rwlaunchpad/plugins/rwpkgmgr/rift/tasklets/rwpkgmgr/rwpkgmgr.py

   1 """
   2 #
   3 #   Copyright 2016 RIFT.IO Inc
   4 #
   5 #   Licensed under the Apache License, Version 2.0 (the "License");
   6 #   you may not use this file except in compliance with the License.
   7 #   You may obtain a copy of the License at
   8 #
   9 #       http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 #   Unless required by applicable law or agreed to in writing, software
  12 #   distributed under the License is distributed on an "AS IS" BASIS,
  13 #   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 #   See the License for the specific language governing permissions and
  15 #   limitations under the License.
  16 #
  17
  18 @file rwpkgmgr.py
  19 @author Varun Prasad (varun.prasad@riftio.com)
  20 @date 18-Sep-2016
  21
  22 """
  23
  24 import asyncio
  25
  26 import gi
  27 gi.require_version('RwDts', '1.0')
  28 gi.require_version('RwPkgMgmtYang', '1.0')
  29
  30
  31 from gi.repository import (
  32         RwDts as rwdts,
  33         RwPkgMgmtYang)
  34 import rift.tasklets
  35
  36
  37 from . import rpc
  38 from .proxy import filesystem
  39 from . import publisher as pkg_publisher
  40
  41
  42 class PackageManagerTasklet(rift.tasklets.Tasklet):
  43     def __init__(self, *args, **kwargs):
  44         try:
  45             super().__init__(*args, **kwargs)
  46             self.rwlog.set_category("rw-mano-log")
  47             self.endpoint_rpc = None
  48             self.schema_rpc = None
  49         except Exception as e:
  50             self.log.exception(e)
  51
  52     def start(self):
  53         super().start()
  54
  55         self.log.debug("Registering with dts")
  56
  57         self.dts = rift.tasklets.DTS(
  58                 self.tasklet_info,
  59                 RwPkgMgmtYang.get_schema(),
  60                 self.loop,
  61                 self.on_dts_state_change
  62                 )
  63
  64         proxy = filesystem.FileSystemProxy(self.loop, self.log)
  65
  66         args = [self.log, self.dts, self.loop]
  67         self.job_handler = pkg_publisher.DownloadStatusPublisher(*args)
  68
  69         args.append(proxy)
  70         self.endpoint_rpc = rpc.EndpointDiscoveryRpcHandler(*args)
  71         self.schema_rpc = rpc.SchemaRpcHandler(*args)
  72         self.delete_rpc = rpc.PackageDeleteOperationsRpcHandler(*args)
  73
  74         args.append(self.job_handler)
  75         self.pkg_op = rpc.PackageOperationsRpcHandler(*args)
  76
  77     def stop(self):
  78         try:
  79             self.dts.deinit()
  80         except Exception as e:
  81             self.log.exception(e)
  82
  83     @asyncio.coroutine
  84     def init(self):
  85         yield from self.endpoint_rpc.register()
  86         yield from self.schema_rpc.register()
  87         yield from self.pkg_op.register()
  88         yield from self.job_handler.register()
  89         yield from self.delete_rpc.register()
  90
  91     @asyncio.coroutine
  92     def run(self):
  93         pass
  94
  95     @asyncio.coroutine
  96     def on_dts_state_change(self, state):
  97         """Handle DTS state change
  98
  99         Take action according to current DTS state to transition application
 100         into the corresponding application state
 101
 102         Arguments
 103             state - current dts state
 104
 105         """
 106         switch = {
 107             rwdts.State.INIT: rwdts.State.REGN_COMPLETE,
 108             rwdts.State.CONFIG: rwdts.State.RUN,
 109         }
 110
 111         handlers = {
 112             rwdts.State.INIT: self.init,
 113             rwdts.State.RUN: self.run,
 114         }
 115
 116         # Transition application to next state
 117         handler = handlers.get(state, None)
 118         if handler is not None:
 119             yield from handler()
 120
 121         # Transition dts to next state
 122         next_state = switch.get(state, None)
 123         if next_state is not None:
 124             self.dts.handle.set_state(next_state)