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* Add runtime metrics support * Rename Options to RunMetricOptions * Make runmetrics producer registration easier with Enable/Disable * Rename and cleanup metric names
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| // Copyright 2019, OpenCensus 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 runmetrics contains support for runtime metrics. | ||
| // | ||
| // To enable collecting runtime metrics, just call Enable(): | ||
| // | ||
| // _ := runmetrics.Enable(runmetrics.RunMetricOptions{ | ||
| // EnableCPU: true, | ||
| // EnableMemory: true, | ||
| // }) | ||
| package runmetrics // import "go.opencensus.io/plugin/runmetrics" |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,77 @@ | ||
| package runmetrics_test | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "go.opencensus.io/metric/metricdata" | ||
| "go.opencensus.io/metric/metricexport" | ||
| "go.opencensus.io/plugin/runmetrics" | ||
| "log" | ||
| "sort" | ||
| ) | ||
|
|
||
| type printExporter struct { | ||
| } | ||
|
|
||
| func (l *printExporter) ExportMetrics(ctx context.Context, data []*metricdata.Metric) error { | ||
| mapData := make(map[string]metricdata.Metric, 0) | ||
|
|
||
| for _, v := range data { | ||
| mapData[v.Descriptor.Name] = *v | ||
| } | ||
|
|
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| mapKeys := make([]string, 0, len(mapData)) | ||
| for key := range mapData { | ||
| mapKeys = append(mapKeys, key) | ||
| } | ||
| sort.Strings(mapKeys) | ||
|
|
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| // for the sake of a simple example, we cannot use the real value here | ||
| simpleVal := func(v interface{}) int { return 42 } | ||
|
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| for _, k := range mapKeys { | ||
| v := mapData[k] | ||
| fmt.Printf("%s %d\n", k, simpleVal(v.TimeSeries[0].Points[0].Value)) | ||
| } | ||
|
|
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| return nil | ||
| } | ||
|
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| func ExampleEnable() { | ||
|
|
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| // Enable collection of runtime metrics and supply options | ||
| err := runmetrics.Enable(runmetrics.RunMetricOptions{ | ||
| EnableCPU: true, | ||
| EnableMemory: true, | ||
| Prefix: "mayapp/", | ||
| }) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
|
|
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| // Use your reader/exporter to extract values | ||
| // This part is not specific to runtime metrics and only here to make it a complete example. | ||
| metricexport.NewReader().ReadAndExport(&printExporter{}) | ||
|
|
||
| // output: | ||
| // mayapp/process/cpu_cgo_calls 42 | ||
| // mayapp/process/cpu_goroutines 42 | ||
| // mayapp/process/heap_alloc 42 | ||
| // mayapp/process/heap_idle 42 | ||
| // mayapp/process/heap_inuse 42 | ||
| // mayapp/process/heap_objects 42 | ||
| // mayapp/process/heap_release 42 | ||
| // mayapp/process/memory_alloc 42 | ||
| // mayapp/process/memory_frees 42 | ||
| // mayapp/process/memory_lookups 42 | ||
| // mayapp/process/memory_malloc 42 | ||
| // mayapp/process/stack_inuse 42 | ||
| // mayapp/process/stack_mcache_inuse 42 | ||
| // mayapp/process/stack_mspan_inuse 42 | ||
| // mayapp/process/sys_heap 42 | ||
| // mayapp/process/sys_memory_alloc 42 | ||
| // mayapp/process/sys_stack 42 | ||
| // mayapp/process/sys_stack_mcache 42 | ||
| // mayapp/process/sys_stack_mspan 42 | ||
| // mayapp/process/total_memory_alloc 42 | ||
| } |
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