def getCacheEntry(cls, calresource, useruid, timerange):
key = str(calresource.id()) + "/" + useruid
token = (yield calresource.syncToken())
entry = (yield cls.fbcacher.get(key))
if entry:
# Offset one day at either end to account for floating
entry_timerange = Period.parseText(entry.timerange)
cached_start = entry_timerange.getStart() + Duration(
days=cls.CACHE_DAYS_FLOATING_ADJUST)
cached_end = entry_timerange.getEnd() - Duration(
days=cls.CACHE_DAYS_FLOATING_ADJUST)
# Verify that the requested time range lies within the cache time range
if compareDateTime(timerange.getEnd(),
cached_end) <= 0 and compareDateTime(
timerange.getStart(), cached_start) >= 0:
# Verify that cached entry is still valid
if token == entry.token:
returnValue(entry.fbresults)
returnValue(None)
def getCacheEntry(cls, calresource, useruid, timerange):
key = str(calresource.id()) + "/" + useruid
token = (yield calresource.syncToken())
entry = (yield fbcacher.get(key))
if entry:
# Offset one day at either end to account for floating
cached_start = entry.timerange.start + PyCalendarDuration(days=FBCacheEntry.CACHE_DAYS_FLOATING_ADJUST)
cached_end = entry.timerange.end - PyCalendarDuration(days=FBCacheEntry.CACHE_DAYS_FLOATING_ADJUST)
# Verify that the requested time range lies within the cache time range
if compareDateTime(timerange.end, cached_end) <= 0 and compareDateTime(timerange.start, cached_start) >= 0:
# Verify that cached entry is still valid
if token == entry.token:
returnValue(entry.fbresults)
returnValue(None)
def getCacheEntry(cls, calresource, useruid, timerange):
key = calresource.resourceID() + "/" + useruid
token = (yield calresource.getInternalSyncToken())
entry = (yield fbcacher.get(key))
if entry:
# Offset one day at either end to account for floating
cached_start = entry.timerange.start + Duration(
days=FBCacheEntry.CACHE_DAYS_FLOATING_ADJUST)
cached_end = entry.timerange.end - Duration(
days=FBCacheEntry.CACHE_DAYS_FLOATING_ADJUST)
# Verify that the requested timerange lies within the cache timerange
if compareDateTime(timerange.end,
cached_end) <= 0 and compareDateTime(
timerange.start, cached_start) >= 0:
# Verify that cached entry is still valid
if token == entry.token:
returnValue(entry.fbresults)
returnValue(None)
def _matchCalendarResources(self, calresource):
# Get the timezone property from the collection.
tz = calresource.getTimezone()
# Try cache
aggregated_resources = (yield FBCacheEntry.getCacheEntry(calresource, self.attendee_uid, self.timerange)) if config.EnableFreeBusyCache else None
if aggregated_resources is None:
if self.accountingItems is not None:
self.accountingItems["fb-uncached"] = self.accountingItems.get("fb-uncached", 0) + 1
caching = False
if config.EnableFreeBusyCache:
# Log extended item
if self.logItems is not None:
self.logItems["fb-uncached"] = self.logItems.get("fb-uncached", 0) + 1
# We want to cache a large range of time based on the current date
cache_start = normalizeToUTC(DateTime.getToday() + Duration(days=0 - config.FreeBusyCacheDaysBack))
cache_end = normalizeToUTC(DateTime.getToday() + Duration(days=config.FreeBusyCacheDaysForward))
# If the requested time range would fit in our allowed cache range, trigger the cache creation
if compareDateTime(self.timerange.getStart(), cache_start) >= 0 and compareDateTime(self.timerange.getEnd(), cache_end) <= 0:
cache_timerange = Period(cache_start, cache_end)
caching = True
#
# What we do is a fake calendar-query for VEVENT/VFREEBUSYs in the specified time-range.
# We then take those results and merge them into one VFREEBUSY component
# with appropriate FREEBUSY properties, and return that single item as iCal data.
#
# Create fake filter element to match time-range
tr = TimeRange(
start=(cache_timerange if caching else self.timerange).getStart().getText(),
end=(cache_timerange if caching else self.timerange).getEnd().getText(),
)
filter = caldavxml.Filter(
caldavxml.ComponentFilter(
caldavxml.ComponentFilter(
tr,
name=("VEVENT", "VFREEBUSY", "VAVAILABILITY"),
),
name="VCALENDAR",
)
)
filter = Filter(filter)
tzinfo = filter.settimezone(tz)
if self.accountingItems is not None:
self.accountingItems["fb-query-timerange"] = (str(tr.start), str(tr.end),)
try:
resources = yield calresource.search(filter, useruid=self.attendee_uid, fbtype=True)
aggregated_resources = {}
for name, uid, comptype, test_organizer, float, start, end, fbtype, transp in resources:
if transp == 'T' and fbtype != '?':
fbtype = 'F'
aggregated_resources.setdefault((name, uid, comptype, test_organizer,), []).append((
float,
tupleFromDateTime(parseSQLTimestampToPyCalendar(start)),
tupleFromDateTime(parseSQLTimestampToPyCalendar(end)),
fbtype,
))
if caching:
yield FBCacheEntry.makeCacheEntry(calresource, self.attendee_uid, cache_timerange, aggregated_resources)
except IndexedSearchException:
raise InternalDataStoreError("Invalid indexedSearch query")
else:
if self.accountingItems is not None:
self.accountingItems["fb-cached"] = self.accountingItems.get("fb-cached", 0) + 1
# Log extended item
if self.logItems is not None:
self.logItems["fb-cached"] = self.logItems.get("fb-cached", 0) + 1
# Determine appropriate timezone (UTC is the default)
tzinfo = tz.gettimezone() if tz is not None else Timezone.UTCTimezone
filter = None
returnValue((aggregated_resources, tzinfo, filter,))
def generateFreeBusyInfo(
calresource,
fbinfo,
timerange,
matchtotal,
excludeuid=None,
organizer=None,
organizerPrincipal=None,
same_calendar_user=False,
servertoserver=False,
event_details=None,
logItems=None,
):
"""
Run a free busy report on the specified calendar collection
accumulating the free busy info for later processing.
@param calresource: the L{Calendar} for a calendar collection.
@param fbinfo: the array of busy periods to update.
@param timerange: the L{TimeRange} for the query.
@param matchtotal: the running total for the number of matches.
@param excludeuid: a C{str} containing a UID value to exclude any
components with that UID from contributing to free-busy.
@param organizer: a C{str} containing the value of the ORGANIZER property
in the VFREEBUSY request. This is used in conjunction with the UID
value to process exclusions.
@param same_calendar_user: a C{bool} indicating whether the calendar user
requesting the free-busy information is the same as the calendar user
being targeted.
@param servertoserver: a C{bool} indicating whether we are doing a local or
remote lookup request.
@param event_details: a C{list} into which to store extended VEVENT details if not C{None}
@param logItems: a C{dict} to store logging info to
"""
# First check the privilege on this collection
# TODO: for server-to-server we bypass this right now as we have no way to authorize external users.
# TODO: actually we by pass altogether by assuming anyone can check anyone else's freebusy
# May need organizer principal
organizer_record = calresource.directoryService().recordWithCalendarUserAddress(organizer) if organizer else None
organizer_uid = organizer_record.uid if organizer_record else ""
# Free busy is per-user
attendee_uid = calresource.viewerHome().uid()
attendee_record = calresource.directoryService().recordWithUID(attendee_uid)
# Get the timezone property from the collection.
tz = calresource.getTimezone()
# Look for possible extended free busy information
rich_options = {
"organizer": False,
"delegate": False,
"resource": False,
}
do_event_details = False
if event_details is not None and organizer_record is not None and attendee_record is not None:
# Get the principal of the authorized user which may be different from the organizer if a delegate of
# the organizer is making the request
authz_uid = organizer_uid
authz_record = organizer_record
if hasattr(calresource._txn, "_authz_uid") and calresource._txn._authz_uid != organizer_uid:
authz_uid = calresource._txn._authz_uid
authz_record = calresource.directoryService().recordWithUID(authz_uid)
# Check if attendee is also the organizer or the delegate doing the request
if attendee_uid in (organizer_uid, authz_uid):
do_event_details = True
rich_options["organizer"] = True
# Check if authorized user is a delegate of attendee
proxy = (yield authz_record.isProxyFor(attendee_record))
if config.Scheduling.Options.DelegeteRichFreeBusy and proxy:
do_event_details = True
rich_options["delegate"] = True
# Check if attendee is room or resource
if config.Scheduling.Options.RoomResourceRichFreeBusy and attendee_record.getCUType() in ("RESOURCE", "ROOM",):
do_event_details = True
rich_options["resource"] = True
# Try cache
resources = (yield FBCacheEntry.getCacheEntry(calresource, attendee_uid, timerange)) if config.EnableFreeBusyCache else None
if resources is None:
caching = False
if config.EnableFreeBusyCache:
# Log extended item
if logItems is not None:
logItems["fb-uncached"] = logItems.get("fb-uncached", 0) + 1
# We want to cache a large range of time based on the current date
cache_start = normalizeToUTC(PyCalendarDateTime.getToday() + PyCalendarDuration(days=0 - config.FreeBusyCacheDaysBack))
cache_end = normalizeToUTC(PyCalendarDateTime.getToday() + PyCalendarDuration(days=config.FreeBusyCacheDaysForward))
# If the requested time range would fit in our allowed cache range, trigger the cache creation
if compareDateTime(timerange.start, cache_start) >= 0 and compareDateTime(timerange.end, cache_end) <= 0:
cache_timerange = TimeRange(start=cache_start.getText(), end=cache_end.getText())
caching = True
#
# What we do is a fake calendar-query for VEVENT/VFREEBUSYs in the specified time-range.
# We then take those results and merge them into one VFREEBUSY component
# with appropriate FREEBUSY properties, and return that single item as iCal data.
#
# Create fake filter element to match time-range
filter = caldavxml.Filter(
caldavxml.ComponentFilter(
caldavxml.ComponentFilter(
cache_timerange if caching else timerange,
name=("VEVENT", "VFREEBUSY", "VAVAILABILITY"),
),
name="VCALENDAR",
)
)
filter = calendarqueryfilter.Filter(filter)
tzinfo = filter.settimezone(tz)
try:
resources = yield calresource._index.indexedSearch(filter, useruid=attendee_uid, fbtype=True)
if caching:
yield FBCacheEntry.makeCacheEntry(calresource, attendee_uid, cache_timerange, resources)
except IndexedSearchException:
resources = yield calresource._index.bruteForceSearch()
else:
# Log extended item
if logItems is not None:
logItems["fb-cached"] = logItems.get("fb-cached", 0) + 1
# Determine appropriate timezone (UTC is the default)
tzinfo = tz.gettimezone() if tz is not None else PyCalendarTimezone(utc=True)
# We care about separate instances for VEVENTs only
aggregated_resources = {}
for name, uid, type, test_organizer, float, start, end, fbtype, transp in resources:
if transp == 'T' and fbtype != '?':
fbtype = 'F'
aggregated_resources.setdefault((name, uid, type, test_organizer,), []).append((float, start, end, fbtype,))
for key in aggregated_resources.iterkeys():
name, uid, type, test_organizer = key
# Short-cut - if an fbtype exists we can use that
if type == "VEVENT" and aggregated_resources[key][0][3] != '?':
matchedResource = False
# Look at each instance
for float, start, end, fbtype in aggregated_resources[key]:
# Ignore free time or unknown
if fbtype in ('F', '?'):
continue
# Ignore ones of this UID
if excludeuid:
# See if we have a UID match
if (excludeuid == uid):
test_record = calresource.directoryService().recordWithCalendarUserAddress(test_organizer) if test_organizer else None
test_uid = test_record.uid if test_record else ""
# Check that ORGANIZER's match (security requirement)
if (organizer is None) or (organizer_uid == test_uid):
continue
# Check for no ORGANIZER and check by same calendar user
elif (test_uid == "") and same_calendar_user:
continue
# Apply a timezone to any floating times
fbstart = parseSQLTimestampToPyCalendar(start)
if float == 'Y':
fbstart.setTimezone(tzinfo)
else:
fbstart.setTimezone(PyCalendarTimezone(utc=True))
fbend = parseSQLTimestampToPyCalendar(end)
if float == 'Y':
fbend.setTimezone(tzinfo)
else:
fbend.setTimezone(PyCalendarTimezone(utc=True))
# Clip instance to time range
clipped = clipPeriod(PyCalendarPeriod(fbstart, duration=fbend - fbstart), PyCalendarPeriod(timerange.start, timerange.end))
# Double check for overlap
if clipped:
matchedResource = True
fbinfo[fbtype_index_mapper.get(fbtype, 0)].append(clipped)
if matchedResource:
# Check size of results is within limit
matchtotal += 1
if matchtotal > config.MaxQueryWithDataResults:
raise QueryMaxResources(config.MaxQueryWithDataResults, matchtotal)
# Add extended details
if do_event_details:
child = (yield calresource.calendarObjectWithName(name))
# Only add fully public events
if not child.accessMode or child.accessMode == Component.ACCESS_PUBLIC:
calendar = (yield child.componentForUser())
_addEventDetails(calendar, event_details, rich_options, timerange, tzinfo)
else:
child = (yield calresource.calendarObjectWithName(name))
calendar = (yield child.componentForUser())
# The calendar may come back as None if the resource is being changed, or was deleted
# between our initial index query and getting here. For now we will ignore this error, but in
# the longer term we need to implement some form of locking, perhaps.
if calendar is None:
log.error("Calendar %s is missing from calendar collection %r" % (name, calresource))
continue
# Ignore ones of this UID
if excludeuid:
# See if we have a UID match
if (excludeuid == uid):
test_organizer = calendar.getOrganizer()
test_record = calresource.principalForCalendarUserAddress(test_organizer) if test_organizer else None
test_uid = test_record.principalUID() if test_record else ""
# Check that ORGANIZER's match (security requirement)
if (organizer is None) or (organizer_uid == test_uid):
continue
# Check for no ORGANIZER and check by same calendar user
elif (test_organizer is None) and same_calendar_user:
continue
if filter.match(calendar, None):
# Check size of results is within limit
matchtotal += 1
if matchtotal > config.MaxQueryWithDataResults:
raise QueryMaxResources(config.MaxQueryWithDataResults, matchtotal)
if calendar.mainType() == "VEVENT":
processEventFreeBusy(calendar, fbinfo, timerange, tzinfo)
elif calendar.mainType() == "VFREEBUSY":
processFreeBusyFreeBusy(calendar, fbinfo, timerange)
elif calendar.mainType() == "VAVAILABILITY":
processAvailabilityFreeBusy(calendar, fbinfo, timerange)
else:
assert "Free-busy query returned unwanted component: %s in %r", (name, calresource,)
# Add extended details
if calendar.mainType() == "VEVENT" and do_event_details:
child = (yield calresource.calendarObjectWithName(name))
# Only add fully public events
if not child.accessMode or child.accessMode == Component.ACCESS_PUBLIC:
calendar = (yield child.componentForUser())
_addEventDetails(calendar, event_details, rich_options, timerange, tzinfo)
returnValue(matchtotal)
def _internalGenerateFreeBusyInfo(
calresource,
fbinfo,
timerange,
matchtotal,
excludeuid=None,
organizer=None,
organizerPrincipal=None,
same_calendar_user=False,
servertoserver=False,
event_details=None,
logItems=None,
accountingItems=None,
):
"""
Run a free busy report on the specified calendar collection
accumulating the free busy info for later processing.
@param calresource: the L{Calendar} for a calendar collection.
@param fbinfo: the array of busy periods to update.
@param timerange: the L{TimeRange} for the query.
@param matchtotal: the running total for the number of matches.
@param excludeuid: a C{str} containing a UID value to exclude any
components with that UID from contributing to free-busy.
@param organizer: a C{str} containing the value of the ORGANIZER property
in the VFREEBUSY request. This is used in conjunction with the UID
value to process exclusions.
@param same_calendar_user: a C{bool} indicating whether the calendar user
requesting the free-busy information is the same as the calendar user
being targeted.
@param servertoserver: a C{bool} indicating whether we are doing a local or
remote lookup request.
@param event_details: a C{list} into which to store extended VEVENT details if not C{None}
@param logItems: a C{dict} to store logging info to
@param accountingItems: a C{dict} to store accounting info to
"""
# First check the privilege on this collection
# TODO: for server-to-server we bypass this right now as we have no way to authorize external users.
# TODO: actually we by pass altogether by assuming anyone can check anyone else's freebusy
# May need organizer principal
organizer_record = (yield calresource.directoryService(
).recordWithCalendarUserAddress(organizer)) if organizer else None
organizer_uid = organizer_record.uid if organizer_record else ""
# Free busy is per-user
attendee_uid = calresource.viewerHome().uid()
attendee_record = yield calresource.directoryService().recordWithUID(
attendee_uid.decode("utf-8"))
# Get the timezone property from the collection.
tz = calresource.getTimezone()
# Look for possible extended free busy information
rich_options = {
"organizer": False,
"delegate": False,
"resource": False,
}
do_event_details = False
if event_details is not None and organizer_record is not None and attendee_record is not None:
# Get the principal of the authorized user which may be different from the organizer if a delegate of
# the organizer is making the request
authz_uid = organizer_uid
authz_record = organizer_record
if calresource._txn._authz_uid is not None and calresource._txn._authz_uid != organizer_uid:
authz_uid = calresource._txn._authz_uid
authz_record = yield calresource.directoryService().recordWithUID(
authz_uid.decode("utf-8"))
# Check if attendee is also the organizer or the delegate doing the request
if attendee_uid in (organizer_uid, authz_uid):
do_event_details = True
rich_options["organizer"] = True
# Check if authorized user is a delegate of attendee
proxy = (yield authz_record.isProxyFor(attendee_record))
if config.Scheduling.Options.DelegeteRichFreeBusy and proxy:
do_event_details = True
rich_options["delegate"] = True
# Check if attendee is room or resource
if config.Scheduling.Options.RoomResourceRichFreeBusy and attendee_record.getCUType(
) in (
"RESOURCE",
"ROOM",
):
do_event_details = True
rich_options["resource"] = True
# Try cache
resources = (yield FBCacheEntry.getCacheEntry(
calresource, attendee_uid,
timerange)) if config.EnableFreeBusyCache else None
if resources is None:
if accountingItems is not None:
accountingItems["fb-uncached"] = accountingItems.get(
"fb-uncached", 0) + 1
caching = False
if config.EnableFreeBusyCache:
# Log extended item
if logItems is not None:
logItems["fb-uncached"] = logItems.get("fb-uncached", 0) + 1
# We want to cache a large range of time based on the current date
cache_start = normalizeToUTC(DateTime.getToday() + Duration(
days=0 - config.FreeBusyCacheDaysBack))
cache_end = normalizeToUTC(DateTime.getToday() + Duration(
days=config.FreeBusyCacheDaysForward))
# If the requested time range would fit in our allowed cache range, trigger the cache creation
if compareDateTime(timerange.start,
cache_start) >= 0 and compareDateTime(
timerange.end, cache_end) <= 0:
cache_timerange = TimeRange(start=cache_start.getText(),
end=cache_end.getText())
caching = True
#
# What we do is a fake calendar-query for VEVENT/VFREEBUSYs in the specified time-range.
# We then take those results and merge them into one VFREEBUSY component
# with appropriate FREEBUSY properties, and return that single item as iCal data.
#
# Create fake filter element to match time-range
filter = caldavxml.Filter(
caldavxml.ComponentFilter(
caldavxml.ComponentFilter(
cache_timerange if caching else timerange,
name=("VEVENT", "VFREEBUSY", "VAVAILABILITY"),
),
name="VCALENDAR",
))
filter = Filter(filter)
tzinfo = filter.settimezone(tz)
if accountingItems is not None:
tr = cache_timerange if caching else timerange
accountingItems["fb-query-timerange"] = (
str(tr.start),
str(tr.end),
)
try:
resources = yield calresource.search(filter,
useruid=attendee_uid,
fbtype=True)
if caching:
yield FBCacheEntry.makeCacheEntry(calresource, attendee_uid,
cache_timerange, resources)
except IndexedSearchException:
raise InternalDataStoreError("Invalid indexedSearch query")
else:
if accountingItems is not None:
accountingItems["fb-cached"] = accountingItems.get("fb-cached",
0) + 1
# Log extended item
if logItems is not None:
logItems["fb-cached"] = logItems.get("fb-cached", 0) + 1
# Determine appropriate timezone (UTC is the default)
tzinfo = tz.gettimezone() if tz is not None else Timezone(utc=True)
# We care about separate instances for VEVENTs only
aggregated_resources = {}
for name, uid, type, test_organizer, float, start, end, fbtype, transp in resources:
if transp == 'T' and fbtype != '?':
fbtype = 'F'
aggregated_resources.setdefault((
name,
uid,
type,
test_organizer,
), []).append((
float,
start,
end,
fbtype,
))
if accountingItems is not None:
accountingItems["fb-resources"] = {}
for k, v in aggregated_resources.items():
name, uid, type, test_organizer = k
accountingItems["fb-resources"][uid] = []
for float, start, end, fbtype in v:
fbstart = parseSQLTimestampToPyCalendar(start)
if float == 'Y':
fbstart.setTimezone(tzinfo)
else:
fbstart.setTimezone(Timezone(utc=True))
fbend = parseSQLTimestampToPyCalendar(end)
if float == 'Y':
fbend.setTimezone(tzinfo)
else:
fbend.setTimezone(Timezone(utc=True))
accountingItems["fb-resources"][uid].append((
float,
str(fbstart),
str(fbend),
fbtype,
))
# Cache directory record lookup outside this loop as it is expensive and will likely
# always end up being called with the same organizer address.
recordUIDCache = {}
for key in aggregated_resources.iterkeys():
name, uid, type, test_organizer = key
# Short-cut - if an fbtype exists we can use that
if type == "VEVENT" and aggregated_resources[key][0][3] != '?':
matchedResource = False
# Look at each instance
for float, start, end, fbtype in aggregated_resources[key]:
# Ignore free time or unknown
if fbtype in ('F', '?'):
continue
# Ignore ones of this UID
if excludeuid:
# See if we have a UID match
if (excludeuid == uid):
if test_organizer:
test_uid = recordUIDCache.get(test_organizer)
if test_uid is None:
test_record = (yield
calresource.directoryService(
).recordWithCalendarUserAddress(
test_organizer))
test_uid = test_record.uid if test_record else ""
recordUIDCache[test_organizer] = test_uid
else:
test_uid = ""
# Check that ORGANIZER's match (security requirement)
if (organizer is None) or (organizer_uid == test_uid):
continue
# Check for no ORGANIZER and check by same calendar user
elif (test_uid == "") and same_calendar_user:
continue
# Apply a timezone to any floating times
fbstart = parseSQLTimestampToPyCalendar(start)
if float == 'Y':
fbstart.setTimezone(tzinfo)
else:
fbstart.setTimezone(Timezone(utc=True))
fbend = parseSQLTimestampToPyCalendar(end)
if float == 'Y':
fbend.setTimezone(tzinfo)
else:
fbend.setTimezone(Timezone(utc=True))
# Clip instance to time range
clipped = clipPeriod(Period(fbstart, duration=fbend - fbstart),
Period(timerange.start, timerange.end))
# Double check for overlap
if clipped:
matchedResource = True
fbinfo[fbtype_index_mapper.get(fbtype, 0)].append(clipped)
if matchedResource:
# Check size of results is within limit
matchtotal += 1
if matchtotal > config.MaxQueryWithDataResults:
raise QueryMaxResources(config.MaxQueryWithDataResults,
matchtotal)
# Add extended details
if do_event_details:
child = (yield calresource.calendarObjectWithName(name))
# Only add fully public events
if not child.accessMode or child.accessMode == Component.ACCESS_PUBLIC:
calendar = (yield child.componentForUser())
_addEventDetails(calendar, event_details, rich_options,
timerange, tzinfo)
else:
child = (yield calresource.calendarObjectWithName(name))
calendar = (yield child.componentForUser())
# The calendar may come back as None if the resource is being changed, or was deleted
# between our initial index query and getting here. For now we will ignore this error, but in
# the longer term we need to implement some form of locking, perhaps.
if calendar is None:
log.error(
"Calendar %s is missing from calendar collection %r" %
(name, calresource))
continue
# Ignore ones of this UID
if excludeuid:
# See if we have a UID match
if (excludeuid == uid):
test_organizer = calendar.getOrganizer()
if test_organizer:
test_uid = recordUIDCache.get(test_organizer)
if test_uid is None:
test_record = (yield calresource.directoryService(
).recordWithCalendarUserAddress(test_organizer))
test_uid = test_record.uid if test_record else ""
recordUIDCache[test_organizer] = test_uid
else:
test_uid = ""
# Check that ORGANIZER's match (security requirement)
if (organizer is None) or (organizer_uid == test_uid):
continue
# Check for no ORGANIZER and check by same calendar user
elif (test_organizer is None) and same_calendar_user:
continue
if accountingItems is not None:
accountingItems.setdefault("fb-filter-match", []).append(uid)
if filter.match(calendar, None):
if accountingItems is not None:
accountingItems.setdefault("fb-filter-matched",
[]).append(uid)
# Check size of results is within limit
matchtotal += 1
if matchtotal > config.MaxQueryWithDataResults:
raise QueryMaxResources(config.MaxQueryWithDataResults,
matchtotal)
if calendar.mainType() == "VEVENT":
processEventFreeBusy(calendar, fbinfo, timerange, tzinfo)
elif calendar.mainType() == "VFREEBUSY":
processFreeBusyFreeBusy(calendar, fbinfo, timerange)
elif calendar.mainType() == "VAVAILABILITY":
processAvailabilityFreeBusy(calendar, fbinfo, timerange)
else:
assert "Free-busy query returned unwanted component: %s in %r", (
name,
calresource,
)
# Add extended details
if calendar.mainType() == "VEVENT" and do_event_details:
child = (yield calresource.calendarObjectWithName(name))
# Only add fully public events
if not child.accessMode or child.accessMode == Component.ACCESS_PUBLIC:
calendar = (yield child.componentForUser())
_addEventDetails(calendar, event_details, rich_options,
timerange, tzinfo)
returnValue(matchtotal)
def generateFreeBusyInfo(
request,
calresource,
fbinfo,
timerange,
matchtotal,
excludeuid=None,
organizer=None,
organizerPrincipal=None,
same_calendar_user=False,
servertoserver=False,
event_details=None,
):
"""
Run a free busy report on the specified calendar collection
accumulating the free busy info for later processing.
@param request: the L{IRequest} for the current request.
@param calresource: the L{CalDAVResource} for a calendar collection.
@param fbinfo: the array of busy periods to update.
@param timerange: the L{TimeRange} for the query.
@param matchtotal: the running total for the number of matches.
@param excludeuid: a C{str} containing a UID value to exclude any
components with that UID from contributing to free-busy.
@param organizer: a C{str} containing the value of the ORGANIZER property
in the VFREEBUSY request. This is used in conjunction with the UID
value to process exclusions.
@param same_calendar_user: a C{bool} indicating whether the calendar user
requesting the free-busy information is the same as the calendar user
being targeted.
@param servertoserver: a C{bool} indicating whether we are doing a local or
remote lookup request.
@param event_details: a C{list} into which to store extended VEVENT details if not C{None}
"""
# First check the privilege on this collection
# TODO: for server-to-server we bypass this right now as we have no way to authorize external users.
if not servertoserver:
try:
yield calresource.checkPrivileges(request,
(caldavxml.ReadFreeBusy(), ),
principal=organizerPrincipal)
except AccessDeniedError:
returnValue(matchtotal)
# May need organizer principal
organizer_principal = (yield calresource.principalForCalendarUserAddress(
organizer)) if organizer else None
organizer_uid = organizer_principal.principalUID(
) if organizer_principal else ""
# Free busy is per-user
userPrincipal = (yield calresource.resourceOwnerPrincipal(request))
if userPrincipal:
useruid = userPrincipal.principalUID()
else:
useruid = ""
# Get the timezone property from the collection.
has_prop = (yield calresource.hasProperty(CalendarTimeZone(), request))
if has_prop:
tz = (yield calresource.readProperty(CalendarTimeZone(), request))
else:
tz = None
# Look for possible extended free busy information
rich_options = {
"organizer": False,
"delegate": False,
"resource": False,
}
do_event_details = False
if event_details is not None and organizer_principal is not None and userPrincipal is not None:
# Check if organizer is attendee
if organizer_principal == userPrincipal:
do_event_details = True
rich_options["organizer"] = True
# Check if organizer is a delegate of attendee
proxy = (yield organizer_principal.isProxyFor(userPrincipal))
if config.Scheduling.Options.DelegeteRichFreeBusy and proxy:
do_event_details = True
rich_options["delegate"] = True
# Check if attendee is room or resource
if config.Scheduling.Options.RoomResourceRichFreeBusy and userPrincipal.getCUType(
) in (
"RESOURCE",
"ROOM",
):
do_event_details = True
rich_options["resource"] = True
# Try cache
resources = (yield FBCacheEntry.getCacheEntry(
calresource, useruid,
timerange)) if config.EnableFreeBusyCache else None
if resources is None:
caching = False
if config.EnableFreeBusyCache:
# Log extended item
if not hasattr(request, "extendedLogItems"):
request.extendedLogItems = {}
request.extendedLogItems[
"fb-uncached"] = request.extendedLogItems.get(
"fb-uncached", 0) + 1
# We want to cache a large range of time based on the current date
cache_start = normalizeToUTC(DateTime.getToday() + Duration(
days=0 - config.FreeBusyCacheDaysBack))
cache_end = normalizeToUTC(DateTime.getToday() + Duration(
days=config.FreeBusyCacheDaysForward))
# If the requested timerange would fit in our allowed cache range, trigger the cache creation
if compareDateTime(timerange.start,
cache_start) >= 0 and compareDateTime(
timerange.end, cache_end) <= 0:
cache_timerange = TimeRange(start=cache_start.getText(),
end=cache_end.getText())
caching = True
#
# What we do is a fake calendar-query for VEVENT/VFREEBUSYs in the specified time-range.
# We then take those results and merge them into one VFREEBUSY component
# with appropriate FREEBUSY properties, and return that single item as iCal data.
#
# Create fake filter element to match time-range
filter = caldavxml.Filter(
caldavxml.ComponentFilter(
caldavxml.ComponentFilter(
cache_timerange if caching else timerange,
name=("VEVENT", "VFREEBUSY", "VAVAILABILITY"),
),
name="VCALENDAR",
))
filter = Filter(filter)
tzinfo = filter.settimezone(tz)
try:
resources = yield calresource.search(filter,
useruid=useruid,
fbtype=True)
if caching:
yield FBCacheEntry.makeCacheEntry(calresource, useruid,
cache_timerange, resources)
except IndexedSearchException:
raise HTTPError(
StatusResponse(responsecode.INTERNAL_SERVER_ERROR,
"Failed freebusy query"))
else:
# Log extended item
if not hasattr(request, "extendedLogItems"):
request.extendedLogItems = {}
request.extendedLogItems["fb-cached"] = request.extendedLogItems.get(
"fb-cached", 0) + 1
# Determine appropriate timezone (UTC is the default)
tzinfo = tz.gettimezone() if tz is not None else Timezone(utc=True)
# We care about separate instances for VEVENTs only
aggregated_resources = {}
for name, uid, type, test_organizer, float, start, end, fbtype, transp in resources:
if transp == 'T' and fbtype != '?':
fbtype = 'F'
aggregated_resources.setdefault((
name,
uid,
type,
test_organizer,
), []).append((
float,
start,
end,
fbtype,
))
for key in aggregated_resources.iterkeys():
name, uid, type, test_organizer = key
# Short-cut - if an fbtype exists we can use that
if type == "VEVENT" and aggregated_resources[key][0][3] != '?':
matchedResource = False
# Look at each instance
for float, start, end, fbtype in aggregated_resources[key]:
# Ignore free time or unknown
if fbtype in ('F', '?'):
continue
# Ignore ones of this UID
if excludeuid:
# See if we have a UID match
if (excludeuid == uid):
test_principal = (
yield calresource.principalForCalendarUserAddress(
test_organizer)) if test_organizer else None
test_uid = test_principal.principalUID(
) if test_principal else ""
# Check that ORGANIZER's match (security requirement)
if (organizer is None) or (organizer_uid == test_uid):
continue
# Check for no ORGANIZER and check by same calendar user
elif (test_uid == "") and same_calendar_user:
continue
# Apply a timezone to any floating times
fbstart = parseSQLTimestampToPyCalendar(start)
if float == 'Y':
fbstart.setTimezone(tzinfo)
else:
fbstart.setTimezone(Timezone(utc=True))
fbend = parseSQLTimestampToPyCalendar(end)
if float == 'Y':
fbend.setTimezone(tzinfo)
else:
fbend.setTimezone(Timezone(utc=True))
# Clip instance to time range
clipped = clipPeriod(Period(fbstart, duration=fbend - fbstart),
Period(timerange.start, timerange.end))
# Double check for overlap
if clipped:
matchedResource = True
fbinfo[fbtype_index_mapper.get(fbtype, 0)].append(clipped)
if matchedResource:
# Check size of results is within limit
matchtotal += 1
if matchtotal > max_number_of_matches:
raise NumberOfMatchesWithinLimits(max_number_of_matches)
# Add extended details
if do_event_details:
child = (yield
request.locateChildResource(calresource, name))
calendar = (yield child.iCalendarForUser(request))
_addEventDetails(calendar, event_details, rich_options,
timerange, tzinfo)
else:
child = (yield request.locateChildResource(calresource, name))
calendar = (yield child.iCalendarForUser(request))
# The calendar may come back as None if the resource is being changed, or was deleted
# between our initial index query and getting here. For now we will ignore this error, but in
# the longer term we need to implement some form of locking, perhaps.
if calendar is None:
log.error(
"Calendar %s is missing from calendar collection %r" %
(name, calresource))
continue
# Ignore ones of this UID
if excludeuid:
# See if we have a UID match
if (excludeuid == uid):
test_organizer = calendar.getOrganizer()
test_principal = (
yield calresource.principalForCalendarUserAddress(
test_organizer)) if test_organizer else None
test_uid = test_principal.principalUID(
) if test_principal else ""
# Check that ORGANIZER's match (security requirement)
if (organizer is None) or (organizer_uid == test_uid):
continue
# Check for no ORGANIZER and check by same calendar user
elif (test_organizer is None) and same_calendar_user:
continue
if filter.match(calendar, None):
# Check size of results is within limit
matchtotal += 1
if matchtotal > max_number_of_matches:
raise NumberOfMatchesWithinLimits(max_number_of_matches)
if calendar.mainType() == "VEVENT":
processEventFreeBusy(calendar, fbinfo, timerange, tzinfo)
elif calendar.mainType() == "VFREEBUSY":
processFreeBusyFreeBusy(calendar, fbinfo, timerange)
elif calendar.mainType() == "VAVAILABILITY":
processAvailabilityFreeBusy(calendar, fbinfo, timerange)
else:
assert "Free-busy query returned unwanted component: %s in %r", (
name,
calresource,
)
# Add extended details
if calendar.mainType() == "VEVENT" and do_event_details:
child = (yield
request.locateChildResource(calresource, name))
calendar = (yield child.iCalendarForUser(request))
_addEventDetails(calendar, event_details, rich_options,
timerange, tzinfo)
returnValue(matchtotal)
def _matchCalendarResources(self, calresource):
# Get the timezone property from the collection.
tz = calresource.getTimezone()
# Try cache
aggregated_resources = (yield FBCacheEntry.getCacheEntry(calresource, self.attendee_uid, self.timerange)) if config.EnableFreeBusyCache else None
if aggregated_resources is None:
if self.accountingItems is not None:
self.accountingItems["fb-uncached"] = self.accountingItems.get("fb-uncached", 0) + 1
caching = False
if config.EnableFreeBusyCache:
# Log extended item
if self.logItems is not None:
self.logItems["fb-uncached"] = self.logItems.get("fb-uncached", 0) + 1
# We want to cache a large range of time based on the current date
cache_start = normalizeToUTC(DateTime.getToday() + Duration(days=0 - config.FreeBusyCacheDaysBack))
cache_end = normalizeToUTC(DateTime.getToday() + Duration(days=config.FreeBusyCacheDaysForward))
# If the requested time range would fit in our allowed cache range, trigger the cache creation
if compareDateTime(self.timerange.getStart(), cache_start) >= 0 and compareDateTime(self.timerange.getEnd(), cache_end) <= 0:
cache_timerange = Period(cache_start, cache_end)
caching = True
#
# What we do is a fake calendar-query for VEVENT/VFREEBUSYs in the specified time-range.
# We then take those results and merge them into one VFREEBUSY component
# with appropriate FREEBUSY properties, and return that single item as iCal data.
#
# Create fake filter element to match time-range
tr = TimeRange(
start=(cache_timerange if caching else self.timerange).getStart().getText(),
end=(cache_timerange if caching else self.timerange).getEnd().getText(),
)
filter = caldavxml.Filter(
caldavxml.ComponentFilter(
caldavxml.ComponentFilter(
tr,
name=("VEVENT", "VFREEBUSY", "VAVAILABILITY"),
),
name="VCALENDAR",
)
)
filter = Filter(filter)
tzinfo = filter.settimezone(tz)
if self.accountingItems is not None:
self.accountingItems["fb-query-timerange"] = (str(tr.start), str(tr.end),)
try:
resources = yield calresource.search(filter, useruid=self.attendee_uid, fbtype=True)
aggregated_resources = {}
for name, uid, comptype, test_organizer, float, start, end, fbtype, transp in resources:
if transp == 'T' and fbtype != '?':
fbtype = 'F'
aggregated_resources.setdefault((name, uid, comptype, test_organizer,), []).append((
float,
tupleFromDateTime(parseSQLTimestampToPyCalendar(start)),
tupleFromDateTime(parseSQLTimestampToPyCalendar(end)),
fbtype,
))
if caching:
yield FBCacheEntry.makeCacheEntry(calresource, self.attendee_uid, cache_timerange, aggregated_resources)
except IndexedSearchException:
raise InternalDataStoreError("Invalid indexedSearch query")
else:
if self.accountingItems is not None:
self.accountingItems["fb-cached"] = self.accountingItems.get("fb-cached", 0) + 1
# Log extended item
if self.logItems is not None:
self.logItems["fb-cached"] = self.logItems.get("fb-cached", 0) + 1
# Determine appropriate timezone (UTC is the default)
tzinfo = tz.gettimezone() if tz is not None else Timezone.UTCTimezone
filter = None
returnValue((aggregated_resources, tzinfo, filter,))
