[2.5] Add TF based TBAnalyticsReceiver (#3035)

* Remove TBReceiver from tf job api

* Add tf based receiver

nvflare/app_opt/tf/job_config/base_fed_job.py

@@ -23,7 +23,7 @@
 from nvflare.app_common.widgets.streaming import AnalyticsReceiver
 from nvflare.app_common.widgets.validation_json_generator import ValidationJsonGenerator
 from nvflare.app_opt.tf.job_config.model import TFModel
-from nvflare.app_opt.tracking.tb.tb_receiver import TBAnalyticsReceiver
+from nvflare.app_opt.tf.tb_receiver import TBAnalyticsReceiver
 from nvflare.job_config.api import FedJob, validate_object_for_job
 
 

nvflare/app_opt/tf/tb_receiver.py

@@ -0,0 +1,146 @@
+# Copyright (c) 2024, NVIDIA CORPORATION.  All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+from typing import List, Optional
+
+import tensorflow as tf
+
+from nvflare.apis.analytix import AnalyticsData, AnalyticsDataType
+from nvflare.apis.dxo import from_shareable
+from nvflare.apis.fl_context import FLContext
+from nvflare.apis.shareable import Shareable
+from nvflare.app_common.widgets.streaming import AnalyticsReceiver
+
+
+def _create_new_data(key, value, sender):
+    if isinstance(value, (int, float)):
+        data_type = AnalyticsDataType.SCALAR
+    elif isinstance(value, str):
+        data_type = AnalyticsDataType.TEXT
+    else:
+        return None
+
+    return AnalyticsData(key=key, value=value, data_type=data_type, sender=sender)
+
+
+class TBAnalyticsReceiver(AnalyticsReceiver):
+    def __init__(self, tb_folder="tb_events", events: Optional[List[str]] = None):
+        """Receives analytics data to save to TensorBoard.
+
+        Args:
+            tb_folder (str): the folder to store tensorboard files.
+            events (optional, List[str]): A list of events to be handled by this receiver.
+
+        .. code-block:: text
+            :caption: Folder structure
+
+            Inside run_XX folder:
+              - workspace
+                - run_01 (already created):
+                  - output_dir (default: tb_events):
+                    - peer_name_1:
+                    - peer_name_2:
+
+                - run_02 (already created):
+                  - output_dir (default: tb_events):
+                    - peer_name_1:
+                    - peer_name_2:
+
+        """
+        super().__init__(events=events)
+        self.writers_table = {}
+        self.tb_folder = tb_folder
+        self.root_log_dir = None
+
+    def initialize(self, fl_ctx: FLContext):
+        workspace = fl_ctx.get_engine().get_workspace()
+        run_dir = workspace.get_run_dir(fl_ctx.get_job_id())
+        root_log_dir = os.path.join(run_dir, self.tb_folder)
+        os.makedirs(root_log_dir, exist_ok=True)
+        self.root_log_dir = root_log_dir
+        self.log_info(
+            fl_ctx,
+            f"Tensorboard records can be found in {self.root_log_dir} you can view it using `tensorboard --logdir={self.root_log_dir}`",
+        )
+
+    def _convert_to_records(self, analytic_data: AnalyticsData, fl_ctx: FLContext) -> List[AnalyticsData]:
+        # break dict of stuff to smaller items to support
+        # AnalyticsDataType.PARAMETER and AnalyticsDataType.PARAMETERS
+        records = []
+
+        if analytic_data.data_type in (AnalyticsDataType.PARAMETER, AnalyticsDataType.PARAMETERS):
+            items = (
+                analytic_data.value.items()
+                if analytic_data.data_type == AnalyticsDataType.PARAMETERS
+                else [(analytic_data.tag, analytic_data.value)]
+            )
+            for k, v in items:
+                new_data = _create_new_data(k, v, analytic_data.sender)
+                if new_data is None:
+                    self.log_warning(fl_ctx, f"Entry {k} of type {type(v)} is not supported.", fire_event=False)
+                else:
+                    records.append(new_data)
+        elif analytic_data.data_type in (AnalyticsDataType.SCALARS, AnalyticsDataType.METRICS):
+            data_type = (
+                AnalyticsDataType.SCALAR
+                if analytic_data.data_type == AnalyticsDataType.SCALARS
+                else AnalyticsDataType.METRIC
+            )
+            records.extend(
+                AnalyticsData(key=k, value=v, data_type=data_type, sender=analytic_data.sender)
+                for k, v in analytic_data.value.items()
+            )
+        else:
+            records.append(analytic_data)
+
+        return records
+
+    def save(self, fl_ctx: FLContext, shareable: Shareable, record_origin):
+        dxo = from_shareable(shareable)
+        analytic_data = AnalyticsData.from_dxo(dxo)
+        if not analytic_data:
+            return
+
+        writer = self.writers_table.get(record_origin)
+        if writer is None:
+            peer_log_dir = os.path.join(self.root_log_dir, record_origin)
+            writer = tf.summary.create_file_writer(peer_log_dir)
+            self.writers_table[record_origin] = writer
+
+        # do different things depending on the type in dxo
+        self.log_info(
+            fl_ctx,
+            f"try to save data {analytic_data} from {record_origin}",
+            fire_event=False,
+        )
+
+        data_records = self._convert_to_records(analytic_data, fl_ctx)
+
+        with writer.as_default():
+            for data_record in data_records:
+                if data_record.data_type in (AnalyticsDataType.METRIC, AnalyticsDataType.SCALAR):
+                    tf.summary.scalar(data_record.tag, data_record.value, data_record.step)
+                elif data_record.data_type == AnalyticsDataType.TEXT:
+                    tf.summary.text(data_record.tag, data_record.value, data_record.step)
+                elif data_record.data_type == AnalyticsDataType.IMAGE:
+                    tf.summary.image(data_record.tag, data_record.value, data_record.step)
+                else:
+                    self.log_warning(
+                        fl_ctx, f"The data_type {data_record.data_type} is not supported.", fire_event=False
+                    )
+
+    def finalize(self, fl_ctx: FLContext):
+        for writer in self.writers_table.values():
+            tf.summary.flush(writer)