Class: FluentLoggerRails::TaggedHashFormatter

Inherits:
Logger::Formatter
  • Object
show all
Defined in:
lib/fluent_logger_rails/tagged_hash_formatter.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(merge_message_into_payload = false) ⇒ TaggedHashFormatter

Returns a new instance of TaggedHashFormatter.



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# File 'lib/fluent_logger_rails/tagged_hash_formatter.rb', line 9

def initialize(merge_message_into_payload = false)
  super()
  @merge_message_into_payload = merge_message_into_payload
  # Override the Logger::Formatter default to a format that does not have a trailing space
  @datetime_format = "%Y-%m-%dT%H:%M:%S.%6N"
end

Instance Attribute Details

#parent_key ⇒ Object

Parent key - ensures that if the log is being merged into a higher level payload this key can be set in order to not conflict or be overridden.



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# File 'lib/fluent_logger_rails/tagged_hash_formatter.rb', line 7

def parent_key
  @parent_key
end

Instance Method Details

#add_tags(*tags) ⇒ Object 



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# File 'lib/fluent_logger_rails/tagged_hash_formatter.rb', line 52

def add_tags(*tags)
  tags = tags.first if tags.length == 1

  if tags.is_a? Array
    current_tags[:tags] ||= []
    current_tags[:tags] += tags
  elsif tags.is_a? String
    current_tags[:tags] ||= []
    current_tags[:tags] << tags
  else
    current_tags.merge! tags
  end
end

#call(severity, timestamp, _progname, msg) ⇒ Object 



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# File 'lib/fluent_logger_rails/tagged_hash_formatter.rb', line 16

def call(severity, timestamp, _progname, msg)
  payload = if msg.is_a?(Hash) && @merge_message_into_payload
    msg
  else
    {
      message: msg.is_a?(String) ? msg.strip : msg,
    }
  end

  payload = payload.merge(
    {
      severity: format_severity(severity),
      timestamp: format_datetime(timestamp),
    },
  ).merge(compact_tags.deep_dup)

  @parent_key ? { @parent_key => payload } : payload
end

#clear_tags! ⇒ Object 



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# File 'lib/fluent_logger_rails/tagged_hash_formatter.rb', line 80

def clear_tags!
  current_tags.clear
end

#compact_tags ⇒ Object 



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# File 'lib/fluent_logger_rails/tagged_hash_formatter.rb', line 90

def compact_tags
  current_tags.delete_if { |_k, v| v.blank? }
end

#current_tags ⇒ Object 



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# File 'lib/fluent_logger_rails/tagged_hash_formatter.rb', line 84

def current_tags
  # We use our object ID here to avoid conflicting with other instances
  thread_key = @thread_key ||= "fluent_logger_rails:#{object_id}"
  Thread.current[thread_key] ||= {}
end

#format_severity(severity) ⇒ Object 



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# File 'lib/fluent_logger_rails/tagged_hash_formatter.rb', line 35

def format_severity(severity)
  if severity.blank?
    'ANY'
  elsif severity.is_a? Integer
    ActiveSupport::Logger::SEV_LABEL[severity]
  else
    severity
  end
end

#remove_tags(*tags) ⇒ Object 



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# File 'lib/fluent_logger_rails/tagged_hash_formatter.rb', line 66

def remove_tags(*tags)
  tags = tags.first if tags.length == 1

  if tags.is_a? Array
    current_tags[:tags] ||= []
    tags.each { |tag| current_tags[:tags].delete(tag) }
  elsif tags.is_a? String
    current_tags[:tags] ||= []
    current_tags[:tags].delete(tags)
  else
    tags.each_key { |key| current_tags.delete(key) }
  end
end

#tagged(*tags) ⇒ Object 



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# File 'lib/fluent_logger_rails/tagged_hash_formatter.rb', line 45

def tagged(*tags)
  add_tags(*tags)
  yield self
ensure
  remove_tags(*tags)
end