def __init__(self, proto):
self.proto = proto
self.updater = None
self.entry_cb = CallbackList()
self.errbacks = CallbackList()
self.raw_errbacks = CallbackList()
self.continue_refreshing = False
self.next_refresh = None
self.loading = False
self._last_id = None
self._error_handler = ErrorThrottler(self.report_error)
def __init__(self, proto):
self.proto = proto
self.updater = None
self.entry_cb = CallbackList()
self.errbacks = CallbackList()
self.raw_errbacks = CallbackList()
self.continue_refreshing = False
self.next_refresh = None
self.loading = False
self._last_id = None
self._error_handler = ErrorThrottler(self.report_error)
class TwitterFeed:
def __init__(self, proto):
self.proto = proto
self.updater = None
self.entry_cb = CallbackList()
self.errbacks = CallbackList()
self.raw_errbacks = CallbackList()
self.continue_refreshing = False
self.next_refresh = None
self.loading = False
self._last_id = None
self._error_handler = ErrorThrottler(self.report_error)
def _last_id_var(self):
return self.LAST_ID_VAR
def update_last_id(self, last_id):
self._last_id = last_id
self.proto.set_user_var(self._last_id_var(), last_id)
@property
def last_id(self):
if self._last_id is None:
self._last_id = self.proto.user_var(self._last_id_var())
return self._last_id
def addEntryCallback(self, *args, **kwargs):
"""Add a callback for new entries"""
self.entry_cb.addCallback(*args, **kwargs)
def addErrback(self, *args, **kwargs):
"""Add a callbck for loading errors"""
self.errbacks.addCallback(*args, **kwargs)
def addRawErrback(self, *args, **kwargs):
"""Add a "raw" error callback, without error throttling"""
self.raw_errbacks.addCallback(*args, **kwargs)
@property
def api(self):
return self.proto.api
@property
def scheduler(self):
return self.proto.scheduler
def refresh_resched(self):
if self.updater is not None:
self.updater.resched()
def _refresh(self, last_id=None):
if last_id is None:
last_id = self.last_id
entries = []
d = defer.Deferred()
def doit():
args = {}
if last_id:
args['since_id'] = last_id
args['count'] = str(QUERY_COUNT)
return self._timeline(got_entry, args).addCallbacks(finished, error)
dbg("_refresh returning")
def error(e):
dbg("_refresh error %r", e)
return e
# store the entries and then show them in chronological order:
def got_entry(e):
dbg("got an entry")
entries.insert(0, e)
def finished(*args):
dbg("finished loading %r" % (args,))
# tell the error throttler that things are ok, now:
self._error_handler.ok()
for e in entries:
self.entry_cb.callback(e)
if self.last_id is None or int(e.id) > int(self.last_id):
self.update_last_id(e.id)
return len(entries)
return doit()
def report_error(self, e):
"""Send an error message back to interested parties"""
self.errbacks.callback(e)
def refresh(self):
def doit():
if self.loading:
dbg("Won't refresh now. Still loading...")
return
self.loading = True
self._refresh().addCallbacks(done, error).addBoth(resched)
def error(e):
dbg("ERROR while refreshing")
self.raw_errbacks.callback(e)
self._error_handler.error(e.value)
return e
def done(num_entries):
dbg("got %d entries." % (num_entries))
def resched(*args):
self.loading = False
dbg("rescheduling... [%r]", args)
self.refresh_resched()
return doit()
def stop_refreshing(self):
if self.updater is not None:
self.updater.destroy()
self.updater = None
def start_refreshing(self):
if self.updater is None:
self.updater = self.scheduler.new_updater(self.refresh)
# yes, this is cheating, but I don't want to make the user wait for
# too long
#FIXME: just add support for 'one-shot lower-latency' calls on
# the scheduler, instead of cheating
self.refresh()
class TwitterFeed:
def __init__(self, proto):
self.proto = proto
self.updater = None
self.entry_cb = CallbackList()
self.errbacks = CallbackList()
self.raw_errbacks = CallbackList()
self.continue_refreshing = False
self.next_refresh = None
self.loading = False
self._last_id = None
self._error_handler = ErrorThrottler(self.report_error)
def _last_id_var(self):
return self.LAST_ID_VAR
def update_last_id(self, last_id):
self._last_id = last_id
self.proto.set_user_var(self._last_id_var(), last_id)
@property
def last_id(self):
if self._last_id is None:
self._last_id = self.proto.user_var(self._last_id_var())
return self._last_id
def addEntryCallback(self, *args, **kwargs):
"""Add a callback for new entries"""
self.entry_cb.addCallback(*args, **kwargs)
def addErrback(self, *args, **kwargs):
"""Add a callbck for loading errors"""
self.errbacks.addCallback(*args, **kwargs)
def addRawErrback(self, *args, **kwargs):
"""Add a "raw" error callback, without error throttling"""
self.raw_errbacks.addCallback(*args, **kwargs)
@property
def api(self):
return self.proto.api
@property
def scheduler(self):
return self.proto.scheduler
def refresh_resched(self):
if self.updater is not None:
self.updater.resched()
def _refresh(self, last_id=None):
if last_id is None:
last_id = self.last_id
entries = []
d = defer.Deferred()
def doit():
args = {}
if last_id:
args['since_id'] = last_id
args['count'] = str(QUERY_COUNT)
return self._timeline(got_entry,
args).addCallbacks(finished, error)
dbg("_refresh returning")
def error(e):
dbg("_refresh error %r", e)
return e
# store the entries and then show them in chronological order:
def got_entry(e):
dbg("got an entry")
entries.insert(0, e)
def finished(*args):
dbg("finished loading %r" % (args, ))
# tell the error throttler that things are ok, now:
self._error_handler.ok()
for e in entries:
self.entry_cb.callback(e)
if self.last_id is None or int(e.id) > int(self.last_id):
self.update_last_id(e.id)
return len(entries)
return doit()
def report_error(self, e):
"""Send an error message back to interested parties"""
self.errbacks.callback(e)
def refresh(self):
def doit():
if self.loading:
dbg("Won't refresh now. Still loading...")
return
self.loading = True
self._refresh().addCallbacks(done, error).addBoth(resched)
def error(e):
dbg("ERROR while refreshing")
self.raw_errbacks.callback(e)
self._error_handler.error(e.value)
return e
def done(num_entries):
dbg("got %d entries." % (num_entries))
def resched(*args):
self.loading = False
dbg("rescheduling... [%r]", args)
self.refresh_resched()
return doit()
def stop_refreshing(self):
if self.updater is not None:
self.updater.destroy()
self.updater = None
def start_refreshing(self):
if self.updater is None:
self.updater = self.scheduler.new_updater(self.refresh)
# yes, this is cheating, but I don't want to make the user wait for
# too long
#FIXME: just add support for 'one-shot lower-latency' calls on
# the scheduler, instead of cheating
self.refresh()
