optimise mkdir commands

lib/capistrano/dsl/paths.rb

@@ -42,6 +42,22 @@ module Capistrano
       def asset_timestamp
         env.timestamp.strftime("%Y%m%d%H%M.%S")
       end
+
+      def linked_dirs(parent)
+        fetch(:linked_dirs, []).map { |dir| parent.join(dir) }
+      end
+
+      def linked_files(parent)
+        fetch(:linked_files, []).map { |file| parent.join(file) }
+      end
+
+      def linked_file_dirs(parent)
+        linked_files(parent).map { |file| file.dirname }
+      end
+
+      def linked_dir_parents(parent)
+        linked_dirs(parent).map { |dir| dir.dirname }
+      end
     end
   end
 end

lib/capistrano/tasks/deploy.rake

@@ -36,21 +36,16 @@ namespace :deploy do
     desc 'Check directories to be linked exist in shared'
     task :linked_dirs do
       on roles :app do
-        fetch(:linked_dirs).each do |dir|
-          dir = shared_path.join(dir)
-          execute :mkdir, '-pv', dir
-        end
+        execute :mkdir, '-pv', linked_dirs(shared_path)
       end
     end
 
     desc 'Check files to be linked exist in shared'
     task :linked_files do
       on roles :app do |host|
-        fetch(:linked_files).each do |file|
-          file_path = shared_path.join(file)
-          parent = file_path.dirname
-          execute :mkdir, '-pv', parent
-          unless test "[ -f #{file_path} ]"
+        execute :mkdir, '-pv', linked_file_dirs(shared_path)
+        linked_files(shared_path).each do |file|
+          unless test "[ -f #{file} ]"
             error t(:linked_file_does_not_exist, file: file, host: host)
             exit 1
           end
@@ -77,11 +72,11 @@ namespace :deploy do
     desc 'Symlink linked directories'
     task :linked_dirs do
       on roles :app do
+        execute :mkdir, '-pv', linked_dir_parents(release_path)
+
         fetch(:linked_dirs).each do |dir|
           target = release_path.join(dir)
           source = shared_path.join(dir)
-          parent = target.dirname
-          execute :mkdir, '-pv', parent
           unless test "[ -L #{target} ]"
             if test "[ -f #{target} ]"
               execute :rm, '-rf', target
@@ -95,11 +90,11 @@ namespace :deploy do
     desc 'Symlink linked files'
     task :linked_files do
       on roles :app do
+        execute :mkdir, '-pv', linked_file_dirs(release_path)
+
         fetch(:linked_files).each do |file|
           target = release_path.join(file)
           source = shared_path.join(file)
-          parent = target.dirname
-          execute :mkdir, '-pv', parent
           unless test "[ -L #{target} ]"
             if test "[ -f #{target} ]"
               execute :rm, target