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72 lines
1.7 KiB
72 lines
1.7 KiB
// 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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