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46 lines
1.5 KiB
46 lines
1.5 KiB
// 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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