code refactor for nfsclient plugin

conf/input.nfsclient/nfsclient.toml

@@ -1,15 +1,8 @@
 # # collect interval
 # interval = 15
 
-
-# # append some labels for series
-# labels = { region="cloud", product="n9e" }
-
-# # interval = global.interval * interval_times
-# interval_times = 1
-
 ## Read more low-level metrics (optional, defaults to false)
- fullstat = false
+fullstat = false
 
 ## List of mounts to explictly include or exclude (optional)
 ## The pattern (Go regexp) is matched against the mount point (not the
@@ -17,8 +10,8 @@
 ## unless present in the list. If a mount is listed in both include_mounts
 ## and exclude_mounts, it is excluded.  Go regexp patterns can be used.
 
-  # include_mounts = []
-  # exclude_mounts = []
+# include_mounts = []
+# exclude_mounts = []
 
 ## List of operations to include or exclude from collecting.  This applies
 ## only when fullstat=true.  Symantics are similar to {include,exclude}_mounts:
@@ -33,5 +26,5 @@
 ## with their own lists.  See "include_mounts" above, and be careful of
 ## duplicate metrics.
 
-#include_operations = ['READ','WRITE','ACCESS','GETATTR','READDIR','LOOKUP']
+# include_operations = ['READ','WRITE','ACCESS','GETATTR','READDIR','LOOKUP']
 # exclude_operations = []

inputs/nfsclient/nfsclient.go

@@ -36,10 +36,6 @@ func init() {
 	})
 }
 
-func (s *NfsClient) Prefix() string {
-	return inputName
-}
-
 func (s *NfsClient) Init() error {
 	var nfs3Fields = []string{
 		"NULL",
@@ -279,7 +275,7 @@ func (s *NfsClient) parseStat(mountpoint string, export string, version string,
 	}
 
 	if len(nline) == 0 {
-		log.Println("W! Parsing Stat line with one field: %s\n", line)
+		log.Println("W! Parsing Stat line with one field:", line)
 		return nil
 	}