forked from mirrors/statsd_exporter
328 lines
8.2 KiB
Go
328 lines
8.2 KiB
Go
// Copyright 2013 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 main
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import (
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"reflect"
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"testing"
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)
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func TestHandlePacket(t *testing.T) {
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scenarios := []struct {
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name string
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in string
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out Events
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}{
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{
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name: "empty",
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}, {
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name: "simple counter",
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in: "foo:2|c",
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out: Events{
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&CounterEvent{
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metricName: "foo",
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value: 2,
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labels: map[string]string{},
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},
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},
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}, {
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name: "simple gauge",
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in: "foo:3|g",
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out: Events{
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&GaugeEvent{
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metricName: "foo",
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value: 3,
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labels: map[string]string{},
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},
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},
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}, {
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name: "gauge decrement",
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in: "foo:-10|g",
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out: Events{
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&GaugeEvent{
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metricName: "foo",
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value: -10,
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relative: true,
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labels: map[string]string{},
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},
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},
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}, {
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name: "simple timer",
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in: "foo:200|ms",
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out: Events{
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&TimerEvent{
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metricName: "foo",
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value: 200,
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labels: map[string]string{},
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},
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},
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}, {
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name: "simple histogram",
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in: "foo:200|h",
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out: Events{
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&TimerEvent{
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metricName: "foo",
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value: 200,
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labels: map[string]string{},
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},
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},
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}, {
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name: "simple distribution",
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in: "foo:200|d",
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out: Events{
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&TimerEvent{
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metricName: "foo",
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value: 200,
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labels: map[string]string{},
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},
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},
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}, {
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name: "datadog tag extension",
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in: "foo:100|c|#tag1:bar,tag2:baz",
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out: Events{
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&CounterEvent{
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metricName: "foo",
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value: 100,
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labels: map[string]string{"tag1": "bar", "tag2": "baz"},
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},
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},
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}, {
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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",
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out: Events{
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&CounterEvent{
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metricName: "foo",
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value: 100,
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labels: map[string]string{"tag1": "bar", "tag2": "baz"},
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},
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},
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}, {
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name: "datadog tag extension with tag keys unsupported by prometheus",
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in: "foo:100|c|#09digits:0,tag.with.dots:1",
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out: Events{
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&CounterEvent{
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metricName: "foo",
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value: 100,
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labels: map[string]string{"_09digits": "0", "tag_with_dots": "1"},
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},
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},
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}, {
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name: "datadog tag extension with valueless tags: ignored",
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in: "foo:100|c|#tag_without_a_value",
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out: Events{
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&CounterEvent{
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metricName: "foo",
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value: 100,
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labels: map[string]string{},
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},
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},
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}, {
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name: "datadog tag extension with valueless tags (edge case)",
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in: "foo:100|c|#tag_without_a_value,tag:value",
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out: Events{
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&CounterEvent{
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metricName: "foo",
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value: 100,
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labels: map[string]string{"tag": "value"},
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},
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},
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}, {
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name: "datadog tag extension with empty tags (edge case)",
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in: "foo:100|c|#tag:value,,",
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out: Events{
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&CounterEvent{
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metricName: "foo",
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value: 100,
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labels: map[string]string{"tag": "value"},
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},
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},
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}, {
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name: "datadog tag extension with sampling",
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in: "foo:100|c|@0.1|#tag1:bar,#tag2:baz",
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out: Events{
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&CounterEvent{
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metricName: "foo",
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value: 1000,
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labels: map[string]string{"tag1": "bar", "tag2": "baz"},
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},
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},
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}, {
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name: "histogram with sampling",
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in: "foo:0.01|h|@0.1|#tag1:bar,#tag2:baz",
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out: Events{
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&TimerEvent{
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metricName: "foo",
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value: 0.01,
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labels: map[string]string{"tag1": "bar", "tag2": "baz"},
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},
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},
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}, {
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name: "datadog tag extension with multiple colons",
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in: "foo:100|c|@0.1|#tag1:foo:bar",
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out: Events{
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&CounterEvent{
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metricName: "foo",
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value: 1000,
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labels: map[string]string{"tag1": "foo:bar"},
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},
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},
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}, {
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name: "datadog tag extension with invalid utf8 tag values",
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in: "foo:100|c|@0.1|#tag:\xc3\x28invalid",
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}, {
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name: "datadog tag extension with both valid and invalid utf8 tag values",
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in: "foo:100|c|@0.1|#tag1:valid,tag2:\xc3\x28invalid",
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}, {
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name: "multiple metrics with invalid datadog utf8 tag values",
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in: "foo:200|c|#tag:value\nfoo:300|c|#tag:\xc3\x28invalid",
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out: Events{
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&CounterEvent{
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metricName: "foo",
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value: 200,
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labels: map[string]string{"tag": "value"},
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},
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},
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}, {
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name: "combined multiline metrics",
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in: "foo:200|ms:300|ms:5|c|@0.1:6|g\nbar:1|c:5|ms",
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out: Events{
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&TimerEvent{
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metricName: "foo",
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value: 200,
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labels: map[string]string{},
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},
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&TimerEvent{
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metricName: "foo",
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value: 300,
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labels: map[string]string{},
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},
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&CounterEvent{
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metricName: "foo",
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value: 50,
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labels: map[string]string{},
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},
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&GaugeEvent{
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metricName: "foo",
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value: 6,
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labels: map[string]string{},
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},
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&CounterEvent{
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metricName: "bar",
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value: 1,
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labels: map[string]string{},
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},
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&TimerEvent{
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metricName: "bar",
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value: 5,
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labels: map[string]string{},
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},
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},
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}, {
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name: "timings with sampling factor",
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in: "foo.timing:0.5|ms|@0.1",
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out: Events{
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&TimerEvent{metricName: "foo.timing", value: 0.5, labels: map[string]string{}},
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&TimerEvent{metricName: "foo.timing", value: 0.5, labels: map[string]string{}},
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&TimerEvent{metricName: "foo.timing", value: 0.5, labels: map[string]string{}},
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&TimerEvent{metricName: "foo.timing", value: 0.5, labels: map[string]string{}},
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&TimerEvent{metricName: "foo.timing", value: 0.5, labels: map[string]string{}},
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&TimerEvent{metricName: "foo.timing", value: 0.5, labels: map[string]string{}},
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&TimerEvent{metricName: "foo.timing", value: 0.5, labels: map[string]string{}},
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&TimerEvent{metricName: "foo.timing", value: 0.5, labels: map[string]string{}},
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&TimerEvent{metricName: "foo.timing", value: 0.5, labels: map[string]string{}},
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&TimerEvent{metricName: "foo.timing", value: 0.5, labels: map[string]string{}},
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},
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}, {
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name: "bad line",
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in: "foo",
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}, {
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name: "bad component",
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in: "foo:1",
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}, {
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name: "bad value",
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in: "foo:1o|c",
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}, {
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name: "illegal sampling factor",
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in: "foo:1|c|@bar",
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out: Events{
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&CounterEvent{
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metricName: "foo",
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value: 1,
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labels: map[string]string{},
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},
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},
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}, {
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name: "zero sampling factor",
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in: "foo:2|c|@0",
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out: Events{
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&CounterEvent{
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metricName: "foo",
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value: 2,
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labels: map[string]string{},
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},
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},
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}, {
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name: "illegal stat type",
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in: "foo:2|t",
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},
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{
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name: "empty metric name",
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in: ":100|ms",
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},
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{
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name: "empty component",
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in: "foo:1|c|",
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},
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{
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name: "invalid utf8",
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in: "invalid\xc3\x28utf8:1|c",
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},
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{
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name: "some invalid utf8",
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in: "valid_utf8:1|c\ninvalid\xc3\x28utf8:1|c",
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out: Events{
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&CounterEvent{
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metricName: "valid_utf8",
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value: 1,
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labels: map[string]string{},
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},
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},
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},
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}
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for k, l := range []statsDPacketHandler{&StatsDUDPListener{}, &mockStatsDTCPListener{}} {
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events := make(chan Events, 32)
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l.SetEventHandler(&unbufferedEventHandler{c: events})
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for i, scenario := range scenarios {
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l.handlePacket([]byte(scenario.in))
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le := len(events)
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// Flatten actual events.
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actual := Events{}
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for i := 0; i < le; i++ {
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actual = append(actual, <-events...)
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}
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if len(actual) != len(scenario.out) {
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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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}
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for j, expected := range scenario.out {
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if !reflect.DeepEqual(&expected, &actual[j]) {
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t.Fatalf("%d.%d.%d. Expected %#v, got %#v in scenario '%s'", k, i, j, expected, actual[j], scenario.name)
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}
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}
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}
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}
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}
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