mirror of
https://github.com/prometheus/prometheus.git
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d1d2566055
* remote/read_handler: pool input to Marshal() Use a sync.Pool to reuse byte slices between calls to Marshal() in the remote read handler. Signed-off-by: Giedrius Statkevičius <giedrius.statkevicius@vinted.com> * remote: add microbenchmark for remote read handler Signed-off-by: Giedrius Statkevičius <giedrius.statkevicius@vinted.com> Signed-off-by: Giedrius Statkevičius <giedrius.statkevicius@vinted.com>
382 lines
13 KiB
Go
382 lines
13 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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"io"
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"net/http"
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"net/http/httptest"
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"testing"
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"github.com/gogo/protobuf/proto"
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"github.com/golang/snappy"
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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/prompb"
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"github.com/prometheus/prometheus/promql"
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"github.com/prometheus/prometheus/storage"
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)
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func TestSampledReadEndpoint(t *testing.T) {
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suite, err := promql.NewTest(t, `
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load 1m
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test_metric1{foo="bar",baz="qux"} 1
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`)
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require.NoError(t, err)
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defer suite.Close()
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err = suite.Run()
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require.NoError(t, err)
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h := NewReadHandler(nil, nil, suite.Storage(), func() config.Config {
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return config.Config{
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GlobalConfig: config.GlobalConfig{
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// We expect external labels to be added, with the source labels honored.
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ExternalLabels: labels.FromStrings("b", "c", "baz", "a", "d", "e"),
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},
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}
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}, 1e6, 1, 0)
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// Encode the request.
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matcher1, err := labels.NewMatcher(labels.MatchEqual, "__name__", "test_metric1")
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require.NoError(t, err)
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matcher2, err := labels.NewMatcher(labels.MatchEqual, "d", "e")
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require.NoError(t, err)
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query, err := ToQuery(0, 1, []*labels.Matcher{matcher1, matcher2}, &storage.SelectHints{Step: 0, Func: "avg"})
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require.NoError(t, err)
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req := &prompb.ReadRequest{Queries: []*prompb.Query{query}}
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data, err := proto.Marshal(req)
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require.NoError(t, err)
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compressed := snappy.Encode(nil, data)
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request, err := http.NewRequest("POST", "", bytes.NewBuffer(compressed))
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require.NoError(t, err)
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recorder := httptest.NewRecorder()
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h.ServeHTTP(recorder, request)
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require.Equal(t, 2, recorder.Code/100)
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require.Equal(t, "application/x-protobuf", recorder.Result().Header.Get("Content-Type"))
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require.Equal(t, "snappy", recorder.Result().Header.Get("Content-Encoding"))
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// Decode the response.
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compressed, err = io.ReadAll(recorder.Result().Body)
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require.NoError(t, err)
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uncompressed, err := snappy.Decode(nil, compressed)
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require.NoError(t, err)
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var resp prompb.ReadResponse
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err = proto.Unmarshal(uncompressed, &resp)
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require.NoError(t, err)
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require.Equal(t, 1, len(resp.Results), "Expected 1 result.")
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require.Equal(t, &prompb.QueryResult{
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Timeseries: []*prompb.TimeSeries{
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{
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Labels: []prompb.Label{
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{Name: "__name__", Value: "test_metric1"},
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{Name: "b", Value: "c"},
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{Name: "baz", Value: "qux"},
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{Name: "d", Value: "e"},
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{Name: "foo", Value: "bar"},
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},
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Samples: []prompb.Sample{{Value: 1, Timestamp: 0}},
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},
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},
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}, resp.Results[0])
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}
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func BenchmarkStreamReadEndpoint(b *testing.B) {
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suite, err := promql.NewTest(b, `
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load 1m
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test_metric1{foo="bar1",baz="qux"} 0+100x119
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test_metric1{foo="bar2",baz="qux"} 0+100x120
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test_metric1{foo="bar3",baz="qux"} 0+100x240
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`)
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require.NoError(b, err)
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defer suite.Close()
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require.NoError(b, suite.Run())
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api := NewReadHandler(nil, nil, suite.Storage(), func() config.Config {
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return config.Config{}
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},
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0, 1, 0,
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)
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matcher, err := labels.NewMatcher(labels.MatchEqual, "__name__", "test_metric1")
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require.NoError(b, err)
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query, err := ToQuery(0, 14400001, []*labels.Matcher{matcher}, &storage.SelectHints{
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Step: 1,
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Func: "sum",
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Start: 0,
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End: 14400001,
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})
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require.NoError(b, err)
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req := &prompb.ReadRequest{
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Queries: []*prompb.Query{query},
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AcceptedResponseTypes: []prompb.ReadRequest_ResponseType{prompb.ReadRequest_STREAMED_XOR_CHUNKS},
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}
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data, err := proto.Marshal(req)
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require.NoError(b, err)
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b.ResetTimer()
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b.ReportAllocs()
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for i := 0; i < b.N; i++ {
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compressed := snappy.Encode(nil, data)
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request, err := http.NewRequest("POST", "", bytes.NewBuffer(compressed))
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require.NoError(b, err)
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recorder := httptest.NewRecorder()
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api.ServeHTTP(recorder, request)
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require.Equal(b, 2, recorder.Code/100)
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var results []*prompb.ChunkedReadResponse
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stream := NewChunkedReader(recorder.Result().Body, DefaultChunkedReadLimit, nil)
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for {
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res := &prompb.ChunkedReadResponse{}
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err := stream.NextProto(res)
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if err == io.EOF {
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break
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}
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require.NoError(b, err)
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results = append(results, res)
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}
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require.Equal(b, 6, len(results), "Expected 6 results.")
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}
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}
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func TestStreamReadEndpoint(t *testing.T) {
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// First with 120 samples. We expect 1 frame with 1 chunk.
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// Second with 121 samples, We expect 1 frame with 2 chunks.
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// Third with 241 samples. We expect 1 frame with 2 chunks, and 1 frame with 1 chunk for the same series due to bytes limit.
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suite, err := promql.NewTest(t, `
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load 1m
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test_metric1{foo="bar1",baz="qux"} 0+100x119
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test_metric1{foo="bar2",baz="qux"} 0+100x120
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test_metric1{foo="bar3",baz="qux"} 0+100x240
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`)
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require.NoError(t, err)
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defer suite.Close()
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require.NoError(t, suite.Run())
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api := NewReadHandler(nil, nil, suite.Storage(), func() config.Config {
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return config.Config{
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GlobalConfig: config.GlobalConfig{
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// We expect external labels to be added, with the source labels honored.
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ExternalLabels: labels.FromStrings("baz", "a", "b", "c", "d", "e"),
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},
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}
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},
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1e6, 1,
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// Labelset has 57 bytes. Full chunk in test data has roughly 240 bytes. This allows us to have at max 2 chunks in this test.
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57+480,
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)
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// Encode the request.
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matcher1, err := labels.NewMatcher(labels.MatchEqual, "__name__", "test_metric1")
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require.NoError(t, err)
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matcher2, err := labels.NewMatcher(labels.MatchEqual, "d", "e")
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require.NoError(t, err)
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matcher3, err := labels.NewMatcher(labels.MatchEqual, "foo", "bar1")
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require.NoError(t, err)
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query1, err := ToQuery(0, 14400001, []*labels.Matcher{matcher1, matcher2}, &storage.SelectHints{
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Step: 1,
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Func: "avg",
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Start: 0,
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End: 14400001,
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})
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require.NoError(t, err)
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query2, err := ToQuery(0, 14400001, []*labels.Matcher{matcher1, matcher3}, &storage.SelectHints{
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Step: 1,
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Func: "avg",
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Start: 0,
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End: 14400001,
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})
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require.NoError(t, err)
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req := &prompb.ReadRequest{
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Queries: []*prompb.Query{query1, query2},
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AcceptedResponseTypes: []prompb.ReadRequest_ResponseType{prompb.ReadRequest_STREAMED_XOR_CHUNKS},
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}
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data, err := proto.Marshal(req)
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require.NoError(t, err)
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compressed := snappy.Encode(nil, data)
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request, err := http.NewRequest("POST", "", bytes.NewBuffer(compressed))
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require.NoError(t, err)
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recorder := httptest.NewRecorder()
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api.ServeHTTP(recorder, request)
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require.Equal(t, 2, recorder.Code/100)
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require.Equal(t, "application/x-streamed-protobuf; proto=prometheus.ChunkedReadResponse", recorder.Result().Header.Get("Content-Type"))
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require.Equal(t, "", recorder.Result().Header.Get("Content-Encoding"))
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var results []*prompb.ChunkedReadResponse
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stream := NewChunkedReader(recorder.Result().Body, DefaultChunkedReadLimit, nil)
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for {
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res := &prompb.ChunkedReadResponse{}
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err := stream.NextProto(res)
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if err == io.EOF {
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break
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}
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require.NoError(t, err)
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results = append(results, res)
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}
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require.Equal(t, 5, len(results), "Expected 5 results.")
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require.Equal(t, []*prompb.ChunkedReadResponse{
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{
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ChunkedSeries: []*prompb.ChunkedSeries{
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{
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Labels: []prompb.Label{
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{Name: "__name__", Value: "test_metric1"},
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{Name: "b", Value: "c"},
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{Name: "baz", Value: "qux"},
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{Name: "d", Value: "e"},
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{Name: "foo", Value: "bar1"},
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},
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Chunks: []prompb.Chunk{
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{
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Type: prompb.Chunk_XOR,
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MaxTimeMs: 7140000,
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Data: []byte("\000x\000\000\000\000\000\000\000\000\000\340\324\003\302|\005\224\000\301\254}\351z2\320O\355\264n[\007\316\224\243md\371\320\375\032Pm\nS\235\016Q\255\006P\275\250\277\312\201Z\003(3\240R\207\332\005(\017\240\322\201\332=(\023\2402\203Z\007(w\2402\201Z\017(\023\265\227\364P\033@\245\007\364\nP\033C\245\002t\036P+@e\036\364\016Pk@e\002t:P;A\245\001\364\nS\373@\245\006t\006P+C\345\002\364\006Pk@\345\036t\nP\033A\245\003\364:P\033@\245\006t\016ZJ\377\\\205\313\210\327\270\017\345+F[\310\347E)\355\024\241\366\342}(v\215(N\203)\326\207(\336\203(V\332W\362\202t4\240m\005(\377AJ\006\320\322\202t\374\240\255\003(oA\312:\3202"),
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},
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},
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},
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},
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},
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{
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ChunkedSeries: []*prompb.ChunkedSeries{
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{
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Labels: []prompb.Label{
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{Name: "__name__", Value: "test_metric1"},
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{Name: "b", Value: "c"},
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{Name: "baz", Value: "qux"},
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{Name: "d", Value: "e"},
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{Name: "foo", Value: "bar2"},
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},
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Chunks: []prompb.Chunk{
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{
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Type: prompb.Chunk_XOR,
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MaxTimeMs: 7140000,
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Data: []byte("\000x\000\000\000\000\000\000\000\000\000\340\324\003\302|\005\224\000\301\254}\351z2\320O\355\264n[\007\316\224\243md\371\320\375\032Pm\nS\235\016Q\255\006P\275\250\277\312\201Z\003(3\240R\207\332\005(\017\240\322\201\332=(\023\2402\203Z\007(w\2402\201Z\017(\023\265\227\364P\033@\245\007\364\nP\033C\245\002t\036P+@e\036\364\016Pk@e\002t:P;A\245\001\364\nS\373@\245\006t\006P+C\345\002\364\006Pk@\345\036t\nP\033A\245\003\364:P\033@\245\006t\016ZJ\377\\\205\313\210\327\270\017\345+F[\310\347E)\355\024\241\366\342}(v\215(N\203)\326\207(\336\203(V\332W\362\202t4\240m\005(\377AJ\006\320\322\202t\374\240\255\003(oA\312:\3202"),
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},
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{
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Type: prompb.Chunk_XOR,
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MinTimeMs: 7200000,
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MaxTimeMs: 7200000,
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Data: []byte("\000\001\200\364\356\006@\307p\000\000\000\000\000\000"),
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},
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},
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},
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},
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},
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{
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ChunkedSeries: []*prompb.ChunkedSeries{
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{
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Labels: []prompb.Label{
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{Name: "__name__", Value: "test_metric1"},
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{Name: "b", Value: "c"},
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{Name: "baz", Value: "qux"},
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{Name: "d", Value: "e"},
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{Name: "foo", Value: "bar3"},
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},
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Chunks: []prompb.Chunk{
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{
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Type: prompb.Chunk_XOR,
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MaxTimeMs: 7140000,
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Data: []byte("\000x\000\000\000\000\000\000\000\000\000\340\324\003\302|\005\224\000\301\254}\351z2\320O\355\264n[\007\316\224\243md\371\320\375\032Pm\nS\235\016Q\255\006P\275\250\277\312\201Z\003(3\240R\207\332\005(\017\240\322\201\332=(\023\2402\203Z\007(w\2402\201Z\017(\023\265\227\364P\033@\245\007\364\nP\033C\245\002t\036P+@e\036\364\016Pk@e\002t:P;A\245\001\364\nS\373@\245\006t\006P+C\345\002\364\006Pk@\345\036t\nP\033A\245\003\364:P\033@\245\006t\016ZJ\377\\\205\313\210\327\270\017\345+F[\310\347E)\355\024\241\366\342}(v\215(N\203)\326\207(\336\203(V\332W\362\202t4\240m\005(\377AJ\006\320\322\202t\374\240\255\003(oA\312:\3202"),
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},
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{
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Type: prompb.Chunk_XOR,
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MinTimeMs: 7200000,
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MaxTimeMs: 14340000,
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Data: []byte("\000x\200\364\356\006@\307p\000\000\000\000\000\340\324\003\340>\224\355\260\277\322\200\372\005(=\240R\207:\003(\025\240\362\201z\003(\365\240r\203:\005(\r\241\322\201\372\r(\r\240R\237:\007(5\2402\201z\037(\025\2402\203:\005(\375\240R\200\372\r(\035\241\322\201:\003(5\240r\326g\364\271\213\227!\253q\037\312N\340GJ\033E)\375\024\241\266\362}(N\217(V\203)\336\207(\326\203(N\334W\322\203\2644\240}\005(\373AJ\031\3202\202\264\374\240\275\003(kA\3129\320R\201\2644\240\375\264\277\322\200\332\005(3\240r\207Z\003(\027\240\362\201Z\003(\363\240R\203\332\005(\017\241\322\201\332\r(\023\2402\237Z\007(7\2402\201Z\037(\023\240\322\200\332\005(\377\240R\200\332\r "),
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},
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},
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},
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},
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},
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{
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ChunkedSeries: []*prompb.ChunkedSeries{
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{
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Labels: []prompb.Label{
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{Name: "__name__", Value: "test_metric1"},
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{Name: "b", Value: "c"},
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{Name: "baz", Value: "qux"},
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{Name: "d", Value: "e"},
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{Name: "foo", Value: "bar3"},
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},
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Chunks: []prompb.Chunk{
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{
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Type: prompb.Chunk_XOR,
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MinTimeMs: 14400000,
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MaxTimeMs: 14400000,
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Data: []byte("\000\001\200\350\335\r@\327p\000\000\000\000\000\000"),
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},
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},
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},
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},
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},
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{
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ChunkedSeries: []*prompb.ChunkedSeries{
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{
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Labels: []prompb.Label{
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{Name: "__name__", Value: "test_metric1"},
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{Name: "b", Value: "c"},
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{Name: "baz", Value: "qux"},
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{Name: "d", Value: "e"},
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{Name: "foo", Value: "bar1"},
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},
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Chunks: []prompb.Chunk{
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{
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Type: prompb.Chunk_XOR,
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MaxTimeMs: 7140000,
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Data: []byte("\000x\000\000\000\000\000\000\000\000\000\340\324\003\302|\005\224\000\301\254}\351z2\320O\355\264n[\007\316\224\243md\371\320\375\032Pm\nS\235\016Q\255\006P\275\250\277\312\201Z\003(3\240R\207\332\005(\017\240\322\201\332=(\023\2402\203Z\007(w\2402\201Z\017(\023\265\227\364P\033@\245\007\364\nP\033C\245\002t\036P+@e\036\364\016Pk@e\002t:P;A\245\001\364\nS\373@\245\006t\006P+C\345\002\364\006Pk@\345\036t\nP\033A\245\003\364:P\033@\245\006t\016ZJ\377\\\205\313\210\327\270\017\345+F[\310\347E)\355\024\241\366\342}(v\215(N\203)\326\207(\336\203(V\332W\362\202t4\240m\005(\377AJ\006\320\322\202t\374\240\255\003(oA\312:\3202"),
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},
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},
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},
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},
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QueryIndex: 1,
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},
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}, results)
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}
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