Import https://github.com/snjeza/bazel-ls-demo-project/tree/master/large

[snjeza]

Related issues:

• Synchronization of bazel projects (performance) #9
• Cache project discovery (performance) #13
• Bazel Eclipse doesn't recognize filegroup #15

I have started with https://github.com/eclipseguru/bazel-eclipse/tree/performance, commit 8a6f0db bazel-eclipse, the main branch and tried to import large to Eclipse using Bazel Eclipse Feature (BEF)

There are several issues:

1. The project has been created for Bazel 5, but IntelliJ aspects require Bazel>= 6
   I have updated the project to work with Bazel 6.1.0. so that now IntelliJ aspects run correctly.

2. The project uses java/resources references that aren’t usual for Bazel - Bazel Eclipse doesn't recognize filegroup #15 (comment)
   I have replaced them with resources.

3. I have added the PR Bazel Eclipse doesn't recognize filegroup #15

When I try to import a project, that takes a long time or Eclipse freezes.

4. The main issue is that Bazel Eclipse refreshes projects on

   bazel-eclipse/bundles/com.salesforce.bazel.eclipse.core/src/com/salesforce/bazel/eclipse/core/model/execution/JobsBasedExecutionService.java

   Line 89 in 9f8988a

   refreshResources(resourcesToRefresh, monitor);

   
   that causes it to repeatedly try to configure projects.

I have commented this call. The Sync Bazel Projects View action happens in the workspace job. Eclipse will automatically refresh projects when the job is finished.

@guw Is there any special reason to call refreshLocal within the workspace job?

5. The findProject method is still called multiple times for the same package/target.

6. JvmConfigurator will dispose and recreate VM every time the Sync Bazel Projects View action is called.

This is a patch against the https://github.com/eclipseguru/bazel-eclipse/tree/performance branch
If the patch is included, importing https://github.com/snjeza/bazel-ls-demo-project/tree/master/large will take about 10 minutes

@guw I would suggest you to apply your #13.
After that, I will create a PR for the issues described in this issue.

[guw]

@snjeza Thanks for investing your time into this. I merged #13.