Wednesday, February 15, 2017

WSO2 ESB communication with WSO2 ESB Analytics

This blog post is about how & what ports involved when connecting from WSO2 ESB to WSO2 ESB Analytics.

How to configure: This document explains how to configure it
https://docs.wso2.com/display/ESB500/Prerequisites+to+Publish+Statistics

Let's say we have WSO2 ESB  and WSO2 ESB Analytics packs we want to run in same physical machine, then we have to offset one instance. 
But we don't want to do that since WSO2 ESB Analytics by default come with the offset.

So WSO2ESB will run on 9443 port, WSO2 ESB Analytics will run on 9444 port

WSO2 ESB publish data to the WSO2 ESB Analytics via thrift. By default thrift port is 7611 and corresponding ssl thrift port is 7711 (7611+100), check the data-bridge-config.xml file which is in analytics server config directory . 

Since we are shipping analytics products with offset 1 then thrift ports are 7612 and ssl port is 7712.
Here, ssl port (7712) is used for initial authentication purposes of data publisher afterwards it uses the thrift port (7612) for event publishing.. 

Here's a common error people raise when configuring analytics with WSO2 ESB.

[2017-02-14 19:42:56,477] ERROR - DataEndpointConnectionWorker Error while trying to connect to the endpoint. Cannot borrow client for ssl://localhost:7713
org.wso2.carbon.databridge.agent.exception.DataEndpointAuthenticationException: Cannot borrow client for ssl://localhost:7713
        at org.wso2.carbon.databridge.agent.endpoint.DataEndpointConnectionWorker.connect(DataEndpointConnectionWorker.java:99)
        at org.wso2.carbon.databridge.agent.endpoint.DataEndpointConnectionWorker.run(DataEndpointConnectionWorker.java:42)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
Caused by: org.wso2.carbon.databridge.agent.exception.DataEndpointSecurityException: Error while trying to connect to ssl://localhost:7713
        at org.wso2.carbon.databridge.agent.endpoint.thrift.ThriftSecureClientPoolFactory.createClient(ThriftSecureClientPoolFactory.java:61)
        at org.wso2.carbon.databridge.agent.client.AbstractClientPoolFactory.makeObject(AbstractClientPoolFactory.java:39)
        at org.apache.commons.pool.impl.GenericKeyedObjectPool.borrowObject(GenericKeyedObjectPool.java:1212)
        at org.wso2.carbon.databridge.agent.endpoint.DataEndpointConnectionWorker.connect(DataEndpointConnectionWorker.java:91)
        ... 6 more
Caused by: org.apache.thrift.transport.TTransportException: Could not connect to localhost on port 7714
        at org.apache.thrift.transport.TSSLTransportFactory.createClient(TSSLTransportFactory.java:237)
        at org.apache.thrift.transport.TSSLTransportFactory.getClientSocket(TSSLTransportFactory.java:169)
        at org.wso2.carbon.databridge.agent.endpoint.thrift.ThriftSecureClientPoolFactory.createClient(ThriftSecureClientPoolFactory.java:56)
        ... 9 more
Caused by: java.net.ConnectException: Connection refused: connect
        at java.net.DualStackPlainSocketImpl.connect0(Native Method)
        at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79)
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
        at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
        at java.net.Socket.connect(Socket.java:589)
        at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:668)
        at sun.security.ssl.SSLSocketImpl.<init>(SSLSocketImpl.java:427)
        at sun.security.ssl.SSLSocketFactoryImpl.createSocket(SSLSocketFactoryImpl.java:88)
        at org.apache.thrift.transport.TSSLTransportFactory.createClient(TSSLTransportFactory.java:233)
        ... 11 more

This comes because people change the thrift port comes in the following configuration files by adding another 1 (7612+1), thinking of we need to add 1, since we have offset in analytics server as 1.

<ESB_HOME>/repository/deployment/server/eventpublishers/MessageFlowConfigurationPublisher.xml
<ESB_HOME>/repository/deployment/server/eventpublishers/MessageFlowStatisticsPublisher.xml




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