def put(self,source,dest,retry=True):
dest = self._fix_slashes(dest)
if(self.client != None):
#open the file and get its size
f = open(source,'rb')
f_size = os.path.getsize(source)
try:
if(f_size < self.MAX_CHUNK):
#use the regular upload
response = self.client.files_upload(f.read(),dest,mode=WriteMode('overwrite'))
else:
#start the upload session
upload_session = self.client.files_upload_session_start(f.read(self.MAX_CHUNK))
upload_cursor = UploadSessionCursor(upload_session.session_id,f.tell())
while(f.tell() < f_size):
#check if we should finish the upload
if((f_size - f.tell()) <= self.MAX_CHUNK):
#upload and close
self.client.files_upload_session_finish(f.read(self.MAX_CHUNK),upload_cursor,CommitInfo(dest,mode=WriteMode('overwrite')))
else:
#upload a part and store the offset
self.client.files_upload_session_append_v2(f.read(self.MAX_CHUNK),upload_cursor)
upload_cursor.offset = f.tell()
#if no errors we're good!
return True
except Exception as anError:
utils.log(str(anError))
#if we have an exception retry
if(retry):
return self.put(source,dest,False)
else:
#tried once already, just quit
return False
else:
return False
def put(self, source, dest, retry=True):
dest = self._fix_slashes(dest)
if(self.client is not None):
# open the file and get its size
f = open(source, 'rb')
f_size = os.path.getsize(source)
try:
if(f_size < self.MAX_CHUNK):
# use the regular upload
self.client.files_upload(f.read(), dest, mode=WriteMode('overwrite'))
else:
# start the upload session
upload_session = self.client.files_upload_session_start(f.read(self.MAX_CHUNK))
upload_cursor = UploadSessionCursor(upload_session.session_id, f.tell())
while(f.tell() < f_size):
# check if we should finish the upload
if((f_size - f.tell()) <= self.MAX_CHUNK):
# upload and close
self.client.files_upload_session_finish(f.read(self.MAX_CHUNK), upload_cursor, CommitInfo(dest, mode=WriteMode('overwrite')))
else:
# upload a part and store the offset
self.client.files_upload_session_append_v2(f.read(self.MAX_CHUNK), upload_cursor)
upload_cursor.offset = f.tell()
# if no errors we're good!
return True
except Exception as anError:
utils.log(str(anError))
# if we have an exception retry
if(retry):
return self.put(source, dest, False)
else:
# tried once already, just quit
return False
else:
return False
def put_file_chunked(self, source_path, remote_path):
if not self.user_authenticated():
self.login()
file_size = os.path.getsize(source_path.name)
f = source_path.open('rb')
try:
buf = f.read(DPBX_UPLOAD_CHUNK_SIZE)
log.Debug(
'dpbx,files_upload_session_start([%d bytes]), total: %d' %
(len(buf), file_size))
upload_sid = self.api_client.files_upload_session_start(buf)
log.Debug('dpbx,files_upload_session_start(): %s' % upload_sid)
upload_cursor = UploadSessionCursor(upload_sid.session_id,
f.tell())
commit_info = CommitInfo(remote_path,
mode=WriteMode.overwrite,
autorename=False,
client_modified=None,
mute=True)
res_metadata = None
progress.report_transfer(f.tell(), file_size)
requested_offset = None
current_chunk_size = DPBX_UPLOAD_CHUNK_SIZE
retry_number = globals.num_retries
is_eof = False
# We're doing our own error handling and retrying logic because
# we can benefit from Dpbx chunked upload and retry only failed
# chunk
while not is_eof or not res_metadata:
try:
if requested_offset is not None:
upload_cursor.offset = requested_offset
if f.tell() != upload_cursor.offset:
f.seek(upload_cursor.offset)
buf = f.read(current_chunk_size)
is_eof = f.tell() >= file_size
if not is_eof and len(buf) == 0:
continue
# reset temporary status variables
requested_offset = None
current_chunk_size = DPBX_UPLOAD_CHUNK_SIZE
retry_number = globals.num_retries
if not is_eof:
assert len(buf) != 0
log.Debug(
'dpbx,files_upload_sesssion_append([%d bytes], offset=%d)'
% (len(buf), upload_cursor.offset))
self.api_client.files_upload_session_append(
buf, upload_cursor.session_id,
upload_cursor.offset)
else:
log.Debug(
'dpbx,files_upload_sesssion_finish([%d bytes], offset=%d)'
% (len(buf), upload_cursor.offset))
res_metadata = self.api_client.files_upload_session_finish(
buf, upload_cursor, commit_info)
upload_cursor.offset = f.tell()
log.Debug('progress: %d of %d' %
(upload_cursor.offset, file_size))
progress.report_transfer(upload_cursor.offset, file_size)
except ApiError as e:
error = e.error
if isinstance(error, UploadSessionLookupError
) and error.is_incorrect_offset():
# Server reports that we should send another chunk.
# Most likely this is caused by network error during
# previous upload attempt. In such case we'll get
# expected offset from server and it's enough to just
# seek() and retry again
new_offset = error.get_incorrect_offset(
).correct_offset
log.Debug(
'dpbx,files_upload_session_append: incorrect offset: %d (expected: %s)'
% (upload_cursor.offset, new_offset))
if requested_offset is not None:
# chunk failed even after seek attempt. Something
# strange and no safe way to recover
raise BackendException(
"dpbx: unable to chunk upload")
else:
# will seek and retry
requested_offset = new_offset
continue
raise
except ConnectionError as e:
log.Debug('dpbx,files_upload_session_append: %s' % e)
retry_number -= 1
if not self.user_authenticated():
self.login()
if retry_number == 0:
raise
# We don't know for sure, was partial upload successful or
# not. So it's better to retry smaller amount to avoid extra
# reupload
log.Info('dpbx: sleeping a bit before chunk retry')
time.sleep(30)
current_chunk_size = DPBX_UPLOAD_CHUNK_SIZE / 5
requested_offset = None
continue
if f.tell() != file_size:
raise BackendException('dpbx: something wrong')
log.Debug('dpbx,files_upload_sesssion_finish(): %s' % res_metadata)
progress.report_transfer(f.tell(), file_size)
return res_metadata
finally:
f.close()
def _put(self, source_path, remote_filename):
remote_dir = urllib.unquote(self.parsed_url.path.lstrip('/'))
remote_path = '/' + os.path.join(remote_dir, remote_filename).rstrip()
file_size = os.path.getsize(source_path.name)
f = source_path.open('rb')
try:
progress.report_transfer(0, file_size)
buf = f.read(DPBX_UPLOAD_CHUNK_SIZE)
log.Debug('dpbx,files_upload_session_start([%d bytes]), total: %d' % (len(buf), file_size))
upload_sid = self.api_client.files_upload_session_start(buf)
log.Debug('dpbx,files_upload_session_start(): %s' % upload_sid)
upload_cursor = UploadSessionCursor(upload_sid.session_id, f.tell())
commit_info = CommitInfo(remote_path, mode=WriteMode.overwrite, autorename=False, client_modified=None, mute=True)
res_metadata = None
progress.report_transfer(f.tell(), file_size)
requested_offset = None
current_chunk_size = DPBX_UPLOAD_CHUNK_SIZE
retry_number = globals.num_retries
# We're doing our own error handling and retrying logic because
# we can benefit from Dpbx chunked upload and retry only failed chunk
while (f.tell() < file_size) or not res_metadata:
try:
if requested_offset is not None:
upload_cursor.offset = requested_offset
if f.tell() != upload_cursor.offset:
f.seek(upload_cursor.offset)
buf = f.read(current_chunk_size)
# reset temporary status variables
requested_offset = None
current_chunk_size = DPBX_UPLOAD_CHUNK_SIZE
retry_number = globals.num_retries
if len(buf) != 0:
log.Debug('dpbx,files_upload_sesssion_append([%d bytes], offset=%d)' % (len(buf), upload_cursor.offset))
self.api_client.files_upload_session_append(buf, upload_cursor.session_id, upload_cursor.offset)
else:
log.Debug('dpbx,files_upload_sesssion_finish([%d bytes], offset=%d)' % (len(buf), upload_cursor.offset))
res_metadata = self.api_client.files_upload_session_finish(buf, upload_cursor, commit_info)
upload_cursor.offset = f.tell()
log.Debug('progress: %d of %d' % (upload_cursor.offset, file_size))
progress.report_transfer(upload_cursor.offset, file_size)
except ApiError as e:
error = e.error
if isinstance(error, UploadSessionLookupError) and error.is_incorrect_offset():
# Server reports that we should send another chunk. Most likely this is caused by
# network error during previous upload attempt. In such case we'll get expected offset
# from server and it's enough to just seek() and retry again
new_offset = error.get_incorrect_offset().correct_offset
log.Debug('dpbx,files_upload_session_append: incorrect offset: %d (expected: %s)' % (upload_cursor.offset, new_offset))
if requested_offset is not None:
# chunk failed even after seek attempt. Something strange and no safe way to recover
raise BackendException("dpbx: unable to chunk upload")
else:
# will seek and retry
requested_offset = new_offset
continue
raise
except ConnectionError as e:
log.Debug('dpbx,files_upload_session_append: %s' % e)
retry_number -= 1
if retry_number == 0:
raise
# We don't know for sure, was partial upload successfull or not. So it's better to retry smaller amount to avoid extra reupload
log.Info('dpbx: sleeping a bit before chunk retry')
time.sleep(30)
current_chunk_size = DPBX_UPLOAD_CHUNK_SIZE / 5
requested_offset = None
continue
if f.tell() != file_size:
raise BackendException('dpbx: something wrong')
log.Debug('dpbx,files_upload_sesssion_finish(): %s' % res_metadata)
progress.report_transfer(f.tell(), file_size)
# A few sanity checks
if res_metadata.path_display != remote_path:
raise BackendException('dpbx: result path mismatch: %s (expected: %s)' % (res_metadata.path_display, remote_path))
if res_metadata.size != file_size:
raise BackendException('dpbx: result size mismatch: %s (expected: %s)' % (res_metadata.size, file_size))
finally:
f.close()
def __exit__(self, exc_type, exc_val, exc_tb):
commit = CommitInfo(path=path, mute=True)
cur = UploadSessionCursor(self._sess_id, self._data_offset)
self._dbx.files_upload_session_finish(b'', cur, commit)
def write(self, content):
cur = UploadSessionCursor(self._sess_id, self._data_offset)
self._dbx.files_upload_session_append_v2(content, cur)
self._data_offset += len(content)
def upload(dropbox_helper_id, access_token, size, max_retries):
from .models import DropboxUploadHelper
helper = DropboxUploadHelper.objects.get(id=dropbox_helper_id)
dbx = Dropbox(access_token)
try:
with open(helper.src, 'rb') as f:
chunk = f.read(CHUNK_SIZE)
offset = len(chunk)
upload_session = dbx.files_upload_session_start(chunk)
while True:
chunk = f.read(CHUNK_SIZE)
if not chunk:
break
helper.progress = offset / size
helper.save()
dbx.files_upload_session_append_v2(
chunk,
UploadSessionCursor(
upload_session.session_id,
offset,
),
)
offset += len(chunk)
file_metadata = dbx.files_upload_session_finish(
b'',
UploadSessionCursor(
upload_session.session_id,
offset=offset,
),
CommitInfo(
'/{}'.format(os.path.basename(helper.src)),
# When writing the file it won't overwrite an existing file, just add
# another file like "filename (2).txt"
WriteMode('add'),
),
)
except Exception as e:
helper.failure_reason = str(e)
helper.save()
couch_user = CouchUser.get_by_username(helper.user.username)
if helper.failure_reason is None:
path_link_metadata = dbx.sharing_create_shared_link_with_settings(
file_metadata.path_display,
SharedLinkSettings(
requested_visibility=RequestedVisibility.team_only, ),
)
context = {
'share_url':
path_link_metadata.url,
'path':
os.path.join(
u'Apps',
settings.DROPBOX_APP_NAME,
path_link_metadata.name,
)
}
with localize(couch_user.get_language_code()):
subject = _(u'{} has been uploaded to dropbox!'.format(
helper.dest))
html_content = render_to_string(
'dropbox/emails/upload_success.html', context)
text_content = render_to_string(
'dropbox/emails/upload_success.txt', context)
else:
context = {'reason': helper.failure_reason, 'path': helper.dest}
with localize(couch_user.get_language_code()):
subject = _(u'{} has failed to upload to dropbox'.format(
helper.dest))
html_content = render_to_string('dropbox/emails/upload_error.html',
context)
text_content = render_to_string('dropbox/emails/upload_error.txt',
context)
send_HTML_email(
subject,
helper.user.email,
html_content,
text_content=text_content,
)
