This gem is heavily inspired from lograge, but it's focused on one thing and one thing only. That's making your logs awesome like this:
How it's done ?
By, using these awesome tools:
- Logstash - Store and index your logs
- Kibana - for awesome visualization. This is optional though, and you can use any other visualizer
To know how to setup these tools - visit my blog
This gem purely focuses on how to generate logstash compatible logs i.e. logstash json event format, without any overhead. Infact, logstasher logs to a separate log file named logstash_<environment>.log.
The reason for this separation:
- To have a pure json log file
- Prevent any logger messages(e.g. info) getting into our pure json logs
Before logstasher :
Started GET "/login" for 10.109.10.135 at 2013-04-30 08:59:01 -0400
Processing by SessionsController#new as HTML
Rendered sessions/new.html.haml within layouts/application (4.3ms)
Rendered shared/_javascript.html.haml (0.6ms)
Rendered shared/_flashes.html.haml (0.2ms)
Rendered shared/_header.html.haml (52.9ms)
Rendered shared/_title.html.haml (0.2ms)
Rendered shared/_footer.html.haml (0.2ms)
Completed 200 OK in 532ms (Views: 62.4ms | ActiveRecord: 0.0ms | ND API: 0.0ms)
After logstasher:
{"@source":"unknown","@tags":["request"],"@fields":{"method":"GET","path":"/","format":"html","controller":"file_servers"
,"action":"index","status":200,"duration":28.34,"view":25.96,"db":0.88,"ip":"127.0.0.1","route":"file_servers#index",
"parameters":"","ndapi_time":null,"uuid":"e81ecd178ed3b591099f4d489760dfb6","user":"[email protected]",
"site":"internal"},"@timestamp":"2013-04-30T13:00:46.354500+00:00"}
By default, the older format rails request logs are disabled, though you can enable them.
In your Gemfile:
gem 'logstasher'
# Enable the logstasher logs for the current environment
config.logstasher.enabled = true
# This line is optional if you do not want to suppress app logs in your <environment>.log
config.logstasher.suppress_app_log = false
Since some fields are very specific to your application for e.g. user_name, so it is left upto you, to add them. Here's how to add those fields to the logs:
# Create a file - config/initializers/logstasher.rb
if LogStasher.enabled
LogStasher.add_custom_fields do |fields|
# This block is run in application_controller context,
# so you have access to all controller methods
fields[:user] = current_user && current_user.mail
fields[:site] = request.path =~ /^\/api/ ? 'api' : 'user'
# If you are using custom instrumentation, just add it to logstasher custom fields
LogStasher.custom_fields << :myapi_runtime
end
end
All versions require Rails 3.0.x and higher and Ruby 1.9.2+. Tested on Rails 4 and Ruby 2.0
- Run tests -
rake - Generate test coverage report -
rake coverage. Coverage report path - coverage/index.html
Copyright (c) 2013 Shadab Ahmed, released under the MIT license
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