mirror of
https://github.com/prometheus/prometheus.git
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3b970c5133
This includes required refactorings to enable replacing the http client (for testing) and moving the NotificationReq type definitions to the "notifications" package, so that this package doesn't need to depend on "rules" anymore and that it can instead use a representation of the required data which only includes the necessary fields.
121 lines
3.2 KiB
Go
121 lines
3.2 KiB
Go
// Copyright 2013 Prometheus Team
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package retrieval
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import (
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"net/http"
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"net/http/httptest"
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"testing"
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"time"
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clientmodel "github.com/prometheus/client_golang/model"
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"github.com/prometheus/client_golang/extraction"
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"github.com/prometheus/prometheus/utility"
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)
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func TestTargetScrapeUpdatesState(t *testing.T) {
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testTarget := target{
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scheduler: literalScheduler{},
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state: UNKNOWN,
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address: "bad schema",
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httpClient: utility.NewDeadlineClient(0),
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}
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testTarget.Scrape(time.Time{}, make(chan *extraction.Result, 2))
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if testTarget.state != UNREACHABLE {
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t.Errorf("Expected target state %v, actual: %v", UNREACHABLE, testTarget.state)
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}
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}
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func TestTargetRecordScrapeHealth(t *testing.T) {
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testTarget := target{
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scheduler: literalScheduler{},
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address: "http://example.url",
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baseLabels: clientmodel.LabelSet{clientmodel.JobLabel: "testjob"},
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httpClient: utility.NewDeadlineClient(0),
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}
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now := time.Now()
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results := make(chan *extraction.Result)
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go testTarget.recordScrapeHealth(results, now, true)
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result := <-results
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if len(result.Samples) != 1 {
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t.Fatalf("Expected one sample, got %d", len(result.Samples))
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}
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actual := result.Samples[0]
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expected := &clientmodel.Sample{
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Metric: clientmodel.Metric{
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clientmodel.MetricNameLabel: ScrapeHealthMetricName,
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InstanceLabel: "http://example.url",
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clientmodel.JobLabel: "testjob",
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},
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Timestamp: now,
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Value: 1,
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}
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if result.Err != nil {
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t.Fatalf("Got unexpected error: %v", result.Err)
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}
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if !actual.Equal(expected) {
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t.Fatalf("Expected and actual samples not equal. Expected: %v, actual: %v", expected, actual)
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}
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}
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func TestTargetScrapeTimeout(t *testing.T) {
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signal := make(chan bool, 1)
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server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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<-signal
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w.Header().Set("Content-Type", `application/json; schema="prometheus/telemetry"; version=0.0.2`)
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w.Write([]byte(`[]`))
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}))
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defer server.Close()
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testTarget := NewTarget(server.URL, 10*time.Millisecond, clientmodel.LabelSet{})
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results := make(chan *extraction.Result, 1024)
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// scrape once without timeout
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signal <- true
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if err := testTarget.Scrape(time.Now(), results); err != nil {
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t.Fatal(err)
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}
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// let the deadline lapse
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time.Sleep(15 * time.Millisecond)
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// now scrape again
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signal <- true
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if err := testTarget.Scrape(time.Now(), results); err != nil {
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t.Fatal(err)
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}
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// now timeout
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if err := testTarget.Scrape(time.Now(), results); err == nil {
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t.Fatal("expected scrape to timeout")
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} else {
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signal <- true // let handler continue
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}
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// now scrape again without timeout
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signal <- true
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if err := testTarget.Scrape(time.Now(), results); err != nil {
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t.Fatal(err)
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}
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}
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