fix: report metrics to prometheus

docs/CHANGELOG.md

@@ -5,11 +5,6 @@
 **go version**
 
 - feat: support multi-machine collaborative distributed load testing
-
-## v4.1.7 (2022-07-18)
-
-**go version**
-
 - feat: support indicating type and filename when uploading file
 - feat: support to infer MIME type of the file automatically
 - feat: support omitting websocket url if not necessary
@@ -284,8 +279,7 @@
 - feat: implement `transaction` mechanism for load test
 - feat: continue running next step when failure occurs with `--continue-on-failure` flag, default to failfast
 - feat: report GA events with version
-- feat: run load test with the given limit and burst as rate limiter, use `--spawn-count`, `--spawn-rate`
-  and `--request-increase-rate` flag
+- feat: run load test with the given limit and burst as rate limiter, use `--spawn-count`, `--spawn-rate` and `--request-increase-rate` flag
 - feat: report runner state to prometheus
 - refactor: fork [boomer] as submodule initially and made a lot of changes
 - change: update API models
@@ -339,8 +333,7 @@
 
 ## 3.1.8 (2022-03-22)
 
-- feat: add `--profile` flag for har2case to support overwrite headers/cookies with specified yaml/json configuration
-  file
+- feat: add `--profile` flag for har2case to support overwrite headers/cookies with specified yaml/json configuration file
 - feat: support variable and function in response extract expression
 - fix: keep negative index in jmespath unchanged when converting pytest files, e.g. body.users[-1]
 - fix: variable should not start with digit
@@ -658,31 +651,17 @@ reference: [v2-changelog]
 
 
 [hrp]: https://github.com/httprunner/hrp
-
 [hashicorp/go-plugin]: https://github.com/hashicorp/go-plugin
-
 [go plugin]: https://pkg.go.dev/plugin
-
 [docs repo]: https://github.com/httprunner/httprunner.github.io
-
 [zerolog]: https://github.com/rs/zerolog
-
 [jmespath]: https://jmespath.org/
-
 [mkdocs]: https://www.mkdocs.org/
-
 [github-actions]: https://github.com/httprunner/hrp/actions
-
 [boomer]: github.com/myzhan/boomer
-
 [sentry sdk]: https://github.com/getsentry/sentry-go
-
 [pushgateway]: https://github.com/prometheus/pushgateway
-
 [locust]: https://locust.io/
-
 [black]: https://github.com/psf/black
-
 [loguru]: https://github.com/Delgan/loguru
-
-[v2-changelog]: https://github.com/httprunner/httprunner/blob/v2/docs/CHANGELOG.md
+[v2-changelog]: https://github.com/httprunner/httprunner/blob/v2/docs/CHANGELOG.md

hrp/internal/boomer/output.go

@@ -475,7 +475,8 @@ type PrometheusPusherOutput struct {
 
 // OnStart will register all prometheus metric collectors
 func (o *PrometheusPusherOutput) OnStart() {
-	o.reset()
+	// reset all prometheus metrics
+	resetPrometheusMetrics()
 	log.Info().Msg("register prometheus metric collectors")
 	registry := prometheus.NewRegistry()
 	registry.MustRegister(
@@ -608,9 +609,9 @@ func (o *PrometheusPusherOutput) OnEvent(data map[string]interface{}) {
 	}
 }
 
-// reset will reset all metrics
-func (o *PrometheusPusherOutput) reset() {
-	log.Info().Msg("reset metrics")
+// resetPrometheusMetrics will reset all metrics
+func resetPrometheusMetrics() {
+	log.Info().Msg("reset all prometheus metrics")
 	gaugeNumRequests.Reset()
 	gaugeNumFailures.Reset()
 	gaugeMedianResponseTime.Reset()

hrp/internal/boomer/runner.go

@@ -927,14 +927,15 @@ func (r *workerRunner) start() {
 
 		close(r.doneChan)
 
-		// notify master that worker is stopped
-		r.onStopped()
 		// wait until all stats are reported successfully
 		<-r.reportedChan
 		// report test result
 		r.reportTestResult()
 		// output teardown
 		r.outputOnStop()
+
+		// notify master that worker is stopped
+		r.onStopped()
 	}()
 
 	// start stats report

hrp/plugin.go

@@ -8,10 +8,9 @@ import (
 
 	"github.com/httprunner/funplugin"
 	"github.com/httprunner/funplugin/fungo"
-	"github.com/rs/zerolog/log"
-
 	"github.com/httprunner/httprunner/v4/hrp/internal/builtin"
 	"github.com/httprunner/httprunner/v4/hrp/internal/sdk"
+	"github.com/rs/zerolog/log"
 )
 
 const (