141 - Support for Package Management in SO

[osm/SO.git] / rwlaunchpad / plugins / rwpkgmgr / rift / tasklets / rwpkgmgr / rwpkgmgr.py

diff --git a/rwlaunchpad/plugins/rwpkgmgr/rift/tasklets/rwpkgmgr/rwpkgmgr.py b/rwlaunchpad/plugins/rwpkgmgr/rift/tasklets/rwpkgmgr/rwpkgmgr.py
new file mode 100644 (file)
index 0000000..d4e5736
--- /dev/null
+++ b/rwlaunchpad/plugins/rwpkgmgr/rift/tasklets/rwpkgmgr/rwpkgmgr.py
@@ -0,0 +1,124 @@
+"""
+# 
+#   Copyright 2016 RIFT.IO Inc
+#
+#   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.
+#
+
+@file rwpkgmgr.py
+@author Varun Prasad (varun.prasad@riftio.com)
+@date 18-Sep-2016
+
+"""
+
+import asyncio
+
+import gi
+gi.require_version('RwDts', '1.0')
+gi.require_version('RwPkgMgmtYang', '1.0')
+
+
+from gi.repository import (
+        RwDts as rwdts,
+        RwPkgMgmtYang)
+import rift.tasklets
+
+
+from . import rpc
+from .proxy import filesystem
+from . import publisher as pkg_publisher
+
+
+class PackageManagerTasklet(rift.tasklets.Tasklet):
+    def __init__(self, *args, **kwargs):
+        try:
+            super().__init__(*args, **kwargs)
+            self.rwlog.set_category("rw-mano-log")
+            self.endpoint_rpc = None
+            self.schema_rpc = None
+        except Exception as e:
+            self.log.exception(e)
+
+    def start(self):
+        super().start()
+
+        self.log.debug("Registering with dts")
+
+        self.dts = rift.tasklets.DTS(
+                self.tasklet_info,
+                RwPkgMgmtYang.get_schema(),
+                self.loop,
+                self.on_dts_state_change
+                )
+
+        proxy = filesystem.FileSystemProxy(self.loop, self.log)
+
+        args = [self.log, self.dts, self.loop]
+        self.job_handler = pkg_publisher.DownloadStatusPublisher(*args)
+
+        args.append(proxy)
+        self.endpoint_rpc = rpc.EndpointDiscoveryRpcHandler(*args)
+        self.schema_rpc = rpc.SchemaRpcHandler(*args)
+        self.delete_rpc = rpc.PackageDeleteOperationsRpcHandler(*args)
+
+        args.append(self.job_handler)
+        self.pkg_op = rpc.PackageOperationsRpcHandler(*args)
+
+    def stop(self):
+        try:
+            self.dts.deinit()
+        except Exception as e:
+            self.log.exception(e)
+
+    @asyncio.coroutine
+    def init(self):
+        yield from self.endpoint_rpc.register()
+        yield from self.schema_rpc.register()
+        yield from self.pkg_op.register()
+        yield from self.job_handler.register()
+        yield from self.delete_rpc.register()
+
+    @asyncio.coroutine
+    def run(self):
+        pass
+
+    @asyncio.coroutine
+    def on_dts_state_change(self, state):
+        """Handle DTS state change
+
+        Take action according to current DTS state to transition application
+        into the corresponding application state
+
+        Arguments
+            state - current dts state
+
+        """
+        switch = {
+            rwdts.State.INIT: rwdts.State.REGN_COMPLETE,
+            rwdts.State.CONFIG: rwdts.State.RUN,
+        }
+
+        handlers = {
+            rwdts.State.INIT: self.init,
+            rwdts.State.RUN: self.run,
+        }
+
+        # Transition application to next state
+        handler = handlers.get(state, None)
+        if handler is not None:
+            yield from handler()
+
+        # Transition dts to next state
+        next_state = switch.get(state, None)
+        if next_state is not None:
+            self.dts.handle.set_state(next_state)