mirror of https://github.com/prometheus/prometheus
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
70 lines
2.5 KiB
70 lines
2.5 KiB
// Copyright 2013 Prometheus Team |
|
// Licensed under the Apache License, Version 2.0 (the "License"); |
|
// you may not use this file except in compliance with the License. |
|
// You may obtain a copy of the License at |
|
// |
|
// http://www.apache.org/licenses/LICENSE-2.0 |
|
// |
|
// Unless required by applicable law or agreed to in writing, software |
|
// distributed under the License is distributed on an "AS IS" BASIS, |
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
|
// See the License for the specific language governing permissions and |
|
// limitations under the License. |
|
|
|
package format |
|
|
|
import ( |
|
"github.com/prometheus/prometheus/model" |
|
"io" |
|
"time" |
|
) |
|
|
|
// Processor is responsible for decoding the actual message responses from |
|
// stream into a format that can be consumed with the end result written |
|
// to the results channel. |
|
type Processor interface { |
|
// Process performs the work on the input and closes the incoming stream. |
|
Process(stream io.ReadCloser, timestamp time.Time, baseLabels model.LabelSet, results chan Result) (err error) |
|
} |
|
|
|
// The ProcessorFunc type allows the use of ordinary functions for processors. |
|
type ProcessorFunc func(io.ReadCloser, time.Time, model.LabelSet, chan Result) error |
|
|
|
func (f ProcessorFunc) Process(stream io.ReadCloser, timestamp time.Time, baseLabels model.LabelSet, results chan Result) error { |
|
return f(stream, timestamp, baseLabels, results) |
|
} |
|
|
|
// Helper function to convert map[string]string into model.LabelSet. |
|
// |
|
// NOTE: This should be deleted when support for go 1.0.3 is removed; 1.1 is |
|
// smart enough to unmarshal JSON objects into model.LabelSet directly. |
|
func LabelSet(labels map[string]string) model.LabelSet { |
|
labelset := make(model.LabelSet, len(labels)) |
|
|
|
for k, v := range labels { |
|
labelset[model.LabelName(k)] = model.LabelValue(v) |
|
} |
|
|
|
return labelset |
|
} |
|
|
|
// Helper function to merge a target's base labels ontop of the labels of an |
|
// exported sample. If a label is already defined in the exported sample, we |
|
// assume that we are scraping an intermediate exporter and attach |
|
// "exporter_"-prefixes to Prometheus' own base labels. |
|
func mergeTargetLabels(entityLabels, targetLabels model.LabelSet) model.LabelSet { |
|
result := model.LabelSet{} |
|
|
|
for label, value := range entityLabels { |
|
result[label] = value |
|
} |
|
|
|
for label, labelValue := range targetLabels { |
|
if _, exists := result[label]; exists { |
|
result[model.ExporterLabelPrefix+label] = labelValue |
|
} else { |
|
result[label] = labelValue |
|
} |
|
} |
|
return result |
|
}
|
|
|