X-Git-Url: https://gerrit.akraino.org/r/gitweb?p=ta%2Fdistributed-state-server.git;a=blobdiff_plain;f=src%2Fdss%2Fserver%2Fdss_shutdown_handler.py;fp=src%2Fdss%2Fserver%2Fdss_shutdown_handler.py;h=55d0eb6c20d6cf4e995698d97fe2d2622c6e0d19;hp=0000000000000000000000000000000000000000;hb=bd5a0a173f1ae9c64782fbf47565cc26ed23b448;hpb=03589032bfdfba119409e7c1c5bfa82ca52f53f7

diff --git a/src/dss/server/dss_shutdown_handler.py b/src/dss/server/dss_shutdown_handler.py
new file mode 100644
index 0000000..55d0eb6
--- /dev/null
+++ b/src/dss/server/dss_shutdown_handler.py
@@ -0,0 +1,41 @@
+# Copyright 2019 Nokia
+#
+# Licensed 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.
+#
+
+import signal
+import logging
+from dss.api import dss_error
+
+class ShutdownHandlerBase(object):
+    def __init__(self):
+        pass
+
+    def shutdown(self):
+        raise dss_error.Error('Not implemented')
+
+class ShutdownHandler(object):
+    def __init__(self):
+        signal.signal(signal.SIGINT, self.stop)
+        signal.signal(signal.SIGTERM, self.stop)
+        self.handlers = []
+
+    def add_handler(self, handler):
+        logging.info("Added handler %r" % handler)
+        self.handlers.append(handler)
+
+    def stop(self, signum, frame):
+        for handler in self.handlers:
+            logging.info("Calling shutdown on %r" % handler)
+            handler.shutdown()
+            logging.info("shutdown of %r returned" % handler)