Could not find gem 'logstash-devutils (>= 0) ruby' in any of the gem sources

Question

I\'m just trying to learn to write the example-output-plugin,follow this page:

http://www.elastic.co/guide/en/logstash/current/_how_to_write_a_logstash_output_plugin

Answer 1

I tried installing the gem manually and got a different error:

There was a RuntimeError while loading logstash-devutils.gemspec: Only JRuby is supported from /Users/bnewton/.rvm/gems/ruby-2.2.1/bundler/gems/logstash-devutils-15c59bfaab59/logstash-devutils.gemspec:2:in `'

This leads me to believe the logstash-devutils requires jruby rather than the usual ruby. I use rvm, so it was a matter of installing and using jruby instead of regular ruby. So if you are using rvm, run:

rvm install jruby-1.7.19
rvm use jruby-1.7.19
gem install bundler
bundle install

This fixed it for me, and I was able to run bundle install without error.

Answer 2

I just ran into the same problem. Solved it by just downloading the gem via the download link on its rubygems.org page and installing it with:

sudo gem install logstash-devutils-0.0.13-java.gem

That worked for me.

Update: Well, that will install the gem but it will not solve the real problem. I needed to switch to jruby for the tutorial to work. This can be done via the RVM:

sudo rvm install jruby