prosody
51be24b16e8a
util/error.lua

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util/error.lua @ 11050:51be24b16e8a

util.error: Allow optional tracebacks to be injected on errors This allows extra debug info to be provided for development purposes.
author Matthew Wild <mwild1@gmail.com>
date Fri, 28 Aug 2020 12:40:59 +0100
parent 10501:e8186aba1583
child 11051:08539aa129ee
comparison
equal deleted inserted replaced
11049:f103f59ea2b5 11050:51be24b16e8a
4 return ("error<%s:%s:%s>"):format(self.type, self.condition, self.text or ""); 4 return ("error<%s:%s:%s>"):format(self.type, self.condition, self.text or "");
5 end 5 end
6 6
7 local function is_err(e) 7 local function is_err(e)
8 return getmetatable(e) == error_mt; 8 return getmetatable(e) == error_mt;
9 end
10
11 local auto_inject_traceback = false;
12
13 local function configure(opt)
14 if opt.auto_inject_traceback ~= nil then
15 auto_inject_traceback = opt.auto_inject_traceback;
16 end
9 end 17 end
10 18
11 -- Do we want any more well-known fields? 19 -- Do we want any more well-known fields?
12 -- Or could we just copy all fields from `e`? 20 -- Or could we just copy all fields from `e`?
13 -- Sometimes you want variable details in the `text`, how to handle that? 21 -- Sometimes you want variable details in the `text`, how to handle that?
15 -- Should the `type` be restricted to the stanza error types or free-form? 23 -- Should the `type` be restricted to the stanza error types or free-form?
16 -- What to set `type` to for stream errors or SASL errors? Those don't have a 'type' attr. 24 -- What to set `type` to for stream errors or SASL errors? Those don't have a 'type' attr.
17 25
18 local function new(e, context, registry) 26 local function new(e, context, registry)
19 local template = (registry and registry[e]) or e or {}; 27 local template = (registry and registry[e]) or e or {};
28 context = context or template.context or { _error_id = e };
29
30 if auto_inject_traceback then
31 context.traceback = debug.traceback("error stack", 2);
32 end
33
20 return setmetatable({ 34 return setmetatable({
21 type = template.type or "cancel"; 35 type = template.type or "cancel";
22 condition = template.condition or "undefined-condition"; 36 condition = template.condition or "undefined-condition";
23 text = template.text; 37 text = template.text;
24 code = template.code; 38 code = template.code;
55 return { 69 return {
56 new = new; 70 new = new;
57 coerce = coerce; 71 coerce = coerce;
58 is_err = is_err; 72 is_err = is_err;
59 from_stanza = from_stanza; 73 from_stanza = from_stanza;
74 configure = configure;
60 } 75 }