def _RaiseProxyError(error_msg=None):
message = '{}.'.format(_BASE_CLOUD_SQL_PROXY_ERROR)
if error_msg:
message = '{}: {}'.format(_BASE_CLOUD_SQL_PROXY_ERROR, error_msg)
raise sql_exceptions.CloudSqlProxyError(message)
def RunProxyConnectCommand(args, supports_database=False):
"""Connects to a Cloud SQL instance through the Cloud SQL Proxy.
Args:
args: argparse.Namespace, The arguments that this command was invoked with.
supports_database: Whether or not the `--database` flag needs to be
accounted for.
Returns:
If no exception is raised this method does not return. A new process is
started and the original one is killed.
Raises:
HttpException: An http error response was received while executing api
request.
CloudSqlProxyError: Cloud SQL Proxy could not be found.
SqlClientNotFoundError: A local SQL client could not be found.
ConnectionError: An error occurred while trying to connect to the instance.
"""
client = api_util.SqlClient(api_util.API_VERSION_DEFAULT)
sql_client = client.sql_client
sql_messages = client.sql_messages
instance_ref = instances_command_util.GetInstanceRef(args, client)
instance_info = sql_client.instances.Get(
sql_messages.SqlInstancesGetRequest(project=instance_ref.project,
instance=instance_ref.instance))
if not instances_api_util.IsInstanceV2(sql_messages, instance_info):
# The Cloud SQL Proxy does not support V1 instances.
return RunConnectCommand(args, supports_database)
# If the instance is V2, keep going with the proxy.
exe = files.FindExecutableOnPath('cloud_sql_proxy')
if not exe:
raise exceptions.CloudSqlProxyError(
'Cloud SQL Proxy could not be found in PATH. See '
'https://cloud.google.com/sql/docs/mysql/sql-proxy#install for '
'information on installing.')
# Check for the executable based on the db version.
db_type = instance_info.databaseVersion.name.split('_')[0]
exe_name = constants.DB_EXE.get(db_type, 'mysql')
exe = files.FindExecutableOnPath(exe_name)
if not exe:
raise exceptions.SqlClientNotFoundError(
'{0} client not found. Please install a {1} client and make sure '
'it is in PATH to be able to connect to the database instance.'.
format(exe_name.title(), exe_name))
# Start the Cloud SQL Proxy and wait for it to be ready to accept connections.
port = six.text_type(args.port)
proxy_process = instances_api_util.StartCloudSqlProxy(instance_info, port)
atexit.register(proxy_process.kill)
# Determine what SQL user to connect with.
sql_user = constants.DEFAULT_SQL_USER[exe_name]
if args.user:
sql_user = args.user
# We have everything we need, time to party!
flags = constants.EXE_FLAGS[exe_name]
sql_args = [exe_name]
if exe_name == 'mssql-cli':
# mssql-cli merges hostname and port into a single argument
hostname = 'tcp:127.0.0.1,{0}'.format(port)
sql_args.extend([flags['hostname'], hostname])
else:
sql_args.extend([flags['hostname'], '127.0.0.1', flags['port'], port])
sql_args.extend([flags['user'], sql_user])
if 'password' in flags:
sql_args.append(flags['password'])
if supports_database:
sql_args.extend(instances_command_util.GetDatabaseArgs(args, flags))
instances_command_util.ConnectToInstance(sql_args, sql_user)
proxy_process.kill()