prosody
00295a8e5bcf
util/throttle.lua

Find changesets by keywords by author, files, the commit message, revision number or hash, or revset expression.

Software / code / prosody

Annotate

util/throttle.lua @ 11659:00295a8e5bcf

net.server_epoll: Separate handling of new incoming and outgoing connections The :init method is more suited for new outgoing connections, which is why it uses the connect_timeout setting. Depending on whether a newly accepted connection is to a Direct TLS port or not, it should be handled differently, and was already. The :starttls method sets up timeouts on its own, so the one set in :init was not needed. Newly accepted plain TCP connections don't need a write timeout set, a read timeout is enough.
author Kim Alvefur <zash@zash.se>
date Thu, 08 Jul 2021 17:52:59 +0200
parent 8555:4f0f5b49bb03
child 12975:d10957394a3c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
4362
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1
7988
dc758422d896 util.statistics,statsd,throttle,timer: Replace dependency on LuaSockect with util.time for precision time
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
2 local gettime = require "util.time".now
4466
28e0bf9cf0f5 util.throttle: Import setmetatable
Matthew Wild <mwild1@gmail.com>
parents: 4362
diff changeset
3 local setmetatable = setmetatable;
4362
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
4
6777
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 4952
diff changeset
5 local _ENV = nil;
8555
4f0f5b49bb03 vairious: Add annotation when an empty environment is set [luacheck]
Kim Alvefur <zash@zash.se>
parents: 8272
diff changeset
6 -- luacheck: std none
4362
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
7
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
8 local throttle = {};
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
9 local throttle_mt = { __index = throttle };
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
10
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
11 function throttle:update()
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
12 local newt = gettime();
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
13 local elapsed = newt - self.t;
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
14 self.t = newt;
8245
9499db96c032 util.throttle: Fix initial time setting (double accounting the first time) and fractional balance updates (0.1*10 was not the same as 1*1)
Waqas Hussain <waqas20@gmail.com>
parents: 7988
diff changeset
15 local balance = (self.rate * elapsed) + self.balance;
4362
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
16 if balance > self.max then
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
17 self.balance = self.max;
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
18 else
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
19 self.balance = balance;
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
20 end
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
21 return self.balance;
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
22 end
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
23
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
24 function throttle:peek(cost)
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
25 cost = cost or 1;
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
26 return self.balance >= cost or self:update() >= cost;
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
27 end
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
28
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
29 function throttle:poll(cost, split)
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
30 if self:peek(cost) then
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
31 self.balance = self.balance - cost;
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
32 return true;
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
33 else
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
34 local balance = self.balance;
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
35 if split then
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
36 self.balance = 0;
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
37 end
4467
fc8a22936b3c util.throttle: Fix 'outstanding' return value
Matthew Wild <mwild1@gmail.com>
parents: 4466
diff changeset
38 return false, balance, (cost-balance);
4362
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
39 end
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
40 end
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
41
6777
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 4952
diff changeset
42 local function create(max, period)
8245
9499db96c032 util.throttle: Fix initial time setting (double accounting the first time) and fractional balance updates (0.1*10 was not the same as 1*1)
Waqas Hussain <waqas20@gmail.com>
parents: 7988
diff changeset
43 return setmetatable({ rate = max / period, max = max, t = gettime(), balance = max }, throttle_mt);
4362
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
44 end
851885cb332d util.throttle: Generic module by waqas to limit something over some time
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
45
6777
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 4952
diff changeset
46 return {
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 4952
diff changeset
47 create = create;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 4952
diff changeset
48 };