Logstash Codec SFlow Plugin

Description

Logstash codec plugin to decode sflow codec.

This codec manage flow sample and counter flow.

For the flow sample it is able to decode Ethernet, 802.1Q VLAN, IPv4, UDP and TCP header

For the counter flow it is able to decode some records of type:

• Generic Interface
• Ethernet Interface
• VLAN
• Processor Information
• HTTP

This is a plugin for Logstash.

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.

Documentation

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/elastic/docs#asciidoc-guide

Need Help?

Need help? Try #logstash on freenode IRC or the https://discuss.elastic.co/c/logstash discussion forum.

Developing

1. Plugin Developement and Testing

Code

• 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.

• Install dependencies

  bundle install
  

Test

bundle exec rspec

The Logstash code required to run the tests/specs is specified in the Gemfile by the line similar to:

gem "logstash", :github => "elasticsearch/logstash", :branch => "1.5"

To test against another version or a local Logstash, edit the Gemfile to specify an alternative location, for example:

gem "logstash", :github => "elasticsearch/logstash", :ref => "master"

gem "logstash", :path => "/your/local/logstash"

Then update your dependencies and run your tests:

bundle install
bundle exec rspec

2. Running your unpublished Plugin in Logstash

2.1 Run in a local Logstash clone

• Edit Logstash tools/Gemfile and add the local plugin path, for example: ruby gem "logstash-codec-sflow", :path => "/your/local/logstash-codec-sflow"
• Update Logstash dependencies sh rake vendor:gems
• Run Logstash with your plugin sh bin/logstash -e 'input { udp { port => 6343 codec => sflow }}' At this point any modifications to the plugin code will be applied to this local Logstash setup. After modifying the plugin, simply rerun Logstash.

2.2 Run in an installed Logstash

• Build your plugin gem sh gem build logstash-codec-sflow.gemspec
• Install the plugin from the Logstash home sh bin/plugin install /your/local/plugin/logstash-codec-sflow.gem
• Start Logstash and proceed to test the plugin

Contributing

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 me that you are able to contribute.

For more information about contributing, see the CONTRIBUTING file.