#!/usr/bin/python
#
# Copyright (C) 2006 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""CalendarService extends the GDataService to streamline Google Calendar operations.
CalendarService: Provides methods to query feeds and manipulate items. Extends
GDataService.
DictionaryToParamList: Function which converts a dictionary into a list of
URL arguments (represented as strings). This is a
utility function used in CRUD operations.
"""
__author__ = 'api.vli (Vivian Li)'
import urllib
import gdata
import atom.service
import gdata.service
import gdata.calendar
import atom
DEFAULT_BATCH_URL = ('http://www.google.com/calendar/feeds/default/private'
'/full/batch')
class Error(Exception):
pass
class RequestError(Error):
pass
class CalendarService(gdata.service.GDataService):
"""Client for the Google Calendar service."""
def __init__(self, email=None, password=None, source=None,
server='www.google.com', additional_headers=None, **kwargs):
"""Creates a client for the Google Calendar service.
Args:
email: string (optional) The user's email address, used for
authentication.
password: string (optional) The user's password.
source: string (optional) The name of the user's application.
server: string (optional) The name of the server to which a connection
will be opened. Default value: 'www.google.com'.
**kwargs: The other parameters to pass to gdata.service.GDataService
constructor.
"""
gdata.service.GDataService.__init__(
self, email=email, password=password, service='cl', source=source,
server=server, additional_headers=additional_headers, **kwargs)
def GetCalendarEventFeed(self, uri='/calendar/feeds/default/private/full'):
return self.Get(uri, converter=gdata.calendar.CalendarEventFeedFromString)
def GetCalendarEventEntry(self, uri):
return self.Get(uri, converter=gdata.calendar.CalendarEventEntryFromString)
def GetCalendarListFeed(self, uri='/calendar/feeds/default/allcalendars/full'):
return self.Get(uri, converter=gdata.calendar.CalendarListFeedFromString)
def GetAllCalendarsFeed(self, uri='/calendar/feeds/default/allcalendars/full'):
return self.Get(uri, converter=gdata.calendar.CalendarListFeedFromString)
def GetOwnCalendarsFeed(self, uri='/calendar/feeds/default/owncalendars/full'):
return self.Get(uri, converter=gdata.calendar.CalendarListFeedFromString)
def GetCalendarListEntry(self, uri):
return self.Get(uri, converter=gdata.calendar.CalendarListEntryFromString)
def GetCalendarAclFeed(self, uri='/calendar/feeds/default/acl/full'):
return self.Get(uri, converter=gdata.calendar.CalendarAclFeedFromString)
def GetCalendarAclEntry(self, uri):
return self.Get(uri, converter=gdata.calendar.CalendarAclEntryFromString)
def GetCalendarEventCommentFeed(self, uri):
return self.Get(uri, converter=gdata.calendar.CalendarEventCommentFeedFromString)
def GetCalendarEventCommentEntry(self, uri):
return self.Get(uri, converter=gdata.calendar.CalendarEventCommentEntryFromString)
def Query(self, uri, converter=None):
"""Performs a query and returns a resulting feed or entry.
Args:
feed: string The feed which is to be queried
Returns:
On success, a GDataFeed or Entry depending on which is sent from the
server.
On failure, a RequestError is raised of the form:
{'status': HTTP status code from server,
'reason': HTTP reason from the server,
'body': HTTP body of the server's response}
"""
if converter:
result = self.Get(uri, converter=converter)
else:
result = self.Get(uri)
return result
def CalendarQuery(self, query):
if isinstance(query, CalendarEventQuery):
return self.Query(query.ToUri(),
converter=gdata.calendar.CalendarEventFeedFromString)
elif isinstance(query, CalendarListQuery):
return self.Query(query.ToUri(),
converter=gdata.calendar.CalendarListFeedFromString)
elif isinstance(query, CalendarEventCommentQuery):
return self.Query(query.ToUri(),
converter=gdata.calendar.CalendarEventCommentFeedFromString)
else:
return self.Query(query.ToUri())
def InsertEvent(self, new_event, insert_uri, url_params=None,
escape_params=True):
"""Adds an event to Google Calendar.
Args:
new_event: atom.Entry or subclass A new event which is to be added to
Google Calendar.
insert_uri: the URL to post new events to the feed
url_params: dict (optional) Additional URL parameters to be included
in the insertion request.
escape_params: boolean (optional) If true, the url_parameters will be
escaped before they are included in the request.
Returns:
On successful insert, an entry containing the event created
On failure, a RequestError is raised of the form:
{'status': HTTP status code from server,
'reason': HTTP reason from the server,
'body': HTTP body of the server's response}
"""
return self.Post(new_event, insert_uri, url_params=url_params,
escape_params=escape_params,
converter=gdata.calendar.CalendarEventEntryFromString)
def InsertCalendarSubscription(self, calendar, url_params=None,
escape_params=True):
"""Subscribes the authenticated user to the provided calendar.
Args:
calendar: The calendar to which the user should be subscribed.
url_params: dict (optional) Additional URL parameters to be included
in the insertion request.
escape_params: boolean (optional) If true, the url_parameters will be
escaped before they are included in the request.
Returns:
On successful insert, an entry containing the subscription created
On failure, a RequestError is raised of the form:
{'status': HTTP status code from server,
'reason': HTTP reason from the server,
'body': HTTP body of the server's response}
"""
insert_uri = '/calendar/feeds/default/allcalendars/full'
return self.Post(calendar, insert_uri, url_params=url_params,
escape_params=escape_params,
converter=gdata.calendar.CalendarListEntryFromString)
def InsertCalendar(self, new_calendar, url_params=None,
escape_params=True):
"""Creates a new calendar.
Args:
new_calendar: The calendar to be created
url_params: dict (optional) Additional URL parameters to be included
in the insertion request.
escape_params: boolean (optional) If true, the url_parameters will be
escaped before they are included in the request.
Returns:
On successful insert, an entry containing the calendar created
On failure, a RequestError is raised of the form:
{'status': HTTP status code from server,
'reason': HTTP reason from the server,
'body': HTTP body of the server's response}
"""
insert_uri = '/calendar/feeds/default/owncalendars/full'
response = self.Post(new_calendar, insert_uri, url_params=url_params,
escape_params=escape_params,
converter=gdata.calendar.CalendarListEntryFromString)
return response
def UpdateCalendar(self, calendar, url_params=None,
escape_params=True):
"""Updates a calendar.
Args:
calendar: The calendar which should be updated
url_params: dict (optional) Additional URL parameters to be included
in the insertion request.
escape_params: boolean (optional) If true, the url_parameters will be
escaped before they are included in the request.
Returns:
On successful insert, an entry containing the calendar created
On failure, a RequestError is raised of the form:
{'status': HTTP status code from server,
'reason': HTTP reason from the server,
'body': HTTP body of the server's response}
"""
update_uri = calendar.GetEditLink().href
response = self.Put(data=calendar, uri=update_uri, url_params=url_params,
escape_params=escape_params,
converter=gdata.calendar.CalendarListEntryFromString)
return response
def InsertAclEntry(self, new_entry, insert_uri, url_params=None,
escape_params=True):
"""Adds an ACL entry (rule) to Google Calendar.
Args:
new_entry: atom.Entry or subclass A new ACL entry which is to be added to
Google Calendar.
insert_uri: the URL to post new entries to the ACL feed
url_params: dict (optional) Additional URL parameters to be included
in the insertion request.
escape_params: boolean (optional) If true, the url_parameters will be
escaped before they are included in the request.
Returns:
On successful insert, an entry containing the ACL entry created
On failure, a RequestError is raised of the form:
{'status': HTTP status code from server,
'reason': HTTP reason from the server,
'body': HTTP body of the server's response}
"""
return self.Post(new_entry, insert_uri, url_params=url_params,
escape_params=escape_params,
converter=gdata.calendar.CalendarAclEntryFromString)
def InsertEventComment(self, new_entry, insert_uri, url_params=None,
escape_params=True):
"""Adds an entry to Google Calendar.
Args:
new_entry: atom.Entry or subclass A new entry which is to be added to
Google Calendar.
insert_uri: the URL to post new entrys to the feed
url_params: dict (optional) Additional URL parameters to be included
in the insertion request.
escape_params: boolean (optional) If true, the url_parameters will be
escaped before they are included in the request.
Returns:
On successful insert, an entry containing the comment created
On failure, a RequestError is raised of the form:
{'status': HTTP status code from server,
'reason': HTTP reason from the server,
'body': HTTP body of the server's response}
"""
return self.Post(new_entry, insert_uri, url_params=url_params,
escape_params=escape_params,
converter=gdata.calendar.CalendarEventCommentEntryFromString)
def _RemoveStandardUrlPrefix(self, url):
url_prefix = 'http://%s/' % self.server
if url.startswith(url_prefix):
return url[len(url_prefix) - 1:]
return url
def DeleteEvent(self, edit_uri, extra_headers=None,
url_params=None, escape_params=True):
"""Removes an event with the specified ID from Google Calendar.
Args:
edit_uri: string The edit URL of the entry to be deleted. Example:
'http://www.google.com/calendar/feeds/default/private/full/abx'
url_params: dict (optional) Additional URL parameters to be included
in the deletion request.
escape_params: boolean (optional) If true, the url_parameters will be
escaped before they are included in the request.
Returns:
On successful delete, a httplib.HTTPResponse containing the server's
response to the DELETE request.
On failure, a RequestError is raised of the form:
{'status': HTTP status code from server,
'reason': HTTP reason from the server,
'body': HTTP body of the server's response}
"""
edit_uri = self._RemoveStandardUrlPrefix(edit_uri)
return self.Delete('%s' % edit_uri,
url_params=url_params, escape_params=escape_params)
def DeleteAclEntry(self, edit_uri, extra_headers=None,
url_params=None, escape_params=True):
"""Removes an ACL entry at the given edit_uri from Google Calendar.
Args:
edit_uri: string The edit URL of the entry to be deleted. Example:
'http://www.google.com/calendar/feeds/liz%40gmail.com/acl/full/default'
url_params: dict (optional) Additional URL parameters to be included
in the deletion request.
escape_params: boolean (optional) If true, the url_parameters will be
escaped before they are included in the request.
Returns:
On successful delete, a httplib.HTTPResponse containing the server's
response to the DELETE request.
On failure, a RequestError is raised of the form:
{'status': HTTP status code from server,
'reason': HTTP reason from the server,
'body': HTTP body of the server's response}
"""
edit_uri = self._RemoveStandardUrlPrefix(edit_uri)
return self.Delete('%s' % edit_uri,
url_params=url_params, escape_params=escape_params)
def DeleteCalendarEntry(self, edit_uri, extra_headers=None,
url_params=None, escape_params=True):
"""Removes a calendar entry at the given edit_uri from Google Calendar.
Args:
edit_uri: string The edit URL of the entry to be deleted. Example:
'http://www.google.com/calendar/feeds/default/allcalendars/abcdef@group.calendar.google.com'
url_params: dict (optional) Additional URL parameters to be included
in the deletion request.
escape_params: boolean (optional) If true, the url_parameters will be
escaped before they are included in the request.
Returns:
On successful delete, True is returned
On failure, a RequestError is raised of the form:
{'status': HTTP status code from server,
'reason': HTTP reason from the server,
'body': HTTP body of the server's response}
"""
return self.Delete(edit_uri, url_params=url_params,
escape_params=escape_params)
def UpdateEvent(self, edit_uri, updated_event, url_params=None,
escape_params=True):
"""Updates an existing event.
Args:
edit_uri: string The edit link URI for the element being updated
updated_event: string, atom.Entry, or subclass containing
the Atom Entry which will replace the event which is
stored at the edit_url
url_params: dict (optional) Additional URL parameters to be included
in the update request.
escape_params: boolean (optional) If true, the url_parameters will be
escaped before they are included in the request.
Returns:
On successful update, a httplib.HTTPResponse containing the server's
response to the PUT request.
On failure, a RequestError is raised of the form:
{'status': HTTP status code from server,
'reason': HTTP reason from the server,
'body': HTTP body of the server's response}
"""
edit_uri = self._RemoveStandardUrlPrefix(edit_uri)
return self.Put(updated_event, '%s' % edit_uri,
url_params=url_params,
escape_params=escape_params,
converter=gdata.calendar.CalendarEventEntryFromString)
def UpdateAclEntry(self, edit_uri, updated_rule, url_params=None,
escape_params=True):
"""Updates an existing ACL rule.
Args:
edit_uri: string The edit link URI for the element being updated
updated_rule: string, atom.Entry, or subclass containing
the Atom Entry which will replace the event which is
stored at the edit_url
url_params: dict (optional) Additional URL parameters to be included
in the update request.
escape_params: boolean (optional) If true, the url_parameters will be
escaped before they are included in the request.
Returns:
On successful update, a httplib.HTTPResponse containing the server's
response to the PUT request.
On failure, a RequestError is raised of the form:
{'status': HTTP status code from server,
'reason': HTTP reason from the server,
'body': HTTP body of the server's response}
"""
edit_uri = self._RemoveStandardUrlPrefix(edit_uri)
return self.Put(updated_rule, '%s' % edit_uri,
url_params=url_params,
escape_params=escape_params,
converter=gdata.calendar.CalendarAclEntryFromString)
def ExecuteBatch(self, batch_feed, url,
converter=gdata.calendar.CalendarEventFeedFromString):
"""Sends a batch request feed to the server.
The batch request needs to be sent to the batch URL for a particular
calendar. You can find the URL by calling GetBatchLink().href on the
CalendarEventFeed.
Args:
batch_feed: gdata.calendar.CalendarEventFeed A feed containing batch
request entries. Each entry contains the operation to be performed
on the data contained in the entry. For example an entry with an
operation type of insert will be used as if the individual entry
had been inserted.
url: str The batch URL for the Calendar to which these operations should
be applied.
converter: Function (optional) The function used to convert the server's
response to an object. The default value is
CalendarEventFeedFromString.
Returns:
The results of the batch request's execution on the server. If the
default converter is used, this is stored in a CalendarEventFeed.
"""
return self.Post(batch_feed, url, converter=converter)
class CalendarEventQuery(gdata.service.Query):
def __init__(self, user='default', visibility='private', projection='full',
text_query=None, params=None, categories=None):
gdata.service.Query.__init__(self,
feed='http://www.google.com/calendar/feeds/%s/%s/%s' % (
urllib.quote(user),
urllib.quote(visibility),
urllib.quote(projection)),
text_query=text_query, params=params, categories=categories)
def _GetStartMin(self):
if 'start-min' in self.keys():
return self['start-min']
else:
return None
def _SetStartMin(self, val):
self['start-min'] = val
start_min = property(_GetStartMin, _SetStartMin,
doc="""The start-min query parameter""")
def _GetStartMax(self):
if 'start-max' in self.keys():
return self['start-max']
else:
return None
def _SetStartMax(self, val):
self['start-max'] = val
start_max = property(_GetStartMax, _SetStartMax,
doc="""The start-max query parameter""")
def _GetOrderBy(self):
if 'orderby' in self.keys():
return self['orderby']
else:
return None
def _SetOrderBy(self, val):
if val is not 'lastmodified' and val is not 'starttime':
raise Error, "Order By must be either 'lastmodified' or 'starttime'"
self['orderby'] = val
orderby = property(_GetOrderBy, _SetOrderBy,
doc="""The orderby query parameter""")
def _GetSortOrder(self):
if 'sortorder' in self.keys():
return self['sortorder']
else:
return None
def _SetSortOrder(self, val):
if (val is not 'ascending' and val is not 'descending'
and val is not 'a' and val is not 'd' and val is not 'ascend'
and val is not 'descend'):
raise Error, "Sort order must be either ascending, ascend, " + (
"a or descending, descend, or d")
self['sortorder'] = val
sortorder = property(_GetSortOrder, _SetSortOrder,
doc="""The sortorder query parameter""")
def _GetSingleEvents(self):
if 'singleevents' in self.keys():
return self['singleevents']
else:
return None
def _SetSingleEvents(self, val):
self['singleevents'] = val
singleevents = property(_GetSingleEvents, _SetSingleEvents,
doc="""The singleevents query parameter""")
def _GetFutureEvents(self):
if 'futureevents' in self.keys():
return self['futureevents']
else:
return None
def _SetFutureEvents(self, val):
self['futureevents'] = val
futureevents = property(_GetFutureEvents, _SetFutureEvents,
doc="""The futureevents query parameter""")
def _GetRecurrenceExpansionStart(self):
if 'recurrence-expansion-start' in self.keys():
return self['recurrence-expansion-start']
else:
return None
def _SetRecurrenceExpansionStart(self, val):
self['recurrence-expansion-start'] = val
recurrence_expansion_start = property(_GetRecurrenceExpansionStart,
_SetRecurrenceExpansionStart,
doc="""The recurrence-expansion-start query parameter""")
def _GetRecurrenceExpansionEnd(self):
if 'recurrence-expansion-end' in self.keys():
return self['recurrence-expansion-end']
else:
return None
def _SetRecurrenceExpansionEnd(self, val):
self['recurrence-expansion-end'] = val
recurrence_expansion_end = property(_GetRecurrenceExpansionEnd,
_SetRecurrenceExpansionEnd,
doc="""The recurrence-expansion-end query parameter""")
def _SetTimezone(self, val):
self['ctz'] = val
def _GetTimezone(self):
if 'ctz' in self.keys():
return self['ctz']
else:
return None
ctz = property(_GetTimezone, _SetTimezone,
doc="""The ctz query parameter which sets report time on the server.""")
class CalendarListQuery(gdata.service.Query):
"""Queries the Google Calendar meta feed"""
def __init__(self, userId=None, text_query=None,
params=None, categories=None):
if userId is None:
userId = 'default'
gdata.service.Query.__init__(self, feed='http://www.google.com/calendar/feeds/'
+userId,
text_query=text_query, params=params,
categories=categories)
class CalendarEventCommentQuery(gdata.service.Query):
"""Queries the Google Calendar event comments feed"""
def __init__(self, feed=None):
gdata.service.Query.__init__(self, feed=feed)