589 lines
14 KiB
Go
589 lines
14 KiB
Go
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// Copyright 2014 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 expfmt
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import (
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"math"
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"strings"
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"testing"
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"github.com/golang/protobuf/proto"
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dto "github.com/prometheus/client_model/go"
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)
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func testTextParse(t testing.TB) {
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var scenarios = []struct {
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in string
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out []*dto.MetricFamily
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}{
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// 0: Empty lines as input.
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{
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in: `
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`,
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out: []*dto.MetricFamily{},
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},
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// 1: Minimal case.
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{
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in: `
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minimal_metric 1.234
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another_metric -3e3 103948
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# Even that:
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no_labels{} 3
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# HELP line for non-existing metric will be ignored.
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`,
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out: []*dto.MetricFamily{
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&dto.MetricFamily{
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Name: proto.String("minimal_metric"),
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Type: dto.MetricType_UNTYPED.Enum(),
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Metric: []*dto.Metric{
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&dto.Metric{
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Untyped: &dto.Untyped{
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Value: proto.Float64(1.234),
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},
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},
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},
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},
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&dto.MetricFamily{
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Name: proto.String("another_metric"),
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Type: dto.MetricType_UNTYPED.Enum(),
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Metric: []*dto.Metric{
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&dto.Metric{
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Untyped: &dto.Untyped{
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Value: proto.Float64(-3e3),
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},
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TimestampMs: proto.Int64(103948),
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},
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},
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},
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&dto.MetricFamily{
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Name: proto.String("no_labels"),
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Type: dto.MetricType_UNTYPED.Enum(),
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Metric: []*dto.Metric{
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&dto.Metric{
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Untyped: &dto.Untyped{
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Value: proto.Float64(3),
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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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// 2: Counters & gauges, docstrings, various whitespace, escape sequences.
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{
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in: `
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# A normal comment.
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#
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# TYPE name counter
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name{labelname="val1",basename="basevalue"} NaN
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name {labelname="val2",basename="base\"v\\al\nue"} 0.23 1234567890
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# HELP name two-line\n doc str\\ing
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# HELP name2 doc str"ing 2
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# TYPE name2 gauge
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name2{labelname="val2" ,basename = "basevalue2" } +Inf 54321
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name2{ labelname = "val1" , }-Inf
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`,
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out: []*dto.MetricFamily{
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&dto.MetricFamily{
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Name: proto.String("name"),
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Help: proto.String("two-line\n doc str\\ing"),
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Type: dto.MetricType_COUNTER.Enum(),
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Metric: []*dto.Metric{
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&dto.Metric{
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Label: []*dto.LabelPair{
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&dto.LabelPair{
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Name: proto.String("labelname"),
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Value: proto.String("val1"),
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},
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&dto.LabelPair{
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Name: proto.String("basename"),
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Value: proto.String("basevalue"),
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},
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},
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Counter: &dto.Counter{
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Value: proto.Float64(math.NaN()),
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},
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},
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&dto.Metric{
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Label: []*dto.LabelPair{
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&dto.LabelPair{
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Name: proto.String("labelname"),
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Value: proto.String("val2"),
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},
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&dto.LabelPair{
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Name: proto.String("basename"),
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Value: proto.String("base\"v\\al\nue"),
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},
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},
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Counter: &dto.Counter{
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Value: proto.Float64(.23),
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},
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TimestampMs: proto.Int64(1234567890),
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},
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},
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},
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&dto.MetricFamily{
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Name: proto.String("name2"),
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Help: proto.String("doc str\"ing 2"),
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Type: dto.MetricType_GAUGE.Enum(),
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Metric: []*dto.Metric{
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&dto.Metric{
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Label: []*dto.LabelPair{
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&dto.LabelPair{
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Name: proto.String("labelname"),
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Value: proto.String("val2"),
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},
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&dto.LabelPair{
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Name: proto.String("basename"),
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Value: proto.String("basevalue2"),
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},
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},
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Gauge: &dto.Gauge{
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Value: proto.Float64(math.Inf(+1)),
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},
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TimestampMs: proto.Int64(54321),
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},
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&dto.Metric{
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Label: []*dto.LabelPair{
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&dto.LabelPair{
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Name: proto.String("labelname"),
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Value: proto.String("val1"),
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},
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},
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Gauge: &dto.Gauge{
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Value: proto.Float64(math.Inf(-1)),
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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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// 3: The evil summary, mixed with other types and funny comments.
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{
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in: `
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# TYPE my_summary summary
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my_summary{n1="val1",quantile="0.5"} 110
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decoy -1 -2
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my_summary{n1="val1",quantile="0.9"} 140 1
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my_summary_count{n1="val1"} 42
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# Latest timestamp wins in case of a summary.
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my_summary_sum{n1="val1"} 4711 2
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fake_sum{n1="val1"} 2001
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# TYPE another_summary summary
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another_summary_count{n2="val2",n1="val1"} 20
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my_summary_count{n2="val2",n1="val1"} 5 5
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another_summary{n1="val1",n2="val2",quantile=".3"} -1.2
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my_summary_sum{n1="val2"} 08 15
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my_summary{n1="val3", quantile="0.2"} 4711
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my_summary{n1="val1",n2="val2",quantile="-12.34",} NaN
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# some
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# funny comments
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# HELP
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# HELP
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# HELP my_summary
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# HELP my_summary
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`,
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out: []*dto.MetricFamily{
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&dto.MetricFamily{
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Name: proto.String("fake_sum"),
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Type: dto.MetricType_UNTYPED.Enum(),
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Metric: []*dto.Metric{
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&dto.Metric{
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Label: []*dto.LabelPair{
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&dto.LabelPair{
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Name: proto.String("n1"),
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Value: proto.String("val1"),
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},
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},
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Untyped: &dto.Untyped{
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Value: proto.Float64(2001),
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},
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},
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},
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},
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&dto.MetricFamily{
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Name: proto.String("decoy"),
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Type: dto.MetricType_UNTYPED.Enum(),
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Metric: []*dto.Metric{
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&dto.Metric{
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Untyped: &dto.Untyped{
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Value: proto.Float64(-1),
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},
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TimestampMs: proto.Int64(-2),
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},
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},
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},
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&dto.MetricFamily{
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Name: proto.String("my_summary"),
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Type: dto.MetricType_SUMMARY.Enum(),
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Metric: []*dto.Metric{
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&dto.Metric{
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Label: []*dto.LabelPair{
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&dto.LabelPair{
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Name: proto.String("n1"),
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Value: proto.String("val1"),
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},
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},
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Summary: &dto.Summary{
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SampleCount: proto.Uint64(42),
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SampleSum: proto.Float64(4711),
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Quantile: []*dto.Quantile{
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&dto.Quantile{
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Quantile: proto.Float64(0.5),
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Value: proto.Float64(110),
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},
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&dto.Quantile{
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Quantile: proto.Float64(0.9),
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Value: proto.Float64(140),
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},
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},
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},
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TimestampMs: proto.Int64(2),
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},
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&dto.Metric{
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Label: []*dto.LabelPair{
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&dto.LabelPair{
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Name: proto.String("n2"),
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Value: proto.String("val2"),
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},
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&dto.LabelPair{
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Name: proto.String("n1"),
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Value: proto.String("val1"),
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},
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},
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Summary: &dto.Summary{
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SampleCount: proto.Uint64(5),
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Quantile: []*dto.Quantile{
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&dto.Quantile{
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Quantile: proto.Float64(-12.34),
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Value: proto.Float64(math.NaN()),
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},
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},
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},
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TimestampMs: proto.Int64(5),
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},
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&dto.Metric{
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Label: []*dto.LabelPair{
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&dto.LabelPair{
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Name: proto.String("n1"),
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Value: proto.String("val2"),
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},
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},
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Summary: &dto.Summary{
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SampleSum: proto.Float64(8),
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},
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TimestampMs: proto.Int64(15),
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},
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&dto.Metric{
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Label: []*dto.LabelPair{
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&dto.LabelPair{
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Name: proto.String("n1"),
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Value: proto.String("val3"),
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},
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},
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Summary: &dto.Summary{
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Quantile: []*dto.Quantile{
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&dto.Quantile{
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Quantile: proto.Float64(0.2),
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Value: proto.Float64(4711),
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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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&dto.MetricFamily{
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Name: proto.String("another_summary"),
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Type: dto.MetricType_SUMMARY.Enum(),
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Metric: []*dto.Metric{
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&dto.Metric{
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Label: []*dto.LabelPair{
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&dto.LabelPair{
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Name: proto.String("n2"),
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Value: proto.String("val2"),
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},
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&dto.LabelPair{
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Name: proto.String("n1"),
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Value: proto.String("val1"),
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},
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},
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Summary: &dto.Summary{
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SampleCount: proto.Uint64(20),
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Quantile: []*dto.Quantile{
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&dto.Quantile{
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Quantile: proto.Float64(0.3),
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Value: proto.Float64(-1.2),
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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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},
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},
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// 4: The histogram.
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{
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in: `
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# HELP request_duration_microseconds The response latency.
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# TYPE request_duration_microseconds histogram
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request_duration_microseconds_bucket{le="100"} 123
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request_duration_microseconds_bucket{le="120"} 412
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request_duration_microseconds_bucket{le="144"} 592
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request_duration_microseconds_bucket{le="172.8"} 1524
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request_duration_microseconds_bucket{le="+Inf"} 2693
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request_duration_microseconds_sum 1.7560473e+06
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request_duration_microseconds_count 2693
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`,
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out: []*dto.MetricFamily{
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{
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Name: proto.String("request_duration_microseconds"),
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Help: proto.String("The response latency."),
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Type: dto.MetricType_HISTOGRAM.Enum(),
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Metric: []*dto.Metric{
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&dto.Metric{
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Histogram: &dto.Histogram{
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SampleCount: proto.Uint64(2693),
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SampleSum: proto.Float64(1756047.3),
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Bucket: []*dto.Bucket{
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&dto.Bucket{
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UpperBound: proto.Float64(100),
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CumulativeCount: proto.Uint64(123),
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},
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&dto.Bucket{
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UpperBound: proto.Float64(120),
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CumulativeCount: proto.Uint64(412),
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},
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&dto.Bucket{
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UpperBound: proto.Float64(144),
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CumulativeCount: proto.Uint64(592),
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},
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&dto.Bucket{
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UpperBound: proto.Float64(172.8),
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CumulativeCount: proto.Uint64(1524),
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},
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&dto.Bucket{
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UpperBound: proto.Float64(math.Inf(+1)),
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CumulativeCount: proto.Uint64(2693),
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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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},
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},
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}
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||
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|
||
|
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for i, scenario := range scenarios {
|
||
|
|
out, err := parser.TextToMetricFamilies(strings.NewReader(scenario.in))
|
||
|
|
if err != nil {
|
||
|
|
t.Errorf("%d. error: %s", i, err)
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
if expected, got := len(scenario.out), len(out); expected != got {
|
||
|
|
t.Errorf(
|
||
|
|
"%d. expected %d MetricFamilies, got %d",
|
||
|
|
i, expected, got,
|
||
|
|
)
|
||
|
|
}
|
||
|
|
for _, expected := range scenario.out {
|
||
|
|
got, ok := out[expected.GetName()]
|
||
|
|
if !ok {
|
||
|
|
t.Errorf(
|
||
|
|
"%d. expected MetricFamily %q, found none",
|
||
|
|
i, expected.GetName(),
|
||
|
|
)
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
if expected.String() != got.String() {
|
||
|
|
t.Errorf(
|
||
|
|
"%d. expected MetricFamily %s, got %s",
|
||
|
|
i, expected, got,
|
||
|
|
)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestTextParse(t *testing.T) {
|
||
|
|
testTextParse(t)
|
||
|
|
}
|
||
|
|
|
||
|
|
func BenchmarkTextParse(b *testing.B) {
|
||
|
|
for i := 0; i < b.N; i++ {
|
||
|
|
testTextParse(b)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func testTextParseError(t testing.TB) {
|
||
|
|
var scenarios = []struct {
|
||
|
|
in string
|
||
|
|
err string
|
||
|
|
}{
|
||
|
|
// 0: No new-line at end of input.
|
||
|
|
{
|
||
|
|
in: `
|
||
|
|
bla 3.14
|
||
|
|
blubber 42`,
|
||
|
|
err: "text format parsing error in line 3: unexpected end of input stream",
|
||
|
|
},
|
||
|
|
// 1: Invalid escape sequence in label value.
|
||
|
|
{
|
||
|
|
in: `metric{label="\t"} 3.14`,
|
||
|
|
err: "text format parsing error in line 1: invalid escape sequence",
|
||
|
|
},
|
||
|
|
// 2: Newline in label value.
|
||
|
|
{
|
||
|
|
in: `
|
||
|
|
metric{label="new
|
||
|
|
line"} 3.14
|
||
|
|
`,
|
||
|
|
err: `text format parsing error in line 2: label value "new" contains unescaped new-line`,
|
||
|
|
},
|
||
|
|
// 3:
|
||
|
|
{
|
||
|
|
in: `metric{@="bla"} 3.14`,
|
||
|
|
err: "text format parsing error in line 1: invalid label name for metric",
|
||
|
|
},
|
||
|
|
// 4:
|
||
|
|
{
|
||
|
|
in: `metric{__name__="bla"} 3.14`,
|
||
|
|
err: `text format parsing error in line 1: label name "__name__" is reserved`,
|
||
|
|
},
|
||
|
|
// 5:
|
||
|
|
{
|
||
|
|
in: `metric{label+="bla"} 3.14`,
|
||
|
|
err: "text format parsing error in line 1: expected '=' after label name",
|
||
|
|
},
|
||
|
|
// 6:
|
||
|
|
{
|
||
|
|
in: `metric{label=bla} 3.14`,
|
||
|
|
err: "text format parsing error in line 1: expected '\"' at start of label value",
|
||
|
|
},
|
||
|
|
// 7:
|
||
|
|
{
|
||
|
|
in: `
|
||
|
|
# TYPE metric summary
|
||
|
|
metric{quantile="bla"} 3.14
|
||
|
|
`,
|
||
|
|
err: "text format parsing error in line 3: expected float as value for 'quantile' label",
|
||
|
|
},
|
||
|
|
// 8:
|
||
|
|
{
|
||
|
|
in: `metric{label="bla"+} 3.14`,
|
||
|
|
err: "text format parsing error in line 1: unexpected end of label value",
|
||
|
|
},
|
||
|
|
// 9:
|
||
|
|
{
|
||
|
|
in: `metric{label="bla"} 3.14 2.72
|
||
|
|
`,
|
||
|
|
err: "text format parsing error in line 1: expected integer as timestamp",
|
||
|
|
},
|
||
|
|
// 10:
|
||
|
|
{
|
||
|
|
in: `metric{label="bla"} 3.14 2 3
|
||
|
|
`,
|
||
|
|
err: "text format parsing error in line 1: spurious string after timestamp",
|
||
|
|
},
|
||
|
|
// 11:
|
||
|
|
{
|
||
|
|
in: `metric{label="bla"} blubb
|
||
|
|
`,
|
||
|
|
err: "text format parsing error in line 1: expected float as value",
|
||
|
|
},
|
||
|
|
// 12:
|
||
|
|
{
|
||
|
|
in: `
|
||
|
|
# HELP metric one
|
||
|
|
# HELP metric two
|
||
|
|
`,
|
||
|
|
err: "text format parsing error in line 3: second HELP line for metric name",
|
||
|
|
},
|
||
|
|
// 13:
|
||
|
|
{
|
||
|
|
in: `
|
||
|
|
# TYPE metric counter
|
||
|
|
# TYPE metric untyped
|
||
|
|
`,
|
||
|
|
err: `text format parsing error in line 3: second TYPE line for metric name "metric", or TYPE reported after samples`,
|
||
|
|
},
|
||
|
|
// 14:
|
||
|
|
{
|
||
|
|
in: `
|
||
|
|
metric 4.12
|
||
|
|
# TYPE metric counter
|
||
|
|
`,
|
||
|
|
err: `text format parsing error in line 3: second TYPE line for metric name "metric", or TYPE reported after samples`,
|
||
|
|
},
|
||
|
|
// 14:
|
||
|
|
{
|
||
|
|
in: `
|
||
|
|
# TYPE metric bla
|
||
|
|
`,
|
||
|
|
err: "text format parsing error in line 2: unknown metric type",
|
||
|
|
},
|
||
|
|
// 15:
|
||
|
|
{
|
||
|
|
in: `
|
||
|
|
# TYPE met-ric
|
||
|
|
`,
|
||
|
|
err: "text format parsing error in line 2: invalid metric name in comment",
|
||
|
|
},
|
||
|
|
// 16:
|
||
|
|
{
|
||
|
|
in: `@invalidmetric{label="bla"} 3.14 2`,
|
||
|
|
err: "text format parsing error in line 1: invalid metric name",
|
||
|
|
},
|
||
|
|
// 17:
|
||
|
|
{
|
||
|
|
in: `{label="bla"} 3.14 2`,
|
||
|
|
err: "text format parsing error in line 1: invalid metric name",
|
||
|
|
},
|
||
|
|
// 18:
|
||
|
|
{
|
||
|
|
in: `
|
||
|
|
# TYPE metric histogram
|
||
|
|
metric_bucket{le="bla"} 3.14
|
||
|
|
`,
|
||
|
|
err: "text format parsing error in line 3: expected float as value for 'le' label",
|
||
|
|
},
|
||
|
|
}
|
||
|
|
|
||
|
|
for i, scenario := range scenarios {
|
||
|
|
_, err := parser.TextToMetricFamilies(strings.NewReader(scenario.in))
|
||
|
|
if err == nil {
|
||
|
|
t.Errorf("%d. expected error, got nil", i)
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
if expected, got := scenario.err, err.Error(); strings.Index(got, expected) != 0 {
|
||
|
|
t.Errorf(
|
||
|
|
"%d. expected error starting with %q, got %q",
|
||
|
|
i, expected, got,
|
||
|
|
)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestTextParseError(t *testing.T) {
|
||
|
|
testTextParseError(t)
|
||
|
|
}
|
||
|
|
|
||
|
|
func BenchmarkParseError(b *testing.B) {
|
||
|
|
for i := 0; i < b.N; i++ {
|
||
|
|
testTextParseError(b)
|
||
|
|
}
|
||
|
|
}
|