How to install a non-OSGi maven jar as an OSGi bundle in FUSE?

[oren]

Dear All:

I have encountered a specific problem in FUSE ServiceMix ESB 4.1 that is

seriously hampering my current development. I was wondering if you,

Scott or another expert could kindly help. I looked around in the forums

and the maven bnd plugin documentation, but could not find an answer

anywhere.

I have a non-OSGi legacy maven jar project called core-util, which I

would like to use as a dependency to my FUSE component maven projects.

When I tried

osgi/install -s mvn:edu.utah.further.core/core-util

it installed it, but did not start the bundle, as there is no manifest

in this jar. Consequently, I replaced the core-util pom with the pom

attached to this email, which should now make it an OSGi bundle.

However, now I am getting:

ERROR CommandLineExecutionFailed:

org.apache.geronimo.gshell.command.CommandExce

ption: org.osgi.framework.BundleException: Unresolved constraint in

bundle 160:

package; (package=javanet.staxutils)

If I add javanet.staxutils to the Export-Package header, it works, but

then complains on a different package. After repeating the process for

30 other packages, I was discouraged and tried to use the

Embed-Dependency header. This forced me to add some dependencies seen at

the end of the  block, such as quartz, to be able to see

the package. This is obviously a bad solution and I am not sure how many

more packages would be required for the ESB to recognize core-util

including all of its dependencies, so that it could be started and

recognized by other OSGi bundles. It is also weird that the maven

project can be compiled and run, i.e. the classpath contains all the

required dependencies, albeit ServiceMix does not know how to extract

and use them inside the OSGi environment.

What is the proper procedure to import a non-OSGi maven module in my

local maven repository into ESB, so that it could be used by OSGi bundles?

A side question: when I type "log/d" at the shell, I often get the

entire log file from the beginning of the servicemix installation. Is

there a way to clear the log while ServiceMix is running?wait

Thank you so much in advance,

Oren

-

---

core-util pom.xml -

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[joe.luo]

There are several ways to transform/convert a non-OSGI jar into a OSGI bundle.

1. you could use command line tool "bnd", for more information about creating an OSGI bundle from a plain jar, please have a look at their web site http://www.aqute.biz/Code/Bnd.

2. You could use pax-url-wrap and it is already available from the Fuse ESB 4.1. So basically, you could do something like:

osgi install -s wrap:mvn:com.mycompany/myProject/1.0-SNAPSHOT

Note, you could used *file" instead of mvn so it allows you to install a jar from your local file system. for instance:

osgi install -s wrap:file:///C:/temp/myProject.jar

For more information about pax-url-wrap, please have a look at http://wiki.ops4j.org/display/paxurl/Wrap+Protocol. Basically it uses the "bnd" tool mentioned above.

3. you could use maven-bundle-plugin just as in your project to build an OSGI bundle.

However, the bottom line is that you will have to have all dependent packages available as bundles in the container already if you want to start your bundle. It is different from maven where the maven will pull out all the dependencies for you automatically.

As for the log, you could change the log level using log set to minimize the level of logs that printed out.

Hope it helps,

/Joe

[oren]

Joe, thank you so much, this helped and solved my problem!!

Oren

[oren]

Joe's answer was excellent!