prometheus/storage/remote/read_test.go

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// Copyright 2017 The Prometheus Authors
// 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 remote
import (
"context"
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"reflect"
"sort"
"testing"
"github.com/prometheus/prometheus/pkg/labels"
"github.com/prometheus/prometheus/prompb"
"github.com/prometheus/prometheus/storage"
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)
func mustNewLabelMatcher(mt labels.MatchType, name, val string) *labels.Matcher {
m, err := labels.NewMatcher(mt, name, val)
if err != nil {
panic(err)
}
return m
}
func TestExternalLabelsQuerierSelect(t *testing.T) {
matchers := []*labels.Matcher{
mustNewLabelMatcher(labels.MatchEqual, "job", "api-server"),
}
q := &externalLabelsQuerier{
Querier: mockQuerier{},
externalLabels: labels.Labels{
{Name: "region", Value: "europe"},
},
}
want := newSeriesSetFilter(mockSeriesSet{}, q.externalLabels)
have, _, err := q.Select(nil, matchers...)
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if err != nil {
t.Error(err)
}
if !reflect.DeepEqual(want, have) {
t.Errorf("expected series set %+v, got %+v", want, have)
}
}
func TestExternalLabelsQuerierAddExternalLabels(t *testing.T) {
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tests := []struct {
el labels.Labels
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inMatchers []*labels.Matcher
outMatchers []*labels.Matcher
added labels.Labels
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}{
{
inMatchers: []*labels.Matcher{
mustNewLabelMatcher(labels.MatchEqual, "job", "api-server"),
},
outMatchers: []*labels.Matcher{
mustNewLabelMatcher(labels.MatchEqual, "job", "api-server"),
},
added: labels.Labels{},
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},
{
el: labels.Labels{
{Name: "dc", Value: "berlin-01"},
{Name: "region", Value: "europe"},
},
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inMatchers: []*labels.Matcher{
mustNewLabelMatcher(labels.MatchEqual, "job", "api-server"),
},
outMatchers: []*labels.Matcher{
mustNewLabelMatcher(labels.MatchEqual, "job", "api-server"),
mustNewLabelMatcher(labels.MatchEqual, "region", "europe"),
mustNewLabelMatcher(labels.MatchEqual, "dc", "berlin-01"),
},
added: labels.Labels{
{Name: "dc", Value: "berlin-01"},
{Name: "region", Value: "europe"},
},
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},
{
el: labels.Labels{
{Name: "region", Value: "europe"},
{Name: "dc", Value: "berlin-01"},
},
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inMatchers: []*labels.Matcher{
mustNewLabelMatcher(labels.MatchEqual, "job", "api-server"),
mustNewLabelMatcher(labels.MatchEqual, "dc", "munich-02"),
},
outMatchers: []*labels.Matcher{
mustNewLabelMatcher(labels.MatchEqual, "job", "api-server"),
mustNewLabelMatcher(labels.MatchEqual, "region", "europe"),
mustNewLabelMatcher(labels.MatchEqual, "dc", "munich-02"),
},
added: labels.Labels{
{Name: "region", Value: "europe"},
},
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},
}
for i, test := range tests {
q := &externalLabelsQuerier{Querier: mockQuerier{}, externalLabels: test.el}
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matchers, added := q.addExternalLabels(test.inMatchers)
sort.Slice(test.outMatchers, func(i, j int) bool { return test.outMatchers[i].Name < test.outMatchers[j].Name })
sort.Slice(matchers, func(i, j int) bool { return matchers[i].Name < matchers[j].Name })
if !reflect.DeepEqual(matchers, test.outMatchers) {
t.Fatalf("%d. unexpected matchers; want %v, got %v", i, test.outMatchers, matchers)
}
if !reflect.DeepEqual(added, test.added) {
t.Fatalf("%d. unexpected added labels; want %v, got %v", i, test.added, added)
}
}
}
func TestSeriesSetFilter(t *testing.T) {
tests := []struct {
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in *prompb.QueryResult
toRemove labels.Labels
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expected *prompb.QueryResult
}{
{
toRemove: labels.Labels{{Name: "foo", Value: "bar"}},
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in: &prompb.QueryResult{
Timeseries: []*prompb.TimeSeries{
{Labels: labelsToLabelsProto(labels.FromStrings("foo", "bar", "a", "b"), nil), Samples: []prompb.Sample{}},
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},
},
expected: &prompb.QueryResult{
Timeseries: []*prompb.TimeSeries{
{Labels: labelsToLabelsProto(labels.FromStrings("a", "b"), nil), Samples: []prompb.Sample{}},
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},
},
},
}
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for i, tc := range tests {
filtered := newSeriesSetFilter(FromQueryResult(tc.in), tc.toRemove)
have, err := ToQueryResult(filtered, 1e6)
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if err != nil {
t.Fatal(err)
}
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if !reflect.DeepEqual(have, tc.expected) {
t.Fatalf("%d. unexpected labels; want %v, got %v", i, tc.expected, have)
}
}
}
type mockQuerier struct {
ctx context.Context
mint, maxt int64
storage.Querier
}
type mockSeriesSet struct {
storage.SeriesSet
}
func (mockQuerier) Select(*storage.SelectParams, ...*labels.Matcher) (storage.SeriesSet, storage.Warnings, error) {
return mockSeriesSet{}, nil, nil
}
func TestPreferLocalStorageFilter(t *testing.T) {
ctx := context.Background()
tests := []struct {
localStartTime int64
mint int64
maxt int64
querier storage.Querier
}{
{
localStartTime: int64(100),
mint: int64(0),
maxt: int64(50),
querier: mockQuerier{ctx: ctx, mint: 0, maxt: 50},
},
{
localStartTime: int64(20),
mint: int64(0),
maxt: int64(50),
querier: mockQuerier{ctx: ctx, mint: 0, maxt: 20},
},
{
localStartTime: int64(20),
mint: int64(30),
maxt: int64(50),
querier: storage.NoopQuerier(),
},
}
for i, test := range tests {
f := PreferLocalStorageFilter(
storage.QueryableFunc(func(ctx context.Context, mint, maxt int64) (storage.Querier, error) {
return mockQuerier{ctx: ctx, mint: mint, maxt: maxt}, nil
}),
func() (int64, error) { return test.localStartTime, nil },
)
q, err := f.Querier(ctx, test.mint, test.maxt)
if err != nil {
t.Fatal(err)
}
if test.querier != q {
t.Errorf("%d. expected quierer %+v, got %+v", i, test.querier, q)
}
}
}
func TestRequiredMatchersFilter(t *testing.T) {
ctx := context.Background()
f := RequiredMatchersFilter(
storage.QueryableFunc(func(ctx context.Context, mint, maxt int64) (storage.Querier, error) {
return mockQuerier{ctx: ctx, mint: mint, maxt: maxt}, nil
}),
[]*labels.Matcher{mustNewLabelMatcher(labels.MatchEqual, "special", "label")},
)
want := &requiredMatchersQuerier{
Querier: mockQuerier{ctx: ctx, mint: 0, maxt: 50},
requiredMatchers: []*labels.Matcher{mustNewLabelMatcher(labels.MatchEqual, "special", "label")},
}
have, err := f.Querier(ctx, 0, 50)
if err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(want, have) {
t.Errorf("expected quierer %+v, got %+v", want, have)
}
}
func TestRequiredLabelsQuerierSelect(t *testing.T) {
tests := []struct {
requiredMatchers []*labels.Matcher
matchers []*labels.Matcher
seriesSet storage.SeriesSet
}{
{
requiredMatchers: []*labels.Matcher{},
matchers: []*labels.Matcher{
mustNewLabelMatcher(labels.MatchEqual, "special", "label"),
},
seriesSet: mockSeriesSet{},
},
{
requiredMatchers: []*labels.Matcher{
mustNewLabelMatcher(labels.MatchEqual, "special", "label"),
},
matchers: []*labels.Matcher{
mustNewLabelMatcher(labels.MatchEqual, "special", "label"),
},
seriesSet: mockSeriesSet{},
},
{
requiredMatchers: []*labels.Matcher{
mustNewLabelMatcher(labels.MatchEqual, "special", "label"),
},
matchers: []*labels.Matcher{
mustNewLabelMatcher(labels.MatchRegexp, "special", "label"),
},
seriesSet: storage.NoopSeriesSet(),
},
{
requiredMatchers: []*labels.Matcher{
mustNewLabelMatcher(labels.MatchEqual, "special", "label"),
},
matchers: []*labels.Matcher{
mustNewLabelMatcher(labels.MatchEqual, "special", "different"),
},
seriesSet: storage.NoopSeriesSet(),
},
{
requiredMatchers: []*labels.Matcher{
mustNewLabelMatcher(labels.MatchEqual, "special", "label"),
},
matchers: []*labels.Matcher{
mustNewLabelMatcher(labels.MatchEqual, "special", "label"),
mustNewLabelMatcher(labels.MatchEqual, "foo", "bar"),
},
seriesSet: mockSeriesSet{},
},
{
requiredMatchers: []*labels.Matcher{
mustNewLabelMatcher(labels.MatchEqual, "special", "label"),
mustNewLabelMatcher(labels.MatchEqual, "foo", "bar"),
},
matchers: []*labels.Matcher{
mustNewLabelMatcher(labels.MatchEqual, "special", "label"),
mustNewLabelMatcher(labels.MatchEqual, "foo", "baz"),
},
seriesSet: storage.NoopSeriesSet(),
},
{
requiredMatchers: []*labels.Matcher{
mustNewLabelMatcher(labels.MatchEqual, "special", "label"),
mustNewLabelMatcher(labels.MatchEqual, "foo", "bar"),
},
matchers: []*labels.Matcher{
mustNewLabelMatcher(labels.MatchEqual, "special", "label"),
mustNewLabelMatcher(labels.MatchEqual, "foo", "bar"),
},
seriesSet: mockSeriesSet{},
},
}
for i, test := range tests {
q := &requiredMatchersQuerier{
Querier: mockQuerier{},
requiredMatchers: test.requiredMatchers,
}
have, _, err := q.Select(nil, test.matchers...)
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if err != nil {
t.Error(err)
}
if want := test.seriesSet; want != have {
t.Errorf("%d. expected series set %+v, got %+v", i, want, have)
}
if want, have := test.requiredMatchers, q.requiredMatchers; !reflect.DeepEqual(want, have) {
t.Errorf("%d. requiredMatchersQuerier.Select() has modified the matchers", i)
}
}
}