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HttpService and ServiceTracker [message #1731742]

Mon, 09 May 2016 17:53

Bill Mair

Messages: 72
Registered: July 2009

Member

I don't register the servlet in web.xml as I want the OSGi part to take care of that.

In start(BundleContext) I register a ServiceTracker for HttpService and expect the "addingService" from my ServiceTrackerCustomizer to be called but it isn't happening.

I am using virgo-tomcat-server-3.6.4.RELEASE and things like /admin are working correctly.

Do I have to explicitly start the org.osgi.service.http.HttpService somewhere?

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Re: HttpService and ServiceTracker [message #1731757 is a reply to message #1731742]

Mon, 09 May 2016 23:03

Bill Mair

Messages: 72
Registered: July 2009

Member

I found this 5 year old blog post by Christopher Frost: http://chrisfrost.com/eclipse-rt/extending-virgo-with-a-httpservice/

(Is this still the way to do it?)

In his blog he states:
Quote:

Several people have asked about us providing a packaging of Virgo that includes the OSGi HttpService. We don't have any plans to do so because it's so easy to extend Virgo with extra function yourself.

Surely as an OSGi based server, providing OSGi Services, it would be normal to assume that an enterprise class OSGi server, that already has tomcat or jetty, would automatically provide the OSGi specified "HttpService" too ( to clarify, I'm not asking about the integration in the Virgo kernel, but it the tomcat and jetty variants).

If it is, as Christopher put it "it's so easy to extend Virgo with extra function yourself", then why not have this "easy" part in every Virgo Enterprise Web server?

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Re: HttpService and ServiceTracker [message #1731781 is a reply to message #1731742]

Tue, 10 May 2016 07:18

GianMaria Romanato

Messages: 57
Registered: November 2015

Member

Hi Bill,

I am not really familiar with this, because I normally prefer WAB bundles over the OSGi HTTP Service (in WAB bundles you have the full power of web.xml to declare filters, servlet mappings etc.)

This said I believe you may be able to use the HTTP Service as follows:

get the Equinox bundle for OSGi HTTP Service [1]
copy the bundle into a Virgo repository folder
create a Virgo plan that lists that bundle
copy the new plan into a Virgo repository folder
modify org.eclipse.virgo.kernel.userregion.properties and add the plan id to the initialArtifacts property.

This is how you "extend" Virgo with custom components that get started automatically when Virgo boots, before starting any application plan contained in the pickup folder. For further details please refer to the Virgo documentation about the initialArtifcats property.

[1] http://www.eclipse.org/equinox/server/http_in_equinox.php

GianMaria.

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Re: HttpService and ServiceTracker [message #1732016 is a reply to message #1731781]

Wed, 11 May 2016 19:00

Bill Mair

Messages: 72
Registered: July 2009

Member

Hi GianMaria,

I'm going to have to combine both solutions due to the peculiarities of the implementation.

I checked out the link you provided and it appears that the information there is based on a package that no longer exists and the "jetty" alternative relies on mortbay jetty 5.1.11 (now up to eclipse jetty 9.x).

I shall have to try out a combination of the the latest o.e.equinox.http.* and o.e.jetty bundles to see what I can get working.

This promises to be an interesting challenge, as the final implementation will have both a jetty and tomcat server implementations running.

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