Merge branch 'develop' for release 0.8.0

* Added support for zero-down deployment (PR #104, issue #34)
* Added call to "composer dump-autoload --no-dev --optimize" following DI compliation (issue #102)

Author: davidalger

CHANGELOG.md

@@ -1,5 +1,11 @@
 # Capistrano::Magento2 Change Log
 
+0.8.0
+==========
+
+* Added support for zero-down deployment (PR #104, issue #34)
+* Added call to "composer dump-autoload --no-dev --optimize" following DI compliation (issue #102)
+
 0.7.3
 ==========
 

lib/capistrano/magento2/version.rb

@@ -9,6 +9,6 @@
 
 module Capistrano
   module Magento2
-    VERSION = '0.7.3'
+    VERSION = '0.8.0'
   end
 end

lib/capistrano/tasks/deploy.rake

@@ -30,8 +30,10 @@ namespace :deploy do
       invoke 'magento:deploy:mode:production'
       invoke 'magento:setup:static-content:deploy'
       invoke 'magento:setup:di:compile'
+      invoke 'magento:composer:dump-autoload'
     end
     invoke 'magento:setup:permissions'
+    invoke 'magento:maintenance:check'
     invoke 'magento:maintenance:enable' if fetch(:magento_deploy_maintenance)
 
     on release_roles :all do
@@ -49,7 +51,9 @@ namespace :deploy do
     on primary fetch(:magento_deploy_setup_role) do
       within release_path do
         if test :magento, 'app:config:import --help >/dev/null 2>&1'
-          invoke 'magento:app:config:import'
+          if fetch(:magento_deploy_maintenance)
+            invoke 'magento:app:config:import'
+          end
         end
       end
     end

lib/capistrano/tasks/magento.rake

@@ -124,6 +124,22 @@ namespace :magento do
       end
     end
 
+    desc 'Run composer dump-autoload'
+    task 'dump-autoload' do
+
+      on release_roles :all do
+        within release_path do
+          composer_flags = '--no-dev --no-interaction'
+
+          if fetch(:magento_deploy_production)
+            composer_flags += ' --optimize'
+          end
+
+          execute :composer, "dump-autoload #{composer_flags} 2>&1"
+        end
+      end
+    end
+
     task :auth_config do
       on release_roles :all do
         within release_path do
@@ -382,7 +398,60 @@ namespace :magento do
         end
       end
     end
-    
+
+    # Internal command used to check if maintenance mode is neeeded and disable when zero-down deploy is possible
+    task :check do
+      on primary fetch(:magento_deploy_setup_role) do
+        within release_path do
+          # Do not disable maintenance mode by default; require a postive id on database status output
+          disable_maintenance = false
+
+          # The setup:db:status command is only available in Magento 2.2.2 and later
+          if not test :magento, 'setup:db:status --help >/dev/null 2>&1'
+            info "Magento CLI command setup:db:status is not available. Maintenance mode will be used by default."
+          else
+            info "Checking database status..."
+            # Check setup:db:status output and disable maintenance mode if all modules are up-to-date
+            database_status = capture :magento, 'setup:db:status' , raise_on_non_zero_exit: false
+
+            if database_status.to_s.include? 'All modules are up to date'
+              info "All modules are up to date. No database updates should occur during this release."
+              puts ""
+              disable_maintenance = true
+            else
+              puts "      #{database_status.gsub("\n", "\n      ").sub("Run 'setup:upgrade' to update your DB schema and data.", "")}"
+            end
+
+            # Gather md5sums of app/etc/config.php on current and new release
+            config_hash_release = capture :md5sum, "#{release_path}/app/etc/config.php"
+            if test "[ -f #{current_path}/app/etc/config.php ]"
+              config_hash_current = capture :md5sum, "#{current_path}/app/etc/config.php"
+            else
+              config_hash_current = ("%-34s" % "n/a") + "#{current_path}/app/etc/config.php"
+            end
+
+            # Output some informational messages showing the config.php hash values
+            info "<release_path>/app/etc/config.php hash: #{config_hash_release.split(" ")[0]}"
+            info "<current_path>/app/etc/config.php hash: #{config_hash_current.split(" ")[0]}"
+            info ""
+
+            # If hashes differ, maintenance mode should not be disabled even if there are no database changes.
+            if config_hash_release.split(" ")[0] != config_hash_current.split(" ")[0]
+              info "Configuration hashes do not match. Maintenance mode will be used by default."
+              disable_maintenance = false
+            end
+
+            if disable_maintenance
+              info "Disabling use of maintenance mode for a zero-down deployment."
+              set :magento_deploy_maintenance, false
+            else
+              info "Maintenance mode usage will be enforced per :magento_deploy_maintenance (enabled by default)"
+            end
+          end
+        end
+      end
+    end
+
     desc 'Disable maintenance mode'
     task :disable do
       on release_roles :all do