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avoid unnecessary updating for CRD resource

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with test updated
This commit is contained in:
xunpan 2018-12-07 21:52:06 -05:00
parent e2b47aaf16
commit fc245c088d
2 changed files with 45 additions and 6 deletions
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5
source/crd.go
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@ -118,6 +118,11 @@ func (cs *crdSource) Endpoints() ([]*endpoint.Endpoint, error) {
for _, dnsEndpoint := range result.Items {
endpoints = append(endpoints, dnsEndpoint.Spec.Endpoints...)
if dnsEndpoint.Status.ObservedGeneration == dnsEndpoint.Generation {
continue
}
dnsEndpoint.Status.ObservedGeneration = dnsEndpoint.Generation
// Update the ObservedGeneration
_, err = cs.UpdateStatus(&dnsEndpoint)

42
source/crd_test.go
View File

@ -18,6 +18,7 @@ package source
import (
"bytes"
"encoding/json"
"fmt"
"io"
"io/ioutil"
@ -54,13 +55,13 @@ func objBody(codec runtime.Codec, obj runtime.Object) io.ReadCloser {
return ioutil.NopCloser(bytes.NewReader([]byte(runtime.EncodeOrDie(codec, obj))))
}
func startCRDServerToServeTargets(endpoints []*endpoint.Endpoint, apiVersion, kind, namespace, name string) rest.Interface {
func startCRDServerToServeTargets(endpoints []*endpoint.Endpoint, apiVersion, kind, namespace, name string, t *testing.T) rest.Interface {
groupVersion, _ := schema.ParseGroupVersion(apiVersion)
scheme := runtime.NewScheme()
addKnownTypes(scheme, groupVersion)
dnsEndpointList := endpoint.DNSEndpointList{}
dnsEndpoint := endpoint.DNSEndpoint{
dnsEndpoint := &endpoint.DNSEndpoint{
TypeMeta: metav1.TypeMeta{
APIVersion: apiVersion,
Kind: kind,
@ -68,6 +69,7 @@ func startCRDServerToServeTargets(endpoints []*endpoint.Endpoint, apiVersion, ki
ObjectMeta: metav1.ObjectMeta{
Name: name,
Namespace: namespace,
Generation: 1,
},
Spec: endpoint.DNSEndpointSpec{
Endpoints: endpoints,
@ -88,10 +90,18 @@ func startCRDServerToServeTargets(endpoints []*endpoint.Endpoint, apiVersion, ki
case p == "/apis/"+apiVersion+"/"+strings.ToLower(kind)+"s" && m == http.MethodGet:
fallthrough
case p == "/apis/"+apiVersion+"/namespaces/"+namespace+"/"+strings.ToLower(kind)+"s" && m == http.MethodGet:
dnsEndpointList.Items = append(dnsEndpointList.Items, dnsEndpoint)
dnsEndpointList.Items = dnsEndpointList.Items[:0]
dnsEndpointList.Items = append(dnsEndpointList.Items, *dnsEndpoint)
return &http.Response{StatusCode: http.StatusOK, Header: defaultHeader(), Body: objBody(codec, &dnsEndpointList)}, nil
case strings.HasPrefix(p, "/apis/"+apiVersion+"/namespaces/") && strings.HasSuffix(p, strings.ToLower(kind)+"s") && m == http.MethodGet:
return &http.Response{StatusCode: http.StatusOK, Header: defaultHeader(), Body: objBody(codec, &dnsEndpointList)}, nil
case p == "/apis/"+apiVersion+"/namespaces/"+namespace+"/"+strings.ToLower(kind)+"s/"+name+"/status" && m == http.MethodPut:
decoder := json.NewDecoder(req.Body)
var body endpoint.DNSEndpoint
decoder.Decode(&body)
dnsEndpoint.Status.ObservedGeneration = body.Status.ObservedGeneration
return &http.Response{StatusCode: http.StatusOK, Header: defaultHeader(), Body: objBody(codec, dnsEndpoint)}, nil
default:
return nil, fmt.Errorf("unexpected request: %#v\n%#v", req.URL, req)
}
@ -200,6 +210,8 @@ func testCRDSourceEndpoints(t *testing.T) {
apiVersion: "test.k8s.io/v1alpha1",
registeredKind: "DNSEndpoint",
kind: "DNSEndpoint",
namespace: "foo",
registeredNamespace: "foo",
endpoints: []*endpoint.Endpoint{
{DNSName: "abc.example.org",
Targets: endpoint.Targets{"1.2.3.4"},
@ -216,6 +228,8 @@ func testCRDSourceEndpoints(t *testing.T) {
apiVersion: "test.k8s.io/v1alpha1",
registeredKind: "DNSEndpoint",
kind: "DNSEndpoint",
namespace: "foo",
registeredNamespace: "foo",
endpoints: []*endpoint.Endpoint{
{DNSName: "abc.example.org",
Targets: endpoint.Targets{"1.2.3.4"},
@ -233,7 +247,7 @@ func testCRDSourceEndpoints(t *testing.T) {
},
} {
t.Run(ti.title, func(t *testing.T) {
restClient := startCRDServerToServeTargets(ti.endpoints, ti.registeredAPIVersion, ti.registeredKind, ti.registeredNamespace, "")
restClient := startCRDServerToServeTargets(ti.endpoints, ti.registeredAPIVersion, ti.registeredKind, ti.registeredNamespace, "test", t)
groupVersion, err := schema.ParseGroupVersion(ti.apiVersion)
require.NoError(t, err)
@ -253,8 +267,28 @@ func testCRDSourceEndpoints(t *testing.T) {
return
}
if err == nil {
validateCRDResource(t, cs, ti.expectError)
}
// Validate received endpoints against expected endpoints.
validateEndpoints(t, receivedEndpoints, ti.endpoints)
})
}
}
func validateCRDResource(t *testing.T, src Source, expectError bool) {
cs := src.(*crdSource)
result, err := cs.List(&metav1.ListOptions{})
if expectError {
require.Errorf(t, err, "Received err %v", err)
} else {
require.NoErrorf(t, err, "Received err %v", err)
}
for _, dnsEndpoint := range result.Items {
if dnsEndpoint.Status.ObservedGeneration != dnsEndpoint.Generation {
require.Errorf(t, err, "Unexpected CRD resource result: ObservedGenerations <%v> is not equal to Generation<%v>", dnsEndpoint.Status.ObservedGeneration, dnsEndpoint.Generation)
}
}
}