Add a rake task to the deployment to backup the DB.

Apparently needed with all the broken migrations...

config/deploy.rb

@@ -36,9 +36,10 @@ task deploy: :environment do
     invoke :'git:clone'
     invoke :'deploy:link_shared_paths'
     invoke :'bundle:install'
+    invoke :'dump_db'
     invoke :'rails:db_migrate'
     invoke :'rails:assets_precompile'
-    invoke :notify_errbit
+    #invoke :notify_errbit
 
     to :launch do
       queue "sudo /etc/init.d/apache2 restart"
@@ -55,3 +56,8 @@ task :notify_errbit do
   user = ENV['USER']
   queue "bundle exec rake hoptoad:deploy TO=#{rails_env} REVISION=#{revision} REPO=#{repository} USER=#{user}"
 end
+
+desc 'Back ups the database'
+task :dump_db do
+  queue "bundle exec rake dump_db"
+end

lib/tasks/dump_db.rake

@@ -0,0 +1,11 @@
+require 'yaml'
+task :dump_db do
+  yaml = YAML.load_file("config/database.yml")
+  conf = yaml["production"]
+  filename = "#{conf["database"]}-#{Time.now.strftime("%Y-%m-%d-%H:%M:%S:%L")}.sql"
+  if conf["adapter"] == 'mysql2'
+    system "mysqldump -u #{conf["username"]} --password=#{conf["password"]} -h #{conf["host"]} #{conf["database"]} > ~/#{filename}"
+  else
+    puts "Error: This rake task only works for MYSQL"
+  end
+end