Merge pull request #1666 from zzet/feature/postgres

Postgresql

.travis.yml

 env:
+  - DB=postgresql
   - DB=mysql
 before_install:
   - sudo apt-get install libicu-dev -y
@@ -11,6 +12,7 @@ rvm:
   - 1.9.3
 services:
   - mysql
+  - postgresql
 before_script:
   - "cp config/database.yml.$DB config/database.yml"
   - "cp config/gitlab.yml.example config/gitlab.yml"

Gemfile

@@ -11,8 +11,9 @@ end
 gem "rails", "3.2.8"
 
 # Supported DBs
-gem "sqlite3"
-gem "mysql2"
+gem "sqlite3", :group => :sqlite
+gem "mysql2", :group => :mysql
+gem "pg", :group => :postgres
 
 # Auth
 gem "devise", "~> 2.1.0"

Gemfile.lock

@@ -245,6 +245,7 @@ GEM
       multi_json (~> 1.3)
       omniauth-oauth (~> 1.0)
     orm_adapter (0.3.0)
+    pg (0.14.0)
     polyglot (0.3.3)
     posix-spawn (0.3.6)
     pry (0.9.9.6)
@@ -441,6 +442,7 @@ DEPENDENCIES
   omniauth-google-oauth2
   omniauth-ldap!
   omniauth-twitter
+  pg
   pry
   pygments.rb (= 0.3.1)
   rack-mini-profiler

config/database.yml.postgresql

+#
+# PRODUCTION
+#
+production:
+  adapter: postgresql
+  encoding: unicode
+  database: gitlabhq_production
+  pool: 5
+  username: postgres
+  password:
+  # host: localhost
+  # socket: /tmp/postgresql.sock
+
+#
+# Development specific
+#
+development:
+  adapter: postgresql
+  encoding: unicode
+  database: gitlabhq_development
+  pool: 5
+  username: postgres
+  password:
+  # socket: /tmp/postgresql.sock
+
+#
+# Staging specific
+#
+staging:
+  adapter: postgresql
+  encoding: unicode
+  database: gitlabhq_staging
+  pool: 5
+  username: postgres
+  password:
+  # socket: /tmp/postgresql.sock
+
+# Warning: The database defined as "test" will be erased and
+# re-generated from your development database when you run "rake".
+# Do not set this db to the same as development or production.
+test: &test
+  adapter: postgresql
+  encoding: unicode
+  database: gitlabhq_test
+  pool: 5
+  username: postgres
+  password:
+  # socket: /tmp/postgresql.sock

config/initializers/postgresql_limit_fix.rb

+if defined?(ActiveRecord::ConnectionAdapters::PostgreSQLAdapter)
+  class ActiveRecord::ConnectionAdapters::PostgreSQLAdapter
+    class TableDefinition
+      def text(*args)
+        options = args.extract_options!
+        options.delete(:limit)
+        column_names = args
+        type = :text
+        column_names.each { |name| column(name, type, options) }
+      end
+    end
+
+    def add_column_with_limit_filter(table_name, column_name, type, options = {})
+      options.delete(:limit) if type == :text
+      add_column_without_limit_filter(table_name, column_name, type, options)
+    end
+
+    def change_column_with_limit_filter(table_name, column_name, type, options = {})
+      options.delete(:limit) if type == :text
+      change_column_without_limit_filter(table_name, column_name, type, options)
+    end
+
+    alias_method_chain :add_column, :limit_filter
+    alias_method_chain :change_column, :limit_filter
+  end
+end

db/migrate/20121009205010_postgres_create_integer_cast.rb

+class PostgresCreateIntegerCast < ActiveRecord::Migration
+  def up
+    execute <<-SQL
+      CREATE CAST (integer AS text) WITH INOUT AS IMPLICIT;
+    SQL
+    rescue ActiveRecord::StatementInvalid
+  end
+
+  def down
+    execute <<-SQL
+      DROP CAST (integer AS text);
+    SQL
+    rescue ActiveRecord::StatementInvalid
+  end
+end

doc/installation.md

@@ -75,6 +75,9 @@ Now install the required packages:
     # If you want to use MySQL:
     sudo apt-get install -y mysql-server mysql-client libmysqlclient-dev
 
+    # If you want to use PostgreSQL:
+    sudo apt-get install -y postgresql-9.2 postgresql-server-dev-9.2
+
 # 2. Install Ruby
 
     wget http://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.3-p194.tar.gz
@@ -188,9 +191,45 @@ and ensure you have followed all of the above steps carefully.
     # Exit MySQL Server and copy the example config, make sure to update username/password in config/database.yml
     sudo -u gitlab cp config/database.yml.example config/database.yml
 
+    # Or
+    # PostgreSQL
+    # Install PostgreSQL as directed in Step #1
+
+    # Connect to database server
+    sudo -u postgres psql -d template1
+
+    # Add a user called gitlab. Change $password to a real password
+    template1=# CREATE USER gitlab WITH PASSWORD '$password';
+
+    # Create the GitLab production database
+    template1=# CREATE DATABASE IF NOT EXISTS gitlabhq_production;
+
+    # Grant all privileges on database
+    template1=# GRANT ALL PRIVILEGES ON DATABASE gitlabhq_production to gitlab;
+
+    # Quit from PostgreSQL server
+    template1=# \q
+
+    # Try connect to new database
+    $ su - gitlab
+    $ psql -d gitlabhq_production -U gitlab
+
+    # Exit PostgreSQL Server and copy the example config, make sure to update username/password in config/database.yml
+    sudo -u gitlab cp config/database.yml.postgres config/database.yml
+
+    # If you need create development, test, staging or another database
+    # Repeate some steps with actual commands
+
 #### Install gems
 
-    sudo -u gitlab -H bundle install --without development test --deployment
+    # Please, check Gemfile before run bundle install
+    # Select database gem, wich you will use
+    # or run to setup gems with mysql usage
+    sudo -u gitlab -H bundle install --without development test sqlite postgres  --deployment
+    # or postgres
+    sudo -u gitlab -H bundle install --without development test sqlite mysql --deployment
+    # or sqlite
+    sudo -u gitlab -H bundle install --without development test mysql postgres  --deployment
 
 #### Setup database