Module: Roundhouse

Defined in:
lib/roundhouse.rb,
lib/roundhouse/api.rb,
lib/roundhouse/cli.rb,
lib/roundhouse/web.rb,
lib/roundhouse/util.rb,
lib/roundhouse/actor.rb,
lib/roundhouse/fetch.rb,
lib/roundhouse/rails.rb,
lib/roundhouse/client.rb,
lib/roundhouse/script.rb,
lib/roundhouse/worker.rb,
lib/roundhouse/logging.rb,
lib/roundhouse/manager.rb,
lib/roundhouse/monitor.rb,
lib/roundhouse/testing.rb,
lib/roundhouse/version.rb,
lib/roundhouse/launcher.rb,
lib/roundhouse/paginator.rb,
lib/roundhouse/processor.rb,
lib/roundhouse/scheduled.rb,
lib/roundhouse/web_helpers.rb,
lib/roundhouse/middleware/chain.rb,
lib/roundhouse/redis_connection.rb,
lib/roundhouse/exception_handler.rb,
lib/roundhouse/middleware/server/logging.rb,
lib/generators/roundhouse/worker_generator.rb,
lib/roundhouse/middleware/server/retry_jobs.rb,
lib/roundhouse/middleware/server/active_record.rb

Defined Under Namespace

Modules: Actor, ExceptionHandler, Generators, Logging, Middleware, Paginator, Scheduled, Util, WebHelpers, Worker Classes: CLI, Client, DeadSet, EmptyQueueError, Fetcher, Job, JobSet, Launcher, Manager, Monitor, Process, ProcessSet, Processor, Queue, RedisConnection, RetrySet, RoundRobinFetch, ScheduledSet, Script, Shutdown, SortedEntry, SortedSet, Stats, Testing, Web, Workers

Constant Summary collapse

NAME = 
'Roundhouse'
LICENSE = 
'See LICENSE and the LGPL-3.0 for licensing details.'
DEFAULTS = 
{
  labels: [],
  concurrency: 25,
  require: '.',
  environment: nil,
  timeout: 8,
  poll_interval_average: nil,
  average_scheduled_poll_interval: 15,
  error_handlers: [],
  lifecycle_events: {
    startup: [],
    quiet: [],
    shutdown: [],
  },
  dead_max_jobs: 10_000,
  dead_timeout_in_seconds: 180 * 24 * 60 * 60 # 6 months
}
DEFAULT_WORKER_OPTIONS = 
{
  'retry' => true
}
VERSION = 
"0.3.1"

Class Method Summary collapse

Class Method Details

.average_scheduled_poll_interval=(interval) ⇒ Object

How frequently Redis should be checked by a random Roundhouse process for scheduled and retriable jobs. Each individual process will take turns by waiting some multiple of this value.

See roundhouse/scheduled.rb for an in-depth explanation of this value



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# File 'lib/roundhouse.rb', line 165

def self.average_scheduled_poll_interval=(interval)
  self.options[:average_scheduled_poll_interval] = interval
end

.client_middleware {|@client_chain| ... } ⇒ Object

Yields:

  • (@client_chain) 


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# File 'lib/roundhouse.rb', line 114

def self.client_middleware
  @client_chain ||= Middleware::Chain.new
  yield @client_chain if block_given?
  @client_chain
end

.configure_client {|_self| ... } ⇒ Object

Configuration for Roundhouse client, use like:

Roundhouse.configure_client do |config|
  config.redis = { :namespace => 'myapp', :size => 1, :url => 'redis://myhost:8877/0' }
end

Yields:

  • (_self)

Yield Parameters:

  • _self (Roundhouse) —

    the object that the method was called on



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# File 'lib/roundhouse.rb', line 69

def self.configure_client
  yield self unless server?
end

.configure_server {|_self| ... } ⇒ Object

Configuration for Roundhouse server, use like:

Roundhouse.configure_server do |config|
  config.redis = { :namespace => 'myapp', :size => 25, :url => 'redis://myhost:8877/0' }
  config.server_middleware do |chain|
    chain.add MyServerHook
  end
end

Yields:

  • (_self)

Yield Parameters:

  • _self (Roundhouse) —

    the object that the method was called on



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# File 'lib/roundhouse.rb', line 59

def self.configure_server
  yield self if server?
end

.default_worker_options ⇒ Object 



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# File 'lib/roundhouse.rb', line 130

def self.default_worker_options
  defined?(@default_worker_options) ? @default_worker_options : DEFAULT_WORKER_OPTIONS
end

.default_worker_options=(hash) ⇒ Object 



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# File 'lib/roundhouse.rb', line 126

def self.default_worker_options=(hash)
  @default_worker_options = default_worker_options.merge(hash.stringify_keys)
end

.dump_json(object) ⇒ Object 



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# File 'lib/roundhouse.rb', line 138

def self.dump_json(object)
  JSON.generate(object)
end

.error_handlers ⇒ Object

Register a proc to handle any error which occurs within the Roundhouse process.

Roundhouse.configure_server do |config|
  config.error_handlers << proc {|ex,ctx_hash| MyErrorService.notify(ex, ctx_hash) }
end

The default error handler logs errors to Roundhouse.logger.



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# File 'lib/roundhouse.rb', line 176

def self.error_handlers
  self.options[:error_handlers]
end

.hook_rails! ⇒ Object 



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# File 'lib/roundhouse/rails.rb', line 2

def self.hook_rails!
  # no op
  # This may be completely removed in the future
  # Those extensions make sense for Sidekiq, but do
  # not make sense for Roundhouse
end

.load_json(string) ⇒ Object 



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# File 'lib/roundhouse.rb', line 134

def self.load_json(string)
  JSON.parse(string)
end

.logger ⇒ Object 



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# File 'lib/roundhouse.rb', line 142

def self.logger
  Roundhouse::Logging.logger
end

.logger=(log) ⇒ Object 



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# File 'lib/roundhouse.rb', line 146

def self.logger=(log)
  Roundhouse::Logging.logger = log
end

.on(event, &block) ⇒ Object

Register a block to run at a point in the Roundhouse lifecycle. :startup, :quiet or :shutdown are valid events.

Roundhouse.configure_server do |config|
  config.on(:shutdown) do
    puts "Goodbye cruel world!"
  end
end

Raises:

  • (ArgumentError) 


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# File 'lib/roundhouse.rb', line 188

def self.on(event, &block)
  raise ArgumentError, "Symbols only please: #{event}" unless event.is_a?(Symbol)
  raise ArgumentError, "Invalid event name: #{event}" unless options[:lifecycle_events].key?(event)
  options[:lifecycle_events][event] << block
end

.options ⇒ Object 



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

def self.options
  @options ||= DEFAULTS.dup
end

.options=(opts) ⇒ Object 



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# File 'lib/roundhouse.rb', line 46

def self.options=(opts)
  @options = opts
end

.poll_interval=(interval) ⇒ Object

When set, overrides Roundhouse.options and sets the average interval that this process will delay before checking for scheduled jobs or job retries that are ready to run.

See roundhouse/scheduled.rb for an in-depth explanation of this value



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# File 'lib/roundhouse.rb', line 155

def self.poll_interval=(interval)
  $stderr.puts "DEPRECATION: `config.poll_interval = #{interval}` will be removed in Roundhouse 4. Please update to `config.average_scheduled_poll_interval = #{interval}`."
  self.options[:poll_interval_average] = interval
end

.redis ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/roundhouse.rb', line 77

def self.redis
  raise ArgumentError, "requires a block" unless block_given?
  redis_pool.with do |conn|
    retryable = true
    begin
      yield conn
    rescue Redis::CommandError => ex
      #2550 Failover can cause the server to become a slave, need
      # to disconnect and reopen the socket to get back to the master.
      (conn.disconnect!; retryable = false; retry) if retryable && ex.message =~ /READONLY/
      raise
    end
  end
end

.redis=(hash) ⇒ Object 



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# File 'lib/roundhouse.rb', line 96

def self.redis=(hash)
  @redis = if hash.is_a?(ConnectionPool)
    hash
  else
    Roundhouse::RedisConnection.create(hash)
  end
end

.redis_pool ⇒ Object 



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# File 'lib/roundhouse.rb', line 92

def self.redis_pool
  @redis ||= Roundhouse::RedisConnection.create
end

.remove_delay! ⇒ Object

Removes the generic aliases which MAY clash with names of already

created methods by other applications. The methods `roundhouse_delay`,
`roundhouse_delay_for` and `roundhouse_delay_until` can be used instead.



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# File 'lib/roundhouse/rails.rb', line 12

def self.remove_delay!
  # no op
  # This may be completely removed in the future
  # Those extensions make sense for Sidekiq, but do
  # not make sense for Roundhouse
end

.resume_queue(queue_id) ⇒ Object

Resumes a queue



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# File 'lib/roundhouse.rb', line 110

def self.resume_queue(queue_id)
  self.redis { |conn| Roundhouse::Monitor.resume(conn, queue_id) }
end

.server? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/roundhouse.rb', line 73

def self.server?
  defined?(Roundhouse::CLI)
end

.server_middleware {|@server_chain| ... } ⇒ Object

Yields:

  • (@server_chain) 


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# File 'lib/roundhouse.rb', line 120

def self.server_middleware
  @server_chain ||= Processor.default_middleware
  yield @server_chain if block_given?
  @server_chain
end

.suspend_queue(queue_id) ⇒ Object

Suspends a queue



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# File 'lib/roundhouse.rb', line 105

def self.suspend_queue(queue_id)
  self.redis { |conn| Roundhouse::Monitor.suspend(conn, queue_id) }
end

.❨╯°□°❩╯︵┻━┻ ⇒ Object 



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# File 'lib/roundhouse.rb', line 38

def self.