65 lines
		
	
	
		
			1.5 KiB
		
	
	
	
		
			Go
		
	
	
	
			
		
		
	
	
			65 lines
		
	
	
		
			1.5 KiB
		
	
	
	
		
			Go
		
	
	
	
| // Copyright 2013 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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| 
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| package retrieval
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| 
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| import (
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| 	"time"
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| 
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| 	clientmodel "github.com/prometheus/client_golang/model"
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| 
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| 	"github.com/prometheus/prometheus/config"
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| )
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| 
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| type nopAppender struct{}
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| 
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| func (a nopAppender) Append(*clientmodel.Sample) {
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| }
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| 
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| type slowAppender struct{}
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| 
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| func (a slowAppender) Append(*clientmodel.Sample) {
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| 	time.Sleep(time.Millisecond)
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| 	return
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| }
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| 
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| type collectResultAppender struct {
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| 	result clientmodel.Samples
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| }
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| 
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| func (a *collectResultAppender) Append(s *clientmodel.Sample) {
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| 	a.result = append(a.result, s)
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| }
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| 
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| // fakeTargetProvider implements a TargetProvider and allows manual injection
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| // of TargetGroups through the update channel.
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| type fakeTargetProvider struct {
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| 	sources []string
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| 	update  chan *config.TargetGroup
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| }
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| 
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| func (tp *fakeTargetProvider) Run(ch chan<- *config.TargetGroup) {
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| 	defer close(ch)
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| 	for tg := range tp.update {
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| 		ch <- tg
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| 	}
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| }
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| 
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| func (tp *fakeTargetProvider) Stop() {
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| 	close(tp.update)
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| }
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| 
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| func (tp *fakeTargetProvider) Sources() []string {
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| 	return tp.sources
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| }
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