policy-handler seed code

Change-Id: I35cd80b6e082f4b84740bab752774e8abc40ca35
Issue-Id: DCAEGEN2-46
Signed-off-by: Alex Shatov <alexs@att.com>

1 files changed, 104 insertions, 0 deletions

diff --git a/policyhandler/web_server.py b/policyhandler/web_server.py
new file mode 100644
index 0000000..9a5ee19
--- /dev/null
+++ b/policyhandler/web_server.py
@@ -0,0 +1,104 @@
+"""web-service for policy_handler"""
+
+# org.onap.dcae
+# ================================================================================
+# Copyright (c) 2017 AT&T Intellectual Property. All rights reserved.
+# ================================================================================
+# 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.
+# ============LICENSE_END=========================================================
+#
+# ECOMP is a trademark and service mark of AT&T Intellectual Property.
+
+import logging
+import json
+from datetime import datetime
+import cherrypy
+
+from .config import Config
+from .onap.audit import Audit
+from .policy_rest import PolicyRest
+from .policy_engine import PolicyEngineClient
+
+class PolicyWeb(object):
+    """Main static class for REST API of policy-handler"""
+    logger = logging.getLogger("policy_handler.web_cherrypy")
+
+    @staticmethod
+    def run():
+        """run forever the web-server of the policy-handler"""
+        PolicyWeb.logger.info("policy_handler web-service at port(%d)...", \
+            Config.wservice_port)
+        cherrypy.config.update({"server.socket_host": "0.0.0.0", \
+            'server.socket_port': Config.wservice_port})
+        cherrypy.tree.mount(PolicyLatest(), '/policy_latest')
+        cherrypy.tree.mount(PoliciesLatest(), '/policies_latest')
+        cherrypy.tree.mount(PoliciesCatchUp(), '/catch_up')
+        cherrypy.quickstart(Shutdown(), '/shutdown')
+
+class Shutdown(object):
+    """Shutdown the policy-handler"""
+    @cherrypy.expose
+    def index(self):
+        """shutdown event"""
+        audit = Audit(req_message="get /shutdown", headers=cherrypy.request.headers)
+        PolicyWeb.logger.info("--------- stopping REST API of policy-handler -----------")
+        cherrypy.engine.exit()
+        PolicyEngineClient.shutdown(audit)
+        PolicyWeb.logger.info("--------- the end -----------")
+        res = str(datetime.now())
+        audit.info_requested(res)
+        return "goodbye! shutdown requested {0}".format(res)
+
+class PoliciesLatest(object):
+    """REST API of the policy-hanlder"""
+
+    @cherrypy.expose
+    @cherrypy.tools.json_out()
+    def index(self):
+        """find the latest policy by policy_id or all latest policies"""
+        audit = Audit(req_message="get /policies_latest", headers=cherrypy.request.headers)
+        res = PolicyRest.get_latest_policies(audit) or {}
+        PolicyWeb.logger.info("PoliciesLatest: %s", json.dumps(res))
+        audit.audit_done(result=json.dumps(res))
+        return res
+
+@cherrypy.popargs('policy_id')
+class PolicyLatest(object):
+    """REST API of the policy-hanlder"""
+
+    @cherrypy.expose
+    @cherrypy.tools.json_out()
+    def index(self, policy_id):
+        """find the latest policy by policy_id or all latest policies"""
+        audit = Audit(req_message="get /policy_latest/{0}".format(policy_id or ""), \
+            headers=cherrypy.request.headers)
+        PolicyWeb.logger.info("PolicyLatest policy_id=%s headers=%s", \
+            policy_id, json.dumps(cherrypy.request.headers))
+        res = PolicyRest.get_latest_policy((audit, policy_id)) or {}
+        PolicyWeb.logger.info("PolicyLatest policy_id=%s res=%s", policy_id, json.dumps(res))
+        audit.audit_done(result=json.dumps(res))
+        return res
+
+class PoliciesCatchUp(object):
+    """catch up with all DCAE policies"""
+    @cherrypy.expose
+    @cherrypy.tools.json_out()
+    def index(self):
+        """catch up with all policies"""
+        started = str(datetime.now())
+        audit = Audit(req_message="get /catch_up", headers=cherrypy.request.headers)
+        PolicyEngineClient.catch_up(audit)
+        res = {"catch-up requested": started}
+        PolicyWeb.logger.info("PoliciesCatchUp: %s", json.dumps(res))
+        audit.info_requested(started)
+        return res