Class: InfluxdbLogger::InnerLogger

Inherits:
ActiveSupport::Logger
  • Object
show all
Defined in:
lib/influxdb-logger/logger.rb

Instance Method Summary collapse

Constructor Details

#initialize(options, level, log_tags) ⇒ InnerLogger

Returns a new instance of InnerLogger.



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# File 'lib/influxdb-logger/logger.rb', line 103

def initialize(options, level, log_tags)
  self.level = level
  @messages_type = (options[:messages_type] || :array).to_sym
  @tag = options[:tag]
  @severity_key = (options[:severity_key] || :severity).to_sym
  @batch_size = options[:batch_size]
  @interval = options[:interval]
  @series = options[:series]
  @retention = options[:retention]
  @global_tags = {}
  @last_flush_time = Time.now.to_ms
  @value_filter = options[:value_filter] || {}
  @time_precision = options[:time_precision] || 'ns'

  @influxdb_logger = InfluxDB::Client.new(
    **options.slice(:host, :database, :retry, :username, :password, :async),
    time_precision: @time_precision,
    discard_write_errors: true
  )

  @severity = 0
  @messages = []
  @log_tags = log_tags
  after_initialize if respond_to? :after_initialize
end

Instance Method Details

#[](key) ⇒ Object 



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# File 'lib/influxdb-logger/logger.rb', line 129

def [](key)
  @global_tags[key]
end

#[]=(key, value) ⇒ Object 



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# File 'lib/influxdb-logger/logger.rb', line 133

def []=(key, value)
  @global_tags[key] = value
end

#add(severity, message = nil, progname = nil, &block) ⇒ Object 



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# File 'lib/influxdb-logger/logger.rb', line 137

def add(severity, message = nil, progname = nil, &block)
  return true if severity < level
  message = (block_given? ? block.call : progname) if message.blank?
  return true if message.blank?
  add_message(severity, message)
  true
end

#add_message(severity, message) ⇒ Object 



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# File 'lib/influxdb-logger/logger.rb', line 153

def add_message(severity, message)
  @severity = severity if @severity < severity

  values =
    case message
      when ::String
        {
          message_type: 'String',
          message: utf8_encoded(message)
        }
      when ::Hash
        message.slice!(*@value_filter[:only]) if @value_filter[:only].present?
        message.except!(*@value_filter[:except]) if @value_filter[:except].present?
        message.merge({
          message_type: 'Hash'
        })
      when ::Exception
        {
          message_type: 'Exception',
          message: message.message,
          class: message.class,
          backtrace: message.backtrace
        }
      else
        {
          message_type: 'Others',
          message: message.inspect
        }
    end

  tags = @global_tags.clone

  if @tags
    @log_tags.keys.zip(@tags).each do |k, v|
      tags[k] = v
    end
  end

  message = {
    series: @series,
    timestamp: Time.now.to_precision(@time_precision),
    tags: tags,
    values: values.merge({
      severity: format_severity(@severity)
    }).transform_values {|value|
      case value
        when ::Numeric, ::String
          value
        when ::Hash
          value.to_json
        when ::Symbol
          value.to_s
        else
          value.inspect
      end
    }
  }

  @messages << message
  flush if @messages.size >= @batch_size || (Time.now.to_ms - @last_flush_time) > @interval
end

#close ⇒ Object 



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# File 'lib/influxdb-logger/logger.rb', line 224

def close
end

#flush ⇒ Object 



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# File 'lib/influxdb-logger/logger.rb', line 215

def flush
  return if @messages.empty?
  @influxdb_logger.write_points(@messages, @time_precision, @retention)
  @severity = 0
  @messages.clear
  @last_flush_time = Time.now.to_ms
  @tags = nil
end

#format_severity(severity) ⇒ Object 



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# File 'lib/influxdb-logger/logger.rb', line 235

def format_severity(severity)
  InfluxdbLogger::Logger::SEV_LABEL[severity] || 'ANY'
end

#level ⇒ Object 



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# File 'lib/influxdb-logger/logger.rb', line 227

def level
  @level
end

#level=(l) ⇒ Object 



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# File 'lib/influxdb-logger/logger.rb', line 231

def level=(l)
  @level = l
end

#utf8_encoded(message) ⇒ Object 



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# File 'lib/influxdb-logger/logger.rb', line 145

def utf8_encoded(message)
  if message.encoding == Encoding::UTF_8
    message
  else
    message.dup.force_encoding(Encoding::UTF_8)
  end
end