Extract mixin from PV and EV component managers

src/frequenz/sdk/microgrid/_power_distributing/_component_managers/_ev_charger_manager/_ev_charger_manager.py

@@ -17,7 +17,6 @@
     selected_from,
 )
 from frequenz.client.common.microgrid.components import ComponentId
-from frequenz.client.microgrid import ApiClientError, MicrogridApiClient
 from frequenz.client.microgrid.component import EvCharger
 from frequenz.quantities import Power, Voltage
 from typing_extensions import override
@@ -30,15 +29,16 @@
 from ..._component_pool_status_tracker import ComponentPoolStatusTracker
 from ..._component_status import ComponentPoolStatus, EVChargerStatusTracker
 from ...request import Request
-from ...result import PartialFailure, Result, Success
+from ...result import Result
 from .._component_manager import ComponentManager
+from .._set_power_mixin import SetPowerMixin
 from ._config import EVDistributionConfig
 from ._states import EvcState, EvcStates
 
 _logger = logging.getLogger(__name__)
 
 
-class EVChargerManager(ComponentManager):
+class EVChargerManager(SetPowerMixin, ComponentManager):
     """Manage ev chargers for the power distributor."""
 
     @override
@@ -284,84 +284,14 @@ async def _run(self) -> None:  # pylint: disable=too-many-locals
 
             latest_target_powers.update(target_power_changes)
             result = await self._set_api_power(
-                api, target_power_changes, self._api_power_request_timeout
-            )
-            await self._results_sender.send(result)
-
-    async def _set_api_power(
-        self,
-        api: MicrogridApiClient,
-        target_power_changes: dict[ComponentId, Power],
-        api_request_timeout: timedelta,
-    ) -> Result:
-        """Send the EV charger power changes to the microgrid API.
-
-        Args:
-            api: The microgrid API client to use for setting the power.
-            target_power_changes: A dictionary containing the new power allocations for
-                the EV chargers.
-            api_request_timeout: The timeout for the API request.
-
-        Returns:
-            Power distribution result, corresponding to the result of the API
-                request.
-        """
-        tasks: dict[ComponentId, asyncio.Task[datetime | None]] = {}
-        for component_id, power in target_power_changes.items():
-            tasks[component_id] = asyncio.create_task(
-                api.set_component_power_active(component_id, power.as_watts())
-            )
-        _, pending = await asyncio.wait(
-            tasks.values(),
-            timeout=api_request_timeout.total_seconds(),
-            return_when=asyncio.ALL_COMPLETED,
-        )
-        for task in pending:
-            task.cancel()
-        await asyncio.gather(*pending, return_exceptions=True)
-
-        failed_components: set[ComponentId] = set()
-        succeeded_components: set[ComponentId] = set()
-        failed_power = Power.zero()
-        for component_id, task in tasks.items():
-            try:
-                task.result()
-            except asyncio.CancelledError:
-                _logger.warning(
-                    "Timeout while setting power to EV charger %s", component_id
-                )
-            except ApiClientError as exc:
-                _logger.warning(
-                    "Got a client error while setting power to EV charger %s: %s",
-                    component_id,
-                    exc,
-                )
-            except Exception:  # pylint: disable=broad-except
-                _logger.exception(
-                    "Unknown error while setting power to EV charger: %s", component_id
-                )
-            else:
-                succeeded_components.add(component_id)
-                continue
-
-            failed_components.add(component_id)
-            failed_power += target_power_changes[component_id]
-
-        if failed_components:
-            return PartialFailure(
-                failed_components=failed_components,
-                succeeded_components=succeeded_components,
-                failed_power=failed_power,
-                succeeded_power=self._target_power - failed_power,
-                excess_power=Power.zero(),
                 request=self._latest_request,
+                target_power=self._target_power,
+                allocations=target_power_changes,
+                api_request_timeout=self._api_power_request_timeout,
+                remaining_power=Power.zero(),
+                component_category="EV charger",
             )
-        return Success(
-            succeeded_components=succeeded_components,
-            succeeded_power=self._target_power,
-            excess_power=Power.zero(),
-            request=self._latest_request,
-        )
+            await self._results_sender.send(result)
 
     def _deallocate_unused_power(
         self, to_deallocate: Power

src/frequenz/sdk/microgrid/_power_distributing/_component_managers/_pv_inverter_manager/_pv_inverter_manager.py

@@ -6,11 +6,10 @@
 import asyncio
 import collections.abc
 import logging
-from datetime import datetime, timedelta
+from datetime import timedelta
 
 from frequenz.channels import LatestValueCache, Sender
 from frequenz.client.common.microgrid.components import ComponentId
-from frequenz.client.microgrid import ApiClientError
 from frequenz.client.microgrid.component import SolarInverter
 from frequenz.quantities import Power
 from typing_extensions import override
@@ -21,13 +20,14 @@
 from ..._component_pool_status_tracker import ComponentPoolStatusTracker
 from ..._component_status import ComponentPoolStatus, PVInverterStatusTracker
 from ...request import Request
-from ...result import PartialFailure, Result, Success
+from ...result import Result, Success
 from .._component_manager import ComponentManager
+from .._set_power_mixin import SetPowerMixin
 
 _logger = logging.getLogger(__name__)
 
 
-class PVManager(ComponentManager):
+class PVManager(SetPowerMixin, ComponentManager):
     """Manage PV inverters for the power distributor."""
 
     @override
@@ -176,79 +176,15 @@ async def distribute_power(self, request: Request) -> None:
             request.power,
             allocations,
         )
-        await self._set_api_power(request, allocations, remaining_power)
-
-    async def _set_api_power(  # pylint: disable=too-many-locals
-        self,
-        request: Request,
-        allocations: dict[ComponentId, Power],
-        remaining_power: Power,
-    ) -> None:
-        api_client = connection_manager.get().api_client
-        tasks: dict[ComponentId, asyncio.Task[datetime | None]] = {}
-        for component_id, power in allocations.items():
-            tasks[component_id] = asyncio.create_task(
-                api_client.set_component_power_active(component_id, power.as_watts())
-            )
-        _, pending = await asyncio.wait(
-            tasks.values(),
-            timeout=self._api_power_request_timeout.total_seconds(),
-            return_when=asyncio.ALL_COMPLETED,
-        )
-        # collect the timed out tasks and cancel them while keeping the
-        # exceptions, so that they can be processed later.
-        for task in pending:
-            task.cancel()
-        await asyncio.gather(*pending, return_exceptions=True)
-
-        failed_components: set[ComponentId] = set()
-        succeeded_components: set[ComponentId] = set()
-        failed_power = Power.zero()
-        for component_id, task in tasks.items():
-            try:
-                task.result()
-            except asyncio.CancelledError:
-                _logger.warning(
-                    "Timeout while setting power to PV inverter %s", component_id
-                )
-            except ApiClientError as exc:
-                _logger.warning(
-                    "Got a client error while setting power to PV inverter %s: %s",
-                    component_id,
-                    exc,
-                )
-            except Exception:  # pylint: disable=broad-except
-                _logger.exception(
-                    "Unknown error while setting power to PV inverter: %s",
-                    component_id,
-                )
-            else:
-                succeeded_components.add(component_id)
-                continue
-
-            failed_components.add(component_id)
-            failed_power += allocations[component_id]
-
-        if failed_components:
-            await self._results_sender.send(
-                PartialFailure(
-                    failed_components=failed_components,
-                    succeeded_components=succeeded_components,
-                    failed_power=failed_power,
-                    succeeded_power=request.power - failed_power - remaining_power,
-                    excess_power=remaining_power,
-                    request=request,
-                )
-            )
-            return
-        await self._results_sender.send(
-            Success(
-                succeeded_components=succeeded_components,
-                succeeded_power=request.power - remaining_power,
-                excess_power=remaining_power,
-                request=request,
-            )
+        result = await self._set_api_power(
+            request=request,
+            target_power=request.power,
+            allocations=allocations,
+            api_request_timeout=self._api_power_request_timeout,
+            remaining_power=remaining_power,
+            component_category="PV inverter",
         )
+        await self._results_sender.send(result)
 
     def _get_pv_inverter_ids(self) -> collections.abc.Set[ComponentId]:
         """Return the IDs of all PV inverters present in the component graph."""

src/frequenz/sdk/microgrid/_power_distributing/_component_managers/_set_power_mixin.py

@@ -0,0 +1,113 @@
+# License: MIT
+# Copyright © 2026 Frequenz Energy-as-a-Service GmbH
+
+"""Mixin for setting component powers via microgrid API."""
+
+import asyncio
+import logging
+from datetime import datetime, timedelta
+
+from frequenz.client.base.exception import ApiClientError
+from frequenz.client.common.microgrid.components import ComponentId
+from frequenz.quantities import Power
+
+from ... import connection_manager
+
+from ..request import Request
+from ..result import PartialFailure, Result, Success
+
+_logger = logging.getLogger(__name__)
+
+
+class SetPowerMixin:
+    """Mixin for setting component powers via microgrid API."""
+
+    @staticmethod
+    async def _set_api_power(  # pylint: disable=too-many-locals,too-many-arguments
+        *,
+        request: Request,
+        target_power: Power,
+        allocations: dict[ComponentId, Power],
+        api_request_timeout: timedelta,
+        remaining_power: Power,
+        component_category: str,
+    ) -> Result:
+        """Send the component power changes to the microgrid API.
+
+        Args:
+            request: Set-power request sent to the `PowerDistributingActor`.
+            target_power: The requested power.
+            allocations: A dictionary containing the new power allocations for
+                each component.
+            api_request_timeout: The timeout for the API request.
+            remaining_power: Any excess (remaining) power.
+            component_category: Component category name, for display purposes.
+
+        Returns:
+            Power distribution result, corresponding to the result of the API
+                request.
+        """
+        api_client = connection_manager.get().api_client
+        tasks: dict[ComponentId, asyncio.Task[datetime | None]] = {}
+        for component_id, power in allocations.items():
+            tasks[component_id] = asyncio.create_task(
+                api_client.set_component_power_active(component_id, power.as_watts())
+            )
+        _, pending = await asyncio.wait(
+            tasks.values(),
+            timeout=api_request_timeout.total_seconds(),
+            return_when=asyncio.ALL_COMPLETED,
+        )
+        # collect the timed out tasks and cancel them while keeping the
+        # exceptions, so that they can be processed later.
+        for task in pending:
+            task.cancel()
+        await asyncio.gather(*pending, return_exceptions=True)
+
+        failed_components: set[ComponentId] = set()
+        succeeded_components: set[ComponentId] = set()
+        failed_power = Power.zero()
+        for component_id, task in tasks.items():
+            try:
+                task.result()
+            except asyncio.CancelledError:
+                _logger.warning(
+                    "Timeout while setting power to %s %s",
+                    component_category,
+                    component_id,
+                )
+            except ApiClientError as exc:
+                _logger.warning(
+                    "Got a client error while setting power to %s %s: %s",
+                    component_category,
+                    component_id,
+                    exc,
+                )
+            except Exception:  # pylint: disable=broad-except
+                _logger.exception(
+                    "Unknown error while setting power to %s: %s",
+                    component_category,
+                    component_id,
+                )
+            else:
+                succeeded_components.add(component_id)
+                continue
+
+            failed_components.add(component_id)
+            failed_power += allocations[component_id]
+
+        if failed_components:
+            return PartialFailure(
+                failed_components=failed_components,
+                succeeded_components=succeeded_components,
+                failed_power=failed_power,
+                succeeded_power=target_power - failed_power - remaining_power,
+                excess_power=remaining_power,
+                request=request,
+            )
+        return Success(
+            succeeded_components=succeeded_components,
+            succeeded_power=target_power - remaining_power,
+            excess_power=remaining_power,
+            request=request,
+        )