Mercurial > prosody-modules

annotate mod_server_status/mod_server_status.lua @ 652:3e6f43ab7e22

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mod_inotify_reload: Reload modules when their code changes
author Matthew Wild <mwild1@gmail.com>
date Sun, 29 Apr 2012 16:57:21 +0100
parents dfd7f1ed7782
children 74bd7ebe5792
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 -- (C) 2011, Marco Cirillo (LW.Org)
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2 -- Display server stats in readable XML or JSON format
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3
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4 module:depends("http")
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5 module:set_global()
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6
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7 local base_path = module:get_option_array("server_status_basepath", "/server-status/")
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8 local show_hosts = module:get_option_array("server_status_show_hosts", nil)
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9 local show_comps = module:get_option_array("server_status_show_comps", nil)
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10 local json_output = module:get_option_boolean("server_status_json", false)
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11
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12 local json_encode = require "util.json".encode
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13
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14 -- code begin
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15
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16 if not prosody.stanza_counter and not show_hosts and not show_comps then
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17 module:log ("error", "mod_server_status requires at least one of the following things:")
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18 module:log ("error", "mod_stanza_counter loaded, or either server_status_show_hosts or server_status_show_comps configuration values set.")
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19 module:log ("error", "check the module wiki at: http://code.google.com/p/prosody-modules/wiki/mod_server_status")
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20 return false
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21 end
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23 local response_table = {}
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24 response_table.header = '<?xml version="1.0" encoding="UTF-8" ?>'
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25 response_table.doc_header = '<document>'
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26 response_table.doc_closure = '</document>'
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27 response_table.stanzas = {
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28 elem_header = ' <stanzas>', elem_closure = ' </stanzas>',
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29 incoming = ' <incoming iq="%d" message="%d" presence="%d" />',
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30 outgoing = ' <outgoing iq="%d" message="%d" presence="%d" />'
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31 }
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32 response_table.hosts = {
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33 elem_header = ' <hosts>', elem_closure = ' </hosts>',
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34 status = ' <status name="%s" current="%s" />'
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35 }
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36 response_table.comps = {
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37 elem_header = ' <components>', elem_closure = ' </components>',
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38 status = ' <status name="%s" current="%s" />'
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39 }
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40
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41 local function forge_response_xml()
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42 local hosts_s = {}; local components = {}; local stats = {}; local hosts_stats = {}; local comps_stats = {}
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43
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44 local function t_builder(t,r) for _, bstring in ipairs(t) do r[#r+1] = bstring end end
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45
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46 if show_hosts then t_builder(show_hosts, hosts_s) end
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47 if show_comps then t_builder(show_comps, components) end
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49 -- build stanza stats if there
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50 if prosody.stanza_counter then
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51 stats[1] = response_table.stanzas.elem_header
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52 stats[2] = response_table.stanzas.incoming:format(prosody.stanza_counter.iq["incoming"],
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53 prosody.stanza_counter.message["incoming"],
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54 prosody.stanza_counter.presence["incoming"])
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55 stats[3] = response_table.stanzas.outgoing:format(prosody.stanza_counter.iq["outgoing"],
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56 prosody.stanza_counter.message["outgoing"],
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57 prosody.stanza_counter.presence["outgoing"])
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58 stats[4] = response_table.stanzas.elem_closure
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59 end
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60
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61 -- build hosts stats if there
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62 if hosts_s[1] then
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63 hosts_stats[1] = response_table.hosts.elem_header
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64 for _, name in ipairs(hosts_s) do
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65 hosts_stats[#hosts_stats+1] = response_table.hosts.status:format(
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66 name, hosts[name] and "online" or "offline")
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67 end
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68 hosts_stats[#hosts_stats+1] = response_table.hosts.elem_closure
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69 end
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70
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71 -- build components stats if there
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72 if components[1] then
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73 comps_stats[1] = response_table.comps.elem_header
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74 for _, name in ipairs(components) do
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75 comps_stats[#comps_stats+1] = response_table.comps.status:format(
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76 name, hosts[name] and hosts[name].modules.component and hosts[name].modules.component.connected and "online" or
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77 hosts[name] and hosts[name].modules.component == nil and "online" or "offline")
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78 end
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79 comps_stats[#comps_stats+1] = response_table.comps.elem_closure
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80 end
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81
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82 -- build xml document
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83 local result = {}
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84 result[#result+1] = response_table.header; result[#result+1] = response_table.doc_header -- start
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85 t_builder(stats, result); t_builder(hosts_stats, result); t_builder(comps_stats, result)
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86 result[#result+1] = response_table.doc_closure -- end
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87
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88 return table.concat(result, "\n")
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89 end
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90
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91 local function forge_response_json()
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92 local result = {}
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93
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94 if prosody.stanza_counter then result.stanzas = {} ; result.stanzas = prosody.stanza_counter end
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95 if show_hosts then
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96 result.hosts = {}
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97 for _,n in ipairs(show_hosts) do result.hosts[n] = hosts[n] and "online" or "offline" end
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98 end
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99 if show_comps then
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100 result.components = {}
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101 for _,n in ipairs(show_comps) do
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102 result.components[n] = hosts[n] and hosts[n].modules.component and hosts[n].modules.component.connected and "online" or
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103 hosts[n] and hosts[n].modules.component == nil and "online" or "offline"
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104 end
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105 end
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107 return json_encode(result)
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108 end
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109
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110 -- http handlers
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111
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112 local function request(event)
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113 local response = event.response
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114 if not json_output then
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115 response.headers.content_type = "application/json"
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116 response:send(forge_response_xml())
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117 else
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118 response.headers.content_type = "text/xml"
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119 response:send(forge_response_json())
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120 end
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121 end
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122
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123 -- initialization.
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124
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125 module:provides("http", {
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126 default_path = base_path,
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127 route = {
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128 ["GET /"] = request
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129 }
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130 })
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131