improve linter quality for external-dns

.golangci.yml

@@ -1,23 +1,81 @@
-run:
-  concurrency: 4
-
-  modules-download-mode: readonly
-
 linters-settings:
+  exhaustive:
+    default-signifies-exhaustive: false
+  goimports:
+    local-prefixes: github.com/kubernetes-sigs/external-dns
   golint:
-      min-confidence: 0.9
+    min-confidence: 0.9
-
+  maligned:
-  gocyclo:
+    suggest-new: true
-      min-complexity: 15
+  misspell:
+    locale: US
 
 linters:
+  # please, do not use `enable-all`: it's deprecated and will be removed soon.
+  # inverted configuration with `enable-all` and `disable` is not scalable during updates of golangci-lint
   disable-all: true
   enable:
+    - deadcode
+    - depguard
+    - dogsled
+    - gofmt
+    - goimports
+    - golint
+    - goprintffuncname
+    - gosimple
     - govet
     - ineffassign
-    - golint
-    - goimports
-    - misspell
-    - unconvert
-    - megacheck
     - interfacer
+    - misspell
+    - rowserrcheck
+    - staticcheck
+    - structcheck
+    - stylecheck
+    - typecheck
+    - unconvert
+    - unused
+    - varcheck
+    - whitespace
+
+issues:
+  # Excluding configuration per-path, per-linter, per-text and per-source
+  exclude-rules:
+    - path: _test\.go
+      linters:
+        - deadcode
+        - depguard
+        - dogsled
+        - gofmt
+        - goimports
+        - golint
+        - goprintffuncname
+        - gosimple
+        - govet
+        - ineffassign
+        - interfacer
+        - misspell
+        - nolintlint
+        - rowserrcheck
+        - staticcheck
+        - structcheck
+        - stylecheck
+        - typecheck
+        - unconvert
+        - unused
+        - varcheck
+        - whitespace
+
+
+#run:
+#  skip-dirs:
+#    - test/testdata_etc
+#    - internal/cache
+#    - internal/renameio
+#    - internal/robustio
+
+# golangci.com configuration
+# https://github.com/golangci/golangci/wiki/Configuration
+#service:
+#  golangci-lint-version: 1.23.x # use the fixed version to not introduce new linters unexpectedly
+#  prepare:
+#    - echo "here I can run custom commands, but no preparation needed for this repo"

Makefile

@@ -31,7 +31,7 @@ cover-html: cover
 
 # Run all the linters
 lint:
-	golangci-lint run --timeout=5m ./...
+	golangci-lint run --timeout=15m ./...
 
 
 # The verify target runs tasks similar to the CI tasks, but without code coverage

controller/controller.go

@@ -160,14 +160,14 @@ func (c *Controller) RunOnce(ctx context.Context) error {
 	return nil
 }
 
-// MIN_INTERVAL is used as window for batching events
+// MinInterval is used as window for batching events
-const MIN_INTERVAL = 5 * time.Second
+const MinInterval = 5 * time.Second
 
 // RunOnceThrottled makes sure execution happens at most once per interval.
 func (c *Controller) ScheduleRunOnce(now time.Time) {
 	c.nextRunAtMux.Lock()
 	defer c.nextRunAtMux.Unlock()
-	c.nextRunAt = now.Add(MIN_INTERVAL)
+	c.nextRunAt = now.Add(MinInterval)
 }
 
 func (c *Controller) ShouldRunOnce(now time.Time) bool {
@@ -180,7 +180,7 @@ func (c *Controller) ShouldRunOnce(now time.Time) bool {
 	return true
 }
 
-// Run runs RunOnce in a loop with a delay until context is cancelled
+// Run runs RunOnce in a loop with a delay until context is canceled
 func (c *Controller) Run(ctx context.Context) {
 	ticker := time.NewTicker(time.Second)
 	defer ticker.Stop()

controller/controller_test.go

@@ -174,8 +174,8 @@ func TestShouldRunOnce(t *testing.T) {
 	assert.False(t, ctrl.ShouldRunOnce(now))
 	assert.False(t, ctrl.ShouldRunOnce(now.Add(100*time.Microsecond)))
 
-	// But after MIN_INTERVAL we should run reconciliation
+	// But after MinInterval we should run reconciliation
-	now = now.Add(MIN_INTERVAL)
+	now = now.Add(MinInterval)
 	assert.True(t, ctrl.ShouldRunOnce(now))
 
 	// But just one time

internal/config/config.go

@@ -1,4 +1,4 @@
 package config
 
-// FAST_POLL used for fast testing
+// FastPoll used for fast testing
-var FAST_POLL = false
+var FastPoll = false

internal/testutils/endpoint.go

@@ -39,7 +39,6 @@ func (b byAllFields) Less(i, j int) bool {
 			return b[i].RecordType <= b[j].RecordType
 		}
 		return b[i].Targets.String() <= b[j].Targets.String()
-
 	}
 	return false
 }

internal/testutils/init.go

@@ -11,7 +11,7 @@ import (
 )
 
 func init() {
-	config.FAST_POLL = true
+	config.FastPoll = true
 	if os.Getenv("DEBUG") == "" {
 		logrus.SetOutput(ioutil.Discard)
 		log.SetOutput(ioutil.Discard)

provider/akamai/akamai.go

@@ -293,7 +293,6 @@ func (p *AkamaiProvider) newAkamaiRecord(dnsName, recordType string, targets ...
 
 func (p *AkamaiProvider) createRecords(zoneNameIDMapper provider.ZoneIDName, endpoints []*endpoint.Endpoint) (created []*endpoint.Endpoint, failed []*endpoint.Endpoint) {
 	for _, endpoint := range endpoints {
-
 		if !p.domainFilter.Match(endpoint.DNSName) {
 			log.Debugf("Skipping creation at Akamai of endpoint DNSName: '%s' RecordType: '%s', it does not match against Domain filters", endpoint.DNSName, endpoint.RecordType)
 			continue
@@ -324,7 +323,6 @@ func (p *AkamaiProvider) createRecords(zoneNameIDMapper provider.ZoneIDName, end
 
 func (p *AkamaiProvider) deleteRecords(zoneNameIDMapper provider.ZoneIDName, endpoints []*endpoint.Endpoint) (deleted []*endpoint.Endpoint, failed []*endpoint.Endpoint) {
 	for _, endpoint := range endpoints {
-
 		if !p.domainFilter.Match(endpoint.DNSName) {
 			log.Debugf("Skipping deletion at Akamai of endpoint: '%s' type: '%s', it does not match against Domain filters", endpoint.DNSName, endpoint.RecordType)
 			continue
@@ -353,7 +351,6 @@ func (p *AkamaiProvider) deleteRecords(zoneNameIDMapper provider.ZoneIDName, end
 
 func (p *AkamaiProvider) updateNewRecords(zoneNameIDMapper provider.ZoneIDName, endpoints []*endpoint.Endpoint) (updated []*endpoint.Endpoint, failed []*endpoint.Endpoint) {
 	for _, endpoint := range endpoints {
-
 		if !p.domainFilter.Match(endpoint.DNSName) {
 			log.Debugf("Skipping update at Akamai of endpoint DNSName: '%s' RecordType: '%s', it does not match against Domain filters", endpoint.DNSName, endpoint.RecordType)
 			continue

provider/alibabacloud/alibaba_cloud.go

@@ -100,17 +100,17 @@ func NewAlibabaCloudProvider(configFile string, domainFilter endpoint.DomainFilt
 	if configFile != "" {
 		contents, err := ioutil.ReadFile(configFile)
 		if err != nil {
-			return nil, fmt.Errorf("Failed to read Alibaba Cloud config file '%s': %v", configFile, err)
+			return nil, fmt.Errorf("failed to read Alibaba Cloud config file '%s': %v", configFile, err)
 		}
 		err = yaml.Unmarshal(contents, &cfg)
 		if err != nil {
-			return nil, fmt.Errorf("Failed to parse Alibaba Cloud config file '%s': %v", configFile, err)
+			return nil, fmt.Errorf("failed to parse Alibaba Cloud config file '%s': %v", configFile, err)
 		}
 	} else {
 		var tmpError error
 		cfg, tmpError = getCloudConfigFromStsToken()
 		if tmpError != nil {
-			return nil, fmt.Errorf("Failed to getCloudConfigFromStsToken: %v", tmpError)
+			return nil, fmt.Errorf("failed to getCloudConfigFromStsToken: %v", tmpError)
 		}
 	}
 
@@ -182,19 +182,19 @@ func getCloudConfigFromStsToken() (alibabaCloudConfig, error) {
 	roleName := ""
 	var err error
 	if roleName, err = m.RoleName(); err != nil {
-		return cfg, fmt.Errorf("Failed to get role name from Metadata Service: %v", err)
+		return cfg, fmt.Errorf("failed to get role name from Metadata Service: %v", err)
 	}
 	vpcID, err := m.VpcID()
 	if err != nil {
-		return cfg, fmt.Errorf("Failed to get VPC ID from Metadata Service: %v", err)
+		return cfg, fmt.Errorf("failed to get VPC ID from Metadata Service: %v", err)
 	}
 	regionID, err := m.Region()
 	if err != nil {
-		return cfg, fmt.Errorf("Failed to get Region ID from Metadata Service: %v", err)
+		return cfg, fmt.Errorf("failed to get Region ID from Metadata Service: %v", err)
 	}
 	role, err := m.RamRoleToken(roleName)
 	if err != nil {
-		return cfg, fmt.Errorf("Failed to get STS Token from Metadata Service: %v", err)
+		return cfg, fmt.Errorf("failed to get STS Token from Metadata Service: %v", err)
 	}
 	cfg.RegionID = regionID
 	cfg.RoleName = roleName
@@ -317,7 +317,6 @@ func (p *AlibabaCloudProvider) getDNSName(rr, domain string) string {
 //
 // Returns the current records or an error if the operation failed.
 func (p *AlibabaCloudProvider) recordsForDNS() (endpoints []*endpoint.Endpoint, _ error) {
-
 	records, err := p.records()
 	if err != nil {
 		return nil, err
@@ -346,7 +345,6 @@ func (p *AlibabaCloudProvider) recordsForDNS() (endpoints []*endpoint.Endpoint,
 }
 
 func getNextPageNumber(pageNumber, pageSize, totalCount int) int {
-
 	if pageNumber*pageSize >= totalCount {
 		return 0
 	}
@@ -365,18 +363,13 @@ func (p *AlibabaCloudProvider) getRecordKeyByEndpoint(endpoint *endpoint.Endpoin
 }
 
 func (p *AlibabaCloudProvider) groupRecords(records []alidns.Record) (endpointMap map[string][]alidns.Record) {
-
 	endpointMap = make(map[string][]alidns.Record)
-
 	for _, record := range records {
-
 		key := p.getRecordKey(record)
 
 		recordList := endpointMap[key]
 		endpointMap[key] = append(recordList, record)
-
 	}
-
 	return endpointMap
 }
 
@@ -451,18 +444,15 @@ func (p *AlibabaCloudProvider) getDomainRecords(domainName string) ([]alidns.Rec
 		}
 
 		for _, record := range response.DomainRecords.Record {
-
 			domainName := record.DomainName
 			recordType := record.Type
 
 			if !p.domainFilter.Match(domainName) {
 				continue
 			}
-
 			if !provider.SupportedRecordType(recordType) {
 				continue
 			}
-
 			//TODO filter Locked record
 			results = append(results, record)
 		}
@@ -624,7 +614,6 @@ func (p *AlibabaCloudProvider) equals(record alidns.Record, endpoint *endpoint.E
 }
 
 func (p *AlibabaCloudProvider) updateRecords(recordMap map[string][]alidns.Record, endpoints []*endpoint.Endpoint) error {
-
 	for _, endpoint := range endpoints {
 		key := p.getRecordKeyByEndpoint(endpoint)
 		records := recordMap[key]
@@ -669,7 +658,6 @@ func (p *AlibabaCloudProvider) updateRecords(recordMap map[string][]alidns.Recor
 }
 
 func (p *AlibabaCloudProvider) splitDNSName(endpoint *endpoint.Endpoint) (rr string, domain string) {
-
 	name := strings.TrimSuffix(endpoint.DNSName, ".")
 
 	found := false
@@ -729,7 +717,6 @@ func (p *AlibabaCloudProvider) matchVPC(zoneID string) bool {
 }
 
 func (p *AlibabaCloudProvider) privateZones() ([]pvtz.Zone, error) {
-
 	var zones []pvtz.Zone
 
 	request := pvtz.CreateDescribeZonesRequest()
@@ -784,7 +771,6 @@ func (p *AlibabaCloudProvider) getPrivateZones() (map[string]*alibabaPrivateZone
 	}
 
 	for _, zone := range zones {
-
 		request := pvtz.CreateDescribeZoneRecordsRequest()
 		request.ZoneId = zone.ZoneId
 		request.PageSize = requests.NewInteger(defaultAlibabaCloudPageSize)
@@ -801,7 +787,6 @@ func (p *AlibabaCloudProvider) getPrivateZones() (map[string]*alibabaPrivateZone
 			}
 
 			for _, record := range response.Records.Record {
-
 				recordType := record.Type
 
 				if !provider.SupportedRecordType(recordType) {
@@ -831,7 +816,6 @@ func (p *AlibabaCloudProvider) getPrivateZones() (map[string]*alibabaPrivateZone
 }
 
 func (p *AlibabaCloudProvider) groupPrivateZoneRecords(zone *alibabaPrivateZone) (endpointMap map[string][]pvtz.Record) {
-
 	endpointMap = make(map[string][]pvtz.Record)
 
 	for _, record := range zone.records {
@@ -847,7 +831,6 @@ func (p *AlibabaCloudProvider) groupPrivateZoneRecords(zone *alibabaPrivateZone)
 //
 // Returns the current records or an error if the operation failed.
 func (p *AlibabaCloudProvider) privateZoneRecords() (endpoints []*endpoint.Endpoint, _ error) {
-
 	zones, err := p.getPrivateZones()
 	if err != nil {
 		return nil, err
@@ -881,7 +864,7 @@ func (p *AlibabaCloudProvider) createPrivateZoneRecord(zones map[string]*alibaba
 	rr, domain := p.splitDNSName(endpoint)
 	zone := zones[domain]
 	if zone == nil {
-		err := fmt.Errorf("Failed to find private zone '%s'", domain)
+		err := fmt.Errorf("failed to find private zone '%s'", domain)
 		log.Errorf("Failed to create %s record named '%s' to '%s' for Alibaba Cloud Private Zone: %v", endpoint.RecordType, endpoint.DNSName, target, err)
 		return err
 	}
@@ -912,7 +895,7 @@ func (p *AlibabaCloudProvider) createPrivateZoneRecord(zones map[string]*alibaba
 	if err == nil {
 		log.Infof("Create %s record named '%s' to '%s' with ttl %d for Alibaba Cloud Private Zone: Record ID=%d", endpoint.RecordType, endpoint.DNSName, target, ttl, response.RecordId)
 	} else {
-		log.Errorf("Failed to create %s record named '%s' to '%s' with ttl %d for Alibaba Cloud Private Zone: %v", endpoint.RecordType, endpoint.DNSName, target, ttl, err)
+		log.Errorf("failed to create %s record named '%s' to '%s' with ttl %d for Alibaba Cloud Private Zone: %v", endpoint.RecordType, endpoint.DNSName, target, ttl, err)
 	}
 	return err
 }
@@ -927,7 +910,6 @@ func (p *AlibabaCloudProvider) createPrivateZoneRecords(zones map[string]*alibab
 }
 
 func (p *AlibabaCloudProvider) deletePrivateZoneRecord(recordID int) error {
-
 	if p.dryRun {
 		log.Infof("Dry run: Delete record id '%d' in Alibaba Cloud Private Zone", recordID)
 	}
@@ -951,7 +933,7 @@ func (p *AlibabaCloudProvider) deletePrivateZoneRecords(zones map[string]*alibab
 
 		zone := zones[domain]
 		if zone == nil {
-			err := fmt.Errorf("Failed to find private zone '%s'", domain)
+			err := fmt.Errorf("failed to find private zone '%s'", domain)
 			log.Errorf("Failed to delete %s record named '%s' for Alibaba Cloud Private Zone: %v", endpoint.RecordType, endpoint.DNSName, err)
 			continue
 		}
@@ -1035,12 +1017,11 @@ func (p *AlibabaCloudProvider) equalsPrivateZone(record pvtz.Record, endpoint *e
 }
 
 func (p *AlibabaCloudProvider) updatePrivateZoneRecords(zones map[string]*alibabaPrivateZone, endpoints []*endpoint.Endpoint) error {
-
 	for _, endpoint := range endpoints {
 		rr, domain := p.splitDNSName(endpoint)
 		zone := zones[domain]
 		if zone == nil {
-			err := fmt.Errorf("Failed to find private zone '%s'", domain)
+			err := fmt.Errorf("failed to find private zone '%s'", domain)
 			log.Errorf("Failed to update %s record named '%s' for Alibaba Cloud Private Zone: %v", endpoint.RecordType, endpoint.DNSName, err)
 			continue
 		}

provider/aws/aws.go

@@ -433,7 +433,7 @@ func (p *AWSProvider) submitChanges(ctx context.Context, changes []*route53.Chan
 				}
 
 				if _, err := p.client.ChangeResourceRecordSetsWithContext(ctx, params); err != nil {
-					log.Errorf("Failure in zone %s [Id: %s]", aws.StringValue(zones[z].Name), z)
+					log.Errorf("failure in zone %s [Id: %s]", aws.StringValue(zones[z].Name), z)
 					log.Error(err) //TODO(ideahitme): consider changing the interface in cases when this error might be a concern for other components
 					failedUpdate = true
 				} else {
@@ -453,7 +453,7 @@ func (p *AWSProvider) submitChanges(ctx context.Context, changes []*route53.Chan
 	}
 
 	if len(failedZones) > 0 {
-		return fmt.Errorf("Failed to submit all changes for the following zones: %v", failedZones)
+		return fmt.Errorf("failed to submit all changes for the following zones: %v", failedZones)
 	}
 
 	return nil
@@ -737,7 +737,6 @@ func isAWSAlias(ep *endpoint.Endpoint, addrs []*endpoint.Endpoint) string {
 				if hostedZone := canonicalHostedZone(addr.Targets[0]); hostedZone != "" {
 					return hostedZone
 				}
-
 			}
 		}
 	}

provider/coredns/coredns.go

@@ -86,7 +86,7 @@ type Service struct {
 	// answer.
 	Group string `json:"group,omitempty"`
 
-	// Etcd key where we found this service and ignored from json un-/marshalling
+	// Etcd key where we found this service and ignored from json un-/marshaling
 	Key string `json:"-"`
 }
 
@@ -397,7 +397,6 @@ func (p coreDNSProvider) ApplyChanges(ctx context.Context, changes *plan.Changes
 					}
 				}
 			}
-
 		}
 		index := 0
 		for _, ep := range group {

provider/digitalocean/digital_ocean.go

@@ -62,7 +62,7 @@ type DigitalOceanChange struct {
 func NewDigitalOceanProvider(ctx context.Context, domainFilter endpoint.DomainFilter, dryRun bool) (*DigitalOceanProvider, error) {
 	token, ok := os.LookupEnv("DO_TOKEN")
 	if !ok {
-		return nil, fmt.Errorf("No token found")
+		return nil, fmt.Errorf("no token found")
 	}
 	oauthClient := oauth2.NewClient(ctx, oauth2.StaticTokenSource(&oauth2.Token{
 		AccessToken: token,

provider/dnsimple/dnsimple.go

@@ -101,7 +101,7 @@ const (
 func NewDnsimpleProvider(domainFilter endpoint.DomainFilter, zoneIDFilter provider.ZoneIDFilter, dryRun bool) (provider.Provider, error) {
 	oauthToken := os.Getenv("DNSIMPLE_OAUTH")
 	if len(oauthToken) == 0 {
-		return nil, fmt.Errorf("No dnsimple oauth token provided")
+		return nil, fmt.Errorf("no dnsimple oauth token provided")
 	}
 
 	ts := oauth2.StaticTokenSource(&oauth2.Token{AccessToken: oauthToken})
@@ -319,7 +319,7 @@ func (p *dnsimpleProvider) GetRecordID(ctx context.Context, zone string, recordN
 			break
 		}
 	}
-	return 0, fmt.Errorf("No record id found")
+	return 0, fmt.Errorf("no record id found")
 }
 
 // dnsimpleSuitableZone returns the most suitable zone for a given hostname and a set of zones.

provider/dyn/dyn.go

@@ -158,7 +158,6 @@ func NewDynProvider(config DynConfig) (provider.Provider, error) {
 func filterAndFixLinks(links []string, filter endpoint.DomainFilter) []string {
 	var result []string
 	for _, link := range links {
-
 		// link looks like /REST/CNAMERecord/acme.com/exchange.acme.com/349386875
 
 		// strip /REST/
@@ -292,7 +291,6 @@ func (d *dynProviderState) allRecordsToEndpoints(records *dynectsoap.GetAllRecor
 	}
 
 	return result
-
 }
 
 func errorOrValue(err error, value interface{}) interface{} {
@@ -394,7 +392,6 @@ func (d *dynProviderState) fetchAllRecordsInZone(zone string) (*dynectsoap.GetAl
 	}
 
 	return &records, nil
-
 }
 
 // buildLinkToRecord build a resource link. The symmetry of the dyn API is used to save
@@ -570,7 +567,7 @@ func (d *dynProviderState) commit(client *dynect.Client) error {
 	case 1:
 		return errs[0]
 	default:
-		return fmt.Errorf("Multiple errors committing: %+v", errs)
+		return fmt.Errorf("multiple errors committing: %+v", errs)
 	}
 }
 
@@ -681,7 +678,7 @@ func (d *dynProviderState) ApplyChanges(ctx context.Context, changes *plan.Chang
 	case 1:
 		return errs[0]
 	default:
-		return fmt.Errorf("Multiple errors committing: %+v", errs)
+		return fmt.Errorf("multiple errors committing: %+v", errs)
 	}
 
 	if needsCommit {

provider/linode/linode.go

@@ -447,7 +447,6 @@ func (p *LinodeProvider) ApplyChanges(ctx context.Context, changes *plan.Changes
 					DomainRecord: record,
 				})
 			}
-
 		}
 	}
 

provider/ns1/ns1.go

@@ -152,7 +152,6 @@ func (p *NS1Provider) Records(ctx context.Context) ([]*endpoint.Endpoint, error)
 	var endpoints []*endpoint.Endpoint
 
 	for _, zone := range zones {
-
 		// TODO handle Header Codes
 		zoneData, _, err := p.client.GetZone(zone.String())
 		if err != nil {

provider/oci/oci.go

@@ -84,7 +84,7 @@ func LoadOCIConfig(path string) (*OCIConfig, error) {
 	return &cfg, nil
 }
 
-// NewOCIProvider initialises a new OCI DNS based Provider.
+// NewOCIProvider initializes a new OCI DNS based Provider.
 func NewOCIProvider(cfg OCIConfig, domainFilter endpoint.DomainFilter, zoneIDFilter provider.ZoneIDFilter, dryRun bool) (*OCIProvider, error) {
 	var client ociDNSClient
 	client, err := dns.NewDnsClientWithConfigurationProvider(common.NewRawConfigurationProvider(
@@ -96,7 +96,7 @@ func NewOCIProvider(cfg OCIConfig, domainFilter endpoint.DomainFilter, zoneIDFil
 		&cfg.Auth.Passphrase,
 	))
 	if err != nil {
-		return nil, errors.Wrap(err, "initialising OCI DNS API client")
+		return nil, errors.Wrap(err, "initializing OCI DNS API client")
 	}
 
 	return &OCIProvider{

provider/ovh/ovh.go

@@ -97,7 +97,6 @@ func NewOVHProvider(ctx context.Context, domainFilter endpoint.DomainFilter, end
 
 // Records returns the list of records in all relevant zones.
 func (p *OVHProvider) Records(ctx context.Context) ([]*endpoint.Endpoint, error) {
-
 	_, records, err := p.zonesRecords(ctx)
 	if err != nil {
 		return nil, err

provider/pdns/pdns.go

@@ -117,7 +117,6 @@ func (tlsConfig *TLSConfig) setHTTPClient(pdnsClientConfig *pgo.Configuration) e
 
 // Function for debug printing
 func stringifyHTTPResponseBody(r *http.Response) (body string) {
-
 	if r == nil {
 		return ""
 	}
@@ -126,7 +125,6 @@ func stringifyHTTPResponseBody(r *http.Response) (body string) {
 	buf.ReadFrom(r.Body)
 	body = buf.String()
 	return body
-
 }
 
 // PDNSAPIProvider : Interface used and extended by the PDNSAPIClient struct as
@@ -162,7 +160,6 @@ func (c *PDNSAPIClient) ListZones() (zones []pgo.Zone, resp *http.Response, err
 
 	log.Errorf("Unable to fetch zones. %v", err)
 	return zones, resp, err
-
 }
 
 // PartitionZones : Method returns a slice of zones that adhere to the domain filter and a slice of ones that does not adhere to the filter
@@ -191,14 +188,12 @@ func (c *PDNSAPIClient) ListZone(zoneID string) (zone pgo.Zone, resp *http.Respo
 			log.Debugf("Retrying ListZone() ... %d", i)
 			time.Sleep(retryAfterTime * (1 << uint(i)))
 			continue
-
 		}
 		return zone, resp, err
 	}
 
 	log.Errorf("Unable to list zone. %v", err)
 	return zone, resp, err
-
 }
 
 // PatchZone : Method used to update the contents of a particular zone from PowerDNS
@@ -211,7 +206,6 @@ func (c *PDNSAPIClient) PatchZone(zoneID string, zoneStruct pgo.Zone) (resp *htt
 			log.Debugf("Retrying PatchZone() ... %d", i)
 			time.Sleep(retryAfterTime * (1 << uint(i)))
 			continue
-
 		}
 		return resp, err
 	}
@@ -228,11 +222,10 @@ type PDNSProvider struct {
 
 // NewPDNSProvider initializes a new PowerDNS based Provider.
 func NewPDNSProvider(ctx context.Context, config PDNSConfig) (*PDNSProvider, error) {
-
 	// Do some input validation
 
 	if config.APIKey == "" {
-		return nil, errors.New("Missing API Key for PDNS. Specify using --pdns-api-key=")
+		return nil, errors.New("missing API Key for PDNS. Specify using --pdns-api-key=")
 	}
 
 	// We do not support dry running, exit safely instead of surprising the user
@@ -259,7 +252,6 @@ func NewPDNSProvider(ctx context.Context, config PDNSConfig) (*PDNSProvider, err
 			domainFilter: config.DomainFilter,
 		},
 	}
-
 	return provider, nil
 }
 
@@ -272,13 +264,11 @@ func (p *PDNSProvider) convertRRSetToEndpoints(rr pgo.RrSet) (endpoints []*endpo
 			endpoints = append(endpoints, endpoint.NewEndpointWithTTL(rr.Name, rr.Type_, endpoint.TTL(rr.Ttl), record.Content))
 		}
 	}
-
 	return endpoints, nil
 }
 
 // ConvertEndpointsToZones marshals endpoints into pdns compatible Zone structs
 func (p *PDNSProvider) ConvertEndpointsToZones(eps []*endpoint.Endpoint, changetype pdnsChangeType) (zonelist []pgo.Zone, _ error) {
-
 	zonelist = []pgo.Zone{}
 	endpoints := make([]*endpoint.Endpoint, len(eps))
 	copy(endpoints, eps)
@@ -319,7 +309,7 @@ func (p *PDNSProvider) ConvertEndpointsToZones(eps []*endpoint.Endpoint, changet
 				// external-dns v5.0.0-alpha onwards
 				records := []pgo.Record{}
 				for _, t := range ep.Targets {
-					if "CNAME" == ep.RecordType {
+					if ep.RecordType == "CNAME" {
 						t = provider.EnsureTrailingDot(t)
 					}
 
@@ -335,7 +325,7 @@ func (p *PDNSProvider) ConvertEndpointsToZones(eps []*endpoint.Endpoint, changet
 				// DELETEs explicitly forbid a TTL, therefore only PATCHes need the TTL
 				if changetype == PdnsReplace {
 					if int64(ep.RecordTTL) > int64(math.MaxInt32) {
-						return nil, errors.New("Value of record TTL overflows, limited to int32")
+						return nil, errors.New("value of record TTL overflows, limited to int32")
 					}
 					if ep.RecordTTL == 0 {
 						// No TTL was specified for the record, we use the default
@@ -353,13 +343,10 @@ func (p *PDNSProvider) ConvertEndpointsToZones(eps []*endpoint.Endpoint, changet
 				// If we didn't pop anything, we move to the next item in the list
 				i++
 			}
-
 		}
-
 		if len(zone.Rrsets) > 0 {
 			zonelist = append(zonelist, zone)
 		}
-
 	}
 
 	// residualZones is unsorted by name length like its counterpart
@@ -377,7 +364,6 @@ func (p *PDNSProvider) ConvertEndpointsToZones(eps []*endpoint.Endpoint, changet
 			}
 		}
 	}
-
 	// If we still have some endpoints left, it means we couldn't find a matching zone (filtered or residual) for them
 	// We warn instead of hard fail here because we don't want a misconfig to cause everything to go down
 	if len(endpoints) > 0 {
@@ -402,20 +388,17 @@ func (p *PDNSProvider) mutateRecords(endpoints []*endpoint.Endpoint, changetype
 		} else {
 			log.Debugf("Struct for PatchZone:\n%s", string(jso))
 		}
-
 		resp, err := p.client.PatchZone(zone.Id, zone)
 		if err != nil {
 			log.Debugf("PDNS API response: %s", stringifyHTTPResponseBody(resp))
 			return err
 		}
-
 	}
 	return nil
 }
 
 // Records returns all DNS records controlled by the configured PDNS server (for all zones)
 func (p *PDNSProvider) Records(ctx context.Context) (endpoints []*endpoint.Endpoint, _ error) {
-
 	zones, _, err := p.client.ListZones()
 	if err != nil {
 		return nil, err
@@ -445,7 +428,6 @@ func (p *PDNSProvider) Records(ctx context.Context) (endpoints []*endpoint.Endpo
 // ApplyChanges takes a list of changes (endpoints) and updates the PDNS server
 // by sending the correct HTTP PATCH requests to a matching zone
 func (p *PDNSProvider) ApplyChanges(ctx context.Context, changes *plan.Changes) error {
-
 	startTime := time.Now()
 
 	// Create
@@ -493,7 +475,6 @@ func (p *PDNSProvider) ApplyChanges(ctx context.Context, changes *plan.Changes)
 			return err
 		}
 	}
-
 	log.Debugf("Changes pushed out to PowerDNS in %s\n", time.Since(startTime))
 	return nil
 }

provider/rcode0/rcode0.go

@@ -46,7 +46,6 @@ type RcodeZeroProvider struct {
 //
 // Returns the provider or an error if a provider could not be created.
 func NewRcodeZeroProvider(domainFilter endpoint.DomainFilter, dryRun bool, txtEnc bool) (*RcodeZeroProvider, error) {
-
 	client, err := rc0.NewClient(os.Getenv("RC0_API_KEY"))
 
 	if err != nil {
@@ -78,7 +77,6 @@ func NewRcodeZeroProvider(domainFilter endpoint.DomainFilter, dryRun bool, txtEn
 
 // Zones returns filtered zones if filter is set
 func (p *RcodeZeroProvider) Zones() ([]*rc0.Zone, error) {
-
 	var result []*rc0.Zone
 
 	zones, err := p.fetchZones()
@@ -99,7 +97,6 @@ func (p *RcodeZeroProvider) Zones() ([]*rc0.Zone, error) {
 //
 // Decrypts TXT records if TXT-Encrypt flag is set and key is provided
 func (p *RcodeZeroProvider) Records(ctx context.Context) ([]*endpoint.Endpoint, error) {
-
 	zones, err := p.Zones()
 	if err != nil {
 		return nil, err
@@ -108,7 +105,6 @@ func (p *RcodeZeroProvider) Records(ctx context.Context) ([]*endpoint.Endpoint,
 	var endpoints []*endpoint.Endpoint
 
 	for _, zone := range zones {
-
 		rrset, err := p.fetchRecords(zone.Domain)
 
 		if err != nil {
@@ -116,25 +112,19 @@ func (p *RcodeZeroProvider) Records(ctx context.Context) ([]*endpoint.Endpoint,
 		}
 
 		for _, r := range rrset {
-
 			if provider.SupportedRecordType(r.Type) {
-
 				if p.TXTEncrypt && (p.Key != nil) && strings.EqualFold(r.Type, "TXT") {
 					p.Client.RRSet.DecryptTXT(p.Key, r)
 				}
-
 				if len(r.Records) > 1 {
-
 					for _, _r := range r.Records {
 						if !_r.Disabled {
 							endpoints = append(endpoints, endpoint.NewEndpointWithTTL(r.Name, r.Type, endpoint.TTL(r.TTL), _r.Content))
 						}
 					}
-
 				} else if !r.Records[0].Disabled {
 					endpoints = append(endpoints, endpoint.NewEndpointWithTTL(r.Name, r.Type, endpoint.TTL(r.TTL), r.Records[0].Content))
 				}
-
 			}
 		}
 	}
@@ -144,7 +134,6 @@ func (p *RcodeZeroProvider) Records(ctx context.Context) ([]*endpoint.Endpoint,
 
 // ApplyChanges applies a given set of changes in a given zone.
 func (p *RcodeZeroProvider) ApplyChanges(ctx context.Context, changes *plan.Changes) error {
-
 	combinedChanges := make([]*rc0.RRSetChange, 0, len(changes.Create)+len(changes.UpdateNew)+len(changes.Delete))
 
 	combinedChanges = append(combinedChanges, p.NewRcodezeroChanges(rc0.ChangeTypeADD, changes.Create)...)
@@ -156,7 +145,6 @@ func (p *RcodeZeroProvider) ApplyChanges(ctx context.Context, changes *plan.Chan
 
 // Helper function
 func rcodezeroChangesByZone(zones []*rc0.Zone, changeSet []*rc0.RRSetChange) map[string][]*rc0.RRSetChange {
-
 	changes := make(map[string][]*rc0.RRSetChange)
 	zoneNameIDMapper := provider.ZoneIDName{}
 	for _, z := range zones {
@@ -178,7 +166,6 @@ func rcodezeroChangesByZone(zones []*rc0.Zone, changeSet []*rc0.RRSetChange) map
 
 // Helper function
 func (p *RcodeZeroProvider) fetchRecords(zoneName string) ([]*rc0.RRType, error) {
-
 	var allRecords []*rc0.RRType
 
 	listOptions := rc0.NewListOptions()
@@ -204,7 +191,6 @@ func (p *RcodeZeroProvider) fetchRecords(zoneName string) ([]*rc0.RRType, error)
 
 // Helper function
 func (p *RcodeZeroProvider) fetchZones() ([]*rc0.Zone, error) {
-
 	var allZones []*rc0.Zone
 
 	listOptions := rc0.NewListOptions()
@@ -230,7 +216,6 @@ func (p *RcodeZeroProvider) fetchZones() ([]*rc0.Zone, error) {
 //
 // Changes are submitted by change type.
 func (p *RcodeZeroProvider) submitChanges(changes []*rc0.RRSetChange) error {
-
 	if len(changes) == 0 {
 		return nil
 	}
@@ -242,11 +227,8 @@ func (p *RcodeZeroProvider) submitChanges(changes []*rc0.RRSetChange) error {
 
 	// separate into per-zone change sets to be passed to the API.
 	changesByZone := rcodezeroChangesByZone(zones, changes)
-
 	for zoneName, changes := range changesByZone {
-
 		for _, change := range changes {
-
 			logFields := log.Fields{
 				"record":  change.Name,
 				"content": change.Records[0].Content,
@@ -308,7 +290,6 @@ func (p *RcodeZeroProvider) submitChanges(changes []*rc0.RRSetChange) error {
 
 // NewRcodezeroChanges returns a RcodeZero specific array with rrset change objects.
 func (p *RcodeZeroProvider) NewRcodezeroChanges(action string, endpoints []*endpoint.Endpoint) []*rc0.RRSetChange {
-
 	changes := make([]*rc0.RRSetChange, 0, len(endpoints))
 
 	for _, _endpoint := range endpoints {
@@ -320,7 +301,6 @@ func (p *RcodeZeroProvider) NewRcodezeroChanges(action string, endpoints []*endp
 
 // NewRcodezeroChange returns a RcodeZero specific rrset change object.
 func (p *RcodeZeroProvider) NewRcodezeroChange(action string, endpoint *endpoint.Endpoint) *rc0.RRSetChange {
-
 	change := &rc0.RRSetChange{
 		Type:       endpoint.RecordType,
 		ChangeType: action,

provider/rfc2136/rfc2136.go

@@ -213,7 +213,6 @@ func (r rfc2136Provider) ApplyChanges(ctx context.Context, changes *plan.Changes
 	m.SetUpdate(r.zoneName)
 
 	for _, ep := range changes.Create {
-
 		if !r.domainFilter.Match(ep.DNSName) {
 			log.Debugf("Skipping record %s because it was filtered out by the specified --domain-filter", ep.DNSName)
 			continue
@@ -222,7 +221,6 @@ func (r rfc2136Provider) ApplyChanges(ctx context.Context, changes *plan.Changes
 		r.AddRecord(m, ep)
 	}
 	for _, ep := range changes.UpdateNew {
-
 		if !r.domainFilter.Match(ep.DNSName) {
 			log.Debugf("Skipping record %s because it was filtered out by the specified --domain-filter", ep.DNSName)
 			continue
@@ -231,7 +229,6 @@ func (r rfc2136Provider) ApplyChanges(ctx context.Context, changes *plan.Changes
 		r.UpdateRecord(m, ep)
 	}
 	for _, ep := range changes.Delete {
-
 		if !r.domainFilter.Match(ep.DNSName) {
 			log.Debugf("Skipping record %s because it was filtered out by the specified --domain-filter", ep.DNSName)
 			continue

provider/vinyldns/vinyldns.go

@@ -206,7 +206,7 @@ func (p *vinyldnsProvider) findRecordSetID(zoneID string, recordSetName string)
 		}
 	}
 
-	return "", fmt.Errorf("Record not found")
+	return "", fmt.Errorf("record not found")
 }
 
 func (p *vinyldnsProvider) ApplyChanges(ctx context.Context, changes *plan.Changes) error {

provider/vultr/vultr.go

@@ -156,7 +156,6 @@ func (p *VultrProvider) submitChanges(ctx context.Context, changes []*VultrChang
 
 	for zoneName, changes := range zoneChanges {
 		for _, change := range changes {
-
 			log.WithFields(log.Fields{
 				"record": change.ResourceRecordSet.Name,
 				"type":   change.ResourceRecordSet.Type,
@@ -202,7 +201,6 @@ func (p *VultrProvider) submitChanges(ctx context.Context, changes []*VultrChang
 			}
 		}
 	}
-
 	return nil
 }
 
@@ -221,7 +219,6 @@ func newVultrChanges(action string, endpoints []*endpoint.Endpoint) []*VultrChan
 	changes := make([]*VultrChanges, 0, len(endpoints))
 	ttl := vultrTTL
 	for _, e := range endpoints {
-
 		if e.RecordTTL.IsConfigured() {
 			ttl = int(e.RecordTTL)
 		}
@@ -256,7 +253,6 @@ func seperateChangesByZone(zones []govultr.DNSDomain, changes []*VultrChanges) m
 			continue
 		}
 		change[zone] = append(change[zone], c)
-
 	}
 	return change
 }

source/gateway.go

@@ -283,7 +283,6 @@ func (sc *gatewaySource) endpointsFromGateway(hostnames []string, gateway networ
 }
 
 func (sc *gatewaySource) hostNamesFromGateway(gateway networkingv1alpha3.Gateway) ([]string, error) {
-
 	var hostnames []string
 	for _, server := range gateway.Spec.Servers {
 		for _, host := range server.Hosts {

source/source.go

@@ -228,7 +228,7 @@ func matchLabelSelector(selector labels.Selector, srcAnnotations map[string]stri
 }
 
 func poll(interval time.Duration, timeout time.Duration, condition wait.ConditionFunc) error {
-	if config.FAST_POLL {
+	if config.FastPoll {
 		time.Sleep(5 * time.Millisecond)
 
 		ok, err := condition()