Custom processes implemented by software components

mjshen

I compiled the SimpleProcess example from the Programmers Reference using eclipse into a package com.bd.awareim and exported it to a jar file myAwareExtension.jar. This jar file viewed by jar command as follow:

jar -tvf myAwareExtension.jar
25 Thu Oct 07 11:16:08 SGT 2010 META-INF/MANIFEST.MF
2321 Thu Oct 07 11:14:12 SGT 2010 com/bd/awareim/SimpleProcess.class

I put myAwareExtension.jar under /AwareIM/Tomcat/shared/lib and added $AWARE_HOME/myAwareExtension.jar into ClientStarter.sh and setEnv.sh's CLASSPATH, then restarted AwareIM servers.

In the Configuration Tool, I defined a process with specifying Custom Software Component as com.bd.awareim.SimpleProcess. In the operation mode, when starting the process, I got error message:

Process implementation component com.bd.awareim.SimpleProcess is not found or has invalid format

Could someone kindly point how to distinguish and debug it "is not found" or "has invalid format"?

Thanks,
Mojun

aware_support

Are you sure you didn't make a mistake when modifying the setEnv.sh? A single syntactic mistake can cause this problem. Another possibility is incompatibility between jar formats used by different Java versions. Which Java version are you compiling the file with? Has to be 1.4

mjshen

I didn't find syntactic mistake in setEnv.sh. The following is the content of setEnv.sh on the server:

more setEnv.sh
#!/bin/sh
#

Aware IM Script that sets up the appropriate environment and runs the specified class

#

#make sure java is on your path
JDK_HOME=${JDK_HOME:-"../JDK"}

JBOSS_HOME=${JBOSS_HOME:-"../JBoss"}
TOMCAT_HOME=${TOMCAT_HOME:-"../Tomcat"}
AWARE_HOME=${AWARE_HOME:-"../Tomcat/shared/lib"}

CLASSPATH=${CLASSPATH:-"$JDK_HOME/lib/tools.jar:$JBOSS_HOME/server/bas/lib/jboss-j2ee.jar:$JBOSS_HOME/server/bas/lib/mail.jar:$JBOSS_HOME/server/bas/lib/activation.jar:$TOMCAT_HOME/common/lib/servlet-api.jar:$TOMCAT_HOME/common/lib/jsp-api.jar:$JBOSS_HOME/client/jnp-client.jar:$JBOSS_HOME/client/jnet.jar:$JBOSS_HOME/client/jboss-common-client.jar:$JBOSS_HOME/client/jbossmq-client.jar:$JBOSS_HOME/client/concurrent.jar:$AWARE_HOME/openAdaptor.jar:$AWARE_HOME/mysql-connector-java-3.1.12-bin.jar:$AWARE_HOME/xerces.jar:$AWARE_HOME/commons-digester.jar:$AWARE_HOME/commons-collections.jar:$AWARE_HOME/commons-beanutils.jar:$AWARE_HOME/jasperreports-0.5.0.jar:$AWARE_HOME/jgraph.jar:$AWARE_HOME/jacob.jar:$AWARE_HOME/itext-0.96.jar:$AWARE_HOME/log4j-1.2.8.jar:$AWARE_HOME/regexp.jar:$AWARE_HOME/jakarta-poi-1.5.1.jar:$AWARE_HOME/axis.jar:$AWARE_HOME/commons-discovery.jar:$AWARE_HOME/commons-logging.jar:$AWARE_HOME/jaxrpc.jar:$AWARE_HOME/saaj.jar:$AWARE_HOME/wsdl4j.jar:$AWARE_HOME/derby.jar:$AWARE_HOME/jhall.jar:$AWARE_HOME/looks-1.3.1.jar:$AWARE_HOME/jfreechart-1.0.2.jar:$AWARE_HOME/jcommon-1.0.5.jar:$AWARE_HOME/ojdbc14.jar:$AWARE_HOME/ldap.jar:../docs/help.jar:$AWARE_HOME/awareim.jar:$AWARE_HOME/myAwareExtension.jar" }

$JDK_HOME/bin/java -Xmx96m -cp $CLASSPATH $1 $2

I am using jdk1.6.0_11 to compile and make the jar file ( on windows). On the server side ( Suse Enterprise 10.2), the java version is 1.6.0_20, see below:

java -version
java version "1.6.0_20"
Java(TM) SE Runtime Environment (build 1.6.0_20-b02)
Java HotSpot(TM) 64-Bit Server VM (build 16.3-b01, mixed mode)

The possible problem is because java version? or different java version on compiling and running environment? Any suggestions? I am afraid I can not change the java environment on the server.

aware_support

The file seems OK. Another possibility is that you didn't restart Aware IM after the changes. If you did, it must be the Java version. All you need is compile your code with Java 1.4. You don't need to change the server version of Java - you can have two. Or compile it on your local machine...

mjshen

Thanks for quick reply. I did restart AwareIM after the changes ( actually, before I put new jar file, I shutdown AwareIM). The java version "1.6.0_20" is the system default version at /usr/bin, while AwareIM is using java "1.4.2_03" at $AWARE_HOME/JDK/bin. right?

Followed your instruction, I recompiled the SimpleProcess and re-built the jar file with java "1.4.2_03". Unfortunately, I still got the error of

Process implementation component com.bd.awareim.SimpleProcess is not found or has invalid format

The error message in Tomcat server log is:

Got XML request <root><start_process_action process_name="test" force_no_collection="false" param_values="Parent" ><object_reference object_name="Parent" object_id="2916" />
</start_process_action></root>
Calling BAS server
Exception thrown com.bas.connectionserver.server.d Process implementation component com.bd.awareim.SimpleProcess is not found or has invalid format
com.bas.connectionserver.server.d: Process implementation component com.bd.awareim.SimpleProcess is not found or has invalid format
at com.bas.connectionserver.server.ConnectionFactory.sendMessage(Unknown Source)
at com.bas.webapp.common.WebAppUtils.sendMessageToExecutionEngine(Unknown Source)
at com.bas.webapp.thin.misc.f.a(Unknown Source)
at com.bas.webapp.thin.a.d.c.a(Unknown Source)
at com.bas.webapp.thin.a.c.a(Unknown Source)
at com.bas.webapp.thin.a.c.a(Unknown Source)
at com.bas.webapp.thin.servlets.WebInterfaceServlet.doPost(Unknown Source)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188-)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108-)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:874)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528-)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
at java.lang.Thread.run(Unknown Source)

Any Further suggestion?

Thanks,

mjshen

I forgot mentioning that I changed some ports for Tomcat because those ports conflict with other applications on the server. The changes are:

In /AwareIM/Tomcat/conf/server.xml
•Change 8080->8060
•Change 8005->8065
•Change 8009->8069

Does it effect to access custom software components?

Thanks,

aware_support

Ports have nothing to do with it. There can only be these reasons for the problem:

1) The system CANNOT find the jar file on the classpath.
2) The jar file has incompatible format
3) The system can find the jar and it has the correct format but it cannot find the class in the jar

There is nothing else that could be causing it. The plug-in functionality has been tested numerous times and we are confident that there is no bug in the system. Keep checking for the problem in your setup that could be causing it. If you are sure that the jar is recompiled with 1.4 (yes, this is the version that comes with Aware IM), open the jar file with zip viewer and double check that the path you are referring to is indeed in the jar - if you haven't created it properly the path to the component you are using may not be what it is in the jar. And don't forget to restart Aware IM after any change.

mjshen

I checked very seriously based on the list of reasons

the jar file ( myAwareExtension.jar) was put at /AwareIM/Tomcat/shared/lib, see as follow:
bioxm@sgbioxmdev:/AwareIM> cd Tomcat/shared/lib
bioxm@sgbioxmdev:/AwareIM/Tomcat/shared/lib> ls -l myAwareExtension.jar
-rwxr-xr-x 1 bioxm users 1379 2010-10-08 11:13 myAwareExtension.jar
bioxm@sgbioxmdev:/AwareIM/Tomcat/shared/lib>

2. I compiled the jar file with j2sdk1.4.2_03.
I'll send you email to attach a image of my compiling environment in eclipse. Sorry I have no way to attach the image in this forum.

3. I am sure the class is in the jar file, see below: and I specified the software component as "com.bd.awareim.SimpleProcess" in Configuration Tool

bioxm@sgbioxmdev:/AwareIM/Tomcat/shared/lib> jar -tvf myAwareExtension.jar
25 Fri Oct 08 11:13:10 SGT 2010 META-INF/MANIFEST.MF
2321 Fri Oct 08 11:11:44 SGT 2010 com/bd/awareim/SimpleProcess.class
bioxm@sgbioxmdev:/AwareIM/Tomcat/shared/lib>

Have you tested the plug-in functionality on Suse Enterprise 10.2? Any possibility relevant to OS?

aware_support

OS has nothing to do with it - if Aware IM works in your OS, then plug-ins will work as well.

Everything you attached looks fine. Just realized there is another possibility - if you are using the jar utility from Java 1.6 it may be creating an incompatible jar even if the class is compiled with 1.4. Try using jar utility from 1.4 that comes with Aware IM.

mjshen

I re-compiled the class file and made the jar file with 1.4.2_03 on my server side. Unfortunately, I still got the same error.

mjshen

Provide more information:
I added a main function which prints out "Hello World" in SimpleProcess.class. I ran the following command and got result on my server side:

bioxm@sgbioxmdev:~> /software/j2sdk1.4.2_03/bin/java -cp /AwareIM/Tomcat/shared/lib/awareim.jar:/AwareIM/Tomcat/shared/lib/openAdaptor.jar:/AwareIM/Tomcat/shared/lib/myAwareExtension.jar com.bd.awareim.SimpleProcess
Hello World
bioxm@sgbioxmdev:~>

Does it mean that the SimpleProcess.class is right in myAwareExtension.jar?

I still got the error of "Process implementation component com.bd.awareim.SimpleProcess is not found or has invalid format" in operation. Any other way to consider?

Thanks.

aware_support

I am running out of ideas... The only thing I can suggest is send your code to us so that we create a jar file for you

mjshen

Thanks a lot. I'll send you the code.

dwilson837

It appears the setup instructions are incomplete for Linux. I tried it on Windows and it worked perfectly. On Linux, it did not work until I also modified the classpath for the "startAwareIM.sh" script as well as the two mentioned in the manual.

Please verify and correct the docs so future users avoid wasting time.

aware_support

Oh, yes - thanks for this and apologies for the incomplete doco. We'll fix it.