47 lines
1.5 KiB
Go
47 lines
1.5 KiB
Go
// Copyright 2013 Prometheus Team
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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/client_golang/extraction"
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clientmodel "github.com/prometheus/client_golang/model"
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)
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// MergeLabelsIngester merges a labelset ontop of a given extraction result and
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// passes the result on to another ingester. Label collisions are avoided by
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// appending a label prefix to any newly merged colliding labels.
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type MergeLabelsIngester struct {
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Labels clientmodel.LabelSet
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CollisionPrefix clientmodel.LabelName
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Ingester extraction.Ingester
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}
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func (i *MergeLabelsIngester) Ingest(r *extraction.Result) error {
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for _, s := range r.Samples {
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s.Metric.MergeFromLabelSet(i.Labels, i.CollisionPrefix)
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}
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return i.Ingester.Ingest(r)
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}
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// ChannelIngester feeds results into a channel without modifying them.
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type ChannelIngester chan<- *extraction.Result
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func (i ChannelIngester) Ingest(r *extraction.Result) error {
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i <- r
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return nil
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}
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