def create_bundle_file(self, bundle_file, bundle_description=None):
"""Writes a generator_pb2.GeneratorBundle file in the specified location.
Saves the checkpoint, metagraph, and generator id in one file.
Args:
bundle_file: Location to write the bundle file.
bundle_description: A short, human-readable string description of this
bundle.
Raises:
SequenceGeneratorError: if there is an error creating the bundle file.
"""
if not bundle_file:
raise SequenceGeneratorError('Bundle file location not specified.')
if not self.details.id:
raise SequenceGeneratorError(
'Generator id must be included in GeneratorDetails when creating '
'a bundle file.')
if not self.details.description:
tf.logging.warn(
'Writing bundle file with no generator description.')
if not bundle_description:
tf.logging.warn('Writing bundle file with no bundle description.')
self.initialize()
tempdir = None
try:
tempdir = tempfile.mkdtemp()
checkpoint_filename = os.path.join(tempdir, 'model.ckpt')
self._model.write_checkpoint_with_metagraph(checkpoint_filename)
if not os.path.isfile(checkpoint_filename):
raise SequenceGeneratorError(
'Could not read checkpoint file: %s' %
(checkpoint_filename))
metagraph_filename = checkpoint_filename + '.meta'
if not os.path.isfile(metagraph_filename):
raise SequenceGeneratorError(
'Could not read metagraph file: %s' % (metagraph_filename))
bundle = generator_pb2.GeneratorBundle()
bundle.generator_details.CopyFrom(self.details)
if bundle_description:
bundle.bundle_details.description = bundle_description
with tf.gfile.Open(checkpoint_filename, 'rb') as f:
bundle.checkpoint_file.append(f.read())
with tf.gfile.Open(metagraph_filename, 'rb') as f:
bundle.metagraph_file = f.read()
with tf.gfile.Open(bundle_file, 'wb') as f:
f.write(bundle.SerializeToString())
finally:
if tempdir is not None:
tf.gfile.DeleteRecursively(tempdir)
def read_bundle_file(bundle_file):
# Read in bundle file.
bundle = generator_pb2.GeneratorBundle()
with tf.gfile.Open(bundle_file, 'rb') as f:
try:
bundle.ParseFromString(f.read())
except message.DecodeError as e:
raise GeneratorBundleParseError(e)
return bundle
def testUseMatchingGeneratorId(self):
bundle = generator_pb2.GeneratorBundle(
generator_details=generator_pb2.GeneratorDetails(
id='test_generator'),
checkpoint_file=[b'foo.ckpt'],
metagraph_file=b'foo.ckpt.meta')
SeuenceGenerator(bundle=bundle)
bundle.generator_details.id = 'blarg'
with self.assertRaises(sequence_generator.SequenceGeneratorError):
SeuenceGenerator(bundle=bundle)
def testSpecifyEitherCheckPointOrBundle(self):
bundle = generator_pb2.GeneratorBundle(
generator_details=generator_pb2.GeneratorDetails(
id='test_generator'),
checkpoint_file=[b'foo.ckpt'],
metagraph_file=b'foo.ckpt.meta')
with self.assertRaises(sequence_generator.SequenceGeneratorError):
SeuenceGenerator(checkpoint='foo.ckpt', bundle=bundle)
with self.assertRaises(sequence_generator.SequenceGeneratorError):
SeuenceGenerator(checkpoint=None, bundle=None)
SeuenceGenerator(checkpoint='foo.ckpt')
SeuenceGenerator(bundle=bundle)
def testGetBundleDetails(self):
# Test with non-bundle generator.
seq_gen = SeuenceGenerator(checkpoint='foo.ckpt')
self.assertEqual(None, seq_gen.bundle_details)
# Test with bundle-based generator.
bundle_details = generator_pb2.GeneratorBundle.BundleDetails(
description='bundle of joy')
bundle = generator_pb2.GeneratorBundle(
generator_details=generator_pb2.GeneratorDetails(
id='test_generator'),
bundle_details=bundle_details,
checkpoint_file=[b'foo.ckpt'],
metagraph_file=b'foo.ckpt.meta')
seq_gen = SeuenceGenerator(bundle=bundle)
self.assertEqual(bundle_details, seq_gen.bundle_details)
