mirror of https://github.com/knative/pkg.git
122 lines
3.3 KiB
Go
122 lines
3.3 KiB
Go
/*
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Copyright 2018 The Knative Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package metrics
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import (
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"testing"
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"time"
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. "github.com/knative/pkg/logging/testing"
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)
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func TestNewStackdriverExporter(t *testing.T) {
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// The stackdriver project ID is required for stackdriver exporter.
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e, err := newStackdriverExporter(&metricsConfig{
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domain: servingDomain,
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component: testComponent,
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backendDestination: Stackdriver,
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stackdriverProjectID: testProj}, TestLogger(t))
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if err != nil {
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t.Error(err)
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}
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if e == nil {
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t.Error("expected a non-nil metrics exporter")
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}
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expectNoPromSrv(t)
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}
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func TestNewPrometheusExporter(t *testing.T) {
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// The stackdriver project ID is not required for prometheus exporter.
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e, err := newPrometheusExporter(&metricsConfig{
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domain: servingDomain,
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component: testComponent,
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backendDestination: Prometheus,
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stackdriverProjectID: ""}, TestLogger(t))
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if err != nil {
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t.Error(err)
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}
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if e == nil {
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t.Error("expected a non-nil metrics exporter")
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}
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expectPromSrv(t)
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}
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func TestMetricsExporter(t *testing.T) {
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err := newMetricsExporter(&metricsConfig{
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domain: servingDomain,
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component: testComponent,
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backendDestination: "unsupported",
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stackdriverProjectID: ""}, TestLogger(t))
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if err == nil {
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t.Errorf("Expected an error for unsupported backend %v", err)
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}
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err = newMetricsExporter(&metricsConfig{
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domain: servingDomain,
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component: testComponent,
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backendDestination: Stackdriver,
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stackdriverProjectID: testProj}, TestLogger(t))
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if err != nil {
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t.Error(err)
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}
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}
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func TestInterlevedExporters(t *testing.T) {
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// First create a stackdriver exporter
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err := newMetricsExporter(&metricsConfig{
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domain: servingDomain,
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component: testComponent,
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backendDestination: Stackdriver,
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stackdriverProjectID: testProj}, TestLogger(t))
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if err != nil {
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t.Error(err)
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}
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expectNoPromSrv(t)
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// Then switch to prometheus exporter
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err = newMetricsExporter(&metricsConfig{
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domain: servingDomain,
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component: testComponent,
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backendDestination: Prometheus,
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stackdriverProjectID: "",
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}, TestLogger(t))
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if err != nil {
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t.Error(err)
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}
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expectPromSrv(t)
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// Finally switch to stackdriver exporter
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err = newMetricsExporter(&metricsConfig{
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domain: servingDomain,
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component: testComponent,
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backendDestination: Stackdriver,
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stackdriverProjectID: testProj}, TestLogger(t))
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if err != nil {
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t.Error(err)
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}
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}
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func expectPromSrv(t *testing.T) {
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time.Sleep(200 * time.Millisecond)
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srv := getCurPromSrv()
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if srv == nil {
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t.Error("expected a server for prometheus exporter")
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}
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}
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func expectNoPromSrv(t *testing.T) {
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time.Sleep(200 * time.Millisecond)
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srv := getCurPromSrv()
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if srv != nil {
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t.Error("expected no server for stackdriver exporter")
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}
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}
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