Sha256: 7984ade83e06946a8a866e941f84c7bb25ac4bd3ade25ac84658cece163c956f

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Size: 1.3 KB

Versions: 18

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Stored size: 1.3 KB

Contents

module Vedeu

  module Logging

    # Ensures we can always write to the log file by creating a
    # lock-less log device.
    #
    class LocklessLogDevice < ::Logger::LogDevice

      # Returns a new instance of Vedeu::Logging::LocklessLogDevice.
      #
      # @param log [void]
      # @return [Vedeu::Logging::LocklessLogDevice]
      def initialize(log = nil)
        @dev      = nil
        @filename = nil

        if log.respond_to?(:write) && log.respond_to?(:close)
          @dev = log

        else
          @dev      = open_logfile(log)
          @dev.sync = true
          @filename = log

        end
      end

      # @param message [String]
      # @return [void]
      def write(message)
        @dev.write(message)

      rescue StandardError => exception
        warn("log writing failed. #{exception}")
      end

      # @return [void]
      def close
        @dev.close
      rescue
        nil
      end

      private

      # @param log [String]
      # @return [void]
      def open_logfile(log)
        if FileTest.exist?(log)
          open(log, (File::WRONLY | File::APPEND))

        else
          logdev = open(log, (File::WRONLY | File::APPEND | File::CREAT))
          logdev.sync = true
          logdev

        end
      end

    end # LocklessLogDevice

  end # Logging

end # Vedeu

Version data entries

18 entries across 18 versions & 1 rubygems

Version Path
vedeu-0.6.25 lib/vedeu/logging/lockless_log_device.rb
vedeu-0.6.24 lib/vedeu/logging/lockless_log_device.rb
vedeu-0.6.23 lib/vedeu/logging/lockless_log_device.rb
vedeu-0.6.22 lib/vedeu/logging/lockless_log_device.rb
vedeu-0.6.21 lib/vedeu/logging/lockless_log_device.rb
vedeu-0.6.20 lib/vedeu/logging/lockless_log_device.rb
vedeu-0.6.19 lib/vedeu/logging/lockless_log_device.rb
vedeu-0.6.18 lib/vedeu/logging/lockless_log_device.rb
vedeu-0.6.17 lib/vedeu/logging/lockless_log_device.rb
vedeu-0.6.16 lib/vedeu/logging/lockless_log_device.rb
vedeu-0.6.15 lib/vedeu/logging/lockless_log_device.rb
vedeu-0.6.14 lib/vedeu/logging/lockless_log_device.rb
vedeu-0.6.13 lib/vedeu/logging/lockless_log_device.rb
vedeu-0.6.12 lib/vedeu/logging/lockless_log_device.rb
vedeu-0.6.11 lib/vedeu/logging/lockless_log_device.rb
vedeu-0.6.10 lib/vedeu/logging/lockless_log_device.rb
vedeu-0.6.9 lib/vedeu/logging/lockless_log_device.rb
vedeu-0.6.8 lib/vedeu/logging/lockless_log_device.rb