def multi_output_reducer(self, key, values, output_file):
"""
Write values to the appropriate file as determined by the key.
Write to the encrypted file by streaming through gzip, which compresses before encrypting
"""
_date_string, org_id = key
recipients = self.recipients_for_org_id[org_id]
log.info('Encryption recipients: %s', str(recipients))
def report_progress(num_bytes):
"""Update hadoop counters as the file is written"""
self.incr_counter('Event Export', 'Bytes Written to Output', num_bytes)
key_file_targets = [get_target_from_url(url_path_join(self.gpg_key_dir, recipient)) for recipient in recipients]
with make_encrypted_file(output_file, key_file_targets, progress=report_progress) as encrypted_output_file:
outfile = gzip.GzipFile(mode='wb', fileobj=encrypted_output_file)
try:
for value in values:
outfile.write(value.strip())
outfile.write('\n')
# WARNING: This line ensures that Hadoop knows that our process is not sitting in an infinite loop.
# Do not remove it.
self.incr_counter('Event Export', 'Raw Bytes Written', len(value) + 1)
finally:
outfile.close()
def multi_output_reducer(self, key, values, output_file):
"""
Write values to the appropriate file as determined by the key.
Write to the encrypted file by streaming through gzip, which compresses before encrypting
"""
_date_string, org_id = key
recipients = self.recipients_for_org_id[org_id]
log.info('Encryption recipients: %s', str(recipients))
def report_progress(num_bytes):
"""Update hadoop counters as the file is written"""
self.incr_counter('Event Export', 'Bytes Written to Output',
num_bytes)
key_file_targets = [
get_target_from_url(url_path_join(self.gpg_key_dir, recipient))
for recipient in recipients
]
with make_encrypted_file(
output_file, key_file_targets,
progress=report_progress) as encrypted_output_file:
outfile = gzip.GzipFile(mode='wb', fileobj=encrypted_output_file)
try:
for value in values:
outfile.write(value.strip())
outfile.write('\n')
# WARNING: This line ensures that Hadoop knows that our process is not sitting in an infinite loop.
# Do not remove it.
self.incr_counter('Event Export', 'Raw Bytes Written',
len(value) + 1)
finally:
outfile.close()
def test_make_encrypted_file_with_implied_recipients(self):
values = ['this', 'is', 'a', 'test']
with tempfile.NamedTemporaryFile() as output_file:
with make_encrypted_file(output_file, self.key_file_targets) as encrypted_output_file:
for value in values:
encrypted_output_file.write(value)
encrypted_output_file.write('\n')
output_file.seek(0)
self.check_encrypted_data(output_file, values)
def run(self):
recipients = set(self.recipient)
if self.gpg_master_key is not None:
recipients.add(self.gpg_master_key)
key_file_targets = [
get_target_from_url(url_path_join(self.gpg_key_dir, recipient))
for recipient in recipients
]
path_task = PathSetTask([self.course_files_url], ['*.*'])
with make_temp_directory(prefix='obfuscate-archive.',
dir=self.temporary_dir) as tmp_directory:
for target in path_task.output():
with target.open('r') as input_file:
# Get path without urlscheme.
course_files_path = urlparse.urlparse(
self.course_files_url).path
# Calculates target's relative path to course_files_path by getting the substring that
# occurs after course_files_path substring in target's path.
# Needed as target.path returns path with urlscheme for s3target & without for hdfstarget.
# Examples:
# target.path: /pipeline/output/edX_Demo_Course/events/edX_Demo_Course-events-2015-08-30.log.gz
# relative_path: events/edX_Demo_Course-events-2015-08-30.log.gz
# target.path: s3://some_bucket/output/edX_Demo_Course/state/2015-11-25/edX-Demo-Course-auth_user-prod-analytics.sql
# relative_path: state/2015-11-25/edX-Demo-Course-auth_user-prod-analytics.sql
r_index = target.path.find(course_files_path) + len(
course_files_path)
relative_path = target.path[r_index:].lstrip('/')
local_file_path = os.path.join(tmp_directory,
relative_path)
try:
os.makedirs(os.path.dirname(local_file_path))
except OSError as exc:
if exc.errno != errno.EEXIST:
raise
with open(local_file_path, 'w') as temp_file:
copy_file_to_file(input_file, temp_file)
def report_encrypt_progress(num_bytes):
"""Log encryption progress."""
log.info('Encrypted %d bytes', num_bytes)
with self.output().open('w') as output_file:
with make_encrypted_file(
output_file,
key_file_targets,
progress=report_encrypt_progress,
dir=self.temporary_dir) as encrypted_output_file:
with tarfile.open(mode='w:gz',
fileobj=encrypted_output_file
) as output_archive_file:
output_archive_file.add(tmp_directory, arcname='')
def test_make_encrypted_file_with_implied_recipients(self):
values = ['this', 'is', 'a', 'test']
with tempfile.NamedTemporaryFile() as output_file:
with make_encrypted_file(
output_file,
self.key_file_targets) as encrypted_output_file:
for value in values:
encrypted_output_file.write(value)
encrypted_output_file.write('\n')
output_file.seek(0)
self.check_encrypted_data(output_file, values)
def multi_output_reducer(self, key, values, output_file):
"""
Write values to the appropriate file as determined by the key.
Write to the encrypted file by streaming through gzip, which compresses before encrypting
"""
_date_string, org_id = key
recipients = self._get_recipients(org_id)
key_file_targets = [get_target_from_url(url_path_join(self.gpg_key_dir, recipient)) for recipient in recipients]
with make_encrypted_file(output_file, key_file_targets) as encrypted_output_file:
outfile = gzip.GzipFile(mode='wb', fileobj=encrypted_output_file)
try:
for value in values:
outfile.write(value.strip())
outfile.write('\n')
finally:
outfile.close()
def run(self):
recipients = set(self.recipient)
if self.gpg_master_key is not None:
recipients.add(self.gpg_master_key)
key_file_targets = [
get_target_from_url(url_path_join(self.gpg_key_dir, recipient))
for recipient in recipients
]
path_task = PathSetTask([self.course_files_url], ['*.*'])
with make_temp_directory(prefix='obfuscate-archive.', dir=self.temporary_dir) as tmp_directory:
for target in path_task.output():
with target.open('r') as input_file:
# Get path without urlscheme.
course_files_path = urlparse.urlparse(self.course_files_url).path
# Calculates target's relative path to course_files_path by getting the substring that
# occurs after course_files_path substring in target's path.
# Needed as target.path returns path with urlscheme for s3target & without for hdfstarget.
# Examples:
# target.path: /pipeline/output/edX_Demo_Course/events/edX_Demo_Course-events-2015-08-30.log.gz
# relative_path: events/edX_Demo_Course-events-2015-08-30.log.gz
# target.path: s3://some_bucket/output/edX_Demo_Course/state/2015-11-25/edX-Demo-Course-auth_user-prod-analytics.sql
# relative_path: state/2015-11-25/edX-Demo-Course-auth_user-prod-analytics.sql
r_index = target.path.find(course_files_path) + len(course_files_path)
relative_path = target.path[r_index:].lstrip('/')
local_file_path = os.path.join(tmp_directory, relative_path)
try:
os.makedirs(os.path.dirname(local_file_path))
except OSError as exc:
if exc.errno != errno.EEXIST:
raise
with open(local_file_path, 'w') as temp_file:
copy_file_to_file(input_file, temp_file)
def report_encrypt_progress(num_bytes):
"""Log encryption progress."""
log.info('Encrypted %d bytes', num_bytes)
with self.output().open('w') as output_file:
with make_encrypted_file(
output_file, key_file_targets, progress=report_encrypt_progress, dir=self.temporary_dir
) as encrypted_output_file:
with tarfile.open(mode='w:gz', fileobj=encrypted_output_file) as output_archive_file:
output_archive_file.add(tmp_directory, arcname='')
def multi_output_reducer(self, key, values, output_file):
"""
Write values to the appropriate file as determined by the key.
Write to the encrypted file by streaming through gzip, which compresses before encrypting
"""
_date_string, org_id = key
recipients = self._get_recipients(org_id)
key_file_targets = [
get_target_from_url(url_path_join(self.gpg_key_dir, recipient))
for recipient in recipients
]
with make_encrypted_file(output_file,
key_file_targets) as encrypted_output_file:
outfile = gzip.GzipFile(mode='wb', fileobj=encrypted_output_file)
try:
for value in values:
outfile.write(value.strip())
outfile.write('\n')
finally:
outfile.close()
