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util.go
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util.go
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package kube2e
import (
"context"
"os"
"path/filepath"
"runtime"
"time"
"github.com/golang/protobuf/ptypes/wrappers"
"github.com/onsi/ginkgo/v2"
. "github.com/onsi/gomega"
errors "github.com/rotisserie/eris"
"github.com/solo-io/gloo/projects/gloo/cli/pkg/cmd/check"
"github.com/solo-io/gloo/projects/gloo/cli/pkg/cmd/options"
clienthelpers "github.com/solo-io/gloo/projects/gloo/cli/pkg/helpers"
"github.com/solo-io/gloo/projects/gloo/cli/pkg/printers"
v1 "github.com/solo-io/gloo/projects/gloo/pkg/api/v1"
"github.com/solo-io/gloo/test/gomega/assertions"
"github.com/solo-io/gloo/test/kube2e/helper"
"github.com/solo-io/gloo/test/kube2e/upgrade"
"github.com/solo-io/gloo/test/testutils"
"github.com/solo-io/go-utils/stats"
"github.com/solo-io/solo-kit/pkg/api/v1/clients"
"github.com/solo-io/solo-kit/pkg/api/v1/resources/core"
"go.uber.org/zap/zapcore"
admissionregv1 "k8s.io/api/admissionregistration/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
const (
// UniqueTestResourceLabel can be assigned to the resources used by kube2e tests
// This unique label per test run ensures that the generated snapshot is different on subsequent runs
// We have previously seen flakes where a resource is deleted and re-created with the same hash and thus
// the emitter can miss the update
UniqueTestResourceLabel = "gloo-kube2e-test-id"
)
func GetHttpEchoImage() string {
httpEchoImage := "hashicorp/http-echo"
if runtime.GOARCH == "arm64" {
httpEchoImage = "gcr.io/solo-test-236622/http-echo"
}
return httpEchoImage
}
// GlooctlCheckEventuallyHealthy will run up until proved timeoutInterval or until gloo is reported as healthy
func GlooctlCheckEventuallyHealthy(offset int, testHelper *helper.SoloTestHelper, timeoutInterval string) {
EventuallyWithOffset(offset, func() error {
contextWithCancel, cancel := context.WithCancel(context.Background())
defer cancel()
opts := &options.Options{
Metadata: core.Metadata{
Namespace: testHelper.InstallNamespace,
},
Top: options.Top{
Ctx: contextWithCancel,
},
}
err := check.CheckResources(contextWithCancel, printers.P{}, opts)
if err != nil {
return errors.Wrap(err, "glooctl check detected a problem with the installation")
}
return nil
}, timeoutInterval, "5s").Should(BeNil())
}
func EventuallyReachesConsistentState(installNamespace string) {
// We port-forward the Gloo deployment stats port to inspect the metrics and log settings
glooStatsForwardConfig := assertions.StatsPortFwd{
ResourceName: "deployment/gloo",
ResourceNamespace: installNamespace,
LocalPort: stats.DefaultPort,
TargetPort: stats.DefaultPort,
}
// Gloo components are configured to log to the Info level by default
logLevelAssertion := assertions.LogLevelAssertion(zapcore.InfoLevel)
// The emitter at some point should stabilize and not continue to increase the number of snapshots produced
// We choose 4 here as a bit of a magic number, but we feel comfortable that if 4 consecutive polls of the metrics
// endpoint returns that same value, then we have stabilized
identicalResultInARow := 4
emitterMetricAssertion, _ := assertions.IntStatisticReachesConsistentValueAssertion("api_gloosnapshot_gloo_solo_io_emitter_snap_out", identicalResultInARow)
ginkgo.By("Gloo eventually reaches a consistent state")
offset := 1 // This method is called directly from a TestSuite
assertions.EventuallyWithOffsetStatisticsMatchAssertions(offset, glooStatsForwardConfig,
logLevelAssertion.WithOffset(offset),
emitterMetricAssertion.WithOffset(offset),
)
}
func UpdateDisableTransformationValidationSetting(ctx context.Context, shouldDisable bool, installNamespace string) {
UpdateSettings(ctx, func(settings *v1.Settings) {
Expect(settings.GetGateway().GetValidation()).NotTo(BeNil())
settings.GetGateway().GetValidation().DisableTransformationValidation = &wrappers.BoolValue{Value: shouldDisable}
}, installNamespace)
}
// enable/disable strict validation
func UpdateAlwaysAcceptSetting(ctx context.Context, alwaysAccept bool, installNamespace string) {
UpdateSettings(ctx, func(settings *v1.Settings) {
Expect(settings.GetGateway().GetValidation()).NotTo(BeNil())
settings.GetGateway().GetValidation().AlwaysAccept = &wrappers.BoolValue{Value: alwaysAccept}
}, installNamespace)
}
func UpdateAllowWarningsSetting(ctx context.Context, allowWarnings bool, installNamespace string) {
UpdateSettings(ctx, func(settings *v1.Settings) {
Expect(settings.GetGateway().GetValidation()).NotTo(BeNil())
settings.GetGateway().GetValidation().AllowWarnings = &wrappers.BoolValue{Value: allowWarnings}
}, installNamespace)
}
func UpdateRestEdsSetting(ctx context.Context, enableRestEds bool, installNamespace string) {
UpdateSettings(ctx, func(settings *v1.Settings) {
Expect(settings.GetGloo()).NotTo(BeNil())
settings.GetGloo().EnableRestEds = &wrappers.BoolValue{Value: enableRestEds}
}, installNamespace)
}
func UpdateReplaceInvalidRoutes(ctx context.Context, replaceInvalidRoutes bool, installNamespace string) {
UpdateSettings(ctx, func(settings *v1.Settings) {
Expect(settings.GetGloo().GetInvalidConfigPolicy()).NotTo(BeNil())
settings.GetGloo().GetInvalidConfigPolicy().ReplaceInvalidRoutes = replaceInvalidRoutes
}, installNamespace)
}
func UpdateSettings(ctx context.Context, updateSettings func(settings *v1.Settings), installNamespace string) {
// when validation config changes, the validation server restarts -- give time for it to come up again.
// without the wait, the validation webhook may temporarily fallback to it's failurePolicy, which is not
// what we want to test.
// TODO (samheilbron) We should avoid relying on time.Sleep in our tests as these tend to cause flakes
waitForSettingsToPropagate := func() {
time.Sleep(3 * time.Second)
}
UpdateSettingsWithPropagationDelay(updateSettings, waitForSettingsToPropagate, ctx, installNamespace)
}
func UpdateSettingsWithPropagationDelay(updateSettings func(settings *v1.Settings), waitForSettingsToPropagate func(), ctx context.Context, installNamespace string) {
settingsClient := clienthelpers.MustSettingsClient(ctx)
settings, err := settingsClient.Read(installNamespace, "default", clients.ReadOpts{})
Expect(err).NotTo(HaveOccurred())
updateSettings(settings)
_, err = settingsClient.Write(settings, clients.WriteOpts{OverwriteExisting: true})
Expect(err).NotTo(HaveOccurred())
waitForSettingsToPropagate()
}
func ToFile(content string) string {
f, err := os.CreateTemp("", "")
ExpectWithOffset(1, err).NotTo(HaveOccurred())
n, err := f.WriteString(content)
ExpectWithOffset(1, err).NotTo(HaveOccurred())
ExpectWithOffset(1, n).To(Equal(len(content)))
_ = f.Close()
return f.Name()
}
// https://github.com/solo-io/gloo/issues/4043#issuecomment-772706604
// We should move tests away from using the testserver, and instead depend on EphemeralContainers.
// The default response changed in later kube versions, which caused this value to change.
// Ideally the test utilities used by Gloo are maintained in the Gloo repo, so I opted to move
// this constant here.
// This response is given by the testserver from the python2 SimpleHTTPServer
func TestServerHttpResponse() string {
if runtime.GOARCH == "arm64" {
return helper.SimpleHttpResponseArm
} else {
return helper.SimpleHttpResponse
}
}
// For nightly runs, we want to install a released version rather than using a locally built chart
// To do this, set the environment variable RELEASED_VERSION with either a version name or "LATEST" to get the last release
func GetTestReleasedVersion(ctx context.Context, repoName string) string {
releasedVersion := os.Getenv(testutils.ReleasedVersion)
if releasedVersion == "" {
// In the case where the released version is empty, we return an empty string
// The function which consumes this value will then use the locally built chart
return releasedVersion
}
if releasedVersion == "LATEST" {
_, current, err := upgrade.GetUpgradeVersions(ctx, repoName)
Expect(err).NotTo(HaveOccurred())
return current.String()
}
// Assume that releasedVersion is a valid version, for a previously released version of Gloo Edge
return releasedVersion
}
func GetTestHelper(ctx context.Context, namespace string) (*helper.SoloTestHelper, error) {
cwd, err := os.Getwd()
if err != nil {
return nil, err
}
rootDir := filepath.Join(cwd, "../../..")
return GetTestHelperForRootDir(ctx, rootDir, namespace)
}
func GetTestHelperForRootDir(ctx context.Context, rootDir, namespace string) (*helper.SoloTestHelper, error) {
if useVersion := GetTestReleasedVersion(ctx, "gloo"); useVersion != "" {
return helper.NewSoloTestHelper(func(defaults helper.TestConfig) helper.TestConfig {
defaults.RootDir = rootDir
defaults.HelmChartName = "gloo"
defaults.InstallNamespace = namespace
defaults.ReleasedVersion = useVersion
defaults.Verbose = true
return defaults
})
} else {
return helper.NewSoloTestHelper(func(defaults helper.TestConfig) helper.TestConfig {
defaults.RootDir = rootDir
defaults.HelmChartName = "gloo"
defaults.InstallNamespace = namespace
defaults.Verbose = true
return defaults
})
}
}
func GetFailurePolicy(ctx context.Context, webhookName string) *admissionregv1.FailurePolicyType {
cfg := GetValidatingWebhookWithOffset(ctx, 2, webhookName)
ExpectWithOffset(1, cfg.Webhooks).To(HaveLen(1))
return cfg.Webhooks[0].FailurePolicy
}
func UpdateFailurePolicy(ctx context.Context, webhookName string, failurePolicy admissionregv1.FailurePolicyType) {
kubeClient := clienthelpers.MustKubeClient()
cfg := GetValidatingWebhookWithOffset(ctx, 2, webhookName)
ExpectWithOffset(1, cfg.Webhooks).To(HaveLen(1))
cfg.Webhooks[0].FailurePolicy = &failurePolicy
_, err := kubeClient.AdmissionregistrationV1().ValidatingWebhookConfigurations().Update(ctx, cfg, metav1.UpdateOptions{})
ExpectWithOffset(1, err).NotTo(HaveOccurred())
}
func GetValidatingWebhook(ctx context.Context, webhookName string) *admissionregv1.ValidatingWebhookConfiguration {
return GetValidatingWebhookWithOffset(ctx, 1, webhookName)
}
func GetValidatingWebhookWithOffset(ctx context.Context, offset int, webhookName string) *admissionregv1.ValidatingWebhookConfiguration {
kubeClient := clienthelpers.MustKubeClient()
cfg, err := kubeClient.AdmissionregistrationV1().ValidatingWebhookConfigurations().Get(ctx, webhookName, metav1.GetOptions{})
ExpectWithOffset(offset, err).NotTo(HaveOccurred())
return cfg
}