text stringlengths 0 828 |
|---|
for candidate_cls in getmro(cls): |
if is_backup_class(cls): |
# Note that we don't keep recursing on base classes |
added += self.add_class(candidate_cls, include_bases=False) |
return added" |
1129,"def log(self, entry, *args): |
""""""Append the string supplied to the log (a list of strings). If |
additional arguments are supplied, then first string is assumed to be |
a format string and the other args are used for string interpolation. |
For instance `backup.log(""%d + %d == %d"", 1, 1, 2)` would result in the |
string `'1 + 1 == 2'` being logged"""""" |
if args: |
entry = entry % args |
self.backup_log.append(entry)" |
1130,"def run_backup(self): |
""""""The actual backup is performed. The data for all added classes is |
extracted and written to a file per class where each line (terminated |
by a line feed character) is the JSON representing a single object. |
Those files are all archived in a single gzip'ed tarball which is |
stored in the AWS S3 bucket specified when the current instance of |
Backup was created"""""" |
self.log(""Starting backup at %s"", now_field()) |
self.log(""Backup config object created at %s"", self.timestamp) |
# Make sure we're good to go |
for fld in ['aws_access_key', 'aws_secret_key', 'bucketname']: |
val = getattr(self, fld, None) |
if not val: |
self.log(""Backup cannot start: %s is a required field"", fld) |
raise ValueError(self.backup_log[-1]) |
# Start the compressed tarball our data is stored in |
backup_file = NamedTemporaryFile(suffix="".tar.gz"") |
backup_tarfile = tarfile.open(fileobj=backup_file, mode='w:gz') |
for cls_name, cls in self.classes.items(): |
self.log(""Backing up %s"", cls_name) |
rec_count = 0 |
with NamedTemporaryFile() as record_file: |
for rec in cls.find_all(): |
write_line(record_file, rec.to_data()) |
rec_count += 1 |
record_file.flush() |
backup_tarfile.add(record_file.name, arcname=cls_name+'.json') |
self.log(""%s => %d records backed up"", cls_name, rec_count) |
# Finalize archive |
backup_tarfile.close() |
backup_file.flush() |
backup_size = os.stat(backup_file.name)[6] |
# Figure out key name for archived file |
key_name = ('Backup_' + now_field() + '.tar.gz').replace(':', '_') |
# upload archive to s3 |
if os.environ.get('DEBUG', False) or os.environ.get('travis', False): |
# Local or CI - connect to our mock s3 service |
conn = S3Connection( |
'', '', |
is_secure=False, port=8888, host='localhost', |
calling_format=OrdinaryCallingFormat() |
) |
else: |
conn = S3Connection(self.aws_access_key, self.aws_secret_key) |
bucket = conn.get_bucket(self.bucketname) |
key = Key(bucket) |
key.key = key_name |
self.log( |
""Sending %s [size=%d bytes] with key name %s"", |
backup_file.name, |
backup_size, |
key_name |
) |
# TODO: should probably look into a multi-part upload for larger backup |
key.set_contents_from_filename(backup_file.name) |
self.log(""Sent %s"", backup_file.name) |
# All done |
backup_file.close() |
self.log(""Backup completed"") |
# return the bucket name and key name for the completed backup |
return self.bucketname, key_name" |
1131,"def list_dir(sourceDir, include_source=None, include_file=True): |
""""""与 :func:`os.listdir()` 类似,但提供一些筛选功能,且返回生成器对象。 |
:param str sourceDir: 待处理的文件夹。 |
:param bool include_source: 遍历结果中是否包含源文件夹的路径。 |
:param bool include_file: 是否包含文件。True 表示返回的内容中既包含文件,又 |
包含文件夹;Flase 代表仅包含文件夹。 |
:return: 一个生成器对象。 |
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