lib/groonga_client_model/railties/groonga.rake in groonga-client-model-1.0.0 vs lib/groonga_client_model/railties/groonga.rake in groonga-client-model-1.0.1

@@ -1,8 +1,8 @@
 # -*- ruby -*-
 #
-# Copyright (C) 2016  Kouhei Sutou <[e-mail]>
+# Copyright (C) 2016-2017  Kouhei Sutou <[e-mail]>
 #
 # This library is free software; you can redistribute it and/or
 # modify it under the terms of the GNU Lesser General Public
 # License as published by the Free Software Foundation; either
 # version 2.1 of the License, or (at your option) any later version.
@@ -14,22 +14,75 @@
 #
 # You should have received a copy of the GNU Lesser General Public
 # License along with this library; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 
+require "groonga_client_model/migrator"
+
 namespace :groonga do
   namespace :config do
     desc "Load config/groonga.rb"
     task load: [:environment] do
       config = Rails.application.config_for(:groonga)
       GroongaClientModel::Client.url = config["url"]
     end
   end
 
   namespace :schema do
-    desc "Loads db/schema.grn info Groonga"
+    desc "Loads db/schema.grn into the Groonga database"
     task load: ["config:load"] do
       schema_loader = GroongaClientModel::SchemaLoader.new(Rails.root)
       schema_loader.load
     end
+  end
+
+  namespace :migrate do
+    task setup: ["config:load"] do
+      Rails.application.paths["db/groonga/migrate"] ||=
+        GroongaClientModel::Migrator.default_search_path
+    end
+
+    desc "Rollbacks the Groonga database one version and re-migrates"
+    task redo: ["setup"] do
+      migration_paths = Rails.application.paths["db/groonga/migrate"].to_a
+      migrator = GroongaClientModel::Migrator.new(migration_paths)
+      current_version = migrator.current_version
+      if ENV["VERSION"]
+        migrator.target_version = Integer(ENV["VERSION"])
+        migrator.migrate
+        migrator.target_version = current_version
+        migrator.migrate
+      elsif current_version
+        if ENV["STEP"]
+          step = Integer(ENV["STEP"])
+        else
+          step = 1
+        end
+        migrator.step = -step
+        migrator.migrate
+        migrator.target_version = current_version
+        migrator.migrate
+      end
+    end
+
+    desc "Rolls the Groonga database back to the previous version"
+    task rollback: ["setup"] do
+      migration_paths = Rails.application.paths["db/groonga/migrate"].to_a
+      migrator = GroongaClientModel::Migrator.new(migration_paths)
+      if ENV["STEP"]
+        step = Integer(ENV["STEP"])
+      else
+        step = 1
+      end
+      migrator.step = -step
+      migrator.migrate
+    end
+  end
+
+  desc "Migrates the Groonga database"
+  task migrate: ["migrate:setup"] do
+    migration_paths = Rails.application.paths["db/groonga/migrate"].to_a
+    migrator = GroongaClientModel::Migrator.new(migration_paths)
+    migrator.target_version = Integer(ENV["VERSION"]) if ENV["VERSION"]
+    migrator.migrate
   end
 end