eclipse-theia/theia

Using vscode-maven plugin with Theia make the application looping

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#6,464 opened on Oct 29, 2019

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help wantedjavaplug-in systemvscode

Description

Description

Using a maven project, try to close and re-open the plugin folder make the application running in a loop

Reproduction Steps

Open a maven project In the maven view, close and re-open the plugin folder --> The cpu goes crazy until we stop the application, we see the plugin folder open-close repeatedly without any user intervention. We see the cpu going down when we kill the application Note: If I open the same workspace with VSCode, it works well

OS and Theia version: Theia: master

Configuration: package.json: remove @theia/java
Plugins installed:
    redhat.java-051.0.vsix
    vscjava.vscode-java-debug-0.22.0.vsix
    vscode-java-dependency-0.6.0.vsix
    vscode-java-test-0.20.0.vsix
    vscjava.vscode-maven-0.19.1.vsix

Diagnostics: Video split in 3 pieces: Top: electron application containing the maven project Middle: htop: showing the running cpu Bottom: Console showing the traces JavaMavenLoop

Contributor guide

Tech stack
typescriptjava
Domain
developer experiencetooling
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
familiarity with Theia plugin systembasic understanding of Eclipse extension API
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30
Research direction
Investigate the infinite loop that occurs when collapsing/expanding a plugin folder in the Maven view. The issue likely lies in the tree widget update mechanism. Check the vscode maven plugin's view provider implementation and Theia's TreeWidget update cycle. Look at the console traces in the attached GIF for clues. Reproduce with the specified plugin versions and Theia master. Compare with VS Code behavior to isolate Theia specific changes.