73 lines
1.7 KiB
Go
73 lines
1.7 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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package retrieval
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import (
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"github.com/prometheus/common/model"
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"github.com/prometheus/prometheus/config"
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)
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type nopAppender struct{}
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func (a nopAppender) Append(*model.Sample) error {
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return nil
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}
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func (a nopAppender) NeedsThrottling() bool {
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return false
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}
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type collectResultAppender struct {
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result model.Samples
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throttled bool
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}
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func (a *collectResultAppender) Append(s *model.Sample) error {
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for ln, lv := range s.Metric {
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if len(lv) == 0 {
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delete(s.Metric, ln)
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}
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}
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a.result = append(a.result, s)
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return nil
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}
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func (a *collectResultAppender) NeedsThrottling() bool {
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return a.throttled
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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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func (tp *fakeTargetProvider) Run(ch chan<- config.TargetGroup, done <-chan struct{}) {
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defer close(ch)
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for {
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select {
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case tg := <-tp.update:
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ch <- *tg
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case <-done:
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return
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}
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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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