statsd_exporter/pkg/mapper/mapper_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
//
// 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.
package mapper
import (
"testing"
)
type mappings map[string]struct {
name string
labels map[string]string
quantiles []metricObjective
notPresent bool
}
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func TestMetricMapperYAML(t *testing.T) {
scenarios := []struct {
config string
configBad bool
mappings mappings
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}{
// Empty config.
{},
// Config with several mapping definitions.
{
config: `---
mappings:
- match: test.dispatcher.*.*.*
name: "dispatch_events"
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labels:
processor: "$1"
action: "$2"
result: "$3"
job: "test_dispatcher"
- match: test.my-dispatch-host01.name.dispatcher.*.*.*
name: "host_dispatch_events"
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labels:
processor: "$1"
action: "$2"
result: "$3"
job: "test_dispatcher"
- match: request_time.*.*.*.*.*.*.*.*.*.*.*.*
name: "tyk_http_request"
labels:
method_and_path: "${1}"
response_code: "${2}"
apikey: "${3}"
apiversion: "${4}"
apiname: "${5}"
apiid: "${6}"
ipv4_t1: "${7}"
ipv4_t2: "${8}"
ipv4_t3: "${9}"
ipv4_t4: "${10}"
orgid: "${11}"
oauthid: "${12}"
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- match: "*.*"
name: "catchall"
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labels:
first: "$1"
second: "$2"
third: "$3"
job: "$1-$2-$3"
- match: (.*)\.(.*)-(.*)\.(.*)
match_type: regex
name: "proxy_requests_total"
labels:
job: "$1"
protocol: "$2"
endpoint: "$3"
result: "$4"
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`,
mappings: mappings{
"test.dispatcher.FooProcessor.send.succeeded": {
name: "dispatch_events",
labels: map[string]string{
"processor": "FooProcessor",
"action": "send",
"result": "succeeded",
"job": "test_dispatcher",
},
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},
"test.my-dispatch-host01.name.dispatcher.FooProcessor.send.succeeded": {
name: "host_dispatch_events",
labels: map[string]string{
"processor": "FooProcessor",
"action": "send",
"result": "succeeded",
"job": "test_dispatcher",
},
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},
"request_time.get/threads/1/posts.200.00000000.nonversioned.discussions.a11bbcdf0ac64ec243658dc64b7100fb.172.20.0.1.12ba97b7eaa1a50001000001.": {
name: "tyk_http_request",
labels: map[string]string{
"method_and_path": "get/threads/1/posts",
"response_code": "200",
"apikey": "00000000",
"apiversion": "nonversioned",
"apiname": "discussions",
"apiid": "a11bbcdf0ac64ec243658dc64b7100fb",
"ipv4_t1": "172",
"ipv4_t2": "20",
"ipv4_t3": "0",
"ipv4_t4": "1",
"orgid": "12ba97b7eaa1a50001000001",
"oauthid": "",
},
},
"foo.bar": {
name: "catchall",
labels: map[string]string{
"first": "foo",
"second": "bar",
"third": "",
"job": "foo-bar-",
},
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},
"foo.bar.baz": {},
"proxy-1.http-goober.success": {
name: "proxy_requests_total",
labels: map[string]string{
"job": "proxy-1",
"protocol": "http",
"endpoint": "goober",
"result": "success",
},
},
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},
},
// Config with bad regex reference.
{
config: `---
mappings:
- match: test.*
name: "name"
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labels:
label: "$1_foo"
`,
mappings: mappings{
"test.a": {
name: "name",
labels: map[string]string{
"label": "",
},
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},
},
},
// Config with good regex reference.
{
config: `
mappings:
- match: test.*
name: "name"
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labels:
label: "${1}_foo"
`,
mappings: mappings{
"test.a": {
name: "name",
labels: map[string]string{
"label": "a_foo",
},
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},
},
},
// Config with bad metric line.
{
config: `---
mappings:
- match: bad--metric-line.*.*
name: "foo"
labels: {}
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`,
configBad: true,
},
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// Config with dynamic metric name.
{
config: `---
mappings:
- match: test1.*.*
name: "$1"
labels: {}
- match: test2.*.*
name: "${1}_$2"
labels: {}
- match: test3\.(\w+)\.(\w+)
match_type: regex
name: "${2}_$1"
labels: {}
`,
mappings: mappings{
"test1.total_requests.count": {
name: "total_requests",
},
"test2.total_requests.count": {
name: "total_requests_count",
},
"test3.total_requests.count": {
name: "count_total_requests",
},
},
},
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// Config with bad metric name.
{
config: `---
mappings:
- match: test.*.*
name: "0foo"
labels: {}
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`,
configBad: true,
},
// Config with no metric name.
{
config: `---
mappings:
- match: test.*.*
labels:
this: "$1"
`,
configBad: true,
},
// Config with no mappings.
{
config: ``,
mappings: mappings{},
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},
// Config without a trailing newline.
{
config: `mappings:
- match: test.*
name: "name"
labels:
label: "${1}_foo"`,
mappings: mappings{
"test.a": {
name: "name",
labels: map[string]string{
"label": "a_foo",
},
},
},
},
// Config with an improperly escaped *.
{
config: `
mappings:
- match: *.test.*
name: "name"
labels:
label: "${1}_foo"`,
configBad: true,
},
// Config with a properly escaped *.
{
config: `
mappings:
- match: "*.test.*"
name: "name"
labels:
label: "${2}_foo"`,
mappings: mappings{
"foo.test.a": {
name: "name",
labels: map[string]string{
"label": "a_foo",
},
},
},
},
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// Config with good timer type.
{
config: `---
mappings:
- match: test.*.*
timer_type: summary
name: "foo"
labels: {}
quantiles:
- quantile: 0.42
error: 0.04
- quantile: 0.7
error: 0.002
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`,
mappings: mappings{
"test.*.*": {
name: "foo",
labels: map[string]string{},
quantiles: []metricObjective{
{Quantile: 0.42, Error: 0.04},
{Quantile: 0.7, Error: 0.002},
},
},
},
},
{
config: `---
mappings:
- match: test1.*.*
timer_type: summary
name: "foo"
labels: {}
`,
mappings: mappings{
"test1.*.*": {
name: "foo",
labels: map[string]string{},
quantiles: []metricObjective{
{Quantile: 0.5, Error: 0.05},
{Quantile: 0.9, Error: 0.01},
{Quantile: 0.99, Error: 0.001},
},
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},
},
},
// Config with bad timer type.
{
config: `---
mappings:
- match: test.*.*
timer_type: wrong
name: "foo"
labels: {}
`,
configBad: true,
},
// Config with good metric type.
{
config: `---
mappings:
- match: test.*.*
match_metric_type: counter
name: "foo"
labels: {}
`,
},
// Config with bad metric type matcher.
{
config: `---
mappings:
- match: test.*.*
match_metric_type: wrong
name: "foo"
labels: {}
`,
configBad: true,
},
//Config with uncompilable regex.
{
config: `---
mappings:
- match: "*\\.foo"
match_type: regex
name: "foo"
labels: {}
`,
configBad: true,
},
//Config with non-matched metric.
{
config: `---
mappings:
- match: foo.*.*
timer_type: summary
name: "foo"
labels: {}
`,
mappings: mappings{
"test.1.2": {
name: "test_1_2",
labels: map[string]string{},
notPresent: true,
},
},
},
//Config with no name.
{
config: `---
mappings:
- match: *\.foo
match_type: regex
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labels:
bar: "foo"
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`,
configBad: true,
},
// Example from the README.
{
config: `
mappings:
- match: test.dispatcher.*.*.*
name: "dispatcher_events_total"
labels:
processor: "$1"
action: "$2"
outcome: "$3"
job: "test_dispatcher"
- match: "*.signup.*.*"
name: "signup_events_total"
labels:
provider: "$2"
outcome: "$3"
job: "${1}_server"
`,
mappings: mappings{
"test.dispatcher.FooProcessor.send.success": {
name: "dispatcher_events_total",
labels: map[string]string{
"processor": "FooProcessor",
"action": "send",
"outcome": "success",
"job": "test_dispatcher",
},
},
"foo_product.signup.facebook.failure": {
name: "signup_events_total",
labels: map[string]string{
"provider": "facebook",
"outcome": "failure",
"job": "foo_product_server",
},
},
"test.web-server.foo.bar": {
name: "test_web_server_foo_bar",
labels: map[string]string{},
},
},
},
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// Config that drops all.
{
config: `mappings:
- match: .
match_type: regex
name: "drop"
action: drop`,
mappings: mappings{
"test.a": {},
"abc": {},
},
},
// Config that has a catch-all to drop all.
{
config: `mappings:
- match: web.*
name: "web"
labels:
site: "$1"
- match: .
match_type: regex
name: "drop"
action: drop`,
mappings: mappings{
"test.a": {},
"web.localhost": {
name: "web",
labels: map[string]string{
"site": "localhost",
},
},
},
},
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}
mapper := MetricMapper{}
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for i, scenario := range scenarios {
err := mapper.InitFromYAMLString(scenario.config)
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if err != nil && !scenario.configBad {
t.Fatalf("%d. Config load error: %s %s", i, scenario.config, err)
}
if err == nil && scenario.configBad {
t.Fatalf("%d. Expected bad config, but loaded ok: %s", i, scenario.config)
}
var dummyMetricType MetricType = ""
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for metric, mapping := range scenario.mappings {
m, labels, present := mapper.GetMapping(metric, dummyMetricType)
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if present && mapping.name != "" && m.Name != mapping.name {
t.Fatalf("%d.%q: Expected name %v, got %v", i, metric, m.Name, mapping.name)
}
if mapping.notPresent && present {
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t.Fatalf("%d.%q: Expected metric to not be present", i, metric)
}
if len(labels) != len(mapping.labels) {
t.Fatalf("%d.%q: Expected %d labels, got %d", i, metric, len(mapping.labels), len(labels))
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}
for label, value := range labels {
if mapping.labels[label] != value {
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t.Fatalf("%d.%q: Expected labels %v, got %v", i, metric, mapping, labels)
}
}
if len(mapping.quantiles) != 0 {
if len(mapping.quantiles) != len(m.Quantiles) {
t.Fatalf("%d.%q: Expected %d quantiles, got %d", i, metric, len(mapping.quantiles), len(m.Quantiles))
}
for i, quantile := range mapping.quantiles {
if quantile.Quantile != m.Quantiles[i].Quantile {
t.Fatalf("%d.%q: Expected quantile %v, got %v", i, metric, m.Quantiles[i].Quantile, quantile.Quantile)
}
if quantile.Error != m.Quantiles[i].Error {
t.Fatalf("%d.%q: Expected Error margin %v, got %v", i, metric, m.Quantiles[i].Error, quantile.Error)
}
}
}
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}
}
}
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func TestAction(t *testing.T) {
scenarios := []struct {
config string
configBad bool
expectedAction ActionType
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}{
{
// no action set
config: `---
mappings:
- match: test.*.*
name: "foo"
`,
configBad: false,
expectedAction: ActionTypeMap,
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},
{
// map action set
config: `---
mappings:
- match: test.*.*
name: "foo"
action: map
`,
configBad: false,
expectedAction: ActionTypeMap,
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},
{
// drop action set
config: `---
mappings:
- match: test.*.*
name: "foo"
action: drop
`,
configBad: false,
expectedAction: ActionTypeDrop,
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},
{
// invalid action set
config: `---
mappings:
- match: test.*.*
name: "foo"
action: xyz
`,
configBad: true,
expectedAction: ActionTypeDrop,
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},
}
for i, scenario := range scenarios {
mapper := MetricMapper{}
err := mapper.InitFromYAMLString(scenario.config)
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if err != nil && !scenario.configBad {
t.Fatalf("%d. Config load error: %s %s", i, scenario.config, err)
}
if err == nil && scenario.configBad {
t.Fatalf("%d. Expected bad config, but loaded ok: %s", i, scenario.config)
}
if !scenario.configBad {
a := mapper.Mappings[0].Action
if scenario.expectedAction != a {
t.Fatalf("%d: Expected action %v, got %v", i, scenario.expectedAction, a)
}
}
}
}