prosody-modules
347e34c3c7e2
mod_discodot/mod_discodot.lua

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mod_discodot/mod_discodot.lua @ 4918:347e34c3c7e2

mod_rest: Improve error handling during format mapping Prevents e.g. a nil, error return going directly into e.g. json encoding, resulting in "null" being returned. Further handling improvements down the line is needed.
author Kim Alvefur <zash@zash.se>
date Thu, 07 Apr 2022 17:49:08 +0200
parent 4577:253df0798996
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
4577
253df0798996 mod_discodot: Print a graph of service discovery
Kim Alvefur <zash@zash.se>
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1 local cm = require("core.configmanager");
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2
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3 local function format_host(host, conf)
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4 if host == "*" then
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Kim Alvefur <zash@zash.se>
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5 return "Global"
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6 end
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Kim Alvefur <zash@zash.se>
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7 local component_module = conf["component_module"];
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8 if type(component_module) == "string" then
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Kim Alvefur <zash@zash.se>
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9 if component_module == "component" then
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10 return string.format("Component %q", host)
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11 else
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12 return string.format("Component %q %q", host, component_module)
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13 end
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14 else
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15 return string.format("VirtualHost %q", host)
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16 end
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17 end
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18
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19 function module.command(arg)
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20
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21 local config = cm.getconfig();
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22
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23 print("digraph \"prosody\" {")
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24 for host, conf in pairs(config) do
253df0798996 mod_discodot: Print a graph of service discovery
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25 print(string.format("%q [label=%q]", host, format_host(host, conf)));
253df0798996 mod_discodot: Print a graph of service discovery
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26 local parent = host:match("%.(.*)");
253df0798996 mod_discodot: Print a graph of service discovery
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27 if parent and rawget(config, parent) then
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28 print(string.format("%q -> %q", parent, host));
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29 end
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Kim Alvefur <zash@zash.se>
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30 local disco_items = conf["disco_items"]
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31 if type(disco_items) == "table" then
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Kim Alvefur <zash@zash.se>
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32 for _, pair in ipairs(disco_items) do
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33 print(string.format("%q -> %q", host, pair[1]));
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34 end
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35 end
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36
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37 end
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38
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39 print("}")
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40
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41 return 0
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42 end