mirror of
https://github.com/invoke-ai/InvokeAI
synced 2024-08-30 20:32:17 +00:00
2a35d93a4d
**Service Dependencies** Services that depend on other services now access those services via the `Invoker` object. This object is provided to the service as a kwarg to its `start()` method. Until now, most services did not utilize this feature, and several services required their dependencies to be initialized and passed in on init. Additionally, _all_ services are now registered as invocation services - including the low-level services. This obviates issues with inter-dependent services we would otherwise experience as we add workflow storage. **Database Access** Previously, we were passing in a separate sqlite connection and corresponding lock as args to services in their init. A good amount of posturing was done in each service that uses the db. These objects, along with the sqlite startup and cleanup logic, is now abstracted into a simple `SqliteDatabase` class. This creates the shared connection and lock objects, enables foreign keys, and provides a `clean()` method to do startup db maintenance. This is not a service as it's only used by sqlite services.
206 lines
9.9 KiB
Python
206 lines
9.9 KiB
Python
import time
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import traceback
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from threading import BoundedSemaphore, Event, Thread
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from typing import Optional
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import invokeai.backend.util.logging as logger
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from ..invocations.baseinvocation import InvocationContext
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from ..models.exceptions import CanceledException
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from .invocation_queue import InvocationQueueItem
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from .invoker import InvocationProcessorABC, Invoker
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class DefaultInvocationProcessor(InvocationProcessorABC):
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__invoker_thread: Thread
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__stop_event: Event
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__invoker: Invoker
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__threadLimit: BoundedSemaphore
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def start(self, invoker) -> None:
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# if we do want multithreading at some point, we could make this configurable
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self.__threadLimit = BoundedSemaphore(1)
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self.__invoker = invoker
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self.__stop_event = Event()
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self.__invoker_thread = Thread(
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name="invoker_processor",
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target=self.__process,
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kwargs=dict(stop_event=self.__stop_event),
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)
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self.__invoker_thread.daemon = True # TODO: make async and do not use threads
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self.__invoker_thread.start()
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def stop(self, *args, **kwargs) -> None:
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self.__stop_event.set()
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def __process(self, stop_event: Event):
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try:
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self.__threadLimit.acquire()
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queue_item: Optional[InvocationQueueItem] = None
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while not stop_event.is_set():
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try:
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queue_item = self.__invoker.services.queue.get()
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except Exception as e:
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self.__invoker.services.logger.error("Exception while getting from queue:\n%s" % e)
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if not queue_item: # Probably stopping
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# do not hammer the queue
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time.sleep(0.5)
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continue
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try:
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graph_execution_state = self.__invoker.services.graph_execution_manager.get(
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queue_item.graph_execution_state_id
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)
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except Exception as e:
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self.__invoker.services.logger.error("Exception while retrieving session:\n%s" % e)
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self.__invoker.services.events.emit_session_retrieval_error(
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queue_batch_id=queue_item.session_queue_batch_id,
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queue_item_id=queue_item.session_queue_item_id,
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queue_id=queue_item.session_queue_id,
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graph_execution_state_id=queue_item.graph_execution_state_id,
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error_type=e.__class__.__name__,
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error=traceback.format_exc(),
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)
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continue
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try:
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invocation = graph_execution_state.execution_graph.get_node(queue_item.invocation_id)
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except Exception as e:
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self.__invoker.services.logger.error("Exception while retrieving invocation:\n%s" % e)
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self.__invoker.services.events.emit_invocation_retrieval_error(
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queue_batch_id=queue_item.session_queue_batch_id,
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queue_item_id=queue_item.session_queue_item_id,
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queue_id=queue_item.session_queue_id,
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graph_execution_state_id=queue_item.graph_execution_state_id,
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node_id=queue_item.invocation_id,
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error_type=e.__class__.__name__,
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error=traceback.format_exc(),
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)
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continue
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# get the source node id to provide to clients (the prepared node id is not as useful)
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source_node_id = graph_execution_state.prepared_source_mapping[invocation.id]
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# Send starting event
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self.__invoker.services.events.emit_invocation_started(
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queue_batch_id=queue_item.session_queue_batch_id,
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queue_item_id=queue_item.session_queue_item_id,
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queue_id=queue_item.session_queue_id,
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graph_execution_state_id=graph_execution_state.id,
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node=invocation.dict(),
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source_node_id=source_node_id,
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)
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# Invoke
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try:
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graph_id = graph_execution_state.id
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with self.__invoker.services.performance_statistics.collect_stats(invocation, graph_id):
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# use the internal invoke_internal(), which wraps the node's invoke() method,
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# which handles a few things:
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# - nodes that require a value, but get it only from a connection
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# - referencing the invocation cache instead of executing the node
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outputs = invocation.invoke_internal(
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InvocationContext(
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services=self.__invoker.services,
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graph_execution_state_id=graph_execution_state.id,
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queue_item_id=queue_item.session_queue_item_id,
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queue_id=queue_item.session_queue_id,
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queue_batch_id=queue_item.session_queue_batch_id,
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)
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)
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# Check queue to see if this is canceled, and skip if so
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if self.__invoker.services.queue.is_canceled(graph_execution_state.id):
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continue
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# Save outputs and history
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graph_execution_state.complete(invocation.id, outputs)
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# Save the state changes
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self.__invoker.services.graph_execution_manager.set(graph_execution_state)
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# Send complete event
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self.__invoker.services.events.emit_invocation_complete(
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queue_batch_id=queue_item.session_queue_batch_id,
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queue_item_id=queue_item.session_queue_item_id,
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queue_id=queue_item.session_queue_id,
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graph_execution_state_id=graph_execution_state.id,
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node=invocation.dict(),
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source_node_id=source_node_id,
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result=outputs.dict(),
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)
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self.__invoker.services.performance_statistics.log_stats()
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except KeyboardInterrupt:
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pass
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except CanceledException:
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self.__invoker.services.performance_statistics.reset_stats(graph_execution_state.id)
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pass
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except Exception as e:
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error = traceback.format_exc()
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logger.error(error)
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# Save error
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graph_execution_state.set_node_error(invocation.id, error)
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# Save the state changes
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self.__invoker.services.graph_execution_manager.set(graph_execution_state)
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self.__invoker.services.logger.error("Error while invoking:\n%s" % e)
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# Send error event
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self.__invoker.services.events.emit_invocation_error(
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queue_batch_id=queue_item.session_queue_batch_id,
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queue_item_id=queue_item.session_queue_item_id,
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queue_id=queue_item.session_queue_id,
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graph_execution_state_id=graph_execution_state.id,
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node=invocation.dict(),
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source_node_id=source_node_id,
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error_type=e.__class__.__name__,
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error=error,
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)
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self.__invoker.services.performance_statistics.reset_stats(graph_execution_state.id)
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pass
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# Check queue to see if this is canceled, and skip if so
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if self.__invoker.services.queue.is_canceled(graph_execution_state.id):
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continue
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# Queue any further commands if invoking all
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is_complete = graph_execution_state.is_complete()
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if queue_item.invoke_all and not is_complete:
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try:
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self.__invoker.invoke(
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session_queue_batch_id=queue_item.session_queue_batch_id,
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session_queue_item_id=queue_item.session_queue_item_id,
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session_queue_id=queue_item.session_queue_id,
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graph_execution_state=graph_execution_state,
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invoke_all=True,
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)
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except Exception as e:
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self.__invoker.services.logger.error("Error while invoking:\n%s" % e)
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self.__invoker.services.events.emit_invocation_error(
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queue_batch_id=queue_item.session_queue_batch_id,
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queue_item_id=queue_item.session_queue_item_id,
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queue_id=queue_item.session_queue_id,
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graph_execution_state_id=graph_execution_state.id,
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node=invocation.dict(),
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source_node_id=source_node_id,
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error_type=e.__class__.__name__,
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error=traceback.format_exc(),
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)
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elif is_complete:
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self.__invoker.services.events.emit_graph_execution_complete(
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queue_batch_id=queue_item.session_queue_batch_id,
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queue_item_id=queue_item.session_queue_item_id,
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queue_id=queue_item.session_queue_id,
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graph_execution_state_id=graph_execution_state.id,
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)
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except KeyboardInterrupt:
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pass # Log something? KeyboardInterrupt is probably not going to be seen by the processor
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finally:
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self.__threadLimit.release()
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