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|
require 'active_support/core_ext/object/inclusion'
require 'active_record'
db_namespace = namespace :db do
task :load_config => :rails_env 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 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['charset'] || @charset), :collation => (config['collation'] || @collation)}
end
def create_database(config)
begin
if config['adapter'] =~ /sqlite/
ActiveRecord::Tasks::DatabaseTasks.create config
return # Skip the else clause of begin/rescue
else
ActiveRecord::Base.establish_connection(config)
ActiveRecord::Base.connection
end
rescue
case config['adapter']
when /mysql/
ActiveRecord::Tasks::DatabaseTasks.create config
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
$stderr.puts "#{config['database']} already exists"
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 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 || 'development']
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}")
db_list.map! { |version| "%.3d" % version }
file_list = []
ActiveRecord::Migrator.migrations_paths.each do |path|
Dir.foreach(path) do |file|
# match "20091231235959_some_name.rb" and "001_some_name.rb" pattern
if match_data = /^(\d{3,})_(.+)\.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 do
db_namespace["drop"].invoke
db_namespace["setup"].invoke
end
# desc "Retrieves the charset for the current environment's database"
task :charset => :environment do
config = ActiveRecord::Base.configurations[Rails.env || 'development']
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 do
config = ActiveRecord::Base.configurations[Rails.env || 'development']
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 do
puts "Current version: #{ActiveRecord::Migrator.current_version}"
end
# desc "Raises an error if there are pending migrations"
task :abort_if_pending_migrations => :environment 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 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 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 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 => 'db:create' do
db_namespace["schema:load"].invoke if ActiveRecord::Base.schema_format == :ruby
end
namespace :cache do
desc 'Create a db/schema_cache.dump file.'
task :dump => :environment do
con = ActiveRecord::Base.connection
filename = File.join(Rails.application.config.paths["db"].first, "schema_cache.dump")
con.schema_cache.clear!
con.tables.each { |table| con.schema_cache.add(table) }
open(filename, 'wb') { |f| f.write(Marshal.dump(con.schema_cache)) }
end
desc 'Clear a db/schema_cache.dump file.'
task :clear => :environment do
filename = File.join(Rails.application.config.paths["db"].first, "schema_cache.dump")
FileUtils.rm(filename) if File.exists?(filename)
end
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 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
File.open(filename, "a") { |f| f << "SET search_path TO #{ActiveRecord::Base.connection.schema_search_path};\n\n" }
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 => '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 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 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 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. 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 = {}
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
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