mirror of
https://github.com/prometheus/prometheus.git
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3c7de69059
Patterned after `Chunk.Iterator()`: pass the old iterator in so it can be re-used to avoid allocating a new object. (This commit does not do any re-use; it is just changing all the method signatures so re-use is possible in later commits.) Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
370 lines
10 KiB
Go
370 lines
10 KiB
Go
// Copyright 2017 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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"fmt"
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"testing"
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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/textparse"
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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/chunkenc"
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)
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var testHistogram = histogram.Histogram{
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Schema: 2,
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ZeroThreshold: 1e-128,
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ZeroCount: 0,
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Count: 0,
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Sum: 20,
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PositiveSpans: []histogram.Span{{Offset: 0, Length: 1}},
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PositiveBuckets: []int64{1},
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NegativeSpans: []histogram.Span{{Offset: 0, Length: 1}},
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NegativeBuckets: []int64{-1},
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}
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var writeRequestFixture = &prompb.WriteRequest{
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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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Exemplars: []prompb.Exemplar{{Labels: []prompb.Label{{Name: "f", Value: "g"}}, Value: 1, Timestamp: 0}},
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Histograms: []prompb.Histogram{HistogramToHistogramProto(0, &testHistogram)},
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},
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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: 2, Timestamp: 1}},
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Exemplars: []prompb.Exemplar{{Labels: []prompb.Label{{Name: "h", Value: "i"}}, Value: 2, Timestamp: 1}},
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Histograms: []prompb.Histogram{HistogramToHistogramProto(1, &testHistogram)},
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},
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},
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}
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func TestValidateLabelsAndMetricName(t *testing.T) {
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tests := []struct {
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input labels.Labels
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expectedErr string
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description string
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}{
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{
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input: labels.FromStrings(
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"__name__", "name",
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"labelName", "labelValue",
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),
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expectedErr: "",
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description: "regular labels",
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},
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{
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input: labels.FromStrings(
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"__name__", "name",
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"_labelName", "labelValue",
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),
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expectedErr: "",
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description: "label name with _",
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},
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{
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input: labels.FromStrings(
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"__name__", "name",
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"@labelName", "labelValue",
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),
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expectedErr: "invalid label name: @labelName",
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description: "label name with @",
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},
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{
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input: labels.FromStrings(
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"__name__", "name",
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"123labelName", "labelValue",
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),
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expectedErr: "invalid label name: 123labelName",
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description: "label name starts with numbers",
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},
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{
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input: labels.FromStrings(
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"__name__", "name",
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"", "labelValue",
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),
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expectedErr: "invalid label name: ",
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description: "label name is empty string",
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},
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{
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input: labels.FromStrings(
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"__name__", "name",
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"labelName", string([]byte{0xff}),
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),
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expectedErr: "invalid label value: " + string([]byte{0xff}),
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description: "label value is an invalid UTF-8 value",
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},
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{
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input: labels.FromStrings(
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"__name__", "@invalid_name",
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),
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expectedErr: "invalid metric name: @invalid_name",
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description: "metric name starts with @",
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},
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{
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input: labels.FromStrings(
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"__name__", "name1",
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"__name__", "name2",
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),
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expectedErr: "duplicate label with name: __name__",
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description: "duplicate label names",
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},
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{
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input: labels.FromStrings(
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"label1", "name",
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"label2", "name",
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),
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expectedErr: "",
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description: "duplicate label values",
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},
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{
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input: labels.FromStrings(
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"", "name",
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"label2", "name",
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),
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expectedErr: "invalid label name: ",
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description: "don't report as duplicate label name",
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},
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}
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for _, test := range tests {
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t.Run(test.description, func(t *testing.T) {
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err := validateLabelsAndMetricName(test.input)
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if test.expectedErr != "" {
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require.Error(t, err)
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require.Equal(t, test.expectedErr, err.Error())
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} else {
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require.NoError(t, err)
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}
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})
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}
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}
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func TestConcreteSeriesSet(t *testing.T) {
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series1 := &concreteSeries{
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labels: labels.FromStrings("foo", "bar"),
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samples: []prompb.Sample{{Value: 1, Timestamp: 2}},
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}
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series2 := &concreteSeries{
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labels: labels.FromStrings("foo", "baz"),
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samples: []prompb.Sample{{Value: 3, Timestamp: 4}},
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}
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c := &concreteSeriesSet{
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series: []storage.Series{series1, series2},
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}
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require.True(t, c.Next(), "Expected Next() to be true.")
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require.Equal(t, series1, c.At(), "Unexpected series returned.")
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require.True(t, c.Next(), "Expected Next() to be true.")
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require.Equal(t, series2, c.At(), "Unexpected series returned.")
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require.False(t, c.Next(), "Expected Next() to be false.")
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}
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func TestConcreteSeriesClonesLabels(t *testing.T) {
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lbls := labels.FromStrings("a", "b", "c", "d")
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cs := concreteSeries{
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labels: lbls,
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}
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gotLabels := cs.Labels()
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require.Equal(t, lbls, gotLabels)
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gotLabels[0].Value = "foo"
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gotLabels[1].Value = "bar"
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gotLabels = cs.Labels()
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require.Equal(t, lbls, gotLabels)
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}
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func TestConcreteSeriesIterator(t *testing.T) {
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series := &concreteSeries{
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labels: labels.FromStrings("foo", "bar"),
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samples: []prompb.Sample{
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{Value: 1, Timestamp: 1},
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{Value: 1.5, Timestamp: 1},
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{Value: 2, Timestamp: 2},
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{Value: 3, Timestamp: 3},
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{Value: 4, Timestamp: 4},
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},
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}
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it := series.Iterator(nil)
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// Seek to the first sample with ts=1.
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require.Equal(t, chunkenc.ValFloat, it.Seek(1))
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ts, v := it.At()
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require.Equal(t, int64(1), ts)
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require.Equal(t, 1., v)
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// Seek one further, next sample still has ts=1.
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require.Equal(t, chunkenc.ValFloat, it.Next())
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ts, v = it.At()
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require.Equal(t, int64(1), ts)
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require.Equal(t, 1.5, v)
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// Seek again to 1 and make sure we stay where we are.
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require.Equal(t, chunkenc.ValFloat, it.Seek(1))
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ts, v = it.At()
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require.Equal(t, int64(1), ts)
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require.Equal(t, 1.5, v)
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// Another seek.
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require.Equal(t, chunkenc.ValFloat, it.Seek(3))
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ts, v = it.At()
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require.Equal(t, int64(3), ts)
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require.Equal(t, 3., v)
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// And we don't go back.
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require.Equal(t, chunkenc.ValFloat, it.Seek(2))
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ts, v = it.At()
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require.Equal(t, int64(3), ts)
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require.Equal(t, 3., v)
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// Seek beyond the end.
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require.Equal(t, chunkenc.ValNone, it.Seek(5))
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// And we don't go back. (This exposes issue #10027.)
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require.Equal(t, chunkenc.ValNone, it.Seek(2))
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}
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func TestFromQueryResultWithDuplicates(t *testing.T) {
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ts1 := prompb.TimeSeries{
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Labels: []prompb.Label{
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{Name: "foo", Value: "bar"},
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{Name: "foo", Value: "def"},
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},
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Samples: []prompb.Sample{
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{Value: 0.0, Timestamp: 0},
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},
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}
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res := prompb.QueryResult{
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Timeseries: []*prompb.TimeSeries{
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&ts1,
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},
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}
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series := FromQueryResult(false, &res)
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errSeries, isErrSeriesSet := series.(errSeriesSet)
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require.True(t, isErrSeriesSet, "Expected resulting series to be an errSeriesSet")
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errMessage := errSeries.Err().Error()
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require.Equal(t, "duplicate label with name: foo", errMessage, fmt.Sprintf("Expected error to be from duplicate label, but got: %s", errMessage))
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}
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func TestNegotiateResponseType(t *testing.T) {
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r, err := NegotiateResponseType([]prompb.ReadRequest_ResponseType{
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prompb.ReadRequest_STREAMED_XOR_CHUNKS,
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prompb.ReadRequest_SAMPLES,
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})
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require.NoError(t, err)
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require.Equal(t, prompb.ReadRequest_STREAMED_XOR_CHUNKS, r)
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r2, err := NegotiateResponseType([]prompb.ReadRequest_ResponseType{
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prompb.ReadRequest_SAMPLES,
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prompb.ReadRequest_STREAMED_XOR_CHUNKS,
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})
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require.NoError(t, err)
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require.Equal(t, prompb.ReadRequest_SAMPLES, r2)
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r3, err := NegotiateResponseType([]prompb.ReadRequest_ResponseType{})
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require.NoError(t, err)
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require.Equal(t, prompb.ReadRequest_SAMPLES, r3)
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_, err = NegotiateResponseType([]prompb.ReadRequest_ResponseType{20})
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require.Error(t, err, "expected error due to not supported requested response types")
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require.Equal(t, "server does not support any of the requested response types: [20]; supported: map[SAMPLES:{} STREAMED_XOR_CHUNKS:{}]", err.Error())
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}
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func TestMergeLabels(t *testing.T) {
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for _, tc := range []struct {
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primary, secondary, expected []prompb.Label
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}{
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{
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primary: []prompb.Label{{Name: "aaa", Value: "foo"}, {Name: "bbb", Value: "foo"}, {Name: "ddd", Value: "foo"}},
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secondary: []prompb.Label{{Name: "bbb", Value: "bar"}, {Name: "ccc", Value: "bar"}},
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expected: []prompb.Label{{Name: "aaa", Value: "foo"}, {Name: "bbb", Value: "foo"}, {Name: "ccc", Value: "bar"}, {Name: "ddd", Value: "foo"}},
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},
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{
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primary: []prompb.Label{{Name: "bbb", Value: "bar"}, {Name: "ccc", Value: "bar"}},
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secondary: []prompb.Label{{Name: "aaa", Value: "foo"}, {Name: "bbb", Value: "foo"}, {Name: "ddd", Value: "foo"}},
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expected: []prompb.Label{{Name: "aaa", Value: "foo"}, {Name: "bbb", Value: "bar"}, {Name: "ccc", Value: "bar"}, {Name: "ddd", Value: "foo"}},
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},
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} {
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require.Equal(t, tc.expected, MergeLabels(tc.primary, tc.secondary))
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}
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}
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func TestMetricTypeToMetricTypeProto(t *testing.T) {
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tc := []struct {
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desc string
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input textparse.MetricType
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expected prompb.MetricMetadata_MetricType
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}{
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{
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desc: "with a single-word metric",
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input: textparse.MetricTypeCounter,
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expected: prompb.MetricMetadata_COUNTER,
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},
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{
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desc: "with a two-word metric",
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input: textparse.MetricTypeStateset,
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expected: prompb.MetricMetadata_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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expected: prompb.MetricMetadata_UNKNOWN,
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},
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}
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for _, tt := range tc {
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t.Run(tt.desc, func(t *testing.T) {
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m := metricTypeToMetricTypeProto(tt.input)
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require.Equal(t, tt.expected, m)
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})
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}
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}
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func TestDecodeWriteRequest(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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actual, err := DecodeWriteRequest(bytes.NewReader(buf))
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require.NoError(t, err)
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require.Equal(t, writeRequestFixture, actual)
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}
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func TestNilHistogramProto(t *testing.T) {
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// This function will panic if it impromperly handles nil
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// values, causing the test to fail.
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HistogramProtoToHistogram(prompb.Histogram{})
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}
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