Expected JAR name LoadError

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#16 opened on Apr 24, 2020 0 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 4/5
Estimated time: 3-5 days
Newbie friendliness: 25/100

Issue type: Bug
Clarity: Mostly clear
Activity status: Stale
Tech stack: java, ruby
Domain: backend, build-system

Research direction

Start by reproducing the documented Gradle, gem, vendor, and RSpec commands in the issue, then inspect the gemspec's jar-dependencies output. Compare the installed artifact with Logstash's registry check at logstash-core/lib/logstash/plugins/registry.rb#L155. Done means the plugin installs normally and Logstash accepts the generated JAR without --no-verify.

Written by the indexing model from the issue text.

Description

Hi, I saw other similar issues. Unfortunately, none actually address how to solve the problem and I guess this means that their projects started working magically.

I made this issue here because it seems to be the most active of the example repositories.

I followed the logstash documentation on java output plugins to make the following plugin:
https://github.com/hashgraph/logstash-output-hedera

I did a fresh clone, and ran the following (after bumping the version):

./gradlew clean
./gradlew build
./gradlew gem
bundle install
bundle exec rake vendor
bundle exec rspec
bundle exec rake publish_gem

I installed logstash with homebrew (read: linuxbrew on Ubuntu 18.04) @ version 7.6.1 and ran logstash-plugin install logstash-output-hedera, which reports a successful install of the plugin

The gemspec reports the plugin jar file should be named logstash-output-hedera-0.0.5.jar, which is what I find in the jar-dependencies folder for the installed logstash after the successful install.

That should be what is checked for by logstash: https://github.com/elastic/logstash/blob/master/logstash-core/lib/logstash/plugins/registry.rb#L155 (I think?)

Yet,

[main] Logstash - java.lang.IllegalStateException: Logstash stopped processing because of an error: (LoadError) Java plugin 'logstash-output-hedera' does not contain a single jar file with the plugin's name and version

Works like a charm if I install locally:
logstash-plugin install --no-verify --local logstash-output-hedera-0.0.5.gem

Bruh, help

Dominant language: Java
Stars: 19
Forks: 39
PR merge metrics: No merged PRs in 30d

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