p2 reconciler depends on pretty much all of p2.
Here is a quick explanation of what p2 does without the reconciler
- When the user wants something to install, p2 connects to the URL
provided by the user and downloads two files content.jar and
artifacts.jar. The first one contains the list of all the entities that
are installable and all their dependencies.
- After the user selected an IU to install and proceeds with the
installation, p2 will perform dependency resolution in order to make
sure that the software can actually be installed. (see
org.eclipse.equinox.p2.director bundle)
- If this resolution phase succeeded, then p2 downloads the jars from
the artifact repository and (parts of this are in
org.eclipse.equinox.p2.engine)
- Once the artifacts are all downloaded then the jars are configured
which ends up modifying bundles.info file (the code to write this file
is in org.eclipse.equinox.simpleconfigurator.manipulator, the reader is
in org.eclipse.equinox.simpleconfigurator), also write other eclipse
configuration files like the config.ini and the eclipse.ini.
- The end
Then upon startup osgi loads the config.ini, see that it needs to run
the simpleconfigurator bundle, the bundles.info is read, it installs all
the bundles, ...
Now because of all the things we just described, the work of the
reconciler is not as simple as adding a line in the bundles.info. HEre
are some details
- When the user puts a bundles in the dropins folder, a mechanism finds
that a new file has been added.
- A content.jar & artifacts.jar are created on the fly to represent this
bundle
- The reconciler then takes all the entries from the content.jar and
then at this point we are back to the process previously described. What
I mean is that it is like if the reconciler was the user making a
selection on what to install.
- This means that if a bundle is missing some dependencies (they are not
already installed and are not in the dropins), then the bundle will
never be listed in the bundles.info.
HTH
Pascal
On 15-11-08 08:34 AM, Chiranga Alwis wrote:
Hi,
I have posted a question with regards to developing using Equinox P2
associated with dropins bundle deployment capability.
I have posted this question in stackoverflow forum as well hence I
have provided the link to the question I have asked. Any advice and
help is highly appreciated.
http://stackoverflow.com/questions/33594100/development-of-dropins-bundle-deployment-capability
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