adds to raise exception to main caller thread from prefetch generator

labelbox/data/generator.py

@@ -33,25 +33,30 @@ class PrefetchGenerator:
     Useful for modifying the generator results based on data from a network
     """
 
-    def __init__(self, data: Iterable[Any], prefetch_limit=20, num_executors=4):
+    def __init__(self, data: Iterable[Any], prefetch_limit=20, num_executors=1):
         if isinstance(data, (list, tuple)):
             self._data = (r for r in data)
         else:
             self._data = data
 
         self.queue = Queue(prefetch_limit)
-        self._data = ThreadSafeGen(self._data)
         self.completed_threads = 0
         # Can only iterate over once it the queue.get hangs forever.
+        self.multithread = num_executors > 1
         self.done = False
-        self.num_executors = num_executors
-        self.threads = [
-            threading.Thread(target=self.fill_queue)
-            for _ in range(num_executors)
-        ]
-        for thread in self.threads:
-            thread.daemon = True
-            thread.start()
+
+        if self.multithread:
+            self._data = ThreadSafeGen(self._data)
+            self.num_executors = num_executors
+            self.threads = [
+                threading.Thread(target=self.fill_queue)
+                for _ in range(num_executors)
+            ]
+            for thread in self.threads:
+                thread.daemon = True
+                thread.start()
+        else:
+            self._data = iter(self._data)
 
     def _process(self, value) -> Any:
         raise NotImplementedError("Abstract method needs to be implemented")
@@ -64,8 +69,8 @@ def fill_queue(self):
                     raise ValueError("Unexpected None")
                 self.queue.put(value)
         except Exception as e:
-            logger.warning("Unexpected exception while filling the queue. %r",
-                           e)
+            self.queue.put(
+                ValueError(f"Unexpected exception while filling queue: {e}"))
         finally:
             self.queue.put(None)
 
@@ -75,13 +80,20 @@ def __iter__(self):
     def __next__(self) -> Any:
         if self.done:
             raise StopIteration
-        value = self.queue.get()
-        while value is None:
-            self.completed_threads += 1
-            if self.completed_threads == self.num_executors:
-                self.done = True
-                for thread in self.threads:
-                    thread.join()
-                raise StopIteration
+
+        if self.multithread:
             value = self.queue.get()
+
+            while value is None:
+                self.completed_threads += 1
+                if self.completed_threads == self.num_executors:
+                    self.done = True
+                    for thread in self.threads:
+                        thread.join()
+                    raise StopIteration
+                value = self.queue.get()
+            if isinstance(value, Exception):
+                raise value
+        else:
+            value = self._process(next(self._data))
         return value

labelbox/data/serialization/coco/panoptic_dataset.py

@@ -131,7 +131,7 @@ def from_common(cls,
 
         for result in results:
             images.append(result[0])
-            all_coco_annotations.extend(result[1])
+            all_coco_annotations.append(result[1])
             coco_categories.update(result[2])
             coco_things.update(result[3])
 
@@ -175,12 +175,12 @@ def to_common(self, image_root: Path, mask_root: Path):
                 raise ValueError(
                     f"Cannot find file {im_path}. Make sure `image_root` is set properly"
                 )
-
-            if not annotation.file_name.endswith('.png'):
+            if not str(annotation.file_name).endswith('.png'):
                 raise ValueError(
                     f"COCO masks must be stored as png files and their extension must be `.png`. Found {annotation.file_name}"
                 )
-            mask = MaskData(file_path=Path(mask_root, annotation.file_name))
+            mask = MaskData(
+                file_path=str(Path(mask_root, annotation.file_name)))
 
             for segmentation in annotation.segments_info:
                 category = category_lookup[segmentation.category_id]
@@ -189,6 +189,6 @@ def to_common(self, image_root: Path, mask_root: Path):
                                      value=Mask(mask=mask,
                                                 color=id_to_rgb(
                                                     segmentation.id))))
-            data = ImageData(file_path=im_path)
+            data = ImageData(file_path=str(im_path))
             yield Label(data=data, annotations=annotations)
             del annotation_lookup[image.id]

labelbox/exceptions.py

@@ -122,4 +122,4 @@ class MALValidationError(LabelboxError):
 
 class OperationNotAllowedException(Exception):
     """Raised when user does not have permissions to a resource or has exceeded usage limit"""
-    pass
+    pass

tests/data/assets/labelbox_v1/unkown_media_type_export.json

@@ -1 +1,153 @@
-[{"ID": "ckw3ce1mc78b50zc30dqf0qhj", "DataRow ID": "ckw3cctc41uqg0zo5023e59hn", "Labeled Data": "https://storage.labelbox.com/ckk4q1vgapsau07324awnsjq2%2F8821d3e2-9059-b616-9d4a-9723da3ea073-im1?Expires=1638367029433&KeyName=labelbox-assets-key-3&Signature=FPOQz-alx3gHMK30ib1iPqJj0W0", "Label": {"objects": [{"featureId": "ckw3ce58u00003e66w9rh0onm", "schemaId": "ckw3cdy207b6t0zbn3sh52xoh", "color": "#1CE6FF", "title": "obj", "value": "obj", "polygon": [{"x": 99.405, "y": 56.15}, {"x": 111.421, "y": 99.129}, {"x": 146.082, "y": 80.413}, {"x": 118.815, "y": 47.369}], "instanceURI": "https://api.labelbox.com/masks/feature/ckw3ce58u00003e66w9rh0onm?token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VySWQiOiJja2s0cTF2Z3djMHZwMDcwNHhoeDdtNHZrIiwib3JnYW5pemF0aW9uSWQiOiJja2s0cTF2Z2Fwc2F1MDczMjRhd25zanEyIiwiaWF0IjoxNjM3MTU3NDI5LCJleHAiOjE2Mzk3NDk0Mjl9.L4PvjcpSIWV_9R5_M7c_24sj79wtserE_2hkx3ZeCMU"}], "classifications": [], "relationships": []}, "Created By": "msokoloff@labelbox.com", "Project Name": "test", "Created At": "2021-11-17T09:48:56.000Z", "Updated At": "2021-11-17T09:48:56.305Z", "Seconds to Label": 2.239, "External ID": "im1", "Agreement": -1, "Benchmark Agreement": -1, "Benchmark ID": null, "Dataset Name": "no-name", "Reviews": [], "View Label": "https://editor.labelbox.com?project=ckw3cd90b38br0zd4dh4n1xou&label=ckw3ce1mc78b50zc30dqf0qhj", "Has Open Issues": 0, "Skipped": false}, {"ID": "ckw3cea3f7b9t0zbn2tgp2y83", "DataRow ID": "ckw3cctc41uqo0zo5gpma1mr2", "Labeled Data": "https://storage.labelbox.com/ckk4q1vgapsau07324awnsjq2%2F1bc65970-9880-78b4-d298-7a7ef7f8f3fc-im3?Expires=1638367029433&KeyName=labelbox-assets-key-3&Signature=GZUsyQqYYlQPWBYv7GApFYlHXAc", "Label": {"objects": [], "classifications": [{"featureId": "ckw3ced5e00023e66236meh70", "schemaId": "ckw3cdy207b6v0zbn11gp0zz4", "title": "classification", "value": "classification", "answer": {"featureId": "ckw3ced5e00013e6652355ejd", "schemaId": "ckw3cdy207b6w0zbn2hgp3321", "title": "op1", "value": "op_1"}}], "relationships": []}, "Created By": "msokoloff@labelbox.com", "Project Name": "test", "Created At": "2021-11-17T09:49:02.000Z", "Updated At": "2021-11-17T09:49:02.220Z", "Seconds to Label": 5.373, "External ID": "im3", "Agreement": -1, "Benchmark Agreement": -1, "Benchmark ID": null, "Dataset Name": "no-name", "Reviews": [], "View Label": "https://editor.labelbox.com?project=ckw3cd90b38br0zd4dh4n1xou&label=ckw3cea3f7b9t0zbn2tgp2y83", "Has Open Issues": 0, "Skipped": false}, {"ID": "ckw3cec4v78ex0zc3aodwdekw", "DataRow ID": "ckw3cctc41uqs0zo52cy6eus1", "Labeled Data": "https://storage.labelbox.com/ckk4q1vgapsau07324awnsjq2%2Fdb42c0e8-e005-3305-ed35-b021f109b6a7-im4?Expires=1638367029433&KeyName=labelbox-assets-key-3&Signature=Hms9mqcIyWNDzoJUdvMa6_hRKY4", "Label": {"objects": [{"featureId": "ckw3cefl900033e66k41q6zpc", "schemaId": "ckw3cdy207b6t0zbn3sh52xoh", "color": "#1CE6FF", "title": "obj", "value": "obj", "polygon": [{"x": 69.58, "y": 42.292}, {"x": 64.932, "y": 74.128}, {"x": 91.888, "y": 64.601}, {"x": 86.775, "y": 41.828}], "instanceURI": "https://api.labelbox.com/masks/feature/ckw3cefl900033e66k41q6zpc?token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VySWQiOiJja2s0cTF2Z3djMHZwMDcwNHhoeDdtNHZrIiwib3JnYW5pemF0aW9uSWQiOiJja2s0cTF2Z2Fwc2F1MDczMjRhd25zanEyIiwiaWF0IjoxNjM3MTU3NDI5LCJleHAiOjE2Mzk3NDk0Mjl9.L4PvjcpSIWV_9R5_M7c_24sj79wtserE_2hkx3ZeCMU"}], "classifications": [{"featureId": "ckw3ceijf00053e669zaplftd", "schemaId": "ckw3cdy207b6v0zbn11gp0zz4", "title": "classification", "value": "classification", "answer": {"featureId": "ckw3ceijf00043e665ex22xkp", "schemaId": "ckw3cdy207b6y0zbn77201rux", "title": "op2", "value": "op_2"}}], "relationships": []}, "Created By": "msokoloff@labelbox.com", "Project Name": "test", "Created At": "2021-11-17T09:49:15.000Z", "Updated At": "2021-11-17T09:49:15.785Z", "Seconds to Label": 5, "External ID": "im4", "Agreement": -1, "Benchmark Agreement": -1, "Benchmark ID": null, "Dataset Name": "no-name", "Reviews": [], "View Label": "https://editor.labelbox.com?project=ckw3cd90b38br0zd4dh4n1xou&label=ckw3cec4v78ex0zc3aodwdekw", "Has Open Issues": 0, "Skipped": false}, {"ID": "ckw3ce1s34c1i0zbp32067q4v", "DataRow ID": "ckw3cctc41uqk0zo52n31egs1", "Labeled Data": "https://storage.labelbox.com/ckk4q1vgapsau07324awnsjq2%2F402cbd62-9127-5b50-57d6-d77aaf89f643-im2?Expires=1638367029433&KeyName=labelbox-assets-key-3&Signature=QIwHFUXN1mjBn8K4ZLWVQGQekmE", "Label": {}, "Created By": "msokoloff@labelbox.com", "Project Name": "test", "Created At": "2021-11-17T09:48:59.000Z", "Updated At": "2021-11-17T09:49:02.000Z", "Seconds to Label": 3.524, "External ID": "im2", "Agreement": -1, "Benchmark Agreement": -1, "Benchmark ID": null, "Dataset Name": "no-name", "Reviews": [], "View Label": "https://editor.labelbox.com?project=ckw3cd90b38br0zd4dh4n1xou&label=ckw3ce1s34c1i0zbp32067q4v", "Has Open Issues": 0, "Skipped": true}]
+[{
+    "ID": "ckw3ce1mc78b50zc30dqf0qhj",
+    "DataRow ID": "ckw3cctc41uqg0zo5023e59hn",
+    "Labeled Data": "https://storage.labelbox.com/ckk4q1vgapsau07324awnsjq2%2F8821d3e2-9059-b616-9d4a-9723da3ea073-im1?Expires=1638367029433&KeyName=labelbox-assets-key-3&Signature=FPOQz-alx3gHMK30ib1iPqJj0W0",
+    "Label": {
+        "objects": [{
+            "featureId": "ckw3ce58u00003e66w9rh0onm",
+            "schemaId": "ckw3cdy207b6t0zbn3sh52xoh",
+            "color": "#1CE6FF",
+            "title": "obj",
+            "value": "obj",
+            "polygon": [{
+                "x": 99.405,
+                "y": 56.15
+            }, {
+                "x": 111.421,
+                "y": 99.129
+            }, {
+                "x": 146.082,
+                "y": 80.413
+            }, {
+                "x": 118.815,
+                "y": 47.369
+            }],
+            "instanceURI": "https://api.labelbox.com/masks/feature/ckw3ce58u00003e66w9rh0onm?token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VySWQiOiJja2s0cTF2Z3djMHZwMDcwNHhoeDdtNHZrIiwib3JnYW5pemF0aW9uSWQiOiJja2s0cTF2Z2Fwc2F1MDczMjRhd25zanEyIiwiaWF0IjoxNjM3MTU3NDI5LCJleHAiOjE2Mzk3NDk0Mjl9.L4PvjcpSIWV_9R5_M7c_24sj79wtserE_2hkx3ZeCMU"
+        }],
+        "classifications": [],
+        "relationships": []
+    },
+    "Created By": "msokoloff@labelbox.com",
+    "Project Name": "test",
+    "Created At": "2021-11-17T09:48:56.000Z",
+    "Updated At": "2021-11-17T09:48:56.305Z",
+    "Seconds to Label": 2.239,
+    "External ID": "im1",
+    "Agreement": -1,
+    "Benchmark Agreement": -1,
+    "Benchmark ID": null,
+    "Dataset Name": "no-name",
+    "Reviews": [],
+    "View Label": "https://editor.labelbox.com?project=ckw3cd90b38br0zd4dh4n1xou&label=ckw3ce1mc78b50zc30dqf0qhj",
+    "Has Open Issues": 0,
+    "Skipped": false
+}, {
+    "ID": "ckw3cea3f7b9t0zbn2tgp2y83",
+    "DataRow ID": "ckw3cctc41uqo0zo5gpma1mr2",
+    "Labeled Data": "https://storage.labelbox.com/ckk4q1vgapsau07324awnsjq2%2F1bc65970-9880-78b4-d298-7a7ef7f8f3fc-im3?Expires=1638367029433&KeyName=labelbox-assets-key-3&Signature=GZUsyQqYYlQPWBYv7GApFYlHXAc",
+    "media_type": "image",
+    "Label": {
+        "objects": [],
+        "classifications": [{
+            "featureId": "ckw3ced5e00023e66236meh70",
+            "schemaId": "ckw3cdy207b6v0zbn11gp0zz4",
+            "title": "classification",
+            "value": "classification",
+            "answer": {
+                "featureId": "ckw3ced5e00013e6652355ejd",
+                "schemaId": "ckw3cdy207b6w0zbn2hgp3321",
+                "title": "op1",
+                "value": "op_1"
+            }
+        }],
+        "relationships": []
+    },
+    "Created By": "msokoloff@labelbox.com",
+    "Project Name": "test",
+    "Created At": "2021-11-17T09:49:02.000Z",
+    "Updated At": "2021-11-17T09:49:02.220Z",
+    "Seconds to Label": 5.373,
+    "External ID": "im3",
+    "Agreement": -1,
+    "Benchmark Agreement": -1,
+    "Benchmark ID": null,
+    "Dataset Name": "no-name",
+    "Reviews": [],
+    "View Label": "https://editor.labelbox.com?project=ckw3cd90b38br0zd4dh4n1xou&label=ckw3cea3f7b9t0zbn2tgp2y83",
+    "Has Open Issues": 0,
+    "Skipped": false
+}, {
+    "ID": "ckw3cec4v78ex0zc3aodwdekw",
+    "DataRow ID": "ckw3cctc41uqs0zo52cy6eus1",
+    "Labeled Data": "https://storage.labelbox.com/ckk4q1vgapsau07324awnsjq2%2Fdb42c0e8-e005-3305-ed35-b021f109b6a7-im4?Expires=1638367029433&KeyName=labelbox-assets-key-3&Signature=Hms9mqcIyWNDzoJUdvMa6_hRKY4",
+    "Label": {
+        "objects": [{
+            "featureId": "ckw3cefl900033e66k41q6zpc",
+            "schemaId": "ckw3cdy207b6t0zbn3sh52xoh",
+            "color": "#1CE6FF",
+            "title": "obj",
+            "value": "obj",
+            "polygon": [{
+                "x": 69.58,
+                "y": 42.292
+            }, {
+                "x": 64.932,
+                "y": 74.128
+            }, {
+                "x": 91.888,
+                "y": 64.601
+            }, {
+                "x": 86.775,
+                "y": 41.828
+            }],
+            "instanceURI": "https://api.labelbox.com/masks/feature/ckw3cefl900033e66k41q6zpc?token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VySWQiOiJja2s0cTF2Z3djMHZwMDcwNHhoeDdtNHZrIiwib3JnYW5pemF0aW9uSWQiOiJja2s0cTF2Z2Fwc2F1MDczMjRhd25zanEyIiwiaWF0IjoxNjM3MTU3NDI5LCJleHAiOjE2Mzk3NDk0Mjl9.L4PvjcpSIWV_9R5_M7c_24sj79wtserE_2hkx3ZeCMU"
+        }],
+        "classifications": [{
+            "featureId": "ckw3ceijf00053e669zaplftd",
+            "schemaId": "ckw3cdy207b6v0zbn11gp0zz4",
+            "title": "classification",
+            "value": "classification",
+            "answer": {
+                "featureId": "ckw3ceijf00043e665ex22xkp",
+                "schemaId": "ckw3cdy207b6y0zbn77201rux",
+                "title": "op2",
+                "value": "op_2"
+            }
+        }],
+        "relationships": []
+    },
+    "Created By": "msokoloff@labelbox.com",
+    "Project Name": "test",
+    "Created At": "2021-11-17T09:49:15.000Z",
+    "Updated At": "2021-11-17T09:49:15.785Z",
+    "Seconds to Label": 5,
+    "External ID": "im4",
+    "Agreement": -1,
+    "Benchmark Agreement": -1,
+    "Benchmark ID": null,
+    "Dataset Name": "no-name",
+    "Reviews": [],
+    "View Label": "https://editor.labelbox.com?project=ckw3cd90b38br0zd4dh4n1xou&label=ckw3cec4v78ex0zc3aodwdekw",
+    "Has Open Issues": 0,
+    "Skipped": false
+}, {
+    "ID": "ckw3ce1s34c1i0zbp32067q4v",
+    "DataRow ID": "ckw3cctc41uqk0zo52n31egs1",
+    "Labeled Data": "https://storage.labelbox.com/ckk4q1vgapsau07324awnsjq2%2F402cbd62-9127-5b50-57d6-d77aaf89f643-im2?Expires=1638367029433&KeyName=labelbox-assets-key-3&Signature=QIwHFUXN1mjBn8K4ZLWVQGQekmE",
+    "media_type": "image",
+    "Label": {},
+    "Created By": "msokoloff@labelbox.com",
+    "Project Name": "test",
+    "Created At": "2021-11-17T09:48:59.000Z",
+    "Updated At": "2021-11-17T09:49:02.000Z",
+    "Seconds to Label": 3.524,
+    "External ID": "im2",
+    "Agreement": -1,
+    "Benchmark Agreement": -1,
+    "Benchmark ID": null,
+    "Dataset Name": "no-name",
+    "Reviews": [],
+    "View Label": "https://editor.labelbox.com?project=ckw3cd90b38br0zd4dh4n1xou&label=ckw3ce1s34c1i0zbp32067q4v",
+    "Has Open Issues": 0,
+    "Skipped": true
+}]

tests/data/metrics/confusion_matrix/test_confusion_matrix_data_row.py

@@ -1,10 +1,10 @@
 from pytest_cases import fixture_ref
-from pytest_cases import pytest_parametrize_plus, fixture_ref
+from pytest_cases import parametrize, fixture_ref
 
 from labelbox.data.metrics.confusion_matrix.confusion_matrix import confusion_matrix_metric
 
 
-@pytest_parametrize_plus("tool_examples", [
+@parametrize("tool_examples", [
     fixture_ref('polygon_pairs'),
     fixture_ref('rectangle_pairs'),
     fixture_ref('mask_pairs'),
@@ -27,10 +27,9 @@ def test_overlapping_objects(tool_examples):
                 expected), f"{example.predictions},{example.ground_truths}"
 
 
-@pytest_parametrize_plus(
-    "tool_examples",
-    [fixture_ref('checklist_pairs'),
-     fixture_ref('radio_pairs')])
+@parametrize("tool_examples",
+             [fixture_ref('checklist_pairs'),
+              fixture_ref('radio_pairs')])
 def test_overlapping_classifications(tool_examples):
     for example in tool_examples:
         score = confusion_matrix_metric(example.ground_truths,

tests/data/metrics/confusion_matrix/test_confusion_matrix_feature.py

@@ -1,10 +1,10 @@
 from pytest_cases import fixture_ref
-from pytest_cases import pytest_parametrize_plus, fixture_ref
+from pytest_cases import parametrize, fixture_ref
 
 from labelbox.data.metrics.confusion_matrix.confusion_matrix import feature_confusion_matrix_metric
 
 
-@pytest_parametrize_plus("tool_examples", [
+@parametrize("tool_examples", [
     fixture_ref('polygon_pairs'),
     fixture_ref('rectangle_pairs'),
     fixture_ref('mask_pairs'),
@@ -23,10 +23,9 @@ def test_overlapping_objects(tool_examples):
             assert metrics == example.expected, f"{example.predictions},{example.ground_truths}"
 
 
-@pytest_parametrize_plus(
-    "tool_examples",
-    [fixture_ref('checklist_pairs'),
-     fixture_ref('radio_pairs')])
+@parametrize("tool_examples",
+             [fixture_ref('checklist_pairs'),
+              fixture_ref('radio_pairs')])
 def test_overlapping_classifications(tool_examples):
     for example in tool_examples:
 

tests/data/test_prefetch_generator.py

@@ -0,0 +1,34 @@
+import pytest
+from labelbox.data.generator import PrefetchGenerator
+from random import random
+
+
+class ChildClassGenerator(PrefetchGenerator):
+
+    def __init__(self, examples, num_executors=1):
+        super().__init__(data=examples, num_executors=num_executors)
+
+    def _process(self, value):
+        num = random()
+        if num < .2:
+            raise ValueError("Randomized value error")
+        return value
+
+
+amount = (i for i in range(50))
+
+
+def test_single_thread_generator():
+    generator = ChildClassGenerator(amount, num_executors=1)
+
+    with pytest.raises(ValueError):
+        for _ in range(51):
+            next(generator)
+
+
+def test_multi_thread_generator():
+    generator = ChildClassGenerator(amount, num_executors=4)
+
+    with pytest.raises(ValueError):
+        for _ in range(51):
+            next(generator)