class EventLogger

Event logger based on: blog.logentries.com/2015/07/ditch-the-debugger-and-use-log-analysis-instead/

Outputs log entries to an IO stream, one JSON hash per entry.

Adds `generated_at` and `severity` fields to the hash with the current timestamp in milliseconds and the entry severity.

Outputs log entries to a Logger object, one JSON hash per entry.

Can be used with the Ruby Logger or another that responds to per-severity methods.

Attributes

config[R]

mapping[RW]

Public Class Methods

log(*args) click to toggle source

# File lib/event_logger.rb, line 19
def self.log(*args)
  instance.log(*args)
end

new() click to toggle source

# File lib/event_logger.rb, line 14
def initialize
  @config = Config.new
  @mapping = nil
end

Public Instance Methods

create_correlation_id() click to toggle source

# File lib/event_logger.rb, line 37
def create_correlation_id
  SecureRandom.uuid
end

log(type, details = {}) click to toggle source

# File lib/event_logger.rb, line 23
def log(type, details = {})
  severity = if details.key?(:severity)
               details.delete(:severity)
             elsif @mapping && @mapping.key?(details[:name])
               @mapping[details[:name]][:severity]
             else
               :info
             end.to_sym

  config.logger_instance.write severity, details_for(type, details)

  nil
end

Private Instance Methods

details_for(type, details) click to toggle source

# File lib/event_logger.rb, line 43
def details_for(type, details)
  { type: type }.merge(details)
end