mirror of
https://github.com/prometheus/prometheus.git
synced 2025-08-05 21:57:09 +02:00
133 lines
3.1 KiB
Go
133 lines
3.1 KiB
Go
// Copyright 2016 The Prometheus Authors
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package discovery
|
|
|
|
import (
|
|
"context"
|
|
"sync"
|
|
"sync/atomic"
|
|
"testing"
|
|
|
|
"github.com/prometheus/prometheus/config"
|
|
yaml "gopkg.in/yaml.v2"
|
|
)
|
|
|
|
func TestTargetSetRecreatesTargetGroupsEveryRun(t *testing.T) {
|
|
|
|
verifyPresence := func(tgroups map[string]*config.TargetGroup, name string, present bool) {
|
|
if _, ok := tgroups[name]; ok != present {
|
|
msg := ""
|
|
if !present {
|
|
msg = "not "
|
|
}
|
|
t.Fatalf("'%s' should %sbe present in TargetSet.tgroups: %s", name, msg, tgroups)
|
|
}
|
|
}
|
|
|
|
cfg := &config.ServiceDiscoveryConfig{}
|
|
|
|
sOne := `
|
|
static_configs:
|
|
- targets: ["foo:9090"]
|
|
- targets: ["bar:9090"]
|
|
`
|
|
if err := yaml.Unmarshal([]byte(sOne), cfg); err != nil {
|
|
t.Fatalf("Unable to load YAML config sOne: %s", err)
|
|
}
|
|
called := make(chan struct{})
|
|
|
|
ts := NewTargetSet(&mockSyncer{
|
|
sync: func([]*config.TargetGroup) { called <- struct{}{} },
|
|
})
|
|
ctx, cancel := context.WithCancel(context.Background())
|
|
defer cancel()
|
|
|
|
go ts.Run(ctx)
|
|
|
|
ts.UpdateProviders(ProvidersFromConfig(*cfg, nil))
|
|
<-called
|
|
|
|
verifyPresence(ts.tgroups, "static/0/0", true)
|
|
verifyPresence(ts.tgroups, "static/0/1", true)
|
|
|
|
sTwo := `
|
|
static_configs:
|
|
- targets: ["foo:9090"]
|
|
`
|
|
if err := yaml.Unmarshal([]byte(sTwo), cfg); err != nil {
|
|
t.Fatalf("Unable to load YAML config sTwo: %s", err)
|
|
}
|
|
|
|
ts.UpdateProviders(ProvidersFromConfig(*cfg, nil))
|
|
<-called
|
|
|
|
verifyPresence(ts.tgroups, "static/0/0", true)
|
|
verifyPresence(ts.tgroups, "static/0/1", false)
|
|
}
|
|
|
|
type mockSyncer struct {
|
|
sync func(tgs []*config.TargetGroup)
|
|
}
|
|
|
|
func (s *mockSyncer) Sync(tgs []*config.TargetGroup) {
|
|
if s.sync != nil {
|
|
s.sync(tgs)
|
|
}
|
|
}
|
|
|
|
type mockTargetProvider struct {
|
|
callCount *uint32
|
|
}
|
|
|
|
func (tp mockTargetProvider) Run(ctx context.Context, up chan<- []*config.TargetGroup) {
|
|
atomic.AddUint32(tp.callCount, 1)
|
|
up <- []*config.TargetGroup{{Source: "dummySource"}}
|
|
}
|
|
|
|
func TestTargetSetRunsSameTargetProviderMultipleTimes(t *testing.T) {
|
|
|
|
var wg sync.WaitGroup
|
|
|
|
wg.Add(2)
|
|
|
|
ts1 := NewTargetSet(&mockSyncer{
|
|
sync: func([]*config.TargetGroup) { wg.Done() },
|
|
})
|
|
|
|
ts2 := NewTargetSet(&mockSyncer{
|
|
sync: func([]*config.TargetGroup) { wg.Done() },
|
|
})
|
|
|
|
ctx, cancel := context.WithCancel(context.Background())
|
|
defer cancel()
|
|
|
|
tp := mockTargetProvider{}
|
|
var callCount uint32
|
|
tp.callCount = &callCount
|
|
|
|
targetProviders := map[string]TargetProvider{}
|
|
targetProviders["testProvider"] = tp
|
|
|
|
go ts1.Run(ctx)
|
|
go ts2.Run(ctx)
|
|
|
|
ts1.UpdateProviders(targetProviders)
|
|
ts2.UpdateProviders(targetProviders)
|
|
wg.Wait()
|
|
|
|
if callCount != 2 {
|
|
t.Errorf("Was expecting 2 calls received %v", callCount)
|
|
}
|
|
}
|