github.com/spf13/cobra/go.mod

@@ -3,11 +3,10 @@ module github.com/spf13/cobra
 go 1.12
 
 require (
-	github.com/BurntSushi/toml v0.3.1 // indirect
+	github.com/cpuguy83/go-md2man/v2 v2.0.0
-	github.com/cpuguy83/go-md2man v1.0.10
 	github.com/inconshreveable/mousetrap v1.0.0
 	github.com/mitchellh/go-homedir v1.1.0
 	github.com/spf13/pflag v1.0.3
-	github.com/spf13/viper v1.3.2
+	github.com/spf13/viper v1.4.0
 	gopkg.in/yaml.v2 v2.2.2
 )

vendor/github.com/spf13/cobra/go.sum

@@ -1,31 +1,91 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
+github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
+github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
+github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
+github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
+github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
+github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
+github.com/coreos/bbolt v1.3.2/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk=
 github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
-github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8NzMklzPG4d5KIOhIy30Tk=
 github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
-github.com/cpuguy83/go-md2man v1.0.10 h1:BSKMNlYxDvnunlTymqtgONjNnaRV1sTpcovwwjF22jk=
+github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
-github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE=
+github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
+github.com/cpuguy83/go-md2man/v2 v2.0.0 h1:EoUDS0afbrsXAZ9YQ9jdu/mZ2sXgT1/2yyNng4PGlyM=
+github.com/cpuguy83/go-md2man/v2 v2.0.0/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
+github.com/dgryski/go-sip13 v0.0.0-20181026042036-e10d5fee7954/go.mod h1:vAd38F8PWV+bWy6jNmig1y/TA+kYO4g3RSRF0IAv0no=
 github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
+github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
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+gopkg.in/yaml.v2 v2.0.0-20170812160011-eb3733d160e7/go.mod h1:JAlM8MvJe8wmxCU4Bli9HhUf9+ttbYbLASfIpnQbh74=
+gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

vendor/github.com/spf13/pflag/.travis.yml

@@ -3,8 +3,9 @@ sudo: false
 language: go
 
 go:
-  - 1.7.3
+  - 1.9.x
-  - 1.8.1
+  - 1.10.x
+  - 1.11.x
   - tip
 
 matrix:
@@ -12,7 +13,7 @@ matrix:
     - go: tip
 
 install:
-  - go get github.com/golang/lint/golint
+  - go get golang.org/x/lint/golint
   - export PATH=$GOPATH/bin:$PATH
   - go install ./...
 

vendor/github.com/spf13/pflag/README.md

@@ -86,8 +86,8 @@ fmt.Println("ip has value ", *ip)
 fmt.Println("flagvar has value ", flagvar)
 ```
 
-There are helpers function to get values later if you have the FlagSet but
+There are helper functions available to get the value stored in a Flag if you have a FlagSet but find
-it was difficult to keep up with all of the flag pointers in your code.
+it difficult to keep up with all of the pointers in your code.
 If you have a pflag.FlagSet with a flag called 'flagname' of type int you
 can use GetInt() to get the int value. But notice that 'flagname' must exist
 and it must be an int. GetString("flagname") will fail.

vendor/github.com/spf13/pflag/bool_slice.go

@@ -71,6 +71,44 @@ func (s *boolSliceValue) String() string {
 	return "[" + out + "]"
 }
 
+func (s *boolSliceValue) fromString(val string) (bool, error) {
+	return strconv.ParseBool(val)
+}
+
+func (s *boolSliceValue) toString(val bool) string {
+	return strconv.FormatBool(val)
+}
+
+func (s *boolSliceValue) Append(val string) error {
+	i, err := s.fromString(val)
+	if err != nil {
+		return err
+	}
+	*s.value = append(*s.value, i)
+	return nil
+}
+
+func (s *boolSliceValue) Replace(val []string) error {
+	out := make([]bool, len(val))
+	for i, d := range val {
+		var err error
+		out[i], err = s.fromString(d)
+		if err != nil {
+			return err
+		}
+	}
+	*s.value = out
+	return nil
+}
+
+func (s *boolSliceValue) GetSlice() []string {
+	out := make([]string, len(*s.value))
+	for i, d := range *s.value {
+		out[i] = s.toString(d)
+	}
+	return out
+}
+
 func boolSliceConv(val string) (interface{}, error) {
 	val = strings.Trim(val, "[]")
 	// Empty string would cause a slice with one (empty) entry

vendor/github.com/spf13/pflag/count.go

@@ -46,7 +46,7 @@ func (f *FlagSet) GetCount(name string) (int, error) {
 
 // CountVar defines a count flag with specified name, default value, and usage string.
 // The argument p points to an int variable in which to store the value of the flag.
-// A count flag will add 1 to its value evey time it is found on the command line
+// A count flag will add 1 to its value every time it is found on the command line
 func (f *FlagSet) CountVar(p *int, name string, usage string) {
 	f.CountVarP(p, name, "", usage)
 }
@@ -69,7 +69,7 @@ func CountVarP(p *int, name, shorthand string, usage string) {
 
 // Count defines a count flag with specified name, default value, and usage string.
 // The return value is the address of an int variable that stores the value of the flag.
-// A count flag will add 1 to its value evey time it is found on the command line
+// A count flag will add 1 to its value every time it is found on the command line
 func (f *FlagSet) Count(name string, usage string) *int {
 	p := new(int)
 	f.CountVarP(p, name, "", usage)

vendor/github.com/spf13/pflag/duration_slice.go

@@ -51,6 +51,44 @@ func (s *durationSliceValue) String() string {
 	return "[" + strings.Join(out, ",") + "]"
 }
 
+func (s *durationSliceValue) fromString(val string) (time.Duration, error) {
+	return time.ParseDuration(val)
+}
+
+func (s *durationSliceValue) toString(val time.Duration) string {
+	return fmt.Sprintf("%s", val)
+}
+
+func (s *durationSliceValue) Append(val string) error {
+	i, err := s.fromString(val)
+	if err != nil {
+		return err
+	}
+	*s.value = append(*s.value, i)
+	return nil
+}
+
+func (s *durationSliceValue) Replace(val []string) error {
+	out := make([]time.Duration, len(val))
+	for i, d := range val {
+		var err error
+		out[i], err = s.fromString(d)
+		if err != nil {
+			return err
+		}
+	}
+	*s.value = out
+	return nil
+}
+
+func (s *durationSliceValue) GetSlice() []string {
+	out := make([]string, len(*s.value))
+	for i, d := range *s.value {
+		out[i] = s.toString(d)
+	}
+	return out
+}
+
 func durationSliceConv(val string) (interface{}, error) {
 	val = strings.Trim(val, "[]")
 	// Empty string would cause a slice with one (empty) entry

vendor/github.com/spf13/pflag/flag.go

@@ -57,9 +57,9 @@ that give one-letter shorthands for flags. You can use these by appending
 	var ip = flag.IntP("flagname", "f", 1234, "help message")
 	var flagvar bool
 	func init() {
-		flag.BoolVarP("boolname", "b", true, "help message")
+		flag.BoolVarP(&flagvar, "boolname", "b", true, "help message")
 	}
-	flag.VarP(&flagVar, "varname", "v", 1234, "help message")
+	flag.VarP(&flagval, "varname", "v", "help message")
 Shorthand letters can be used with single dashes on the command line.
 Boolean shorthand flags can be combined with other shorthand flags.
 
@@ -190,6 +190,18 @@ type Value interface {
 	Type() string
 }
 
+// SliceValue is a secondary interface to all flags which hold a list
+// of values.  This allows full control over the value of list flags,
+// and avoids complicated marshalling and unmarshalling to csv.
+type SliceValue interface {
+	// Append adds the specified value to the end of the flag value list.
+	Append(string) error
+	// Replace will fully overwrite any data currently in the flag value list.
+	Replace([]string) error
+	// GetSlice returns the flag value list as an array of strings.
+	GetSlice() []string
+}
+
 // sortFlags returns the flags as a slice in lexicographical sorted order.
 func sortFlags(flags map[NormalizedName]*Flag) []*Flag {
 	list := make(sort.StringSlice, len(flags))

vendor/github.com/spf13/pflag/float32_slice.go

@@ -0,0 +1,174 @@
+package pflag
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// -- float32Slice Value
+type float32SliceValue struct {
+	value   *[]float32
+	changed bool
+}
+
+func newFloat32SliceValue(val []float32, p *[]float32) *float32SliceValue {
+	isv := new(float32SliceValue)
+	isv.value = p
+	*isv.value = val
+	return isv
+}
+
+func (s *float32SliceValue) Set(val string) error {
+	ss := strings.Split(val, ",")
+	out := make([]float32, len(ss))
+	for i, d := range ss {
+		var err error
+		var temp64 float64
+		temp64, err = strconv.ParseFloat(d, 32)
+		if err != nil {
+			return err
+		}
+		out[i] = float32(temp64)
+
+	}
+	if !s.changed {
+		*s.value = out
+	} else {
+		*s.value = append(*s.value, out...)
+	}
+	s.changed = true
+	return nil
+}
+
+func (s *float32SliceValue) Type() string {
+	return "float32Slice"
+}
+
+func (s *float32SliceValue) String() string {
+	out := make([]string, len(*s.value))
+	for i, d := range *s.value {
+		out[i] = fmt.Sprintf("%f", d)
+	}
+	return "[" + strings.Join(out, ",") + "]"
+}
+
+func (s *float32SliceValue) fromString(val string) (float32, error) {
+	t64, err := strconv.ParseFloat(val, 32)
+	if err != nil {
+		return 0, err
+	}
+	return float32(t64), nil
+}
+
+func (s *float32SliceValue) toString(val float32) string {
+	return fmt.Sprintf("%f", val)
+}
+
+func (s *float32SliceValue) Append(val string) error {
+	i, err := s.fromString(val)
+	if err != nil {
+		return err
+	}
+	*s.value = append(*s.value, i)
+	return nil
+}
+
+func (s *float32SliceValue) Replace(val []string) error {
+	out := make([]float32, len(val))
+	for i, d := range val {
+		var err error
+		out[i], err = s.fromString(d)
+		if err != nil {
+			return err
+		}
+	}
+	*s.value = out
+	return nil
+}
+
+func (s *float32SliceValue) GetSlice() []string {
+	out := make([]string, len(*s.value))
+	for i, d := range *s.value {
+		out[i] = s.toString(d)
+	}
+	return out
+}
+
+func float32SliceConv(val string) (interface{}, error) {
+	val = strings.Trim(val, "[]")
+	// Empty string would cause a slice with one (empty) entry
+	if len(val) == 0 {
+		return []float32{}, nil
+	}
+	ss := strings.Split(val, ",")
+	out := make([]float32, len(ss))
+	for i, d := range ss {
+		var err error
+		var temp64 float64
+		temp64, err = strconv.ParseFloat(d, 32)
+		if err != nil {
+			return nil, err
+		}
+		out[i] = float32(temp64)
+
+	}
+	return out, nil
+}
+
+// GetFloat32Slice return the []float32 value of a flag with the given name
+func (f *FlagSet) GetFloat32Slice(name string) ([]float32, error) {
+	val, err := f.getFlagType(name, "float32Slice", float32SliceConv)
+	if err != nil {
+		return []float32{}, err
+	}
+	return val.([]float32), nil
+}
+
+// Float32SliceVar defines a float32Slice flag with specified name, default value, and usage string.
+// The argument p points to a []float32 variable in which to store the value of the flag.
+func (f *FlagSet) Float32SliceVar(p *[]float32, name string, value []float32, usage string) {
+	f.VarP(newFloat32SliceValue(value, p), name, "", usage)
+}
+
+// Float32SliceVarP is like Float32SliceVar, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Float32SliceVarP(p *[]float32, name, shorthand string, value []float32, usage string) {
+	f.VarP(newFloat32SliceValue(value, p), name, shorthand, usage)
+}
+
+// Float32SliceVar defines a float32[] flag with specified name, default value, and usage string.
+// The argument p points to a float32[] variable in which to store the value of the flag.
+func Float32SliceVar(p *[]float32, name string, value []float32, usage string) {
+	CommandLine.VarP(newFloat32SliceValue(value, p), name, "", usage)
+}
+
+// Float32SliceVarP is like Float32SliceVar, but accepts a shorthand letter that can be used after a single dash.
+func Float32SliceVarP(p *[]float32, name, shorthand string, value []float32, usage string) {
+	CommandLine.VarP(newFloat32SliceValue(value, p), name, shorthand, usage)
+}
+
+// Float32Slice defines a []float32 flag with specified name, default value, and usage string.
+// The return value is the address of a []float32 variable that stores the value of the flag.
+func (f *FlagSet) Float32Slice(name string, value []float32, usage string) *[]float32 {
+	p := []float32{}
+	f.Float32SliceVarP(&p, name, "", value, usage)
+	return &p
+}
+
+// Float32SliceP is like Float32Slice, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Float32SliceP(name, shorthand string, value []float32, usage string) *[]float32 {
+	p := []float32{}
+	f.Float32SliceVarP(&p, name, shorthand, value, usage)
+	return &p
+}
+
+// Float32Slice defines a []float32 flag with specified name, default value, and usage string.
+// The return value is the address of a []float32 variable that stores the value of the flag.
+func Float32Slice(name string, value []float32, usage string) *[]float32 {
+	return CommandLine.Float32SliceP(name, "", value, usage)
+}
+
+// Float32SliceP is like Float32Slice, but accepts a shorthand letter that can be used after a single dash.
+func Float32SliceP(name, shorthand string, value []float32, usage string) *[]float32 {
+	return CommandLine.Float32SliceP(name, shorthand, value, usage)
+}

vendor/github.com/spf13/pflag/float64_slice.go

@@ -0,0 +1,166 @@
+package pflag
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// -- float64Slice Value
+type float64SliceValue struct {
+	value   *[]float64
+	changed bool
+}
+
+func newFloat64SliceValue(val []float64, p *[]float64) *float64SliceValue {
+	isv := new(float64SliceValue)
+	isv.value = p
+	*isv.value = val
+	return isv
+}
+
+func (s *float64SliceValue) Set(val string) error {
+	ss := strings.Split(val, ",")
+	out := make([]float64, len(ss))
+	for i, d := range ss {
+		var err error
+		out[i], err = strconv.ParseFloat(d, 64)
+		if err != nil {
+			return err
+		}
+
+	}
+	if !s.changed {
+		*s.value = out
+	} else {
+		*s.value = append(*s.value, out...)
+	}
+	s.changed = true
+	return nil
+}
+
+func (s *float64SliceValue) Type() string {
+	return "float64Slice"
+}
+
+func (s *float64SliceValue) String() string {
+	out := make([]string, len(*s.value))
+	for i, d := range *s.value {
+		out[i] = fmt.Sprintf("%f", d)
+	}
+	return "[" + strings.Join(out, ",") + "]"
+}
+
+func (s *float64SliceValue) fromString(val string) (float64, error) {
+	return strconv.ParseFloat(val, 64)
+}
+
+func (s *float64SliceValue) toString(val float64) string {
+	return fmt.Sprintf("%f", val)
+}
+
+func (s *float64SliceValue) Append(val string) error {
+	i, err := s.fromString(val)
+	if err != nil {
+		return err
+	}
+	*s.value = append(*s.value, i)
+	return nil
+}
+
+func (s *float64SliceValue) Replace(val []string) error {
+	out := make([]float64, len(val))
+	for i, d := range val {
+		var err error
+		out[i], err = s.fromString(d)
+		if err != nil {
+			return err
+		}
+	}
+	*s.value = out
+	return nil
+}
+
+func (s *float64SliceValue) GetSlice() []string {
+	out := make([]string, len(*s.value))
+	for i, d := range *s.value {
+		out[i] = s.toString(d)
+	}
+	return out
+}
+
+func float64SliceConv(val string) (interface{}, error) {
+	val = strings.Trim(val, "[]")
+	// Empty string would cause a slice with one (empty) entry
+	if len(val) == 0 {
+		return []float64{}, nil
+	}
+	ss := strings.Split(val, ",")
+	out := make([]float64, len(ss))
+	for i, d := range ss {
+		var err error
+		out[i], err = strconv.ParseFloat(d, 64)
+		if err != nil {
+			return nil, err
+		}
+
+	}
+	return out, nil
+}
+
+// GetFloat64Slice return the []float64 value of a flag with the given name
+func (f *FlagSet) GetFloat64Slice(name string) ([]float64, error) {
+	val, err := f.getFlagType(name, "float64Slice", float64SliceConv)
+	if err != nil {
+		return []float64{}, err
+	}
+	return val.([]float64), nil
+}
+
+// Float64SliceVar defines a float64Slice flag with specified name, default value, and usage string.
+// The argument p points to a []float64 variable in which to store the value of the flag.
+func (f *FlagSet) Float64SliceVar(p *[]float64, name string, value []float64, usage string) {
+	f.VarP(newFloat64SliceValue(value, p), name, "", usage)
+}
+
+// Float64SliceVarP is like Float64SliceVar, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Float64SliceVarP(p *[]float64, name, shorthand string, value []float64, usage string) {
+	f.VarP(newFloat64SliceValue(value, p), name, shorthand, usage)
+}
+
+// Float64SliceVar defines a float64[] flag with specified name, default value, and usage string.
+// The argument p points to a float64[] variable in which to store the value of the flag.
+func Float64SliceVar(p *[]float64, name string, value []float64, usage string) {
+	CommandLine.VarP(newFloat64SliceValue(value, p), name, "", usage)
+}
+
+// Float64SliceVarP is like Float64SliceVar, but accepts a shorthand letter that can be used after a single dash.
+func Float64SliceVarP(p *[]float64, name, shorthand string, value []float64, usage string) {
+	CommandLine.VarP(newFloat64SliceValue(value, p), name, shorthand, usage)
+}
+
+// Float64Slice defines a []float64 flag with specified name, default value, and usage string.
+// The return value is the address of a []float64 variable that stores the value of the flag.
+func (f *FlagSet) Float64Slice(name string, value []float64, usage string) *[]float64 {
+	p := []float64{}
+	f.Float64SliceVarP(&p, name, "", value, usage)
+	return &p
+}
+
+// Float64SliceP is like Float64Slice, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Float64SliceP(name, shorthand string, value []float64, usage string) *[]float64 {
+	p := []float64{}
+	f.Float64SliceVarP(&p, name, shorthand, value, usage)
+	return &p
+}
+
+// Float64Slice defines a []float64 flag with specified name, default value, and usage string.
+// The return value is the address of a []float64 variable that stores the value of the flag.
+func Float64Slice(name string, value []float64, usage string) *[]float64 {
+	return CommandLine.Float64SliceP(name, "", value, usage)
+}
+
+// Float64SliceP is like Float64Slice, but accepts a shorthand letter that can be used after a single dash.
+func Float64SliceP(name, shorthand string, value []float64, usage string) *[]float64 {
+	return CommandLine.Float64SliceP(name, shorthand, value, usage)
+}

vendor/github.com/spf13/pflag/go.mod

@@ -0,0 +1,3 @@
+module github.com/spf13/pflag
+
+go 1.12

vendor/github.com/spf13/pflag/int32_slice.go

@@ -0,0 +1,174 @@
+package pflag
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// -- int32Slice Value
+type int32SliceValue struct {
+	value   *[]int32
+	changed bool
+}
+
+func newInt32SliceValue(val []int32, p *[]int32) *int32SliceValue {
+	isv := new(int32SliceValue)
+	isv.value = p
+	*isv.value = val
+	return isv
+}
+
+func (s *int32SliceValue) Set(val string) error {
+	ss := strings.Split(val, ",")
+	out := make([]int32, len(ss))
+	for i, d := range ss {
+		var err error
+		var temp64 int64
+		temp64, err = strconv.ParseInt(d, 0, 32)
+		if err != nil {
+			return err
+		}
+		out[i] = int32(temp64)
+
+	}
+	if !s.changed {
+		*s.value = out
+	} else {
+		*s.value = append(*s.value, out...)
+	}
+	s.changed = true
+	return nil
+}
+
+func (s *int32SliceValue) Type() string {
+	return "int32Slice"
+}
+
+func (s *int32SliceValue) String() string {
+	out := make([]string, len(*s.value))
+	for i, d := range *s.value {
+		out[i] = fmt.Sprintf("%d", d)
+	}
+	return "[" + strings.Join(out, ",") + "]"
+}
+
+func (s *int32SliceValue) fromString(val string) (int32, error) {
+	t64, err := strconv.ParseInt(val, 0, 32)
+	if err != nil {
+		return 0, err
+	}
+	return int32(t64), nil
+}
+
+func (s *int32SliceValue) toString(val int32) string {
+	return fmt.Sprintf("%d", val)
+}
+
+func (s *int32SliceValue) Append(val string) error {
+	i, err := s.fromString(val)
+	if err != nil {
+		return err
+	}
+	*s.value = append(*s.value, i)
+	return nil
+}
+
+func (s *int32SliceValue) Replace(val []string) error {
+	out := make([]int32, len(val))
+	for i, d := range val {
+		var err error
+		out[i], err = s.fromString(d)
+		if err != nil {
+			return err
+		}
+	}
+	*s.value = out
+	return nil
+}
+
+func (s *int32SliceValue) GetSlice() []string {
+	out := make([]string, len(*s.value))
+	for i, d := range *s.value {
+		out[i] = s.toString(d)
+	}
+	return out
+}
+
+func int32SliceConv(val string) (interface{}, error) {
+	val = strings.Trim(val, "[]")
+	// Empty string would cause a slice with one (empty) entry
+	if len(val) == 0 {
+		return []int32{}, nil
+	}
+	ss := strings.Split(val, ",")
+	out := make([]int32, len(ss))
+	for i, d := range ss {
+		var err error
+		var temp64 int64
+		temp64, err = strconv.ParseInt(d, 0, 32)
+		if err != nil {
+			return nil, err
+		}
+		out[i] = int32(temp64)
+
+	}
+	return out, nil
+}
+
+// GetInt32Slice return the []int32 value of a flag with the given name
+func (f *FlagSet) GetInt32Slice(name string) ([]int32, error) {
+	val, err := f.getFlagType(name, "int32Slice", int32SliceConv)
+	if err != nil {
+		return []int32{}, err
+	}
+	return val.([]int32), nil
+}
+
+// Int32SliceVar defines a int32Slice flag with specified name, default value, and usage string.
+// The argument p points to a []int32 variable in which to store the value of the flag.
+func (f *FlagSet) Int32SliceVar(p *[]int32, name string, value []int32, usage string) {
+	f.VarP(newInt32SliceValue(value, p), name, "", usage)
+}
+
+// Int32SliceVarP is like Int32SliceVar, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Int32SliceVarP(p *[]int32, name, shorthand string, value []int32, usage string) {
+	f.VarP(newInt32SliceValue(value, p), name, shorthand, usage)
+}
+
+// Int32SliceVar defines a int32[] flag with specified name, default value, and usage string.
+// The argument p points to a int32[] variable in which to store the value of the flag.
+func Int32SliceVar(p *[]int32, name string, value []int32, usage string) {
+	CommandLine.VarP(newInt32SliceValue(value, p), name, "", usage)
+}
+
+// Int32SliceVarP is like Int32SliceVar, but accepts a shorthand letter that can be used after a single dash.
+func Int32SliceVarP(p *[]int32, name, shorthand string, value []int32, usage string) {
+	CommandLine.VarP(newInt32SliceValue(value, p), name, shorthand, usage)
+}
+
+// Int32Slice defines a []int32 flag with specified name, default value, and usage string.
+// The return value is the address of a []int32 variable that stores the value of the flag.
+func (f *FlagSet) Int32Slice(name string, value []int32, usage string) *[]int32 {
+	p := []int32{}
+	f.Int32SliceVarP(&p, name, "", value, usage)
+	return &p
+}
+
+// Int32SliceP is like Int32Slice, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Int32SliceP(name, shorthand string, value []int32, usage string) *[]int32 {
+	p := []int32{}
+	f.Int32SliceVarP(&p, name, shorthand, value, usage)
+	return &p
+}
+
+// Int32Slice defines a []int32 flag with specified name, default value, and usage string.
+// The return value is the address of a []int32 variable that stores the value of the flag.
+func Int32Slice(name string, value []int32, usage string) *[]int32 {
+	return CommandLine.Int32SliceP(name, "", value, usage)
+}
+
+// Int32SliceP is like Int32Slice, but accepts a shorthand letter that can be used after a single dash.
+func Int32SliceP(name, shorthand string, value []int32, usage string) *[]int32 {
+	return CommandLine.Int32SliceP(name, shorthand, value, usage)
+}

vendor/github.com/spf13/pflag/int64_slice.go

@@ -0,0 +1,166 @@
+package pflag
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// -- int64Slice Value
+type int64SliceValue struct {
+	value   *[]int64
+	changed bool
+}
+
+func newInt64SliceValue(val []int64, p *[]int64) *int64SliceValue {
+	isv := new(int64SliceValue)
+	isv.value = p
+	*isv.value = val
+	return isv
+}
+
+func (s *int64SliceValue) Set(val string) error {
+	ss := strings.Split(val, ",")
+	out := make([]int64, len(ss))
+	for i, d := range ss {
+		var err error
+		out[i], err = strconv.ParseInt(d, 0, 64)
+		if err != nil {
+			return err
+		}
+
+	}
+	if !s.changed {
+		*s.value = out
+	} else {
+		*s.value = append(*s.value, out...)
+	}
+	s.changed = true
+	return nil
+}
+
+func (s *int64SliceValue) Type() string {
+	return "int64Slice"
+}
+
+func (s *int64SliceValue) String() string {
+	out := make([]string, len(*s.value))
+	for i, d := range *s.value {
+		out[i] = fmt.Sprintf("%d", d)
+	}
+	return "[" + strings.Join(out, ",") + "]"
+}
+
+func (s *int64SliceValue) fromString(val string) (int64, error) {
+	return strconv.ParseInt(val, 0, 64)
+}
+
+func (s *int64SliceValue) toString(val int64) string {
+	return fmt.Sprintf("%d", val)
+}
+
+func (s *int64SliceValue) Append(val string) error {
+	i, err := s.fromString(val)
+	if err != nil {
+		return err
+	}
+	*s.value = append(*s.value, i)
+	return nil
+}
+
+func (s *int64SliceValue) Replace(val []string) error {
+	out := make([]int64, len(val))
+	for i, d := range val {
+		var err error
+		out[i], err = s.fromString(d)
+		if err != nil {
+			return err
+		}
+	}
+	*s.value = out
+	return nil
+}
+
+func (s *int64SliceValue) GetSlice() []string {
+	out := make([]string, len(*s.value))
+	for i, d := range *s.value {
+		out[i] = s.toString(d)
+	}
+	return out
+}
+
+func int64SliceConv(val string) (interface{}, error) {
+	val = strings.Trim(val, "[]")
+	// Empty string would cause a slice with one (empty) entry
+	if len(val) == 0 {
+		return []int64{}, nil
+	}
+	ss := strings.Split(val, ",")
+	out := make([]int64, len(ss))
+	for i, d := range ss {
+		var err error
+		out[i], err = strconv.ParseInt(d, 0, 64)
+		if err != nil {
+			return nil, err
+		}
+
+	}
+	return out, nil
+}
+
+// GetInt64Slice return the []int64 value of a flag with the given name
+func (f *FlagSet) GetInt64Slice(name string) ([]int64, error) {
+	val, err := f.getFlagType(name, "int64Slice", int64SliceConv)
+	if err != nil {
+		return []int64{}, err
+	}
+	return val.([]int64), nil
+}
+
+// Int64SliceVar defines a int64Slice flag with specified name, default value, and usage string.
+// The argument p points to a []int64 variable in which to store the value of the flag.
+func (f *FlagSet) Int64SliceVar(p *[]int64, name string, value []int64, usage string) {
+	f.VarP(newInt64SliceValue(value, p), name, "", usage)
+}
+
+// Int64SliceVarP is like Int64SliceVar, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Int64SliceVarP(p *[]int64, name, shorthand string, value []int64, usage string) {
+	f.VarP(newInt64SliceValue(value, p), name, shorthand, usage)
+}
+
+// Int64SliceVar defines a int64[] flag with specified name, default value, and usage string.
+// The argument p points to a int64[] variable in which to store the value of the flag.
+func Int64SliceVar(p *[]int64, name string, value []int64, usage string) {
+	CommandLine.VarP(newInt64SliceValue(value, p), name, "", usage)
+}
+
+// Int64SliceVarP is like Int64SliceVar, but accepts a shorthand letter that can be used after a single dash.
+func Int64SliceVarP(p *[]int64, name, shorthand string, value []int64, usage string) {
+	CommandLine.VarP(newInt64SliceValue(value, p), name, shorthand, usage)
+}
+
+// Int64Slice defines a []int64 flag with specified name, default value, and usage string.
+// The return value is the address of a []int64 variable that stores the value of the flag.
+func (f *FlagSet) Int64Slice(name string, value []int64, usage string) *[]int64 {
+	p := []int64{}
+	f.Int64SliceVarP(&p, name, "", value, usage)
+	return &p
+}
+
+// Int64SliceP is like Int64Slice, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Int64SliceP(name, shorthand string, value []int64, usage string) *[]int64 {
+	p := []int64{}
+	f.Int64SliceVarP(&p, name, shorthand, value, usage)
+	return &p
+}
+
+// Int64Slice defines a []int64 flag with specified name, default value, and usage string.
+// The return value is the address of a []int64 variable that stores the value of the flag.
+func Int64Slice(name string, value []int64, usage string) *[]int64 {
+	return CommandLine.Int64SliceP(name, "", value, usage)
+}
+
+// Int64SliceP is like Int64Slice, but accepts a shorthand letter that can be used after a single dash.
+func Int64SliceP(name, shorthand string, value []int64, usage string) *[]int64 {
+	return CommandLine.Int64SliceP(name, shorthand, value, usage)
+}

vendor/github.com/spf13/pflag/int_slice.go

@@ -51,6 +51,36 @@ func (s *intSliceValue) String() string {
 	return "[" + strings.Join(out, ",") + "]"
 }
 
+func (s *intSliceValue) Append(val string) error {
+	i, err := strconv.Atoi(val)
+	if err != nil {
+		return err
+	}
+	*s.value = append(*s.value, i)
+	return nil
+}
+
+func (s *intSliceValue) Replace(val []string) error {
+	out := make([]int, len(val))
+	for i, d := range val {
+		var err error
+		out[i], err = strconv.Atoi(d)
+		if err != nil {
+			return err
+		}
+	}
+	*s.value = out
+	return nil
+}
+
+func (s *intSliceValue) GetSlice() []string {
+	out := make([]string, len(*s.value))
+	for i, d := range *s.value {
+		out[i] = strconv.Itoa(d)
+	}
+	return out
+}
+
 func intSliceConv(val string) (interface{}, error) {
 	val = strings.Trim(val, "[]")
 	// Empty string would cause a slice with one (empty) entry

vendor/github.com/spf13/pflag/ip_slice.go

@@ -72,9 +72,47 @@ func (s *ipSliceValue) String() string {
 	return "[" + out + "]"
 }
 
+func (s *ipSliceValue) fromString(val string) (net.IP, error) {
+	return net.ParseIP(strings.TrimSpace(val)), nil
+}
+
+func (s *ipSliceValue) toString(val net.IP) string {
+	return val.String()
+}
+
+func (s *ipSliceValue) Append(val string) error {
+	i, err := s.fromString(val)
+	if err != nil {
+		return err
+	}
+	*s.value = append(*s.value, i)
+	return nil
+}
+
+func (s *ipSliceValue) Replace(val []string) error {
+	out := make([]net.IP, len(val))
+	for i, d := range val {
+		var err error
+		out[i], err = s.fromString(d)
+		if err != nil {
+			return err
+		}
+	}
+	*s.value = out
+	return nil
+}
+
+func (s *ipSliceValue) GetSlice() []string {
+	out := make([]string, len(*s.value))
+	for i, d := range *s.value {
+		out[i] = s.toString(d)
+	}
+	return out
+}
+
 func ipSliceConv(val string) (interface{}, error) {
 	val = strings.Trim(val, "[]")
-	// Emtpy string would cause a slice with one (empty) entry
+	// Empty string would cause a slice with one (empty) entry
 	if len(val) == 0 {
 		return []net.IP{}, nil
 	}

vendor/github.com/spf13/pflag/string_array.go

@@ -23,6 +23,32 @@ func (s *stringArrayValue) Set(val string) error {
 	return nil
 }
 
+func (s *stringArrayValue) Append(val string) error {
+	*s.value = append(*s.value, val)
+	return nil
+}
+
+func (s *stringArrayValue) Replace(val []string) error {
+	out := make([]string, len(val))
+	for i, d := range val {
+		var err error
+		out[i] = d
+		if err != nil {
+			return err
+		}
+	}
+	*s.value = out
+	return nil
+}
+
+func (s *stringArrayValue) GetSlice() []string {
+	out := make([]string, len(*s.value))
+	for i, d := range *s.value {
+		out[i] = d
+	}
+	return out
+}
+
 func (s *stringArrayValue) Type() string {
 	return "stringArray"
 }

vendor/github.com/spf13/pflag/string_slice.go

@@ -62,6 +62,20 @@ func (s *stringSliceValue) String() string {
 	return "[" + str + "]"
 }
 
+func (s *stringSliceValue) Append(val string) error {
+	*s.value = append(*s.value, val)
+	return nil
+}
+
+func (s *stringSliceValue) Replace(val []string) error {
+	*s.value = val
+	return nil
+}
+
+func (s *stringSliceValue) GetSlice() []string {
+	return *s.value
+}
+
 func stringSliceConv(sval string) (interface{}, error) {
 	sval = sval[1 : len(sval)-1]
 	// An empty string would cause a slice with one (empty) string
@@ -84,7 +98,7 @@ func (f *FlagSet) GetStringSlice(name string) ([]string, error) {
 // The argument p points to a []string variable in which to store the value of the flag.
 // Compared to StringArray flags, StringSlice flags take comma-separated value as arguments and split them accordingly.
 // For example:
-//   --ss="v1,v2" -ss="v3"
+//   --ss="v1,v2" --ss="v3"
 // will result in
 //   []string{"v1", "v2", "v3"}
 func (f *FlagSet) StringSliceVar(p *[]string, name string, value []string, usage string) {
@@ -100,7 +114,7 @@ func (f *FlagSet) StringSliceVarP(p *[]string, name, shorthand string, value []s
 // The argument p points to a []string variable in which to store the value of the flag.
 // Compared to StringArray flags, StringSlice flags take comma-separated value as arguments and split them accordingly.
 // For example:
-//   --ss="v1,v2" -ss="v3"
+//   --ss="v1,v2" --ss="v3"
 // will result in
 //   []string{"v1", "v2", "v3"}
 func StringSliceVar(p *[]string, name string, value []string, usage string) {
@@ -116,7 +130,7 @@ func StringSliceVarP(p *[]string, name, shorthand string, value []string, usage
 // The return value is the address of a []string variable that stores the value of the flag.
 // Compared to StringArray flags, StringSlice flags take comma-separated value as arguments and split them accordingly.
 // For example:
-//   --ss="v1,v2" -ss="v3"
+//   --ss="v1,v2" --ss="v3"
 // will result in
 //   []string{"v1", "v2", "v3"}
 func (f *FlagSet) StringSlice(name string, value []string, usage string) *[]string {
@@ -136,7 +150,7 @@ func (f *FlagSet) StringSliceP(name, shorthand string, value []string, usage str
 // The return value is the address of a []string variable that stores the value of the flag.
 // Compared to StringArray flags, StringSlice flags take comma-separated value as arguments and split them accordingly.
 // For example:
-//   --ss="v1,v2" -ss="v3"
+//   --ss="v1,v2" --ss="v3"
 // will result in
 //   []string{"v1", "v2", "v3"}
 func StringSlice(name string, value []string, usage string) *[]string {

vendor/github.com/spf13/pflag/string_to_int64.go

@@ -0,0 +1,149 @@
+package pflag
+
+import (
+	"bytes"
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// -- stringToInt64 Value
+type stringToInt64Value struct {
+	value   *map[string]int64
+	changed bool
+}
+
+func newStringToInt64Value(val map[string]int64, p *map[string]int64) *stringToInt64Value {
+	ssv := new(stringToInt64Value)
+	ssv.value = p
+	*ssv.value = val
+	return ssv
+}
+
+// Format: a=1,b=2
+func (s *stringToInt64Value) Set(val string) error {
+	ss := strings.Split(val, ",")
+	out := make(map[string]int64, len(ss))
+	for _, pair := range ss {
+		kv := strings.SplitN(pair, "=", 2)
+		if len(kv) != 2 {
+			return fmt.Errorf("%s must be formatted as key=value", pair)
+		}
+		var err error
+		out[kv[0]], err = strconv.ParseInt(kv[1], 10, 64)
+		if err != nil {
+			return err
+		}
+	}
+	if !s.changed {
+		*s.value = out
+	} else {
+		for k, v := range out {
+			(*s.value)[k] = v
+		}
+	}
+	s.changed = true
+	return nil
+}
+
+func (s *stringToInt64Value) Type() string {
+	return "stringToInt64"
+}
+
+func (s *stringToInt64Value) String() string {
+	var buf bytes.Buffer
+	i := 0
+	for k, v := range *s.value {
+		if i > 0 {
+			buf.WriteRune(',')
+		}
+		buf.WriteString(k)
+		buf.WriteRune('=')
+		buf.WriteString(strconv.FormatInt(v, 10))
+		i++
+	}
+	return "[" + buf.String() + "]"
+}
+
+func stringToInt64Conv(val string) (interface{}, error) {
+	val = strings.Trim(val, "[]")
+	// An empty string would cause an empty map
+	if len(val) == 0 {
+		return map[string]int64{}, nil
+	}
+	ss := strings.Split(val, ",")
+	out := make(map[string]int64, len(ss))
+	for _, pair := range ss {
+		kv := strings.SplitN(pair, "=", 2)
+		if len(kv) != 2 {
+			return nil, fmt.Errorf("%s must be formatted as key=value", pair)
+		}
+		var err error
+		out[kv[0]], err = strconv.ParseInt(kv[1], 10, 64)
+		if err != nil {
+			return nil, err
+		}
+	}
+	return out, nil
+}
+
+// GetStringToInt64 return the map[string]int64 value of a flag with the given name
+func (f *FlagSet) GetStringToInt64(name string) (map[string]int64, error) {
+	val, err := f.getFlagType(name, "stringToInt64", stringToInt64Conv)
+	if err != nil {
+		return map[string]int64{}, err
+	}
+	return val.(map[string]int64), nil
+}
+
+// StringToInt64Var defines a string flag with specified name, default value, and usage string.
+// The argument p point64s to a map[string]int64 variable in which to store the values of the multiple flags.
+// The value of each argument will not try to be separated by comma
+func (f *FlagSet) StringToInt64Var(p *map[string]int64, name string, value map[string]int64, usage string) {
+	f.VarP(newStringToInt64Value(value, p), name, "", usage)
+}
+
+// StringToInt64VarP is like StringToInt64Var, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) StringToInt64VarP(p *map[string]int64, name, shorthand string, value map[string]int64, usage string) {
+	f.VarP(newStringToInt64Value(value, p), name, shorthand, usage)
+}
+
+// StringToInt64Var defines a string flag with specified name, default value, and usage string.
+// The argument p point64s to a map[string]int64 variable in which to store the value of the flag.
+// The value of each argument will not try to be separated by comma
+func StringToInt64Var(p *map[string]int64, name string, value map[string]int64, usage string) {
+	CommandLine.VarP(newStringToInt64Value(value, p), name, "", usage)
+}
+
+// StringToInt64VarP is like StringToInt64Var, but accepts a shorthand letter that can be used after a single dash.
+func StringToInt64VarP(p *map[string]int64, name, shorthand string, value map[string]int64, usage string) {
+	CommandLine.VarP(newStringToInt64Value(value, p), name, shorthand, usage)
+}
+
+// StringToInt64 defines a string flag with specified name, default value, and usage string.
+// The return value is the address of a map[string]int64 variable that stores the value of the flag.
+// The value of each argument will not try to be separated by comma
+func (f *FlagSet) StringToInt64(name string, value map[string]int64, usage string) *map[string]int64 {
+	p := map[string]int64{}
+	f.StringToInt64VarP(&p, name, "", value, usage)
+	return &p
+}
+
+// StringToInt64P is like StringToInt64, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) StringToInt64P(name, shorthand string, value map[string]int64, usage string) *map[string]int64 {
+	p := map[string]int64{}
+	f.StringToInt64VarP(&p, name, shorthand, value, usage)
+	return &p
+}
+
+// StringToInt64 defines a string flag with specified name, default value, and usage string.
+// The return value is the address of a map[string]int64 variable that stores the value of the flag.
+// The value of each argument will not try to be separated by comma
+func StringToInt64(name string, value map[string]int64, usage string) *map[string]int64 {
+	return CommandLine.StringToInt64P(name, "", value, usage)
+}
+
+// StringToInt64P is like StringToInt64, but accepts a shorthand letter that can be used after a single dash.
+func StringToInt64P(name, shorthand string, value map[string]int64, usage string) *map[string]int64 {
+	return CommandLine.StringToInt64P(name, shorthand, value, usage)
+}

vendor/github.com/spf13/pflag/uint_slice.go

@@ -50,6 +50,48 @@ func (s *uintSliceValue) String() string {
 	return "[" + strings.Join(out, ",") + "]"
 }
 
+func (s *uintSliceValue) fromString(val string) (uint, error) {
+	t, err := strconv.ParseUint(val, 10, 0)
+	if err != nil {
+		return 0, err
+	}
+	return uint(t), nil
+}
+
+func (s *uintSliceValue) toString(val uint) string {
+	return fmt.Sprintf("%d", val)
+}
+
+func (s *uintSliceValue) Append(val string) error {
+	i, err := s.fromString(val)
+	if err != nil {
+		return err
+	}
+	*s.value = append(*s.value, i)
+	return nil
+}
+
+func (s *uintSliceValue) Replace(val []string) error {
+	out := make([]uint, len(val))
+	for i, d := range val {
+		var err error
+		out[i], err = s.fromString(d)
+		if err != nil {
+			return err
+		}
+	}
+	*s.value = out
+	return nil
+}
+
+func (s *uintSliceValue) GetSlice() []string {
+	out := make([]string, len(*s.value))
+	for i, d := range *s.value {
+		out[i] = s.toString(d)
+	}
+	return out
+}
+
 func uintSliceConv(val string) (interface{}, error) {
 	val = strings.Trim(val, "[]")
 	// Empty string would cause a slice with one (empty) entry

vendor/modules.txt

@@ -141,7 +141,6 @@ github.com/gogo/protobuf/proto
 github.com/gogo/protobuf/sortkeys
 github.com/gogo/protobuf/types
 # github.com/golang/protobuf v1.3.1
-## explicit
 github.com/golang/protobuf/proto
 github.com/golang/protobuf/ptypes
 github.com/golang/protobuf/ptypes/any
@@ -186,10 +185,11 @@ github.com/pkg/errors
 ## explicit
 github.com/sirupsen/logrus
 github.com/sirupsen/logrus/hooks/writer
-# github.com/spf13/cobra v0.0.5
+# github.com/spf13/cobra v1.0.0
 ## explicit
 github.com/spf13/cobra
-# github.com/spf13/pflag v1.0.3
+# github.com/spf13/pflag v1.0.5
+## explicit
 github.com/spf13/pflag
 # github.com/syndtr/gocapability v0.0.0-20180916011248-d98352740cb2
 ## explicit
@@ -209,6 +209,7 @@ golang.org/x/net/internal/timeseries
 golang.org/x/net/proxy
 golang.org/x/net/trace
 # golang.org/x/sync v0.0.0-20190423024810-112230192c58
+## explicit
 golang.org/x/sync/errgroup
 golang.org/x/sync/semaphore
 # golang.org/x/sys v0.0.0-20190902133755-9109b7679e13
@@ -221,8 +222,6 @@ golang.org/x/text/secure/bidirule
 golang.org/x/text/transform
 golang.org/x/text/unicode/bidi
 golang.org/x/text/unicode/norm
-# golang.org/x/time v0.0.0-20190308202827-9d24e82272b4
-## explicit
 # google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8
 google.golang.org/genproto/googleapis/rpc/status
 # google.golang.org/grpc v1.23.0