mirror of
https://github.com/prometheus/prometheus.git
synced 2024-09-20 07:47:31 -07:00
c3c7d44d84
We haven't updated golint-ci in our CI yet, but this commit prepares for that. There are a lot of new warnings, and it is mostly because the "revive" linter got updated. I agree with most of the new warnings, mostly around not naming unused function parameters (although it is justified in some cases for documentation purposes – while things like mocks are a good example where not naming the parameter is clearer). I'm pretty upset about the "empty block" warning to include `for` loops. It's such a common pattern to do something in the head of the `for` loop and then have an empty block. There is still an open issue about this: https://github.com/mgechev/revive/issues/810 I have disabled "revive" altogether in files where empty blocks are used excessively, and I have made the effort to add individual `// nolint:revive` where empty blocks are used just once or twice. It's borderline noisy, though, but let's go with it for now. I should mention that none of the "empty block" warnings for `for` loop bodies were legitimate. Signed-off-by: beorn7 <beorn@grafana.com>
312 lines
9 KiB
Go
312 lines
9 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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"net/http"
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"net/http/httptest"
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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/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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)
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func TestRemoteWriteHandler(t *testing.T) {
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buf, _, err := buildWriteRequest(writeRequestFixture.Timeseries, 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, 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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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(ts.Labels)
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for _, s := range ts.Samples {
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require.Equal(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(e.Labels)
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require.Equal(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.GetCountFloat() > 0 || hp.GetZeroCountFloat() > 0 { // It is a float histogram.
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fh := FloatHistogramProtoToFloatHistogram(hp)
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require.Equal(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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require.Equal(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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buf, _, err := buildWriteRequest([]prompb.TimeSeries{{
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Labels: []prompb.Label{{Name: "__name__", Value: "test_metric"}},
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Samples: []prompb.Sample{{Value: 1, Timestamp: 0}},
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}}, 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(), 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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// 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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buf, _, err := buildWriteRequest([]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: 0}},
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}}, 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(), 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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func TestOutOfOrderHistogram(t *testing.T) {
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buf, _, err := buildWriteRequest([]prompb.TimeSeries{{
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Labels: []prompb.Label{{Name: "__name__", Value: "test_metric"}},
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Histograms: []prompb.Histogram{HistogramToHistogramProto(0, &testHistogram), FloatHistogramToHistogramProto(1, testHistogram.ToFloat())},
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}}, 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(), 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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func TestCommitErr(t *testing.T) {
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buf, _, err := buildWriteRequest(writeRequestFixture.Timeseries, 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(), 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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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(), db.Head())
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buf, _, err := buildWriteRequest(genSeriesWithSample(1000, 200*time.Minute.Milliseconds()), 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, db.Head().NumSeries(), uint64(1000))
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var bufRequests [][]byte
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for i := 0; i < 100; i++ {
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buf, _, err = buildWriteRequest(genSeriesWithSample(1000, int64(80+i)*time.Minute.Milliseconds()), 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, db.Head().NumSeries(), uint64(1000))
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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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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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