Fragment Bundles with bndtools

[Kamesh Sampath]

Hi, 

I am trying to create a Extension Fragment bundle tied to a system.bundle, how can i specify those special instructions in bnd.bnd ?

I was able to do it with eclipse PDE manifest editor but dont know how to do it with bndtools. Ideally i need the following two instructions to get in to my MANIFEST.MF,

Fragment-Host: system.bundle

ExtensionBundle-Activator: com.abc.XyzActivator

En route doing it how does my bndtools know which is my "system.bundle" ?

-Kamesh

[Kamesh Sampath]

I had the following instructions to my bnd.bnd

Bundle-Version: 1.0.0.${tstamp}

-buildpath: \

osgi.core;version=6.0,\

osgi.cmpn;version=5.0,\

org.eclipse.osgi;version=3.10

Private-Package: \

org.workspace7.osgi.logger,\

org.workspace7.osgi.logger.internal

Fragment-Host: system.bundle

ExtensionBundle-Activator: org.workspace7.osgi.logger.LoggerActivator

never knew that additional manifest instructions are copied as such on to generated manifest file. 

Please correct me if my understanding is wrong.

-Kamesh

[Neil Bartlett]

Hello Kamesh,

As I think you have already worked out, you can add any headers you like to a bnd file and it will be copied (after possibly processing macros) into the resulting manifest… IF the header name begins with a capital letter. Headers beginning with a lowercase letter or hyphen are used as internal variables or instructions, and are not copied.

You also asked about the name “system.bundle”. This is a special name defined in the OSGi specification as an alias. So Bndtools knows that it is always provided by the framework.

Regards,

Neil

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[Kamesh Sampath]

Thanks for clarifications Neil.

[Kamesh Sampath]

Hello Neil,

I kind of ran in out issues when using bndtools to generate the extension bundle - the reason was that when i leave the bndtools to generate the MANIFEST.MF for my fragment bundle its trying to do the generate  Import-Packages which is illegal when its Extension Bundle. So I have to resort to having a MANIFEST.MF and add the -manifest macro to the bnd.bnd to use my custom MANIFEST.MF.

Is there any plan to add support to "Extension Bundles" in 3.x ? I see we can add something like -ext to the bnd.bnd so that the bndtools generator is aware its a "Extension Bundle" and can skip adding the illegal headers as per spec.

Thoughts?

-Kamesh

On Thursday, March 12, 2015 at 11:27:51 PM UTC+5:30, Neil Bartlett wrote:

[Neil Bartlett]

You can suppress generation of Import-Package by adding this to your bnd:

    Import-Package: !*

Regards

Neil

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Neil Bartlett
Sent from a phone

[Kamesh Sampath]

Thanks Neil, it worked!

-- 

Kamesh Sampath, Sr. Architect

Liferay Global Services, Inc. 

www.liferay.com | Twitter | LinkedIn

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