8 logger = logging.getLogger('gooswapper')
9 logger.setLevel(logging.INFO)
10 consolelog = logging.StreamHandler()
11 consolelog.setLevel(logging.INFO)
12 logformatter = logging.Formatter('%(name)s - %(levelname)s - %(message)s')
13 consolelog.setFormatter(logformatter)
14 logger.addHandler(consolelog)
15 #We can't use this, because that way all the libraries' logs spam us
16 #logging.basicConfig(level=logging.INFO)
18 #Exchange-related library
19 sys.path.append("/upstreams/exchangelib")
22 #Google calendar-api libraries
24 import apiclient.discovery
26 import oauth2client.file
27 import oauth2client.client
29 #Not sure what the distribution approach here is...
30 gcal_client_id = '805127902516-ptbbtgpq9o8pjr6r3k6hsm60j589o85u.apps.googleusercontent.com'
31 gcal_client_secret = '8hpdxV3MauorryTDoZ1YK8JO'
33 #scope URL for r/w calendar access
34 scope = 'https://www.googleapis.com/auth/calendar'
35 #flow object, for doing OAuth2.0 stuff
36 flow = oauth2client.client.OAuth2WebServerFlow(gcal_client_id,
41 gcal_authpath=".gooswap_gcal_creds.dat"
43 cachepath=".gooswapcache"
45 exchange_credential = None
47 class ex_gcal_link(exchangelib.ExtendedProperty):
48 distinguished_property_set_id = 'PublicStrings'
49 property_name = "google calendar event id"
50 property_type = 'String'
52 exchangelib.CalendarItem.register('gcal_link',ex_gcal_link)
54 def get_ex_event_by_itemid(calendar,itemid):
55 return calendar.get(item_id=itemid)
57 def get_ex_event_by_id_and_changekey(acct,itemid,changekey):
58 l=list(acct.fetch([(itemid,changekey)]))
59 return list(acct.fetch([(itemid,changekey)]))[0]
61 def get_ex_cred(username="SANGER\mv3",password=None):
63 password = getpass.getpass(prompt="Password for user %s: " % username)
64 return exchangelib.ServiceAccount(username,password)
66 def ex_login(emailaddr,autodiscover=True):
67 global exchange_credential
68 if exchange_credential is None:
69 exchange_credential = get_ex_cred()
70 return exchangelib.Account(emailaddr,
71 credentials = exchange_credential,
72 autodiscover = autodiscover)
74 def get_ex_events(calendar):
76 for event in calendar.all().only('changekey','item_id','gcal_link'):
77 if event.gcal_link is not None:
80 if event.item_id in ans:
81 logger.warning("Event item_id %s was duplicated!" % event.item_id)
82 ans[event.item_id] = event.changekey
83 logger.info("%d events found" % len(ans))
86 def ex_event_changes(old,new):
87 olds = set(old.keys())
88 news = set(new.keys())
89 added = list(news-olds)
90 deleted = list(olds-news)
92 #intersection - i.e. common to both sets
93 for event in olds & news:
94 if old[event] != new[event]:
96 logger.info("%d events updated, %d added, %d deleted" % (len(changed),
99 return added, deleted, changed
101 #XXX doesn't work - cf https://github.com/ecederstrand/exchangelib/issues/492
102 def add_ex_to_gcal_needs_ev_id(ex_cal,events):
105 event = get_ex_event_by_uid(ex_cal,ev_id)
106 event.gcal_link = "Testing"
109 def add_ex_to_gcal(ex_acct,
110 gcal_acct,gcal_tz,events,
114 event = get_ex_event_by_itemid(ex_acct.calendar,ev_id)
117 gevent["summary"]=event.subject
118 gevent["end"]={"date": str(event.end.astimezone(gcal_tz).date())}
119 gevent["start"]={"date": str(event.start.astimezone(gcal_tz).date())}
120 if event.text_body.strip() != '':
121 gevent["description"] = event.text_body
122 if event.location is not None:
123 gevent["location"] = event.location
124 gevent["extended_properties"]={"shared": {"ex_id": event.item_id}}
125 gevent=gcal_acct.events().insert(calendarId=gcal_id, body=gevent).execute()
126 event.gcal_link = gevent.get("id")
128 events[event.item_id] = event.changekey
130 logger.warning("only all-day events supported")
133 #each such file can only store a single credential
134 storage = oauth2client.file.Storage(gcal_authpath)
135 gcal_credential = storage.get()
136 #if no credential found, or they're invalid (e.g. expired),
137 #then get a new one; pass --noauth_local_webserver on the command line
138 #if you don't want it to spawn a browser
139 if gcal_credential is None or gcal_credential.invalid:
140 gcal_credential = oauth2client.tools.run_flow(flow,
142 oauth2client.tools.argparser.parse_args())
143 return gcal_credential
146 gcal_credential = get_gcal_cred()
147 # Object to handle http requests; could add proxy details
148 http = httplib2.Http()
149 http = gcal_credential.authorize(http)
150 return apiclient.discovery.build('calendar', 'v3', http=http)
152 def get_gcal_timezone(gcal_account,calendarid="primary"):
153 gcal = gcal_account.calendars().get(calendarId=calendarid).execute()
154 return exchangelib.EWSTimeZone.timezone(gcal['timeZone'])
158 with open(cachepath,"rb") as f:
159 cache = pickle.load(f)
160 except FileNotFoundError:
163 ex_account = ex_login("mv3@sanger.ac.uk")
164 current = get_ex_events(ex_account.calendar)
166 gcal_account = gcal_login()
167 gcal_tz = get_gcal_timezone(gcal_account)
169 if cache is not None:
170 added,deleted,changed = ex_event_changes(cache,current)
171 add_ex_to_gcal(ex_account,gcal_account,gcal_tz,current,added)
173 with open(cachepath,"wb") as f:
174 pickle.dump(current,f)
176 if __name__ == "__main__":