update README.md, go fmt.

wakeful · wakeful · commit afa435b84f3a · 2018-06-17T10:56:01.000+01:00
diff --git a/README.md b/README.md
@@ -18,6 +18,9 @@ Usage of /selenium_grid_exporter:
 ## Metrics
 
 ```
+# HELP selenium_grid_hub_sessions_backlog number of sessions waiting for a slot
+# TYPE selenium_grid_hub_sessions_backlog gauge
+selenium_grid_hub_sessions_backlog 0
 # HELP selenium_grid_hub_slotsFree number of free slots
 # TYPE selenium_grid_hub_slotsFree gauge
 selenium_grid_hub_slotsFree 4
diff --git a/selenium_grid_exporter.go b/selenium_grid_exporter.go
@@ -26,8 +26,8 @@ var (
 )
 
 type Exporter struct {
-	URI                       string
-	mutex                     sync.RWMutex
+	URI                                               string
+	mutex                                             sync.RWMutex
 	up, slotsTotal, slotsFree, newSessionRequestCount prometheus.Gauge
 }
 
@@ -118,7 +118,7 @@ func (e *Exporter) scrape() {
 		log.Errorf("Can't decode Selenium Grid response: %v", err)
 		return
 	}
-	
+
 	e.slotsTotal.Set(hResponse.Slots.Total)
 	e.slotsFree.Set(hResponse.Slots.Free)
 	e.newSessionRequestCount.Set(hResponse.NewSession)

Original file line number	Diff line number	Diff line change
`@@ -26,8 +26,8 @@ var (`
`26`	`26`	`)`
`27`	`27`
`28`	`28`	`type Exporter struct {`
`29`		`- URI string`
`30`		`- mutex sync.RWMutex`
	`29`	`+ URI string`
	`30`	`+ mutex sync.RWMutex`
`31`	`31`	`up, slotsTotal, slotsFree, newSessionRequestCount prometheus.Gauge`
`32`	`32`	`}`
`33`	`33`
`@@ -118,7 +118,7 @@ func (e *Exporter) scrape() {`
`118`	`118`	`log.Errorf("Can't decode Selenium Grid response: %v", err)`
`119`	`119`	`return`
`120`	`120`	`}`
`121`		`-`
	`121`	`+`
`122`	`122`	`e.slotsTotal.Set(hResponse.Slots.Total)`
`123`	`123`	`e.slotsFree.Set(hResponse.Slots.Free)`
`124`	`124`	`e.newSessionRequestCount.Set(hResponse.NewSession)`