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Remove the ability to fetch old messages via get_updates 

Clients should use get_old_messages, instead.

(imported from commit 67847ef67d8ad4bf4af3f6082f85f0c76a41944c)
This commit is contained in:
Zev Benjamin 2012-10-25 15:30:42 -04:00
parent a130dfb1fb
commit 451a041919
2 changed files with 21 additions and 63 deletions
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2
zephyr/static/js/zephyr.js
View File

@ -675,7 +675,7 @@ function get_updates() {
max_messages_for_backfill = 0;
}
} else {
add_messages(data.messages);
add_messages(data.messages, "bottom");
}
if (data.new_pointer !== undefined

82
zephyr/views.py
View File

@ -279,8 +279,6 @@ def get_old_messages_backend(start, which, number, user_profile,
@asynchronous
@login_required_json_view
def json_get_updates(request, handler):
if not ('last' in request.POST and 'first' in request.POST):
return json_error("Missing message range")
user_profile = UserProfile.objects.get(user=request.user)
return get_updates_backend(request, user_profile, handler, apply_markdown=True)
@ -292,8 +290,8 @@ def api_get_messages(request, user_profile, handler):
apply_markdown=(request.POST.get("apply_markdown") is not None),
mirror=request.POST.get("mirror"))
def format_updates_response(messages=[], apply_markdown=True, reason_empty=None,
user_profile=None, new_pointer=None, where='bottom',
def format_updates_response(messages=[], apply_markdown=True,
user_profile=None, new_pointer=None,
mirror=None):
max_message_id = None
if user_profile is not None:
@ -306,10 +304,7 @@ def format_updates_response(messages=[], apply_markdown=True, reason_empty=None,
ret = {'messages': [message.to_dict(apply_markdown) for message in messages],
"result": "success",
"msg": "",
'where': where,
'server_generation': SERVER_GENERATION}
if reason_empty is not None:
ret['reason_empty'] = reason_empty
if max_message_id is not None:
# TODO: Figure out how to accurately return this always
ret["max_message_id"] = max_message_id
@ -326,34 +321,21 @@ def format_delayed_updates_response(request=None, user_profile=None,
client_pointer = int(client_pointer)
client_wants_ptr_updates = True
reason_empty = None
pointer = None
if (client_wants_ptr_updates
and str(user_profile.last_pointer_updater) != str(request.session.session_key)
and (str(user_profile.last_pointer_updater)
!= str(request.session.session_key))
and client_pointer != new_pointer):
if not kwargs.get('messages', False):
reason_empty = 'pointer_update'
else:
new_pointer = None
pointer = new_pointer
return format_updates_response(reason_empty=reason_empty,
new_pointer=new_pointer,
**kwargs)
return format_updates_response(new_pointer=pointer, **kwargs)
def return_messages_immediately(request, user_profile, **kwargs):
first = request.POST.get("first")
last = request.POST.get("last")
client_pointer = request.POST.get("pointer")
failures = request.POST.get("failures")
want_old_messages = (request.POST.get("want_old_messages") == "true")
client_server_generation = request.POST.get("server_generation")
client_reload_pending = request.POST.get("reload_pending")
if first is None or last is None:
# When an API user is first querying the server to subscribe,
# there's no reason to reply immediately.
# TODO: Make this work with server_generation/failures
return None
first = int(first)
last = int(last)
client_wants_ptr_updates = False
if client_pointer is not None:
client_pointer = int(client_pointer)
@ -364,23 +346,10 @@ def return_messages_immediately(request, user_profile, **kwargs):
client_reload_pending = int(client_reload_pending)
messages = []
where = 'bottom'
new_pointer = None
query = Message.objects.select_related().filter(usermessage__user_profile = user_profile).order_by('id')
ptr = user_profile.pointer
if last == -1:
# User has no messages yet
# Get a range around the pointer
messages = (last_n(200, query.filter(id__lt=ptr))
+ list(query.filter(id__gte=ptr)[:200]))
else:
messages = query.filter(id__gt=last)[:400]
if want_old_messages and not messages:
# No more messages in the future; try filling in from the past.
messages = last_n(400, query.filter(id__lt=first))
where = 'top'
# Filter for mirroring before checking whether there are any
# messages to pass on. If we don't do this, when the only message
# to forward is one that was sent via the mirroring, the API
@ -391,36 +360,25 @@ def return_messages_immediately(request, user_profile, **kwargs):
m.sending_client.name != kwargs["mirror"]]
if messages:
return format_updates_response(messages=messages, where=where, **kwargs)
return format_updates_response(messages=messages, **kwargs)
# We might want to return an empty list to the client immediately.
# In that case, we tell the client why.
reason_empty = None
if want_old_messages:
# Tell the client to hide the "Load more messages" button.
reason_empty = 'no_old_messages'
elif failures >= 4:
# Tell the client to hide the connection failure message.
reason_empty = 'reset_failures'
elif (client_server_generation is not None
client_needs_reload = False
if (client_server_generation is not None
and int(client_server_generation) != SERVER_GENERATION
and not client_reload_pending):
# Inform the client that they should reload.
reason_empty = 'client_reload'
elif (client_wants_ptr_updates
client_needs_reload = True
if (client_wants_ptr_updates
and str(user_profile.last_pointer_updater) != str(request.session.session_key)
and ptr != client_pointer):
reason_empty = 'pointer_update'
new_pointer = ptr
if reason_empty is not None:
return format_updates_response(
where="bottom",
user_profile=user_profile,
reason_empty=reason_empty,
new_pointer=new_pointer,
**kwargs)
if (failures >= 4
or client_needs_reload
or new_pointer is not None):
return format_updates_response(user_profile=user_profile,
new_pointer=new_pointer,
**kwargs)
return None