[APM] Add Java agent tutorial (#20453)

src/core_plugins/kibana/common/tutorials/instruction_variant.js

@@ -30,6 +30,7 @@ export const INSTRUCTION_VARIANT = {
   RACK: 'rack',
   JS: 'js',
   GO: 'go',
+  JAVA: 'java',
 };
 
 const DISPLAY_MAP = {
@@ -45,6 +46,7 @@ const DISPLAY_MAP = {
   [INSTRUCTION_VARIANT.RACK]: 'Rack',
   [INSTRUCTION_VARIANT.JS]: 'JS',
   [INSTRUCTION_VARIANT.GO]: 'Go',
+  [INSTRUCTION_VARIANT.JAVA]: 'Java',
 };
 
 /**

src/core_plugins/kibana/server/tutorials/apm/apm_client_instructions.js

@@ -287,3 +287,28 @@ func main() {curlyOpen}
       '**Warning: The Go agent is currently in Beta and not meant for production use.**',
   },
 ];
+
+export const JAVA_CLIENT_INSTRUCTIONS = [
+  {
+    title: 'Download the APM agent',
+    textPre: 'Download the agent jar from [Maven Central](http://search.maven.org/#search%7Cga%7C1%7Ca%3Aelastic-apm-agent). ' +
+    'Do **not** add the agent as a dependency to your application.'
+  },
+  {
+    title: 'Start your application with the javaagent flag',
+    textPre: 'Add the `-javaagent` flag and configure the agent with system properties.\n' +
+    '\n' +
+    ' * Set required service name (allowed characters: a-z, A-Z, 0-9, -, _, and space)\n' +
+    ' * Set custom APM Server URL (default: http://localhost:8200)\n' +
+    ' * Set the base package of your application',
+    commands: `java -javaagent:/path/to/elastic-apm-agent-<version>.jar \\
+     -Delastic.apm.service_name=my-application \\
+     -Delastic.apm.server_url=http://localhost:8200 \\ 
+     -Delastic.apm.application_packages=org.example \\ 
+     -jar my-application.jar`.split('\n'),
+    textPost:
+    'See the [documentation]' +
+    '({config.docs.base_url}guide/en/apm/agent/java/current/index.html) for configuration options and advanced usage.\n\n' +
+    '**Warning: The Java agent is currently in Beta and not meant for production use.**',
+  },
+];

src/core_plugins/kibana/server/tutorials/apm/elastic_cloud.js

@@ -27,6 +27,7 @@ import {
   RACK_CLIENT_INSTRUCTIONS,
   JS_CLIENT_INSTRUCTIONS,
   GO_CLIENT_INSTRUCTIONS,
+  JAVA_CLIENT_INSTRUCTIONS,
 } from './apm_client_instructions';
 
 const SERVER_URL_INSTRUCTION = {
@@ -69,6 +70,10 @@ export const ELASTIC_CLOUD_INSTRUCTIONS = {
           id: INSTRUCTION_VARIANT.GO,
           instructions: [SERVER_URL_INSTRUCTION, ...GO_CLIENT_INSTRUCTIONS],
         },
+        {
+          id: INSTRUCTION_VARIANT.JAVA,
+          instructions: [SERVER_URL_INSTRUCTION, ...JAVA_CLIENT_INSTRUCTIONS],
+        },
       ],
     },
   ],

src/core_plugins/kibana/server/tutorials/apm/on_prem.js

@@ -35,6 +35,7 @@ import {
   RACK_CLIENT_INSTRUCTIONS,
   JS_CLIENT_INSTRUCTIONS,
   GO_CLIENT_INSTRUCTIONS,
+  JAVA_CLIENT_INSTRUCTIONS,
 } from './apm_client_instructions';
 
 export function onPremInstructions(server) {
@@ -135,6 +136,10 @@ export function onPremInstructions(server) {
             id: INSTRUCTION_VARIANT.GO,
             instructions: GO_CLIENT_INSTRUCTIONS,
           },
+          {
+            id: INSTRUCTION_VARIANT.JAVA,
+            instructions: JAVA_CLIENT_INSTRUCTIONS,
+          },
         ],
         statusCheck: {
           title: 'Agent status',