mirror of https://github.com/prometheus/prometheus
Peter Štibraný
2 years ago
commit
cf7aeb59a7
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// Copyright 2022 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 v1
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import (
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"context"
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"fmt"
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"net/http"
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"net/http/httptest"
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"net/url"
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"testing"
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"time"
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"github.com/go-kit/log"
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"github.com/grafana/regexp"
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"github.com/pkg/errors"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/common/route"
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"github.com/stretchr/testify/require"
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"github.com/prometheus/prometheus/config"
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"github.com/prometheus/prometheus/model/labels"
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"github.com/prometheus/prometheus/promql"
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"github.com/prometheus/prometheus/rules"
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"github.com/prometheus/prometheus/scrape"
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"github.com/prometheus/prometheus/storage"
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)
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func TestApiStatusCodes(t *testing.T) {
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for name, tc := range map[string]struct {
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err error
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expectedString string
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expectedCode int
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}{
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"random error": {
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err: errors.New("some random error"),
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expectedString: "some random error",
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expectedCode: http.StatusUnprocessableEntity,
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},
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"promql.ErrTooManySamples": {
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err: promql.ErrTooManySamples("some error"),
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expectedString: "too many samples",
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expectedCode: http.StatusUnprocessableEntity,
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},
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"promql.ErrQueryCanceled": {
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err: promql.ErrQueryCanceled("some error"),
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expectedString: "query was canceled",
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expectedCode: http.StatusServiceUnavailable,
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},
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"promql.ErrQueryTimeout": {
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err: promql.ErrQueryTimeout("some error"),
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expectedString: "query timed out",
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expectedCode: http.StatusServiceUnavailable,
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},
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"context.DeadlineExceeded": {
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err: context.DeadlineExceeded,
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expectedString: "context deadline exceeded",
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expectedCode: http.StatusUnprocessableEntity,
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},
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"context.Canceled": {
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err: context.Canceled,
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expectedString: "context canceled",
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expectedCode: http.StatusUnprocessableEntity,
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},
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} {
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for k, q := range map[string]storage.SampleAndChunkQueryable{
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"error from queryable": errorTestQueryable{err: tc.err},
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"error from querier": errorTestQueryable{q: errorTestQuerier{err: tc.err}},
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"error from seriesset": errorTestQueryable{q: errorTestQuerier{s: errorTestSeriesSet{err: tc.err}}},
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} {
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t.Run(fmt.Sprintf("%s/%s", name, k), func(t *testing.T) {
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r := createPrometheusAPI(q)
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rec := httptest.NewRecorder()
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req := httptest.NewRequest("GET", "/api/v1/query?query=up", nil)
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r.ServeHTTP(rec, req)
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require.Equal(t, tc.expectedCode, rec.Code)
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require.Contains(t, rec.Body.String(), tc.expectedString)
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})
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}
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}
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}
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func createPrometheusAPI(q storage.SampleAndChunkQueryable) *route.Router {
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engine := promql.NewEngine(promql.EngineOpts{
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Logger: log.NewNopLogger(),
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Reg: nil,
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ActiveQueryTracker: nil,
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MaxSamples: 100,
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Timeout: 5 * time.Second,
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})
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api := NewAPI(
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engine,
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q,
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nil,
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nil,
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func(context.Context) TargetRetriever { return &DummyTargetRetriever{} },
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func(context.Context) AlertmanagerRetriever { return &DummyAlertmanagerRetriever{} },
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func() config.Config { return config.Config{} },
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map[string]string{}, // TODO: include configuration flags
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GlobalURLOptions{},
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func(f http.HandlerFunc) http.HandlerFunc { return f },
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nil, // Only needed for admin APIs.
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"", // This is for snapshots, which is disabled when admin APIs are disabled. Hence empty.
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false, // Disable admin APIs.
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log.NewNopLogger(),
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func(context.Context) RulesRetriever { return &DummyRulesRetriever{} },
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0, 0, 0, // Remote read samples and concurrency limit.
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false, // Not an agent.
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regexp.MustCompile(".*"),
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func() (RuntimeInfo, error) { return RuntimeInfo{}, errors.New("not implemented") },
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&PrometheusVersion{},
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prometheus.DefaultGatherer,
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nil,
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nil,
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)
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promRouter := route.New().WithPrefix("/api/v1")
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api.Register(promRouter)
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return promRouter
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}
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type errorTestQueryable struct {
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q storage.Querier
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err error
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}
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func (t errorTestQueryable) ChunkQuerier(ctx context.Context, mint, maxt int64) (storage.ChunkQuerier, error) {
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return nil, t.err
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}
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func (t errorTestQueryable) Querier(ctx context.Context, mint, maxt int64) (storage.Querier, error) {
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if t.q != nil {
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return t.q, nil
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}
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return nil, t.err
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}
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type errorTestQuerier struct {
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s storage.SeriesSet
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err error
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}
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func (t errorTestQuerier) LabelValues(name string, matchers ...*labels.Matcher) ([]string, storage.Warnings, error) {
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return nil, nil, t.err
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}
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func (t errorTestQuerier) LabelNames(matchers ...*labels.Matcher) ([]string, storage.Warnings, error) {
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return nil, nil, t.err
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}
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func (t errorTestQuerier) Close() error {
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return nil
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}
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func (t errorTestQuerier) Select(sortSeries bool, hints *storage.SelectHints, matchers ...*labels.Matcher) storage.SeriesSet {
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if t.s != nil {
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return t.s
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}
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return storage.ErrSeriesSet(t.err)
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}
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type errorTestSeriesSet struct {
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err error
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}
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func (t errorTestSeriesSet) Next() bool {
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return false
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}
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func (t errorTestSeriesSet) At() storage.Series {
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return nil
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}
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func (t errorTestSeriesSet) Err() error {
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return t.err
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}
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func (t errorTestSeriesSet) Warnings() storage.Warnings {
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return nil
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}
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// DummyTargetRetriever implements github.com/prometheus/prometheus/web/api/v1.targetRetriever.
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type DummyTargetRetriever struct{}
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// TargetsActive implements targetRetriever.
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func (DummyTargetRetriever) TargetsActive() map[string][]*scrape.Target {
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return map[string][]*scrape.Target{}
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}
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// TargetsDropped implements targetRetriever.
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func (DummyTargetRetriever) TargetsDropped() map[string][]*scrape.Target {
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return map[string][]*scrape.Target{}
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}
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// DummyAlertmanagerRetriever implements AlertmanagerRetriever.
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type DummyAlertmanagerRetriever struct{}
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// Alertmanagers implements AlertmanagerRetriever.
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func (DummyAlertmanagerRetriever) Alertmanagers() []*url.URL { return nil }
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// DroppedAlertmanagers implements AlertmanagerRetriever.
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func (DummyAlertmanagerRetriever) DroppedAlertmanagers() []*url.URL { return nil }
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// DummyRulesRetriever implements RulesRetriever.
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type DummyRulesRetriever struct{}
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// RuleGroups implements RulesRetriever.
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func (DummyRulesRetriever) RuleGroups() []*rules.Group {
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return nil
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}
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// AlertingRules implements RulesRetriever.
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func (DummyRulesRetriever) AlertingRules() []*rules.AlertingRule {
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return nil
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}
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@ -0,0 +1,33 @@
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// Copyright 2022 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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import {styleTags, tags} from "@lezer/highlight";
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export const promQLHighLight = styleTags({
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LineComment: tags.comment,
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LabelName: tags.labelName,
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StringLiteral: tags.string,
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NumberLiteral: tags.number,
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Duration: tags.number,
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'Abs Absent AbsentOverTime Acos Acosh Asin Asinh Atan Atanh AvgOverTime Ceil Changes Clamp ClampMax ClampMin Cos Cosh CountOverTime DaysInMonth DayOfMonth DayOfWeek DayOfYear Deg Delta Deriv Exp Floor HistogramQuantile HoltWinters Hour Idelta Increase Irate LabelReplace LabelJoin LastOverTime Ln Log10 Log2 MaxOverTime MinOverTime Minute Month Pi PredictLinear PresentOverTime QuantileOverTime Rad Rate Resets Round Scalar Sgn Sin Sinh Sort SortDesc Sqrt StddevOverTime StdvarOverTime SumOverTime Tan Tanh Time Timestamp Vector Year':
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tags.function(tags.variableName),
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'Avg Bottomk Count Count_values Group Max Min Quantile Stddev Stdvar Sum Topk': tags.operatorKeyword,
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'By Without Bool On Ignoring GroupLeft GroupRight Offset Start End': tags.modifier,
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'And Unless Or': tags.logicOperator,
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'Sub Add Mul Mod Div Atan2 Eql Neq Lte Lss Gte Gtr EqlRegex EqlSingle NeqRegex Pow At': tags.operator,
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UnaryOp: tags.arithmeticOperator,
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'( )': tags.paren,
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'[ ]': tags.squareBracket,
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'{ }': tags.brace,
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'⚠': tags.invalid,
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})
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