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5a896033e3
* Add remote read external label handling This implements rule 1 and 2 from https://docs.google.com/document/d/188YauRgfF0J4CYMigLsVNN34V_kUwKnApBs2dQMfBbs/edit * Use more descriptive example labels in read test * Add comment for querier.addExternalLabels() * Make argument naming in removeLabels() more generic
95 lines
2.9 KiB
Go
95 lines
2.9 KiB
Go
// Copyright 2017 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 remote
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import (
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"reflect"
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"sort"
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"testing"
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"github.com/prometheus/common/model"
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"github.com/prometheus/prometheus/storage/metric"
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)
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func mustNewLabelMatcher(mt metric.MatchType, name model.LabelName, val model.LabelValue) *metric.LabelMatcher {
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m, err := metric.NewLabelMatcher(mt, name, val)
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if err != nil {
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panic(err)
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}
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return m
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}
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func TestAddExternalLabels(t *testing.T) {
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tests := []struct {
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el model.LabelSet
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inMatchers metric.LabelMatchers
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outMatchers metric.LabelMatchers
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added model.LabelSet
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}{
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{
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el: model.LabelSet{},
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inMatchers: metric.LabelMatchers{
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mustNewLabelMatcher(metric.Equal, "job", "api-server"),
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},
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outMatchers: metric.LabelMatchers{
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mustNewLabelMatcher(metric.Equal, "job", "api-server"),
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},
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added: model.LabelSet{},
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},
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{
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el: model.LabelSet{"region": "europe", "dc": "berlin-01"},
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inMatchers: metric.LabelMatchers{
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mustNewLabelMatcher(metric.Equal, "job", "api-server"),
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},
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outMatchers: metric.LabelMatchers{
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mustNewLabelMatcher(metric.Equal, "job", "api-server"),
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mustNewLabelMatcher(metric.Equal, "region", "europe"),
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mustNewLabelMatcher(metric.Equal, "dc", "berlin-01"),
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},
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added: model.LabelSet{"region": "europe", "dc": "berlin-01"},
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},
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{
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el: model.LabelSet{"region": "europe", "dc": "berlin-01"},
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inMatchers: metric.LabelMatchers{
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mustNewLabelMatcher(metric.Equal, "job", "api-server"),
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mustNewLabelMatcher(metric.Equal, "dc", "munich-02"),
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},
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outMatchers: metric.LabelMatchers{
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mustNewLabelMatcher(metric.Equal, "job", "api-server"),
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mustNewLabelMatcher(metric.Equal, "region", "europe"),
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mustNewLabelMatcher(metric.Equal, "dc", "munich-02"),
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},
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added: model.LabelSet{"region": "europe"},
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},
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}
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for i, test := range tests {
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q := querier{
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externalLabels: test.el,
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}
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matchers, added := q.addExternalLabels(test.inMatchers)
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sort.Slice(test.outMatchers, func(i, j int) bool { return test.outMatchers[i].Name < test.outMatchers[j].Name })
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sort.Slice(matchers, func(i, j int) bool { return matchers[i].Name < matchers[j].Name })
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if !reflect.DeepEqual(matchers, test.outMatchers) {
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t.Fatalf("%d. unexpected matchers; want %v, got %v", i, test.outMatchers, matchers)
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}
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if !reflect.DeepEqual(added, test.added) {
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t.Fatalf("%d. unexpected added labels; want %v, got %v", i, test.added, added)
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}
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}
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}
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