Deprecate the cassandra input plugin (#4050)

plugins/inputs/jolokia2/README.md

@@ -2,7 +2,9 @@
 
 The [Jolokia](http://jolokia.org) _agent_ and _proxy_ input plugins collect JMX metrics from an HTTP endpoint using Jolokia's [JSON-over-HTTP protocol](https://jolokia.org/reference/html/protocol.html).
 
-## Jolokia Agent Configuration
+### Configuration:
+
+#### Jolokia Agent Configuration
 
 The `jolokia2_agent` input plugin reads JMX metrics from one or more [Jolokia agent](https://jolokia.org/agent/jvm.html) REST endpoints.
 
@@ -32,7 +34,7 @@ Optionally, specify SSL options for communicating with agents:
     paths = ["Uptime"]
 ```
 
-## Jolokia Proxy Configuration
+#### Jolokia Proxy Configuration
 
 The `jolokia2_proxy` input plugin reads JMX metrics from one or more _targets_ by interacting with a [Jolokia proxy](https://jolokia.org/features/proxy.html) REST endpoint.
 
@@ -77,7 +79,7 @@ Optionally, specify SSL options for communicating with proxies:
     paths = ["Uptime"]
 ```
 
-## Jolokia Metric Configuration
+#### Jolokia Metric Configuration
 
 Each `metric` declaration generates a Jolokia request to fetch telemetry from a JMX MBean.
 
@@ -167,3 +169,11 @@ Both `jolokia2_agent` and `jolokia2_proxy` plugins support default configuration
 | `default_field_separator` | `.`           | A character to use to join Mbean attributes when creating fields. |
 | `default_field_prefix`    | _None_        | A string to prepend to the field names produced by all `metric` declarations. |
 | `default_tag_prefix`      | _None_        | A string to prepend to the tag names produced by all `metric` declarations. |
+
+### Example Configurations:
+
+- [Java JVM](/influxdata/telegraf/blob/master/plugins/inputs/jolokia2/examples/java.conf)
+- [Kafka](/influxdata/telegraf/blob/master/plugins/inputs/jolokia2/examples/kafka.conf)
+- [Cassandra](/influxdata/telegraf/blob/master/plugins/inputs/jolokia2/examples/cassandra.conf)
+
+Please help improve this list and contribute new configuration files by opening an issue or pull request.

plugins/inputs/jolokia2/examples/cassandra.conf

@@ -0,0 +1,85 @@
+[[inputs.jolokia2_agent]]
+  urls = ["http://localhost:8778/jolokia"]
+  name_prefix = "java_"
+
+  [[inputs.jolokia2_agent.metrics]]
+    name  = "Memory"
+    mbean = "java.lang:type=Memory"
+
+  [[inputs.jolokia2_agent.metric]]
+    name  = "GarbageCollector"
+    mbean = "java.lang:name=*,type=GarbageCollector"
+    tag_keys = ["name"]
+
+[[inputs.jolokia2_agent]]
+  urls = ["http://localhost:8778/jolokia"]
+  name_prefix = "cassandra_"
+
+  [[inputs.jolokia2_agent.metric]]
+    name  = "Cache"
+    mbean = "org.apache.cassandra.metrics:name=*,scope=*,type=Cache"
+    tag_keys = ["name", "scope"]
+
+  [[inputs.jolokia2_agent.metric]]
+    name  = "Client"
+    mbean = "org.apache.cassandra.metrics:name=*,type=Client"
+    tag_keys = ["name"]
+
+  [[inputs.jolokia2_agent.metric]]
+    name  = "ClientRequestMetrics"
+    mbean = "org.apache.cassandra.metrics:name=*,type=ClientRequestMetrics"
+    tag_keys = ["name"]
+
+  [[inputs.jolokia2_agent.metric]]
+    name  = "ClientRequest"
+    mbean = "org.apache.cassandra.metrics:name=*,scope=*,type=ClientRequest"
+    tag_keys = ["name", "scope"]
+
+  [[inputs.jolokia2_agent.metric]]
+    name  = "ColumnFamily"
+    mbean = "org.apache.cassandra.metrics:keyspace=*,name=*,scope=*,type=ColumnFamily"
+    tag_keys = ["keyspace", "name", "scope"]
+
+  [[inputs.jolokia2_agent.metric]]
+    name  = "CommitLog"
+    mbean = "org.apache.cassandra.metrics:name=*,type=CommitLog"
+    tag_keys = ["name"]
+
+  [[inputs.jolokia2_agent.metric]]
+    name  = "Compaction"
+    mbean = "org.apache.cassandra.metrics:name=*,type=Compaction"
+    tag_keys = ["name"]
+
+  [[inputs.jolokia2_agent.metric]]
+    name  = "CQL"
+    mbean = "org.apache.cassandra.metrics:name=*,type=CQL"
+    tag_keys = ["name"]
+
+  [[inputs.jolokia2_agent.metric]]
+    name  = "DroppedMessage"
+    mbean = "org.apache.cassandra.metrics:name=*,scope=*,type=DroppedMessage"
+    tag_keys = ["name", "scope"]
+
+  [[inputs.jolokia2_agent.metric]]
+    name  = "FileCache"
+    mbean = "org.apache.cassandra.metrics:name=*,type=FileCache"
+    tag_keys = ["name"]
+
+  [[inputs.jolokia2_agent.metric]]
+    name  = "ReadRepair"
+    mbean = "org.apache.cassandra.metrics:name=*,type=ReadRepair"
+    tag_keys = ["name"]
+
+  [[inputs.jolokia2_agent.metric]]
+    name  = "HintedHandoffManager"
+    mbean = "org.apache.cassandra.metrics:type=HintedHandoffManager"
+
+  [[inputs.jolokia2_agent.metric]]
+    name  = "Storage"
+    mbean = "org.apache.cassandra.metrics:name=*,type=Storage"
+    tag_keys = ["name"]
+
+  [[inputs.jolokia2_agent.metric]]
+    name  = "ThreadPools"
+    mbean = "org.apache.cassandra.metrics:name=*,path=*,scope=*,type=ThreadPools"
+    tag_keys = ["name", "path", "scope"]

plugins/inputs/jolokia2/jolokia_proxy.go

@@ -56,13 +56,13 @@ func (jp *JolokiaProxy) SampleConfig() string {
   ## Add proxy targets to query
   # default_target_username = ""
   # default_target_password = ""
-  [[inputs.jolokia_proxy.target]]
+  [[inputs.jolokia2_proxy.target]]
     url = "service:jmx:rmi:///jndi/rmi://targethost:9999/jmxrmi"
-	# username = ""
-	# password = ""
+    # username = ""
+    # password = ""
 
   ## Add metrics to read
-  [[inputs.jolokia_proxy.metric]]
+  [[inputs.jolokia2_proxy.metric]]
     name  = "java_runtime"
     mbean = "java.lang:type=Runtime"
     paths = ["Uptime"]