Class: JustOneDB::Command::Heroku

Inherits:
Base
  • Object
show all
Defined in:
lib/justonedb/command/heroku/base.rb,
lib/justonedb/command/heroku/migrate.rb,
lib/justonedb/command/heroku/promote.rb,
lib/justonedb/command/heroku/purge-old.rb,
lib/justonedb/command/heroku/make-default.rb,
lib/justonedb/command/heroku/reset-default.rb

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Base

commands, load, platforms

Class Method Details

.get_commands ⇒ Object 



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# File 'lib/justonedb/command/heroku/base.rb', line 14

def get_commands
	[
		{
			:cmd_class => self,
			:method => self.instance_method(:migrate),
			:platform => "heroku",
			:command => "migrate",
			:summary => "Migrate Data from current to 'NEW' database",
			:options => [
							{
								:option_id => "directory",
								:short => '-d',
								:long => '--directory TMP_DIR',
								:description => 'Write temporary data to TMP_DIR (default ".")'
							}
						],
		},
		{
			:cmd_class => self,
			:method => self.instance_method(:promote),
			:platform => "heroku",
			:command => "promote",
			:summary => "Promote JustOneDB 'NEW' database to live",
			:options => NIL
		},
		{
			:cmd_class => self,
			:method => self.instance_method(:purge_old),
			:platform => "heroku",
			:command => "purge-old",
			:summary => "Purge 'OLD' JustOneDB variables",
			:options => NIL
		},
		{
			:cmd_class => self,
			:method => self.instance_method(:make_justone_default_database),
			:platform => "heroku",
			:command => "make-default",
			:summary => "Make JustOneDB the default Heroku database",
			:options => NIL
		},
		{
			:cmd_class => self,
			:method => self.instance_method(:reset_default_database),
			:platform => "heroku",
			:command => "reset-default",
			:summary => "Reset the default Heroku database using DATABASE_URL_DEFAULT",
			:options => NIL
		},
	]
end

Instance Method Details

#make_justone_default_database(args, options) ⇒ Object

Make JustOneDB the default Rails database in heroku, by assigning JUSTONEDB_DBI_URL to DATABASE_URL

Raises:



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# File 'lib/justonedb/command/heroku/make-default.rb', line 9

def make_justone_default_database(args, options)
	herokuapi = ::Heroku::Command::BaseWithApp.new(args, options)

	vars = herokuapi.heroku.config_vars(herokuapi.app)

	raise InvalidAppConfig, "JUSTONEDB_DBI_URL undefined" unless vars["JUSTONEDB_DBI_URL"]

	if vars["DATABASE_URL"] && vars["DATABASE_URL"] == vars["JUSTONEDB_DBI_URL"]
		raise InvalidAppConfig, "DATABASE_URL is already using the JustOne database"
	end

	puts "Making JUSTONEDB_DBI_URL the default Rails database"

	detected_app = herokuapi.app

	if vars["DATABASE_URL"]
		# Save the old one ...
		herokuapi.heroku.add_config_vars(detected_app, { "JUSTONEDB_SAVED_DATABASE_URL" => vars["DATABASE_URL"] })
	end

	herokuapi.heroku.add_config_vars(detected_app, { "DATABASE_URL" => vars["JUSTONEDB_DBI_URL"] })

	puts "DATABASE_URL now points directly to the JustOneDB database; application restarting"
end

#migrate(args, options) ⇒ Object

Migrate JustOne database data from JUSTONEDB_DBI_URL to JUSTONEDB_NEW_DBI_URL

Raises:



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# File 'lib/justonedb/command/heroku/migrate.rb', line 11

def migrate(args, options)
	# Migrate data from JUSTONEDB_DBI_URL to JUSTONEDB_NEW_DBI_URL
	# -d, --directory # Specify temporary dump directory
	directory = options[:directory]
	directory = Dir::tmpdir unless directory

	herokuapi = ::Heroku::Command::BaseWithApp.new(args, options)

	vars = herokuapi.heroku.config_vars(herokuapi.app)

	# Check that we have an old and a new DBI entry
	raise InvalidAppConfig, "JUSTONEDB_DBI_URL undefined" unless vars["JUSTONEDB_DBI_URL"]
	raise InvalidAppConfig, "JUSTONEDB_NEW_DBI_URL undefined" unless vars["JUSTONEDB_NEW_DBI_URL"]

	super(vars["JUSTONEDB_DBI_URL"], vars["JUSTONEDB_NEW_DBI_URL"], directory)
end

#promote(args, options) ⇒ Object

Promote ‘NEW’ JustOne database to current

Raises:



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# File 'lib/justonedb/command/heroku/promote.rb', line 10

def promote(args, options)
	herokuapi = ::Heroku::Command::BaseWithApp.new(args, options)

	vars = herokuapi.heroku.config_vars(herokuapi.app)

	# Check that we have an old and a new DBI entry
	raise InvalidAppConfig, "JUSTONEDB_NEW_DBI_URL undefined" unless vars["JUSTONEDB_NEW_DBI_URL"]
	raise InvalidAppConfig, "JUSTONEDB_NEW_REST_BASE undefined" unless vars["JUSTONEDB_NEW_REST_BASE"]
	raise InvalidAppConfig, "JUSTONEDB_NEW_REST_DB undefined" unless vars["JUSTONEDB_NEW_REST_DB"]
	raise InvalidAppConfig, "JUSTONEDB_NEW_SUPPORT_ID undefined" unless vars["JUSTONEDB_NEW_SUPPORT_ID"]

	puts "Promoting JustOneDB 'NEW' vars to current, and saving current to 'OLD'"

	detected_app = herokuapi.app

	new_vars = {}
	new_vars["JUSTONEDB_OLD_DBI_URL"] = vars["JUSTONEDB_DBI_URL"]
	new_vars["JUSTONEDB_OLD_REST_BASE"] = vars["JUSTONEDB_REST_BASE"]
	new_vars["JUSTONEDB_OLD_REST_DB"] = vars["JUSTONEDB_REST_DB"]
	new_vars["JUSTONEDB_OLD_SUPPORT_ID"] = vars["JUSTONEDB_SUPPORT_ID"]
	new_vars["JUSTONEDB_DBI_URL"] = vars["JUSTONEDB_NEW_DBI_URL"]
	new_vars["JUSTONEDB_REST_BASE"] = vars["JUSTONEDB_NEW_REST_BASE"]
	new_vars["JUSTONEDB_REST_DB"] = vars["JUSTONEDB_NEW_REST_DB"]
	new_vars["JUSTONEDB_SUPPORT_ID"] = vars["JUSTONEDB_NEW_SUPPORT_ID"]

	herokuapi.heroku.add_config_vars(detected_app, new_vars)

	herokuapi.heroku.remove_config_var(detected_app, "JUSTONEDB_NEW_DBI_URL")
	herokuapi.heroku.remove_config_var(detected_app, "JUSTONEDB_NEW_REST_BASE")
	herokuapi.heroku.remove_config_var(detected_app, "JUSTONEDB_NEW_REST_DB")
	herokuapi.heroku.remove_config_var(detected_app, "JUSTONEDB_NEW_SUPPORT_ID")

	puts "Variables modified, please check that your application works correctly, before running 'justonedb heroku purge-old'"
end

#purge_old(args, options) ⇒ Object

Purge ‘OLD’ JustOneDB environment variables

Raises:



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# File 'lib/justonedb/command/heroku/purge-old.rb', line 10

def purge_old(args, options)
	herokuapi = ::Heroku::Command::BaseWithApp.new(args, options)

	vars = herokuapi.heroku.config_vars(herokuapi.app)

	# Check that we have the old entries
	raise InvalidAppConfig, "JUSTONEDB_OLD_DBI_URL undefined" unless vars["JUSTONEDB_OLD_DBI_URL"]
	raise InvalidAppConfig, "JUSTONEDB_OLD_REST_BASE undefined" unless vars["JUSTONEDB_OLD_REST_BASE"]
	raise InvalidAppConfig, "JUSTONEDB_OLD_REST_DB undefined" unless vars["JUSTONEDB_OLD_REST_DB"]
	raise InvalidAppConfig, "JUSTONEDB_OLD_SUPPORT_ID undefined" unless vars["JUSTONEDB_OLD_SUPPORT_ID"]

	puts "Purging JustOneDB 'OLD' configuration variables"

	detected_app = herokuapi.app

	herokuapi.heroku.remove_config_var(detected_app, "JUSTONEDB_OLD_DBI_URL")
	herokuapi.heroku.remove_config_var(detected_app, "JUSTONEDB_OLD_REST_BASE")
	herokuapi.heroku.remove_config_var(detected_app, "JUSTONEDB_OLD_REST_DB")
	herokuapi.heroku.remove_config_var(detected_app, "JUSTONEDB_OLD_SUPPORT_ID")
end

#reset_default_database(args, options) ⇒ Object

Set DATABASE_URL back to JUSTONEDB_SAVED_DATABASE_URL

Raises:



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# File 'lib/justonedb/command/heroku/reset-default.rb', line 9

def reset_default_database(args, options)
	herokuapi = ::Heroku::Command::BaseWithApp.new(args, options)

	vars = herokuapi.heroku.config_vars(herokuapi.app)

	raise InvalidAppConfig, "JUSTONEDB_SAVED_DATABASE_URL undefined" unless vars["JUSTONEDB_SAVED_DATABASE_URL"]

	puts "Resetting DATABASE_URL from JUSTONEDB_SAVED_DATABASE_URL"

	detected_app = herokuapi.app

	herokuapi.heroku.add_config_vars(detected_app, { "DATABASE_URL" => vars["JUSTONEDB_SAVED_DATABASE_URL"] })

	puts "DATABASE_URL has now been reset; application restarting"
end