[Python] Cleanup PyChipError return values

Use PyChipError return value where PyChipErrors are actually returned.
This then also allows us to use the typical .raise_on_error() pattern.

Author: agners

src/controller/python/chip/ChipDeviceCtrl.py

@@ -1013,12 +1013,8 @@ def GetRemoteSessionParameters(self, nodeid) -> typing.Optional[SessionParameter
         sessionParametersStruct = SessionParametersStruct.parse(b'\x00' * SessionParametersStruct.sizeof())
         sessionParametersByteArray = SessionParametersStruct.build(sessionParametersStruct)
         device = self.GetConnectedDeviceSync(nodeid)
-        res = self._ChipStack.Call(lambda: self._dmLib.pychip_DeviceProxy_GetRemoteSessionParameters(
-            device.deviceProxy, ctypes.c_char_p(sessionParametersByteArray)))
-
-        # 0 is CHIP_NO_ERROR
-        if res != 0:
-            return None
+        self._ChipStack.Call(lambda: self._dmLib.pychip_DeviceProxy_GetRemoteSessionParameters(
+            device.deviceProxy, ctypes.c_char_p(sessionParametersByteArray))).raise_on_error()
 
         sessionParametersStruct = SessionParametersStruct.parse(sessionParametersByteArray)
         return SessionParameters(
@@ -1804,6 +1800,9 @@ def _InitLib(self):
 
             self._dmLib.pychip_CheckInDelegate_SetOnCheckInCompleteCallback(_OnCheckInComplete)
 
+            self._dmLib.pychip_DeviceProxy_GetRemoteSessionParameters.restype = PyChipError
+            self._dmLib.pychip_DeviceProxy_GetRemoteSessionParameters.argtypes = [c_void_p, c_char_p]
+
 
 class ChipDeviceController(ChipDeviceControllerBase):
     ''' The ChipDeviceCommissioner binding, named as ChipDeviceController

src/controller/python/chip/discovery/__init__.py

@@ -236,8 +236,7 @@ def FindAddressAsync(fabricid: int, nodeid: int, callback, timeout_ms=1000):
     )
 
     res = _GetDiscoveryLibraryHandle().pychip_discovery_resolve(fabricid, nodeid)
-    if res != 0:
-        raise Exception("Failed to start node resolution")
+    res.raise_on_error()
 
 
 class _SyncAddressFinder:

src/controller/python/chip/interaction_model/delegate.py

@@ -330,7 +330,7 @@ def InitIMDelegate():
         setter.Set("pychip_InteractionModelDelegate_SetCommandResponseErrorCallback", None, [
                    _OnCommandResponseFunct])
         setter.Set("pychip_InteractionModel_GetCommandSenderHandle",
-                   c_uint32, [ctypes.POINTER(c_uint64)])
+                   chip.native.PyChipError, [ctypes.POINTER(c_uint64)])
         setter.Set("pychip_InteractionModelDelegate_SetOnWriteResponseStatusCallback", None, [
                    _OnWriteResponseStatusFunct])
 
@@ -389,10 +389,8 @@ def WaitCommandIndexStatus(commandHandle: int, commandIndex: int):
 def GetCommandSenderHandle() -> int:
     handle = chip.native.GetLibraryHandle()
     resPointer = c_uint64()
-    res = handle.pychip_InteractionModel_GetCommandSenderHandle(
-        ctypes.pointer(resPointer))
-    if res != 0:
-        raise chip.exceptions.ChipStackError(res)
+    handle.pychip_InteractionModel_GetCommandSenderHandle(
+        ctypes.pointer(resPointer)).raise_on_error()
     ClearCommandStatus(resPointer.value)
     return resPointer.value
 

src/controller/python/chip/native/__init__.py

@@ -199,7 +199,7 @@ def __init__(self, handle):
     def Set(self, methodName: str, resultType, argumentTypes: list):
         method = getattr(self.handle, methodName)
         method.restype = resultType
-        method.argtype = argumentTypes
+        method.argtypes = argumentTypes
 
 
 @dataclass

src/controller/python/chip/setup_payload/setup_payload.py

@@ -18,7 +18,7 @@
 from typing import Optional
 
 from chip.exceptions import ChipStackError
-from chip.native import GetLibraryHandle, NativeLibraryHandleMethodArguments
+from chip.native import GetLibraryHandle, NativeLibraryHandleMethodArguments, PyChipError
 
 
 class SetupPayload:
@@ -46,34 +46,23 @@ def AddVendorAttribute(tag, value):
 
     def ParseQrCode(self, qrCode: str):
         self.Clear()
-        err = self.chipLib.pychip_SetupPayload_ParseQrCode(qrCode.upper().encode(),
+        self.chipLib.pychip_SetupPayload_ParseQrCode(qrCode.upper().encode(),
                                                            self.attribute_visitor,
-                                                           self.vendor_attribute_visitor)
-
-        if err != 0:
-            raise ChipStackError(err)
-
-        return self
+                                                           self.vendor_attribute_visitor).raise_on_error()
 
     def ParseManualPairingCode(self, manualPairingCode: str):
         self.Clear()
-        err = self.chipLib.pychip_SetupPayload_ParseManualPairingCode(manualPairingCode.encode(),
+        self.chipLib.pychip_SetupPayload_ParseManualPairingCode(manualPairingCode.encode(),
                                                                       self.attribute_visitor,
-                                                                      self.vendor_attribute_visitor)
-
-        if err != 0:
-            raise ChipStackError(err)
+                                                                      self.vendor_attribute_visitor).raise_on_error()
 
         return self
 
     # DEPRECATED
     def PrintOnboardingCodes(self, passcode, vendorId, productId, discriminator, customFlow, capabilities, version):
         self.Clear()
-        err = self.chipLib.pychip_SetupPayload_PrintOnboardingCodes(
-            passcode, vendorId, productId, discriminator, customFlow, capabilities, version)
-
-        if err != 0:
-            raise ChipStackError(err)
+        self.chipLib.pychip_SetupPayload_PrintOnboardingCodes(
+            passcode, vendorId, productId, discriminator, customFlow, capabilities, version).raise_on_error()
 
     # DEPRECATED
     def Print(self):
@@ -106,17 +95,17 @@ def __DecorateValue(self, name, value):
         return None
 
     def __InitNativeFunctions(self, chipLib):
-        if chipLib.pychip_SetupPayload_ParseQrCode is not None:
+        if chipLib.pychip_SetupPayload_ParseQrCode.argtypes is not None:
             return
         setter = NativeLibraryHandleMethodArguments(chipLib)
         setter.Set("pychip_SetupPayload_ParseQrCode",
-                   c_int32,
+                   PyChipError,
                    [c_char_p, SetupPayload.AttributeVisitor, SetupPayload.VendorAttributeVisitor])
         setter.Set("pychip_SetupPayload_ParseManualPairingCode",
-                   c_int32,
+                   PyChipError,
                    [c_char_p, SetupPayload.AttributeVisitor, SetupPayload.VendorAttributeVisitor])
         setter.Set("pychip_SetupPayload_PrintOnboardingCodes",
-                   c_int32,
+                   PyChipError,
                    [c_uint32, c_uint16, c_uint16, c_uint16, c_uint8, c_uint8, c_uint8])
 
     # Getters from parsed contents.