[CONF] Apache CXF: Distributed OSGi (page edited)

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Page Edited : CXF : Distributed OSGi Distributed OSGi has been edited by David Bosschaert (Jun 03, 2009). (View changes) Content: Apache CXF provides the Reference Implementation of the Distribution Software (DSW) component of the Distributed OSGi Specification (RFC 119 in http://www.osgi.org/download/osgi-4.2-early-draft3.pdf). It implements RFC 119 using Web Services, leveraging SOAP over HTTP and exposing the Web Service over a WSDL contract. An implementation of the RFC 119 Discovery service is also worked on in this project. Looking for the developer reference? See the Distributed OSGi Reference pages. Presentations and other documents are on the DOSGi Presentations page. Getting Started To get started, get yourself a CXF-DOSGi distribution. The following distributions are available: Multi Bundle Distribution: This distribution is a zip file containing the Distributed OSGi bundles, as well as all their dependencies. Single Bundle Distribution: This is a convenience distribution of a single bundle that embeds all the dependencies. Which distribution to take? That depends on what you are doing. The single-bundle distribution is a really convenient way of getting started as it provides all of Distributed OSGi plus its dependencies in one. The multi-bundle distribution is obviously a little more work to install, but the fine-grained bundles do have an extra benefit: they allow sharing. So if your application depends on one or more of the library bundles, it can use them from the multi-bundle distribution. Similarly, the multi-bundle distribution makes it possible to update the dependency bundles - if compatible - without having to replace the Distributed OSGi bundles. Get a distribution by: Downloading a built distribution. See the DOSGi Releases page. Alternatively, built the distribution yourself. See the DOSGi Build page. Setting up your OSGi container Setting up the single-bundle distribution is really simple. For instructions on setting up the multi-bundle distribution see the Multi Bundle Setup page. Prerequisites for the single-bundle distribution: The single-bundle distribution requires some of the interfaces of the OSGi compendium specification. These are provided with the Equinox and Felix OSGi distributions, but not installed by default. Setting up Felix The compendium interfaces can be downloaded from the following here: http://archive.apache.org/dist/felix/org.osgi.compendium-1.2.0.jar or from a local mirror as per the Felix Download page. To set up Felix you can follow these steps: Verified with: Felix 1.8.0 ../felix-1.8.0> java -jar bin/felix.jar Welcome to Felix. ================= -> start http://archive.apache.org/dist/felix/org.osgi.compendium-1.2.0.jar -> start http://www.apache.org/dist/cxf/dosgi/1.0/cxf-dosgi-ri-singlebundle-distribution-1.0.jar ... some log messages may appear... -> ps START LEVEL 1 ID State Level Name [ 0] [Active ] [ 0] System Bundle (1.8.0) [ 1] [Active ] [ 1] Apache Felix Shell Service (1.2.0) [ 2] [Active ] [ 1] Apache Felix Shell TUI (1.2.0) [ 3] [Active ] [ 1] Apache Felix Bundle Repository (1.4.0) [ 4] [Active ] [ 1] OSGi R4 Compendium Bundle (4.1.0) [ 5] [Active ] [ 1] Distributed OSGi Distribution Software Single-Bundle Distribution (1.0) However, you can also change the conf/config.properties file to automatically load these bundles. This approach is described in the Multi Bundle Setup page. Setting up Equinox The compendium interfaces are part of the Equinox/Eclipse distribution and can be found in a file called plugins/org.eclipse.osgi.services_3.2.0.v20090520-1800.jar (the timestamp could vary). To set up Equinox you can follow these steps: Verified with: Eclipse 3.5 RC 3 .../eclipse> java -jar plugins/org.eclipse.osgi_3.5.0.v20090520.jar -console osgi> install file:plugins/org.eclipse.osgi.services_3.2.0.v20090520-1800.jar Bundle id is 1 osgi> install http://www.apache.org/dist/cxf/dosgi/1.0/cxf-dosgi-ri-singlebundle-distribution-1.0.jar Bundle id is 2 osgi> start 2 ... some log messages may appear... osgi> ss Framework is launched. id State Bundle 0 ACTIVE org.eclipse.osgi_3.5.0.v20090520 1 RESOLVED org.eclipse.osgi.services_3.2.0.v20090520-1800 2 ACTIVE cxf-dosgi-ri-singlebundle-distribution_1.0.0 However, you can also create a config.ini file to automatically load these bundles. This approach is described in the Multi Bundle Setup page. Using Equinox from with the Eclipse IDE This option is really handy for debugging. Verified with: Eclipse 3.5M4 Setting up Eclipse for Running and Debugging Distributed OSGi The Samples The samples directory contains the these sample projects: Sample Description Doc Page greeter a very simple demo of a Greeter OSGi Service exposed remotely and a Consumer invoking on it. Walkthrough of the Greeter Demo spring_dm a demo created using Spring-DM. Rather than invoking on the OSGi API's directly, the Spring-DM demo shows how you can use Spring to configure your beans as OSGi Services and similarly how to use Spring-DM to invoke a (remote) OSGi Service. DOSGi Spring-DM Demo page ds this demo shows how Distributed OSGi can be used with OSGi Declarative Services (DS). DOSGi DS Demo page To get all the source of the samples: simply check out the DOSGi trunk from SVN (http://svn.apache.org/repos/asf/cxf/dosgi/trunk) go into the samples directory and build them using mvn install Reference See Distributed OSGi Reference pages.

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