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a5141e4d0a
The storage builders need to work with the assumption that they have a copy of the underlying configuration data if any mutations are made.
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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