forked from knative/serving
/
ha.go
153 lines (136 loc) · 5.06 KB
/
ha.go
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/*
Copyright 2020 The Knative Authors
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package ha
import (
"fmt"
"net/http"
"net/url"
"strings"
"testing"
"time"
"github.com/google/go-cmp/cmp"
appsv1 "k8s.io/api/apps/v1"
apierrs "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/wait"
pkgTest "knative.dev/pkg/test"
"knative.dev/pkg/test/spoof"
"knative.dev/serving/pkg/apis/networking"
"knative.dev/serving/pkg/apis/serving"
rtesting "knative.dev/serving/pkg/testing/v1"
"knative.dev/serving/test"
"knative.dev/serving/test/e2e"
v1test "knative.dev/serving/test/v1"
)
const (
haReplicas = 2
)
func getLeader(t *testing.T, clients *test.Clients, lease string) (string, error) {
var leader string
err := wait.PollImmediate(test.PollInterval, time.Minute, func() (bool, error) {
lease, err := clients.KubeClient.Kube.CoordinationV1().Leases(test.ServingFlags.SystemNamespace).Get(lease, metav1.GetOptions{})
if err != nil {
return false, fmt.Errorf("error getting lease %s: %w", lease, err)
}
leader = strings.Split(*lease.Spec.HolderIdentity, "_")[0]
// the leader must be an existing pod
return podExists(clients, leader)
})
return leader, err
}
func waitForPodDeleted(t *testing.T, clients *test.Clients, podName string) error {
return wait.PollImmediate(test.PollInterval, time.Minute, func() (bool, error) {
exists, err := podExists(clients, podName)
return !exists, err
})
}
func getPublicEndpoints(t *testing.T, clients *test.Clients, revision string) ([]string, error) {
endpoints, err := clients.KubeClient.Kube.CoreV1().Endpoints(test.ServingNamespace).List(metav1.ListOptions{
LabelSelector: fmt.Sprintf("%s=%s,%s=%s",
serving.RevisionLabelKey, revision,
networking.ServiceTypeKey, networking.ServiceTypePublic,
),
})
if err != nil || len(endpoints.Items) != 1 {
return nil, fmt.Errorf("no endpoints or error: %w", err)
}
var hosts []string
for _, addr := range endpoints.Items[0].Subsets[0].Addresses {
hosts = append(hosts, addr.IP)
}
return hosts, nil
}
func waitForChangedPublicEndpoints(t *testing.T, clients *test.Clients, revision string, origEndpoints []string) error {
return wait.PollImmediate(100*time.Millisecond, time.Minute, func() (bool, error) {
newEndpoints, err := getPublicEndpoints(t, clients, revision)
return !cmp.Equal(origEndpoints, newEndpoints), err
})
}
func podExists(clients *test.Clients, podName string) (bool, error) {
if _, err := clients.KubeClient.Kube.CoreV1().Pods(test.ServingFlags.SystemNamespace).Get(podName, metav1.GetOptions{}); err != nil {
if apierrs.IsNotFound(err) {
return false, nil
}
return false, err
}
return true, nil
}
func waitForDeploymentScale(clients *test.Clients, name string, scale int) error {
return pkgTest.WaitForDeploymentState(
clients.KubeClient,
name,
func(d *appsv1.Deployment) (bool, error) {
return d.Status.ReadyReplicas == int32(scale), nil
},
"DeploymentIsScaled",
test.ServingFlags.SystemNamespace,
time.Minute,
)
}
func createPizzaPlanetService(t *testing.T, fopt ...rtesting.ServiceOption) (test.ResourceNames, *v1test.ResourceObjects) {
t.Helper()
clients := e2e.Setup(t)
names := test.ResourceNames{
Service: test.ObjectNameForTest(t),
Image: test.PizzaPlanet1,
}
resources, err := v1test.CreateServiceReady(t, clients, &names, fopt...)
if err != nil {
t.Fatalf("Failed to create Service: %v", err)
}
assertServiceEventuallyWorks(t, clients, names, resources.Service.Status.URL.URL(), test.PizzaPlanetText1)
return names, resources
}
func assertServiceWorksNow(t *testing.T, clients *test.Clients, spoofingClient *spoof.SpoofingClient, names test.ResourceNames, url *url.URL, expectedText string) {
t.Helper()
req, err := http.NewRequest(http.MethodGet, url.String(), nil)
if err != nil {
t.Fatalf("Failed to create request: %v", err)
}
resp, err := spoofingClient.Do(req)
if err != nil || !strings.Contains(string(resp.Body), expectedText) {
t.Fatalf("Failed to verify service works. Response body: %s, Error: %v", string(resp.Body), err)
}
}
func assertServiceEventuallyWorks(t *testing.T, clients *test.Clients, names test.ResourceNames, url *url.URL, expectedText string) {
t.Helper()
if _, err := pkgTest.WaitForEndpointState(
clients.KubeClient,
t.Logf,
url,
v1test.RetryingRouteInconsistency(pkgTest.MatchesAllOf(pkgTest.IsStatusOK, pkgTest.EventuallyMatchesBody(expectedText))),
"WaitForEndpointToServeText",
test.ServingFlags.ResolvableDomain); err != nil {
t.Fatalf("The endpoint for Route %s at %s didn't serve the expected text %q: %v", names.Route, url, expectedText, err)
}
}