prosody-modules
947103177844
mod_server_status/mod_server_status.lua

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mod_server_status/mod_server_status.lua @ 541:947103177844

mod_server_status: renamed mod_xml_status to mod_server_status as the option to output the stats in JSON was added.
author Marco Cirillo <maranda@lightwitch.org>
date Tue, 10 Jan 2012 19:36:28 +0000
parent 532:mod_xml_status/mod_xml_status.lua@967ba17b1d2a
child 542:32d9fd110cb1
comparison
equal deleted inserted replaced
540:31c29832ef3e 541:947103177844
1 -- (C) 2011, Marco Cirillo (LW.Org)
2 -- Display server stats in readable XML or JSON format
3
4 module:set_global()
5
6 local ports = module:get_option_array("server_status_http_ports", {{ port = 5280 }})
7 local show_hosts = module:get_option_array("server_status_show_hosts", nil)
8 local show_comps = module:get_option_array("server_status_show_comps", nil)
9 local json_output = module:get_option_boolean("server_status_json", false)
10
11 local httpserver = require "net.httpserver"
12 local json_encode = require "util.json".encode
13
14 -- code begin
15
16 if not prosody.stanza_counter and not show_hosts and not show_comps then
17 module:log ("error", "mod_server_status requires at least one of the following things:")
18 module:log ("error", "mod_stanza_counter loaded, or either server_status_show_hosts or server_status_show_comps configuration values set.")
19 module:log ("error", "check the module wiki at: http://code.google.com/p/prosody-modules/wiki/mod_server_status")
20 return false
21 end
22
23 local r_err = "\n<html>\n<head>\n<title>Prosody's Server Status - Error %s</title>\n<meta name=\"robots\" content=\"noindex, nofollow\" />\n</head>\n\n<body>\n<h3>%s</h3>\n</body>\n\n</html>\n"
24
25 local response_table = {}
26 response_table.header = '<?xml version="1.0" encoding="UTF-8" ?>'
27 response_table.doc_header = '<document>'
28 response_table.doc_closure = '</document>'
29 response_table.stanzas = {
30 elem_header = ' <stanzas>', elem_closure = ' </stanzas>',
31 incoming = ' <incoming iq="%d" message="%d" presence="%d" />',
32 outgoing = ' <outgoing iq="%d" message="%d" presence="%d" />'
33 }
34 response_table.hosts = {
35 elem_header = ' <hosts>', elem_closure = ' </hosts>',
36 status = ' <status name="%s" current="%s" />'
37 }
38 response_table.comps = {
39 elem_header = ' <components>', elem_closure = ' </components>',
40 status = ' <status name="%s" current="%s" />'
41 }
42
43 local function forge_response_xml()
44 local hosts_s = {}; local components = {}; local stats = {}; local hosts_stats = {}; local comps_stats = {}
45
46 local function t_builder(t,r) for _, bstring in ipairs(t) do r[#r+1] = bstring end end
47
48 if show_hosts then t_builder(show_hosts, hosts_s) end
49 if show_comps then t_builder(show_comps, components) end
50
51 -- build stanza stats if there
52 if prosody.stanza_counter then
53 stats[1] = response_table.stanzas.elem_header
54 stats[2] = response_table.stanzas.incoming:format(prosody.stanza_counter.iq["incoming"],
55 prosody.stanza_counter.message["incoming"],
56 prosody.stanza_counter.presence["incoming"])
57 stats[3] = response_table.stanzas.outgoing:format(prosody.stanza_counter.iq["outgoing"],
58 prosody.stanza_counter.message["outgoing"],
59 prosody.stanza_counter.presence["outgoing"])
60 stats[4] = response_table.stanzas.elem_closure
61 end
62
63 -- build hosts stats if there
64 if hosts_s[1] then
65 hosts_stats[1] = response_table.hosts.elem_header
66 for _, name in ipairs(hosts_s) do
67 hosts_stats[#hosts_stats+1] = response_table.hosts.status:format(
68 name, hosts[name] and "online" or "offline")
69 end
70 hosts_stats[#hosts_stats+1] = response_table.hosts.elem_closure
71 end
72
73 -- build components stats if there
74 if components[1] then
75 comps_stats[1] = response_table.comps.elem_header
76 for _, name in ipairs(components) do
77 comps_stats[#comps_stats+1] = response_table.comps.status:format(
78 name, hosts[name].modules.component and hosts[name].modules.component.connected and "online" or
79 hosts[name] and hosts[name].modules.component == nil and "online" or "offline")
80 end
81 comps_stats[#comps_stats+1] = response_table.comps.elem_closure
82 end
83
84 -- build xml document
85 local result = {}
86 result[#result+1] = response_table.header; result[#result+1] = response_table.doc_header -- start
87 t_builder(stats, result); t_builder(hosts_stats, result); t_builder(comps_stats, result)
88 result[#result+1] = response_table.doc_closure -- end
89
90 return table.concat(result, "\n")
91 end
92
93 local function forge_response_json()
94 local result = {}
95
96 if prosody.stanza_counter then result.stanzas = {} ; result.stanzas = prosody.stanza_counter end
97 if show_hosts then
98 result.hosts = {}
99 for _,n in ipairs(show_hosts) do result.hosts[n] = hosts[name] and "online" or "offline" end
100 end
101 if show_comps then
102 result.comps = {}
103 for _,n in ipairs(show_hosts) do
104 result.comps[n] = hosts[name].modules.component and hosts[name].modules.component.connected and "online" or
105 hosts[name] and hosts[name].modules.component == nil and "online" or "offline"
106 end
107 end
108
109 return json_encode(result)
110 end
111
112 -- http handlers
113
114 local function response(code, r, h)
115 local response = { status = code, body = r }
116
117 if h then response.headers = h end
118 return response
119 end
120
121 local function request(method, body, request)
122 if method == "GET" then
123 if not json_output then return response(200, forge_response_xml()) else return response(200, forge_response_json()) end
124 else
125 local err405 = r_err:format("405", "Only GET is supported")
126 return response(405, err405, {["Allow"] = "GET"})
127 end
128 end
129
130 -- initialization.
131 -- init http interface
132 local function setup()
133 httpserver.new_from_config(ports, request, { base = "server-status" })
134 end
135
136 if prosody.start_time then
137 setup()
138 else
139 module:hook("server-started", setup)
140 end