Add error status handle to tomcat input

plugins/inputs/tomcat/README.md

@@ -1,73 +1,77 @@
 # Tomcat Input Plugin
 
-The Tomcat plugin collects statistics available from the tomcat manager status page from the `http://<host>/manager/status/all?XML=true URL.`
-(`XML=true` will return only xml data). See the [Tomcat documentation](https://tomcat.apache.org/tomcat-9.0-doc/manager-howto.html#Server_Status) for details of these statistics.
+The Tomcat plugin collects statistics available from the tomcat manager status page from the `http://<host>/manager/status/all?XML=true URL.` (`XML=true` will return only xml data).
+
+See the [Tomcat documentation](https://tomcat.apache.org/tomcat-9.0-doc/manager-howto.html#Server_Status) for details of these statistics.
 
 ### Configuration:
 
 ```toml
-# A Telegraf plugin to collect tomcat metrics.
+# Gather metrics from the Tomcat server status page.
 [[inputs.tomcat]]
-  # A Tomcat status URI to gather stats.
-  # Default is "http://127.0.0.1:8080/manager/status/all?XML=true".
-  url = "http://127.0.0.1:8080/manager/status/all?XML=true"
-  # Credentials for status URI.
-  # Default is tomcat/s3cret.
-  username = "tomcat"
-  password = "s3cret"
+  ## URL of the Tomcat server status
+  # url = "http://127.0.0.1:8080/manager/status/all?XML=true"
+
+  ## HTTP Basic Auth Credentials
+  # username = "tomcat"
+  # password = "s3cret"
+
+  ## Request timeout
+  # timeout = "5s"
+
+  ## Optional SSL Config
+  # ssl_ca = "/etc/telegraf/ca.pem"
+  # ssl_cert = "/etc/telegraf/cert.pem"
+  # ssl_key = "/etc/telegraf/key.pem"
+  ## Use SSL but skip chain & host verification
+  # insecure_skip_verify = false
 ```
 
 ### Measurements & Fields:
 
-- tomcat\_jvm\_memory
-    - free
-    - total
-    - max
-- tomcat\_jvm\_memorypool
-  - max\_threads
-  - current\_thread\_count
-  - current\_threads\_busy
-  - max\_time
-  - processing\_time
-  - request\_count
-  - error\_count
-  - bytes\_received
-  - bytes\_sent
-- tomcat\_connector
-  - max\_threads
-  - current\_thread\_count
-  - current\_thread\_busy
-  - max\_time
-  - processing\_time
-  - request\_count
-  - error\_count
-  - bytes\_received
-  - bytes\_sent
+- tomcat_jvm_memory
+  - free
+  - total
+  - max
+- tomcat_jvm_memorypool
+  - max_threads
+  - current_thread_count
+  - current_threads_busy
+  - max_time
+  - processing_time
+  - request_count
+  - error_count
+  - bytes_received
+  - bytes_sent
+- tomcat_connector
+  - max_threads
+  - current_thread_count
+  - current_thread_busy
+  - max_time
+  - processing_time
+  - request_count
+  - error_count
+  - bytes_received
+  - bytes_sent
 
 ### Tags:
 
-- tomcat\_jvm\_memorypool has the following tags:
+- tomcat_jvm_memorypool has the following tags:
   - name
   - type
-- tomcat\_connector
+- tomcat_connector
   - name
 
-### Sample Queries:
-
-TODO
-
 ### Example Output:
 
 ```
-$ ./telegraf -config telegraf.conf -input-filter tomcat -test
-* Plugin: tomcat, Collection 1
-> tomcat_jvm_memory,host=N8-MBP free=20014352i,max=127729664i,total=41459712i 1474663361000000000
-> tomcat_jvm_memorypool,host=N8-MBP,name=Eden\ Space,type=Heap\ memory committed=11534336i,init=2228224i,max=35258368i,used=1941200i 1474663361000000000
-> tomcat_jvm_memorypool,host=N8-MBP,name=Survivor\ Space,type=Heap\ memory committed=1376256i,init=262144i,max=4390912i,used=1376248i 1474663361000000000
-> tomcat_jvm_memorypool,host=N8-MBP,name=Tenured\ Gen,type=Heap\ memory committed=28549120i,init=5636096i,max=88080384i,used=18127912i 1474663361000000000
-> tomcat_jvm_memorypool,host=N8-MBP,name=Code\ Cache,type=Non-heap\ memory committed=6946816i,init=2555904i,max=251658240i,used=6406528i 1474663361000000000
-> tomcat_jvm_memorypool,host=N8-MBP,name=Compressed\ Class\ Space,type=Non-heap\ memory committed=1966080i,init=0i,max=1073741824i,used=1816120i 1474663361000000000
-> tomcat_jvm_memorypool,host=N8-MBP,name=Metaspace,type=Non-heap\ memory committed=18219008i,init=0i,max=-1i,used=17559376i 1474663361000000000
-> tomcat_connector,host=N8-MBP,name=ajp-bio-8009 bytes_received=0i,bytes_sent=0i,current_thread_count=0i,current_threads_busy=0i,error_count=0i,max_threads=200i,max_time=0i,processing_time=0i,request_count=0i 1474663361000000000
-> tomcat_connector,host=N8-MBP,name=http-bio-8080 bytes_received=0i,bytes_sent=86435i,current_thread_count=10i,current_threads_busy=1i,error_count=2i,max_threads=200i,max_time=167i,processing_time=245i,request_count=15i 1474663361000000000
+tomcat_jvm_memory,host=N8-MBP free=20014352i,max=127729664i,total=41459712i 1474663361000000000
+tomcat_jvm_memorypool,host=N8-MBP,name=Eden\ Space,type=Heap\ memory committed=11534336i,init=2228224i,max=35258368i,used=1941200i 1474663361000000000
+tomcat_jvm_memorypool,host=N8-MBP,name=Survivor\ Space,type=Heap\ memory committed=1376256i,init=262144i,max=4390912i,used=1376248i 1474663361000000000
+tomcat_jvm_memorypool,host=N8-MBP,name=Tenured\ Gen,type=Heap\ memory committed=28549120i,init=5636096i,max=88080384i,used=18127912i 1474663361000000000
+tomcat_jvm_memorypool,host=N8-MBP,name=Code\ Cache,type=Non-heap\ memory committed=6946816i,init=2555904i,max=251658240i,used=6406528i 1474663361000000000
+tomcat_jvm_memorypool,host=N8-MBP,name=Compressed\ Class\ Space,type=Non-heap\ memory committed=1966080i,init=0i,max=1073741824i,used=1816120i 1474663361000000000
+tomcat_jvm_memorypool,host=N8-MBP,name=Metaspace,type=Non-heap\ memory committed=18219008i,init=0i,max=-1i,used=17559376i 1474663361000000000
+tomcat_connector,host=N8-MBP,name=ajp-bio-8009 bytes_received=0i,bytes_sent=0i,current_thread_count=0i,current_threads_busy=0i,error_count=0i,max_threads=200i,max_time=0i,processing_time=0i,request_count=0i 1474663361000000000
+tomcat_connector,host=N8-MBP,name=http-bio-8080 bytes_received=0i,bytes_sent=86435i,current_thread_count=10i,current_threads_busy=1i,error_count=2i,max_threads=200i,max_time=167i,processing_time=245i,request_count=15i 1474663361000000000
 ```