prosody
34ac05f6bd10
util/smqueue.lua

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util/smqueue.lua @ 13744:34ac05f6bd10 13.0

core.configmanager: Fix reporting delayed warnings from global section A Credential in the global section would be stored at delayed_warnings["*/secret"], but get("example.com","secret") would look for delayed_warnings["example.com/secret"] Storing the warnings in the config itself has the unfortunate side-effect that the config now contains util.error objects, which may be awkward if something bypasses get(). Should rawget() also do this filtering? getconfig() too? Currently this only affects prosodyctl, so maybe it won't be much of a problem.
author Kim Alvefur <zash@zash.se>
date Sat, 22 Feb 2025 00:08:18 +0100
parent 12975:d10957394a3c
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d10957394a3c util: Prefix module imports with prosody namespace
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1 local queue = require("prosody.util.queue");
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daced16154fa util.smqueue: Abstract queue with acknowledgements and overflow
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2
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3 local lib = { smqueue = {} }
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4
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5 local smqueue = lib.smqueue;
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6
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7 function smqueue:push(v)
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8 self._head = self._head + 1;
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9
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10 assert(self._queue:push(v));
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11 end
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12
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13 function smqueue:ack(h)
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14 if h < self._tail then
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15 return nil, "tail"
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16 elseif h > self._head then
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17 return nil, "head"
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18 end
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19
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20 local acked = {};
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21 self._tail = h;
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22 local expect = self._head - self._tail;
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23 while expect < self._queue:count() do
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24 local v = self._queue:pop();
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25 if not v then return nil, "pop" end
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26 table.insert(acked, v);
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27 end
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28 return acked
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29 end
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30
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31 function smqueue:count_unacked() return self._head - self._tail end
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32
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33 function smqueue:count_acked() return self._tail end
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34
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35 function smqueue:resumable() return self._queue:count() >= (self._head - self._tail) end
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36
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37 function smqueue:resume() return self._queue:items() end
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38
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39 function smqueue:consume() return self._queue:consume() end
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40
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4860da718e87 util.smqueue: Simplify compat table, fix dependent modules (thanks Martin)
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41 function smqueue:table()
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42 local t = {};
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43 for i, v in self:resume() do t[i] = v; end
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44 return t
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45 end
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46
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47 local function freeze(q) return { head = q._head; tail = q._tail } end
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48
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49 local queue_mt = { __name = "smqueue"; __index = smqueue; __len = smqueue.count_unacked; __freeze = freeze }
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50
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51 function lib.new(size)
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52 assert(size > 0);
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53 return setmetatable({ _head = 0; _tail = 0; _queue = queue.new(size, true) }, queue_mt)
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54 end
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55
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56 return lib