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# Copyright 2016 The TensorFlow Authors. 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.
# ==============================================================================
"""Debugger wrapper session that dumps debug data to file:// URLs."""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import os
import threading
import time
# Google-internal import(s).
from tensorflow.core.util import event_pb2
from tensorflow.python.debug.lib import debug_data
from tensorflow.python.debug.wrappers import framework
from tensorflow.python.platform import gfile
class DumpingDebugWrapperSession(framework.NonInteractiveDebugWrapperSession):
"""Debug Session wrapper that dumps debug data to filesystem."""
def __init__(self,
sess,
session_root,
watch_fn=None,
thread_name_filter=None,
pass_through_operrors=None,
log_usage=True):
"""Constructor of DumpingDebugWrapperSession.
Args:
sess: The TensorFlow `Session` object being wrapped.
session_root: (`str`) Path to the session root directory. Must be a
directory that does not exist or an empty directory. If the directory
does not exist, it will be created by the debugger core during debug
@{tf.Session.run}
calls.
As the `run()` calls occur, subdirectories will be added to
`session_root`. The subdirectories' names has the following pattern:
run_<epoch_time_stamp>_<zero_based_run_counter>
E.g., run_1480734393835964_ad4c953a85444900ae79fc1b652fb324
watch_fn: (`Callable`) A Callable that can be used to define per-run
debug ops and watched tensors. See the doc of
`NonInteractiveDebugWrapperSession.__init__()` for details.
thread_name_filter: Regular-expression white list for threads on which the
wrapper session will be active. See doc of `BaseDebugWrapperSession` for
more details.
pass_through_operrors: If true, all captured OpErrors will be
propagated. By default this captures all OpErrors.
log_usage: (`bool`) whether the usage of this class is to be logged.
Raises:
ValueError: If `session_root` is an existing and non-empty directory or
if `session_root` is a file.
"""
if log_usage:
pass # No logging for open-source.
framework.NonInteractiveDebugWrapperSession.__init__(
self, sess, watch_fn=watch_fn, thread_name_filter=thread_name_filter,
pass_through_operrors=pass_through_operrors)
session_root = os.path.expanduser(session_root)
if gfile.Exists(session_root):
if not gfile.IsDirectory(session_root):
raise ValueError(
"session_root path points to a file: %s" % session_root)
elif gfile.ListDirectory(session_root):
raise ValueError(
"session_root path points to a non-empty directory: %s" %
session_root)
else:
gfile.MakeDirs(session_root)
self._session_root = session_root
self._run_counter = 0
self._run_counter_lock = threading.Lock()
def prepare_run_debug_urls(self, fetches, feed_dict):
"""Implementation of abstrat method in superclass.
See doc of `NonInteractiveDebugWrapperSession.prepare_run_debug_urls()`
for details. This implementation creates a run-specific subdirectory under
self._session_root and stores information regarding run `fetches` and
`feed_dict.keys()` in the subdirectory.
Args:
fetches: Same as the `fetches` argument to `Session.run()`
feed_dict: Same as the `feed_dict` argument to `Session.run()`
Returns:
debug_urls: (`str` or `list` of `str`) file:// debug URLs to be used in
this `Session.run()` call.
"""
# Add a UUID to accommodate the possibility of concurrent run() calls.
self._run_counter_lock.acquire()
run_dir = os.path.join(self._session_root, "run_%d_%d" %
(int(time.time() * 1e6), self._run_counter))
self._run_counter += 1
self._run_counter_lock.release()
gfile.MkDir(run_dir)
fetches_event = event_pb2.Event()
fetches_event.log_message.message = repr(fetches)
fetches_path = os.path.join(
run_dir,
debug_data.METADATA_FILE_PREFIX + debug_data.FETCHES_INFO_FILE_TAG)
with gfile.Open(os.path.join(fetches_path), "wb") as f:
f.write(fetches_event.SerializeToString())
feed_keys_event = event_pb2.Event()
feed_keys_event.log_message.message = (repr(feed_dict.keys()) if feed_dict
else repr(feed_dict))
feed_keys_path = os.path.join(
run_dir,
debug_data.METADATA_FILE_PREFIX + debug_data.FEED_KEYS_INFO_FILE_TAG)
with gfile.Open(os.path.join(feed_keys_path), "wb") as f:
f.write(feed_keys_event.SerializeToString())
return ["file://" + run_dir]