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Rack::ActionLogger is a tool to log user activity
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 Project Readme

Rack::ActionLogger

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Rack::ActionLogger is a tool to collect user action logs via fluentd, Rails.logger or any custome logger.

It is intended to collect user request log, action log and any other custome logs.

Rails 5.1 or above is required to use it. If you want to use it with other than these versions, please use 0.3.0

Sample Logs

Request log

{
  "message": {
    "path": "/",
    "method": "GET",
    "params": {
      "password": "[FILTERED]"
    },
    "request_headers": {
      "HTTP_VERSION": "HTTP/1.1",
      "HTTP_HOST": "localhost:3000",
      "HTTP_CONNECTION": "keep-alive",
      "HTTP_UPGRADE_INSECURE_REQUESTS": "1",
      "HTTP_USER_AGENT": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.98 Safari/537.36",
      "HTTP_ACCEPT": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",
      "HTTP_ACCEPT_ENCODING": "gzip, deflate, sdch, br",
      "HTTP_ACCEPT_LANGUAGE": "ja,en-US;q=0.8,en;q=0.6",
      "HTTP_COOKIE": "xxx"
    },
    "status_code": 200,
    "ip": "127.0.0.1",
    "remote_ip": "127.0.0.1",
    "user_agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.98 Safari/537.36",
    "device": "pc",
    "os": "Mac OSX",
    "browser": "Chrome",
    "browser_version": "54.0.2840.98",
    "request_id": "150a6ac9-0fd9-4a23-a313-d18da1e35911",
    "response_headers": {
      "X-Frame-Options": "SAMEORIGIN",
      "X-XSS-Protection": "1; mode=block",
      "X-Content-Type-Options": "nosniff",
      "Content-Type": "text/html; charset=utf-8"
    },
    "response_json_body": {
    },
    "tag": "action.rack",
    "user_id": 123
  }
}

Append log

{
  "message": {
    "request_id": "150a6ac9-0fd9-4a23-a313-d18da1e35911",
    "value": "with_tag",
    "tag": "action.activities"
  }
}

Under example folder, there are sample Rails applications to see how these sample logs are created.

Model log

{
  "message": {
    "user_id": null,
    "request_id": "5aae4cc6-125b-4049-b555-502d6968e041",
    "_method": "update",
    "_after:updated_at": "2016-11-18 18:40:15 +0900",
    "_before:updated_at": "2016-11-18 18:33:56 +0900",
    "_after:views": 96,
    "_before:views": 95,
    "tag": "action.model_articles"
  },
  "tag": "action.model_articles"
}

Installation

Add this line to your rails application's Gemfile:

gem 'rack-action_logger'
gem 'fluent-logger'

And then execute:

bundle

Then, add Rack::ActionLogger as middleware to config/application.rb.

config.middleware.use Rack::ActionLogger

Setup Initializations

Under config/initializers, add the following files.

fluent_logger.rb

Fluent::Logger::FluentLogger.open

rack-action_logger.rb

Rack::ActionLogger.configure do |config|
  config.emit_adapter = Rack::ActionLogger::EmitAdapter::FluentAdapter
  config.wrap_key = :message
  config.logger = Rails.logger
  config.filters = Rails.application.config.filter_parameters
end

If wrap_key is nil, the out put does not have parent key of wrap_key.

Usage

Enable Request Log

Request log is automatically enabled

Request can be customized by creating new class for rack_metrics configuration.

Add Append Log

Add the following code to any code on any times.

Rack::ActionLogger::Container.add_append_log({ value: 'ok' }, 'activities')

Add Model Logger

Add the folloing line to config/initializers/rack-action_logger.rb at the end of line.

ActiveRecord::Base.send(:include, Rack::ActionLogger::ActiveRecordExtension)

Override log attributes

Overriden attributes are added to both request and append logs.

Rack::ActionLogger::Container.merge_attributes({ user_id: 123 })

The append log is overrided by user_id attribute.

{
  "message": {
    "request_id": "150a6ac9-0fd9-4a23-a313-d18da1e35911",
    "value": "with_tag",
    "uer_id": 123,
    "tag": "action.activities"
  }
}

Logs out of request

If Rails app uses background job system like sidekiq, exported context (e.g. log attributes and request_id) can be passed to the job.

For example, a worker is the following.

class TestWorker < ApplicationController
  include Sidekiq::Worker
  sidekiq_options queue: :test, retry: 5

  def perform(title, context)
    Rack::ActionLogger::Emitter.new.emit(context) do
      Rack::ActionLogger::Container.add_append_log({ title: title }, 'worker')
      p 'work: title=' + title
    end
  end

end

To call the worker task, the app should call like the following.

action_log_context = Rack::ActionLogger::Container.export
TestWorker.perform_async('Worker Job', action_log_context)

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/wapa5pow/rack-action_logger. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

License

The gem is available as open source under the terms of the MIT License.