def _do_single_part_upload(self, backup_file):
fqn = self._fqn(backup_file.backup_path)
self.log.debug("Starting single part upload of %s to %s:%s",
backup_file, self.args.bucket_name, fqn)
key = self.bucket.new_key(fqn)
# All meta data fields have to be strings.
key.update_metadata(self._dict_to_aws_meta(backup_file.serialise()))
# # Rebuild the MD5 tuple boto makes
# md5 = (
# backup_file.md5,
# source_meta["md5_base64"],
# source_meta["size"]
# )
timing = endpoints.TransferTiming(self.log, fqn,
backup_file.component.stat.size)
key.set_contents_from_filename(backup_file.file_path,
replace=False,
cb=timing.progress,
num_cb=timing.num_callbacks)
self.log.debug("Finished single part upload of %s to %s:%s",
backup_file, self.args.bucket_name, fqn)
return fqn
def _do_multi_part_upload(self, backup_file):
fqn = self._fqn(backup_file.backup_path)
self.log.debug("Starting multi part upload of %s to %s:%s",
backup_file, self.args.bucket_name, fqn)
# All meta tags must be strings
metadata = self._dict_to_aws_meta(backup_file.serialise())
mp = self.bucket.initiate_multipart_upload(fqn, metadata=metadata)
timing = endpoints.TransferTiming(self.log, fqn,
backup_file.component.stat.size)
chunk = None
try:
# Part numbers must start at 1
for part, chunk in enumerate(
self._chunk_file(backup_file.file_path), 1):
self.log.debug("Uploading part %s", part)
try:
mp.upload_part_from_file(chunk,
part,
cb=timing.progress,
num_cb=timing.num_callbacks)
finally:
chunk.close()
except (Exception):
mp.cancel_upload()
raise
mp.complete_upload()
self.log.debug("Finished multi part upload of %s to %s:%s",
backup_file, self.args.bucket_name, fqn)
return fqn
def restore_file(self, backup_file, dest_prefix):
src_path = os.path.join(self.args.backup_base, backup_file.backup_path)
dest_path = os.path.join(dest_prefix, backup_file.restore_path)
file_util.ensure_dir(os.path.dirname(dest_path))
self.log.debug("Restoring file %s to %s", src_path, dest_path)
with endpoints.TransferTiming(self.log, src_path,
backup_file.component.stat.size):
shutil.copy(src_path, dest_path)
return dest_path
def backup_file(self, backup_file):
dest_path = os.path.join(self.args.backup_base,
backup_file.backup_path)
file_util.ensure_dir(os.path.dirname(dest_path))
# Store the actual file
with endpoints.TransferTiming(self.log, dest_path,
backup_file.component.stat.size):
shutil.copy(backup_file.file_path, dest_path)
# Store the meta data
dest_meta_path = dest_path + self._META_SUFFIX
with open(dest_meta_path, "w") as f:
f.write(json.dumps(backup_file.serialise()))
return dest_path
def backup_keyspace(self, ks_backup):
fqn = self._fqn(ks_backup.backup_path)
self.log.debug("Starting to store keyspace backup to %s:%s",
self.args.bucket_name, fqn)
json_str = zlib.compress(msgpack.dumps(ks_backup.serialise()))
with endpoints.TransferTiming(self.log, fqn, len(json_str)):
self.bucket.put_object(Key=fqn,
Body=json_str,
ContentType='application/binary',
**self.sse_options)
self.log.debug("Finished storing keyspace backup to %s:%s",
self.args.bucket_name, fqn)
return
def read_keyspace(self, path):
key_name = path
fqn = self._fqn(key_name)
self.log.debug("Starting to read json from %s:%s",
self.args.bucket_name, fqn)
key = self.bucket.get_key(fqn)
if key is None:
raise EnvironmentError(errno.ENOENT, fqn)
timing = endpoints.TransferTiming(self.log, fqn, 0)
data = json.loads(
key.get_contents_as_string(cb=timing.progress,
num_cb=timing.num_callbacks))
self.log.debug("Finished reading json from %s:%s",
self.args.bucket_name, fqn)
return cassandra.KeyspaceBackup.deserialise(data)
def read_keyspace(self, path):
fqn = self._fqn(path)
self.log.debug("Starting to read keyspace backup from %s:%s",
self.args.bucket_name, fqn)
with endpoints.TransferTiming(self.log, fqn, 0):
try:
body = self.bucket.Object(fqn).get(**self.sse_options)['Body']
except botocore.exceptions.ClientError as e:
if e.response['Error']['Code'] == "404":
raise EnvironmentError(errno.ENOENT, fqn)
raise
data = msgpack.loads(zlib.decompress(body.read()))
self.log.debug("Finished reading keyspace backup from %s:%s",
self.args.bucket_name, fqn)
return cassandra.KeyspaceBackup.deserialise(data)
def restore_file(self, backup_file, dest_prefix):
"""
"""
key_name = backup_file.backup_path
fqn = self._fqn(key_name)
dest_path = os.path.join(dest_prefix, backup_file.restore_path)
file_util.ensure_dir(os.path.dirname(dest_path))
self.log.debug("Starting to restore from %s:%s to %s",
self.args.bucket_name, fqn, dest_path)
key = self.bucket.get_key(fqn)
if key is None:
raise EnvironmentError(errno.ENOENT, fqn)
timing = endpoints.TransferTiming(self.log, fqn,
backup_file.component.stat.size)
key.get_contents_to_filename(dest_path,
cb=timing.progress,
num_cb=timing.num_callbacks)
return dest_path
def backup_keyspace(self, ks_backup):
key_name = ks_backup.backup_path
fqn = self._fqn(key_name)
self.log.debug("Starting to store json to %s:%s",
self.args.bucket_name, fqn)
# TODO: Overwrite ?
key = self.bucket.new_key(fqn)
json_str = json.dumps(ks_backup.serialise())
timing = endpoints.TransferTiming(self.log, fqn, len(json_str))
key.set_contents_from_string(
json_str,
headers={'Content-Type': 'application/json'},
cb=timing.progress,
num_cb=timing.num_callbacks)
self.log.debug("Finished storing json to %s:%s", self.args.bucket_name,
fqn)
return
def backup_file(self, backup_file):
fqn = self._fqn(backup_file.backup_path)
self.log.debug("Starting upload of %s to %s:%s", backup_file,
self.args.bucket_name, fqn)
num_retries = 5
for attempt in xrange(num_retries):
timing = endpoints.TransferTiming(self.log, fqn,
backup_file.component.stat.size)
try:
self.bucket.upload_file(backup_file.file_path,
fqn,
ExtraArgs=dict(
Metadata=self._dict_to_aws_meta(
backup_file.serialise()),
**self.sse_options),
Callback=timing.progress,
Config=self.transfer_config)
break
except boto3.exceptions.S3UploadFailedError as e:
# retry "Request Timeout (408)" errors only, other errors
# are retried by boto3
if 'Request Timeout' not in str(e):
raise
if attempt == num_retries - 1:
raise
self.log.warn(
"Retrying (attempt %d) exception %s while uploading %s to %s:%s",
attempt, e, backup_file, self.args.bucket_name, fqn)
self.log.debug("Finished upload of %s to %s:%s", backup_file,
self.args.bucket_name, fqn)
return fqn
def restore_file(self, backup_file, dest_prefix):
fqn = self._fqn(backup_file.backup_path)
dest_path = os.path.join(dest_prefix, backup_file.restore_path)
file_util.ensure_dir(os.path.dirname(dest_path))
self.log.debug("Starting to restore from %s:%s to %s",
self.args.bucket_name, fqn, dest_path)
timing = endpoints.TransferTiming(self.log, fqn,
backup_file.component.stat.size)
try:
self.bucket.download_file(fqn,
backup_file.file_path,
ExtraArgs=self.sse_options,
Callback=timing.progress,
Config=self.transfer_config)
except botocore.exceptions.ClientError as e:
if e.response['Error']['Code'] == "404":
raise EnvironmentError(errno.ENOENT, fqn)
raise
return dest_path
