2019-11-02 00:06:25 +01:00
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const noop = function () {};
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2018-02-20 13:08:50 +01:00
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2018-03-31 02:38:10 +02:00
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set_global('$', global.make_zjquery());
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dependencies: Remove WebSockets system for sending messages.
Zulip has had a small use of WebSockets (specifically, for the code
path of sending messages, via the webapp only) since ~2013. We
originally added this use of WebSockets in the hope that the latency
benefits of doing so would allow us to avoid implementing a markdown
local echo; they were not. Further, HTTP/2 may have eliminated the
latency difference we hoped to exploit by using WebSockets in any
case.
While we’d originally imagined using WebSockets for other endpoints,
there was never a good justification for moving more components to the
WebSockets system.
This WebSockets code path had a lot of downsides/complexity,
including:
* The messy hack involving constructing an emulated request object to
hook into doing Django requests.
* The `message_senders` queue processor system, which increases RAM
needs and must be provisioned independently from the rest of the
server).
* A duplicate check_send_receive_time Nagios test specific to
WebSockets.
* The requirement for users to have their firewalls/NATs allow
WebSocket connections, and a setting to disable them for networks
where WebSockets don’t work.
* Dependencies on the SockJS family of libraries, which has at times
been poorly maintained, and periodically throws random JavaScript
exceptions in our production environments without a deep enough
traceback to effectively investigate.
* A total of about 1600 lines of our code related to the feature.
* Increased load on the Tornado system, especially around a Zulip
server restart, and especially for large installations like
zulipchat.com, resulting in extra delay before messages can be sent
again.
As detailed in
https://github.com/zulip/zulip/pull/12862#issuecomment-536152397, it
appears that removing WebSockets moderately increases the time it
takes for the `send_message` API query to return from the server, but
does not significantly change the time between when a message is sent
and when it is received by clients. We don’t understand the reason
for that change (suggesting the possibility of a measurement error),
and even if it is a real change, we consider that potential small
latency regression to be acceptable.
If we later want WebSockets, we’ll likely want to just use Django
Channels.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
2019-07-23 01:43:40 +02:00
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set_global('page_params', {});
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2018-02-20 13:08:50 +01:00
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set_global('channel', {});
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set_global('navigator', {});
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set_global('reload', {});
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2018-08-04 15:40:25 +02:00
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set_global('reload_state', {});
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2018-02-20 13:08:50 +01:00
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set_global('sent_messages', {
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start_tracking_message: noop,
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report_server_ack: noop,
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});
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2018-02-23 16:18:27 +01:00
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set_global('blueslip', global.make_zblueslip());
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2018-02-20 13:08:50 +01:00
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2018-02-23 16:18:27 +01:00
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zrequire('people');
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2018-12-22 18:44:54 +01:00
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zrequire('util');
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2018-02-20 13:08:50 +01:00
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zrequire('transmit');
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2018-05-15 12:40:07 +02:00
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run_test('transmit_message_ajax', () => {
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2018-02-20 13:08:50 +01:00
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2019-11-02 00:06:25 +01:00
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let success_func_called;
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const success = function () {
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2018-02-20 13:08:50 +01:00
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success_func_called = true;
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};
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2019-11-02 00:06:25 +01:00
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const request = {foo: 'bar'};
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2018-02-20 13:08:50 +01:00
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channel.post = function (opts) {
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assert.equal(opts.url, '/json/messages');
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assert.equal(opts.data.foo, 'bar');
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opts.success();
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};
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transmit.send_message(request, success);
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assert(success_func_called);
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channel.xhr_error_message = function (msg) {
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assert.equal(msg, 'Error sending message');
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return msg;
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};
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channel.post = function (opts) {
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assert.equal(opts.url, '/json/messages');
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assert.equal(opts.data.foo, 'bar');
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2019-11-02 00:06:25 +01:00
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const xhr = 'whatever';
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2018-02-20 13:08:50 +01:00
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opts.error(xhr, 'timeout');
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};
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2019-11-02 00:06:25 +01:00
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let error_func_called;
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const error = function (response) {
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2018-02-20 13:08:50 +01:00
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assert.equal(response, 'Error sending message');
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error_func_called = true;
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};
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transmit.send_message(request, success, error);
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assert(error_func_called);
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2018-05-15 12:40:07 +02:00
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});
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2018-02-20 13:08:50 +01:00
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2018-05-15 12:40:07 +02:00
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run_test('transmit_message_ajax_reload_pending', () => {
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2019-11-02 00:06:25 +01:00
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const success = function () { throw 'unexpected success'; };
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2018-02-20 13:08:50 +01:00
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2018-08-04 15:40:25 +02:00
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reload_state.is_pending = function () {
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2018-02-20 13:08:50 +01:00
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return true;
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};
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2019-11-02 00:06:25 +01:00
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let reload_initiated;
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2018-02-20 13:08:50 +01:00
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reload.initiate = function (opts) {
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reload_initiated = true;
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assert.deepEqual(opts, {
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2018-05-07 03:30:13 +02:00
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immediate: true,
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save_pointer: true,
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save_narrow: true,
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save_compose: true,
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send_after_reload: true,
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2018-02-20 13:08:50 +01:00
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});
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};
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2019-11-02 00:06:25 +01:00
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const request = {foo: 'bar'};
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2018-02-20 13:08:50 +01:00
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2019-11-02 00:06:25 +01:00
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let error_func_called;
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const error = function (response) {
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2018-02-20 13:08:50 +01:00
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assert.equal(response, 'Error sending message');
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error_func_called = true;
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};
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error_func_called = false;
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channel.post = function (opts) {
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assert.equal(opts.url, '/json/messages');
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assert.equal(opts.data.foo, 'bar');
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2019-11-02 00:06:25 +01:00
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const xhr = 'whatever';
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2018-02-20 13:08:50 +01:00
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opts.error(xhr, 'bad request');
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};
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transmit.send_message(request, success, error);
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assert(!error_func_called);
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assert(reload_initiated);
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2018-05-15 12:40:07 +02:00
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});
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2018-02-23 16:18:27 +01:00
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run_test('reply_message_stream', () => {
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const stream_message = {
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type: 'stream',
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stream: 'social',
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2018-12-23 16:49:14 +01:00
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topic: 'lunch',
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2018-02-23 16:18:27 +01:00
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sender_full_name: 'Alice',
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2018-10-13 02:31:49 +02:00
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sender_id: 123,
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2018-02-23 16:18:27 +01:00
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};
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const content = 'hello';
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2019-11-02 00:06:25 +01:00
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let send_message_args;
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2018-02-23 16:18:27 +01:00
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transmit.send_message = (args) => {
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send_message_args = args;
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};
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page_params.user_id = 44;
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page_params.queue_id = 66;
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sent_messages.get_new_local_id = () => 99;
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transmit.reply_message({
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message: stream_message,
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content: content,
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});
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assert.deepEqual(send_message_args, {
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sender_id: 44,
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queue_id: 66,
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local_id: 99,
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type: 'stream',
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to: 'social',
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content: '@**Alice** hello',
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2018-12-23 16:49:14 +01:00
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topic: 'lunch',
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2018-02-23 16:18:27 +01:00
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});
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});
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run_test('reply_message_private', () => {
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const fred = {
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user_id: 3,
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email: 'fred@example.com',
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full_name: 'Fred Frost',
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};
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people.add(fred);
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people.is_my_user_id = () => false;
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const pm_message = {
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type: 'private',
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display_recipient: [
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2020-01-01 13:02:34 +01:00
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{id: fred.user_id},
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2018-02-23 16:18:27 +01:00
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],
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};
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const content = 'hello';
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2019-11-02 00:06:25 +01:00
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let send_message_args;
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2018-02-23 16:18:27 +01:00
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transmit.send_message = (args) => {
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send_message_args = args;
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};
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page_params.user_id = 155;
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page_params.queue_id = 177;
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sent_messages.get_new_local_id = () => 199;
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transmit.reply_message({
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message: pm_message,
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content: content,
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});
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assert.deepEqual(send_message_args, {
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sender_id: 155,
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queue_id: 177,
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local_id: 199,
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type: 'private',
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to: '["fred@example.com"]',
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content: 'hello',
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});
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});
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run_test('reply_message_errors', () => {
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const bogus_message = {
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type: 'bogus',
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};
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blueslip.set_test_data('error', 'unknown message type: bogus');
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transmit.reply_message({
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message: bogus_message,
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});
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blueslip.clear_test_data();
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});
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