mirror of
https://github.com/prometheus/prometheus.git
synced 2024-09-19 23:37:31 -07:00
86 lines
2.1 KiB
Go
86 lines
2.1 KiB
Go
// Copyright 2016 The Prometheus 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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//
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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 discovery
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import (
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"testing"
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"github.com/prometheus/prometheus/config"
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"golang.org/x/net/context"
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yaml "gopkg.in/yaml.v2"
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)
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func TestTargetSetRecreatesTargetGroupsEveryRun(t *testing.T) {
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verifyPresence := func(tgroups map[string]*config.TargetGroup, name string, present bool) {
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if _, ok := tgroups[name]; ok != present {
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msg := ""
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if !present {
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msg = "not "
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}
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t.Fatalf("'%s' should %sbe present in TargetSet.tgroups: %s", name, msg, tgroups)
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}
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}
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cfg := &config.ServiceDiscoveryConfig{}
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sOne := `
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static_configs:
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- targets: ["foo:9090"]
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- targets: ["bar:9090"]
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`
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if err := yaml.Unmarshal([]byte(sOne), cfg); err != nil {
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t.Fatalf("Unable to load YAML config sOne: %s", err)
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}
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called := make(chan struct{})
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ts := NewTargetSet(&mockSyncer{
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sync: func([]*config.TargetGroup) { called <- struct{}{} },
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})
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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go ts.Run(ctx)
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ts.UpdateProviders(ProvidersFromConfig(*cfg))
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<-called
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verifyPresence(ts.tgroups, "static/0/0", true)
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verifyPresence(ts.tgroups, "static/0/1", true)
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sTwo := `
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static_configs:
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- targets: ["foo:9090"]
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`
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if err := yaml.Unmarshal([]byte(sTwo), cfg); err != nil {
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t.Fatalf("Unable to load YAML config sTwo: %s", err)
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}
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ts.UpdateProviders(ProvidersFromConfig(*cfg))
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<-called
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verifyPresence(ts.tgroups, "static/0/0", true)
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verifyPresence(ts.tgroups, "static/0/1", false)
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}
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type mockSyncer struct {
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sync func(tgs []*config.TargetGroup)
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}
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func (s *mockSyncer) Sync(tgs []*config.TargetGroup) {
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if s.sync != nil {
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s.sync(tgs)
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}
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}
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