3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at
7 # http://www.apache.org/licenses/LICENSE-2.0
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 # See the License for the specific language governing permissions and
13 # limitations under the License.
18 from dss.api import dss_error
20 class ShutdownHandlerBase(object):
25 raise dss_error.Error('Not implemented')
27 class ShutdownHandler(object):
29 signal.signal(signal.SIGINT, self.stop)
30 signal.signal(signal.SIGTERM, self.stop)
33 def add_handler(self, handler):
34 logging.info("Added handler %r" % handler)
35 self.handlers.append(handler)
37 def stop(self, signum, frame):
38 for handler in self.handlers:
39 logging.info("Calling shutdown on %r" % handler)
41 logging.info("shutdown of %r returned" % handler)