petr-ujezdsky/w2w

Wildfly 2 Wildfly EJB calls demonstration

Wildfly to Wildfly EJB calls

This project demonstrates EJB calls between 2 running Wildfly instances.

Prerequisites

• Docker
• Any browser or wget
• Internet connection for docker to download images

Build

To build the project run

$ ./build.sh

Run

To run the project run

$ ./run.sh

It will start the docker-compose and show their console outputs.

EJB call demos

Project contains several endpoints to demonstrate EJB calls.

Perform simple EJB call

Navigate to http://localhost:8080/testSimple

The console output is then following:

client_1   | 11:35:25,025 INFO  [com.foo.servlet.TestSimpleServlet] (default task-1) Processing request - start
client_1   | 11:35:25,137 INFO  [com.foo.interceptor.AroundLoggingClientInterceptor] (default task-1) #2 handleInvocation - before sendRequest
client_1   | 11:35:25,139 INFO  [com.foo.interceptor.MyContextDataInjectingInterceptor] (default task-1) Generated requestId 8b972aa5-9ef3-49b6-9b4c-0fc93e39ed8b
client_1   | 11:35:25,291 INFO  [com.foo.interceptor.AroundLoggingClientInterceptor] (default task-1) #2 handleInvocation - after sendRequest
server_1   | 11:35:26,417 INFO  [com.foo.interceptor.AroundLoggingServerInterceptor] (default task-2) MyServiceABean#processText - start
server_1   | 11:35:26,418 INFO  [com.foo.interceptor.MyContextDataRetrievingServerInterceptor] (default task-2) Obtained requestId 8b972aa5-9ef3-49b6-9b4c-0fc93e39ed8b
server_1   | 11:35:26,420 INFO  [com.foo.MyServiceABean] (default task-2) Doing "hello world".toUpperCase() inside method processText
server_1   | 11:35:26,421 INFO  [com.foo.interceptor.AroundLoggingServerInterceptor] (default task-2) MyServiceABean#processText - end
client_1   | 11:35:26,460 INFO  [com.foo.interceptor.AroundLoggingClientInterceptor] (default task-1) #2 handleInvocationResult - before getResult
client_1   | 11:35:26,609 INFO  [com.foo.interceptor.AroundLoggingClientInterceptor] (default task-1) #2 handleInvocationResult - after getResult
client_1   | 11:35:26,644 INFO  [com.foo.servlet.TestSimpleServlet] (default task-1) Processing request - end

And web page shows

EJB call performed. Result:
HELLO WORLD

Perform EJB call that throws exception

Navigate to http://localhost:8080/testException

The console output is then following:

client_1   | 11:40:20,263 INFO  [com.foo.servlet.TestExceptionServlet] (default task-1) Processing request - start
client_1   | 11:40:20,264 INFO  [com.foo.interceptor.AroundLoggingClientInterceptor] (default task-1) #2 handleInvocation - before sendRequest
client_1   | 11:40:20,264 INFO  [com.foo.interceptor.MyContextDataInjectingInterceptor] (default task-1) Generated requestId 90a2cdf2-ed67-443e-9ea1-9b1c6d0fb20f
client_1   | 11:40:20,265 INFO  [com.foo.interceptor.AroundLoggingClientInterceptor] (default task-1) #2 handleInvocation - after sendRequest
server_1   | 11:40:20,270 INFO  [com.foo.interceptor.AroundLoggingServerInterceptor] (default task-1) MyServiceABean#alwaysFail - start
server_1   | 11:40:20,272 INFO  [com.foo.interceptor.MyContextDataRetrievingServerInterceptor] (default task-1) Obtained requestId 90a2cdf2-ed67-443e-9ea1-9b1c6d0fb20f
server_1   | 11:40:20,273 INFO  [com.foo.MyServiceABean] (default task-1) Throwing exception
server_1   | 11:40:20,274 INFO  [com.foo.interceptor.AroundLoggingServerInterceptor] (default task-1) MyServiceABean#alwaysFail - end (exception - Intended exception for test)
client_1   | 11:40:20,284 INFO  [com.foo.interceptor.AroundLoggingClientInterceptor] (default task-1) #2 handleInvocationResult - before getResult
client_1   | 11:40:20,289 INFO  [com.foo.interceptor.AroundLoggingClientInterceptor] (default task-1) #2 handleInvocationResult - after getResult (exception - Intended exception for test)
client_1   | 11:40:20,290 INFO  [com.foo.servlet.TestExceptionServlet] (default task-1) Ejb call threw exception: java.lang.Exception: Intended exception for test
client_1   |    at com.foo.MyServiceABean.alwaysFail(MyServiceABean.java:37)
client_1   |    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
...
client_1   | 11:40:20,292 INFO  [com.foo.servlet.TestExceptionServlet] (default task-1) Processing request - end

And web page shows

EJB call performed.

Perform EJB call whose implementation calls some remote method

Navigate to http://localhost:8080/testA2ARemoteCall

Note that the server interceptors are not called again for the remote method invocation. The console output is then following:

client_1   | 11:41:47,619 INFO  [com.foo.servlet.TestA2ARemoteCallServlet] (default task-1) Processing request - start
client_1   | 11:41:47,620 INFO  [com.foo.interceptor.AroundLoggingClientInterceptor] (default task-1) #2 handleInvocation - before sendRequest
client_1   | 11:41:47,620 INFO  [com.foo.interceptor.MyContextDataInjectingInterceptor] (default task-1) Generated requestId 27bcccb1-b575-4855-a082-9b4be2117cce
client_1   | 11:41:47,621 INFO  [com.foo.interceptor.AroundLoggingClientInterceptor] (default task-1) #2 handleInvocation - after sendRequest
server_1   | 11:41:47,626 INFO  [com.foo.interceptor.AroundLoggingServerInterceptor] (default task-1) MyServiceABean#callsARemoteProcessText - start
server_1   | 11:41:47,627 INFO  [com.foo.interceptor.MyContextDataRetrievingServerInterceptor] (default task-1) Obtained requestId 27bcccb1-b575-4855-a082-9b4be2117cce
server_1   | 11:41:47,627 INFO  [com.foo.MyServiceABean] (default task-1) Invoking remote MyServiceABean#processText
server_1   | 11:41:47,627 INFO  [com.foo.MyServiceABean] (default task-1) Doing "hello world".toUpperCase() inside method processText
server_1   | 11:41:47,628 INFO  [com.foo.interceptor.AroundLoggingServerInterceptor] (default task-1) MyServiceABean#callsARemoteProcessText - end
client_1   | 11:41:47,631 INFO  [com.foo.interceptor.AroundLoggingClientInterceptor] (default task-1) #2 handleInvocationResult - before getResult
client_1   | 11:41:47,631 INFO  [com.foo.interceptor.AroundLoggingClientInterceptor] (default task-1) #2 handleInvocationResult - after getResult
client_1   | 11:41:47,632 INFO  [com.foo.servlet.TestA2ARemoteCallServlet] (default task-1) Processing request - end

And web page shows

EJB call performed. Result:
HELLO WORLD

Perform EJB call whose implementation calls some local method

Navigate to http://localhost:8080/testA2ALocalCall

Note that the server interceptors are not called again for the local method invocation. The console output is then following:

client_1   | 11:42:29,974 INFO  [com.foo.servlet.TestA2ALocalCallServlet] (default task-1) Processing request - start
client_1   | 11:42:29,974 INFO  [com.foo.interceptor.AroundLoggingClientInterceptor] (default task-1) #2 handleInvocation - before sendRequest
client_1   | 11:42:29,974 INFO  [com.foo.interceptor.MyContextDataInjectingInterceptor] (default task-1) Generated requestId cbd30f21-e1dc-4955-80fe-2a75db39e61f
client_1   | 11:42:29,975 INFO  [com.foo.interceptor.AroundLoggingClientInterceptor] (default task-1) #2 handleInvocation - after sendRequest
server_1   | 11:42:29,980 INFO  [com.foo.interceptor.AroundLoggingServerInterceptor] (default task-1) MyServiceABean#callsALocal - start
server_1   | 11:42:29,981 INFO  [com.foo.interceptor.MyContextDataRetrievingServerInterceptor] (default task-1) Obtained requestId cbd30f21-e1dc-4955-80fe-2a75db39e61f
server_1   | 11:42:29,981 INFO  [com.foo.MyServiceABean] (default task-1) Invoking local MyServiceABean#localMethod
server_1   | 11:42:29,981 INFO  [com.foo.MyServiceABean] (default task-1) Doing "hello world".toUpperCase() inside method localMethod
server_1   | 11:42:29,981 INFO  [com.foo.interceptor.AroundLoggingServerInterceptor] (default task-1) MyServiceABean#callsALocal - end
client_1   | 11:42:29,984 INFO  [com.foo.interceptor.AroundLoggingClientInterceptor] (default task-1) #2 handleInvocationResult - before getResult
client_1   | 11:42:29,984 INFO  [com.foo.interceptor.AroundLoggingClientInterceptor] (default task-1) #2 handleInvocationResult - after getResult
client_1   | 11:42:29,985 INFO  [com.foo.servlet.TestA2ALocalCallServlet] (default task-1) Processing request - end

And web page shows

EJB call performed. Result:
HELLO WORLD

Perform EJB call whose implementation calls method from another EJB service

Navigate to http://localhost:8080/testA2BRemoteCall

Note that the server interceptors are called again for the another EJB service remote method invocation. It uses new InvocationContext. The contextData map is not transferred from the first EJB call (No contextData found). The console output is then following:

client_1   | 12:04:00,623 INFO  [com.foo.servlet.TestA2BRemoteCallServlet] (default task-1) Processing request - start
client_1   | 12:04:00,625 INFO  [com.foo.interceptor.AroundLoggingClientInterceptor] (default task-1) #2 handleInvocation - before sendRequest
client_1   | 12:04:00,625 INFO  [com.foo.interceptor.MyContextDataInjectingInterceptor] (default task-1) Generated requestId 03b35e2c-c020-47a8-81f3-7341c2e6894b
client_1   | 12:04:00,626 INFO  [com.foo.interceptor.AroundLoggingClientInterceptor] (default task-1) #2 handleInvocation - after sendRequest
server_1   | 12:04:00,634 INFO  [com.foo.interceptor.AroundLoggingServerInterceptor] (default task-1) MyServiceABean#callsBRemoteProcessText - start
server_1   | 12:04:00,635 INFO  [com.foo.interceptor.MyContextDataRetrievingServerInterceptor] (default task-1) Obtained requestId 03b35e2c-c020-47a8-81f3-7341c2e6894b
server_1   | 12:04:00,637 INFO  [com.foo.MyServiceABean] (default task-1) Invoking remote MyServiceB$$$view1#processText
server_1   | 12:04:00,639 INFO  [com.foo.interceptor.AroundLoggingServerInterceptor] (default task-1) MyServiceBBean#processText - start
server_1   | 12:04:00,639 INFO  [com.foo.interceptor.MyContextDataRetrievingServerInterceptor] (default task-1) No contextData found
server_1   | 12:04:00,639 INFO  [com.foo.MyServiceBBean] (default task-1) Doing "hello world".toLowerCase() inside method processText
server_1   | 12:04:00,641 INFO  [com.foo.interceptor.AroundLoggingServerInterceptor] (default task-1) MyServiceBBean#processText - end
server_1   | 12:04:00,642 INFO  [com.foo.interceptor.AroundLoggingServerInterceptor] (default task-1) MyServiceABean#callsBRemoteProcessText - end
client_1   | 12:04:00,646 INFO  [com.foo.interceptor.AroundLoggingClientInterceptor] (default task-1) #2 handleInvocationResult - before getResult
client_1   | 12:04:00,646 INFO  [com.foo.interceptor.AroundLoggingClientInterceptor] (default task-1) #2 handleInvocationResult - after getResult
client_1   | 12:04:00,648 INFO  [com.foo.servlet.TestA2BRemoteCallServlet] (default task-1) Processing request - end

And web page shows

EJB call performed. Result:
hello world

Stop running Wildfly instances

To stop running Wildfly instances hit Ctrl + C.