I make a custom mediator class that used spring jdbc to access data from database. I make a jar from that class and deploy it in WSO2_HOME/repository/components/lib. After that I add the following jar to the same folder : spring-jdbc.jar, spring-tx.jar. But when I tried the custom mediator there is an error "ClassNotFoundException org\springframework\transaction\support\TransactionSynchronization". The problem is I'm pretty sure that "TransactionSynchronization" class is available in the spring-tx.jar. Can anyone help me to solve this problem? :)
One reason may be there are two packages in your class path which has the same 'TransactionSynchronization' class. Can you try the below.
What do you have in your WSO2_HOME/repository/components/dropins directory? Delete all jars inside dropins and restart the server and recheck for the issue.
If the error is still there try deleting spring-tx.jar from WSO2_HOME/repository/components/lib & WSO2_HOME/repository/components/dropins. Then restat the server. Then check whether you are getting the same error or different error?
I am experiencing the same behavior. I have a custom spring mediator that calls out to a database for role based authNZ. I am running esb v 4.7.0.
I downloaded spring-tx-3.1.0.RELEASE.jar from the maven repository and copied it to /usr/local/wso2/wso2esb-4.7.0/repository/components/lib in my environment, then restarted the ESB. When I issue requests to my proxy service, the same class not found exception occurs.
I was examining jar contents today and when I checked the spring-tx jar in /usr/local/wso2/wso2esb-4.7.0/repository/components/lib, the class in present:
jar tf spring-tx-3.1.0.RELEASE.jar | grep TransactionSynchronization
org/springframework/transaction/support/TransactionSynchronization.class
When I do the same in /usr/local/wso2/wso2esb-4.7.0/repository/components/dropins after restart of the esb, the class is not present:
jar tf ../dropins/spring_tx_3.1.0.RELEASE_1.0.0.jar
spring-tx-3.1.0.RELEASE.jar
META-INF/
META-INF/p2.inf
META-INF/MANIFEST.MF
Notice that the spring-tx jar is not included in the OSGi bundle after restart of Synapse.
I will investigate further tomorrow, including building an OSGi bundle that contains the Spring dependencies I need via Eclipse
Related
QUESTION
I am not a maven pro and I got stuck trying to package a Kafka Connector. There are two options for packaging it:
Either you produce a folder with a jar that contains the connector + all the dependency jars - all the kafka-specific jars
Or build a fat jar with all of the dependencies (and I also assume without the kafka-specific jars again, but it is not explicit in the docs).
I am following docs on confluent webpage and the connector I am trying to package is this one on github.
What I tried, after cloning the repo with git, is the following mvn clean package. But this seems to create only a single jar of the original project with the dependencies in mvn cache (~/.m2/repository/).
Google also has link on how to create a fat jar, but I would need somehow to specify which jars I want to exclude from the fat jar.
Thanks
UPDATE
Now I am running:
connect-standalone /etc/kafka/connect-standalone.properties /etc/kafka/connect-cdc-mssql-source.properties
Where /etc/kafka/connect-standalone.properties contains the following line:
plugin.path=/shared_win_files
And ls -al /shared_win_files contains the following:
kafka-connect-cdc-mssql-0.0.1-SNAPSHOT.jar
And jar tvf kafka-connect-cdc-mssql-0.0.1-SNAPSHOT.jar contains the following:
6996 Thu Sep 07 14:47:24 BST 2017 com/github/jcustenborder/kafka/connect/cdc/mssql/MsSqlSourceConnector.class
where MsSqlSourceConnector.classis basically this class here which implements the Connector.
But when I try to run the connector with the command above, I get an error
Failed to find any class that implements Connector and which name matches com.github.jcustenborder.kafka.connect.cdc.mssql.MsSqlSourceConnector
It gives a massive list with all available plugins, but mine is not in there.
Currently, an easy way to package your connector with maven is to use maven-assembly-plugin. This basically entails two main steps:
Define one or more assembly descriptors and save them under src/assembly.
Doc: http://maven.apache.org/plugins/maven-assembly-plugin/descriptor-refs.html
Example: https://github.com/confluentinc/kafka-connect-elasticsearch/blob/master/src/assembly/package.xml
In the descriptor, among other things, you may choose the packaging format of your archive, files and directories to include or exclude, as well as specific settings regarding your projects dependencies.
Include the plugin in your project's pom.xml
Example: https://github.com/confluentinc/kafka-connect-elasticsearch/blob/master/pom.xml
This mainly requires you to define the configuration and execution sections of the maven-assembly-plugin section. Additionally you can associate calls to specific assembly plugin descriptors with certain maven profiles that you may define.
Finally, stay tuned because packaging your Kafka Connect plugins (connectors, transforms, converters) might be significantly simplified soon.
Following Konstantine's answer how to package jars.
The remaining problem was that when specifying plugin.path=/abc in KafkaConnect config, you have to be careful.
You can either put a fat jar like this:
/abc/fatjar.jar
Or you have to create another folder in abc and put all the related jars into that folder like this:
/abc/my-connector-a/connector.jar
/abc/my-connector-a/connector-dependency.jar
...
As in my case, it was treating jars as separate plugins.
I'm working on a springboot 1.5.1 application that I'm trying to load a WSDL included in my resources directory in the wsdl directory. Depending on where my application executes I'm getting different results (command line, intellij, cloud foundry) and I can't seem to get all three to work at the same time.
I've tried several ways of locating the resource:
From prior to the migration to springboot we had this (worked in IntelliJ but not java -jar myboot.jar):
this.getClass().getResource("/wsdl/my.wsdl");
I switched it to the typically more correct version and got it to work in IntelliJ and java -jar but not Cloud Foundry:
this.getClass().getClassLoader().getResource("/wsdl/my.wsdl");
I switched it to use the Spring Resource Loader version and it worked in IntelliJ and CloudFoundry but not java -jar:
#Value("classpath:/wsdl/my.wsdl")
private Resource wsdlResource;
wsdlResource.getURL();
On the command line what I've noticed is that it seems to be thinking that BOOT-INF/classes is a JAR file (Note the ! after classes):
Caused by: javax.xml.ws.WebServiceException: Failed to access the WSDL at: jar:file:/C:/dev/redacted/build/libs/redacted.jar!/BOOT-INF/classes!/wsdl/my.wsdl. It failed with:
JAR entry BOOT-INF/classes!/wsdl/my.wsdl not found in C:\dev\redacted\build\libs\redacted.jar.
From looking at IntelliJ's URL, it's referring to the actual source folder which explains why it seems to always work.
What is causing this and how might I universally load these class path resources successfully with springboot?
I have an application which uses Equinox as an osgi framework for a while now. Until now I used the system property osgi.install.area to specify where my bundles are like so
${osgi.install.area}/
plugins/
org.eclipse.osgi_3.7.0.v20110613.jar
... my app bundles
Equinox then automatically uses ${osgi.install.area}/configuration as the configuration area.
Everything works fine.
Now I need to move the configuration area out of ${osgi.install.area} because that may be read-only and I thought it was as simple as setting ${osgi.configuration.area} to a suitable path but when I do this the application no longer starts and I have the following stack trace in the logs:
java.lang.IllegalStateException: Unable to acquire application service. Ensure that the org.eclipse.core.runtime bundle is resolved and started (see config.ini).
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:74)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at org.eclipse.core.runtime.adaptor.EclipseStarter.main(EclipseStarter.java:150)
...
The path is used because at that location the log file is created and a directory "org.eclipse.osgi".
Paths to bundles are referenced in my config.ini like so:
osgi.bundles=de.mycomp.app-0.6.0.20121116-1834.jar#start, ...
The error message does not really give a hint where to look. It must be something rather simple but I am rather clueless at the moment.
Thanks in advance,
Robert
I tested changing the configuration area an existing osgi app and it worked, with the following argument below in the .ini file in the root of the install. Are you sure you are setting the config param correctly like this:
-Dosgi.configuration.area=c:\mytest
After doing that and running the app again, it created the folder and a new configuration.
Here is a copy of my .ini file that works, also it's important that osgi params come after and vm args.
-loglevel=trace
-vmargs
-Dosgi.configuration.area=c:\mytest
-Dorg.osgi.service.http.port=8094
-Declipse.ignoreApp=true
-Dosgi.noShutdown=true
-Dequinox.ds.print=true
Has anyone tried using jsafeJCEFIPS.jar OSGi? The jar is signed, I can't convert it to a bundle. I tried to embedded as jar in bundle, but it is always throws
java.lang.SecurityException: "JsafeJCE provider is disabled, a FIPS 140 required self-integrity check failed" when I try to create a instance of JsafeJCE object.
It looks JsafeJCE can't check itself integrity(signature etc.)successfully.
I print out jsafeJCE.class.getProtectionDomain, it is (inputstream:bundle-name.jar ).
Any idea how to get jsafeJCE works in OSGi, I'm using Apache Felix.
Thanks in advance!
An ugly workaround is to add RSA jars in system class path and expose these packages thru org.osgi.framework.bootdelegation
I am new to Maven and Spring. I'm using Netbeans 7 as my IDE, and setting up a Spring 3 project using Maven.
Everything seemed to set up smoothly, and I began running through the Spring User Guide. However, I'm getting a file not found exception when trying to load my context.xml file.
I have an App class located at com.myproject and the context.xml file is located at com.myproject.conf
I'm using the following line of code in App.java to try and load the context.xml file:
ApplicationContext context = new ClassPathXmlApplicationContext("context.xml");
But when I run the application, it results in:
Exception in thread "main" org.springframework.beans.factory.BeanDefinitionStoreException: IOException parsing XML document from class path resource [context.xml]; nested exception is java.io.FileNotFoundException: class path resource [context.xml] cannot be opened because it does not exist
Looking at the NetBeans output, it also looks like it's not picking up the log4j.properties file which is also located in com.myproject.conf
I looked at the jar that the build process created, and the entire com.myproject.conf package is missing, meaning the .xml and .properties are missing as well. I've tried moving these config files to the com.myproject package as well as just putting them at the root of the project which don't yield any different results.
So I'm making the assumption that my maven project isn't set up entirely correctly, or maybe a setting isn't correct within NetBeans.
It seems like you need to learn about resources in Maven projects (such as XML, bitmaps, etc...). These are stored in separate directories. See here.
Put the package in "Other Sources"
I have the same problem with a .property file to manage the Internationalization.
I create it in com.company.app.view.resources at the Source Packages directory.
When I build the project and then look at my war file (target).. I don't found the .property file in /WEB-INF/classes/com/company/app/view/resources
Then I put the package in "Other Sources" directory and it works for me.