statsd_exporter/bridge_test.go

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// Copyright 2013 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
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//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
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package main
import (
"reflect"
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"testing"
)
func TestHandlePacket(t *testing.T) {
scenarios := []struct {
name string
in string
out Events
}{
{
name: "empty",
}, {
name: "simple counter",
in: "foo:2|c",
out: Events{
&CounterEvent{
metricName: "foo",
value: 2,
labels: map[string]string{},
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},
},
}, {
name: "simple gauge",
in: "foo:3|g",
out: Events{
&GaugeEvent{
metricName: "foo",
value: 3,
labels: map[string]string{},
},
},
}, {
name: "gauge decrement",
in: "foo:-10|g",
out: Events{
&GaugeEvent{
metricName: "foo",
value: -10,
relative: true,
labels: map[string]string{},
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},
},
}, {
name: "simple timer",
in: "foo:200|ms",
out: Events{
&TimerEvent{
metricName: "foo",
value: 200,
labels: map[string]string{},
},
},
}, {
name: "datadog tag extension",
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in: "foo:100|c|#tag1:bar,tag2:baz",
out: Events{
&CounterEvent{
metricName: "foo",
value: 100,
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labels: map[string]string{"tag1": "bar", "tag2": "baz"},
},
},
}, {
name: "datadog tag extension with # in all keys (as sent by datadog php client)",
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in: "foo:100|c|#tag1:bar,#tag2:baz",
out: Events{
&CounterEvent{
metricName: "foo",
value: 100,
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labels: map[string]string{"tag1": "bar", "tag2": "baz"},
},
},
}, {
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name: "datadog tag extension with tag keys unsupported by prometheus",
in: "foo:100|c|#09digits:0,tag.with.dots:1",
out: Events{
&CounterEvent{
metricName: "foo",
value: 100,
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labels: map[string]string{"_09digits": "0", "tag_with_dots": "1"},
},
},
}, {
name: "datadog tag extension with valueless tags: ignored",
in: "foo:100|c|#tag_without_a_value",
out: Events{
&CounterEvent{
metricName: "foo",
value: 100,
labels: map[string]string{},
},
},
}, {
name: "datadog tag extension with valueless tags (edge case)",
in: "foo:100|c|#tag_without_a_value,tag:value",
out: Events{
&CounterEvent{
metricName: "foo",
value: 100,
labels: map[string]string{"tag": "value"},
},
},
}, {
name: "datadog tag extension with empty tags (edge case)",
in: "foo:100|c|#tag:value,,",
out: Events{
&CounterEvent{
metricName: "foo",
value: 100,
labels: map[string]string{"tag": "value"},
},
},
}, {
name: "datadog tag extension with sampling",
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in: "foo:100|c|@0.1|#tag1:bar,#tag2:baz",
out: Events{
&CounterEvent{
metricName: "foo",
value: 1000,
labels: map[string]string{"tag1": "bar", "tag2": "baz"},
},
},
}, {
name: "datadog tag extension with multiple colons",
in: "foo:100|c|@0.1|#tag1:foo:bar",
out: Events{
&CounterEvent{
metricName: "foo",
value: 1000,
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labels: map[string]string{"tag1": "foo:bar"},
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},
},
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}, {
name: "datadog tag extension with invalid utf8 tag values",
in: "foo:100|c|@0.1|#tag:\xc3\x28invalid",
}, {
name: "datadog tag extension with both valid and invalid utf8 tag values",
in: "foo:100|c|@0.1|#tag1:valid,tag2:\xc3\x28invalid",
}, {
name: "multiple metrics with invalid datadog utf8 tag values",
in: "foo:200|c|#tag:value\nfoo:300|c|#tag:\xc3\x28invalid",
out: Events{
&CounterEvent{
metricName: "foo",
value: 200,
labels: map[string]string{"tag": "value"},
},
},
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}, {
name: "combined multiline metrics",
in: "foo:200|ms:300|ms:5|c|@0.1:6|g\nbar:1|c:5|ms",
out: Events{
&TimerEvent{
metricName: "foo",
value: 200,
labels: map[string]string{},
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},
&TimerEvent{
metricName: "foo",
value: 300,
labels: map[string]string{},
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},
&CounterEvent{
metricName: "foo",
value: 50,
labels: map[string]string{},
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},
&GaugeEvent{
metricName: "foo",
value: 6,
labels: map[string]string{},
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},
&CounterEvent{
metricName: "bar",
value: 1,
labels: map[string]string{},
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},
&TimerEvent{
metricName: "bar",
value: 5,
labels: map[string]string{},
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},
},
}, {
name: "timings with sampling factor",
in: "foo.timing:0.5|ms|@0.1",
out: Events{
&TimerEvent{metricName: "foo.timing", value: 0.5, labels: map[string]string{}},
&TimerEvent{metricName: "foo.timing", value: 0.5, labels: map[string]string{}},
&TimerEvent{metricName: "foo.timing", value: 0.5, labels: map[string]string{}},
&TimerEvent{metricName: "foo.timing", value: 0.5, labels: map[string]string{}},
&TimerEvent{metricName: "foo.timing", value: 0.5, labels: map[string]string{}},
&TimerEvent{metricName: "foo.timing", value: 0.5, labels: map[string]string{}},
&TimerEvent{metricName: "foo.timing", value: 0.5, labels: map[string]string{}},
&TimerEvent{metricName: "foo.timing", value: 0.5, labels: map[string]string{}},
&TimerEvent{metricName: "foo.timing", value: 0.5, labels: map[string]string{}},
&TimerEvent{metricName: "foo.timing", value: 0.5, labels: map[string]string{}},
},
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}, {
name: "bad line",
in: "foo",
}, {
name: "bad component",
in: "foo:1",
}, {
name: "bad value",
in: "foo:1o|c",
}, {
name: "illegal sampling factor",
in: "foo:1|c|@bar",
out: Events{
&CounterEvent{
metricName: "foo",
value: 1,
labels: map[string]string{},
},
},
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}, {
name: "zero sampling factor",
in: "foo:2|c|@0",
out: Events{
&CounterEvent{
metricName: "foo",
value: 2,
labels: map[string]string{},
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},
},
}, {
name: "illegal stat type",
in: "foo:2|t",
},
{
name: "empty metric name",
in: ":100|ms",
},
{
name: "empty component",
in: "foo:1|c|",
},
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{
name: "invalid utf8",
in: "invalid\xc3\x28utf8:1|c",
},
{
name: "some invalid utf8",
in: "valid_utf8:1|c\ninvalid\xc3\x28utf8:1|c",
out: Events{
&CounterEvent{
metricName: "valid_utf8",
value: 1,
labels: map[string]string{},
},
},
},
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}
for k, l := range []statsDPacketHandler{&StatsDUDPListener{}, &mockStatsDTCPListener{}} {
events := make(chan Events, 32)
for i, scenario := range scenarios {
l.handlePacket([]byte(scenario.in), events)
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le := len(events)
// Flatten actual events.
actual := Events{}
for i := 0; i < le; i++ {
actual = append(actual, <-events...)
}
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if len(actual) != len(scenario.out) {
t.Fatalf("%d.%d. Expected %d events, got %d in scenario '%s'", k, i, len(scenario.out), len(actual), scenario.name)
}
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for j, expected := range scenario.out {
if !reflect.DeepEqual(&expected, &actual[j]) {
t.Fatalf("%d.%d.%d. Expected %#v, got %#v in scenario '%s'", k, i, j, expected, actual[j], scenario.name)
}
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}
}
}
}