Add batch actions (purge, query orchestrations/entities)

durabletask/client.py

@@ -6,10 +6,9 @@
 from dataclasses import dataclass
 from datetime import datetime, timezone
 from enum import Enum
-from typing import Any, Optional, Sequence, TypeVar, Union
+from typing import Any, List, Optional, Sequence, TypeVar, Union
 
 import grpc
-from google.protobuf import wrappers_pb2
 
 from durabletask.entities import EntityInstanceId
 from durabletask.entities.entity_metadata import EntityMetadata
@@ -57,6 +56,39 @@ def raise_if_failed(self):
                 self.failure_details)
 
 
+@dataclass
+class OrchestrationQuery:
+    created_time_from: Optional[datetime] = None
+    created_time_to: Optional[datetime] = None
+    runtime_status: Optional[List[OrchestrationStatus]] = None
+    # Some backends don't respond well with max_instance_count = None, so we use the integer limit for non-paginated
+    # results instead.
+    max_instance_count: Optional[int] = (1 << 31) - 1
+    fetch_inputs_and_outputs: bool = False
+
+
+@dataclass
+class EntityQuery:
+    instance_id_starts_with: Optional[str] = None
+    last_modified_from: Optional[datetime] = None
+    last_modified_to: Optional[datetime] = None
+    include_state: bool = True
+    include_transient: bool = False
+    page_size: Optional[int] = None
+
+
+@dataclass
+class PurgeInstancesResult:
+    deleted_instance_count: int
+    is_complete: bool
+
+
+@dataclass
+class CleanEntityStorageResult:
+    empty_entities_removed: int
+    orphaned_locks_released: int
+
+
 class OrchestrationFailedError(Exception):
     def __init__(self, message: str, failure_details: task.FailureDetails):
         super().__init__(message)
@@ -73,6 +105,12 @@ def new_orchestration_state(instance_id: str, res: pb.GetInstanceResponse) -> Op
 
     state = res.orchestrationState
 
+    new_state = parse_orchestration_state(state)
+    new_state.instance_id = instance_id  # Override instance_id with the one from the request, to match old behavior
+    return new_state
+
+
+def parse_orchestration_state(state: pb.OrchestrationState) -> OrchestrationState:
     failure_details = None
     if state.failureDetails.errorMessage != '' or state.failureDetails.errorType != '':
         failure_details = task.FailureDetails(
@@ -81,7 +119,7 @@ def new_orchestration_state(instance_id: str, res: pb.GetInstanceResponse) -> Op
             state.failureDetails.stackTrace.value if not helpers.is_empty(state.failureDetails.stackTrace) else None)
 
     return OrchestrationState(
-        instance_id,
+        state.instanceId,
         state.name,
         OrchestrationStatus(state.orchestrationStatus),
         state.createdTimestamp.ToDatetime(),
@@ -93,7 +131,6 @@ def new_orchestration_state(instance_id: str, res: pb.GetInstanceResponse) -> Op
 
 
 class TaskHubGrpcClient:
-
     def __init__(self, *,
                  host_address: Optional[str] = None,
                  metadata: Optional[list[tuple[str, str]]] = None,
@@ -136,7 +173,7 @@ def schedule_new_orchestration(self, orchestrator: Union[task.Orchestrator[TInpu
         req = pb.CreateInstanceRequest(
             name=name,
             instanceId=instance_id if instance_id else uuid.uuid4().hex,
-            input=wrappers_pb2.StringValue(value=shared.to_json(input)) if input is not None else None,
+            input=helpers.get_string_value(shared.to_json(input) if input is not None else None),
             scheduledStartTimestamp=helpers.new_timestamp(start_at) if start_at else None,
             version=helpers.get_string_value(version if version else self.default_version),
             orchestrationIdReusePolicy=reuse_id_policy,
@@ -152,6 +189,42 @@ def get_orchestration_state(self, instance_id: str, *, fetch_payloads: bool = Tr
         res: pb.GetInstanceResponse = self._stub.GetInstance(req)
         return new_orchestration_state(req.instanceId, res)
 
+    def get_all_orchestration_states(self,
+                                     orchestration_query: Optional[OrchestrationQuery] = None
+                                     ) -> List[OrchestrationState]:
+        if orchestration_query is None:
+            orchestration_query = OrchestrationQuery()
+        _continuation_token = None
+
+        self._logger.info(f"Querying orchestration instances with query: {orchestration_query}")
+
+        states = []
+
+        while True:
+            req = pb.QueryInstancesRequest(
+                query=pb.InstanceQuery(
+                    runtimeStatus=[status.value for status in orchestration_query.runtime_status] if orchestration_query.runtime_status else None,
+                    createdTimeFrom=helpers.new_timestamp(orchestration_query.created_time_from) if orchestration_query.created_time_from else None,
+                    createdTimeTo=helpers.new_timestamp(orchestration_query.created_time_to) if orchestration_query.created_time_to else None,
+                    maxInstanceCount=orchestration_query.max_instance_count,
+                    fetchInputsAndOutputs=orchestration_query.fetch_inputs_and_outputs,
+                    continuationToken=_continuation_token
+                )
+            )
+            resp: pb.QueryInstancesResponse = self._stub.QueryInstances(req)
+            states += [parse_orchestration_state(res) for res in resp.orchestrationState]
+            # Check the value for continuationToken - none or "0" indicates that there are no more results.
+            if resp.continuationToken and resp.continuationToken.value and resp.continuationToken.value != "0":
+                self._logger.info(f"Received continuation token with value {resp.continuationToken.value}, fetching next list of instances...")
+                if _continuation_token and _continuation_token.value and _continuation_token.value == resp.continuationToken.value:
+                    self._logger.warning(f"Received the same continuation token value {resp.continuationToken.value} again, stopping to avoid infinite loop.")
+                    break
+                _continuation_token = resp.continuationToken
+            else:
+                break
+
+        return states
+
     def wait_for_orchestration_start(self, instance_id: str, *,
                                      fetch_payloads: bool = False,
                                      timeout: int = 60) -> Optional[OrchestrationState]:
@@ -199,7 +272,8 @@ def raise_orchestration_event(self, instance_id: str, event_name: str, *,
         req = pb.RaiseEventRequest(
             instanceId=instance_id,
             name=event_name,
-            input=wrappers_pb2.StringValue(value=shared.to_json(data)) if data else None)
+            input=helpers.get_string_value(shared.to_json(data) if data is not None else None)
+        )
 
         self._logger.info(f"Raising event '{event_name}' for instance '{instance_id}'.")
         self._stub.RaiseEvent(req)
@@ -209,7 +283,7 @@ def terminate_orchestration(self, instance_id: str, *,
                                 recursive: bool = True):
         req = pb.TerminateRequest(
             instanceId=instance_id,
-            output=wrappers_pb2.StringValue(value=shared.to_json(output)) if output else None,
+            output=helpers.get_string_value(shared.to_json(output) if output is not None else None),
             recursive=recursive)
 
         self._logger.info(f"Terminating instance '{instance_id}'.")
@@ -225,10 +299,31 @@ def resume_orchestration(self, instance_id: str):
         self._logger.info(f"Resuming instance '{instance_id}'.")
         self._stub.ResumeInstance(req)
 
-    def purge_orchestration(self, instance_id: str, recursive: bool = True):
+    def purge_orchestration(self, instance_id: str, recursive: bool = True) -> PurgeInstancesResult:
         req = pb.PurgeInstancesRequest(instanceId=instance_id, recursive=recursive)
         self._logger.info(f"Purging instance '{instance_id}'.")
-        self._stub.PurgeInstances(req)
+        resp: pb.PurgeInstancesResponse = self._stub.PurgeInstances(req)
+        return PurgeInstancesResult(resp.deletedInstanceCount, resp.isComplete.value)
+
+    def purge_orchestrations_by(self,
+                                created_time_from: Optional[datetime] = None,
+                                created_time_to: Optional[datetime] = None,
+                                runtime_status: Optional[List[OrchestrationStatus]] = None,
+                                recursive: bool = False) -> PurgeInstancesResult:
+        self._logger.info("Purging orchestrations by filter: "
+                          f"created_time_from={created_time_from}, "
+                          f"created_time_to={created_time_to}, "
+                          f"runtime_status={[str(status) for status in runtime_status] if runtime_status else None}, "
+                          f"recursive={recursive}")
+        resp: pb.PurgeInstancesResponse = self._stub.PurgeInstances(pb.PurgeInstancesRequest(
+            purgeInstanceFilter=pb.PurgeInstanceFilter(
+                createdTimeFrom=helpers.new_timestamp(created_time_from) if created_time_from else None,
+                createdTimeTo=helpers.new_timestamp(created_time_to) if created_time_to else None,
+                runtimeStatus=[status.value for status in runtime_status] if runtime_status else None
+            ),
+            recursive=recursive
+        ))
+        return PurgeInstancesResult(resp.deletedInstanceCount, resp.isComplete.value)
 
     def signal_entity(self,
                       entity_instance_id: EntityInstanceId,
@@ -237,7 +332,7 @@ def signal_entity(self,
         req = pb.SignalEntityRequest(
             instanceId=str(entity_instance_id),
             name=operation_name,
-            input=wrappers_pb2.StringValue(value=shared.to_json(input)) if input else None,
+            input=helpers.get_string_value(shared.to_json(input) if input is not None else None),
             requestId=str(uuid.uuid4()),
             scheduledTime=None,
             parentTraceContext=None,
@@ -256,4 +351,69 @@ def get_entity(self,
         if not res.exists:
             return None
 
-        return EntityMetadata.from_entity_response(res, include_state)
+        return EntityMetadata.from_entity_metadata(res.entity, include_state)
+
+    def get_all_entities(self,
+                         entity_query: Optional[EntityQuery] = None) -> List[EntityMetadata]:
+        if entity_query is None:
+            entity_query = EntityQuery()
+        _continuation_token = None
+
+        self._logger.info(f"Retrieving entities by filter: {entity_query}")
+
+        entities = []
+
+        while True:
+            query_request = pb.QueryEntitiesRequest(
+                query=pb.EntityQuery(
+                    instanceIdStartsWith=helpers.get_string_value(entity_query.instance_id_starts_with),
+                    lastModifiedFrom=helpers.new_timestamp(entity_query.last_modified_from) if entity_query.last_modified_from else None,
+                    lastModifiedTo=helpers.new_timestamp(entity_query.last_modified_to) if entity_query.last_modified_to else None,
+                    includeState=entity_query.include_state,
+                    includeTransient=entity_query.include_transient,
+                    pageSize=helpers.get_int_value(entity_query.page_size),
+                    continuationToken=_continuation_token
+                )
+            )
+            resp: pb.QueryEntitiesResponse = self._stub.QueryEntities(query_request)
+            entities += [EntityMetadata.from_entity_metadata(entity, query_request.query.includeState) for entity in resp.entities]
+            if resp.continuationToken and resp.continuationToken.value and resp.continuationToken.value != "0":
+                self._logger.info(f"Received continuation token with value {resp.continuationToken.value}, fetching next page of entities...")
+                if _continuation_token and _continuation_token.value and _continuation_token.value == resp.continuationToken.value:
+                    self._logger.warning(f"Received the same continuation token value {resp.continuationToken.value} again, stopping to avoid infinite loop.")
+                    break
+                _continuation_token = resp.continuationToken
+            else:
+                break
+        return entities
+
+    def clean_entity_storage(self,
+                             remove_empty_entities: bool = True,
+                             release_orphaned_locks: bool = True
+                             ) -> CleanEntityStorageResult:
+        self._logger.info("Cleaning entity storage")
+
+        empty_entities_removed = 0
+        orphaned_locks_released = 0
+        _continuation_token = None
+
+        while True:
+            req = pb.CleanEntityStorageRequest(
+                removeEmptyEntities=remove_empty_entities,
+                releaseOrphanedLocks=release_orphaned_locks,
+                continuationToken=_continuation_token
+            )
+            resp: pb.CleanEntityStorageResponse = self._stub.CleanEntityStorage(req)
+            empty_entities_removed += resp.emptyEntitiesRemoved
+            orphaned_locks_released += resp.orphanedLocksReleased
+
+            if resp.continuationToken and resp.continuationToken.value and resp.continuationToken.value != "0":
+                self._logger.info(f"Received continuation token with value {resp.continuationToken.value}, cleaning next page...")
+                if _continuation_token and _continuation_token.value and _continuation_token.value == resp.continuationToken.value:
+                    self._logger.warning(f"Received the same continuation token value {resp.continuationToken.value} again, stopping to avoid infinite loop.")
+                    break
+                _continuation_token = resp.continuationToken
+            else:
+                break
+
+        return CleanEntityStorageResult(empty_entities_removed, orphaned_locks_released)

durabletask/entities/entity_metadata.py

@@ -44,18 +44,22 @@ def __init__(self,
 
     @staticmethod
     def from_entity_response(entity_response: pb.GetEntityResponse, includes_state: bool):
+        return EntityMetadata.from_entity_metadata(entity_response.entity, includes_state)
+
+    @staticmethod
+    def from_entity_metadata(entity: pb.EntityMetadata, includes_state: bool):
         try:
-            entity_id = EntityInstanceId.parse(entity_response.entity.instanceId)
+            entity_id = EntityInstanceId.parse(entity.instanceId)
         except ValueError:
             raise ValueError("Invalid entity instance ID in entity response.")
         entity_state = None
         if includes_state:
-            entity_state = entity_response.entity.serializedState.value
+            entity_state = entity.serializedState.value
         return EntityMetadata(
             id=entity_id,
-            last_modified=entity_response.entity.lastModifiedTime.ToDatetime(timezone.utc),
-            backlog_queue_size=entity_response.entity.backlogQueueSize,
-            locked_by=entity_response.entity.lockedBy.value,
+            last_modified=entity.lastModifiedTime.ToDatetime(timezone.utc),
+            backlog_queue_size=entity.backlogQueueSize,
+            locked_by=entity.lockedBy.value,
             includes_state=includes_state,
             state=entity_state
         )

durabletask/internal/helpers.py

@@ -184,6 +184,13 @@ def get_string_value(val: Optional[str]) -> Optional[wrappers_pb2.StringValue]:
         return wrappers_pb2.StringValue(value=val)
 
 
+def get_int_value(val: Optional[int]) -> Optional[wrappers_pb2.Int32Value]:
+    if val is None:
+        return None
+    else:
+        return wrappers_pb2.Int32Value(value=val)
+
+
 def get_string_value_or_empty(val: Optional[str]) -> wrappers_pb2.StringValue:
     if val is None:
         return wrappers_pb2.StringValue(value="")