aboutsummaryrefslogtreecommitdiffstats
path: root/activejob/lib/active_job/queue_adapters.rb
blob: 3e3a474fbb2f8419d5b7828b323143cd65f30fb7 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
# frozen_string_literal: true

module ActiveJob
  # == Active Job adapters
  #
  # Active Job has adapters for the following queueing backends:
  #
  # * {Backburner}[https://github.com/nesquena/backburner]
  # * {Delayed Job}[https://github.com/collectiveidea/delayed_job]
  # * {Que}[https://github.com/chanks/que]
  # * {queue_classic}[https://github.com/QueueClassic/queue_classic]
  # * {Resque}[https://github.com/resque/resque]
  # * {Sidekiq}[http://sidekiq.org]
  # * {Sneakers}[https://github.com/jondot/sneakers]
  # * {Sucker Punch}[https://github.com/brandonhilkert/sucker_punch]
  # * {Active Job Async Job}[http://api.rubyonrails.org/classes/ActiveJob/QueueAdapters/AsyncAdapter.html]
  # * {Active Job Inline}[http://api.rubyonrails.org/classes/ActiveJob/QueueAdapters/InlineAdapter.html]
  # * Please Note: We are not accepting pull requests for new adapters. See the {README}[link:files/activejob/README_md.html] for more details.
  #
  # === Backends Features
  #
  #   |                   | Async | Queues | Delayed    | Priorities | Timeout | Retries |
  #   |-------------------|-------|--------|------------|------------|---------|---------|
  #   | Backburner        | Yes   | Yes    | Yes        | Yes        | Job     | Global  |
  #   | Delayed Job       | Yes   | Yes    | Yes        | Job        | Global  | Global  |
  #   | Que               | Yes   | Yes    | Yes        | Job        | No      | Job     |
  #   | queue_classic     | Yes   | Yes    | Yes*       | No         | No      | No      |
  #   | Resque            | Yes   | Yes    | Yes (Gem)  | Queue      | Global  | Yes     |
  #   | Sidekiq           | Yes   | Yes    | Yes        | Queue      | No      | Job     |
  #   | Sneakers          | Yes   | Yes    | No         | Queue      | Queue   | No      |
  #   | Sucker Punch      | Yes   | Yes    | Yes        | No         | No      | No      |
  #   | Active Job Async  | Yes   | Yes    | Yes        | No         | No      | No      |
  #   | Active Job Inline | No    | Yes    | N/A        | N/A        | N/A     | N/A     |
  #
  # ==== Async
  #
  # Yes: The Queue Adapter has the ability to run the job in a non-blocking manner.
  # It either runs on a separate or forked process, or on a different thread.
  #
  # No: The job is run in the same process.
  #
  # ==== Queues
  #
  # Yes: Jobs may set which queue they are run in with queue_as or by using the set
  # method.
  #
  # ==== Delayed
  #
  # Yes: The adapter will run the job in the future through perform_later.
  #
  # (Gem): An additional gem is required to use perform_later with this adapter.
  #
  # No: The adapter will run jobs at the next opportunity and cannot use perform_later.
  #
  # N/A: The adapter does not support queueing.
  #
  # NOTE:
  # queue_classic supports job scheduling since version 3.1.
  # For older versions you can use the queue_classic-later gem.
  #
  # ==== Priorities
  #
  # The order in which jobs are processed can be configured differently depending
  # on the adapter.
  #
  # Job: Any class inheriting from the adapter may set the priority on the job
  # object relative to other jobs.
  #
  # Queue: The adapter can set the priority for job queues, when setting a queue
  # with Active Job this will be respected.
  #
  # Yes: Allows the priority to be set on the job object, at the queue level or
  # as default configuration option.
  #
  # No: Does not allow the priority of jobs to be configured.
  #
  # N/A: The adapter does not support queueing, and therefore sorting them.
  #
  # ==== Timeout
  #
  # When a job will stop after the allotted time.
  #
  # Job: The timeout can be set for each instance of the job class.
  #
  # Queue: The timeout is set for all jobs on the queue.
  #
  # Global: The adapter is configured that all jobs have a maximum run time.
  #
  # N/A: This adapter does not run in a separate process, and therefore timeout
  # is unsupported.
  #
  # ==== Retries
  #
  # Job: The number of retries can be set per instance of the job class.
  #
  # Yes: The Number of retries can be configured globally, for each instance or
  # on the queue. This adapter may also present failed instances of the job class
  # that can be restarted.
  #
  # Global: The adapter has a global number of retries.
  #
  # N/A: The adapter does not run in a separate process, and therefore doesn't
  # support retries.
  #
  # === Async and Inline Queue Adapters
  #
  # Active Job has two built-in queue adapters intended for development and
  # testing: +:async+ and +:inline+.
  module QueueAdapters
    extend ActiveSupport::Autoload

    autoload :AsyncAdapter
    autoload :InlineAdapter
    autoload :BackburnerAdapter
    autoload :DelayedJobAdapter
    autoload :QueAdapter
    autoload :QueueClassicAdapter
    autoload :ResqueAdapter
    autoload :SidekiqAdapter
    autoload :SneakersAdapter
    autoload :SuckerPunchAdapter
    autoload :TestAdapter

    ADAPTER = "Adapter"
    private_constant :ADAPTER

    class << self
      # Returns adapter for specified name.
      #
      #   ActiveJob::QueueAdapters.lookup(:sidekiq)
      #   # => ActiveJob::QueueAdapters::SidekiqAdapter
      def lookup(name)
        const_get(name.to_s.camelize << ADAPTER)
      end
    end
  end
end