Merge pull request #495 from DiamondLightSource/480_better_status_log…

…ging

480 better status logging

src/artemis/devices/eiger.py

@@ -1,9 +1,9 @@
 from enum import Enum
 from typing import Optional
 
-from ophyd import Component, Device, EpicsSignalRO, StatusBase
+from ophyd import Component, Device, EpicsSignalRO
 from ophyd.areadetector.cam import EigerDetectorCam
-from ophyd.status import Status
+from ophyd.status import AndStatus, Status, SubscriptionStatus
 
 from artemis.devices.detector import DetectorParams
 from artemis.devices.eiger_odin import EigerOdin
@@ -41,7 +41,7 @@ class EigerDetector(Device):
 
     STALE_PARAMS_TIMEOUT = 60
 
-    filewriters_finished: StatusBase
+    filewriters_finished: SubscriptionStatus
 
     detector_params: Optional[DetectorParams] = None
 
@@ -129,7 +129,7 @@ def change_roi_mode(self, enable: bool):
         if not status.success:
             self.log.error("Failed to switch to ROI mode")
 
-    def set_cam_pvs(self) -> Status:
+    def set_cam_pvs(self) -> AndStatus:
         assert self.detector_params is not None
         status = self.cam.acquire_time.set(self.detector_params.exposure_time)
         status &= self.cam.acquire_period.set(self.detector_params.exposure_time)

src/artemis/devices/eiger_odin.py

@@ -1,14 +1,8 @@
 from typing import List, Tuple
 
-from ophyd import (
-    Component,
-    Device,
-    EpicsSignal,
-    EpicsSignalRO,
-    EpicsSignalWithRBV,
-    StatusBase,
-)
+from ophyd import Component, Device, EpicsSignal, EpicsSignalRO, EpicsSignalWithRBV
 from ophyd.areadetector.plugins import HDF5Plugin_V22
+from ophyd.status import SubscriptionStatus
 
 from artemis.devices.status import await_value
 
@@ -120,7 +114,7 @@ class EigerOdin(Device):
     meta: OdinMetaListener = Component(OdinMetaListener, "OD:META:")
     nodes: OdinNodesStatus = Component(OdinNodesStatus, "")
 
-    def create_finished_status(self) -> StatusBase:
+    def create_finished_status(self) -> SubscriptionStatus:
         writing_finished = await_value(self.meta.ready, 0)
         for node_pv in self.nodes.nodes:
             writing_finished &= await_value(node_pv.writing, 0)

src/artemis/devices/status.py

@@ -1,12 +1,11 @@
 from typing import Any, TypeVar
 
-from ophyd import StatusBase
 from ophyd.status import SubscriptionStatus
 
 T = TypeVar("T")
 
 
-def await_value(subscribable: Any, expected_value: T) -> StatusBase:
+def await_value(subscribable: Any, expected_value: T) -> SubscriptionStatus:
     def value_is(value, **_):
         return value == expected_value