| # |
| # Copyright (c) 2021 Project CHIP Authors |
| # |
| # 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. |
| # |
| |
| import ctypes |
| |
| import chip.native |
| from chip.logging.types import LogRedirectCallback_t |
| |
| |
| def _GetLoggingLibraryHandle() -> ctypes.CDLL: |
| """ Get the native library handle with logging method initialization. |
| |
| Retreives the CHIP native library handle and attaches signatures to |
| native methods. |
| """ |
| |
| # Getting a handle without requiring init, as logging methods |
| # do not require chip stack startup |
| handle = chip.native.GetLibraryHandle(chip.native.HandleFlags(0)) |
| |
| # Uses one of the type decorators as an indicator for everything being |
| # initialized. |
| if not handle.pychip_logging_set_callback.argtypes: |
| setter = chip.native.NativeLibraryHandleMethodArguments(handle) |
| |
| setter.Set('pychip_logging_set_callback', |
| ctypes.c_void_p, [LogRedirectCallback_t]) |
| |
| return handle |