My solution was derived from the following two sources:
- http://www.edparsons.com/2011/06/migrating-from-flickr-to-picasaweb/
- http://stackoverflow.com/questions/30474269/using-google-picasa-api-with-python
Well, here it is in its entirety:
#! /usr/bin/python
#
# requires flickrapi, gdata, and oauth2client
#
# It's a little ugly, but it is heavily tested and works!
#
#
#
# Sources:
# http://www.edparsons.com/2011/06/migrating-from-flickr-to-picasaweb/
# http://stackoverflow.com/questions/30474269/using-google-picasa-api-with-python
# https://github.com/MicOestergaard/picasawebuploader/blob/master/main.py
#
# http://photonfarmers.blogspot.ca/2013/02/flickr-to-picasa-web.html
#
import flickrapi, StringIO
import gdata
import gdata.data
import gdata.photos.service
from getpass import getpass
from urllib import urlretrieve
from tempfile import mkstemp
from threadpool import ThreadPool, WorkRequest
import os
import sys, os.path, StringIO
import time
import gdata.service
import gdata
import atom.service
import atom
import gdata.photos
import getopt
import webbrowser
import httplib2
args_opts, album_title_to_move = getopt.getopt(sys.argv[1], '')
print "Will copy " + album_title_to_move + "..."
from shutil import copyfile
from datetime import datetime, timedelta
from oauth2client.client import flow_from_clientsecrets
from oauth2client.file import Storage
from gdata.photos.service import GPHOTOS_INVALID_ARGUMENT, GPHOTOS_INVALID_CONTENT_TYPE, GooglePhotosException
video_too_large_save_location = os.path.join(os.path.sep.join(__file__.split(os.path.sep)[:-1]), 'picasa_videos')
if not os.path.exists(video_too_large_save_location):
os.mkdir(video_too_large_save_location)
class VideoEntry(gdata.photos.PhotoEntry):
pass
gdata.photos.VideoEntry = VideoEntry
def InsertVideo(self, album_or_uri, video, filename_or_handle, content_type='image/jpeg'):
"""Copy of InsertPhoto which removes protections since it *should* work"""
try:
assert(isinstance(video, VideoEntry))
except AssertionError:
raise GooglePhotosException({'status':GPHOTOS_INVALID_ARGUMENT,
'body':'`video` must be a gdata.photos.VideoEntry instance',
'reason':'Found %s, not PhotoEntry' % type(video)
})
try:
majtype, mintype = content_type.split('/')
#assert(mintype in SUPPORTED_UPLOAD_TYPES)
except (ValueError, AssertionError):
raise GooglePhotosException({'status':GPHOTOS_INVALID_CONTENT_TYPE,
'body':'This is not a valid content type: %s' % content_type,
'reason':'Accepted content types:'
})
if isinstance(filename_or_handle, (str, unicode)) and \
os.path.exists(filename_or_handle): # it's a file name
mediasource = gdata.MediaSource()
mediasource.setFile(filename_or_handle, content_type)
elif hasattr(filename_or_handle, 'read'):# it's a file-like resource
if hasattr(filename_or_handle, 'seek'):
filename_or_handle.seek(0) # rewind pointer to the start of the file
# gdata.MediaSource needs the content length, so read the whole image
file_handle = StringIO.StringIO(filename_or_handle.read())
name = 'image'
if hasattr(filename_or_handle, 'name'):
name = filename_or_handle.name
mediasource = gdata.MediaSource(file_handle, content_type,
content_length=file_handle.len, file_name=name)
else: #filename_or_handle is not valid
raise GooglePhotosException({'status':GPHOTOS_INVALID_ARGUMENT,
'body':'`filename_or_handle` must be a path name or a file-like object',
'reason':'Found %s, not path name or object with a .read() method' % \
type(filename_or_handle)
})
if isinstance(album_or_uri, (str, unicode)): # it's a uri
feed_uri = album_or_uri
elif hasattr(album_or_uri, 'GetFeedLink'): # it's a AlbumFeed object
feed_uri = album_or_uri.GetFeedLink().href
try:
return self.Post(video, uri=feed_uri, media_source=mediasource,
converter=None)
except gdata.service.RequestError, e:
raise GooglePhotosException(e.args[0])
gdata.photos.service.PhotosService.InsertVideo = InsertVideo
def clear_input_retriever(setting):
return raw_input(setting.name + ":")
def passwd_input_retriever(setting):
return getpass(setting.name + ':')
class Setting(object):
def __init__(self, name, default=None, input_retriever=clear_input_retriever, empty_value=None):
self.name = name
self._value = default
self.input_retriever = input_retriever
self.empty_value = empty_value
@property
def value(self):
while self._value == self.empty_value:
self._value = self.input_retriever(self)
return self._value
FLICKR = None
picasa_username = Setting('Picasa Username(complete email)')
picasa_username._value = ""
picasa_password = Setting('Picasa Password', input_retriever=passwd_input_retriever)
picasa_password._value = ""
picasa_oauth_client_secrets_filename = Setting('Picasa OAuth Client Secrets')
picasa_oauth_client_secrets_filename._value = 'migrate-flickr-to-picasa.secrets'
flickr_api_key = Setting('Flickr API Key')
flickr_api_key._value = ""
flickr_api_secret = Setting('Flickr API Secret')
flickr_api_secret._value = ""
flickr_usernsid = None
def flickr_token_retriever(setting):
global FLICKR
global flickr_usernsid
if FLICKR is None:
FLICKR = flickrapi.FlickrAPI(flickr_api_key.value, flickr_api_secret.value)
(token, frob) = FLICKR.get_token_part_one(perms='write')
if not token: raw_input("Press ENTER after you authorized this program")
FLICKR.get_token_part_two((token, frob))
flickr_usernsid = FLICKR.auth_checkToken(auth_token=token).find('auth').find('user').get('nsid')
return True
def get_gd_client():
gd_client = gdata.photos.service.PhotosService()
gd_client.email = picasa_username.value
gd_client.password = picasa_password.value
gd_client.source = 'migrate-flickr-to-picasa.py'
gd_client.ProgrammaticLogin()
return gd_client
#
# Source: http://stackoverflow.com/questions/30474269/using-google-picasa-api-with-python
#
def OAuth2Login(client_secrets, credential_store, email):
scope='https://picasaweb.google.com/data/'
user_agent='myapp'
storage = Storage(credential_store)
credentials = storage.get()
if credentials is None or credentials.invalid:
flow = flow_from_clientsecrets(client_secrets, scope=scope, redirect_uri='urn:ietf:wg:oauth:2.0:oob')
uri = flow.step1_get_authorize_url()
webbrowser.open(uri)
code = raw_input('Enter the authentication code: ').strip()
credentials = flow.step2_exchange(code)
storage.put(credentials)
if (credentials.token_expiry - datetime.utcnow()) < timedelta(minutes=5):
http = httplib2.Http()
http = credentials.authorize(http)
credentials.refresh(http)
gd_client = gdata.photos.service.PhotosService(source=user_agent,
email=email,
additional_headers={'Authorization' : 'Bearer %s' % credentials.access_token})
return gd_client
def do_migration(threadpoolsize=7):
print 'Authenticating with Picasa...'
#gd_client = get_gd_client()
gd_client = OAuth2Login(picasa_oauth_client_secrets_filename.value, 'migrate-flickr-to-picasa.store', picasa_username.value)
print 'Authenticating with Flickr..'
flickr_token = Setting('Flickr Token', input_retriever=flickr_token_retriever)
token = flickr_token.value # force retrieval of authentication information...
tmp_sets = FLICKR.photosets_getList().find('photosets').getchildren()
sets = []
for aset_id in range(len(tmp_sets)): # go through each flickr set
aset = tmp_sets[aset_id]
set_title = aset.find('title').text
# Transfer only this one photo set ...
if set_title == album_title_to_move:
sets = [ aset ]
break
print 'Found %i sets to move over to Picasa.' % len(sets)
def get_picasa_albums(id, aset, num_photos):
all_picasa_albums = gd_client.GetUserFeed(user=picasa_username.value).entry
picasa_albums = []
id = id.strip()
orig_id = id
for i in range((num_photos/1000) + 1):
if i > 0:
id = orig_id + '-' + str(i)
picasa_album = None
for album in all_picasa_albums:
if album.title.text == id:
picasa_album = album
break
if picasa_album is not None:
print '"%s" set already exists as an album in Picasa.' % id
else:
picasa_album = gd_client.InsertAlbum(title=id, summary=aset.find('description').text, access='protected')
print 'Created picasa album "%s".' % picasa_album.title.text
picasa_albums.append(picasa_album)
return picasa_albums
def get_picasa_photos(picasa_albums):
photos = []
for album in picasa_albums:
photos.extend(gd_client.GetFeed(album.GetFeedLink().href).entry)
return photos
def get_photo_url(photo):
if photo.get('media') == 'video':
return "http://www.flickr.com/photos/%s/%s/play/orig/%s" % (flickr_usernsid, photo.get('id'), photo.get('originalsecret'))
else:
return photo.get('url_o')
def move_photo(flickr_photo, picasa_album):
def download_callback(count, blocksize, totalsize):
download_stat_print = set((0.0, .25, .5, 1.0))
downloaded = float(count*blocksize)
res = int((downloaded/totalsize)*100.0)
for st in download_stat_print:
dl = totalsize*st
diff = downloaded - dl
if diff >= -(blocksize/2) and diff <= (blocksize/2):
downloaded_so_far = float(count*blocksize)/1024.0/1024.0
total_size_in_mb = float(totalsize)/1024.0/1024.0
print "photo: %s, album: %s --- %i%% - %.1f/%.1fmb" % (flickr_photo.get('title'), picasa_album.title.text, res, downloaded_so_far, total_size_in_mb)
dest = os.path.join(video_too_large_save_location, flickr_photo.get('title'))
if os.path.exists(dest):
print 'Video "%s" of "%s" already exists in download cache of files over 100MB. Aborting download.' % (flickr_photo.get('title'), picasa_album.title.text)
return
photo_url = get_photo_url(flickr_photo)
print 'Downloading photo "%s" at url "%s".' % (flickr_photo.get('title'), photo_url)
(fd, filename) = tmp_file = mkstemp()
(filename, headers) = urlretrieve(photo_url, filename, download_callback)
print 'Download Finished of %s for album %s at %s.' % (flickr_photo.get('title'), picasa_album.title.text, photo_url)
size = os.stat(filename)[6]
if size >= 100*1024*1024:
print 'File "%s" of set "%s" larger than 100mb. Moving to download directory for manual handling. ' % (flickr_photo.get('title'), picasa_album.title.text)
copyfile(filename, dest)
os.close(fd)
os.remove(filename)
return
print 'Uploading photo %s of album %s to Picasa.' % (flickr_photo.get('title'), picasa_album.title.text)
if flickr_photo.get('media') == 'photo':
picasa_photo = gdata.photos.PhotoEntry()
else:
picasa_photo = VideoEntry()
picasa_photo.title = atom.Title(text=flickr_photo.get('title'))
picasa_photo.summary = atom.Summary(text=flickr_photo.get('description'), summary_type='text')
photo_info = FLICKR.photos_getInfo(photo_id=flickr_photo.get('id')).find('photo')
picasa_photo.media.keywords = gdata.media.Keywords()
picasa_photo.media.keywords.text = ', '.join([t.get('raw') for t in photo_info.find('tags').getchildren()])
picasa_photo.summary.text = photo_info.find('description').text
if flickr_photo.get('media') == 'photo':
gd_client.InsertPhoto(picasa_album, picasa_photo, filename, content_type=headers.get('content-type', 'image/jpeg'))
else:
gd_client.InsertVideo(picasa_album, picasa_photo, filename, content_type=headers.get('content-type', 'video/avi'))
print 'Upload Finished of %s for album %s.' % (flickr_photo.get('title'), picasa_album.title.text)
os.close(fd)
os.remove(filename)
threadpool = ThreadPool(threadpoolsize)
for aset_id in range(len(sets)): # go through each flickr set
aset = sets[aset_id]
set_title = aset.find('title').text
print 'Moving "%s" set over to a picasa album. %i/%i' % (set_title, aset_id + 1, len(sets))
print 'Gathering set "%s" information.' % set_title
num_photos = int(aset.get('photos')) + int(aset.get('videos'))
all_photos = []
page = 1
while len(all_photos) < num_photos:
all_photos.extend(
FLICKR.photosets_getPhotos(
photoset_id=aset.get('id'),
per_page=500,
extras="url_o,media,original_format",
page=page,
media='all'
).find('photoset').getchildren()
)
page += 1
print 'Found %i photos and videos in the %s flickr set.' % (num_photos, set_title)
picasa_albums = get_picasa_albums(set_title, aset, len(all_photos))
picasa_photos = get_picasa_photos(picasa_albums)
for photo_id in range(len(all_photos)):
photo = all_photos[photo_id]
photo_found = False
for p_photo in picasa_photos:
if p_photo.title.text == photo.get('title'):
print 'Already have photo "%s", skipping' % photo.get('title')
photo_found = True
break
if photo_found:
continue
else:
print 'Queuing photo %i/%i, %s of album %s for moving.' % (photo_id + 1, len(all_photos), photo.get('title'), set_title)
p_album = None
for album in picasa_albums:
if int(album.numphotosremaining.text) > 0:
album.numphotosremaining.text = str(int(album.numphotosremaining.text) - 1)
p_album = album
break
req = WorkRequest(move_photo, [photo, p_album], {})
threadpool.putRequest(req)
threadpool.wait()
if __name__ == "__main__":
print """
This script will move all the photos and sets from flickr over to picasa.
That will require getting authentication information from both services...
"""
do_migration()
I hope this will save someone else a bit of grief.
