Skip to content
This repository
tree: f568280ba4
Fetching contributors…

Cannot retrieve contributors at this time

file 624 lines (557 sloc) 25.668 kb
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624
require 'active_support/core_ext/object/inclusion'
require 'active_record'

db_namespace = namespace :db do
  task :load_config do
    ActiveRecord::Base.configurations = Rails.application.config.database_configuration
    ActiveRecord::Migrator.migrations_paths = Rails.application.paths['db/migrate'].to_a

    if defined?(ENGINE_PATH) && engine = Rails::Engine.find(ENGINE_PATH)
      if engine.paths['db/migrate'].existent
        ActiveRecord::Migrator.migrations_paths += engine.paths['db/migrate'].to_a
      end
    end
  end

  namespace :create do
    # desc 'Create all the local databases defined in config/database.yml'
    task :all => :load_config do
      ActiveRecord::Base.configurations.each_value do |config|
        # Skip entries that don't have a database key, such as the first entry here:
        #
        # defaults: &defaults
        # adapter: mysql
        # username: root
        # password:
        # host: localhost
        #
        # development:
        # database: blog_development
        # *defaults
        next unless config['database']
        # Only connect to local databases
        local_database?(config) { create_database(config) }
      end
    end
  end

  desc 'Create the database from config/database.yml for the current Rails.env (use db:create:all to create all dbs in the config)'
  task :create => [:load_config, :rails_env] do
    configs_for_environment.each { |config| create_database(config) }
    ActiveRecord::Base.establish_connection(configs_for_environment.first)
  end

  def mysql_creation_options(config)
    @charset = ENV['CHARSET'] || 'utf8'
    @collation = ENV['COLLATION'] || 'utf8_unicode_ci'
    {:charset => (config['encoding'] || @charset), :collation => (config['collation'] || @collation)}
  end

  def create_database(config)
    begin
      if config['adapter'] =~ /sqlite/
        if File.exist?(config['database'])
          $stderr.puts "#{config['database']} already exists"
        else
          begin
            # Create the SQLite database
            ActiveRecord::Base.establish_connection(config)
            ActiveRecord::Base.connection
          rescue Exception => e
            $stderr.puts e, *(e.backtrace)
            $stderr.puts "Couldn't create database for #{config.inspect}"
          end
        end
        return # Skip the else clause of begin/rescue
      else
        ActiveRecord::Base.establish_connection(config)
        ActiveRecord::Base.connection
      end
    rescue
      case config['adapter']
      when /mysql/
        if config['adapter'] =~ /jdbc/
          #FIXME After Jdbcmysql gives this class
          require 'active_record/railties/jdbcmysql_error'
          error_class = ArJdbcMySQL::Error
        else
          error_class = config['adapter'] =~ /mysql2/ ? Mysql2::Error : Mysql::Error
        end
        access_denied_error = 1045
        begin
          ActiveRecord::Base.establish_connection(config.merge('database' => nil))
          ActiveRecord::Base.connection.create_database(config['database'], mysql_creation_options(config))
          ActiveRecord::Base.establish_connection(config)
        rescue error_class => sqlerr
          if sqlerr.errno == access_denied_error
            print "#{sqlerr.error}. \nPlease provide the root password for your mysql installation\n>"
            root_password = $stdin.gets.strip
            grant_statement = "GRANT ALL PRIVILEGES ON #{config['database']}.* " \
              "TO '#{config['username']}'@'localhost' " \
              "IDENTIFIED BY '#{config['password']}' WITH GRANT OPTION;"
            ActiveRecord::Base.establish_connection(config.merge(
                'database' => nil, 'username' => 'root', 'password' => root_password))
            ActiveRecord::Base.connection.create_database(config['database'], mysql_creation_options(config))
            ActiveRecord::Base.connection.execute grant_statement
            ActiveRecord::Base.establish_connection(config)
          else
            $stderr.puts sqlerr.error
            $stderr.puts "Couldn't create database for #{config.inspect}, charset: #{config['encoding'] || @charset}, collation: #{config['collation'] || @collation}"
            $stderr.puts "(if you set the charset manually, make sure you have a matching collation)" if config['encoding']
          end
        end
      when /postgresql/
        @encoding = config['encoding'] || ENV['CHARSET'] || 'utf8'
        begin
          ActiveRecord::Base.establish_connection(config.merge('database' => 'postgres', 'schema_search_path' => 'public'))
          ActiveRecord::Base.connection.create_database(config['database'], config.merge('encoding' => @encoding))
          ActiveRecord::Base.establish_connection(config)
        rescue Exception => e
          $stderr.puts e, *(e.backtrace)
          $stderr.puts "Couldn't create database for #{config.inspect}"
        end
      end
    else
      # Bug with 1.9.2 Calling return within begin still executes else
      $stderr.puts "#{config['database']} already exists" unless config['adapter'] =~ /sqlite/
    end
  end

  namespace :drop do
    # desc 'Drops all the local databases defined in config/database.yml'
    task :all => :load_config do
      ActiveRecord::Base.configurations.each_value do |config|
        # Skip entries that don't have a database key
        next unless config['database']
        begin
          # Only connect to local databases
          local_database?(config) { drop_database(config) }
        rescue Exception => e
          $stderr.puts "Couldn't drop #{config['database']} : #{e.inspect}"
        end
      end
    end
  end

  desc 'Drops the database for the current Rails.env (use db:drop:all to drop all databases)'
  task :drop => [:load_config, :rails_env] do
    configs_for_environment.each { |config| drop_database_and_rescue(config) }
  end

  def local_database?(config, &block)
    if config['host'].in?(['127.0.0.1', 'localhost']) || config['host'].blank?
      yield
    else
      $stderr.puts "This task only modifies local databases. #{config['database']} is on a remote host."
    end
  end


  desc "Migrate the database (options: VERSION=x, VERBOSE=false)."
  task :migrate => [:environment, :load_config] do
    ActiveRecord::Migration.verbose = ENV["VERBOSE"] ? ENV["VERBOSE"] == "true" : true
    ActiveRecord::Migrator.migrate(ActiveRecord::Migrator.migrations_paths, ENV["VERSION"] ? ENV["VERSION"].to_i : nil) do |migration|
      ENV["SCOPE"].blank? || (ENV["SCOPE"] == migration.scope)
    end
    db_namespace['_dump'].invoke
  end

  task :_dump do
    case ActiveRecord::Base.schema_format
    when :ruby then db_namespace["schema:dump"].invoke
    when :sql then db_namespace["structure:dump"].invoke
    else
      raise "unknown schema format #{ActiveRecord::Base.schema_format}"
    end
    # Allow this task to be called as many times as required. An example is the
    # migrate:redo task, which calls other two internally that depend on this one.
    db_namespace['_dump'].reenable
  end

  namespace :migrate do
    # desc 'Rollbacks the database one migration and re migrate up (options: STEP=x, VERSION=x).'
    task :redo => [:environment, :load_config] do
      if ENV['VERSION']
        db_namespace['migrate:down'].invoke
        db_namespace['migrate:up'].invoke
      else
        db_namespace['rollback'].invoke
        db_namespace['migrate'].invoke
      end
    end

    # desc 'Resets your database using your migrations for the current environment'
    task :reset => ['db:drop', 'db:create', 'db:migrate']

    # desc 'Runs the "up" for a given migration VERSION.'
    task :up => [:environment, :load_config] do
      version = ENV['VERSION'] ? ENV['VERSION'].to_i : nil
      raise 'VERSION is required' unless version
      ActiveRecord::Migrator.run(:up, ActiveRecord::Migrator.migrations_paths, version)
      db_namespace['_dump'].invoke
    end

    # desc 'Runs the "down" for a given migration VERSION.'
    task :down => [:environment, :load_config] do
      version = ENV['VERSION'] ? ENV['VERSION'].to_i : nil
      raise 'VERSION is required' unless version
      ActiveRecord::Migrator.run(:down, ActiveRecord::Migrator.migrations_paths, version)
      db_namespace['_dump'].invoke
    end

    desc 'Display status of migrations'
    task :status => [:environment, :load_config] do
      config = ActiveRecord::Base.configurations[Rails.env]
      ActiveRecord::Base.establish_connection(config)
      unless ActiveRecord::Base.connection.table_exists?(ActiveRecord::Migrator.schema_migrations_table_name)
        puts 'Schema migrations table does not exist yet.'
        next # means "return" for rake task
      end
      db_list = ActiveRecord::Base.connection.select_values("SELECT version FROM #{ActiveRecord::Migrator.schema_migrations_table_name}")
      file_list = []
      ActiveRecord::Migrator.migrations_paths.each do |path|
        Dir.foreach(path) do |file|
          # only files matching "20091231235959_some_name.rb" pattern
          if match_data = /^(\d{14})_(.+)\.rb$/.match(file)
            status = db_list.delete(match_data[1]) ? 'up' : 'down'
            file_list << [status, match_data[1], match_data[2].humanize]
          end
        end
      end
      db_list.map! do |version|
        ['up', version, '********** NO FILE **********']
      end
      # output
      puts "\ndatabase: #{config['database']}\n\n"
      puts "#{'Status'.center(8)} #{'Migration ID'.ljust(14)} Migration Name"
      puts "-" * 50
      (db_list + file_list).sort_by {|migration| migration[1]}.each do |migration|
        puts "#{migration[0].center(8)} #{migration[1].ljust(14)} #{migration[2]}"
      end
      puts
    end
  end

  desc 'Rolls the schema back to the previous version (specify steps w/ STEP=n).'
  task :rollback => [:environment, :load_config] do
    step = ENV['STEP'] ? ENV['STEP'].to_i : 1
    ActiveRecord::Migrator.rollback(ActiveRecord::Migrator.migrations_paths, step)
    db_namespace['_dump'].invoke
  end

  # desc 'Pushes the schema to the next version (specify steps w/ STEP=n).'
  task :forward => [:environment, :load_config] do
    step = ENV['STEP'] ? ENV['STEP'].to_i : 1
    ActiveRecord::Migrator.forward(ActiveRecord::Migrator.migrations_paths, step)
    db_namespace['_dump'].invoke
  end

  # desc 'Drops and recreates the database from db/schema.rb for the current environment and loads the seeds.'
  task :reset => [:environment, :load_config] do
    db_namespace["drop"].invoke
    db_namespace["setup"].invoke
  end

  # desc "Retrieves the charset for the current environment's database"
  task :charset => [:environment, :load_config] do
    config = ActiveRecord::Base.configurations[Rails.env]
    case config['adapter']
    when /mysql/
      ActiveRecord::Base.establish_connection(config)
      puts ActiveRecord::Base.connection.charset
    when /postgresql/
      ActiveRecord::Base.establish_connection(config)
      puts ActiveRecord::Base.connection.encoding
    when /sqlite/
      ActiveRecord::Base.establish_connection(config)
      puts ActiveRecord::Base.connection.encoding
    else
      $stderr.puts 'sorry, your database adapter is not supported yet, feel free to submit a patch'
    end
  end

  # desc "Retrieves the collation for the current environment's database"
  task :collation => [:environment, :load_config] do
    config = ActiveRecord::Base.configurations[Rails.env]
    case config['adapter']
    when /mysql/
      ActiveRecord::Base.establish_connection(config)
      puts ActiveRecord::Base.connection.collation
    else
      $stderr.puts 'sorry, your database adapter is not supported yet, feel free to submit a patch'
    end
  end

  desc 'Retrieves the current schema version number'
  task :version => [:environment, :load_config] do
    puts "Current version: #{ActiveRecord::Migrator.current_version}"
  end

  # desc "Raises an error if there are pending migrations"
  task :abort_if_pending_migrations => [:environment, :load_config] do
    pending_migrations = ActiveRecord::Migrator.new(:up, ActiveRecord::Migrator.migrations_paths).pending_migrations

    if pending_migrations.any?
      puts "You have #{pending_migrations.size} pending migrations:"
      pending_migrations.each do |pending_migration|
        puts ' %4d %s' % [pending_migration.version, pending_migration.name]
      end
      abort %{Run `rake db:migrate` to update your database then try again.}
    end
  end

  desc 'Create the database, load the schema, and initialize with the seed data (use db:reset to also drop the db first)'
  task :setup => ['db:schema:load_if_ruby', 'db:structure:load_if_sql', :seed]

  desc 'Load the seed data from db/seeds.rb'
  task :seed do
    db_namespace['abort_if_pending_migrations'].invoke
    Rails.application.load_seed
  end

  namespace :fixtures do
    desc "Load fixtures into the current environment's database. Load specific fixtures using FIXTURES=x,y. Load from subdirectory in test/fixtures using FIXTURES_DIR=z. Specify an alternative path (eg. spec/fixtures) using FIXTURES_PATH=spec/fixtures."
    task :load => [:environment, :load_config] do
      require 'active_record/fixtures'

      ActiveRecord::Base.establish_connection(Rails.env)
      base_dir = File.join [Rails.root, ENV['FIXTURES_PATH'] || %w{test fixtures}].flatten
      fixtures_dir = File.join [base_dir, ENV['FIXTURES_DIR']].compact

      (ENV['FIXTURES'] ? ENV['FIXTURES'].split(/,/) : Dir["#{fixtures_dir}/**/*.{yml,csv}"].map {|f| f[(fixtures_dir.size + 1)..-5] }).each do |fixture_file|
        ActiveRecord::Fixtures.create_fixtures(fixtures_dir, fixture_file)
      end
    end

    # desc "Search for a fixture given a LABEL or ID. Specify an alternative path (eg. spec/fixtures) using FIXTURES_PATH=spec/fixtures."
    task :identify => [:environment, :load_config] do
      require 'active_record/fixtures'

      label, id = ENV['LABEL'], ENV['ID']
      raise 'LABEL or ID required' if label.blank? && id.blank?

      puts %Q(The fixture ID for "#{label}" is #{ActiveRecord::Fixtures.identify(label)}.) if label

      base_dir = ENV['FIXTURES_PATH'] ? File.join(Rails.root, ENV['FIXTURES_PATH']) : File.join(Rails.root, 'test', 'fixtures')
      Dir["#{base_dir}/**/*.yml"].each do |file|
        if data = YAML::load(ERB.new(IO.read(file)).result)
          data.keys.each do |key|
            key_id = ActiveRecord::Fixtures.identify(key)

            if key == label || key_id == id.to_i
              puts "#{file}: #{key} (#{key_id})"
            end
          end
        end
      end
    end
  end

  namespace :schema do
    desc 'Create a db/schema.rb file that can be portably used against any DB supported by AR'
    task :dump => [:environment, :load_config] do
      require 'active_record/schema_dumper'
      filename = ENV['SCHEMA'] || "#{Rails.root}/db/schema.rb"
      File.open(filename, "w:utf-8") do |file|
        ActiveRecord::Base.establish_connection(Rails.env)
        ActiveRecord::SchemaDumper.dump(ActiveRecord::Base.connection, file)
      end
      db_namespace['schema:dump'].reenable
    end

    desc 'Load a schema.rb file into the database'
    task :load => [:environment, :load_config] do
      file = ENV['SCHEMA'] || "#{Rails.root}/db/schema.rb"
      if File.exists?(file)
        load(file)
      else
        abort %{#{file} doesn't exist yet. Run `rake db:migrate` to create it then try again. If you do not intend to use a database, you should instead alter #{Rails.root}/config/application.rb to limit the frameworks that will be loaded}
      end
    end

    task :load_if_ruby => [:environment, 'db:create'] do
      db_namespace["schema:load"].invoke if ActiveRecord::Base.schema_format == :ruby
    end
  end

  namespace :structure do
    desc 'Dump the database structure to db/structure.sql. Specify another file with DB_STRUCTURE=db/my_structure.sql'
    task :dump => [:environment, :load_config] do
      abcs = ActiveRecord::Base.configurations
      filename = ENV['DB_STRUCTURE'] || File.join(Rails.root, "db", "structure.sql")
      case abcs[Rails.env]['adapter']
      when /mysql/, 'oci', 'oracle'
        ActiveRecord::Base.establish_connection(abcs[Rails.env])
        File.open(filename, "w:utf-8") { |f| f << ActiveRecord::Base.connection.structure_dump }
      when /postgresql/
        set_psql_env(abcs[Rails.env])
        search_path = abcs[Rails.env]['schema_search_path']
        unless search_path.blank?
          search_path = search_path.split(",").map{|search_path_part| "--schema=#{Shellwords.escape(search_path_part.strip)}" }.join(" ")
        end
        `pg_dump -i -s -x -O -f #{Shellwords.escape(filename)} #{search_path} #{Shellwords.escape(abcs[Rails.env]['database'])}`
        raise 'Error dumping database' if $?.exitstatus == 1
      when /sqlite/
        dbfile = abcs[Rails.env]['database']
        `sqlite3 #{dbfile} .schema > #{filename}`
      when 'sqlserver'
        `smoscript -s #{abcs[Rails.env]['host']} -d #{abcs[Rails.env]['database']} -u #{abcs[Rails.env]['username']} -p #{abcs[Rails.env]['password']} -f #{filename} -A -U`
      when "firebird"
        set_firebird_env(abcs[Rails.env])
        db_string = firebird_db_string(abcs[Rails.env])
        sh "isql -a #{db_string} > #{filename}"
      else
        raise "Task not supported by '#{abcs[Rails.env]["adapter"]}'"
      end

      if ActiveRecord::Base.connection.supports_migrations?
        File.open(filename, "a") { |f| f << ActiveRecord::Base.connection.dump_schema_information }
      end
      db_namespace['structure:dump'].reenable
    end

    # desc "Recreate the databases from the structure.sql file"
    task :load => [:environment, :load_config] do
      env = ENV['RAILS_ENV'] || 'test'

      abcs = ActiveRecord::Base.configurations
      filename = ENV['DB_STRUCTURE'] || File.join(Rails.root, "db", "structure.sql")
      case abcs[env]['adapter']
      when /mysql/
        ActiveRecord::Base.establish_connection(abcs[env])
        ActiveRecord::Base.connection.execute('SET foreign_key_checks = 0')
        IO.read(filename).split("\n\n").each do |table|
          ActiveRecord::Base.connection.execute(table)
        end
      when /postgresql/
        set_psql_env(abcs[env])
        `psql -f "#{filename}" #{abcs[env]['database']}`
      when /sqlite/
        dbfile = abcs[env]['database']
        `sqlite3 #{dbfile} < "#{filename}"`
      when 'sqlserver'
        `sqlcmd -S #{abcs[env]['host']} -d #{abcs[env]['database']} -U #{abcs[env]['username']} -P #{abcs[env]['password']} -i #{filename}`
      when 'oci', 'oracle'
        ActiveRecord::Base.establish_connection(abcs[env])
        IO.read(filename).split(";\n\n").each do |ddl|
          ActiveRecord::Base.connection.execute(ddl)
        end
      when 'firebird'
        set_firebird_env(abcs[env])
        db_string = firebird_db_string(abcs[env])
        sh "isql -i #{filename} #{db_string}"
      else
        raise "Task not supported by '#{abcs[env]['adapter']}'"
      end
    end

    task :load_if_sql => [:environment, 'db:create'] do
      db_namespace["structure:load"].invoke if ActiveRecord::Base.schema_format == :sql
    end
  end

  namespace :test do

    # desc "Recreate the test database from the current schema"
    task :load => 'db:test:purge' do
      case ActiveRecord::Base.schema_format
        when :ruby
          db_namespace["test:load_schema"].invoke
        when :sql
          db_namespace["test:load_structure"].invoke
      end
    end

    # desc "Recreate the test database from an existent structure.sql file"
    task :load_structure => 'db:test:purge' do
      begin
        old_env, ENV['RAILS_ENV'] = ENV['RAILS_ENV'], 'test'
        db_namespace["structure:load"].invoke
      ensure
        ENV['RAILS_ENV'] = old_env
      end
    end

    # desc "Recreate the test database from an existent schema.rb file"
    task :load_schema => 'db:test:purge' do
      ActiveRecord::Base.establish_connection(ActiveRecord::Base.configurations['test'])
      ActiveRecord::Schema.verbose = false
      db_namespace["schema:load"].invoke
    end

    # desc "Recreate the test database from a fresh schema.rb file"
    task :clone => %w(db:schema:dump db:test:load_schema)

    # desc "Recreate the test database from a fresh structure.sql file"
    task :clone_structure => [ "db:structure:dump", "db:test:load_structure" ]

    # desc "Empty the test database"
    task :purge => [:environment, :load_config] do
      abcs = ActiveRecord::Base.configurations
      case abcs['test']['adapter']
      when /mysql/
        ActiveRecord::Base.establish_connection(:test)
        ActiveRecord::Base.connection.recreate_database(abcs['test']['database'], mysql_creation_options(abcs['test']))
      when /postgresql/
        ActiveRecord::Base.clear_active_connections!
        drop_database(abcs['test'])
        create_database(abcs['test'])
      when /sqlite/
        dbfile = abcs['test']['database']
        File.delete(dbfile) if File.exist?(dbfile)
      when 'sqlserver'
        test = abcs.deep_dup['test']
        test_database = test['database']
        test['database'] = 'master'
        ActiveRecord::Base.establish_connection(test)
        ActiveRecord::Base.connection.recreate_database!(test_database)
      when "oci", "oracle"
        ActiveRecord::Base.establish_connection(:test)
        ActiveRecord::Base.connection.structure_drop.split(";\n\n").each do |ddl|
          ActiveRecord::Base.connection.execute(ddl)
        end
      when 'firebird'
        ActiveRecord::Base.establish_connection(:test)
        ActiveRecord::Base.connection.recreate_database!
      else
        raise "Task not supported by '#{abcs['test']['adapter']}'"
      end
    end

    # desc 'Check for pending migrations and load the test schema'
    task :prepare => 'db:abort_if_pending_migrations' do
      unless ActiveRecord::Base.configurations.blank?
        db_namespace[{ :sql => 'test:clone_structure', :ruby => 'test:load' }[ActiveRecord::Base.schema_format]].invoke
      end
    end
  end

  namespace :sessions do
    # desc "Creates a sessions migration for use with ActiveRecord::SessionStore"
    task :create => [:environment, :load_config] do
      raise 'Task unavailable to this database (no migration support)' unless ActiveRecord::Base.connection.supports_migrations?
      Rails.application.load_generators
      require 'rails/generators/rails/session_migration/session_migration_generator'
      Rails::Generators::SessionMigrationGenerator.start [ ENV['MIGRATION'] || 'add_sessions_table' ]
    end

    # desc "Clear the sessions table"
    task :clear => [:environment, :load_config] do
      ActiveRecord::Base.connection.execute "DELETE FROM #{session_table_name}"
    end
  end
end

namespace :railties do
  namespace :install do
    # desc "Copies missing migrations from Railties (e.g. plugins, engines). You can specify Railties to use with FROM=railtie1,railtie2"
    task :migrations => :'db:load_config' do
      to_load = ENV['FROM'].blank? ? :all : ENV['FROM'].split(",").map {|n| n.strip }
      railties = ActiveSupport::OrderedHash.new
      Rails.application.railties.all do |railtie|
        next unless to_load == :all || to_load.include?(railtie.railtie_name)

        if railtie.respond_to?(:paths) && (path = railtie.paths['db/migrate'].first)
          railties[railtie.railtie_name] = path
        end
      end

      on_skip = Proc.new do |name, migration|
        puts "NOTE: Migration #{migration.basename} from #{name} has been skipped. Migration with the same name already exists."
      end

      on_copy = Proc.new do |name, migration, old_path|
        puts "Copied migration #{migration.basename} from #{name}"
      end

      ActiveRecord::Migration.copy(ActiveRecord::Migrator.migrations_paths.first, railties,
                                    :on_skip => on_skip, :on_copy => on_copy)
    end
  end
end

task 'test:prepare' => 'db:test:prepare'

def drop_database(config)
  case config['adapter']
  when /mysql/
    ActiveRecord::Base.establish_connection(config)
    ActiveRecord::Base.connection.drop_database config['database']
  when /sqlite/
    require 'pathname'
    path = Pathname.new(config['database'])
    file = path.absolute? ? path.to_s : File.join(Rails.root, path)

    FileUtils.rm(file)
  when /postgresql/
    ActiveRecord::Base.establish_connection(config.merge('database' => 'postgres', 'schema_search_path' => 'public'))
    ActiveRecord::Base.connection.drop_database config['database']
  end
end

def drop_database_and_rescue(config)
  begin
    drop_database(config)
  rescue Exception => e
    $stderr.puts "Couldn't drop #{config['database']} : #{e.inspect}"
  end
end

def configs_for_environment
  environments = [Rails.env]
  environments << 'test' if Rails.env.development?
  ActiveRecord::Base.configurations.values_at(*environments).compact.reject { |config| config['database'].blank? }
end

def session_table_name
  ActiveRecord::SessionStore::Session.table_name
end

def set_firebird_env(config)
  ENV['ISC_USER'] = config['username'].to_s if config['username']
  ENV['ISC_PASSWORD'] = config['password'].to_s if config['password']
end

def firebird_db_string(config)
  FireRuby::Database.db_string_for(config.symbolize_keys)
end

def set_psql_env(config)
  ENV['PGHOST'] = config['host'] if config['host']
  ENV['PGPORT'] = config['port'].to_s if config['port']
  ENV['PGPASSWORD'] = config['password'].to_s if config['password']
  ENV['PGUSER'] = config['username'].to_s if config['username']
end
Something went wrong with that request. Please try again.