mirror of https://github.com/prometheus/prometheus
413 lines
12 KiB
Go
413 lines
12 KiB
Go
// Copyright 2021 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 remote
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import (
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"bytes"
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"context"
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"fmt"
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"io"
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"math"
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"net/http"
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"net/http/httptest"
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"strconv"
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"strings"
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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/google/go-cmp/cmp"
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"github.com/stretchr/testify/require"
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"github.com/prometheus/prometheus/model/exemplar"
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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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"github.com/prometheus/prometheus/storage"
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"github.com/prometheus/prometheus/tsdb"
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"github.com/prometheus/prometheus/util/testutil"
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)
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func TestRemoteWriteHandler(t *testing.T) {
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buf, _, _, err := buildWriteRequest(nil, writeRequestFixture.Timeseries, nil, nil, nil, nil)
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require.NoError(t, err)
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req, err := http.NewRequest("", "", bytes.NewReader(buf))
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require.NoError(t, err)
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appendable := &mockAppendable{}
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handler := NewWriteHandler(nil, nil, appendable)
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recorder := httptest.NewRecorder()
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handler.ServeHTTP(recorder, req)
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resp := recorder.Result()
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require.Equal(t, http.StatusNoContent, resp.StatusCode)
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b := labels.NewScratchBuilder(0)
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i := 0
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j := 0
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k := 0
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for _, ts := range writeRequestFixture.Timeseries {
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labels := LabelProtosToLabels(&b, ts.Labels)
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for _, s := range ts.Samples {
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requireEqual(t, mockSample{labels, s.Timestamp, s.Value}, appendable.samples[i])
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i++
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}
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for _, e := range ts.Exemplars {
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exemplarLabels := LabelProtosToLabels(&b, e.Labels)
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requireEqual(t, mockExemplar{labels, exemplarLabels, e.Timestamp, e.Value}, appendable.exemplars[j])
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j++
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}
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for _, hp := range ts.Histograms {
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if hp.IsFloatHistogram() {
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fh := FloatHistogramProtoToFloatHistogram(hp)
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requireEqual(t, mockHistogram{labels, hp.Timestamp, nil, fh}, appendable.histograms[k])
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} else {
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h := HistogramProtoToHistogram(hp)
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requireEqual(t, mockHistogram{labels, hp.Timestamp, h, nil}, appendable.histograms[k])
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}
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k++
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}
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}
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}
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func TestOutOfOrderSample(t *testing.T) {
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tests := []struct {
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Name string
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Timestamp int64
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}{
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{
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Name: "historic",
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Timestamp: 0,
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},
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{
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Name: "future",
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Timestamp: math.MaxInt64,
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},
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}
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for _, tc := range tests {
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t.Run(tc.Name, func(t *testing.T) {
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buf, _, _, err := buildWriteRequest(nil, []prompb.TimeSeries{{
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Labels: []prompb.Label{{Name: "__name__", Value: "test_metric"}},
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Samples: []prompb.Sample{{Value: 1, Timestamp: tc.Timestamp}},
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}}, nil, nil, nil, nil)
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require.NoError(t, err)
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req, err := http.NewRequest("", "", bytes.NewReader(buf))
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require.NoError(t, err)
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appendable := &mockAppendable{
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latestSample: 100,
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}
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handler := NewWriteHandler(log.NewNopLogger(), nil, appendable)
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recorder := httptest.NewRecorder()
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handler.ServeHTTP(recorder, req)
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resp := recorder.Result()
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require.Equal(t, http.StatusBadRequest, resp.StatusCode)
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})
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}
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}
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// This test case currently aims to verify that the WriteHandler endpoint
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// don't fail on ingestion errors since the exemplar storage is
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// still experimental.
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func TestOutOfOrderExemplar(t *testing.T) {
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tests := []struct {
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Name string
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Timestamp int64
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}{
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{
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Name: "historic",
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Timestamp: 0,
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},
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{
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Name: "future",
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Timestamp: math.MaxInt64,
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},
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}
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for _, tc := range tests {
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t.Run(tc.Name, func(t *testing.T) {
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buf, _, _, err := buildWriteRequest(nil, []prompb.TimeSeries{{
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Labels: []prompb.Label{{Name: "__name__", Value: "test_metric"}},
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Exemplars: []prompb.Exemplar{{Labels: []prompb.Label{{Name: "foo", Value: "bar"}}, Value: 1, Timestamp: tc.Timestamp}},
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}}, nil, nil, nil, nil)
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require.NoError(t, err)
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req, err := http.NewRequest("", "", bytes.NewReader(buf))
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require.NoError(t, err)
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appendable := &mockAppendable{
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latestExemplar: 100,
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}
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handler := NewWriteHandler(log.NewNopLogger(), nil, appendable)
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recorder := httptest.NewRecorder()
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handler.ServeHTTP(recorder, req)
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resp := recorder.Result()
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// TODO: update to require.Equal(t, http.StatusConflict, resp.StatusCode) once exemplar storage is not experimental.
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require.Equal(t, http.StatusNoContent, resp.StatusCode)
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})
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}
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}
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func TestOutOfOrderHistogram(t *testing.T) {
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tests := []struct {
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Name string
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Timestamp int64
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}{
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{
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Name: "historic",
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Timestamp: 0,
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},
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{
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Name: "future",
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Timestamp: math.MaxInt64,
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},
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}
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for _, tc := range tests {
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t.Run(tc.Name, func(t *testing.T) {
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buf, _, _, err := buildWriteRequest(nil, []prompb.TimeSeries{{
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Labels: []prompb.Label{{Name: "__name__", Value: "test_metric"}},
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Histograms: []prompb.Histogram{HistogramToHistogramProto(tc.Timestamp, &testHistogram), FloatHistogramToHistogramProto(1, testHistogram.ToFloat(nil))},
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}}, nil, nil, nil, nil)
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require.NoError(t, err)
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req, err := http.NewRequest("", "", bytes.NewReader(buf))
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require.NoError(t, err)
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appendable := &mockAppendable{
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latestHistogram: 100,
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}
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handler := NewWriteHandler(log.NewNopLogger(), nil, appendable)
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recorder := httptest.NewRecorder()
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handler.ServeHTTP(recorder, req)
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resp := recorder.Result()
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require.Equal(t, http.StatusBadRequest, resp.StatusCode)
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})
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}
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}
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func BenchmarkRemoteWritehandler(b *testing.B) {
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const labelValue = "abcdefg'hijlmn234!@#$%^&*()_+~`\"{}[],./<>?hello0123hiOlá你好Dzieńdobry9Zd8ra765v4stvuyte"
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reqs := []*http.Request{}
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for i := 0; i < b.N; i++ {
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num := strings.Repeat(strconv.Itoa(i), 16)
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buf, _, _, err := buildWriteRequest(nil, []prompb.TimeSeries{{
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Labels: []prompb.Label{
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{Name: "__name__", Value: "test_metric"},
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{Name: "test_label_name_" + num, Value: labelValue + num},
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},
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Histograms: []prompb.Histogram{HistogramToHistogramProto(0, &testHistogram)},
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}}, nil, nil, nil, nil)
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require.NoError(b, err)
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req, err := http.NewRequest("", "", bytes.NewReader(buf))
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require.NoError(b, err)
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reqs = append(reqs, req)
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}
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appendable := &mockAppendable{}
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handler := NewWriteHandler(log.NewNopLogger(), nil, appendable)
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recorder := httptest.NewRecorder()
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b.ResetTimer()
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for _, req := range reqs {
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handler.ServeHTTP(recorder, req)
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}
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}
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func TestCommitErr(t *testing.T) {
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buf, _, _, err := buildWriteRequest(nil, writeRequestFixture.Timeseries, nil, nil, nil, nil)
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require.NoError(t, err)
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req, err := http.NewRequest("", "", bytes.NewReader(buf))
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require.NoError(t, err)
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appendable := &mockAppendable{
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commitErr: fmt.Errorf("commit error"),
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}
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handler := NewWriteHandler(log.NewNopLogger(), nil, appendable)
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recorder := httptest.NewRecorder()
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handler.ServeHTTP(recorder, req)
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resp := recorder.Result()
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body, err := io.ReadAll(resp.Body)
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require.NoError(t, err)
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require.Equal(t, http.StatusInternalServerError, resp.StatusCode)
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require.Equal(t, "commit error\n", string(body))
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}
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func BenchmarkRemoteWriteOOOSamples(b *testing.B) {
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b.Skip("Not a valid benchmark (does not count to b.N)")
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dir := b.TempDir()
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opts := tsdb.DefaultOptions()
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opts.OutOfOrderCapMax = 30
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opts.OutOfOrderTimeWindow = 120 * time.Minute.Milliseconds()
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db, err := tsdb.Open(dir, nil, nil, opts, nil)
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require.NoError(b, err)
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b.Cleanup(func() {
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require.NoError(b, db.Close())
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})
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handler := NewWriteHandler(log.NewNopLogger(), nil, db.Head())
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buf, _, _, err := buildWriteRequest(nil, genSeriesWithSample(1000, 200*time.Minute.Milliseconds()), nil, nil, nil, nil)
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require.NoError(b, err)
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req, err := http.NewRequest("", "", bytes.NewReader(buf))
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require.NoError(b, err)
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recorder := httptest.NewRecorder()
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handler.ServeHTTP(recorder, req)
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require.Equal(b, http.StatusNoContent, recorder.Code)
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require.Equal(b, uint64(1000), db.Head().NumSeries())
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var bufRequests [][]byte
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for i := 0; i < 100; i++ {
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buf, _, _, err = buildWriteRequest(nil, genSeriesWithSample(1000, int64(80+i)*time.Minute.Milliseconds()), nil, nil, nil, nil)
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require.NoError(b, err)
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bufRequests = append(bufRequests, buf)
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}
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b.ResetTimer()
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for i := 0; i < 100; i++ {
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req, err = http.NewRequest("", "", bytes.NewReader(bufRequests[i]))
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require.NoError(b, err)
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recorder = httptest.NewRecorder()
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handler.ServeHTTP(recorder, req)
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require.Equal(b, http.StatusNoContent, recorder.Code)
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require.Equal(b, uint64(1000), db.Head().NumSeries())
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}
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}
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func genSeriesWithSample(numSeries int, ts int64) []prompb.TimeSeries {
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var series []prompb.TimeSeries
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for i := 0; i < numSeries; i++ {
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s := prompb.TimeSeries{
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Labels: []prompb.Label{{Name: "__name__", Value: fmt.Sprintf("test_metric_%d", i)}},
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Samples: []prompb.Sample{{Value: float64(i), Timestamp: ts}},
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}
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series = append(series, s)
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}
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return series
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}
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type mockAppendable struct {
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latestSample int64
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samples []mockSample
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latestExemplar int64
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exemplars []mockExemplar
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latestHistogram int64
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histograms []mockHistogram
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commitErr error
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}
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type mockSample struct {
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l labels.Labels
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t int64
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v float64
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}
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type mockExemplar struct {
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l labels.Labels
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el labels.Labels
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t int64
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v float64
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}
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type mockHistogram struct {
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l labels.Labels
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t int64
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h *histogram.Histogram
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fh *histogram.FloatHistogram
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}
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// Wrapper to instruct go-cmp package to compare a list of structs with unexported fields.
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func requireEqual(t *testing.T, expected, actual interface{}, msgAndArgs ...interface{}) {
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testutil.RequireEqualWithOptions(t, expected, actual,
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[]cmp.Option{cmp.AllowUnexported(mockSample{}), cmp.AllowUnexported(mockExemplar{}), cmp.AllowUnexported(mockHistogram{})},
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msgAndArgs...)
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}
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func (m *mockAppendable) Appender(_ context.Context) storage.Appender {
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return m
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}
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func (m *mockAppendable) Append(_ storage.SeriesRef, l labels.Labels, t int64, v float64) (storage.SeriesRef, error) {
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if t < m.latestSample {
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return 0, storage.ErrOutOfOrderSample
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}
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m.latestSample = t
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m.samples = append(m.samples, mockSample{l, t, v})
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return 0, nil
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}
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func (m *mockAppendable) Commit() error {
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return m.commitErr
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}
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func (*mockAppendable) Rollback() error {
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return fmt.Errorf("not implemented")
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}
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func (m *mockAppendable) AppendExemplar(_ storage.SeriesRef, l labels.Labels, e exemplar.Exemplar) (storage.SeriesRef, error) {
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if e.Ts < m.latestExemplar {
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return 0, storage.ErrOutOfOrderExemplar
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}
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m.latestExemplar = e.Ts
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m.exemplars = append(m.exemplars, mockExemplar{l, e.Labels, e.Ts, e.Value})
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return 0, nil
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}
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func (m *mockAppendable) AppendHistogram(_ storage.SeriesRef, l labels.Labels, t int64, h *histogram.Histogram, fh *histogram.FloatHistogram) (storage.SeriesRef, error) {
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if t < m.latestHistogram {
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return 0, storage.ErrOutOfOrderSample
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}
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m.latestHistogram = t
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m.histograms = append(m.histograms, mockHistogram{l, t, h, fh})
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return 0, nil
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}
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func (m *mockAppendable) UpdateMetadata(_ storage.SeriesRef, _ labels.Labels, _ metadata.Metadata) (storage.SeriesRef, error) {
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// TODO: Wire metadata in a mockAppendable field when we get around to handling metadata in remote_write.
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// UpdateMetadata is no-op for remote write (where mockAppendable is being used to test) for now.
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return 0, nil
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}
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func (m *mockAppendable) AppendCTZeroSample(_ storage.SeriesRef, _ labels.Labels, _, _ int64) (storage.SeriesRef, error) {
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// AppendCTZeroSample is no-op for remote-write for now.
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return 0, nil
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}
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