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net/resolvers/chain.lua @ 12464:f4c59af273a3
mod_admin_shell: Add watch:stanzas() command
author | Matthew Wild <mwild1@gmail.com> |
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date | Wed, 23 Mar 2022 13:43:08 +0000 |
parent | 12204:7c397a49d163 |
rev | line source |
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net.resolvers.chain: A resolver for combining other resolvers
Kim Alvefur <zash@zash.se>
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1 |
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net.resolvers.chain: A resolver for combining other resolvers
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2 local methods = {}; |
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3 local resolver_mt = { __index = methods }; |
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4 |
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5 -- Find the next target to connect to, and |
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6 -- pass it to cb() |
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7 function methods:next(cb) |
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8 if self.resolvers then |
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net.resolvers.chain: A resolver for combining other resolvers
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9 if not self.resolver then |
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net.resolvers.chain: A resolver for combining other resolvers
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10 if #self.resolvers == 0 then |
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net.resolvers.chain: A resolver for combining other resolvers
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11 cb(nil); |
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12 return; |
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13 end |
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14 local next_resolver = table.remove(self.resolvers, 1); |
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15 self.resolver = next_resolver; |
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16 end |
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17 self.resolver:next(function (...) |
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18 if self.resolver then |
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19 self.last_error = self.resolver.last_error; |
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20 end |
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21 if ... == nil then |
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22 self.resolver = nil; |
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23 self:next(cb); |
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24 else |
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25 cb(...); |
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26 end |
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27 end); |
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28 return; |
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29 end |
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30 end |
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31 |
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32 local function new(resolvers) |
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33 return setmetatable({ resolvers = resolvers }, resolver_mt); |
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34 end |
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35 |
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36 return { |
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37 new = new; |
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38 }; |