Class: Boatman

Inherits:
Object
  • Object
show all
Defined in:
lib/boatman.rb,
lib/boatman/copyable.rb,
lib/boatman/monitored_file.rb,
lib/boatman/monitored_directory.rb

Defined Under Namespace

Modules: Copyable Classes: MonitoredDirectory, MonitoredFile

Class Method Summary collapse

Class Method Details

.load(args) ⇒ Object 



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# File 'lib/boatman.rb', line 23

def self.load(args)
  if(args.size < 1 || args.size > 2)
    Boatman.print_usage
    exit(0)
  end

  puts "Logging to boatman.log"
  require 'logger'
  Boatman.logger = Logger.new("boatman.log")
  logger.level = Logger::INFO

  @config_file = args[0]

  @working_directory = args[1] || "."
  Boatman.logger.info "Working directory: #{@working_directory}"

  load_config_file(args[0])
end

.load_config_file(file) ⇒ Object 



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# File 'lib/boatman.rb', line 42

def self.load_config_file(file)
  Boatman.logger.info  "Loading Config File: #{@config_file}"
  config = YAML.load_file(@config_file)

  @task_files = config["tasks"]

  config["directories"].each do |key, value|
    Object.class_eval do
      define_method(key) do
        return value
      end
    end
  end
end

.print_usage ⇒ Object 



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# File 'lib/boatman.rb', line 57

def self.print_usage
  puts "Usage: boatman <config file> [<working directory>]"
end

.run ⇒ Object 



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# File 'lib/boatman.rb', line 61

def self.run
  @task_files.each do |task_file|
    require "#{@working_directory}/#{task_file}"
    puts "Added task #{task_file}"
  end

  interrupted = false
  trap("INT") { interrupted = true }
  
  while true do
    if interrupted
      puts "Exiting from boatman"
      return
    end

    tasks.each do |task|
      if task[:last_run].nil? || Time.now - task[:last_run] > task[:time_interval]
        begin
          # do everything in the context of the working directory
          puts "Going to check #{task[:directory].path} at #{Time.now}" if $DEBUG
          Dir.chdir(@working_directory) do
            task[:directory].instance_eval &task[:block]
          end
          puts "Leaving #{task[:directory].path} at #{Time.now}" if $DEBUG
        rescue Exception => e
          Boatman.logger.error "Task monitoring #{task[:directory].path} had an error: #{e.message}" rescue nil
          Boatman.logger.error "Backtrace: #{e.backtrace.join("\n")}" if $DEBUG

          # clear the FTP connection cache for good luck
          FTPUtils::FTPConnection.clear_connection_cache
        end

        task[:last_run] = Time.now
      end
    end
    
    sleep 1
  end
end