# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.

# coding=utf-8
from threading import Lock

REQUEST_ERROR = 203

REQUEST_TIMEOUT = 408

GRPC_CONNECT_ERROR = 'grpc_connect_error'


class ExceptionContext(object):

    def __init__(self):
        self._exception_mapping = {}
        self._lock = Lock()

    def get_exception(self):
        if self._exception_mapping:
            return self._exception_mapping[GRPC_CONNECT_ERROR]
        return None

    def set_exception(self, exception):
        with self._lock:
            if exception:
                self._exception_mapping[GRPC_CONNECT_ERROR] = exception
            else:
                self._exception_mapping = {}
