feat(api): add error flag to image ready response

api/onnx_web/server/api.py

@@ -50,9 +50,11 @@ from .utils import wrap_route
 logger = getLogger(__name__)
 
 
-def ready_reply(ready: bool, progress: int = 0):
+def ready_reply(ready: bool, progress: int = 0, error: bool = False, cancel: bool = False):
     return jsonify(
         {
+            "cancel": cancel,
+            "error": error,
             "progress": progress,
             "ready": ready,
         }
@@ -437,7 +439,7 @@ def cancel(context: ServerContext, pool: DevicePoolExecutor):
     output_file = sanitize_name(output_file)
     cancel = pool.cancel(output_file)
 
-    return ready_reply(cancel)
+    return ready_reply(cancel == False, cancel=cancel)
 
 
 def ready(context: ServerContext, pool: DevicePoolExecutor):
@@ -446,14 +448,14 @@ def ready(context: ServerContext, pool: DevicePoolExecutor):
         return error_reply("output name is required")
 
     output_file = sanitize_name(output_file)
-    done, progress = pool.done(output_file)
+    progress = pool.done(output_file)
 
-    if done is None:
+    if progress is None:
         output = base_join(context.output_path, output_file)
         if path.exists(output):
             return ready_reply(True)
 
-    return ready_reply(done or False, progress=progress)
+    return ready_reply(progress.finished, progress=progress.progress, error=progress.error, cancel=progress.cancel)
 
 
 def status(context: ServerContext, pool: DevicePoolExecutor):

api/onnx_web/worker/command.py

@@ -0,0 +1,43 @@
+from typing import Callable, Any
+
+class ProgressCommand():
+  device: str
+  job: str
+  finished: bool
+  progress: int
+  cancel: bool
+  error: bool
+
+  def __init__(
+    self,
+    job: str,
+    device: str,
+    finished: bool,
+    progress: int,
+    cancel: bool = False,
+    error: bool = False,
+  ):
+    self.job = job
+    self.device = device
+    self.finished = finished
+    self.progress = progress
+    self.cancel = cancel
+    self.error = error
+
+class JobCommand():
+  name: str
+  fn: Callable[..., None]
+  args: Any
+  kwargs: dict[str, Any]
+
+  def __init__(
+    self,
+    name: str,
+    fn: Callable[..., None],
+    args: Any,
+    kwargs: dict[str, Any],
+  ):
+    self.name = name
+    self.fn = fn
+    self.args = args
+    self.kwargs = kwargs

api/onnx_web/worker/context.py

@@ -4,6 +4,7 @@ from typing import Any, Callable, Tuple
 
 from torch.multiprocessing import Queue, Value
 
+from .command import JobCommand, ProgressCommand
 from ..params import DeviceParams
 
 logger = getLogger(__name__)
@@ -15,9 +16,9 @@ ProgressCallback = Callable[[int, int, Any], None]
 class WorkerContext:
     cancel: "Value[bool]"
     job: str
-    pending: "Queue[Tuple[str, Callable[..., None], Any, Any]]"
+    pending: "Queue[JobCommand]"
     current: "Value[int]"
-    progress: "Queue[Tuple[str, str, int]]"
+    progress: "Queue[ProgressCommand]"
 
     def __init__(
         self,
@@ -25,16 +26,14 @@ class WorkerContext:
         device: DeviceParams,
         cancel: "Value[bool]",
         logs: "Queue[str]",
-        pending: "Queue[Tuple[str, Callable[..., None], Any, Any]]",
+        pending: "Queue[JobCommand]",
-        progress: "Queue[Tuple[str, str, int]]",
+        progress: "Queue[ProgressCommand]",
-        finished: "Queue[Tuple[str, str]]",
         current: "Value[int]",
     ):
         self.job = job
         self.device = device
         self.cancel = cancel
         self.progress = progress
-        self.finished = finished
         self.logs = logs
         self.pending = pending
         self.current = current
@@ -61,11 +60,7 @@ class WorkerContext:
     def get_progress_callback(self) -> ProgressCallback:
         def on_progress(step: int, timestep: int, latents: Any):
             on_progress.step = step
-            if self.is_cancelled():
+            self.set_progress(step)
-                raise RuntimeError("job has been cancelled")
-            else:
-                logger.debug("setting progress for job %s to %s", self.job, step)
-                self.set_progress(step)
 
         return on_progress
 
@@ -74,14 +69,22 @@ class WorkerContext:
             self.cancel.value = cancel
 
     def set_progress(self, progress: int) -> None:
-        self.progress.put((self.job, self.device.device, progress), block=False)
+        if self.is_cancelled():
+            raise RuntimeError("job has been cancelled")
+        else:
+            logger.debug("setting progress for job %s to %s", self.job, progress)
+            self.progress.put(ProgressCommand(self.job, self.device.device, False, progress, self.is_cancelled(), False), block=False)
 
     def set_finished(self) -> None:
-        self.finished.put((self.job, self.device.device), block=False)
+        logger.debug("setting finished for job %s", self.job)
+        self.progress.put(ProgressCommand(self.job, self.device.device, True, self.get_progress(), self.is_cancelled(), False), block=False)
 
-    def clear_flags(self) -> None:
+    def set_failed(self) -> None:
-        self.set_cancel(False)
+        logger.warning("setting failure for job %s", self.job)
-        self.set_progress(0)
+        try:
+            self.progress.put(ProgressCommand(self.job, self.device.device, True, self.get_progress(), self.is_cancelled(), True), block=False)
+        except:
+            logger.exception("error setting failure on job %s", self.job)
 
 
 class JobStatus:

api/onnx_web/worker/pool.py

@@ -8,6 +8,7 @@ from torch.multiprocessing import Process, Queue, Value
 
 from ..params import DeviceParams
 from ..server import ServerContext
+from .command import JobCommand, ProgressCommand
 from .context import WorkerContext
 from .worker import worker_main
 
@@ -24,18 +25,17 @@ class DevicePoolExecutor:
     leaking: List[Tuple[str, Process]]
     context: Dict[str, WorkerContext]  # Device -> Context
     current: Dict[str, "Value[int]"]
-    pending: Dict[str, "Queue[Tuple[str, Callable[..., None], Any, Any]]"]
+    pending: Dict[str, "Queue[JobCommand]"]
     threads: Dict[str, Thread]
     workers: Dict[str, Process]
 
-    active_jobs: Dict[str, Tuple[str, int]]  # should be Dict[Device, JobStatus]
+    active_jobs: Dict[str, ProgressCommand] # Device -> job progress
     cancelled_jobs: List[str]
-    finished_jobs: List[Tuple[str, int, bool]]  # should be List[JobStatus]
+    finished_jobs: List[ProgressCommand]
     total_jobs: Dict[str, int]  # Device -> job count
 
-    logs: "Queue"
+    logs: "Queue[str]"
-    progress: "Queue[Tuple[str, str, int]]"
+    progress: "Queue[ProgressCommand]"
-    finished: "Queue[Tuple[str, str]]"
 
     def __init__(
         self,
@@ -142,18 +142,27 @@ class DevicePoolExecutor:
         logger_thread.start()
 
     def create_progress_worker(self) -> None:
-        def progress_worker(progress: Queue):
+        def update_job(progress: ProgressCommand):
+            if progress.finished:
+                logger.info("job has finished: %s", progress.job)
+                self.finished_jobs.append(progress)
+                del self.active_jobs[progress.job]
+                self.join_leaking()
+            else:
+                logger.debug("progress update for job: %s to %s", progress.job, progress.progress)
+                self.active_jobs[progress.job] = progress
+                if progress.job in self.cancelled_jobs:
+                    logger.debug(
+                        "setting flag for cancelled job: %s on %s", progress.job, progress.device
+                    )
+                    self.context[progress.device].set_cancel()
+
+        def progress_worker(queue: "Queue[ProgressCommand]"):
             logger.trace("checking in from progress worker thread")
             while True:
                 try:
-                    job, device, value = progress.get(timeout=(self.join_timeout / 2))
+                    progress = queue.get(timeout=(self.join_timeout / 2))
-                    logger.debug("progress update for job: %s to %s", job, value)
+                    update_job(progress)
-                    self.active_jobs[job] = (device, value)
-                    if job in self.cancelled_jobs:
-                        logger.debug(
-                            "setting flag for cancelled job: %s on %s", job, device
-                        )
-                        self.context[device].set_cancel()
                 except Empty:
                     pass
                 except ValueError:
@@ -178,12 +187,7 @@ class DevicePoolExecutor:
             while True:
                 try:
                     job, device = finished.get(timeout=(self.join_timeout / 2))
-                    logger.info("job has been finished: %s", job)
+
-                    context = self.context[device]
-                    _device, progress = self.active_jobs[job]
-                    self.finished_jobs.append((job, progress, context.cancel.value))
-                    del self.active_jobs[job]
-                    self.join_leaking()
                 except Empty:
                     pass
                 except ValueError:
@@ -232,37 +236,36 @@ class DevicePoolExecutor:
         should be cancelled on the next progress callback.
         """
 
-        self.cancelled_jobs.append(key)
+        for job in self.finished_jobs:
+            if job.job == key:
+                logger.debug("cannot cancel finished job: %s", key)
+                return False
 
         if key not in self.active_jobs:
-            logger.debug("cancelled job has not been started yet: %s", key)
+            logger.debug("cancelled job is not active: %s", key)
-            return True
+        else:
-
+            job = self.active_jobs[key]
-        device, _progress = self.active_jobs[key]
+            logger.info("cancelling job %s, active on device %s", key, job.device)
-        logger.info("cancelling job %s, active on device %s", key, device)
-
-        context = self.context[device]
-        context.set_cancel()
 
+        self.cancelled_jobs.append(key)
         return True
 
-    def done(self, key: str) -> Tuple[Optional[bool], int]:
+    def done(self, key: str) -> Optional[ProgressCommand]:
         """
         Check if a job has been finished and report the last progress update.
 
         If the job is still active or pending, the first item will be False.
         If the job is not finished or active, the first item will be None.
         """
-        for k, p, c in self.finished_jobs:
+        for job in self.finished_jobs:
-            if k == key:
+            if job.job == key:
-                return (True, p)
+                return job
 
         if key not in self.active_jobs:
             logger.debug("checking status for unknown job: %s", key)
-            return (None, 0)
+            return None
 
-        _device, progress = self.active_jobs[key]
+        return self.active_jobs[key]
-        return (False, progress)
 
     def join(self):
         logger.info("stopping worker pool")
@@ -387,22 +390,29 @@ class DevicePoolExecutor:
         logger.debug("job count for device %s: %s", device, self.total_jobs[device])
         self.recycle()
 
-        self.pending[device].put((key, fn, args, kwargs), block=False)
+        self.pending[device].put(JobCommand(key, fn, args, kwargs), block=False)
 
-    def status(self) -> List[Tuple[str, int, bool, bool]]:
+    def status(self) -> List[Tuple[str, int, bool, bool, bool]]:
         history = [
-            (name, progress, False, name in self.cancelled_jobs)
+            (
-            for name, (_device, progress) in self.active_jobs.items()
+                name,
+                job.progress,
+                job.finished,
+                job.cancel,
+                job.error,
+            )
+            for name, job in self.active_jobs.items()
         ]
         history.extend(
             [
                 (
-                    name,
+                    job.job,
-                    progress,
+                    job.progress,
-                    True,
+                    job.finished,
-                    cancel,
+                    job.cancel,
+                    job.error,
                 )
-                for name, progress, cancel in self.finished_jobs
+                for job in self.finished_jobs
             ]
         )
         return history

api/onnx_web/worker/worker.py

@@ -39,32 +39,36 @@ def worker_main(context: WorkerContext, server: ServerContext):
                 )
                 exit(EXIT_REPLACED)
 
-            name, fn, args, kwargs = context.pending.get(timeout=1.0)
+            job = context.pending.get(timeout=1.0)
-            logger.info("worker for %s got job: %s", context.device.device, name)
+            logger.info("worker for %s got job: %s", context.device.device, job.name)
 
-            context.job = name  # TODO: hax
+            context.job = job.name  # TODO: hax
-            context.clear_flags()
+            logger.info("starting job: %s", job.name)
-            logger.info("starting job: %s", name)
+            context.set_progress(0)
-            fn(context, *args, **kwargs)
+            job.fn(context, *job.args, **job.kwargs)
-            logger.info("job succeeded: %s", name)
+            logger.info("job succeeded: %s", job.name)
             context.set_finished()
         except Empty:
             pass
         except KeyboardInterrupt:
             logger.info("worker got keyboard interrupt")
+            context.set_failed()
             exit(EXIT_INTERRUPT)
         except ValueError as e:
-            logger.info(
+            logger.exception(
-                "value error in worker, exiting: %s",
+                "value error in worker, exiting: %s"
-                format_exception(type(e), e, e.__traceback__),
             )
+            context.set_failed()
             exit(EXIT_ERROR)
         except Exception as e:
             e_str = str(e)
             if "Failed to allocate memory" in e_str or "out of memory" in e_str:
                 logger.error("detected out-of-memory error, exiting: %s", e)
+                context.set_failed()
                 exit(EXIT_MEMORY)
             else:
                 logger.exception(
                     "error while running job",
                 )
+                context.set_failed()
+                # carry on

gui/src/client/api.ts

@@ -175,6 +175,8 @@ export interface ImageResponse {
  * Status response from the ready endpoint.
  */
 export interface ReadyResponse {
+  cancel: boolean;
+  error: boolean;
   progress: number;
   ready: boolean;
 }