def run_migrations_offline():
"""Run migrations in 'offline' mode.
This configures the context with just a URL
and not an Engine, though an Engine is acceptable
here as well. By skipping the Engine creation
we don't even need a DBAPI to be available.
Calls to context.execute() here emit the given string to the
script output.
"""
project_path = get_project_path()
project_config = get_project_config(project_path)
backend = get_backend(project_path, project_config, initialize_db=False)
url = str(backend.engine.url)
with backend.transaction():
context.configure(connection=backend.connection,
url=url,
target_metadata=backend.metadata,
literal_binds=True)
with context.begin_transaction():
context.run_migrations()
def main():
load_plugins()
project_path = get_project_path()
settings = Settings()
settings.update(settings.load(project_path=project_path))
settings.load_plugins()
if project_path:
project_config = get_project_config(project_path)
backend = get_backend(project_path, project_config, settings)
project = get_project(project_path, project_config, settings, backend)
else:
project = None
backend = None
CommandClass, command_chain = load_command_class(settings)
if CommandClass.requires_valid_project and project is None:
sys.stderr.write(
"Cannot find a checkmate project in the current directory tree, aborting.\n"
)
exit(-1)
command = CommandClass(project,
settings,
backend=backend,
prog=sys.argv[0] + " " + " ".join(command_chain),
args=sys.argv[1 + len(command_chain):])
try:
if 'help' in command.opts and command.opts['help']:
print command.help_message()
exit(0)
result = command.run()
if hasattr(command, 'serialize'):
result_str = command.serialize(result, 'text')
print result_str
except KeyboardInterrupt:
print "[CTRL-C pressed, aborting]"
exit(-1)
def run_migrations_online():
"""Run migrations in 'online' mode.
In this scenario we need to create an Engine
and associate a connection with the context.
"""
print "Running migrations online"
project_path = get_project_path()
project_config = get_project_config(project_path)
backend = get_backend(project_path, project_config, initialize_db=False)
context.configure(
connection=backend.connection,
target_metadata=backend.metadata,
)
with context.begin_transaction():
context.run_migrations()