Class: ConeyIsland::Submitter

Inherits:
Object
  • Object
show all
Defined in:
lib/coney_island/submitter.rb

Overview

TODO: Refactor this to instantiate and use instance methods for ease of testing and thread safety.

Class Method Summary collapse

Class Method Details

.amqp_connection ⇒ Object 



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# File 'lib/coney_island/submitter.rb', line 146

def self.amqp_connection
  @connection
end

.amqp_parameters ⇒ Object 



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# File 'lib/coney_island/submitter.rb', line 88

def self.amqp_parameters
  if ConeyIsland.single_amqp_connection?
    ConeyIsland.amqp_parameters
  else
    @amqp_parameters
  end
end

.amqp_parameters=(params) ⇒ Object 



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# File 'lib/coney_island/submitter.rb', line 84

def self.amqp_parameters=(params)
  @amqp_parameters = params
end

.channel ⇒ Object 



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# File 'lib/coney_island/submitter.rb', line 68

def self.channel
  @channel
end

.connected? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/coney_island/submitter.rb', line 96

def self.connected?
  !!connection && connection.connected?
end

.connection ⇒ Object 



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# File 'lib/coney_island/submitter.rb', line 60

def self.connection
  @connection
end

.connection=(conn) ⇒ Object 



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# File 'lib/coney_island/submitter.rb', line 56

def self.connection=(conn)
  @connection = conn
end

.create_channel ⇒ Object 



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# File 'lib/coney_island/submitter.rb', line 72

def self.create_channel
  @channel = self.connection.create_channel
end

.delay_exchange ⇒ Object 



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# File 'lib/coney_island/submitter.rb', line 80

def self.delay_exchange
  @delay_exchange
end

.exchange ⇒ Object 



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# File 'lib/coney_island/submitter.rb', line 76

def self.exchange
  @exchange
end

.handle_connection ⇒ Object 



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# File 'lib/coney_island/submitter.rb', line 100

def self.handle_connection
  Rails.logger.info("ConeyIsland::Submitter.handle_connection connecting...")
  self.connection = Bunny.new(self.amqp_parameters)
  self.start_connection

rescue Bunny::TCPConnectionFailed, Bunny::PossibleAuthenticationFailureError => e
  self.tcp_connection_retries ||= 0
  self.tcp_connection_retries += 1
  if self.tcp_connection_retries >= ConeyIsland.tcp_connection_retry_limit
    message = "Submitter Failed to connect to RabbitMQ #{ConeyIsland.tcp_connection_retry_limit} times, bailing out"
    Rails.logger.error(message)
    ConeyIsland.poke_the_badger(e, {
      code_source: 'ConeyIsland::Submitter.handle_connection',
      reason: message}
    )
    @connection = nil
  else
    message = "Failed to connecto to RabbitMQ Attempt ##{self.tcp_connection_retries} time(s), trying again in #{ConeyIsland.tcp_connection_retry_interval(self.tcp_connection_retries)} seconds..."
    Rails.logger.error(message)
    sleep(ConeyIsland.tcp_connection_retry_interval(self.tcp_connection_retries))
    retry
  end
rescue Bunny::ConnectionLevelException => e
  Rails.logger.error "Submitter Handling a connection-level exception."
  # Rails.logger.error "Bunny class id : #{e.connection_close.class_id}"
  # Rails.logger.error "Bunny method id: #{e.connection_close.method_id}"
  # Rails.logger.error "Status code   : #{e.connection_close.reply_code}"
  # Rails.logger.error "Error message : #{e.connection_close.reply_text}"
rescue Bunny::ChannelLevelException => e
  Rails.logger.error "Submitter Handling a channel-level exception."
  Rails.logger.error "Bunny class id : #{e.channel_close.class_id}"
  Rails.logger.error "Bunny method id: #{e.channel_close.method_id}"
  Rails.logger.error "Status code   : #{e.channel_close.reply_code}"
  Rails.logger.error "Error message : #{e.channel_close.reply_text}"
else
  self.initialize_rabbit
  self.tcp_connection_retries = 0
end

.initialize_rabbit ⇒ Object 



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# File 'lib/coney_island/submitter.rb', line 139

def self.initialize_rabbit
  self.create_channel
  @exchange = self.channel.topic('coney_island')
  @delay_exchange = self.channel.topic('coney_island_delay')
  @delay_queue = {}
end

.jobs_cache ⇒ Object 



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# File 'lib/coney_island/submitter.rb', line 31

def self.jobs_cache
  @jobs_cache ||= JobsCache.new
end

.publish_job(args, job_id = nil) ⇒ Object 



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# File 'lib/coney_island/submitter.rb', line 150

def self.publish_job(args, job_id = nil)
  # Map arguments
  klass, method_name, job_args = *args
  # Job args is optional
  job_args ||= {}

  # Check arguments
  # Break if klass isn't a Class or a Module
  raise ConeyIsland::JobArgumentError.new "Expected #{klass} to be a Class or Module" unless [Class, Module].any? {|k| klass.is_a?(k)}
  # Break if method_name isn't a String or a Symbol
  raise ConeyIsland::JobArgumentError.new "Expected #{method_name} to be a String or a Symbol" unless [String,Symbol].any? {|k| method_name.is_a?(k)}

  # Set defaults
  job_args['klass']       = klass.name
  job_args['method_name'] = method_name
  job_args.stringify_keys!

  # Extract non job args
  delay      = job_args.delete 'delay'
  work_queue = job_args.delete 'work_queue'

  # Set class defaults if they exist
  if klass.included_modules.include?(Performer)
    delay      ||= klass.get_coney_settings[:delay]
    work_queue ||= klass.get_coney_settings[:work_queue]
  end

  # Set our own defaults if we still don't have any
  work_queue ||= ConeyIsland.default_settings[:work_queue]
  delay      ||= ConeyIsland.default_settings[:delay]

  # Make sure we have a connection if we need one
  handle_connection if !running_inline? && !connected?

  if self.running_inline?
    # Just run this inline if we're not threaded
    ConeyIsland::Job.new(nil, job_args).handle_job
  elsif delay && delay.to_i > 0
    # Is this delayed?
    # Publish to the delay exchange
    publish_to_delay_queue(job_id, job_args, work_queue, delay)
  else
    # Publish to the normal exchange
    publish_to_queue(self.exchange, job_id, job_args, work_queue)
  end

  true
end

.run_inline ⇒ Object 



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# File 'lib/coney_island/submitter.rb', line 11

def self.run_inline
  @run_inline = true
end

.running_inline? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/coney_island/submitter.rb', line 19

def self.running_inline?
  !!@run_inline
end

.start_connection ⇒ Object 



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# File 'lib/coney_island/submitter.rb', line 64

def self.start_connection
  @connection.start
end

.stop_running_inline ⇒ Object 



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# File 'lib/coney_island/submitter.rb', line 15

def self.stop_running_inline
  @run_inline = false
end

.submit(*args) ⇒ Object 



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# File 'lib/coney_island/submitter.rb', line 35

def self.submit(*args)
  if caching_jobs?
    cache_job(*args)
  else
    submit!(args)
  end
end

.submit!(args, job_id = nil) ⇒ Object 



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# File 'lib/coney_island/submitter.rb', line 43

def self.submit!(args, job_id = nil)
  Rails.logger.info "Submitting job #{job_id}: #{args}"
  publish_job(args, job_id)
rescue StandardError => e
  Rails.logger.error(e)
  ConeyIsland.poke_the_badger(e,{
    code_source: "ConeyIsland::Submitter.submit!",
    message: "Error submitting job",
    job_args: args
    })
  fail e if running_inline?
end

.tcp_connection_retries ⇒ Object 



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# File 'lib/coney_island/submitter.rb', line 27

def self.tcp_connection_retries
  @tcp_connection_retries
end

.tcp_connection_retries=(number) ⇒ Object 



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# File 'lib/coney_island/submitter.rb', line 23

def self.tcp_connection_retries=(number)
  @tcp_connection_retries = number
end