def get_messages_for_cleaning(user_email=None, process_id=None):
clean_process = CleanUserProcess.get_by_id(process_id)
imap = IMAPHelper()
imap.login(email=user_email, password=clean_process.source_password)
msg_ids = imap.list_messages(criteria=clean_process.search_criteria,
only_with_attachments=True, not_migrated=True)
imap.close()
if len(msg_ids) > 0:
if constants.USER_CONNECTION_LIMIT < len(msg_ids):
n = constants.USER_CONNECTION_LIMIT
else:
n = len(msg_ids)
counter.load_and_increment_counter(
'cleaning_%s_total_count' % user_email,
delta=len(msg_ids),
namespace=str(process_id))
# chunkify: due to the migration API 1QPS limit
# should this optimization be used?
# return [msg_ids[i::n] for i in xrange(n)]
return [msg_ids]
else:
counter.load_and_increment_counter(
'cleaning_%s_total_count' % user_email,
delta=0,
namespace=str(process_id))
process = CleanUserProcess.get_by_id(process_id)
process.status = constants.FINISHED
process.put()
return []
def schedule_user_cleaning(user_email=None, process_id=None):
all_messages = get_messages_for_cleaning(
user_email=user_email, process_id=process_id)
number_of_messages = 0
for chunk in all_messages:
number_of_messages += len(chunk)
process = CleanUserProcess.get_by_id(process_id)
process.number_of_messages = number_of_messages
process.put()
for chunk_ids in all_messages:
if len(chunk_ids) > 0:
logging.info('Scheduling user [%s] messages cleaning', user_email)
deferred.defer(clean_messages, user_email=user_email,
chunk_ids=chunk_ids,
process_id=process_id)
def clean_messages(user_email=None, password=None, chunk_ids=list(),
retry_count=0, process_id=None):
cleaned_successfully = []
remaining = []
if len(chunk_ids) <= 0:
process = CleanUserProcess.get_by_id(process_id)
process.status = constants.FINISHED
process.put()
return True
try:
process = CleanUserProcess.get_by_id(process_id)
imap = IMAPHelper()
imap.login(email=user_email, password=process.source_password)
imap.select()
domain_name = user_email.split('@')[1]
primary_domain = PrimaryDomain.get_or_create(
domain_name)
try:
drive = DriveHelper(credentials_json=primary_domain.credentials,
admin_email=primary_domain.admin_email,
refresh_token=primary_domain.refresh_token)
folder = drive.get_folder(constants.ATTACHMENT_FOLDER)
if not folder:
folder = drive.create_folder(constants.ATTACHMENT_FOLDER)
sub_folder = drive.get_folder(user_email)
if not sub_folder:
sub_folder = drive.create_folder(user_email,
[{'id': folder['id']}])
except Exception as e:
logging.error(
"Couldn't authenticate drive for user %s" % user_email)
raise e
try:
migration = MigrationHelper(
credentials_json=primary_domain.credentials,
refresh_token=primary_domain.refresh_token)
except Exception as e:
logging.error(
"Couldn't authenticate migration api for user %s" % user_email)
raise e
for message_id in chunk_ids:
try:
result = clean_message(msg_id=message_id, imap=imap,
drive=drive,
migration=migration,
folder_id=sub_folder['id'],
user_email=user_email,
process_id=process_id)
if result:
counter.load_and_increment_counter(
'cleaning_%s_ok_count' % (user_email),
namespace=str(process_id))
cleaned_successfully.append(message_id)
else:
counter.load_and_increment_counter(
'cleaning_%s_error_count' % user_email,
namespace=str(process_id))
logging.error(
'Error cleaning message ID [%s] for user [%s]: [%s] ',
message_id, user_email, result)
except Exception as e:
logging.exception(
'Failed cleaning individual message ID [%s] for user [%s]',
message_id, user_email)
remaining = []
if retry_count < constants.MAX_CLEAN_RETRIES:
for chunk_msg in chunk_ids:
if chunk_msg not in cleaned_successfully:
remaining.append(chunk_msg)
logging.info(
'Scheduling [%s] remaining cleaning messages for user [%s]',
len(remaining), user_email)
deferred.defer(clean_messages, user_email=user_email,
chunk_ids=remaining,
process_id=process_id,
retry_count=retry_count + 1)
else:
for chunk_msg in chunk_ids:
if message_id == chunk_msg:
continue
if chunk_msg not in cleaned_successfully:
remaining.append(chunk_msg)
logging.info(
'Giving up cleaning message [%s] for '
'user [%s]', message_id,
user_email)
counter.load_and_increment_counter(
'cleaning_%s_error_count' % user_email,
delta=1,
namespace=str(process_id))
deferred.defer(clean_messages, user_email=user_email,
chunk_ids=remaining,
process_id=process_id)
break
except Exception as e:
logging.exception('Failed cleaning messages chunk')
raise e
finally:
if imap:
imap.close()
if len(chunk_ids) < 10 or (len(cleaned_successfully) + 10 > len(chunk_ids)):
process.status = constants.FINISHED
process.put()
def delayed_delete_message(msg_id=None, process_id=None,
retries=0):
process = CleanUserProcess.get_by_id(process_id)
criteria = process.search_criteria
msg_process = CleanMessageProcess.query(ndb.AND(
CleanMessageProcess.msg_id == msg_id,
CleanMessageProcess.clean_process_id == process_id)
).get()
if msg_process.status != constants.MIGRATED:
if retries < constants.MAX_RETRIES:
deferred.defer(delayed_delete_message, msg_id=msg_id,
process_id=process_id, retries=retries+1,
_countdown=60*2**retries, _queue="elimination")
else:
logging.error("Couldn't delete msg %s for user %s" %
(msg_id, process.source_email))
return
imap = IMAPHelper()
imap.login(process.source_email, process.source_password)
imap.select()
# Look for the migrated email, if it doesn't exist yet
# retry later
try:
subject = imap.get_subject(msg_id=msg_id)
except Exception as e:
if retries < constants.MAX_RETRIES:
deferred.defer(delayed_delete_message, msg_id=msg_id,
process_id=process_id, retries=retries+1,
_countdown=60*2**retries)
else:
logging.error("Couldn't delete msg %s for user %s, error %s" %
(msg_id, process.source_email, e.message))
return
messages = imap.list_messages(criteria="subject:(%s) label:Migrated-Migrados" % subject)
if len(messages) < 1:
if retries < constants.MAX_RETRIES:
deferred.defer(delayed_delete_message, msg_id=msg_id,
process_id=process_id, retries=retries+1,
_countdown=60*2**retries, _queue="elimination")
else:
logging.error("Couldn't delete msg %s for user %s" %
(msg_id, process.source_email))
return
imap.delete_message(msg_id=msg_id, criteria=criteria)
imap.close()
msg_process.status = constants.FINISHED
msg_process.put()
all_done = True
all_cleaning_messages = CleanMessageProcess.query(
CleanMessageProcess.clean_process_id == process_id
).fetch()
progress = 0
for message in all_cleaning_messages:
if not message.status == constants.FINISHED:
all_done = False
else:
progress += 1
if all_done:
process.status = constants.FINISHED
utc_now = datetime.datetime.utcnow()
local_tz = pytz.timezone('America/Bogota')
tz_offset = local_tz.utcoffset(utc_now)
now = utc_now + tz_offset
process.progress = progress
process.latest_activity = "%s" % now
process.put()
def clean_message(msg_id='', imap=None, drive=None,
migration=None, folder_id=None,
user_email=None, process_id=None):
logging.info("Trying to clean message %s for user %s" % (msg_id, user_email))
process = CleanUserProcess.get_by_id(process_id)
criteria = process.search_criteria
msg_process = CleanMessageProcess.get_or_create(msg_id, process_id)
if msg_process.status == constants.FINISHED:
return True
result, message = imap.get_message(msg_id=msg_id)
if result != 'OK':
raise Exception("Couldn't read message")
result, label_data = imap.get_message_labels(msg_id=msg_id)
labels = []
if label_data and label_data[0]:
labels = (((label_data[0].split('('))[2].split(')'))[0]).split()
mail = email.message_from_string(message[0][1])
attachments = []
number_of_attachments = 0
if mail.get_content_maintype() == 'multipart':
for part in mail.walk():
if part.get_content_maintype() == 'multipart':
continue
if part.get('Content-Disposition') is None:
continue
# Is attachment
attached = False
number_of_attachments += 1
attachment_process = CleanAttachmentProcess.get_or_create(
msg_id, msg_process.key.id(), number_of_attachments
)
file_id = ''
if (attachment_process.status == constants.FINISHED and
attachment_process.url and
attachment_process.filename and
attachment_process.file_id
):
attached = True
attachments.append(
(attachment_process.url, attachment_process.filename))
file_id = attachment_process.file_id
if not attached:
attachment = part.get_payload(decode=True)
mime_type = part.get_content_type()
filename = part.get_filename()
text, encoding = email.Header.decode_header(filename)[0]
if encoding:
filename = text.decode(encoding)
insert_result = drive.insert_file(filename=filename,
mime_type=mime_type,
content=attachment,
parent_id=folder_id)
if not insert_result:
attachment_process.error_description = (
"Error inserting file"
)
attachment_process.put()
raise Exception("Insert file error")
drive_url = insert_result['webContentLink']
file_id = insert_result['id']
attachment_process.url = drive_url
attachment_process.file_id = file_id
attachment_process.status = constants.FINISHED
attachment_process.filename = filename
attachment_process.put()
attachments.append((drive_url, filename))
permission_result = drive.insert_permission(file_id=file_id,
value=user_email,
type='user', role='writer')
if not permission_result:
attachment_process.error_description = (
"Permission error"
)
attachment_process.put()
raise Exception("Permission error")
part.set_payload("")
for header in part.keys():
part.__delitem__(header)
msg_process.status = constants.DUPLICATED
msg_process.put()
for url, filename in attachments:
body_suffix = '<a href="%s">%s</a>' % (url, filename)
new_payload = email.MIMEText.MIMEText(body_suffix.encode('utf-8'), 'html', 'utf-8')
mail.attach(new_payload)
# Send new mail
time.sleep(1.2)
migration_result = migration.migrate_mail(user_email=user_email, msg=mail,
labels=labels)
if not migration_result:
msg_process.error_description = "Migration error"
msg_process.put()
raise Exception("Migration error")
else:
msg_process.status = constants.MIGRATED
msg_process.put()
# Then delete previous email
logging.info("Delaying delete of msg %s for user %s" % (msg_id, user_email))
deferred.defer(delayed_delete_message, msg_id=msg_id,
process_id=process_id, _countdown=30, _queue="elimination")
return True
def list_process():
form = CleanUserProcessForm()
user = users.get_current_user()
clean_process_saved = False
clean_processes = []
clean_process_query = CleanUserProcess.query(CleanUserProcess.owner_email == user.email()).order()
query_params = {}
if request.method == 'POST':
if form.validate_on_submit():
primary_domain = PrimaryDomain.get_or_create(
domain_name = user.email().split('@')[1])
logged_in = 'NO'
current_user = users.get_current_user()
if current_user.email() == primary_domain.admin_email:
imap = IMAPHelper()
logged_in, _ = imap.login(
form.data['source_email'], form.data['source_password'])
imap.close()
if logged_in != 'OK':
form.source_email.errors.append(
"Can't access the email with those credentials")
else:
clean_user_process = CleanUserProcess(
owner_email=user.email(),
destination_message_email=user.email(),
status=constants.STARTED
)
for key, value in form.data.iteritems():
setattr(clean_user_process, key, value)
clean_process_key = clean_user_process.put()
clean_process_saved = True
# TODO: process does not appears immediately after it's saved
# launch Pipeline
deferred.defer(schedule_user_cleaning, user_email=form.data['source_email'],
process_id=clean_process_key.id())
is_prev = request.args.get('prev', False)
url_cursor = request.args.get('cursor', None)
cursor = Cursor(urlsafe=url_cursor) if url_cursor else None
if is_prev:
clean_process_query = clean_process_query.order(
CleanUserProcess.created)
cursor = cursor.reversed()
else:
clean_process_query = clean_process_query.order(
-CleanUserProcess.created)
data, next_curs, more = clean_process_query.fetch_page(
constants.PAGE_SIZE, start_cursor=cursor)
clean_processes.extend(data)
if is_prev:
prev_curs = next_curs.reversed().urlsafe() if more else None
next_curs = url_cursor
else:
prev_curs = url_cursor
next_curs = next_curs.urlsafe() if more else None
return render_template('process.html', form=form, user=user.email(),
clean_process_saved=clean_process_saved,
clean_processes=clean_processes, next_curs=next_curs,
more=more, prev_curs=prev_curs)
