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c187308366
This is based on https://github.com/prometheus/prometheus/pull/1997. This adds contexts to the relevant Storage methods and already passes PromQL's new per-query context into the storage's query methods. The immediate motivation supporting multi-tenancy in Frankenstein, but this could also be used by Prometheus's normal local storage to support cancellations and timeouts at some point.
90 lines
2.6 KiB
Go
90 lines
2.6 KiB
Go
// Copyright 2013 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 rules
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import (
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"reflect"
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"testing"
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"github.com/prometheus/common/model"
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"golang.org/x/net/context"
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"github.com/prometheus/prometheus/promql"
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"github.com/prometheus/prometheus/storage/local"
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)
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func TestRuleEval(t *testing.T) {
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storage, closer := local.NewTestStorage(t, 2)
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defer closer.Close()
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engine := promql.NewEngine(storage, nil)
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ctx, cancelCtx := context.WithCancel(context.Background())
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defer cancelCtx()
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now := model.Now()
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suite := []struct {
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name string
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expr promql.Expr
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labels model.LabelSet
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result model.Vector
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}{
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{
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name: "nolabels",
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expr: &promql.NumberLiteral{Val: 1},
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labels: model.LabelSet{},
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result: model.Vector{&model.Sample{
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Value: 1,
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Timestamp: now,
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Metric: model.Metric{"__name__": "nolabels"},
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}},
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},
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{
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name: "labels",
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expr: &promql.NumberLiteral{Val: 1},
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labels: model.LabelSet{"foo": "bar"},
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result: model.Vector{&model.Sample{
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Value: 1,
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Timestamp: now,
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Metric: model.Metric{"__name__": "labels", "foo": "bar"},
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}},
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},
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}
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for _, test := range suite {
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rule := NewRecordingRule(test.name, test.expr, test.labels)
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result, err := rule.eval(ctx, now, engine, "")
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if err != nil {
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t.Fatalf("Error evaluating %s", test.name)
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}
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if !reflect.DeepEqual(result, test.result) {
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t.Fatalf("Error: expected %q, got %q", test.result, result)
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}
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}
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}
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func TestRecordingRuleHTMLSnippet(t *testing.T) {
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expr, err := promql.ParseExpr(`foo{html="<b>BOLD<b>"}`)
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if err != nil {
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t.Fatal(err)
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}
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rule := NewRecordingRule("testrule", expr, model.LabelSet{"html": "<b>BOLD</b>"})
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const want = `<a href="/test/prefix/graph?g0.expr=testrule&g0.tab=0">testrule</a>{html="<b>BOLD</b>"} = <a href="/test/prefix/graph?g0.expr=foo%7Bhtml%3D%22%3Cb%3EBOLD%3Cb%3E%22%7D&g0.tab=0">foo{html="<b>BOLD<b>"}</a>`
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got := rule.HTMLSnippet("/test/prefix")
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if got != want {
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t.Fatalf("incorrect HTML snippet; want:\n\n%s\n\ngot:\n\n%s", want, got)
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}
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}
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