Mercurial > prosody-modules
annotate mod_mam/rsm.lib.lua @ 4249:64aa1d9d70ac
mod_rest: Catch and log errors in callback promise chain
From the code it looks like it should be possible to reply to an error
stanza, but it did not. Turns out I was saved by my local developer mode
module which throws errors if an attempt is made to create an errror
reply to an error stanza. However nothing collects this error from the
promise, so all I got was confusion.
author | Kim Alvefur <zash@zash.se> |
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date | Sun, 15 Nov 2020 16:25:49 +0100 |
parents | 57ee26681561 |
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rev | line source |
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701
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1 local stanza = require"util.stanza".stanza; |
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2 local tostring, tonumber = tostring, tonumber; |
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3 local type = type; |
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4 local pairs = pairs; |
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5 |
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6 local xmlns_rsm = 'http://jabber.org/protocol/rsm'; |
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7 |
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8 local element_parsers = {}; |
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9 |
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10 do |
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11 local parsers = element_parsers; |
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12 local function xs_int(st) |
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13 return tonumber((st:get_text())); |
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14 end |
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15 local function xs_string(st) |
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16 return st:get_text(); |
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17 end |
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18 |
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19 parsers.after = xs_string; |
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20 parsers.before = function(st) |
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21 local text = st:get_text(); |
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22 return text == "" or text; |
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23 end; |
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24 parsers.max = xs_int; |
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25 parsers.index = xs_int; |
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26 |
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27 parsers.first = function(st) |
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28 return { index = tonumber(st.attr.index); st:get_text() }; |
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29 end; |
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30 parsers.last = xs_string; |
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31 parsers.count = xs_int; |
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32 end |
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33 |
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34 local element_generators = setmetatable({ |
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35 first = function(st, data) |
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36 if type(data) == "table" then |
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37 st:tag("first", { index = data.index }):text(data[1]):up(); |
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38 else |
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39 st:tag("first"):text(tostring(data)):up(); |
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40 end |
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41 end; |
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42 before = function(st, data) |
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43 if data == true then |
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44 st:tag("before"):up(); |
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45 else |
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46 st:tag("before"):text(tostring(data)):up(); |
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47 end |
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48 end |
701
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49 }, { |
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50 __index = function(_, name) |
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51 return function(st, data) |
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52 st:tag(name):text(tostring(data)):up(); |
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53 end |
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54 end; |
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55 }); |
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56 |
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57 |
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58 local function parse(set) |
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59 local rs = {}; |
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60 for tag in set:childtags() do |
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61 local name = tag.name; |
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62 local parser = name and element_parsers[name]; |
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63 if parser then |
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64 rs[name] = parser(tag); |
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65 end |
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66 end |
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67 return rs; |
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68 end |
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69 |
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70 local function generate(t) |
703 | 71 local st = stanza("set", { xmlns = xmlns_rsm }); |
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72 for k,v in pairs(t) do |
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73 if element_parsers[k] then |
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74 element_generators[k](st, v); |
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75 end |
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76 end |
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77 return st; |
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78 end |
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79 |
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80 local function get(st) |
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81 local set = st:get_child("set", xmlns_rsm); |
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82 if set and #set.tags > 0 then |
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83 return parse(set); |
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84 end |
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85 end |
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86 |
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87 return { parse = parse, generate = generate, get = get }; |