Show processed/failed count and error rate in asynqmon stats command

asynq.go

@@ -7,7 +7,6 @@ TODOs:
 - [P0] asynqmon kill <taskID>, asynqmon killall <qname>
 - [P0] Pagination for `asynqmon ls` command
 - [P0] Show elapsed time for InProgress tasks (asynqmon ls inprogress)
-- [P0] Processed, Failed count for today
 - [P0] Go docs + CONTRIBUTION.md + Github issue template + License comment
 - [P0] Redis Sentinel support
 - [P1] Add Support for multiple queues and priority

tools/asynqmon/cmd/stats.go

@@ -58,14 +58,19 @@ func stats(cmd *cobra.Command, args []string) {
 		os.Exit(1)
 	}
 	fmt.Println("QUEUES")
+	printQueues(stats)
+	fmt.Println()
+
+	fmt.Printf("STATS FOR %s UTC\n", stats.Timestamp.UTC().Format("2006-01-02"))
 	printStats(stats)
 	fmt.Println()
+
 	fmt.Println("REDIS INFO")
 	printInfo(info)
 	fmt.Println()
 }
 
-func printStats(s *rdb.Stats) {
+func printQueues(s *rdb.Stats) {
 	format := strings.Repeat("%v\t", 5) + "\n"
 	tw := new(tabwriter.Writer).Init(os.Stdout, 0, 8, 2, ' ', 0)
 	fmt.Fprintf(tw, format, "InProgress", "Enqueued", "Scheduled", "Retry", "Dead")
@@ -74,6 +79,15 @@ func printStats(s *rdb.Stats) {
 	tw.Flush()
 }
 
+func printStats(s *rdb.Stats) {
+	format := strings.Repeat("%v\t", 3) + "\n"
+	tw := new(tabwriter.Writer).Init(os.Stdout, 0, 8, 2, ' ', 0)
+	fmt.Fprintf(tw, format, "Processed", "Failed", "Error Rate")
+	fmt.Fprintf(tw, format, "---------", "------", "----------")
+	fmt.Fprintf(tw, format, s.Processed, s.Failed, fmt.Sprintf("%.2f%%", float64(s.Failed)/float64(s.Processed)*100))
+	tw.Flush()
+}
+
 func printInfo(info map[string]string) {
 	format := strings.Repeat("%v\t", 5) + "\n"
 	tw := new(tabwriter.Writer).Init(os.Stdout, 0, 8, 2, ' ', 0)