138 lines
3.9 KiB
Python
138 lines
3.9 KiB
Python
import os
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import shutil
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import hashlib
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import io
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import logging
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import psutil
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from uuid import uuid4
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from storage.basestorage import BaseStorageV2
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logger = logging.getLogger(__name__)
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class LocalStorage(BaseStorageV2):
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def __init__(self, context, storage_path):
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super(LocalStorage, self).__init__()
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self._root_path = storage_path
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def _init_path(self, path=None, create=False):
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path = os.path.join(self._root_path, path) if path else self._root_path
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if create is True:
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dirname = os.path.dirname(path)
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if not os.path.exists(dirname):
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os.makedirs(dirname)
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return path
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def get_content(self, path):
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path = self._init_path(path)
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with open(path, mode='r') as f:
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return f.read()
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def put_content(self, path, content):
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path = self._init_path(path, create=True)
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with open(path, mode='w') as f:
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f.write(content)
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return path
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def stream_read(self, path):
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path = self._init_path(path)
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with open(path, mode='rb') as f:
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while True:
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buf = f.read(self.buffer_size)
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if not buf:
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break
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yield buf
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def stream_read_file(self, path):
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path = self._init_path(path)
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return io.open(path, mode='rb')
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def stream_write(self, path, fp, content_type=None, content_encoding=None):
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# Size is mandatory
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path = self._init_path(path, create=True)
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with open(path, mode='wb') as out_fp:
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self.stream_write_to_fp(fp, out_fp)
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def exists(self, path):
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path = self._init_path(path)
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return os.path.exists(path)
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def remove(self, path):
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path = self._init_path(path)
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if os.path.isdir(path):
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shutil.rmtree(path)
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return
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try:
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os.remove(path)
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except OSError:
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pass
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def get_checksum(self, path):
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path = self._init_path(path)
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sha_hash = hashlib.sha256()
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with open(path, 'r') as to_hash:
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while True:
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buf = to_hash.read(self.buffer_size)
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if not buf:
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break
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sha_hash.update(buf)
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return sha_hash.hexdigest()[:7]
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def _rel_upload_path(self, uuid):
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return 'uploads/{0}'.format(uuid)
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def initiate_chunked_upload(self):
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new_uuid = str(uuid4())
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# Just create an empty file at the path
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with open(self._init_path(self._rel_upload_path(new_uuid), create=True), 'w'):
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pass
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return new_uuid, {}
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def stream_upload_chunk(self, uuid, offset, length, in_fp, _, content_type=None):
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try:
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with open(self._init_path(self._rel_upload_path(uuid)), 'r+b') as upload_storage:
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upload_storage.seek(offset)
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return self.stream_write_to_fp(in_fp, upload_storage, length), {}, None
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except IOError as ex:
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return 0, {}, ex
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def complete_chunked_upload(self, uuid, final_path, _):
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content_path = self._rel_upload_path(uuid)
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final_path_abs = self._init_path(final_path, create=True)
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if not self.exists(final_path_abs):
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logger.debug('Moving content into place at path: %s', final_path_abs)
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shutil.move(self._init_path(content_path), final_path_abs)
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else:
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logger.debug('Content already exists at path: %s', final_path_abs)
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def cancel_chunked_upload(self, uuid, _):
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content_path = self._init_path(self._rel_upload_path(uuid))
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os.remove(content_path)
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def validate(self, client):
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super(LocalStorage, self).validate(client)
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# Load the set of disk mounts.
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try:
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mounts = psutil.disk_partitions(all=True)
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except:
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logger.exception('Could not load disk partitions')
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return
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# Verify that the storage's root path is under a mounted Docker volume.
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for mount in mounts:
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if mount.mountpoint != '/' and self._root_path.startswith(mount.mountpoint):
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return
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raise Exception('Storage path %s is not under a mounted volume.\n\n'
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'Registry data must be stored under a mounted volume '
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'to prevent data loss' % self._root_path)
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def copy_to(self, destination, path):
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with self.stream_read_file(path) as fp:
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destination.stream_write(path, fp)
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