Add backup/restore_latest task

README.markdown

@@ -77,6 +77,7 @@ Available tasks
 
     db:local:sync       || db:pull      # Synchronize your local database using remote database data
     db:remote:sync      || db:push      # Synchronize your remote database using local database data
+    db:remote:backup                    # Dumps database to db folder after that we can take it from there
 
 Example
 =======

lib/capistrano-db-tasks/compressors/bzip2.rb

@@ -32,7 +32,7 @@ def decompress(from, to = nil)
                "-c --stdout > #{to}"
              end
 
-        "bunzip2 -f #{from} #{to}"
+        "bunzip2 -k -f #{from} #{to}"
       end
 
     end

lib/capistrano-db-tasks/database.rb

@@ -121,6 +121,7 @@ def initialize(cap_instance)
 
     def dump
       @cap.execute "cd #{@cap.current_path} && #{dump_cmd} | #{compressor.compress('-', output_file)}"
+      @cap.execute("ln -fs #{@cap.current_path}/#{output_file} #{@cap.current_path}/db/latest.sql.#{compressor.file_extension}")
       self
     end
 
@@ -229,5 +230,16 @@ def local_to_remote(instance)
       remote_db.load(local_db.output_file, instance.fetch(:db_local_clean))
       File.unlink(local_db.output_file) if instance.fetch(:db_local_clean)
     end
+
+    def backup(instance)
+      remote_db = Database::Remote.new(instance)
+      remote_db.dump
+      remote_db.download
+    end
+
+    def restore_latest(instance)
+      remote_db = Database::Remote.new(instance)
+      remote_db.load("#{instance.current_path}/db/latest.sql.#{remote_db.compressor.file_extension}", true)
+    end
   end
 end

lib/capistrano-db-tasks/dbtasks.rb

@@ -30,6 +30,20 @@
         end
       end
     end
+
+    desc 'Dumps database to db folder after that we can take it from there'
+    task :backup do
+      on roles(:db) do
+        Database.backup(self)
+      end
+    end
+
+    desc 'Restores the latest database dump from the remote folder (pairs with db:remote:backup)'
+    task :restore_latest do
+      on roles(:db) do
+        Database.restore_latest(self)
+      end
+    end
   end
 
   namespace :local do