Add response_time to monit plugin

plugins/inputs/monit/README.md

@@ -128,6 +128,7 @@ Minimum Version of Monit tested with is 5.16.
     - hostname
     - port_number
     - request
+    - response_time
     - protocol
     - type
 
@@ -232,4 +233,5 @@ monit_file,monitoring_mode=active,monitoring_status=monitored,pending_action=non
 monit_process,monitoring_mode=active,monitoring_status=monitored,pending_action=none,platform_name=Linux,service=rsyslog,source=xyzzy.local,status=running,version=5.20.0 children=0i,cpu_percent=0,cpu_percent_total=0,mem_kb=3148i,mem_kb_total=3148i,mem_percent=0.2,mem_percent_total=0.2,monitoring_mode_code=0i,monitoring_status_code=1i,parent_pid=1i,pending_action_code=0i,pid=318i,status_code=0i,threads=4i 1579735047000000000
 monit_program,monitoring_mode=active,monitoring_status=initializing,pending_action=none,platform_name=Linux,service=echo,source=xyzzy.local,status=running,version=5.20.0 monitoring_mode_code=0i,monitoring_status_code=2i,pending_action_code=0i,program_started=0i,program_status=0i,status_code=0i 1579735047000000000
 monit_system,monitoring_mode=active,monitoring_status=monitored,pending_action=none,platform_name=Linux,service=debian-stretch-monit.virt,source=xyzzy.local,status=running,version=5.20.0 cpu_load_avg_15m=0,cpu_load_avg_1m=0,cpu_load_avg_5m=0,cpu_system=0,cpu_user=0,cpu_wait=0,mem_kb=42852i,mem_percent=2.1,monitoring_mode_code=0i,monitoring_status_code=1i,pending_action_code=0i,status_code=0i,swap_kb=0,swap_percent=0 1579735047000000000
+monit_remote_host,dc=new-12,host=palladium,monitoring_mode=active,monitoring_status=monitored,pending_action=none,platform_name=Linux,rack=rack-0,service=blog.kalvad.com,source=palladium,status=running,version=5.27.0 monitoring_status_code=1i,monitoring_mode_code=0i,response_time=0.664412,type="TCP",pending_action_code=0i,remote_hostname="blog.kalvad.com",port_number=443i,request="/",protocol="HTTP",status_code=0i 1599138990000000000
 ```

plugins/inputs/monit/monit.go

@@ -114,11 +114,12 @@ type Upload struct {
 }
 
 type Port struct {
-	Hostname   string `xml:"hostname"`
-	PortNumber int64  `xml:"portnumber"`
-	Request    string `xml:"request"`
-	Protocol   string `xml:"protocol"`
-	Type       string `xml:"type"`
+	Hostname     string  `xml:"hostname"`
+	PortNumber   int64   `xml:"portnumber"`
+	Request      string  `xml:"request"`
+	ResponseTime float64 `xml:"responsetime"`
+	Protocol     string  `xml:"protocol"`
+	Type         string  `xml:"type"`
 }
 
 type Block struct {
@@ -301,6 +302,7 @@ func (m *Monit) Gather(acc telegraf.Accumulator) error {
 				fields["remote_hostname"] = service.Port.Hostname
 				fields["port_number"] = service.Port.PortNumber
 				fields["request"] = service.Port.Request
+				fields["response_time"] = service.Port.ResponseTime
 				fields["protocol"] = service.Port.Protocol
 				fields["type"] = service.Port.Type
 				acc.AddFields("monit_remote_host", fields, tags)

plugins/inputs/monit/monit_test.go

@@ -179,6 +179,7 @@ func TestServiceType(t *testing.T) {
 						"request":                "",
 						"protocol":               "DEFAULT",
 						"type":                   "TCP",
+						"response_time":          0.000145,
 					},
 					time.Unix(0, 0),
 				),