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Choosing plugins to update with P2 and eclipse 4 programmatically [message #1771067]

Mon, 21 August 2017 15:41

Diego Tavolaro

Messages: 6
Registered: August 2017

Junior Member

I would like to update a P2 repository with Eclipse 4 programmatically and I would like to choose plugins to update. Classic way to retrieve the provisioning job which updates the repository is:

ProvisioningSession session = new ProvisioningSession(agent);
UpdateOperation operation = new UpdateOperation(session);
operation.getProvisioningContext().setArtifactRepositories(new URI[] { uri});
operation.getProvisioningContext().setMetadataRepositories(new URI[] { uri});
IStatus status = operation.resolveModal(sub.newChild(100))
ProvisioningJob provisioningJob = operation.getProvisioningJob(monitor);
IStatus st = provisioningJob.runModal(monitor);

The resolveModal method checks plugins to update. If I print the possible updates I will have only the product and not the plugins to update.

Update[] updates = operation.getPossibleUpdates();

Now, how to choose the plugins I would like to updates? The UpdateOperation object constructor allows me to specify a list of Installable Units, but if I exclude only the plugin I do not want, the system equally updates all the repository (because of product which is included in the list of installable units?).

Thank you.

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Re: Choosing plugins to update with P2 and eclipse 4 programmatically [message #1771270 is a reply to message #1771067]

Wed, 23 August 2017 15:16

Brian de Alwis

Messages: 876
Registered: January 2012

Senior Member

Unless you've specifically crafted your product's requirements (via a p2.inf), your product is bound to exact versions of the specified features/plugins. Updating those referenced features requires updating the product too.

p2 does provide some support for prompting for selection of updates: see the `org.eclipse.equinox.p2.ui.ProvisioningUI#openUpdateWizard()` methods, and the `org.eclipse.equinox.internal.p2.ui.sdk.scheduler.AutomaticUpdater` class serves as a demonstration in action.

`ProvisioningUI` is based on Eclipse 3.x Workbench though. If you're building a pure E4 app, you'll need to roll your own. Or extract the JFace/SWT components from `org.eclipse.equinox.p2.ui`.

Eclipse Platform committer. Ask me about Eclipse support, training, and consulting.

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Re: Choosing plugins to update with P2 and eclipse 4 programmatically [message #1772671 is a reply to message #1771270]

Wed, 13 September 2017 17:29

Diego Tavolaro

Messages: 6
Registered: August 2017

Junior Member

Hi Brian,

no, I do not need UI. It is just the CheckUpdate function I would like to add to my application at startup without UI.
I would like to update some plugins at startup and eventually a last one when the application restarts (yes, updating twice :) ). To do that I would give the list of IUs to UpdateOperation, but it does not work. I cannot find anything on the net.
It is a E4 RCP application.

Thanks.

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Re: Choosing plugins to update with P2 and eclipse 4 programmatically [message #1772974 is a reply to message #1772671]

Tue, 19 September 2017 15:28

Brian de Alwis

Messages: 876
Registered: January 2012

Senior Member

You'll need to use the lower-level APIs, involving IPlanner and IEngine. Here's a nice example of using the APIs:

https://github.com/adreghiciu/p2/blob/master/bundles/org.eclipse.equinox.p2.console/src/org/eclipse/equinox/internal/p2/console/ProvisioningHelper.java#L178

An update operation is an uninstall and install operation: you'll need to query your profile for the current version, find its replacement, and then configure the IProfileChangeRequest to remove the old IU and add the replacement IU.

Eclipse Platform committer. Ask me about Eclipse support, training, and consulting.

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