Moved to background job for sending twitter messages.

app/models/observer/ticket/article/communicate_twitter.rb

@@ -17,48 +17,7 @@ class Observer::Ticket::Article::CommunicateTwitter < ActiveRecord::Observer
     type = Ticket::Article::Type.lookup(id: record.type_id)
     return if type['name'] !~ /\Atwitter/i
 
-    ticket = Ticket.lookup(id: record.ticket_id)
-    raise "Can't find ticket.preferences for Ticket.find(#{record.ticket_id})" if !ticket.preferences
-    raise "Can't find ticket.preferences['channel_id'] for Ticket.find(#{record.ticket_id})" if !ticket.preferences['channel_id']
-    channel = Channel.lookup(id: ticket.preferences['channel_id'])
-    raise "No such channel id #{ticket.preferences['channel_id']}" if !channel
-    raise "Channel.find(#{channel.id}) isn't a twitter channel!" if channel.options[:adapter] !~ /\Atwitter/i
-    tweet = channel.deliver(
-      type:        type['name'],
-      to:          record.to,
-      body:        record.body,
-      in_reply_to: record.in_reply_to
-    )
-
-    # fill article with tweet info
-
-    # direct message
-    if tweet.class == Twitter::DirectMessage
-      record.from = "@#{tweet.sender.screen_name}"
-      record.to = "@#{tweet.recipient.screen_name}"
-
-    # regular tweet
-    elsif tweet.class == Twitter::Tweet
-      record.from = "@#{tweet.user.screen_name}"
-      if tweet.user_mentions
-        to = ''
-        twitter_mention_ids = []
-        tweet.user_mentions.each {|user|
-          if to != ''
-            to += ' '
-          end
-          to += "@#{user.screen_name}"
-          twitter_mention_ids.push user.id
-        }
-        record.to = to
-        record.preferences[:twitter_mention_ids] = twitter_mention_ids
-      end
-    else
-      raise "Unknown tweet type '#{tweet.class}'"
-    end
-
-    record.message_id = tweet.id
-    record.save
+    Delayed::Job.enqueue(Observer::Ticket::Article::CommunicateTwitter::BackgroundJob.new(record.id))
   end
 
 end

app/models/observer/ticket/article/communicate_twitter/background_job.rb

@@ -0,0 +1,109 @@
+class Observer::Ticket::Article::CommunicateTwitter::BackgroundJob
+  def initialize(id)
+    @article_id = id
+  end
+
+  def perform
+    article = Ticket::Article.find(@article_id)
+
+    # set retry count
+    if !article.preferences['delivery_retry']
+      article.preferences['delivery_retry'] = 0
+    end
+    article.preferences['delivery_retry'] += 1
+
+    ticket = Ticket.lookup(id: article.ticket_id)
+    log_error(article, "Can't find ticket.preferences for Ticket.find(#{article.ticket_id})") if !ticket.preferences
+    log_error(article, "Can't find ticket.preferences['channel_id'] for Ticket.find(#{article.ticket_id})") if !ticket.preferences['channel_id']
+    channel = Channel.lookup(id: ticket.preferences['channel_id'])
+    log_error(article, "No such channel id #{ticket.preferences['channel_id']}") if !channel
+    log_error(article, "Channel.find(#{channel.id}) isn't a twitter channel!") if channel.options[:adapter] !~ /\Atwitter/i
+
+    begin
+      tweet = channel.deliver(
+        type:        article.type.name,
+        to:          article.to,
+        body:        article.body,
+        in_reply_to: article.in_reply_to
+      )
+    rescue => e
+      log_error(article, e.message)
+      return
+    end
+    if !tweet
+      log_error(article, 'Unable to send message to twitter')
+      return
+    end
+
+    # fill article with tweet info
+
+    # direct message
+    if tweet.class == Twitter::DirectMessage
+      article.from = "@#{tweet.sender.screen_name}"
+      article.to = "@#{tweet.recipient.screen_name}"
+
+    # regular tweet
+    elsif tweet.class == Twitter::Tweet
+      article.from = "@#{tweet.user.screen_name}"
+      if tweet.user_mentions
+        to = ''
+        twitter_mention_ids = []
+        tweet.user_mentions.each {|user|
+          if to != ''
+            to += ' '
+          end
+          to += "@#{user.screen_name}"
+          twitter_mention_ids.push user.id
+        }
+        article.to = to
+        article.preferences[:twitter_mention_ids] = twitter_mention_ids
+      end
+    else
+      raise "Unknown tweet type '#{tweet.class}'"
+    end
+
+    # set delivery status
+    article.preferences['delivery_status_message'] = nil
+    article.preferences['delivery_status'] = 'success'
+    article.preferences['delivery_status_date'] = Time.zone.now
+
+    article.message_id = tweet.id.to_s
+    article.save
+
+  end
+
+  def log_error(local_record, message)
+    local_record.preferences['delivery_status'] = 'fail'
+    local_record.preferences['delivery_status_message'] = message
+    local_record.preferences['delivery_status_date'] = Time.zone.now
+    local_record.save
+    Rails.logger.error message
+
+    if local_record.preferences['delivery_retry'] > 3
+      Ticket::Article.create(
+        ticket_id: local_record.ticket_id,
+        content_type: 'text/plain',
+        body: "Unable to send tweet: #{message}",
+        internal: true,
+        sender: Ticket::Article::Sender.find_by(name: 'System'),
+        type: Ticket::Article::Type.find_by(name: 'note'),
+        updated_by_id: 1,
+        created_by_id: 1,
+      )
+      return
+    end
+
+    raise message
+  end
+
+  def max_attempts
+    4
+  end
+
+  def reschedule_at(current_time, attempts)
+    if Rails.env.production?
+      return current_time + attempts * 120.seconds
+    end
+    current_time + 5.seconds
+  end
+end

test/integration/twitter_test.rb

@@ -125,6 +125,10 @@ class TwitterTest < ActiveSupport::TestCase
       updated_by_id: 1,
       created_by_id: 1,
     )
+
+    Scheduler.worker(true)
+
+    article = Ticket::Article.find(article.id)
     assert(article, "outbound article created, text: #{text}")
     assert_equal(system_login, article.from, 'ticket article from')
     assert_equal('', article.to, 'ticket article to')
@@ -223,6 +227,10 @@ class TwitterTest < ActiveSupport::TestCase
       updated_by_id: 1,
       created_by_id: 1,
     )
+
+    Scheduler.worker(true)
+
+    article = Ticket::Article.find(article.id)
     assert(article, "outbound article created, text: #{reply_text}")
     assert_equal(system_login, article.from, 'ticket article from')
     assert_equal(customer_login, article.to, 'ticket article to')
@@ -306,6 +314,10 @@ class TwitterTest < ActiveSupport::TestCase
       updated_by_id: 1,
       created_by_id: 1,
     )
+
+    Scheduler.worker(true)
+
+    outbound_article = Ticket::Article.find(outbound_article.id)
     assert(outbound_article, 'outbound article created')
     assert_equal(2, outbound_article.ticket.articles.count, 'ticket article outbound count')
     assert_equal(system_login, outbound_article.from, 'ticket article from')
@@ -445,6 +457,10 @@ class TwitterTest < ActiveSupport::TestCase
       updated_by_id: 1,
       created_by_id: 1,
     )
+
+    Scheduler.worker(true)
+
+    article = Ticket::Article.find(article.id)
     assert(article, "outbound article created, text: #{reply_text}")
     assert_equal(system_login, article.from, 'ticket article from')
     assert_equal('', article.to, 'ticket article to')