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job.rb
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job.rb
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require "qless"
require "qless/queue"
require "qless/lua"
require "redis"
require "json"
module Qless
class BaseJob
def initialize(client, jid)
@client = client
@jid = jid
end
def klass
@klass ||= @klass_name.split('::').inject(Kernel) { |context, name| context.const_get(name) }
end
def queue
@queue ||= Queue.new(@queue_name, @client)
end
end
class Job < BaseJob
attr_reader :jid, :expires_at, :state, :queue_name, :history, :worker_name, :failure, :klass_name, :tracked, :dependencies, :dependents
attr_reader :original_retries, :retries_left
attr_accessor :data, :priority, :tags
def perform
klass.perform(self)
end
def self.build(client, klass, attributes = {})
defaults = {
"jid" => Qless.generate_jid,
"data" => {},
"klass" => klass.to_s,
"priority" => 0,
"tags" => [],
"worker" => "mock_worker",
"expires" => Time.now + (60 * 60), # an hour from now
"state" => "running",
"tracked" => false,
"queue" => "mock_queue",
"retries" => 5,
"remaining" => 5,
"failure" => {},
"history" => [],
"dependencies" => [],
"dependents" => []
}
attributes = defaults.merge(Qless.stringify_hash_keys(attributes))
attributes["data"] = JSON.load(JSON.dump attributes["data"])
new(client, attributes)
end
def initialize(client, atts)
super(client, atts.fetch('jid'))
%w{jid data priority tags state tracked
failure history dependencies dependents}.each do |att|
self.instance_variable_set("@#{att}".to_sym, atts.fetch(att))
end
@expires_at = atts.fetch('expires')
@klass_name = atts.fetch('klass')
@queue_name = atts.fetch('queue')
@worker_name = atts.fetch('worker')
@original_retries = atts.fetch('retries')
@retries_left = atts.fetch('remaining')
# This is a silly side-effect of Lua doing JSON parsing
@tags = [] if @tags == {}
@dependents = [] if @dependents == {}
@dependencies = [] if @dependencies == {}
@state_changed = false
end
def priority=(priority)
if @client._priority.call([], [@jid, priority])
@priority = priority
end
end
def [](key)
@data[key]
end
def []=(key, val)
@data[key] = val
end
def to_s
inspect
end
def description
"#{@jid} (#{@klass_name} / #{@queue_name} / #{@state})"
end
def inspect
"<Qless::Job #{description}>"
end
def ttl
@expires_at - Time.now.to_f
end
# Move this from it's current queue into another
def move(queue)
note_state_change do
@client._put.call([queue], [
@jid, @klass_name, JSON.generate(@data), Time.now.to_f, 0
])
end
end
# Fail a job
def fail(group, message)
note_state_change do
@client._fail.call([], [
@jid,
@worker_name,
group, message,
Time.now.to_f,
JSON.generate(@data)]) || false
end
end
# Heartbeat a job
def heartbeat()
@client._heartbeat.call([], [
@jid,
@worker_name,
Time.now.to_f,
JSON.generate(@data)]) || false
end
CantCompleteError = Class.new(Qless::Error)
# Complete a job
# Options include
# => next (String) the next queue
# => delay (int) how long to delay it in the next queue
def complete(nxt=nil, options={})
response = note_state_change do
if nxt.nil?
@client._complete.call([], [
@jid, @worker_name, @queue_name, Time.now.to_f, JSON.generate(@data)])
else
@client._complete.call([], [
@jid, @worker_name, @queue_name, Time.now.to_f, JSON.generate(@data), 'next', nxt, 'delay',
options.fetch(:delay, 0), 'depends', JSON.generate(options.fetch(:depends, []))])
end
end
return response if response
description = if reloaded_instance = @client.jobs[@jid]
reloaded_instance.description
else
self.description + " -- can't be reloaded"
end
raise CantCompleteError, "Failed to complete #{description}"
end
def state_changed?
@state_changed
end
def cancel
note_state_change do
@client._cancel.call([], [@jid])
end
end
def track()
@client._track.call([], ['track', @jid, Time.now.to_f])
end
def untrack
@client._track.call([], ['untrack', @jid, Time.now.to_f])
end
def tag(*tags)
@client._tag.call([], ['add', @jid, Time.now.to_f] + tags)
end
def untag(*tags)
@client._tag.call([], ['remove', @jid, Time.now.to_f] + tags)
end
def retry(delay=0)
note_state_change do
results = @client._retry.call([], [@jid, @queue_name, @worker_name, Time.now.to_f, delay])
results.nil? ? false : results
end
end
def depend(*jids)
!!@client._depends.call([], [@jid, 'on'] + jids)
end
def undepend(*jids)
!!@client._depends.call([], [@jid, 'off'] + jids)
end
private
def note_state_change
result = yield
@state_changed = true
result
end
end
class RecurringJob < BaseJob
attr_reader :jid, :data, :priority, :tags, :retries, :interval, :count, :queue_name, :klass_name
def initialize(client, atts)
super(client, atts.fetch('jid'))
%w{jid data priority tags retries interval count}.each do |att|
self.instance_variable_set("@#{att}".to_sym, atts.fetch(att))
end
@klass_name = atts.fetch('klass')
@queue_name = atts.fetch('queue')
@tags = [] if @tags == {}
end
def priority=(value)
@client._recur.call([], ['update', @jid, 'priority', value])
@priority = value
end
def retries=(value)
@client._recur.call([], ['update', @jid, 'retries', value])
@retries = value
end
def interval=(value)
@client._recur.call([], ['update', @jid, 'interval', value])
@interval = value
end
def data=(value)
@client._recur.call([], ['update', @jid, 'data', JSON.generate(value)])
@data = value
end
def klass=(value)
@client._recur.call([], ['update', @jid, 'klass', value.to_s])
@klass_name = value.to_s
end
def move(queue)
@client._recur.call([], ['update', @jid, 'queue', queue])
@queue_name = queue
end
def cancel
@client._recur.call([], ['off', @jid])
end
def tag(*tags)
@client._recur.call([], ['tag', @jid] + tags)
end
def untag(*tags)
@client._recur.call([], ['untag', @jid] + tags)
end
end
end