Class: Fanforce::Workers

Inherits:
Object
  • Object
show all
Defined in:
lib/fanforce/workers/version.rb,
lib/fanforce/workers/workers.rb

Constant Summary collapse

VERSION = 
'0.8.1'

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(opts = {}) ⇒ Workers

Returns a new instance of Workers.



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# File 'lib/fanforce/workers/workers.rb', line 3

def initialize(opts={})
  @opts = opts
end

Class Method Details

.add_error(queue_id, error) ⇒ Object 



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# File 'lib/fanforce/workers/workers.rb', line 86

def self.add_error(queue_id, error)
  self.new.add_error(queue_id, error)
end

.current_job ⇒ Object 



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# File 'lib/fanforce/workers/workers.rb', line 128

def self.current_job
  @current_job
end

.current_job=(job) ⇒ Object 



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# File 'lib/fanforce/workers/workers.rb', line 124

def self.current_job=(job)
  @current_job = job
end

.current_params ⇒ Object 



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# File 'lib/fanforce/workers/workers.rb', line 112

def self.current_params
  @current_params
end

.current_params=(params) ⇒ Object 



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# File 'lib/fanforce/workers/workers.rb', line 108

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

.current_queue_id ⇒ Object 



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# File 'lib/fanforce/workers/workers.rb', line 96

def self.current_queue_id
  @current_queue_id
end

.current_queue_id=(queue_id) ⇒ Object 



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# File 'lib/fanforce/workers/workers.rb', line 92

def self.current_queue_id=(queue_id)
  @current_queue_id = queue_id
end

.current_retries ⇒ Object 



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# File 'lib/fanforce/workers/workers.rb', line 120

def self.current_retries
  @current_retries
end

.current_retries=(retries) ⇒ Object 



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# File 'lib/fanforce/workers/workers.rb', line 116

def self.current_retries=(retries)
  @current_retries = retries
end

.current_worker_env ⇒ Object 



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# File 'lib/fanforce/workers/workers.rb', line 104

def self.current_worker_env
  @current_worker_env
end

.current_worker_env=(env_vars) ⇒ Object 



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# File 'lib/fanforce/workers/workers.rb', line 100

def self.current_worker_env=(env_vars)
  @current_worker_env = env_vars
end

.delete_job(job = nil) ⇒ Object 



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# File 'lib/fanforce/workers/workers.rb', line 192

def self.delete_job(job=nil)
  return if job.nil? and current_job.nil?
  (job || current_job).delete
  self.current_job = nil
end

.enqueue(queue_id, params, options = {}) ⇒ Object 



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# File 'lib/fanforce/workers/workers.rb', line 82

def self.enqueue(queue_id, params, options={})
  self.new.enqueue(queue_id, params, options)
end

.retry(options) ⇒ Object 



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# File 'lib/fanforce/workers/workers.rb', line 154

def self.retry(options)
  self.new.enqueue(current_queue_id, current_params, options.merge(retries: current_retries + 1))
end

.run(worker_data, &code_block) ⇒ Object 



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# File 'lib/fanforce/workers/workers.rb', line 132

def self.run(worker_data, &code_block)
  require '.pluginenv'
  require 'iron_mq'
  require 'iron_cache'
  require 'fanforce/api'
  require 'active_support/all'

  self.current_queue_id   = worker_data['queue_id']
  self.current_worker_env = worker_data['env_vars']
  queue = IronMQ::Client.new.queue(current_queue_id)

  job_num = 0
  puts 'PROCESSING...'
  while (job = queue.get(timeout: 3600)) do
    puts "JOB #{job_num+=1}: #{job.body}"
    run_job job, &code_block
    self.delete_job
  end
  self.delete_job
  puts 'DONE'
end

.run_job(job, &code_block) ⇒ Object 



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# File 'lib/fanforce/workers/workers.rb', line 158

def self.run_job(job, &code_block)
  puts '----------------------------------------------------------'
  print 'PROCESSING MESSAGE: '

  task_data = Fanforce.decode_json(job.body)
  self.current_job = job
  self.current_params  = task_data[:params]
  self.current_retries = task_data[:retries]

  set_env_vars(current_worker_env)
  code_block.call(task_data[:params].clone, retries: task_data[:retries], queue_id: current_queue_id)
  self.delete_job(job)

rescue Exception => e
  if job.nil?
    puts 'MESSAGE IS NIL'
    return
  end
  error = task_data.merge(
    exception: e.class.name,
    message: e.message,
    backtrace: e.backtrace,
    errored_at: Time.now,
    env_vars: current_worker_env
  )
  error[:curl_command] = e.curl_command if e.respond_to?(:curl_command)

  puts "ADDING TO ERROR CACHE: #{error.to_json}"
  self.delete_job(job)
  puts 'DELETED MESSAGE'

  self.add_error current_queue_id, error
end

.set_env_vars(vars) ⇒ Object 



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# File 'lib/fanforce/workers/workers.rb', line 198

def self.set_env_vars(vars)
  vars.each {|k,v| ENV[k.to_s]=v }
  load 'fanforce.rb'
end

Instance Method Details

#add_error(queue_id, error) ⇒ Object 



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# File 'lib/fanforce/workers/workers.rb', line 23

def add_error(queue_id, error)
  require 'uuidtools'
  details_id = UUIDTools::UUID.random_create.to_s
  iron_cache.cache("#{queue_id}-ERRORS").put(details_id, error.to_json)
  iron_mq.queue("#{queue_id}-ERRORS").post({
      details_id: details_id,
      exception: truncate(error[:exception]),
      message: truncate(error[:message].to_s),
      params: truncate(error[:params].to_json),
      errored_at: error[:errored_at],
      retries: error[:retries],
      env_vars: truncate(error[:env_vars].to_json),
      curl_command: truncate(error[:curl_command].to_s)
  }.to_json)
rescue => e
  puts '-----------------------------------------------------'
  puts 'WORKER ERROR WHILE RECOVERING FROM JOB ERROR:'
  puts e.message
  puts e.backtrace
  puts '-----------------------------------------------------'
  puts 'JOB ERROR:'
  puts "details_id: #{details_id}"
  puts "exception: #{truncate(error[:exception])}"
  puts "message: #{truncate(error[:message].to_s)}"
  puts "params: #{truncate(error[:params].to_json)}"
  puts "errored_at: #{error[:errored_at]}"
  puts "retries: #{error[:retries]}"
  puts "env_vars: #{truncate(error[:env_vars].to_json)}"
  puts "curl_command: #{truncate(error[:curl_command].to_s)}"
end

#delete_error(queue_id, job_id, details_id) ⇒ Object 



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# File 'lib/fanforce/workers/workers.rb', line 54

def delete_error(queue_id, job_id, details_id)
  iron_mq.queue("#{queue_id}-ERRORS").delete(job_id)
  iron_cache.cache("#{queue_id}-ERRORS").delete(details_id)
end

#enqueue(queue_id, params, options = {}) ⇒ Object 



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# File 'lib/fanforce/workers/workers.rb', line 17

def enqueue(queue_id, params, options={})
  retries = (options[:retries].present?) ? options.delete(:retries) : 0
  raise 'Params being sent to the queue must be a Hash' if !params.is_a?(Hash)
  iron_mq.queue(queue_id).post({params: params, retries: retries}.to_json, options)
end

#error_details(queue_id, details_id) ⇒ Object 



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# File 'lib/fanforce/workers/workers.rb', line 59

def error_details(queue_id, details_id)
  cache = iron_cache.cache("#{queue_id}-ERRORS").get(details_id)
  MultiJson.load(cache.value, :symbolize_keys => true)
end

#iron_cache ⇒ Object 



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# File 'lib/fanforce/workers/workers.rb', line 12

def iron_cache
  require 'iron_cache'
  @iron_cache ||= IronCache::Client.new(:token => @opts[:token] || ENV['IRON_TOKEN'], :project_id => @opts[:project_id] || ENV['IRON_PROJECT_ID'])
end

#iron_mq ⇒ Object 



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# File 'lib/fanforce/workers/workers.rb', line 7

def iron_mq
  require 'iron_mq'
  @iron_mq ||= IronMQ::Client.new(:token => @opts[:token] || ENV['IRON_TOKEN'], :project_id => @opts[:project_id] || ENV['IRON_PROJECT_ID'])
end

#retry_error(queue_id, job_id, details_id) ⇒ Object 



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# File 'lib/fanforce/workers/workers.rb', line 64

def retry_error(queue_id, job_id, details_id)
  cache = iron_cache.cache("#{queue_id}-ERRORS").get(details_id)
  cache_data = MultiJson.load(cache.value, :symbolize_keys => true)
  enqueue(queue_id, cache_data[:params], :retries => cache_data[:retries] + 1)

  cache.delete and iron_mq.queue("#{queue_id}-ERRORS").delete(job_id)
end

#truncate(text, length = 130, truncate_string = "...") ⇒ Object 



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# File 'lib/fanforce/workers/workers.rb', line 72

def truncate(text, length=130, truncate_string="...")
  if text
    l = length - truncate_string.chars.to_a.length
    chars = text.chars.to_a
    (chars.length > length ? chars[0...l].join('') + truncate_string : text).to_s
  end
end