prosody
2b3adaa6d38e
net/resolvers/chain.lua

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net/resolvers/chain.lua @ 12469:2b3adaa6d38e

util.strbitop: Reduce scope of functions Equivalent to 'local' in Lua, these functions are exported via the luaopen_ function, which is the only one needing to be visible outside of the file. Pointed out by Link Mauve at some point, but there wasn't really any rush here.
author Kim Alvefur <zash@zash.se>
date Sat, 23 Apr 2022 14:29:43 +0200
parent 12204:7c397a49d163
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
12204
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
Kim Alvefur <zash@zash.se>
parents:
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1
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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2 local methods = {};
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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3 local resolver_mt = { __index = methods };
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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4
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
Kim Alvefur <zash@zash.se>
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5 -- Find the next target to connect to, and
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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6 -- pass it to cb()
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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7 function methods:next(cb)
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
Kim Alvefur <zash@zash.se>
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8 if self.resolvers then
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
Kim Alvefur <zash@zash.se>
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9 if not self.resolver then
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
Kim Alvefur <zash@zash.se>
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10 if #self.resolvers == 0 then
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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11 cb(nil);
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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12 return;
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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13 end
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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14 local next_resolver = table.remove(self.resolvers, 1);
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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15 self.resolver = next_resolver;
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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16 end
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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17 self.resolver:next(function (...)
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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18 if self.resolver then
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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19 self.last_error = self.resolver.last_error;
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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20 end
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
Kim Alvefur <zash@zash.se>
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21 if ... == nil then
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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22 self.resolver = nil;
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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23 self:next(cb);
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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24 else
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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25 cb(...);
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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26 end
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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27 end);
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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28 return;
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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29 end
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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30 end
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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31
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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32 local function new(resolvers)
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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33 return setmetatable({ resolvers = resolvers }, resolver_mt);
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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34 end
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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35
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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36 return {
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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37 new = new;
7c397a49d163 net.resolvers.chain: A resolver for combining other resolvers
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38 };