// 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" "time" ) type mappings []struct { statsdMetric string name string labels map[string]string quantiles []metricObjective notPresent bool ttl time.Duration metricType MetricType } func TestMetricMapperYAML(t *testing.T) { scenarios := []struct { config string configBad bool mappings mappings }{ // Empty config. {}, // Config with several mapping definitions. { config: `--- mappings: - match: test.dispatcher.*.*.* name: "dispatch_events" labels: processor: "$1" action: "$2" result: "$3" job: "test_dispatcher" - match: test.my-dispatch-host01.name.dispatcher.*.*.* name: "host_dispatch_events" 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}" - match: "*.*" name: "catchall" 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: "$4" `, mappings: mappings{ { statsdMetric: "test.dispatcher.FooProcessor.send.succeeded", name: "dispatch_events", labels: map[string]string{ "processor": "FooProcessor", "action": "send", "result": "succeeded", "job": "test_dispatcher", }, }, { statsdMetric: "test.my-dispatch-host01.name.dispatcher.FooProcessor.send.succeeded", name: "host_dispatch_events", labels: map[string]string{ "processor": "FooProcessor", "action": "send", "result": "succeeded", "job": "test_dispatcher", }, }, { statsdMetric: "request_time.get/threads/1/posts.200.00000000.nonversioned.discussions.a11bbcdf0ac64ec243658dc64b7100fb.172.20.0.1.12ba97b7eaa1a50001000001.", name: "tyk_http_request", labels: map[string]string{ "method_and_path": "get/threads/1/posts", "response_code": "200", "apikey": "00000000", "apiversion": "nonversioned", "apiname": "discussions", "apiid": "a11bbcdf0ac64ec243658dc64b7100fb", "ipv4_t1": "172", "ipv4_t2": "20", "ipv4_t3": "0", "ipv4_t4": "1", "orgid": "12ba97b7eaa1a50001000001", "oauthid": "", }, }, { statsdMetric: "foo.bar", name: "catchall", labels: map[string]string{ "first": "foo", "second": "bar", "third": "", "job": "foo-bar-", }, }, { statsdMetric: "foo.bar.baz", }, { statsdMetric: "proxy-1.http-goober.success", name: "proxy_requests_total", labels: map[string]string{ "job": "proxy-1", "protocol": "http", "endpoint": "goober", "result": "success", }, }, }, }, //Config with backtracking { config: ` defaults: glob_disable_ordering: true mappings: - match: backtrack.*.bbb name: "testb" labels: label: "${1}_foo" - match: backtrack.justatest.aaa name: "testa" labels: label: "${1}_foo" `, mappings: mappings{ { statsdMetric: "backtrack.good.bbb", name: "testb", labels: map[string]string{ "label": "good_foo", }, }, { statsdMetric: "backtrack.justatest.bbb", name: "testb", labels: map[string]string{ "label": "justatest_foo", }, }, { statsdMetric: "backtrack.justatest.aaa", name: "testa", labels: map[string]string{ "label": "_foo", }, }, }, }, //Config with backtracking, the non-matched rule has star(s) // A metric like full.name.anothertest will first match full.name.* and then tries // to match *.dummy.* and then failed. // This test case makes sure the captures in the non-matched later rule // doesn't affect the captures in the first matched rule. { config: ` defaults: glob_disable_ordering: false mappings: - match: '*.dummy.*' name: metric_one labels: system: $1 attribute: $2 - match: 'full.name.*' name: metric_two labels: system: static attribute: $1 `, mappings: mappings{ { statsdMetric: "whatever.dummy.test", name: "metric_one", labels: map[string]string{ "system": "whatever", "attribute": "test", }, }, { statsdMetric: "full.name.anothertest", name: "metric_two", labels: map[string]string{ "system": "static", "attribute": "anothertest", }, }, }, }, //Config with super sets, disables ordering { config: ` defaults: glob_disable_ordering: true mappings: - match: noorder.*.* name: "testa" labels: label: "${1}_foo" - match: noorder.*.bbb name: "testb" labels: label: "${1}_foo" - match: noorder.ccc.bbb name: "testc" labels: label: "ccc_foo" `, mappings: mappings{ { statsdMetric: "noorder.good.bbb", name: "testb", labels: map[string]string{ "label": "good_foo", }, }, { statsdMetric: "noorder.ccc.bbb", name: "testc", labels: map[string]string{ "label": "ccc_foo", }, }, }, }, //Config with super sets, keeps ordering { config: ` defaults: glob_disable_ordering: false mappings: - match: order.*.* name: "testa" labels: label: "${1}_foo" - match: order.*.bbb name: "testb" labels: label: "${1}_foo" `, mappings: mappings{ { statsdMetric: "order.good.bbb", name: "testa", labels: map[string]string{ "label": "good_foo", }, }, }, }, // Config with bad regex reference. { config: `--- mappings: - match: test.* name: "name" labels: label: "$1_foo" `, mappings: mappings{ { statsdMetric: "test.a", name: "name", labels: map[string]string{ "label": "", }, }, }, }, // Config with good regex reference. { config: ` mappings: - match: test.* name: "name" labels: label: "${1}_foo" `, mappings: mappings{ { statsdMetric: "test.a", name: "name", labels: map[string]string{ "label": "a_foo", }, }, }, }, // Config with bad metric line. { config: `--- mappings: - match: bad--metric-line.*.* name: "foo" labels: {} `, configBad: true, }, // 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{ { statsdMetric: "test1.total_requests.count", name: "total_requests", }, { statsdMetric: "test2.total_requests.count", name: "total_requests_count", }, { statsdMetric: "test3.total_requests.count", name: "count_total_requests", }, }, }, // Config with bad metric name. { config: `--- mappings: - match: test.*.* name: "0foo" labels: {} `, configBad: true, }, // Config with no metric name. { config: `--- mappings: - match: test.*.* labels: this: "$1" `, configBad: true, }, // Config with no mappings. { config: ``, mappings: mappings{}, }, // Config without a trailing newline. { config: `mappings: - match: test.* name: "name" labels: label: "${1}_foo"`, mappings: mappings{ { statsdMetric: "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{ { statsdMetric: "foo.test.a", name: "name", labels: map[string]string{ "label": "a_foo", }, }, }, }, // 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 `, mappings: mappings{ { statsdMetric: "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{ { statsdMetric: "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}, }, }, }, }, // 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 multiple explicit metric types { config: `--- mappings: - match: test.foo.* name: "test_foo_sum" match_metric_type: counter - match: test.foo.* name: "test_foo_current" match_metric_type: gauge `, mappings: mappings{ { statsdMetric: "test.foo.test", name: "test_foo_sum", metricType: MetricTypeCounter, }, { statsdMetric: "test.foo.test", name: "test_foo_current", metricType: MetricTypeGauge, }, }, }, //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{ { statsdMetric: "test.1.2", name: "test_1_2", labels: map[string]string{}, notPresent: true, }, }, }, //Config with no name. { config: `--- mappings: - match: *\.foo match_type: regex labels: bar: "foo" `, 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{ { statsdMetric: "test.dispatcher.FooProcessor.send.success", name: "dispatcher_events_total", labels: map[string]string{ "processor": "FooProcessor", "action": "send", "outcome": "success", "job": "test_dispatcher", }, }, { statsdMetric: "foo_product.signup.facebook.failure", name: "signup_events_total", labels: map[string]string{ "provider": "facebook", "outcome": "failure", "job": "foo_product_server", }, }, { statsdMetric: "test.web-server.foo.bar", name: "test_web_server_foo_bar", labels: map[string]string{}, }, }, }, // Config that drops all. { config: `mappings: - match: . match_type: regex name: "drop" action: drop`, mappings: mappings{ { statsdMetric: "test.a", }, { statsdMetric: "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{ { statsdMetric: "test.a", }, { statsdMetric: "web.localhost", name: "web", labels: map[string]string{ "site": "localhost", }, }, }, }, // Config that has a ttl. { config: `mappings: - match: web.* name: "web" ttl: 10s labels: site: "$1"`, mappings: mappings{ { statsdMetric: "test.a", }, { statsdMetric: "web.localhost", name: "web", labels: map[string]string{ "site": "localhost", }, ttl: time.Second * 10, }, }, }, // Config that has a default ttl. { config: `defaults: ttl: 1m2s mappings: - match: web.* name: "web" labels: site: "$1"`, mappings: mappings{ { statsdMetric: "test.a", }, { statsdMetric: "web.localhost", name: "web", labels: map[string]string{ "site": "localhost", }, ttl: time.Minute + time.Second*2, }, }, }, // Config that override a default ttl. { config: `defaults: ttl: 1m2s mappings: - match: web.* name: "web" ttl: 5s labels: site: "$1"`, mappings: mappings{ { statsdMetric: "test.a", }, { statsdMetric: "web.localhost", name: "web", labels: map[string]string{ "site": "localhost", }, ttl: time.Second * 5, }, }, }, } mapper := MetricMapper{} for i, scenario := range scenarios { err := mapper.InitFromYAMLString(scenario.config, 1000) 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) } for metric, mapping := range scenario.mappings { // exporter will call mapper.GetMapping with valid MetricType // so we also pass a sane MetricType in testing if it's not specified mapType := mapping.metricType if mapType == "" { mapType = MetricTypeCounter } m, labels, present := mapper.GetMapping(mapping.statsdMetric, mapType) 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 { 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)) } for label, value := range labels { if mapping.labels[label] != value { t.Fatalf("%d.%q: Expected labels %v, got %v", i, metric, mapping, labels) } } if mapping.ttl > 0 && mapping.ttl != m.Ttl { t.Fatalf("%d.%q: Expected ttl of %s, got %s", i, metric, mapping.ttl.String(), m.Ttl.String()) } if mapping.metricType != "" && mapType != m.MatchMetricType { t.Fatalf("%d.%q: Expected match metric of %s, got %s", i, metric, mapType, m.MatchMetricType) } 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) } } } } } } func TestAction(t *testing.T) { scenarios := []struct { config string configBad bool expectedAction ActionType }{ { // no action set config: `--- mappings: - match: test.*.* name: "foo" `, configBad: false, expectedAction: ActionTypeMap, }, { // map action set config: `--- mappings: - match: test.*.* name: "foo" action: map `, configBad: false, expectedAction: ActionTypeMap, }, { // drop action set config: `--- mappings: - match: test.*.* name: "foo" action: drop `, configBad: false, expectedAction: ActionTypeDrop, }, { // invalid action set config: `--- mappings: - match: test.*.* name: "foo" action: xyz `, configBad: true, expectedAction: ActionTypeDrop, }, } for i, scenario := range scenarios { mapper := MetricMapper{} err := mapper.InitFromYAMLString(scenario.config, 0) 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) } } } }