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 from rift.mano.utils.project import (
  36     ManoProject,
  37     ProjectHandler,
  38 )
  39
  40 from . import rpc
  41 from .proxy import filesystem
  42 from . import publisher as pkg_publisher
  43 from . import subscriber
  44
  45 class PackageManagerProject(ManoProject):
  46
  47     def __init__(self, name, tasklet, **kw):
  48         super(PackageManagerProject, self).__init__(tasklet.log, name)
  49         self.update(tasklet)
  50         proxy = kw["proxy"]
  51
  52         args = [self.log, self.dts, self.loop, self]
  53         self.job_handler = pkg_publisher.DownloadStatusPublisher(*args)
  54         self.copy_publisher = pkg_publisher.CopyStatusPublisher(*args + [self.tasklet.tasklet_info])
  55
  56         # create catalog subscribers
  57         self.vnfd_catalog_sub = subscriber.VnfdStatusSubscriber(*args)
  58         self.nsd_catalog_sub = subscriber.NsdStatusSubscriber(*args)
  59
  60         args.append(proxy)
  61         self.copy_rpc = rpc.PackageCopyOperationsRpcHandler(*(args + [self.copy_publisher]))
  62
  63     @asyncio.coroutine
  64     def register (self):
  65         yield from self.vnfd_catalog_sub.register()
  66         yield from self.nsd_catalog_sub.register()
  67         yield from self.copy_rpc.register()
  68         yield from self.copy_publisher.register()
  69         yield from self.job_handler.register()
  70
  71     def deregister (self):
  72         yield from self.job_handler.deregister()
  73         yield from self.copy_rpc.deregister()
  74         yield from self.copy_publisher.deregister()
  75         yield from self.vnfd_catalog_sub.deregister()
  76         yield from self.nsd_catalog_sub.deregister()
  77
  78
  79 class PackageManagerTasklet(rift.tasklets.Tasklet):
  80     def __init__(self, *args, **kwargs):
  81         try:
  82             super().__init__(*args, **kwargs)
  83             self.rwlog.set_category("rw-mano-log")
  84             self.endpoint_rpc = None
  85             self.schema_rpc = None
  86
  87             self._project_handler = None
  88             self.projects = {}
  89
  90         except Exception as e:
  91             self.log.exception(e)
  92
  93     def start(self):
  94
  95         self.log.debug("Registering with dts")
  96
  97         try:
  98             super().start()
  99             self.dts = rift.tasklets.DTS(
 100                 self.tasklet_info,
 101                 RwPkgMgmtYang.get_schema(),
 102                 self.loop,
 103                 self.on_dts_state_change
 104                 )
 105
 106             proxy = filesystem.FileSystemProxy(self.loop, self.log)
 107             args = [self.log, self.dts, self.loop]
 108
 109             args.append(proxy)
 110             self.endpoint_rpc = rpc.EndpointDiscoveryRpcHandler(*args)
 111             self.schema_rpc = rpc.SchemaRpcHandler(*args)
 112             self.delete_rpc = rpc.PackageDeleteOperationsRpcHandler(*args)
 113
 114             args.append(self)
 115             self.pkg_op = rpc.PackageOperationsRpcHandler(*args)
 116
 117             self.project_handler = ProjectHandler(self, PackageManagerProject,
 118                                                   proxy=proxy,)
 119         except Exception as e:
 120             self.log.exception("Exception caught rwpkgmgr start: %s", str(e))
 121         else:
 122             self.log.debug("rwpkgmgr started successfully!")
 123
 124     def stop(self):
 125         try:
 126             self.dts.deinit()
 127         except Exception as e:
 128             self.log.exception(e)
 129
 130     @asyncio.coroutine
 131     def init(self):
 132         yield from self.endpoint_rpc.register()
 133         yield from self.schema_rpc.register()
 134         yield from self.pkg_op.register()
 135         yield from self.delete_rpc.register()
 136
 137         self.log.debug("creating project handler")
 138         self.project_handler = ProjectHandler(self, PackageManagerProject)
 139         self.project_handler.register()
 140
 141     @asyncio.coroutine
 142     def run(self):
 143         pass
 144
 145     @asyncio.coroutine
 146     def on_dts_state_change(self, state):
 147         """Handle DTS state change
 148
 149         Take action according to current DTS state to transition application
 150         into the corresponding application state
 151
 152         Arguments
 153             state - current dts state
 154
 155         """
 156         switch = {
 157             rwdts.State.INIT: rwdts.State.REGN_COMPLETE,
 158             rwdts.State.CONFIG: rwdts.State.RUN,
 159         }
 160
 161         handlers = {
 162             rwdts.State.INIT: self.init,
 163             rwdts.State.RUN: self.run,
 164         }
 165
 166         # Transition application to next state
 167         handler = handlers.get(state, None)
 168         if handler is not None:
 169             yield from handler()
 170
 171         # Transition dts to next state
 172         next_state = switch.get(state, None)
 173         if next_state is not None:
 174             self.dts.handle.set_state(next_state)