Change server_ -> jolokia_ in tags and other formatting

plugins/inputs/jolokia/README.md

@@ -3,20 +3,23 @@
 #### Configuration
 
 ```toml
+# Read JMX metrics through Jolokia
 [[inputs.jolokia]]
   ## This is the context root used to compose the jolokia url
   context = "/jolokia"
 
-  # This specifies the mode used
+  ## This specifies the mode used
   # mode = "proxy"
   #
-  # When in proxy mode this section is used to specify further proxy address configurations.
-  # Remember to change servers addresses
+  ## When in proxy mode this section is used to specify further
+  ## proxy address configurations.
+  ## Remember to change host address to fit your environment.
   # [inputs.jolokia.proxy]
-  # host = "127.0.0.1"
-  # port = "8080"
+  #   host = "127.0.0.1"
+  #   port = "8080"
 
-  # List of servers exposing jolokia read service
+
+  ## List of servers exposing jolokia read service
   [[inputs.jolokia.servers]]
     name = "as-server-01"
     host = "127.0.0.1"
@@ -37,21 +40,22 @@
   [[inputs.jolokia.metrics]]
     name = "thread_count"
     mbean  = "java.lang:type=Threading"
-		attribute = "TotalStartedThreadCount,ThreadCount,DaemonThreadCount,PeakThreadCount"
+    attribute = "TotalStartedThreadCount,ThreadCount,DaemonThreadCount,PeakThreadCount"
 
   ## This collect number of class loaded/unloaded counts metrics.
   [[inputs.jolokia.metrics]]
     name = "class_count"
     mbean  = "java.lang:type=ClassLoading"
-		attribute = "LoadedClassCount,UnloadedClassCount,TotalLoadedClassCount"
+    attribute = "LoadedClassCount,UnloadedClassCount,TotalLoadedClassCount"
 ```
 
 #### Description
 
-The Jolokia plugin collects JVM metrics exposed as MBean's attributes through jolokia REST endpoint. All metrics
-are collected for each server configured.
+The Jolokia plugin collects JVM metrics exposed as MBean's attributes through
+jolokia REST endpoint. All metrics are collected for each server configured.
 
 See: https://jolokia.org/
 
 # Measurements:
-Jolokia plugin produces one measure for each metric configured, adding Server's `server_name`, `server_host` and `server_port` as tags.
+Jolokia plugin produces one measure for each metric configured,
+adding Server's `jolokia_name`, `jolokia_host` and `jolokia_port` as tags.

plugins/inputs/jolokia/jolokia.go

@@ -226,9 +226,9 @@ func (j *Jolokia) Gather(acc telegraf.Accumulator) error {
 	tags := make(map[string]string)
 
 	for _, server := range servers {
-		tags["server_name"] = server.Name
-		tags["server_port"] = server.Port
-		tags["server_host"] = server.Host
+		tags["jolokia_name"] = server.Name
+		tags["jolokia_port"] = server.Port
+		tags["jolokia_host"] = server.Host
 		fields := make(map[string]interface{})
 
 		for _, metric := range metrics {

plugins/inputs/jolokia/jolokia_test.go

@@ -96,9 +96,9 @@ func TestHttpJsonMultiValue(t *testing.T) {
 		"heap_memory_usage_used":      203288528.0,
 	}
 	tags := map[string]string{
-		"server_host": "127.0.0.1",
-		"server_port": "8080",
-		"server_name": "as1",
+		"jolokia_host": "127.0.0.1",
+		"jolokia_port": "8080",
+		"jolokia_name": "as1",
 	}
 	acc.AssertContainsTaggedFields(t, "jolokia", fields, tags)
 }