[jira] [Created] (MNG-6025) Add a ProjectArtifactsCache similar to PluginArtifactsCache

["Anton Tanasenko (JIRA)" <ji...@apache.org>]

Anton Tanasenko created MNG-6025:
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             Summary: Add a ProjectArtifactsCache similar to PluginArtifactsCache
                 Key: MNG-6025
                 URL: https://issues.apache.org/jira/browse/MNG-6025
             Project: Maven
          Issue Type: Improvement
          Components: core
    Affects Versions: 3.3.9
            Reporter: Anton Tanasenko
            Priority: Minor


Every mojo execution, if it specifies dependency resolution other than 'none', will cause a resolution to be performed.
There is a guard in MojoExecutor's DependencyContext which guards against performing this resolution multiple times by looking at the changes to dependencyArtifacts list.

However, during a build in an incremental/interactive environment, like eclipse m2e or maven console, those mojos might be executed at an arbitrary time and will not benefit from that DependencyContext check.

I propose having a ProjectArtifactsCache (very similar to PluginArtifactsCache) that will cache artifact set as returned by LifecycleDependencyResolver#getDependencies().

While it does not improve cli builds, incremental/interactive builds will receive a huge performance boost between pom changes.
I've been able to get build of a project with a lot of dependencies (jenkins plugin) and a number of (fully incremental) mojo executions from 7 seconds to around 1.5 on a single java file change in eclipse m2e after introducing this cache.

I will provide a patch shortly.



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