logstash-filter-sentimentalizer

This is a plugin for Logstash.

This plugin enables you to perform effective sentiment analysis on arbitrary event fields with pretty simple configuration. Consider the following:

filter {
  sentimentalizer {
    source => "message"
  }
}

Is enough to perform sentiment analysis on the message field.

Results are stored in the sentiment.probability (a float between 0 and 1, 0 being wholly negative and 1 being maximum positive) and sentiment.polarity (an enum with the members "positive", "negative", and "neutral") fields of the processed event (these names come from the underlying sentiment analysis library).

Here's a short demo of it in action.

It is fully free and fully open source. The license is Apache 2.0, meaning you are pretty much free to use it however you want in whatever way.

Logstash provides infrastructure to automatically generate documentation for this plugin. We use the asciidoc format to write documentation so any comments in the source code will be first converted into asciidoc and then into html. All plugin documentation are placed under one central location.

• For formatting code or config example, you can use the asciidoc [source,ruby] directive
• For more asciidoc formatting tips, see the excellent reference here https://github.com/elasticsearch/docs#asciidoc-guide

Need help? Try #logstash on freenode IRC or the logstash-users@googlegroups.com mailing list.

• To get started, you'll need JRuby with the Bundler gem installed.

• Create a new plugin or clone and existing from the GitHub logstash-plugins organization. We also provide example plugins.

• Install dependencies

bundle install

• Update your dependencies

bundle install

• Run tests

bundle exec rspec

• Edit Logstash Gemfile and add the local plugin path, for example:

gem "logstash-filter-awesome", :path => "/your/local/logstash-filter-awesome"

• Install plugin

bin/plugin install --no-verify

• Run Logstash with your plugin

bin/logstash -e 'filter {awesome {}}'

At this point any modifications to the plugin code will be applied to this local Logstash setup. After modifying the plugin, simply rerun Logstash.

You can use the same 2.1 method to run your plugin in an installed Logstash by editing its Gemfile and pointing the :path to your local plugin development directory or you can build the gem and install it using:

• Build your plugin gem

gem build logstash-filter-awesome.gemspec

• Install the plugin from the Logstash home

bin/plugin install /your/local/plugin/logstash-filter-awesome.gem

• Start Logstash and proceed to test the plugin

All contributions are welcome: ideas, patches, documentation, bug reports, complaints, and even something you drew up on a napkin.

Programming is not a required skill. Whatever you've seen about open source and maintainers or community members saying "send patches or die" - you will not see that here.

It is more important to the community that you are able to contribute.

For more information about contributing, see the CONTRIBUTING file.