prometheus/rules/helpers_test.go

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// 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 rules
import (
"github.com/prometheus/prometheus/model"
"github.com/prometheus/prometheus/rules/ast"
"github.com/prometheus/prometheus/storage/metric"
"time"
)
var testSampleInterval = time.Duration(5) * time.Minute
var testStartTime = time.Time{}
func getTestValueStream(startVal model.SampleValue, endVal model.SampleValue, stepVal model.SampleValue, startTime time.Time) (resultValues model.Values) {
currentTime := startTime
for currentVal := startVal; currentVal <= endVal; currentVal += stepVal {
sample := model.SamplePair{
Value: currentVal,
Timestamp: currentTime,
}
resultValues = append(resultValues, sample)
currentTime = currentTime.Add(testSampleInterval)
}
return resultValues
}
func getTestVectorFromTestMatrix(matrix ast.Matrix) ast.Vector {
vector := ast.Vector{}
for _, sampleSet := range matrix {
lastSample := sampleSet.Values[len(sampleSet.Values)-1]
vector = append(vector, model.Sample{
Metric: sampleSet.Metric,
Value: lastSample.Value,
Timestamp: lastSample.Timestamp,
})
}
return vector
}
func storeMatrix(storage metric.TieredStorage, matrix ast.Matrix) (err error) {
pendingSamples := model.Samples{}
for _, sampleSet := range matrix {
for _, sample := range sampleSet.Values {
pendingSamples = append(pendingSamples, model.Sample{
Metric: sampleSet.Metric,
Value: sample.Value,
Timestamp: sample.Timestamp,
})
}
}
err = storage.AppendSamples(pendingSamples)
return
}
var testMatrix = ast.Matrix{
{
Metric: model.Metric{
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model.MetricNameLabel: "http_requests",
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model.JobLabel: "api-server",
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"instance": "0",
"group": "production",
},
Values: getTestValueStream(0, 100, 10, testStartTime),
},
{
Metric: model.Metric{
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model.MetricNameLabel: "http_requests",
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model.JobLabel: "api-server",
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"instance": "1",
"group": "production",
},
Values: getTestValueStream(0, 200, 20, testStartTime),
},
{
Metric: model.Metric{
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model.MetricNameLabel: "http_requests",
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model.JobLabel: "api-server",
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"instance": "0",
"group": "canary",
},
Values: getTestValueStream(0, 300, 30, testStartTime),
},
{
Metric: model.Metric{
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model.MetricNameLabel: "http_requests",
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model.JobLabel: "api-server",
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"instance": "1",
"group": "canary",
},
Values: getTestValueStream(0, 400, 40, testStartTime),
},
{
Metric: model.Metric{
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model.MetricNameLabel: "http_requests",
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model.JobLabel: "app-server",
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"instance": "0",
"group": "production",
},
Values: getTestValueStream(0, 500, 50, testStartTime),
},
{
Metric: model.Metric{
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model.MetricNameLabel: "http_requests",
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model.JobLabel: "app-server",
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"instance": "1",
"group": "production",
},
Values: getTestValueStream(0, 600, 60, testStartTime),
},
{
Metric: model.Metric{
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model.MetricNameLabel: "http_requests",
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model.JobLabel: "app-server",
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"instance": "0",
"group": "canary",
},
Values: getTestValueStream(0, 700, 70, testStartTime),
},
{
Metric: model.Metric{
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model.MetricNameLabel: "http_requests",
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model.JobLabel: "app-server",
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"instance": "1",
"group": "canary",
},
Values: getTestValueStream(0, 800, 80, testStartTime),
},
// Single-letter metric and label names.
{
Metric: model.Metric{
model.MetricNameLabel: "x",
"y": "testvalue",
},
Values: getTestValueStream(0, 100, 10, testStartTime),
},
// Counter reset in the middle of range.
{
Metric: model.Metric{
model.MetricNameLabel: "testcounter_reset_middle",
},
Values: append(getTestValueStream(0, 40, 10, testStartTime), getTestValueStream(0, 50, 10, testStartTime.Add(testSampleInterval*5))...),
},
// Counter reset at the end of range.
{
Metric: model.Metric{
model.MetricNameLabel: "testcounter_reset_end",
},
Values: append(getTestValueStream(0, 90, 10, testStartTime), getTestValueStream(0, 0, 10, testStartTime.Add(testSampleInterval*10))...),
},
}
var testVector = getTestVectorFromTestMatrix(testMatrix)