mirror of
https://github.com/janeczku/calibre-web
synced 2024-12-23 16:40:31 +00:00
663 lines
24 KiB
Python
663 lines
24 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
# This file is part of the Calibre-Web (https://github.com/janeczku/calibre-web)
|
|
# Copyright (C) 2018 idalin, OzzieIsaacs
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
from __future__ import division, print_function, unicode_literals
|
|
import os
|
|
import json
|
|
import shutil
|
|
import chardet
|
|
import ssl
|
|
|
|
from flask import Response, stream_with_context
|
|
from sqlalchemy import create_engine
|
|
from sqlalchemy import Column, UniqueConstraint
|
|
from sqlalchemy import String, Integer
|
|
from sqlalchemy.orm import sessionmaker, scoped_session
|
|
try:
|
|
# Compatibility with sqlalchemy 2.0
|
|
from sqlalchemy.orm import declarative_base
|
|
except ImportError:
|
|
from sqlalchemy.ext.declarative import declarative_base
|
|
from sqlalchemy.exc import OperationalError, InvalidRequestError
|
|
from sqlalchemy.sql.expression import text
|
|
|
|
try:
|
|
from apiclient import errors
|
|
from httplib2 import ServerNotFoundError
|
|
importError = None
|
|
gdrive_support = True
|
|
except ImportError as e:
|
|
importError = e
|
|
gdrive_support = False
|
|
try:
|
|
from pydrive2.auth import GoogleAuth
|
|
from pydrive2.drive import GoogleDrive
|
|
from pydrive2.auth import RefreshError
|
|
except ImportError as err:
|
|
try:
|
|
from pydrive.auth import GoogleAuth
|
|
from pydrive.drive import GoogleDrive
|
|
from pydrive.auth import RefreshError
|
|
except ImportError as err:
|
|
importError = err
|
|
gdrive_support = False
|
|
|
|
from . import logger, cli, config
|
|
from .constants import CONFIG_DIR as _CONFIG_DIR
|
|
|
|
|
|
SETTINGS_YAML = os.path.join(_CONFIG_DIR, 'settings.yaml')
|
|
CREDENTIALS = os.path.join(_CONFIG_DIR, 'gdrive_credentials')
|
|
CLIENT_SECRETS = os.path.join(_CONFIG_DIR, 'client_secrets.json')
|
|
|
|
log = logger.create()
|
|
if gdrive_support:
|
|
logger.get('googleapiclient.discovery_cache').setLevel(logger.logging.ERROR)
|
|
if not logger.is_debug_enabled():
|
|
logger.get('googleapiclient.discovery').setLevel(logger.logging.ERROR)
|
|
else:
|
|
log.debug("Cannot import pydrive,httplib2, using gdrive will not work: %s", importError)
|
|
|
|
|
|
class Singleton:
|
|
"""
|
|
A non-thread-safe helper class to ease implementing singletons.
|
|
This should be used as a decorator -- not a metaclass -- to the
|
|
class that should be a singleton.
|
|
|
|
The decorated class can define one `__init__` function that
|
|
takes only the `self` argument. Also, the decorated class cannot be
|
|
inherited from. Other than that, there are no restrictions that apply
|
|
to the decorated class.
|
|
|
|
To get the singleton instance, use the `Instance` method. Trying
|
|
to use `__call__` will result in a `TypeError` being raised.
|
|
|
|
"""
|
|
|
|
def __init__(self, decorated):
|
|
self._decorated = decorated
|
|
|
|
def Instance(self):
|
|
"""
|
|
Returns the singleton instance. Upon its first call, it creates a
|
|
new instance of the decorated class and calls its `__init__` method.
|
|
On all subsequent calls, the already created instance is returned.
|
|
|
|
"""
|
|
try:
|
|
return self._instance
|
|
except AttributeError:
|
|
self._instance = self._decorated()
|
|
return self._instance
|
|
except (ImportError, NameError) as e:
|
|
log.debug(e)
|
|
return None
|
|
|
|
def __call__(self):
|
|
raise TypeError('Singletons must be accessed through `Instance()`.')
|
|
|
|
def __instancecheck__(self, inst):
|
|
return isinstance(inst, self._decorated)
|
|
|
|
|
|
@Singleton
|
|
class Gauth:
|
|
def __init__(self):
|
|
try:
|
|
self.auth = GoogleAuth(settings_file=SETTINGS_YAML)
|
|
except NameError as error:
|
|
log.error(error)
|
|
self.auth = None
|
|
|
|
|
|
@Singleton
|
|
class Gdrive:
|
|
def __init__(self):
|
|
self.drive = getDrive(gauth=Gauth.Instance().auth)
|
|
|
|
def is_gdrive_ready():
|
|
return os.path.exists(SETTINGS_YAML) and os.path.exists(CREDENTIALS)
|
|
|
|
|
|
engine = create_engine('sqlite:///{0}'.format(cli.gdpath), echo=False)
|
|
Base = declarative_base()
|
|
|
|
# Open session for database connection
|
|
Session = sessionmaker()
|
|
Session.configure(bind=engine)
|
|
session = scoped_session(Session)
|
|
|
|
|
|
class GdriveId(Base):
|
|
__tablename__ = 'gdrive_ids'
|
|
|
|
id = Column(Integer, primary_key=True)
|
|
gdrive_id = Column(Integer, unique=True)
|
|
path = Column(String)
|
|
__table_args__ = (UniqueConstraint('gdrive_id', 'path', name='_gdrive_path_uc'),)
|
|
|
|
def __repr__(self):
|
|
return str(self.path)
|
|
|
|
|
|
class PermissionAdded(Base):
|
|
__tablename__ = 'permissions_added'
|
|
|
|
id = Column(Integer, primary_key=True)
|
|
gdrive_id = Column(Integer, unique=True)
|
|
|
|
def __repr__(self):
|
|
return str(self.gdrive_id)
|
|
|
|
|
|
def migrate():
|
|
if not engine.dialect.has_table(engine.connect(), "permissions_added"):
|
|
PermissionAdded.__table__.create(bind = engine)
|
|
for sql in session.execute(text("select sql from sqlite_master where type='table'")):
|
|
if 'CREATE TABLE gdrive_ids' in sql[0]:
|
|
currUniqueConstraint = 'UNIQUE (gdrive_id)'
|
|
if currUniqueConstraint in sql[0]:
|
|
sql=sql[0].replace(currUniqueConstraint, 'UNIQUE (gdrive_id, path)')
|
|
sql=sql.replace(GdriveId.__tablename__, GdriveId.__tablename__ + '2')
|
|
session.execute(sql)
|
|
session.execute("INSERT INTO gdrive_ids2 (id, gdrive_id, path) SELECT id, "
|
|
"gdrive_id, path FROM gdrive_ids;")
|
|
session.commit()
|
|
session.execute('DROP TABLE %s' % 'gdrive_ids')
|
|
session.execute('ALTER TABLE gdrive_ids2 RENAME to gdrive_ids')
|
|
break
|
|
|
|
if not os.path.exists(cli.gdpath):
|
|
try:
|
|
Base.metadata.create_all(engine)
|
|
except Exception:
|
|
raise
|
|
migrate()
|
|
|
|
|
|
def getDrive(drive=None, gauth=None):
|
|
if not drive:
|
|
if not gauth:
|
|
gauth = GoogleAuth(settings_file=SETTINGS_YAML)
|
|
# Try to load saved client credentials
|
|
gauth.LoadCredentialsFile(CREDENTIALS)
|
|
if gauth.access_token_expired:
|
|
# Refresh them if expired
|
|
try:
|
|
gauth.Refresh()
|
|
except RefreshError as e:
|
|
log.error("Google Drive error: %s", e)
|
|
except Exception as ex:
|
|
log.debug_or_exception(ex)
|
|
else:
|
|
# Initialize the saved creds
|
|
gauth.Authorize()
|
|
# Save the current credentials to a file
|
|
return GoogleDrive(gauth)
|
|
if drive.auth.access_token_expired:
|
|
try:
|
|
drive.auth.Refresh()
|
|
except RefreshError as e:
|
|
log.error("Google Drive error: %s", e)
|
|
return drive
|
|
|
|
def listRootFolders():
|
|
try:
|
|
drive = getDrive(Gdrive.Instance().drive)
|
|
folder = "'root' in parents and mimeType = 'application/vnd.google-apps.folder' and trashed = false"
|
|
fileList = drive.ListFile({'q': folder}).GetList()
|
|
except (ServerNotFoundError, ssl.SSLError, RefreshError) as e:
|
|
log.info("GDrive Error %s" % e)
|
|
fileList = []
|
|
return fileList
|
|
|
|
|
|
def getEbooksFolder(drive):
|
|
return getFolderInFolder('root', config.config_google_drive_folder, drive)
|
|
|
|
|
|
def getFolderInFolder(parentId, folderName, drive):
|
|
# drive = getDrive(drive)
|
|
query=""
|
|
if folderName:
|
|
query = "title = '%s' and " % folderName.replace("'", r"\'")
|
|
folder = query + "'%s' in parents and mimeType = 'application/vnd.google-apps.folder'" \
|
|
" and trashed = false" % parentId
|
|
fileList = drive.ListFile({'q': folder}).GetList()
|
|
if fileList.__len__() == 0:
|
|
return None
|
|
else:
|
|
return fileList[0]
|
|
|
|
# Search for id of root folder in gdrive database, if not found request from gdrive and store in internal database
|
|
def getEbooksFolderId(drive=None):
|
|
storedPathName = session.query(GdriveId).filter(GdriveId.path == '/').first()
|
|
if storedPathName:
|
|
return storedPathName.gdrive_id
|
|
else:
|
|
gDriveId = GdriveId()
|
|
try:
|
|
gDriveId.gdrive_id = getEbooksFolder(drive)['id']
|
|
except Exception:
|
|
log.error('Error gDrive, root ID not found')
|
|
gDriveId.path = '/'
|
|
session.merge(gDriveId)
|
|
try:
|
|
session.commit()
|
|
except OperationalError as ex:
|
|
log.error("gdrive.db DB is not Writeable")
|
|
log.debug('Database error: %s', ex)
|
|
session.rollback()
|
|
return gDriveId.gdrive_id
|
|
|
|
|
|
def getFile(pathId, fileName, drive):
|
|
metaDataFile = "'%s' in parents and trashed = false and title = '%s'" % (pathId, fileName.replace("'", r"\'"))
|
|
fileList = drive.ListFile({'q': metaDataFile}).GetList()
|
|
if fileList.__len__() == 0:
|
|
return None
|
|
else:
|
|
return fileList[0]
|
|
|
|
|
|
def getFolderId(path, drive):
|
|
# drive = getDrive(drive)
|
|
try:
|
|
currentFolderId = getEbooksFolderId(drive)
|
|
sqlCheckPath = path if path[-1] == '/' else path + '/'
|
|
storedPathName = session.query(GdriveId).filter(GdriveId.path == sqlCheckPath).first()
|
|
|
|
if not storedPathName:
|
|
dbChange = False
|
|
s = path.split('/')
|
|
for i, x in enumerate(s):
|
|
if len(x) > 0:
|
|
currentPath = "/".join(s[:i+1])
|
|
if currentPath[-1] != '/':
|
|
currentPath = currentPath + '/'
|
|
storedPathName = session.query(GdriveId).filter(GdriveId.path == currentPath).first()
|
|
if storedPathName:
|
|
currentFolderId = storedPathName.gdrive_id
|
|
else:
|
|
currentFolder = getFolderInFolder(currentFolderId, x, drive)
|
|
if currentFolder:
|
|
gDriveId = GdriveId()
|
|
gDriveId.gdrive_id = currentFolder['id']
|
|
gDriveId.path = currentPath
|
|
session.merge(gDriveId)
|
|
dbChange = True
|
|
currentFolderId = currentFolder['id']
|
|
else:
|
|
currentFolderId = None
|
|
break
|
|
if dbChange:
|
|
session.commit()
|
|
else:
|
|
currentFolderId = storedPathName.gdrive_id
|
|
except OperationalError as ex:
|
|
log.error("gdrive.db DB is not Writeable")
|
|
log.debug('Database error: %s', ex)
|
|
session.rollback()
|
|
return currentFolderId
|
|
|
|
|
|
def getFileFromEbooksFolder(path, fileName):
|
|
drive = getDrive(Gdrive.Instance().drive)
|
|
if path:
|
|
# sqlCheckPath=path if path[-1] =='/' else path + '/'
|
|
folderId = getFolderId(path, drive)
|
|
else:
|
|
folderId = getEbooksFolderId(drive)
|
|
if folderId:
|
|
return getFile(folderId, fileName, drive)
|
|
else:
|
|
return None
|
|
|
|
|
|
def moveGdriveFileRemote(origin_file_id, new_title):
|
|
origin_file_id['title']= new_title
|
|
origin_file_id.Upload()
|
|
|
|
|
|
# Download metadata.db from gdrive
|
|
def downloadFile(path, filename, output):
|
|
f = getFileFromEbooksFolder(path, filename)
|
|
f.GetContentFile(output)
|
|
|
|
|
|
def moveGdriveFolderRemote(origin_file, target_folder):
|
|
drive = getDrive(Gdrive.Instance().drive)
|
|
previous_parents = ",".join([parent["id"] for parent in origin_file.get('parents')])
|
|
children = drive.auth.service.children().list(folderId=previous_parents).execute()
|
|
gFileTargetDir = getFileFromEbooksFolder(None, target_folder)
|
|
if not gFileTargetDir:
|
|
# Folder is not existing, create, and move folder
|
|
gFileTargetDir = drive.CreateFile(
|
|
{'title': target_folder, 'parents': [{"kind": "drive#fileLink", 'id': getEbooksFolderId()}],
|
|
"mimeType": "application/vnd.google-apps.folder"})
|
|
gFileTargetDir.Upload()
|
|
# Move the file to the new folder
|
|
drive.auth.service.files().update(fileId=origin_file['id'],
|
|
addParents=gFileTargetDir['id'],
|
|
removeParents=previous_parents,
|
|
fields='id, parents').execute()
|
|
# if previous_parents has no children anymore, delete original fileparent
|
|
if len(children['items']) == 1:
|
|
deleteDatabaseEntry(previous_parents)
|
|
drive.auth.service.files().delete(fileId=previous_parents).execute()
|
|
|
|
|
|
def copyToDrive(drive, uploadFile, createRoot, replaceFiles,
|
|
ignoreFiles=None,
|
|
parent=None, prevDir=''):
|
|
ignoreFiles = ignoreFiles or []
|
|
drive = getDrive(drive)
|
|
isInitial = not bool(parent)
|
|
if not parent:
|
|
parent = getEbooksFolder(drive)
|
|
if os.path.isdir(os.path.join(prevDir,uploadFile)):
|
|
existingFolder = drive.ListFile({'q': "title = '%s' and '%s' in parents and trashed = false" %
|
|
(os.path.basename(uploadFile).replace("'", r"\'"), parent['id'])}).GetList()
|
|
if len(existingFolder) == 0 and (not isInitial or createRoot):
|
|
parent = drive.CreateFile({'title': os.path.basename(uploadFile),
|
|
'parents': [{"kind": "drive#fileLink", 'id': parent['id']}],
|
|
"mimeType": "application/vnd.google-apps.folder"})
|
|
parent.Upload()
|
|
else:
|
|
if (not isInitial or createRoot) and len(existingFolder) > 0:
|
|
parent = existingFolder[0]
|
|
for f in os.listdir(os.path.join(prevDir, uploadFile)):
|
|
if f not in ignoreFiles:
|
|
copyToDrive(drive, f, True, replaceFiles, ignoreFiles, parent, os.path.join(prevDir, uploadFile))
|
|
else:
|
|
if os.path.basename(uploadFile) not in ignoreFiles:
|
|
existingFiles = drive.ListFile({'q': "title = '%s' and '%s' in parents and trashed = false" %
|
|
(os.path.basename(uploadFile).replace("'", r"\'"), parent['id'])}).GetList()
|
|
if len(existingFiles) > 0:
|
|
driveFile = existingFiles[0]
|
|
else:
|
|
driveFile = drive.CreateFile({'title': os.path.basename(uploadFile).replace("'", r"\'"),
|
|
'parents': [{"kind":"drive#fileLink", 'id': parent['id']}], })
|
|
driveFile.SetContentFile(os.path.join(prevDir, uploadFile))
|
|
driveFile.Upload()
|
|
|
|
|
|
def uploadFileToEbooksFolder(destFile, f):
|
|
drive = getDrive(Gdrive.Instance().drive)
|
|
parent = getEbooksFolder(drive)
|
|
splitDir = destFile.split('/')
|
|
for i, x in enumerate(splitDir):
|
|
if i == len(splitDir)-1:
|
|
existingFiles = drive.ListFile({'q': "title = '%s' and '%s' in parents and trashed = false" %
|
|
(x.replace("'", r"\'"), parent['id'])}).GetList()
|
|
if len(existingFiles) > 0:
|
|
driveFile = existingFiles[0]
|
|
else:
|
|
driveFile = drive.CreateFile({'title': x,
|
|
'parents': [{"kind": "drive#fileLink", 'id': parent['id']}], })
|
|
driveFile.SetContentFile(f)
|
|
driveFile.Upload()
|
|
else:
|
|
existingFolder = drive.ListFile({'q': "title = '%s' and '%s' in parents and trashed = false" %
|
|
(x.replace("'", r"\'"), parent['id'])}).GetList()
|
|
if len(existingFolder) == 0:
|
|
parent = drive.CreateFile({'title': x, 'parents': [{"kind": "drive#fileLink", 'id': parent['id']}],
|
|
"mimeType": "application/vnd.google-apps.folder"})
|
|
parent.Upload()
|
|
else:
|
|
parent = existingFolder[0]
|
|
|
|
|
|
def watchChange(drive, channel_id, channel_type, channel_address,
|
|
channel_token=None, expiration=None):
|
|
# Watch for all changes to a user's Drive.
|
|
# Args:
|
|
# service: Drive API service instance.
|
|
# channel_id: Unique string that identifies this channel.
|
|
# channel_type: Type of delivery mechanism used for this channel.
|
|
# channel_address: Address where notifications are delivered.
|
|
# channel_token: An arbitrary string delivered to the target address with
|
|
# each notification delivered over this channel. Optional.
|
|
# channel_address: Address where notifications are delivered. Optional.
|
|
# Returns:
|
|
# The created channel if successful
|
|
# Raises:
|
|
# apiclient.errors.HttpError: if http request to create channel fails.
|
|
body = {
|
|
'id': channel_id,
|
|
'type': channel_type,
|
|
'address': channel_address
|
|
}
|
|
if channel_token:
|
|
body['token'] = channel_token
|
|
if expiration:
|
|
body['expiration'] = expiration
|
|
return drive.auth.service.changes().watch(body=body).execute()
|
|
|
|
|
|
def watchFile(drive, file_id, channel_id, channel_type, channel_address,
|
|
channel_token=None, expiration=None):
|
|
"""Watch for any changes to a specific file.
|
|
Args:
|
|
service: Drive API service instance.
|
|
file_id: ID of the file to watch.
|
|
channel_id: Unique string that identifies this channel.
|
|
channel_type: Type of delivery mechanism used for this channel.
|
|
channel_address: Address where notifications are delivered.
|
|
channel_token: An arbitrary string delivered to the target address with
|
|
each notification delivered over this channel. Optional.
|
|
channel_address: Address where notifications are delivered. Optional.
|
|
Returns:
|
|
The created channel if successful
|
|
Raises:
|
|
apiclient.errors.HttpError: if http request to create channel fails.
|
|
"""
|
|
body = {
|
|
'id': channel_id,
|
|
'type': channel_type,
|
|
'address': channel_address
|
|
}
|
|
if channel_token:
|
|
body['token'] = channel_token
|
|
if expiration:
|
|
body['expiration'] = expiration
|
|
return drive.auth.service.files().watch(fileId=file_id, body=body).execute()
|
|
|
|
|
|
def stopChannel(drive, channel_id, resource_id):
|
|
"""Stop watching to a specific channel.
|
|
Args:
|
|
service: Drive API service instance.
|
|
channel_id: ID of the channel to stop.
|
|
resource_id: Resource ID of the channel to stop.
|
|
Raises:
|
|
apiclient.errors.HttpError: if http request to create channel fails.
|
|
"""
|
|
body = {
|
|
'id': channel_id,
|
|
'resourceId': resource_id
|
|
}
|
|
return drive.auth.service.channels().stop(body=body).execute()
|
|
|
|
|
|
def getChangeById (drive, change_id):
|
|
# Print a single Change resource information.
|
|
#
|
|
# Args:
|
|
# service: Drive API service instance.
|
|
# change_id: ID of the Change resource to retrieve.
|
|
try:
|
|
change = drive.auth.service.changes().get(changeId=change_id).execute()
|
|
return change
|
|
except (errors.HttpError) as error:
|
|
log.error(error)
|
|
return None
|
|
except Exception as ex:
|
|
log.error(ex)
|
|
return None
|
|
|
|
|
|
# Deletes the local hashes database to force search for new folder names
|
|
def deleteDatabaseOnChange():
|
|
try:
|
|
session.query(GdriveId).delete()
|
|
session.commit()
|
|
except (OperationalError, InvalidRequestError) as ex:
|
|
session.rollback()
|
|
log.debug('Database error: %s', ex)
|
|
log.error(u"GDrive DB is not Writeable")
|
|
|
|
|
|
def updateGdriveCalibreFromLocal():
|
|
copyToDrive(Gdrive.Instance().drive, config.config_calibre_dir, False, True)
|
|
for x in os.listdir(config.config_calibre_dir):
|
|
if os.path.isdir(os.path.join(config.config_calibre_dir, x)):
|
|
shutil.rmtree(os.path.join(config.config_calibre_dir, x))
|
|
|
|
# update gdrive.db on edit of books title
|
|
def updateDatabaseOnEdit(ID,newPath):
|
|
sqlCheckPath = newPath if newPath[-1] == '/' else newPath + u'/'
|
|
storedPathName = session.query(GdriveId).filter(GdriveId.gdrive_id == ID).first()
|
|
if storedPathName:
|
|
storedPathName.path = sqlCheckPath
|
|
try:
|
|
session.commit()
|
|
except OperationalError as ex:
|
|
log.error("gdrive.db DB is not Writeable")
|
|
log.debug('Database error: %s', ex)
|
|
session.rollback()
|
|
|
|
|
|
# Deletes the hashes in database of deleted book
|
|
def deleteDatabaseEntry(ID):
|
|
session.query(GdriveId).filter(GdriveId.gdrive_id == ID).delete()
|
|
try:
|
|
session.commit()
|
|
except OperationalError as ex:
|
|
log.error("gdrive.db DB is not Writeable")
|
|
log.debug('Database error: %s', ex)
|
|
session.rollback()
|
|
|
|
|
|
# Gets cover file from gdrive
|
|
def get_cover_via_gdrive(cover_path):
|
|
df = getFileFromEbooksFolder(cover_path, 'cover.jpg')
|
|
if df:
|
|
if not session.query(PermissionAdded).filter(PermissionAdded.gdrive_id == df['id']).first():
|
|
df.GetPermissions()
|
|
df.InsertPermission({
|
|
'type': 'anyone',
|
|
'value': 'anyone',
|
|
'role': 'reader',
|
|
'withLink': True})
|
|
permissionAdded = PermissionAdded()
|
|
permissionAdded.gdrive_id = df['id']
|
|
session.add(permissionAdded)
|
|
try:
|
|
session.commit()
|
|
except OperationalError as ex:
|
|
log.error("gdrive.db DB is not Writeable")
|
|
log.debug('Database error: %s', ex)
|
|
session.rollback()
|
|
return df.metadata.get('webContentLink')
|
|
else:
|
|
return None
|
|
|
|
# Creates chunks for downloading big files
|
|
def partial(total_byte_len, part_size_limit):
|
|
s = []
|
|
for p in range(0, total_byte_len, part_size_limit):
|
|
last = min(total_byte_len - 1, p + part_size_limit - 1)
|
|
s.append([p, last])
|
|
return s
|
|
|
|
# downloads files in chunks from gdrive
|
|
def do_gdrive_download(df, headers, convert_encoding=False):
|
|
total_size = int(df.metadata.get('fileSize'))
|
|
download_url = df.metadata.get('downloadUrl')
|
|
s = partial(total_size, 1024 * 1024) # I'm downloading BIG files, so 100M chunk size is fine for me
|
|
|
|
def stream(convert_encoding):
|
|
for byte in s:
|
|
headers = {"Range": 'bytes=%s-%s' % (byte[0], byte[1])}
|
|
resp, content = df.auth.Get_Http_Object().request(download_url, headers=headers)
|
|
if resp.status == 206:
|
|
if convert_encoding:
|
|
result = chardet.detect(content)
|
|
content = content.decode(result['encoding']).encode('utf-8')
|
|
yield content
|
|
else:
|
|
log.warning('An error occurred: %s', resp)
|
|
return
|
|
return Response(stream_with_context(stream(convert_encoding)), headers=headers)
|
|
|
|
|
|
_SETTINGS_YAML_TEMPLATE = """
|
|
client_config_backend: settings
|
|
client_config_file: %(client_file)s
|
|
client_config:
|
|
client_id: %(client_id)s
|
|
client_secret: %(client_secret)s
|
|
redirect_uri: %(redirect_uri)s
|
|
|
|
save_credentials: True
|
|
save_credentials_backend: file
|
|
save_credentials_file: %(credential)s
|
|
|
|
get_refresh_token: True
|
|
|
|
oauth_scope:
|
|
- https://www.googleapis.com/auth/drive
|
|
"""
|
|
|
|
def update_settings(client_id, client_secret, redirect_uri):
|
|
if redirect_uri.endswith('/'):
|
|
redirect_uri = redirect_uri[:-1]
|
|
config_params = {
|
|
'client_file': CLIENT_SECRETS,
|
|
'client_id': client_id,
|
|
'client_secret': client_secret,
|
|
'redirect_uri': redirect_uri,
|
|
'credential': CREDENTIALS
|
|
}
|
|
|
|
with open(SETTINGS_YAML, 'w') as f:
|
|
f.write(_SETTINGS_YAML_TEMPLATE % config_params)
|
|
|
|
|
|
def get_error_text(client_secrets=None):
|
|
if not gdrive_support:
|
|
return 'Import of optional Google Drive requirements missing'
|
|
|
|
if not os.path.isfile(CLIENT_SECRETS):
|
|
return 'client_secrets.json is missing or not readable'
|
|
|
|
try:
|
|
with open(CLIENT_SECRETS, 'r') as settings:
|
|
filedata = json.load(settings)
|
|
except PermissionError:
|
|
return 'client_secrets.json is missing or not readable'
|
|
|
|
if 'web' not in filedata:
|
|
return 'client_secrets.json is not configured for web application'
|
|
if 'redirect_uris' not in filedata['web']:
|
|
return 'Callback url (redirect url) is missing in client_secrets.json'
|
|
if client_secrets:
|
|
client_secrets.update(filedata['web'])
|