-
Notifications
You must be signed in to change notification settings - Fork 74k
/
writer.py
431 lines (356 loc) · 16.8 KB
/
writer.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
# 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.
# ==============================================================================
"""Provides an API for generating Event protocol buffers."""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import os.path
import time
import warnings
from tensorflow.core.framework import graph_pb2
from tensorflow.core.framework import summary_pb2
from tensorflow.core.protobuf import meta_graph_pb2
from tensorflow.core.util import event_pb2
from tensorflow.python.eager import context
from tensorflow.python.framework import meta_graph
from tensorflow.python.framework import ops
from tensorflow.python.platform import gfile
from tensorflow.python.platform import tf_logging as logging
from tensorflow.python.summary import plugin_asset
from tensorflow.python.summary.writer.event_file_writer import EventFileWriter
from tensorflow.python.summary.writer.event_file_writer_v2 import EventFileWriterV2
from tensorflow.python.util.tf_export import tf_export
_PLUGINS_DIR = "plugins"
class SummaryToEventTransformer(object):
"""Abstractly implements the SummaryWriter API.
This API basically implements a number of endpoints (add_summary,
add_session_log, etc). The endpoints all generate an event protobuf, which is
passed to the contained event_writer.
"""
def __init__(self, event_writer, graph=None, graph_def=None):
"""Creates a `SummaryWriter` and an event file.
On construction the summary writer creates a new event file in `logdir`.
This event file will contain `Event` protocol buffers constructed when you
call one of the following functions: `add_summary()`, `add_session_log()`,
`add_event()`, or `add_graph()`.
If you pass a `Graph` to the constructor it is added to
the event file. (This is equivalent to calling `add_graph()` later).
TensorBoard will pick the graph from the file and display it graphically so
you can interactively explore the graph you built. You will usually pass
the graph from the session in which you launched it:
```python
...create a graph...
# Launch the graph in a session.
sess = tf.compat.v1.Session()
# Create a summary writer, add the 'graph' to the event file.
writer = tf.compat.v1.summary.FileWriter(<some-directory>, sess.graph)
```
Args:
event_writer: An EventWriter. Implements add_event and get_logdir.
graph: A `Graph` object, such as `sess.graph`.
graph_def: DEPRECATED: Use the `graph` argument instead.
"""
self.event_writer = event_writer
# For storing used tags for session.run() outputs.
self._session_run_tags = {}
if graph is not None or graph_def is not None:
# Calling it with both graph and graph_def for backward compatibility.
self.add_graph(graph=graph, graph_def=graph_def)
# Also export the meta_graph_def in this case.
# graph may itself be a graph_def due to positional arguments
maybe_graph_as_def = (graph.as_graph_def(add_shapes=True)
if isinstance(graph, ops.Graph) else graph)
self.add_meta_graph(
meta_graph.create_meta_graph_def(graph_def=graph_def or
maybe_graph_as_def))
# This set contains tags of Summary Values that have been encountered
# already. The motivation here is that the SummaryWriter only keeps the
# metadata property (which is a SummaryMetadata proto) of the first Summary
# Value encountered for each tag. The SummaryWriter strips away the
# SummaryMetadata for all subsequent Summary Values with tags seen
# previously. This saves space.
self._seen_summary_tags = set()
def add_summary(self, summary, global_step=None):
"""Adds a `Summary` protocol buffer to the event file.
This method wraps the provided summary in an `Event` protocol buffer
and adds it to the event file.
You can pass the result of evaluating any summary op, using
`tf.Session.run` or
`tf.Tensor.eval`, to this
function. Alternatively, you can pass a `tf.compat.v1.Summary` protocol
buffer that you populate with your own data. The latter is
commonly done to report evaluation results in event files.
Args:
summary: A `Summary` protocol buffer, optionally serialized as a string.
global_step: Number. Optional global step value to record with the
summary.
"""
if isinstance(summary, bytes):
summ = summary_pb2.Summary()
summ.ParseFromString(summary)
summary = summ
# We strip metadata from values with tags that we have seen before in order
# to save space - we just store the metadata on the first value with a
# specific tag.
for value in summary.value:
if not value.metadata:
continue
if value.tag in self._seen_summary_tags:
# This tag has been encountered before. Strip the metadata.
value.ClearField("metadata")
continue
# We encounter a value with a tag we have not encountered previously. And
# it has metadata. Remember to strip metadata from future values with this
# tag string.
self._seen_summary_tags.add(value.tag)
event = event_pb2.Event(summary=summary)
self._add_event(event, global_step)
def add_session_log(self, session_log, global_step=None):
"""Adds a `SessionLog` protocol buffer to the event file.
This method wraps the provided session in an `Event` protocol buffer
and adds it to the event file.
Args:
session_log: A `SessionLog` protocol buffer.
global_step: Number. Optional global step value to record with the
summary.
"""
event = event_pb2.Event(session_log=session_log)
self._add_event(event, global_step)
def _add_graph_def(self, graph_def, global_step=None):
graph_bytes = graph_def.SerializeToString()
event = event_pb2.Event(graph_def=graph_bytes)
self._add_event(event, global_step)
def add_graph(self, graph, global_step=None, graph_def=None):
"""Adds a `Graph` to the event file.
The graph described by the protocol buffer will be displayed by
TensorBoard. Most users pass a graph in the constructor instead.
Args:
graph: A `Graph` object, such as `sess.graph`.
global_step: Number. Optional global step counter to record with the
graph.
graph_def: DEPRECATED. Use the `graph` parameter instead.
Raises:
ValueError: If both graph and graph_def are passed to the method.
"""
if graph is not None and graph_def is not None:
raise ValueError("Please pass only graph, or graph_def (deprecated), "
"but not both.")
if isinstance(graph, ops.Graph) or isinstance(graph_def, ops.Graph):
# The user passed a `Graph`.
# Check if the user passed it via the graph or the graph_def argument and
# correct for that.
if not isinstance(graph, ops.Graph):
logging.warning("When passing a `Graph` object, please use the `graph`"
" named argument instead of `graph_def`.")
graph = graph_def
# Serialize the graph with additional info.
true_graph_def = graph.as_graph_def(add_shapes=True)
self._write_plugin_assets(graph)
elif (isinstance(graph, graph_pb2.GraphDef) or
isinstance(graph_def, graph_pb2.GraphDef)):
# The user passed a `GraphDef`.
logging.warning("Passing a `GraphDef` to the SummaryWriter is deprecated."
" Pass a `Graph` object instead, such as `sess.graph`.")
# Check if the user passed it via the graph or the graph_def argument and
# correct for that.
if isinstance(graph, graph_pb2.GraphDef):
true_graph_def = graph
else:
true_graph_def = graph_def
else:
# The user passed neither `Graph`, nor `GraphDef`.
raise TypeError("The passed graph must be an instance of `Graph` "
"or the deprecated `GraphDef`")
# Finally, add the graph_def to the summary writer.
self._add_graph_def(true_graph_def, global_step)
def _write_plugin_assets(self, graph):
plugin_assets = plugin_asset.get_all_plugin_assets(graph)
logdir = self.event_writer.get_logdir()
for asset_container in plugin_assets:
plugin_name = asset_container.plugin_name
plugin_dir = os.path.join(logdir, _PLUGINS_DIR, plugin_name)
gfile.MakeDirs(plugin_dir)
assets = asset_container.assets()
for (asset_name, content) in assets.items():
asset_path = os.path.join(plugin_dir, asset_name)
with gfile.Open(asset_path, "w") as f:
f.write(content)
def add_meta_graph(self, meta_graph_def, global_step=None):
"""Adds a `MetaGraphDef` to the event file.
The `MetaGraphDef` allows running the given graph via
`saver.import_meta_graph()`.
Args:
meta_graph_def: A `MetaGraphDef` object, often as returned by
`saver.export_meta_graph()`.
global_step: Number. Optional global step counter to record with the
graph.
Raises:
TypeError: If both `meta_graph_def` is not an instance of `MetaGraphDef`.
"""
if not isinstance(meta_graph_def, meta_graph_pb2.MetaGraphDef):
raise TypeError("meta_graph_def must be type MetaGraphDef, saw type: %s" %
type(meta_graph_def))
meta_graph_bytes = meta_graph_def.SerializeToString()
event = event_pb2.Event(meta_graph_def=meta_graph_bytes)
self._add_event(event, global_step)
def add_run_metadata(self, run_metadata, tag, global_step=None):
"""Adds a metadata information for a single session.run() call.
Args:
run_metadata: A `RunMetadata` protobuf object.
tag: The tag name for this metadata.
global_step: Number. Optional global step counter to record with the
StepStats.
Raises:
ValueError: If the provided tag was already used for this type of event.
"""
if tag in self._session_run_tags:
raise ValueError("The provided tag was already used for this event type")
self._session_run_tags[tag] = True
tagged_metadata = event_pb2.TaggedRunMetadata()
tagged_metadata.tag = tag
# Store the `RunMetadata` object as bytes in order to have postponed
# (lazy) deserialization when used later.
tagged_metadata.run_metadata = run_metadata.SerializeToString()
event = event_pb2.Event(tagged_run_metadata=tagged_metadata)
self._add_event(event, global_step)
def _add_event(self, event, step):
event.wall_time = time.time()
if step is not None:
event.step = int(step)
self.event_writer.add_event(event)
@tf_export(v1=["summary.FileWriter"])
class FileWriter(SummaryToEventTransformer):
"""Writes `Summary` protocol buffers to event files.
The `FileWriter` class provides a mechanism to create an event file in a
given directory and add summaries and events to it. The class updates the
file contents asynchronously. This allows a training program to call methods
to add data to the file directly from the training loop, without slowing down
training.
When constructed with a `tf.compat.v1.Session` parameter, a `FileWriter`
instead forms a compatibility layer over new graph-based summaries
(`tf.contrib.summary`) to facilitate the use of new summary writing with
pre-existing code that expects a `FileWriter` instance.
"""
def __init__(self,
logdir,
graph=None,
max_queue=10,
flush_secs=120,
graph_def=None,
filename_suffix=None,
session=None):
"""Creates a `FileWriter`, optionally shared within the given session.
Typically, constructing a file writer creates a new event file in `logdir`.
This event file will contain `Event` protocol buffers constructed when you
call one of the following functions: `add_summary()`, `add_session_log()`,
`add_event()`, or `add_graph()`.
If you pass a `Graph` to the constructor it is added to
the event file. (This is equivalent to calling `add_graph()` later).
TensorBoard will pick the graph from the file and display it graphically so
you can interactively explore the graph you built. You will usually pass
the graph from the session in which you launched it:
```python
...create a graph...
# Launch the graph in a session.
sess = tf.compat.v1.Session()
# Create a summary writer, add the 'graph' to the event file.
writer = tf.compat.v1.summary.FileWriter(<some-directory>, sess.graph)
```
The `session` argument to the constructor makes the returned `FileWriter` a
compatibility layer over new graph-based summaries (`tf.contrib.summary`).
Crucially, this means the underlying writer resource and events file will
be shared with any other `FileWriter` using the same `session` and `logdir`,
and with any `tf.contrib.summary.SummaryWriter` in this session using the
the same shared resource name (which by default scoped to the logdir). If
no such resource exists, one will be created using the remaining arguments
to this constructor, but if one already exists those arguments are ignored.
In either case, ops will be added to `session.graph` to control the
underlying file writer resource. See `tf.contrib.summary` for more details.
Args:
logdir: A string. Directory where event file will be written.
graph: A `Graph` object, such as `sess.graph`.
max_queue: Integer. Size of the queue for pending events and summaries.
flush_secs: Number. How often, in seconds, to flush the
pending events and summaries to disk.
graph_def: DEPRECATED: Use the `graph` argument instead.
filename_suffix: A string. Every event file's name is suffixed with
`suffix`.
session: A `tf.compat.v1.Session` object. See details above.
Raises:
RuntimeError: If called with eager execution enabled.
@compatibility(eager)
`FileWriter` is not compatible with eager execution. To write TensorBoard
summaries under eager execution, use `tf.contrib.summary` instead.
@end_compatibility
"""
if context.executing_eagerly():
raise RuntimeError(
"tf.summary.FileWriter is not compatible with eager execution. "
"Use tf.contrib.summary instead.")
if session is not None:
event_writer = EventFileWriterV2(
session, logdir, max_queue, flush_secs, filename_suffix)
else:
event_writer = EventFileWriter(logdir, max_queue, flush_secs,
filename_suffix)
self._closed = False
super(FileWriter, self).__init__(event_writer, graph, graph_def)
def __enter__(self):
"""Make usable with "with" statement."""
return self
def __exit__(self, unused_type, unused_value, unused_traceback):
"""Make usable with "with" statement."""
self.close()
def get_logdir(self):
"""Returns the directory where event file will be written."""
return self.event_writer.get_logdir()
def _warn_if_event_writer_is_closed(self):
if self._closed:
warnings.warn("Attempting to use a closed FileWriter. "
"The operation will be a noop unless the FileWriter "
"is explicitly reopened.")
def _add_event(self, event, step):
self._warn_if_event_writer_is_closed()
super(FileWriter, self)._add_event(event, step)
def add_event(self, event):
"""Adds an event to the event file.
Args:
event: An `Event` protocol buffer.
"""
self._warn_if_event_writer_is_closed()
self.event_writer.add_event(event)
def flush(self):
"""Flushes the event file to disk.
Call this method to make sure that all pending events have been written to
disk.
"""
# Flushing a closed EventFileWriterV2 raises an exception. It is,
# however, a noop for EventFileWriter.
self._warn_if_event_writer_is_closed()
self.event_writer.flush()
def close(self):
"""Flushes the event file to disk and close the file.
Call this method when you do not need the summary writer anymore.
"""
self.event_writer.close()
self._closed = True
def reopen(self):
"""Reopens the EventFileWriter.
Can be called after `close()` to add more events in the same directory.
The events will go into a new events file.
Does nothing if the EventFileWriter was not closed.
"""
self.event_writer.reopen()
self._closed = False