class Sidekiq::Client

Attributes

redis_pool[RW]

Public Class Methods

enqueue(klass, *args) click to toggle source

Resque compatibility helpers. Note all helpers should go through Worker#client_push.

Example usage:

Sidekiq::Client.enqueue(MyWorker, 'foo', 1, :bat => 'bar')

Messages are enqueued to the 'default' queue.

# File lib/sidekiq/client.rb, line 146
def enqueue(klass, *args)
  klass.client_push('class' => klass, 'args' => args)
end
enqueue_in(interval, klass, *args) click to toggle source

Example usage:

Sidekiq::Client.enqueue_in(3.minutes, MyWorker, 'foo', 1, :bat => 'bar')
# File lib/sidekiq/client.rb, line 174
def enqueue_in(interval, klass, *args)
  klass.perform_in(interval, *args)
end
enqueue_to(queue, klass, *args) click to toggle source

Example usage:

Sidekiq::Client.enqueue_to(:queue_name, MyWorker, 'foo', 1, :bat => 'bar')
# File lib/sidekiq/client.rb, line 153
def enqueue_to(queue, klass, *args)
  klass.client_push('queue' => queue, 'class' => klass, 'args' => args)
end
enqueue_to_in(queue, interval, klass, *args) click to toggle source

Example usage:

Sidekiq::Client.enqueue_to_in(:queue_name, 3.minutes, MyWorker, 'foo', 1, :bat => 'bar')
# File lib/sidekiq/client.rb, line 160
def enqueue_to_in(queue, interval, klass, *args)
  int = interval.to_f
  now = Time.now.to_f
  ts = (int < 1_000_000_000 ? now + int : int)

  item = { 'class' => klass, 'args' => args, 'at' => ts, 'queue' => queue }
  item.delete('at') if ts <= now

  klass.client_push(item)
end
new(redis_pool=nil) click to toggle source

Sidekiq::Client normally uses the default Redis pool but you may pass a custom ConnectionPool if you want to shard your Sidekiq jobs across several Redis instances (for scalability reasons, e.g.)

Sidekiq::Client.new(ConnectionPool.new { Redis.new })

Generally this is only needed for very large Sidekiq installs processing thousands of jobs per second. I don't recommend sharding unless you cannot scale any other way (e.g. splitting your app into smaller apps).

# File lib/sidekiq/client.rb, line 40
def initialize(redis_pool=nil)
  @redis_pool = redis_pool || Thread.current[:sidekiq_via_pool] || Sidekiq.redis_pool
end
push(item) click to toggle source
# File lib/sidekiq/client.rb, line 130
def push(item)
  new.push(item)
end
push_bulk(items) click to toggle source
# File lib/sidekiq/client.rb, line 134
def push_bulk(items)
  new.push_bulk(items)
end
via(pool) { || ... } click to toggle source

Allows sharding of jobs across any number of Redis instances. All jobs defined within the block will use the given Redis connection pool.

pool = ConnectionPool.new { Redis.new }
Sidekiq::Client.via(pool) do
  SomeWorker.perform_async(1,2,3)
  SomeOtherWorker.perform_async(1,2,3)
end

Generally this is only needed for very large Sidekiq installs processing thousands of jobs per second. I do not recommend sharding unless you cannot scale any other way (e.g. splitting your app into smaller apps).

# File lib/sidekiq/client.rb, line 119
def self.via(pool)
  raise ArgumentError, "No pool given" if pool.nil?
  current_sidekiq_pool = Thread.current[:sidekiq_via_pool]
  Thread.current[:sidekiq_via_pool] = pool
  yield
ensure
  Thread.current[:sidekiq_via_pool] = current_sidekiq_pool
end

Public Instance Methods

middleware() { |chain| ... } click to toggle source

Define client-side middleware:

client = Sidekiq::Client.new
client.middleware do |chain|
  chain.use MyClientMiddleware
end
client.push('class' => 'SomeWorker', 'args' => [1,2,3])

All client instances default to the globally-defined Sidekiq.client_middleware but you can change as necessary.

# File lib/sidekiq/client.rb, line 19
def middleware(&block)
  @chain ||= Sidekiq.client_middleware
  if block_given?
    @chain = @chain.dup
    yield @chain
  end
  @chain
end
push(item) click to toggle source

The main method used to push a job to Redis. Accepts a number of options:

queue - the named queue to use, default 'default'
class - the worker class to call, required
args - an array of simple arguments to the perform method, must be JSON-serializable
at - timestamp to schedule the job (optional), must be Numeric (e.g. Time.now.to_f)
retry - whether to retry this job if it fails, default true or an integer number of retries
backtrace - whether to save any error backtrace, default false

If class is set to the class name, the jobs' options will be based on Sidekiq's default worker options. Otherwise, they will be based on the job class's options.

Any options valid for a worker class's sidekiq_options are also available here.

All options must be strings, not symbols. NB: because we are serializing to JSON, all symbols in 'args' will be converted to strings. Note that +backtrace: true+ can take quite a bit of space in Redis; a large volume of failing jobs can start Redis swapping if you aren't careful.

Returns a unique Job ID. If middleware stops the job, nil will be returned instead.

Example:

push('queue' => 'my_queue', 'class' => MyWorker, 'args' => ['foo', 1, :bat => 'bar'])
# File lib/sidekiq/client.rb, line 68
def push(item)
  normed = normalize_item(item)
  payload = process_single(item['class'], normed)

  if payload
    raw_push([payload])
    payload['jid']
  end
end
push_bulk(items) click to toggle source

Push a large number of jobs to Redis. This method cuts out the redis network round trip latency. I wouldn't recommend pushing more than 1000 per call but YMMV based on network quality, size of job args, etc. A large number of jobs can cause a bit of Redis command processing latency.

Takes the same arguments as push except that args is expected to be an Array of Arrays. All other keys are duplicated for each job. Each job is run through the client middleware pipeline and each job gets its own Job ID as normal.

Returns an array of the of pushed jobs' jids. The number of jobs pushed can be less than the number given if the middleware stopped processing for one or more jobs.

# File lib/sidekiq/client.rb, line 91
def push_bulk(items)
  arg = items['args'].first
  return [] unless arg # no jobs to push
  raise ArgumentError, "Bulk arguments must be an Array of Arrays: [[1], [2]]" if !arg.is_a?(Array)

  normed = normalize_item(items)
  payloads = items['args'].map do |args|
    copy = normed.merge('args' => args, 'jid' => SecureRandom.hex(12), 'enqueued_at' => Time.now.to_f)
    result = process_single(items['class'], copy)
    result ? result : nil
  end.compact

  raw_push(payloads) if !payloads.empty?
  payloads.collect { |payload| payload['jid'] }
end

Private Instance Methods

atomic_push(conn, payloads) click to toggle source
# File lib/sidekiq/client.rb, line 190
def atomic_push(conn, payloads)
  if payloads.first['at']
    conn.zadd('schedule', payloads.map do |hash|
      at = hash.delete('at').to_s
      [at, Sidekiq.dump_json(hash)]
    end)
  else
    q = payloads.first['queue']
    now = Time.now.to_f
    to_push = payloads.map do |entry|
      entry['enqueued_at'] = now
      Sidekiq.dump_json(entry)
    end
    conn.sadd('queues', q)
    conn.lpush("queue:#{q}", to_push)
  end
end
normalize_item(item) click to toggle source
# File lib/sidekiq/client.rb, line 216
def normalize_item(item)
  raise(ArgumentError, "Job must be a Hash with 'class' and 'args' keys: { 'class' => SomeWorker, 'args' => ['bob', 1, :foo => 'bar'] }") unless item.is_a?(Hash) && item.has_key?('class') && item.has_key?('args')
  raise(ArgumentError, "Job args must be an Array") unless item['args'].is_a?(Array)
  raise(ArgumentError, "Job class must be either a Class or String representation of the class name") unless item['class'].is_a?(Class) || item['class'].is_a?(String)
  raise(ArgumentError, "Job 'at' must be a Numeric timestamp") if item.has_key?('at') && !item['at'].is_a?(Numeric)
  #raise(ArgumentError, "Arguments must be native JSON types, see https://github.com/mperham/sidekiq/wiki/Best-Practices") unless JSON.load(JSON.dump(item['args'])) == item['args']

  normalized_hash(item['class'])
    .each{ |key, value| item[key] = value if item[key].nil? }

  item['class'] = item['class'].to_s
  item['queue'] = item['queue'].to_s
  item['jid'] ||= SecureRandom.hex(12)
  item['created_at'] ||= Time.now.to_f
  item
end
normalized_hash(item_class) click to toggle source
# File lib/sidekiq/client.rb, line 233
def normalized_hash(item_class)
  if item_class.is_a?(Class)
    raise(ArgumentError, "Message must include a Sidekiq::Worker class, not class name: #{item_class.ancestors.inspect}") if !item_class.respond_to?('get_sidekiq_options')
    item_class.get_sidekiq_options
  else
    Sidekiq.default_worker_options
  end
end
process_single(worker_class, item) click to toggle source
# File lib/sidekiq/client.rb, line 208
def process_single(worker_class, item)
  queue = item['queue']

  middleware.invoke(worker_class, item, queue, @redis_pool) do
    item
  end
end
raw_push(payloads) click to toggle source
# File lib/sidekiq/client.rb, line 181
def raw_push(payloads)
  @redis_pool.with do |conn|
    conn.multi do
      atomic_push(conn, payloads)
    end
  end
  true
end