prosody
0d8bf401fa73
util/helpers.lua

Find changesets by keywords by author, files, the commit message, revision number or hash, or revset expression.

Software / code / prosody

Annotate

util/helpers.lua @ 12878:0d8bf401fa73 0.12

core.sessionmanager: Mark session as destroyed to prevent reentry If it reaches this point, then the session will be most definitely be destroyed, so try to prevent destroy_session() from being called again.
author Kim Alvefur <zash@zash.se>
date Thu, 19 Jan 2023 21:40:09 +0100
parent 11059:ad89e3cc67b6
child 12975:d10957394a3c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1964
101a8df23b29 util.helpers: Add copyright header
Matthew Wild <mwild1@gmail.com>
parents: 1959
diff changeset
1 -- Prosody IM
2923
b7049746bd29 Update copyright headers for 2010
Matthew Wild <mwild1@gmail.com>
parents: 1964
diff changeset
2 -- Copyright (C) 2008-2010 Matthew Wild
b7049746bd29 Update copyright headers for 2010
Matthew Wild <mwild1@gmail.com>
parents: 1964
diff changeset
3 -- Copyright (C) 2008-2010 Waqas Hussain
5776
bd0ff8ae98a8 Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 5415
diff changeset
4 --
1964
101a8df23b29 util.helpers: Add copyright header
Matthew Wild <mwild1@gmail.com>
parents: 1959
diff changeset
5 -- This project is MIT/X11 licensed. Please see the
101a8df23b29 util.helpers: Add copyright header
Matthew Wild <mwild1@gmail.com>
parents: 1959
diff changeset
6 -- COPYING file in the source package for more information.
101a8df23b29 util.helpers: Add copyright header
Matthew Wild <mwild1@gmail.com>
parents: 1959
diff changeset
7 --
1531
21051377f11b util.helpers: New util library to aid with debugging, etc.
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
8
4681
3299223bbed5 util.helpers: Add show_events(), to show the events and handlers in a util.events object
Matthew Wild <mwild1@gmail.com>
parents: 4536
diff changeset
9 local debug = require "util.debug";
3299223bbed5 util.helpers: Add show_events(), to show the events and handlers in a util.events object
Matthew Wild <mwild1@gmail.com>
parents: 4536
diff changeset
10
1531
21051377f11b util.helpers: New util library to aid with debugging, etc.
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
11 -- Helper functions for debugging
21051377f11b util.helpers: New util library to aid with debugging, etc.
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
12
21051377f11b util.helpers: New util library to aid with debugging, etc.
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
13 local log = require "util.logger".init("util.debug");
21051377f11b util.helpers: New util library to aid with debugging, etc.
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
14
6777
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
15 local function log_events(events, name, logger)
1531
21051377f11b util.helpers: New util library to aid with debugging, etc.
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
16 local f = events.fire_event;
21051377f11b util.helpers: New util library to aid with debugging, etc.
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
17 if not f then
21051377f11b util.helpers: New util library to aid with debugging, etc.
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
18 error("Object does not appear to be a util.events object");
21051377f11b util.helpers: New util library to aid with debugging, etc.
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
19 end
21051377f11b util.helpers: New util library to aid with debugging, etc.
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
20 logger = logger or log;
21051377f11b util.helpers: New util library to aid with debugging, etc.
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
21 name = name or tostring(events);
21051377f11b util.helpers: New util library to aid with debugging, etc.
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
22 function events.fire_event(event, ...)
21051377f11b util.helpers: New util library to aid with debugging, etc.
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
23 logger("debug", "%s firing event: %s", name, event);
1795
0e933d6f2c31 util.helpers: It would be a good idea to fire an event when we say we are
Matthew Wild <mwild1@gmail.com>
parents: 1531
diff changeset
24 return f(event, ...);
1531
21051377f11b util.helpers: New util library to aid with debugging, etc.
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
25 end
11059
ad89e3cc67b6 util.helpers: when logging events, log individual handler calls
Matthew Wild <mwild1@gmail.com>
parents: 8411
diff changeset
26
ad89e3cc67b6 util.helpers: when logging events, log individual handler calls
Matthew Wild <mwild1@gmail.com>
parents: 8411
diff changeset
27 local function event_handler_hook(handler, event_name, event_data)
ad89e3cc67b6 util.helpers: when logging events, log individual handler calls
Matthew Wild <mwild1@gmail.com>
parents: 8411
diff changeset
28 logger("debug", "calling handler for %s: %s", event_name, handler);
ad89e3cc67b6 util.helpers: when logging events, log individual handler calls
Matthew Wild <mwild1@gmail.com>
parents: 8411
diff changeset
29 local ok, ret = pcall(handler, event_data);
ad89e3cc67b6 util.helpers: when logging events, log individual handler calls
Matthew Wild <mwild1@gmail.com>
parents: 8411
diff changeset
30 if not ok then
ad89e3cc67b6 util.helpers: when logging events, log individual handler calls
Matthew Wild <mwild1@gmail.com>
parents: 8411
diff changeset
31 logger("error", "error in event handler %s: %s", handler, ret);
ad89e3cc67b6 util.helpers: when logging events, log individual handler calls
Matthew Wild <mwild1@gmail.com>
parents: 8411
diff changeset
32 error(ret);
ad89e3cc67b6 util.helpers: when logging events, log individual handler calls
Matthew Wild <mwild1@gmail.com>
parents: 8411
diff changeset
33 end
ad89e3cc67b6 util.helpers: when logging events, log individual handler calls
Matthew Wild <mwild1@gmail.com>
parents: 8411
diff changeset
34 if ret ~= nil then
ad89e3cc67b6 util.helpers: when logging events, log individual handler calls
Matthew Wild <mwild1@gmail.com>
parents: 8411
diff changeset
35 logger("debug", "event chain ended for %s by %s with result: %s", event_name, handler, ret);
ad89e3cc67b6 util.helpers: when logging events, log individual handler calls
Matthew Wild <mwild1@gmail.com>
parents: 8411
diff changeset
36 end
ad89e3cc67b6 util.helpers: when logging events, log individual handler calls
Matthew Wild <mwild1@gmail.com>
parents: 8411
diff changeset
37 return ret;
ad89e3cc67b6 util.helpers: when logging events, log individual handler calls
Matthew Wild <mwild1@gmail.com>
parents: 8411
diff changeset
38 end
ad89e3cc67b6 util.helpers: when logging events, log individual handler calls
Matthew Wild <mwild1@gmail.com>
parents: 8411
diff changeset
39 events.set_debug_hook(event_handler_hook);
1531
21051377f11b util.helpers: New util library to aid with debugging, etc.
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
40 events[events.fire_event] = f;
21051377f11b util.helpers: New util library to aid with debugging, etc.
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
41 return events;
21051377f11b util.helpers: New util library to aid with debugging, etc.
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
42 end
21051377f11b util.helpers: New util library to aid with debugging, etc.
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
43
6777
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
44 local function revert_log_events(events)
4536
285450536ec0 util.helpers: After nearly 'fixing' this code, I conclude it instead only deserves a bigger smile
Matthew Wild <mwild1@gmail.com>
parents: 2923
diff changeset
45 events.fire_event, events[events.fire_event] = events[events.fire_event], nil; -- :))
11059
ad89e3cc67b6 util.helpers: when logging events, log individual handler calls
Matthew Wild <mwild1@gmail.com>
parents: 8411
diff changeset
46 events.set_debug_hook(nil);
1531
21051377f11b util.helpers: New util library to aid with debugging, etc.
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
47 end
21051377f11b util.helpers: New util library to aid with debugging, etc.
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
48
6783
cd44427c7295 util.helpers: Fix order of functions using each other [fixes 00412b36166f]
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
49 local function log_host_events(host)
cd44427c7295 util.helpers: Fix order of functions using each other [fixes 00412b36166f]
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
50 return log_events(prosody.hosts[host].events, host);
cd44427c7295 util.helpers: Fix order of functions using each other [fixes 00412b36166f]
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
51 end
cd44427c7295 util.helpers: Fix order of functions using each other [fixes 00412b36166f]
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
52
cd44427c7295 util.helpers: Fix order of functions using each other [fixes 00412b36166f]
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
53 local function revert_log_host_events(host)
cd44427c7295 util.helpers: Fix order of functions using each other [fixes 00412b36166f]
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
54 return revert_log_events(prosody.hosts[host].events);
cd44427c7295 util.helpers: Fix order of functions using each other [fixes 00412b36166f]
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
55 end
cd44427c7295 util.helpers: Fix order of functions using each other [fixes 00412b36166f]
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
56
6777
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
57 local function show_events(events, specific_event)
4681
3299223bbed5 util.helpers: Add show_events(), to show the events and handlers in a util.events object
Matthew Wild <mwild1@gmail.com>
parents: 4536
diff changeset
58 local event_handlers = events._handlers;
3299223bbed5 util.helpers: Add show_events(), to show the events and handlers in a util.events object
Matthew Wild <mwild1@gmail.com>
parents: 4536
diff changeset
59 local events_array = {};
3299223bbed5 util.helpers: Add show_events(), to show the events and handlers in a util.events object
Matthew Wild <mwild1@gmail.com>
parents: 4536
diff changeset
60 local event_handler_arrays = {};
7720
7166750fb963 util.helpers: List event priorities instead of useless array index
Kim Alvefur <zash@zash.se>
parents: 6783
diff changeset
61 for event, priorities in pairs(events._event_map) do
4681
3299223bbed5 util.helpers: Add show_events(), to show the events and handlers in a util.events object
Matthew Wild <mwild1@gmail.com>
parents: 4536
diff changeset
62 local handlers = event_handlers[event];
4705
447f5a94792d util.helpers: show_events(): Make more robust, and allow filtering results to a specific event
Matthew Wild <mwild1@gmail.com>
parents: 4681
diff changeset
63 if handlers and (event == specific_event or not specific_event) then
447f5a94792d util.helpers: show_events(): Make more robust, and allow filtering results to a specific event
Matthew Wild <mwild1@gmail.com>
parents: 4681
diff changeset
64 table.insert(events_array, event);
447f5a94792d util.helpers: show_events(): Make more robust, and allow filtering results to a specific event
Matthew Wild <mwild1@gmail.com>
parents: 4681
diff changeset
65 local handler_strings = {};
447f5a94792d util.helpers: show_events(): Make more robust, and allow filtering results to a specific event
Matthew Wild <mwild1@gmail.com>
parents: 4681
diff changeset
66 for i, handler in ipairs(handlers) do
447f5a94792d util.helpers: show_events(): Make more robust, and allow filtering results to a specific event
Matthew Wild <mwild1@gmail.com>
parents: 4681
diff changeset
67 local upvals = debug.string_from_var_table(debug.get_upvalues_table(handler));
8411
a9e8523a5e73 util.helpers: Handle missing priorities, happens due to wildcard magic in net.http.server (fixes #1044)
Kim Alvefur <zash@zash.se>
parents: 7720
diff changeset
68 handler_strings[i] = " "..(priorities[handler] or "?")..": "..tostring(handler)..(upvals and ("\n "..upvals) or "");
4705
447f5a94792d util.helpers: show_events(): Make more robust, and allow filtering results to a specific event
Matthew Wild <mwild1@gmail.com>
parents: 4681
diff changeset
69 end
447f5a94792d util.helpers: show_events(): Make more robust, and allow filtering results to a specific event
Matthew Wild <mwild1@gmail.com>
parents: 4681
diff changeset
70 event_handler_arrays[event] = handler_strings;
4681
3299223bbed5 util.helpers: Add show_events(), to show the events and handlers in a util.events object
Matthew Wild <mwild1@gmail.com>
parents: 4536
diff changeset
71 end
3299223bbed5 util.helpers: Add show_events(), to show the events and handlers in a util.events object
Matthew Wild <mwild1@gmail.com>
parents: 4536
diff changeset
72 end
3299223bbed5 util.helpers: Add show_events(), to show the events and handlers in a util.events object
Matthew Wild <mwild1@gmail.com>
parents: 4536
diff changeset
73 table.sort(events_array);
3299223bbed5 util.helpers: Add show_events(), to show the events and handlers in a util.events object
Matthew Wild <mwild1@gmail.com>
parents: 4536
diff changeset
74 local i = 1;
4705
447f5a94792d util.helpers: show_events(): Make more robust, and allow filtering results to a specific event
Matthew Wild <mwild1@gmail.com>
parents: 4681
diff changeset
75 while i <= #events_array do
4681
3299223bbed5 util.helpers: Add show_events(), to show the events and handlers in a util.events object
Matthew Wild <mwild1@gmail.com>
parents: 4536
diff changeset
76 local handlers = event_handler_arrays[events_array[i]];
3299223bbed5 util.helpers: Add show_events(), to show the events and handlers in a util.events object
Matthew Wild <mwild1@gmail.com>
parents: 4536
diff changeset
77 for j=#handlers, 1, -1 do
3299223bbed5 util.helpers: Add show_events(), to show the events and handlers in a util.events object
Matthew Wild <mwild1@gmail.com>
parents: 4536
diff changeset
78 table.insert(events_array, i+1, handlers[j]);
3299223bbed5 util.helpers: Add show_events(), to show the events and handlers in a util.events object
Matthew Wild <mwild1@gmail.com>
parents: 4536
diff changeset
79 end
3299223bbed5 util.helpers: Add show_events(), to show the events and handlers in a util.events object
Matthew Wild <mwild1@gmail.com>
parents: 4536
diff changeset
80 if i > 1 then events_array[i] = "\n"..events_array[i]; end
3299223bbed5 util.helpers: Add show_events(), to show the events and handlers in a util.events object
Matthew Wild <mwild1@gmail.com>
parents: 4536
diff changeset
81 i = i + #handlers + 1
4705
447f5a94792d util.helpers: show_events(): Make more robust, and allow filtering results to a specific event
Matthew Wild <mwild1@gmail.com>
parents: 4681
diff changeset
82 end
4681
3299223bbed5 util.helpers: Add show_events(), to show the events and handlers in a util.events object
Matthew Wild <mwild1@gmail.com>
parents: 4536
diff changeset
83 return table.concat(events_array, "\n");
3299223bbed5 util.helpers: Add show_events(), to show the events and handlers in a util.events object
Matthew Wild <mwild1@gmail.com>
parents: 4536
diff changeset
84 end
3299223bbed5 util.helpers: Add show_events(), to show the events and handlers in a util.events object
Matthew Wild <mwild1@gmail.com>
parents: 4536
diff changeset
85
6777
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
86 local function get_upvalue(f, get_name)
1959
f56670ce64de util.helpers: Add get_upvalue(function, name) helper
Matthew Wild <mwild1@gmail.com>
parents: 1795
diff changeset
87 local i, name, value = 0;
f56670ce64de util.helpers: Add get_upvalue(function, name) helper
Matthew Wild <mwild1@gmail.com>
parents: 1795
diff changeset
88 repeat
f56670ce64de util.helpers: Add get_upvalue(function, name) helper
Matthew Wild <mwild1@gmail.com>
parents: 1795
diff changeset
89 i = i + 1;
f56670ce64de util.helpers: Add get_upvalue(function, name) helper
Matthew Wild <mwild1@gmail.com>
parents: 1795
diff changeset
90 name, value = debug.getupvalue(f, i);
f56670ce64de util.helpers: Add get_upvalue(function, name) helper
Matthew Wild <mwild1@gmail.com>
parents: 1795
diff changeset
91 until name == get_name or name == nil;
f56670ce64de util.helpers: Add get_upvalue(function, name) helper
Matthew Wild <mwild1@gmail.com>
parents: 1795
diff changeset
92 return value;
f56670ce64de util.helpers: Add get_upvalue(function, name) helper
Matthew Wild <mwild1@gmail.com>
parents: 1795
diff changeset
93 end
f56670ce64de util.helpers: Add get_upvalue(function, name) helper
Matthew Wild <mwild1@gmail.com>
parents: 1795
diff changeset
94
6777
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
95 return {
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
96 log_host_events = log_host_events;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
97 revert_log_host_events = revert_log_host_events;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
98 log_events = log_events;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
99 revert_log_events = revert_log_events;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
100 show_events = show_events;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
101 get_upvalue = get_upvalue;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
102 };