WIP configurable metrics

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased](https://git.rustybever.be/vieter-v/vieter/src/branch/dev)
 
+### Added
+
+* Metrics endpoint for Prometheus integration
+
 ## [0.5.0-rc.2](https://git.rustybever.be/vieter-v/vieter/src/tag/0.5.0-rc.2)
 
 ### Added

src/server/cli.v

@@ -15,6 +15,7 @@ pub:
 	base_image           string = 'archlinux:base-devel'
 	max_log_age          int    = -1
 	log_removal_schedule string = '0 0'
+	collect_metrics int = -1
 }
 
 // cmd returns the cli submodule that handles starting the server

src/server/server.v

@@ -101,14 +101,21 @@ pub fn server(conf Config) ! {
 		util.exit_with_message(1, 'Failed to initialize database: $err.msg()')
 	}
 
+	collector := if conf.collect_metrics > 0 {
+			&metrics.MetricsCollector(metrics.new_default_collector())
+			   } else {
+				
+			&metrics.MetricsCollector(metrics.new_null_collector())
+			   }
+
 	mut app := &App{
 		logger: logger
 		api_key: conf.api_key
 		conf: conf
 		repo: repo
 		db: db
+		collector: collector
 		job_queue: build.new_job_queue(global_ce, conf.base_image)
-		collector: metrics.new_default_collector()
 	}
 	app.init_job_queue() or {
 		util.exit_with_message(1, 'Failed to inialize job queue: $err.msg()')

vieter.toml

@@ -13,3 +13,4 @@ api_update_frequency = 2
 image_rebuild_frequency = 1
 max_concurrent_builds = 3
 max_log_age = 64
+collect_metrics = false