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-rw-r--r--plugins/mod_csi_simple.lua146
1 files changed, 87 insertions, 59 deletions
diff --git a/plugins/mod_csi_simple.lua b/plugins/mod_csi_simple.lua
index da2dd953..24a2f1ce 100644
--- a/plugins/mod_csi_simple.lua
+++ b/plugins/mod_csi_simple.lua
@@ -9,40 +9,7 @@ module:depends"csi"
local jid = require "util.jid";
local st = require "util.stanza";
local dt = require "util.datetime";
-local new_queue = require "util.queue".new;
-
-local function new_pump(output, ...)
- -- luacheck: ignore 212/self
- local q = new_queue(...);
- local flush = true;
- function q:pause()
- flush = false;
- end
- function q:resume()
- flush = true;
- return q:flush();
- end
- local push = q.push;
- function q:push(item)
- local ok = push(self, item);
- if not ok then
- q:flush();
- output(item, self);
- elseif flush then
- return q:flush();
- end
- return true;
- end
- function q:flush()
- local item = self:pop();
- while item do
- output(item, self);
- item = self:pop();
- end
- return true;
- end
- return q;
-end
+local filters = require "util.filters";
local queue_size = module:get_option_number("csi_queue_size", 256);
@@ -84,37 +51,98 @@ module:hook("csi-is-stanza-important", function (event)
return true;
end, -1);
-module:hook("csi-client-inactive", function (event)
- local session = event.origin;
- if session.pump then
- session.pump:pause();
+local function with_timestamp(stanza, from)
+ if st.is_stanza(stanza) and stanza.attr.xmlns == nil and stanza.name ~= "iq" then
+ stanza = st.clone(stanza);
+ stanza:add_direct_child(st.stanza("delay", {xmlns = "urn:xmpp:delay", from = from, stamp = dt.datetime()}));
+ end
+ return stanza;
+end
+
+local function manage_buffer(stanza, session)
+ local ctr = session.csi_counter or 0;
+ if ctr >= queue_size then
+ session.log("debug", "Queue size limit hit, flushing buffer (queue size is %d)", session.csi_counter);
+ session.conn:resume_writes();
+ elseif module:fire_event("csi-is-stanza-important", { stanza = stanza, session = session }) then
+ session.log("debug", "Important stanza, flushing buffer (queue size is %d)", session.csi_counter);
+ session.conn:resume_writes();
else
- local bare_jid = jid.join(session.username, session.host);
- local send = session.send;
- session._orig_send = send;
- local pump = new_pump(session.send, queue_size);
- pump:pause();
- session.pump = pump;
- function session.send(stanza)
- if session.state == "active" or module:fire_event("csi-is-stanza-important", { stanza = stanza, session = session }) then
- pump:flush();
- send(stanza);
- else
- if st.is_stanza(stanza) and stanza.attr.xmlns == nil and stanza.name ~= "iq" then
- stanza = st.clone(stanza);
- stanza:add_direct_child(st.stanza("delay", {xmlns = "urn:xmpp:delay", from = bare_jid, stamp = dt.datetime()}));
- end
- pump:push(stanza);
- end
- return true;
- end
+ stanza = with_timestamp(stanza, jid.join(session.username, session.host))
end
+ session.csi_counter = ctr + 1;
+ return stanza;
+end
+
+local function flush_buffer(data, session)
+ if session.csi_flushing then
+ return data;
+ end
+ session.csi_flushing = true;
+ session.log("debug", "Client sent something, flushing buffer once (queue size is %d)", session.csi_counter);
+ session.conn:resume_writes();
+ return data;
+end
+
+function enable_optimizations(session)
+ if session.conn and session.conn.pause_writes then
+ session.conn:pause_writes();
+ filters.add_filter(session, "stanzas/out", manage_buffer);
+ filters.add_filter(session, "bytes/in", flush_buffer);
+ else
+ session.log("warn", "Session connection does not support write pausing");
+ end
+end
+
+function disable_optimizations(session)
+ session.csi_flushing = nil;
+ filters.remove_filter(session, "stanzas/out", manage_buffer);
+ filters.remove_filter(session, "bytes/in", flush_buffer);
+ if session.conn and session.conn.resume_writes then
+ session.conn:resume_writes();
+ end
+end
+
+module:hook("csi-client-inactive", function (event)
+ local session = event.origin;
+ enable_optimizations(session);
end);
module:hook("csi-client-active", function (event)
local session = event.origin;
- if session.pump then
- session.pump:resume();
+ disable_optimizations(session);
+end);
+
+module:hook("pre-resource-unbind", function (event)
+ local session = event.session;
+ disable_optimizations(session);
+end);
+
+module:hook("c2s-ondrain", function (event)
+ local session = event.session;
+ if session.state == "inactive" and session.conn and session.conn.pause_writes then
+ session.conn:pause_writes();
+ session.log("debug", "Buffer flushed, resuming inactive mode (queue size was %d)", session.csi_counter);
+ session.csi_counter = 0;
end
end);
+function module.load()
+ for _, user_session in pairs(prosody.hosts[module.host].sessions) do
+ for _, session in pairs(user_session.sessions) do
+ if session.state == "inactive" then
+ enable_optimizations(session);
+ end
+ end
+ end
+end
+
+function module.unload()
+ for _, user_session in pairs(prosody.hosts[module.host].sessions) do
+ for _, session in pairs(user_session.sessions) do
+ if session.state == "inactive" then
+ disable_optimizations(session);
+ end
+ end
+ end
+end