Add initial Tensorflow v2 support (2.0.0rc1)

examples/tensorflow_v2_mnist.py

@@ -0,0 +1,130 @@
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+import tensorflow as tf
+
+from tensorflow.keras.layers import Dense, Flatten, Conv2D
+from tensorflow.keras import Model
+
+from trains import Task
+
+
+task = Task.init(project_name='examples',
+                 task_name='Tensorflow v2 mnist with summaries')
+
+
+# Load and prepare the MNIST dataset.
+mnist = tf.keras.datasets.mnist
+
+(x_train, y_train), (x_test, y_test) = mnist.load_data()
+x_train, x_test = x_train / 255.0, x_test / 255.0
+
+# Add a channels dimension
+x_train = x_train[..., tf.newaxis]
+x_test = x_test[..., tf.newaxis]
+
+# Use tf.data to batch and shuffle the dataset
+train_ds = tf.data.Dataset.from_tensor_slices((x_train, y_train)).shuffle(10000).batch(32)
+test_ds = tf.data.Dataset.from_tensor_slices((x_test, y_test)).batch(32)
+
+
+# Build the tf.keras model using the Keras model subclassing API
+class MyModel(Model):
+    def __init__(self):
+        super(MyModel, self).__init__()
+        self.conv1 = Conv2D(32, 3, activation='relu')
+        self.flatten = Flatten()
+        self.d1 = Dense(128, activation='relu')
+        self.d2 = Dense(10, activation='softmax')
+
+    def call(self, x):
+        x = self.conv1(x)
+        x = self.flatten(x)
+        x = self.d1(x)
+        return self.d2(x)
+
+
+# Create an instance of the model
+model = MyModel()
+
+# Choose an optimizer and loss function for training
+loss_object = tf.keras.losses.SparseCategoricalCrossentropy()
+optimizer = tf.keras.optimizers.Adam()
+
+# Select metrics to measure the loss and the accuracy of the model.
+# These metrics accumulate the values over epochs and then print the overall result.
+train_loss = tf.keras.metrics.Mean(name='train_loss', dtype=tf.float32)
+train_accuracy = tf.keras.metrics.SparseCategoricalAccuracy(name='train_accuracy')
+
+test_loss = tf.keras.metrics.Mean(name='test_loss', dtype=tf.float32)
+test_accuracy = tf.keras.metrics.SparseCategoricalAccuracy(name='test_accuracy')
+
+# Use tf.GradientTape to train the model
+@tf.function
+def train_step(images, labels):
+    with tf.GradientTape() as tape:
+        predictions = model(images)
+        loss = loss_object(labels, predictions)
+    gradients = tape.gradient(loss, model.trainable_variables)
+    optimizer.apply_gradients(zip(gradients, model.trainable_variables))
+
+    train_loss(loss)
+    train_accuracy(labels, predictions)
+
+
+# Test the model
+@tf.function
+def test_step(images, labels):
+    predictions = model(images)
+    t_loss = loss_object(labels, predictions)
+
+    test_loss(t_loss)
+    test_accuracy(labels, predictions)
+
+
+# Set up summary writers to write the summaries to disk in a different logs directory
+train_log_dir = '/tmp/logs/gradient_tape/train'
+test_log_dir = '/tmp/logs/gradient_tape/test'
+train_summary_writer = tf.summary.create_file_writer(train_log_dir)
+test_summary_writer = tf.summary.create_file_writer(test_log_dir)
+
+# Set up checkpoints manager
+ckpt = tf.train.Checkpoint(step=tf.Variable(1), optimizer=optimizer, net=model)
+manager = tf.train.CheckpointManager(ckpt, '/tmp/tf_ckpts', max_to_keep=3)
+ckpt.restore(manager.latest_checkpoint)
+if manager.latest_checkpoint:
+    print("Restored from {}".format(manager.latest_checkpoint))
+else:
+    print("Initializing from scratch.")
+
+# Start training
+EPOCHS = 5
+for epoch in range(EPOCHS):
+    for images, labels in train_ds:
+        train_step(images, labels)
+        with train_summary_writer.as_default():
+            tf.summary.scalar('loss', train_loss.result(), step=epoch)
+            tf.summary.scalar('accuracy', train_accuracy.result(), step=epoch)
+
+    ckpt.step.assign_add(1)
+    if int(ckpt.step) % 1 == 0:
+        save_path = manager.save()
+        print("Saved checkpoint for step {}: {}".format(int(ckpt.step), save_path))
+
+    for test_images, test_labels in test_ds:
+        test_step(test_images, test_labels)
+        with test_summary_writer.as_default():
+            tf.summary.scalar('loss', test_loss.result(), step=epoch)
+            tf.summary.scalar('accuracy', test_accuracy.result(), step=epoch)
+
+    template = 'Epoch {}, Loss: {}, Accuracy: {}, Test Loss: {}, Test Accuracy: {}'
+    print(template.format(epoch+1,
+                          train_loss.result(),
+                          train_accuracy.result()*100,
+                          test_loss.result(),
+                          test_accuracy.result()*100))
+
+    # Reset the metrics for the next epoch
+    train_loss.reset_states()
+    train_accuracy.reset_states()
+    test_loss.reset_states()
+    test_accuracy.reset_states()

trains/binding/frameworks/tensorflow_bind.py

@@ -8,6 +8,7 @@ from io import BytesIO
 from typing import Any
 
 import numpy as np
+import six
 from PIL import Image
 
 from ...debugging.log import LoggerRoot
@@ -22,6 +23,16 @@ except ImportError:
     MessageToDict = None
 
 
+class TensorflowBinding(object):
+    @classmethod
+    def update_current_task(cls, task):
+        PatchSummaryToEventTransformer.update_current_task(task)
+        PatchTensorFlowEager.update_current_task(task)
+        PatchKerasModelIO.update_current_task(task)
+        PatchTensorflowModelIO.update_current_task(task)
+        PatchTensorflow2ModelIO.update_current_task(task)
+
+
 class IsTensorboardInit(object):
     _tensorboard_initialized = False
 
@@ -156,6 +167,7 @@ class EventTrainsWriter(object):
         self.image_report_freq = image_report_freq if image_report_freq else report_freq
         self.histogram_granularity = histogram_granularity
         self.histogram_update_freq_multiplier = histogram_update_freq_multiplier
+        self._histogram_update_call_counter = 0
         self._logger = logger
         self._visualization_mode = 'RGB'  # 'BGR'
         self._variants = defaultdict(lambda: ())
@@ -168,12 +180,18 @@ class EventTrainsWriter(object):
     def _decode_image(self, img_str, width, height, color_channels):
         # noinspection PyBroadException
         try:
-            imdata = base64.b64decode(img_str)
+            if isinstance(img_str, bytes):
+                imdata = img_str
+            else:
+                imdata = base64.b64decode(img_str)
             output = BytesIO(imdata)
             im = Image.open(output)
             image = np.asarray(im)
             output.close()
-            val = image.reshape(height, width, -1).astype(np.uint8)
+            if height > 0 and width > 0:
+                val = image.reshape(height, width, -1).astype(np.uint8)
+            else:
+                val = image.astype(np.uint8)
             if val.ndim == 3 and val.shape[2] == 3:
                 if self._visualization_mode == 'BGR':
                     val = val[:, :, [2, 1, 0]]
@@ -187,7 +205,7 @@ class EventTrainsWriter(object):
                 else:
                     val = val[:, :, [0, 1, 2]]
         except Exception:
-            LoggerRoot.get_base_logger().warning('Failed decoding debug image [%d, %d, %d]'
+            LoggerRoot.get_base_logger(TensorflowBinding).warning('Failed decoding debug image [%d, %d, %d]'
                                                  % (width, height, color_channels))
             val = None
         return val
@@ -281,7 +299,9 @@ class EventTrainsWriter(object):
             return _cur_idx
 
         # only collect histogram every specific interval
-        if step % self.report_freq != 0 or step < self.report_freq - 1:
+        self._histogram_update_call_counter += 1
+        if self._histogram_update_call_counter % self.report_freq != 0 or \
+                self._histogram_update_call_counter < self.report_freq - 1:
             return None
 
         # generate forward matrix of the histograms
@@ -306,6 +326,8 @@ class EventTrainsWriter(object):
 
         # add current sample, if not already here
         hist_iters = np.append(hist_iters, step)
+        # histo_data['bucketLimit'] is the histogram bucket right side limit, meaning X axis
+        # histo_data['bucket'] is the histogram height, meaning the Y axis
         hist = np.array(list(zip(histo_data['bucketLimit'], histo_data['bucket'])), dtype=np.float32)
         hist = hist[~np.isinf(hist[:, 0]), :]
         hist_list.append(hist)
@@ -422,7 +444,7 @@ class EventTrainsWriter(object):
                 msg_dict.pop('wallTime', None)
                 keys_list = [key for key in msg_dict.keys() if len(key) > 0]
                 keys_list = ', '.join(keys_list)
-                LoggerRoot.get_base_logger().debug('event summary not found, message type unsupported: %s' % keys_list)
+                LoggerRoot.get_base_logger(TensorflowBinding).debug('event summary not found, message type unsupported: %s' % keys_list)
                 return
             value_dicts = summary.get('value')
             walltime = walltime or msg_dict.get('step')
@@ -434,19 +456,19 @@ class EventTrainsWriter(object):
                     step = int(event.step)
                 else:
                     step = 0
-                    LoggerRoot.get_base_logger().debug('Received event without step, assuming step = {}'.format(step))
+                    LoggerRoot.get_base_logger(TensorflowBinding).debug('Received event without step, assuming step = {}'.format(step))
             else:
                 step = int(step)
             self._max_step = max(self._max_step, step)
             if value_dicts is None:
-                LoggerRoot.get_base_logger().debug("Summary arrived without 'value'")
+                LoggerRoot.get_base_logger(TensorflowBinding).debug("Summary arrived without 'value'")
                 return
 
             for vdict in value_dicts:
                 tag = vdict.pop('tag', None)
                 if tag is None:
                     # we should not get here
-                    LoggerRoot.get_base_logger().debug('No tag for \'value\' existing keys %s'
+                    LoggerRoot.get_base_logger(TensorflowBinding).debug('No tag for \'value\' existing keys %s'
                                                        % ', '.join(vdict.keys()))
                     continue
                 metric, values = get_data(vdict, supported_metrics)
@@ -463,7 +485,7 @@ class EventTrainsWriter(object):
                 elif metric == 'tensor' and values.get('dtype') == 'DT_FLOAT':
                     self._add_plot(tag, step, values, vdict)
                 else:
-                    LoggerRoot.get_base_logger().debug('Event unsupported. tag = %s, vdict keys [%s]'
+                    LoggerRoot.get_base_logger(TensorflowBinding).debug('Event unsupported. tag = %s, vdict keys [%s]'
                                                        % (tag, ', '.join(vdict.keys)))
                     continue
 
@@ -594,7 +616,7 @@ class PatchSummaryToEventTransformer(object):
                     setattr(SummaryToEventTransformer, 'trains',
                             property(PatchSummaryToEventTransformer.trains_object))
             except Exception as ex:
-                LoggerRoot.get_base_logger().debug(str(ex))
+                LoggerRoot.get_base_logger(TensorflowBinding).debug(str(ex))
 
         if 'torch' in sys.modules:
             try:
@@ -608,7 +630,7 @@ class PatchSummaryToEventTransformer(object):
                 # this is a new version of TensorflowX
                 pass
             except Exception as ex:
-                LoggerRoot.get_base_logger().debug(str(ex))
+                LoggerRoot.get_base_logger(TensorflowBinding).debug(str(ex))
 
         if 'tensorboardX' in sys.modules:
             try:
@@ -624,7 +646,7 @@ class PatchSummaryToEventTransformer(object):
                 # this is a new version of TensorflowX
                 pass
             except Exception as ex:
-                LoggerRoot.get_base_logger().debug(str(ex))
+                LoggerRoot.get_base_logger(TensorflowBinding).debug(str(ex))
 
             if PatchSummaryToEventTransformer.__original_getattributeX is None:
                 try:
@@ -638,7 +660,7 @@ class PatchSummaryToEventTransformer(object):
                     # this is a new version of TensorflowX
                     pass
                 except Exception as ex:
-                    LoggerRoot.get_base_logger().debug(str(ex))
+                    LoggerRoot.get_base_logger(TensorflowBinding).debug(str(ex))
 
     @staticmethod
     def _patched_add_eventT(self, *args, **kwargs):
@@ -722,7 +744,7 @@ class _ModelAdapter(object):
         super(_ModelAdapter, self).__init__()
         super(_ModelAdapter, self).__setattr__('_model', model)
         super(_ModelAdapter, self).__setattr__('_output_model', output_model)
-        super(_ModelAdapter, self).__setattr__('_logger', LoggerRoot.get_base_logger())
+        super(_ModelAdapter, self).__setattr__('_logger', LoggerRoot.get_base_logger(TensorflowBinding))
 
     def __getattr__(self, attr):
         return getattr(self._model, attr)
@@ -805,7 +827,7 @@ class PatchModelCheckPointCallback(object):
                         property(PatchModelCheckPointCallback.trains_object))
 
         except Exception as ex:
-            LoggerRoot.get_base_logger().warning(str(ex))
+            LoggerRoot.get_base_logger(TensorflowBinding).warning(str(ex))
 
     @staticmethod
     def _patched_getattribute(self, attr):
@@ -876,6 +898,8 @@ class PatchTensorFlowEager(object):
                 gen_summary_ops.write_image_summary = PatchTensorFlowEager._write_image_summary
                 PatchTensorFlowEager.__original_fn_hist = gen_summary_ops.write_histogram_summary
                 gen_summary_ops.write_histogram_summary = PatchTensorFlowEager._write_hist_summary
+                PatchTensorFlowEager.__write_summary = gen_summary_ops.write_summary
+                gen_summary_ops.write_summary = PatchTensorFlowEager._write_summary
                 gen_summary_ops.create_summary_file_writer = partial(IsTensorboardInit._patched_tb__init__,
                                                                      gen_summary_ops.create_summary_file_writer)
                 gen_summary_ops.create_summary_db_writer = partial(IsTensorboardInit._patched_tb__init__,
@@ -883,7 +907,7 @@ class PatchTensorFlowEager(object):
             except ImportError:
                 pass
             except Exception as ex:
-                LoggerRoot.get_base_logger().debug(str(ex))
+                LoggerRoot.get_base_logger(TensorflowBinding).debug(str(ex))
 
     @staticmethod
     def _get_event_writer(writer):
@@ -903,14 +927,40 @@ class PatchTensorFlowEager(object):
     def trains_object(self):
         return PatchTensorFlowEager.__trains_event_writer
 
+    @staticmethod
+    def _write_summary(writer, step, tensor, tag, summary_metadata, name=None, **kwargs):
+        event_writer = PatchTensorFlowEager._get_event_writer(writer)
+        if event_writer:
+            try:
+                plugin_type = summary_metadata.decode()
+                if plugin_type.endswith('scalars'):
+                    event_writer._add_scalar(tag=str(tag),
+                                             step=int(step.numpy()) if not isinstance(step, int) else step,
+                                             scalar_data=tensor.numpy())
+                elif plugin_type.endswith('images'):
+                    img_data_np = tensor.numpy()
+                    PatchTensorFlowEager._add_image_event_helper(event_writer, img_data_np=img_data_np,
+                                                                 tag=tag, step=step, **kwargs)
+                elif plugin_type.endswith('histograms'):
+                    PatchTensorFlowEager._add_histogram_event_helper(
+                        event_writer, tag=str(tag), step=int(step.numpy()) if not isinstance(step, int) else step,
+                        hist_data=tensor.numpy())
+                else:
+                    pass  # print('unsupported plugin_type', plugin_type)
+            except Exception as ex:
+                pass
+        return PatchTensorFlowEager.__write_summary(writer, step, tensor, tag, summary_metadata, name, **kwargs)
+
     @staticmethod
     def _write_scalar_summary(writer, step, tag, value, name=None, **kwargs):
         event_writer = PatchTensorFlowEager._get_event_writer(writer)
         if event_writer:
             try:
-                event_writer._add_scalar(tag=str(tag), step=int(step.numpy()), scalar_data=value.numpy())
+                event_writer._add_scalar(tag=str(tag),
+                                         step=int(step.numpy()) if not isinstance(step, int) else step,
+                                         scalar_data=value.numpy())
             except Exception as ex:
-                LoggerRoot.get_base_logger().warning(str(ex))
+                LoggerRoot.get_base_logger(TensorflowBinding).warning(str(ex))
         return PatchTensorFlowEager.__original_fn_scalar(writer, step, tag, value, name, **kwargs)
 
     @staticmethod
@@ -918,9 +968,11 @@ class PatchTensorFlowEager(object):
         event_writer = PatchTensorFlowEager._get_event_writer(writer)
         if event_writer:
             try:
-                event_writer._add_histogram(tag=str(tag), step=int(step.numpy()), histo_data=values.numpy())
+                PatchTensorFlowEager._add_histogram_event_helper(
+                    event_writer, tag=str(tag), step=int(step.numpy()) if not isinstance(step, int) else step,
+                    hist_data=values.numpy())
             except Exception as ex:
-                LoggerRoot.get_base_logger().warning(str(ex))
+                LoggerRoot.get_base_logger(TensorflowBinding).warning(str(ex))
         return PatchTensorFlowEager.__original_fn_hist(writer, step, tag, values, name, **kwargs)
 
     @staticmethod
@@ -928,13 +980,45 @@ class PatchTensorFlowEager(object):
         event_writer = PatchTensorFlowEager._get_event_writer(writer)
         if event_writer:
             try:
-                event_writer._add_image_numpy(tag=str(tag), step=int(step.numpy()), img_data_np=tensor.numpy(),
+                PatchTensorFlowEager._add_image_event_helper(event_writer, img_data_np=tensor.numpy(),
-                                              max_keep_images=max_images)
+                                                             tag=tag, step=step, **kwargs)
             except Exception as ex:
-                LoggerRoot.get_base_logger().warning(str(ex))
+                LoggerRoot.get_base_logger(TensorflowBinding).warning(str(ex))
         return PatchTensorFlowEager.__original_fn_image(writer, step, tag, tensor, bad_color, max_images, name,
                                                         **kwargs)
 
+    @staticmethod
+    def _add_histogram_event_helper(event_writer, hist_data, tag, step):
+        if isinstance(hist_data, dict):
+            event_writer._add_histogram(tag=tag, step=step, histo_data=hist_data)
+            return
+
+        # prepare the dictionary, assume numpy
+        # histo_data['bucketLimit'] is the histogram bucket right side limit, meaning X axis
+        # histo_data['bucket'] is the histogram height, meaning the Y axis
+        # notice hist_data[:, 1] is the right side limit, for backwards compatibility we take the left side
+        histo_data = {'bucketLimit': hist_data[:, 0].tolist(), 'bucket': hist_data[:, 2].tolist()}
+        event_writer._add_histogram(tag=tag, step=step, histo_data=histo_data)
+
+    @staticmethod
+    def _add_image_event_helper(event_writer, img_data_np, tag, step, **kwargs):
+        if img_data_np.ndim == 1 and img_data_np.size >= 3 and \
+                (len(img_data_np[0]) < 10 and len(img_data_np[1]) < 10):
+            # this is just for making sure these are actually valid numbers
+            width = int(img_data_np[0].decode())
+            height = int(img_data_np[1].decode())
+            for i in range(2, img_data_np.size):
+                img_data = {'width': -1, 'height': -1,
+                            'colorspace': 'RGB', 'encodedImageString': img_data_np[i]}
+                image_tag = str(tag)+'/sample_{}'.format(i-2) if img_data_np.size > 3 else str(tag)
+                event_writer._add_image(tag=image_tag,
+                                        step=int(step.numpy()) if not isinstance(step, int) else step,
+                                        img_data=img_data)
+        else:
+            event_writer._add_image_numpy(tag=str(tag),
+                                          step=int(step.numpy()) if not isinstance(step, int) else step,
+                                          img_data_np=img_data_np,
+                                          max_keep_images=kwargs.get('max_images'))
 
 class PatchKerasModelIO(object):
     __main_task = None
@@ -1029,7 +1113,7 @@ class PatchKerasModelIO(object):
                 keras_saving.save_model = _patched_call(keras_saving.save_model, PatchKerasModelIO._save_model)
                 keras_saving.load_model = _patched_call(keras_saving.load_model, PatchKerasModelIO._load_model)
         except Exception as ex:
-            LoggerRoot.get_base_logger().warning(str(ex))
+            LoggerRoot.get_base_logger(TensorflowBinding).warning(str(ex))
 
     @staticmethod
     def _updated_config(original_fn, self):
@@ -1057,7 +1141,7 @@ class PatchKerasModelIO(object):
                     framework=Framework.keras,
                 )
         except Exception as ex:
-            LoggerRoot.get_base_logger().warning(str(ex))
+            LoggerRoot.get_base_logger(TensorflowBinding).warning(str(ex))
 
         return config
 
@@ -1107,7 +1191,7 @@ class PatchKerasModelIO(object):
                     return model
 
         except Exception as ex:
-            LoggerRoot.get_base_logger().warning(str(ex))
+            LoggerRoot.get_base_logger(TensorflowBinding).warning(str(ex))
 
         return self
 
@@ -1189,7 +1273,7 @@ class PatchKerasModelIO(object):
             # if anyone asks, we were here
             self.trains_out_model._processed = True
         except Exception as ex:
-            LoggerRoot.get_base_logger().warning(str(ex))
+            LoggerRoot.get_base_logger(TensorflowBinding).warning(str(ex))
 
     @staticmethod
     def _save_model(original_fn, model, filepath, *args, **kwargs):
@@ -1261,7 +1345,7 @@ class PatchTensorflowModelIO(object):
         except ImportError:
             pass
         except Exception:
-            pass  # print('Failed patching tensorflow')
+            LoggerRoot.get_base_logger(TensorflowBinding).debug('Failed patching tensorflow')
 
         # noinspection PyBroadException
         try:
@@ -1282,10 +1366,9 @@ class PatchTensorflowModelIO(object):
                 saved_model = None
             except Exception:
                 saved_model = None
-                pass  # print('Failed patching tensorflow')
+
         except Exception:
             saved_model = None
-            pass  # print('Failed patching tensorflow')
 
         if saved_model is not None:
             saved_model.save = _patched_call(saved_model.save, PatchTensorflowModelIO._save_model)
@@ -1301,7 +1384,7 @@ class PatchTensorflowModelIO(object):
         except ImportError:
             pass
         except Exception:
-            pass  # print('Failed patching tensorflow')
+            LoggerRoot.get_base_logger(TensorflowBinding).debug('Failed patching tensorflow')
 
         # noinspection PyBroadException
         try:
@@ -1313,7 +1396,7 @@ class PatchTensorflowModelIO(object):
         except ImportError:
             pass
         except Exception:
-            pass  # print('Failed patching tensorflow')
+            LoggerRoot.get_base_logger(TensorflowBinding).debug('Failed patching tensorflow')
 
         # noinspection PyBroadException
         try:
@@ -1325,7 +1408,7 @@ class PatchTensorflowModelIO(object):
         except ImportError:
             pass
         except Exception:
-            pass  # print('Failed patching tensorflow')
+            LoggerRoot.get_base_logger(TensorflowBinding).debug('Failed patching tensorflow')
 
         # noinspection PyBroadException
         try:
@@ -1349,7 +1432,7 @@ class PatchTensorflowModelIO(object):
         except ImportError:
             pass
         except Exception:
-            pass  # print('Failed patching tensorflow')
+            LoggerRoot.get_base_logger(TensorflowBinding).debug('Failed patching tensorflow')
 
     @staticmethod
     def _save(original_fn, self, sess, save_path, *args, **kwargs):
@@ -1457,3 +1540,81 @@ class PatchTensorflowModelIO(object):
                 pass
         return model
 
+
+class PatchTensorflow2ModelIO(object):
+    __main_task = None
+    __patched = None
+
+    @staticmethod
+    def update_current_task(task, **kwargs):
+        PatchTensorflow2ModelIO.__main_task = task
+        PatchTensorflow2ModelIO._patch_model_checkpoint()
+        PostImportHookPatching.add_on_import('tensorflow', PatchTensorflow2ModelIO._patch_model_checkpoint)
+
+    @staticmethod
+    def _patch_model_checkpoint():
+        if PatchTensorflow2ModelIO.__patched:
+            return
+
+        if 'tensorflow' not in sys.modules:
+            return
+
+        PatchTensorflow2ModelIO.__patched = True
+        # noinspection PyBroadException
+        try:
+            # hack: make sure tensorflow.__init__ is called
+            import tensorflow
+            from tensorflow.python.training.tracking import util
+            # noinspection PyBroadException
+            try:
+                util.TrackableSaver.save = _patched_call(util.TrackableSaver.save,
+                                                         PatchTensorflow2ModelIO._save)
+            except Exception:
+                pass
+            # noinspection PyBroadException
+            try:
+                util.TrackableSaver.restore = _patched_call(util.TrackableSaver.restore,
+                                                            PatchTensorflow2ModelIO._restore)
+            except Exception:
+                pass
+        except ImportError:
+            pass
+        except Exception:
+            LoggerRoot.get_base_logger(TensorflowBinding).debug('Failed patching tensorflow v2')
+
+    @staticmethod
+    def _save(original_fn, self, file_prefix, *args, **kwargs):
+        model = original_fn(self, file_prefix, *args, **kwargs)
+        # store output Model
+        try:
+            WeightsFileHandler.create_output_model(self, file_prefix, Framework.tensorflow,
+                                                   PatchTensorflow2ModelIO.__main_task)
+        except Exception:
+            pass
+        return model
+
+    @staticmethod
+    def _restore(original_fn, self, save_path, *args, **kwargs):
+        if PatchTensorflow2ModelIO.__main_task is None:
+            return original_fn(self, save_path, *args, **kwargs)
+
+        # Hack: disabled
+        if False and running_remotely():
+            # register/load model weights
+            try:
+                save_path = WeightsFileHandler.restore_weights_file(self, save_path, Framework.tensorflow,
+                                                                    PatchTensorflow2ModelIO.__main_task)
+            except Exception:
+                pass
+            # load model
+            return original_fn(self, save_path, *args, **kwargs)
+
+        # load model, if something is wrong, exception will be raised before we register the input model
+        model = original_fn(self, save_path, *args, **kwargs)
+        # register/load model weights
+        try:
+            WeightsFileHandler.restore_weights_file(self, save_path, Framework.tensorflow,
+                                                    PatchTensorflow2ModelIO.__main_task)
+        except Exception:
+            pass
+        return model

trains/config/default/sdk.conf

@@ -8,7 +8,7 @@
         }
 
         direct_access: [
-            # Objects matching are considered to be available for direct access, i.e. they will not eb downloaded
+            # Objects matching are considered to be available for direct access, i.e. they will not be downloaded
             # or cached, and any download request will return a direct reference.
             # Objects are specified in glob format, available for url and content_type.
             { url: "file://*" }  # file-urls are always directly referenced

trains/task.py

@@ -34,8 +34,7 @@ from .binding.absl_bind import PatchAbsl
 from .utilities.args import argparser_parseargs_called, get_argparser_last_args, \
     argparser_update_currenttask
 from .binding.frameworks.pytorch_bind import PatchPyTorchModelIO
-from .binding.frameworks.tensorflow_bind import PatchSummaryToEventTransformer, PatchTensorFlowEager, \
+from .binding.frameworks.tensorflow_bind import TensorflowBinding
-    PatchKerasModelIO, PatchTensorflowModelIO
 from .binding.frameworks.xgboost_bind import PatchXGBoostModelIO
 from .binding.matplotlib_bind import PatchedMatplotlib
 from .utilities.resource_monitor import ResourceMonitor
@@ -252,10 +251,7 @@ class Task(_Task):
                 PatchedJoblib.update_current_task(task)
                 PatchedMatplotlib.update_current_task(Task.__main_task)
                 PatchAbsl.update_current_task(Task.__main_task)
-                PatchSummaryToEventTransformer.update_current_task(task)
+                TensorflowBinding.update_current_task(task)
-                PatchTensorFlowEager.update_current_task(task)
-                PatchKerasModelIO.update_current_task(task)
-                PatchTensorflowModelIO.update_current_task(task)
                 PatchPyTorchModelIO.update_current_task(task)
                 PatchXGBoostModelIO.update_current_task(task)
             if auto_resource_monitoring:
@@ -346,7 +342,7 @@ class Task(_Task):
     def _create_dev_task(cls, default_project_name, default_task_name, default_task_type, reuse_last_task_id):
         if not default_project_name or not default_task_name:
             # get project name and task name from repository name and entry_point
-            result = ScriptInfo.get(create_requirements=False, check_uncommitted=False)
+            result, _ = ScriptInfo.get(create_requirements=False, check_uncommitted=False)
             if not default_project_name:
                 # noinspection PyBroadException
                 try:
@@ -1016,7 +1012,14 @@ class Task(_Task):
                 if self._detect_repo_async_thread:
                     try:
                         if self._detect_repo_async_thread.is_alive():
+                            self.log.info('Waiting for repository detection and full package requirement analysis')
                             self._detect_repo_async_thread.join(timeout=timeout)
+                            # because join has no return value
+                            if self._detect_repo_async_thread.is_alive():
+                                self.log.info('Repository and package analysis timed out ({} sec), '
+                                              'giving up'.format(timeout))
+                            else:
+                                self.log.info('Finished repository detection and package analysis')
                         self._detect_repo_async_thread = None
                     except Exception:
                         pass