turns out we do need delayed_job

Gemfile

@@ -21,6 +21,8 @@ gem 'snorlax', '~> 0.1.3'
 gem 'httparty'
 gem 'sequenced', '~> 2.0.0'
 gem 'active_model_serializers', '~> 0.8.1'
+gem 'delayed_job', '~> 4.0.2'
+gem 'delayed_job_active_record', '~> 4.0.1'
 
 gem 'paperclip'
 gem 'aws-sdk', '< 2.0'

Gemfile.lock

@@ -73,6 +73,11 @@ GEM
     coffee-script-source (1.10.0)
     concurrent-ruby (1.0.1)
     debug_inspector (0.0.2)
+    delayed_job (4.0.6)
+      activesupport (>= 3.0, < 5.0)
+    delayed_job_active_record (4.0.3)
+      activerecord (>= 3.0, < 5.0)
+      delayed_job (>= 3.0, < 4.1)
     devise (3.5.6)
       bcrypt (~> 3.0)
       orm_adapter (~> 0.1)
@@ -262,6 +267,8 @@ DEPENDENCIES
   binding_of_caller
   cancan
   coffee-rails
+  delayed_job (~> 4.0.2)
+  delayed_job_active_record (~> 4.0.1)
   devise
   dotenv
   factory_girl_rails

Procfile

@@ -1,2 +1,3 @@
 web: bundle exec rails server -p $PORT
+worker:  bundle exec rake jobs:work
 

app/models/webhooks/slack/synapse_added_to_map.rb

@@ -1,7 +1,7 @@
 class Webhooks::Slack::SynapseAddedToMap < Webhooks::Slack::Base
 
   def text
-    "\"*#{eventable.synapse.topic1.name}* #{eventable.synapse.desc || '->'} *#{eventable.synapse.topic2.name}*\" was added as a connection to the map *#{view_map_on_metamaps()}*"
+    "\"*#{eventable.mappable.topic1.name}* #{eventable.mappable.desc || '->'} *#{eventable.mappable.topic2.name}*\" was added as a connection to the map *#{view_map_on_metamaps()}*"
   end
 
   def attachment_fallback

app/models/webhooks/slack/topic_added_to_map.rb

@@ -1,11 +1,11 @@
 class Webhooks::Slack::TopicAddedToMap < Webhooks::Slack::Base
 
   def text
-    "New #{eventable.topic.metacode.name} topic *#{eventable.topic.name}* was added to the map *#{view_map_on_metamaps()}*"
+    "New #{eventable.mappable.metacode.name} topic *#{eventable.mappable.name}* was added to the map *#{view_map_on_metamaps()}*"
   end
 
   def icon_url
-    eventable.topic.metacode.icon
+    eventable.mappable.metacode.icon
   end
 
   def attachment_fallback

app/serializers/webhook_serializer.rb

@@ -1,3 +1,3 @@
 class WebhookSerializer < ActiveModel::Serializer
-  attributes :text, :username #, :attachments #, :icon_url
+  attributes :text, :username, :icon_url #, :attachments
 end

bin/delayed_job

@@ -0,0 +1,5 @@
+#!/usr/bin/env ruby
+
+require File.expand_path(File.join(File.dirname(__FILE__), '..', 'config', 'environment'))
+require 'delayed/command'
+Delayed::Command.new(ARGV).daemonize

config/application.rb

@@ -10,7 +10,7 @@ Dotenv.load ".env.#{ENV["RAILS_ENV"]}", '.env'
 
 module Metamaps
   class Application < Rails::Application
-    
+    config.active_job.queue_adapter = :delayed_job    
     # Settings in config/environments/* take precedence over those specified here.
     # Application configuration should go into files in config/initializers
     # -- all .rb files in that directory are automatically loaded.

db/migrate/20160313003721_create_delayed_jobs.rb

@@ -0,0 +1,22 @@
+class CreateDelayedJobs < ActiveRecord::Migration
+  def self.up
+    create_table :delayed_jobs, force: true do |table|
+      table.integer :priority, default: 0, null: false # Allows some jobs to jump to the front of the queue
+      table.integer :attempts, default: 0, null: false # Provides for retries, but still fail eventually.
+      table.text :handler,                 null: false # YAML-encoded string of the object that will do work
+      table.text :last_error                           # reason for last failure (See Note below)
+      table.datetime :run_at                           # When to run. Could be Time.zone.now for immediately, or sometime in the future.
+      table.datetime :locked_at                        # Set when a client is working on this object
+      table.datetime :failed_at                        # Set when all retries have failed (actually, by default, the record is deleted instead)
+      table.string :locked_by                          # Who is working on this object (if locked)
+      table.string :queue                              # The name of the queue this job is in
+      table.timestamps null: true
+    end
+
+    add_index :delayed_jobs, [:priority, :run_at], name: "delayed_jobs_priority"
+  end
+
+  def self.down
+    drop_table :delayed_jobs
+  end
+end

db/schema.rb

@@ -11,11 +11,27 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20160312235006) do
+ActiveRecord::Schema.define(version: 20160313003721) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
+  create_table "delayed_jobs", force: :cascade do |t|
+    t.integer  "priority",   default: 0, null: false
+    t.integer  "attempts",   default: 0, null: false
+    t.text     "handler",                null: false
+    t.text     "last_error"
+    t.datetime "run_at"
+    t.datetime "locked_at"
+    t.datetime "failed_at"
+    t.string   "locked_by"
+    t.string   "queue"
+    t.datetime "created_at"
+    t.datetime "updated_at"
+  end
+
+  add_index "delayed_jobs", ["priority", "run_at"], name: "delayed_jobs_priority", using: :btree
+
   create_table "events", force: :cascade do |t|
     t.string   "kind",           limit: 255
     t.integer  "eventable_id"