CODEWITHSUNDEEP
ruby-on-railsrubylogging
user2231831
user2231831

Reputation:

Custom Rails logger creation

I'm using Rails 5 and need to create a custom Rails logger.

For instance in some places of the controllers I want to have this logging calls:

Rails.logger.info('Event happened',
  { event_id: '...', email: '...', ...}
)

And latter on in my log file I want to see something like this:

{
  "level": "info",
  "ts": 1507972311.8043,
  "caller": "controller/api/v2/news.rb:101",
  "msg": "Event happened",
  "app": "My App",
  "env": "production",
  "context": {
    "event_id": "1234567",
    "email": "[email protected]",
    "first_name": "John",
    "last_name": "Doe"
  }
}

Is this possible? How to do this for all log levels (info/debug/error) at the same time?

Upvotes: 0

Views: 2008

Answers (2)

Aleksei Matiushkin
Aleksei Matiushkin

Reputation: 121010

The best solution would be to declare your own Logger#formatter:

Rails.logger.      
      instance_variable_get(:@logger).
      instance_variable_get(:@log).
      formatter = proc do |severity, datetime, progname, msg|
                    DO WHATEVER YOU WANT HERE
                  end

Upvotes: 0

ReggieB
ReggieB

Reputation: 8257

Create you own wrapper:

class LocalLogger

  def self.log(*args)
    new.log(*args)
  end

  def logger
    Rails.logger
  end
  delegate :info, :debug, :warn, :error, to: :logger

  def log(level: :info, payload)
    send(level, payload.inspect)
  end
end

LocalLogger.log level: :warn, {foo: bar}

Modify the log method to behave as you want.

However, avoid the temptation to be too clever with this - the default logger behaviour is pretty good and will behave as most other devs expect it to.

Upvotes: 1

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