Line data    Source code

       1              : /*
       2              :  *
       3              :  *    Copyright (c) 2020-2021 Project CHIP Authors
       4              :  *    Copyright (c) 2019 Nest Labs, Inc.
       5              :  *
       6              :  *    Licensed under the Apache License, Version 2.0 (the "License");
       7              :  *    you may not use this file except in compliance with the License.
       8              :  *    You may obtain a copy of the License at
       9              :  *
      10              :  *        http://www.apache.org/licenses/LICENSE-2.0
      11              :  *
      12              :  *    Unless required by applicable law or agreed to in writing, software
      13              :  *    distributed under the License is distributed on an "AS IS" BASIS,
      14              :  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      15              :  *    See the License for the specific language governing permissions and
      16              :  *    limitations under the License.
      17              :  */
      18              : 
      19              : /**
      20              :  *    @file
      21              :  *          Provides an generic implementation of ConnectivityManager features
      22              :  *          for use on platforms that support Thread.
      23              :  */
      24              : 
      25              : #ifndef GENERIC_CONNECTIVITY_MANAGER_IMPL_THREAD_CPP
      26              : #define GENERIC_CONNECTIVITY_MANAGER_IMPL_THREAD_CPP
      27              : 
      28              : #include <lib/support/CodeUtils.h>
      29              : #include <platform/internal/CHIPDeviceLayerInternal.h>
      30              : #include <platform/internal/GenericConnectivityManagerImpl_Thread.h>
      31              : 
      32              : namespace chip {
      33              : namespace DeviceLayer {
      34              : namespace Internal {
      35              : 
      36              : template <class ImplClass>
      37           19 : void GenericConnectivityManagerImpl_Thread<ImplClass>::_OnPlatformEvent(const ChipDeviceEvent * event)
      38              : {
      39              :     // Define some short-hands for various interesting event conditions.
      40           19 :     const bool threadConnChanged = (event->Type == DeviceEventType::kThreadConnectivityChange &&
      41            0 :                                     event->ThreadConnectivityChange.Result != kConnectivity_NoChange);
      42           19 :     const bool threadAddrChanged = (event->Type == DeviceEventType::kThreadStateChange && event->ThreadStateChange.AddressChanged);
      43           19 :     const bool threadNetDataChanged =
      44           19 :         (event->Type == DeviceEventType::kThreadStateChange && event->ThreadStateChange.NetDataChanged);
      45              : 
      46           19 :     if (threadConnChanged && event->ThreadConnectivityChange.Result == kConnectivity_Established)
      47              :     {
      48            0 :         ThreadStackMgrImpl().OnThreadAttachFinished();
      49              :     }
      50              : 
      51              :     // If any of the above events has occurred, assess whether there's been a change in
      52              :     // service connectivity via Thread.
      53           19 :     if (threadConnChanged || threadAddrChanged || threadNetDataChanged)
      54              :     {
      55            0 :         UpdateServiceConnectivity();
      56              :     }
      57           19 : }
      58              : 
      59              : template <class ImplClass>
      60            0 : void GenericConnectivityManagerImpl_Thread<ImplClass>::UpdateServiceConnectivity()
      61              : {
      62            0 :     constexpr bool haveServiceConnectivity = false;
      63              : 
      64              :     // If service connectivity via Thread has changed, post an event signaling the change.
      65            0 :     if (mFlags.Has(Flags::kHaveServiceConnectivity) != haveServiceConnectivity)
      66              :     {
      67            0 :         ChipLogProgress(DeviceLayer, "ConnectivityManager: Service connectivity via Thread %s",
      68              :                         (haveServiceConnectivity) ? "ESTABLISHED" : "LOST");
      69              : 
      70            0 :         mFlags.Set(Flags::kHaveServiceConnectivity, haveServiceConnectivity);
      71              : 
      72              :         {
      73            0 :             ChipDeviceEvent event{ .Type                      = DeviceEventType::kServiceConnectivityChange,
      74              :                                    .ServiceConnectivityChange = { .ViaThread = { .Result = (haveServiceConnectivity)
      75              :                                                                                      ? kConnectivity_Established
      76              :                                                                                      : kConnectivity_Lost } } };
      77            0 :             event.ServiceConnectivityChange.Overall.Result = event.ServiceConnectivityChange.ViaThread.Result;
      78            0 :             CHIP_ERROR status                              = PlatformMgr().PostEvent(&event);
      79            0 :             if (status != CHIP_NO_ERROR)
      80              :             {
      81            0 :                 ChipLogError(DeviceLayer, "Failed to post thread connectivity change: %" CHIP_ERROR_FORMAT, status.Format());
      82              :             }
      83              :         }
      84              :     }
      85            0 : }
      86              : 
      87              : } // namespace Internal
      88              : } // namespace DeviceLayer
      89              : } // namespace chip
      90              : 
      91              : #endif // GENERIC_CONNECTIVITY_MANAGER_IMPL_THREAD_CPP