mirror of
https://github.com/prometheus/prometheus.git
synced 2024-12-26 06:04:05 -08:00
299 lines
9 KiB
Go
299 lines
9 KiB
Go
// Copyright 2024 Prometheus Team
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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 rwcommon
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import (
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"testing"
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"github.com/prometheus/common/model"
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"github.com/stretchr/testify/require"
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"github.com/prometheus/prometheus/model/histogram"
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"github.com/prometheus/prometheus/model/labels"
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"github.com/prometheus/prometheus/model/metadata"
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"github.com/prometheus/prometheus/prompb"
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writev2 "github.com/prometheus/prometheus/prompb/io/prometheus/write/v2"
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)
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func TestToLabels(t *testing.T) {
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expected := labels.FromStrings("__name__", "metric1", "foo", "bar")
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t.Run("v1", func(t *testing.T) {
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ts := prompb.TimeSeries{Labels: []prompb.Label{{Name: "__name__", Value: "metric1"}, {Name: "foo", Value: "bar"}}}
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b := labels.NewScratchBuilder(2)
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require.Equal(t, expected, ts.ToLabels(&b, nil))
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require.Equal(t, ts.Labels, prompb.FromLabels(expected, nil))
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require.Equal(t, ts.Labels, prompb.FromLabels(expected, ts.Labels))
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})
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t.Run("v2", func(t *testing.T) {
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v2Symbols := []string{"", "__name__", "metric1", "foo", "bar"}
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ts := writev2.TimeSeries{LabelsRefs: []uint32{1, 2, 3, 4}}
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b := labels.NewScratchBuilder(2)
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require.Equal(t, expected, ts.ToLabels(&b, v2Symbols))
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// No need for FromLabels in our prod code as we use symbol table to do so.
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})
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}
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func TestFromMetadataType(t *testing.T) {
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for _, tc := range []struct {
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desc string
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input model.MetricType
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expectedV1 prompb.MetricMetadata_MetricType
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expectedV2 writev2.Metadata_MetricType
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}{
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{
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desc: "with a single-word metric",
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input: model.MetricTypeCounter,
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expectedV1: prompb.MetricMetadata_COUNTER,
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expectedV2: writev2.Metadata_METRIC_TYPE_COUNTER,
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},
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{
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desc: "with a two-word metric",
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input: model.MetricTypeStateset,
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expectedV1: prompb.MetricMetadata_STATESET,
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expectedV2: writev2.Metadata_METRIC_TYPE_STATESET,
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},
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{
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desc: "with an unknown metric",
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input: "not-known",
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expectedV1: prompb.MetricMetadata_UNKNOWN,
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expectedV2: writev2.Metadata_METRIC_TYPE_UNSPECIFIED,
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},
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} {
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t.Run(tc.desc, func(t *testing.T) {
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t.Run("v1", func(t *testing.T) {
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require.Equal(t, tc.expectedV1, prompb.FromMetadataType(tc.input))
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})
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t.Run("v2", func(t *testing.T) {
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require.Equal(t, tc.expectedV2, writev2.FromMetadataType(tc.input))
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})
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})
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}
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}
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func TestToMetadata(t *testing.T) {
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sym := writev2.NewSymbolTable()
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for _, tc := range []struct {
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input writev2.Metadata
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expected metadata.Metadata
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}{
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{
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input: writev2.Metadata{},
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expected: metadata.Metadata{
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Type: model.MetricTypeUnknown,
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},
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},
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{
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input: writev2.Metadata{
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Type: 12414, // Unknown.
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},
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expected: metadata.Metadata{
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Type: model.MetricTypeUnknown,
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},
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},
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{
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input: writev2.Metadata{
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Type: writev2.Metadata_METRIC_TYPE_COUNTER,
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HelpRef: sym.Symbolize("help1"),
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UnitRef: sym.Symbolize("unit1"),
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},
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expected: metadata.Metadata{
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Type: model.MetricTypeCounter,
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Help: "help1",
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Unit: "unit1",
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},
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},
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{
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input: writev2.Metadata{
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Type: writev2.Metadata_METRIC_TYPE_STATESET,
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HelpRef: sym.Symbolize("help2"),
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},
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expected: metadata.Metadata{
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Type: model.MetricTypeStateset,
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Help: "help2",
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},
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},
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} {
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t.Run("", func(t *testing.T) {
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ts := writev2.TimeSeries{Metadata: tc.input}
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require.Equal(t, tc.expected, ts.ToMetadata(sym.Symbols()))
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})
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}
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}
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func TestToHistogram_Empty(t *testing.T) {
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t.Run("v1", func(t *testing.T) {
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require.NotNilf(t, prompb.Histogram{}.ToIntHistogram(), "")
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require.NotNilf(t, prompb.Histogram{}.ToFloatHistogram(), "")
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})
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t.Run("v2", func(t *testing.T) {
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require.NotNilf(t, writev2.Histogram{}.ToIntHistogram(), "")
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require.NotNilf(t, writev2.Histogram{}.ToFloatHistogram(), "")
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})
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}
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// NOTE(bwplotka): This is technically not a valid histogram, but it represents
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// important cases to test when copying or converting to/from int/float histograms.
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func testIntHistogram() histogram.Histogram {
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return histogram.Histogram{
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CounterResetHint: histogram.GaugeType,
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Schema: 1,
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Count: 19,
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Sum: 2.7,
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ZeroThreshold: 1e-128,
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PositiveSpans: []histogram.Span{
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{Offset: 0, Length: 4},
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{Offset: 0, Length: 0},
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{Offset: 0, Length: 3},
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},
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PositiveBuckets: []int64{1, 2, -2, 1, -1, 0, 0},
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NegativeSpans: []histogram.Span{
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{Offset: 0, Length: 5},
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{Offset: 1, Length: 0},
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{Offset: 0, Length: 1},
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},
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NegativeBuckets: []int64{1, 2, -2, 1, -1, 0},
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CustomValues: []float64{21421, 523},
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}
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}
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// NOTE(bwplotka): This is technically not a valid histogram, but it represents
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// important cases to test when copying or converting to/from int/float histograms.
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func testFloatHistogram() histogram.FloatHistogram {
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return histogram.FloatHistogram{
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CounterResetHint: histogram.GaugeType,
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Schema: 1,
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Count: 19,
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Sum: 2.7,
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ZeroThreshold: 1e-128,
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PositiveSpans: []histogram.Span{
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{Offset: 0, Length: 4},
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{Offset: 0, Length: 0},
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{Offset: 0, Length: 3},
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},
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PositiveBuckets: []float64{1, 3, 1, 2, 1, 1, 1},
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NegativeSpans: []histogram.Span{
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{Offset: 0, Length: 5},
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{Offset: 1, Length: 0},
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{Offset: 0, Length: 1},
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},
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NegativeBuckets: []float64{1, 3, 1, 2, 1, 1},
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CustomValues: []float64{21421, 523},
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}
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}
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func TestFromIntToFloatOrIntHistogram(t *testing.T) {
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t.Run("v1", func(t *testing.T) {
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// v1 does not support nhcb.
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testIntHistWithoutNHCB := testIntHistogram()
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testIntHistWithoutNHCB.CustomValues = nil
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testFloatHistWithoutNHCB := testFloatHistogram()
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testFloatHistWithoutNHCB.CustomValues = nil
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h := prompb.FromIntHistogram(123, &testIntHistWithoutNHCB)
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require.False(t, h.IsFloatHistogram())
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require.Equal(t, int64(123), h.Timestamp)
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require.Equal(t, testIntHistWithoutNHCB, *h.ToIntHistogram())
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require.Equal(t, testFloatHistWithoutNHCB, *h.ToFloatHistogram())
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})
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t.Run("v2", func(t *testing.T) {
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testIntHist := testIntHistogram()
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testFloatHist := testFloatHistogram()
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h := writev2.FromIntHistogram(123, &testIntHist)
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require.False(t, h.IsFloatHistogram())
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require.Equal(t, int64(123), h.Timestamp)
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require.Equal(t, testIntHist, *h.ToIntHistogram())
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require.Equal(t, testFloatHist, *h.ToFloatHistogram())
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})
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}
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func TestFromFloatToFloatHistogram(t *testing.T) {
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t.Run("v1", func(t *testing.T) {
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// v1 does not support nhcb.
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testFloatHistWithoutNHCB := testFloatHistogram()
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testFloatHistWithoutNHCB.CustomValues = nil
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h := prompb.FromFloatHistogram(123, &testFloatHistWithoutNHCB)
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require.True(t, h.IsFloatHistogram())
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require.Equal(t, int64(123), h.Timestamp)
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require.Nil(t, h.ToIntHistogram())
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require.Equal(t, testFloatHistWithoutNHCB, *h.ToFloatHistogram())
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})
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t.Run("v2", func(t *testing.T) {
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testFloatHist := testFloatHistogram()
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h := writev2.FromFloatHistogram(123, &testFloatHist)
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require.True(t, h.IsFloatHistogram())
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require.Equal(t, int64(123), h.Timestamp)
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require.Nil(t, h.ToIntHistogram())
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require.Equal(t, testFloatHist, *h.ToFloatHistogram())
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})
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}
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func TestFromIntOrFloatHistogram_ResetHint(t *testing.T) {
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for _, tc := range []struct {
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input histogram.CounterResetHint
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expectedV1 prompb.Histogram_ResetHint
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expectedV2 writev2.Histogram_ResetHint
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}{
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{
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input: histogram.UnknownCounterReset,
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expectedV1: prompb.Histogram_UNKNOWN,
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expectedV2: writev2.Histogram_RESET_HINT_UNSPECIFIED,
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},
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{
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input: histogram.CounterReset,
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expectedV1: prompb.Histogram_YES,
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expectedV2: writev2.Histogram_RESET_HINT_YES,
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},
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{
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input: histogram.NotCounterReset,
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expectedV1: prompb.Histogram_NO,
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expectedV2: writev2.Histogram_RESET_HINT_NO,
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},
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{
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input: histogram.GaugeType,
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expectedV1: prompb.Histogram_GAUGE,
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expectedV2: writev2.Histogram_RESET_HINT_GAUGE,
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},
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} {
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t.Run("", func(t *testing.T) {
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t.Run("v1", func(t *testing.T) {
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h := testIntHistogram()
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h.CounterResetHint = tc.input
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got := prompb.FromIntHistogram(1337, &h)
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require.Equal(t, tc.expectedV1, got.GetResetHint())
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fh := testFloatHistogram()
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fh.CounterResetHint = tc.input
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got2 := prompb.FromFloatHistogram(1337, &fh)
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require.Equal(t, tc.expectedV1, got2.GetResetHint())
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})
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t.Run("v2", func(t *testing.T) {
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h := testIntHistogram()
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h.CounterResetHint = tc.input
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got := writev2.FromIntHistogram(1337, &h)
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require.Equal(t, tc.expectedV2, got.GetResetHint())
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fh := testFloatHistogram()
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fh.CounterResetHint = tc.input
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got2 := writev2.FromFloatHistogram(1337, &fh)
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require.Equal(t, tc.expectedV2, got2.GetResetHint())
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})
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})
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}
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}
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