annotate mod_prometheus/mod_prometheus.lua @ 3134:99ac6dda9878

mod_prometheus: Move timestamp generation to the stats-update event.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Fri, 22 Jun 2018 01:03:47 +0200
parents 321fd53a3191
children 9817e45a79e6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
3132
4ef28b6b4e87 mod_prometheus: Add my copyright.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3131
diff changeset
1 -- Log statistics to Prometheus
3125
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
2 --
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
3 -- Copyright (C) 2014 Daurnimator
3132
4ef28b6b4e87 mod_prometheus: Add my copyright.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3131
diff changeset
4 -- Copyright (C) 2018 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
3125
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
5 --
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
6 -- This module is MIT/X11 licensed.
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
7
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
8 module:set_global();
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
9 module:depends "http";
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
10
3128
a34e7bd87b39 mod_prometheus: Optimise global lookups.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3127
diff changeset
11 local tostring = tostring;
3125
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
12 local t_insert = table.insert;
3128
a34e7bd87b39 mod_prometheus: Optimise global lookups.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3127
diff changeset
13 local t_concat = table.concat;
3125
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
14 local socket = require "socket";
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
15
3131
ddd39ca7b953 mod_prometheus: Change the storage model for one which matches Prometheus better.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3128
diff changeset
16 local data = {};
3125
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
17
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
18 local function escape(text)
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
19 return text:gsub("\\", "\\\\"):gsub("\"", "\\\""):gsub("\n", "\\n");
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
20 end
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
21
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
22 local function escape_name(name)
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
23 return name:gsub("[^A-Za-z0-9_]", "_"):gsub("^[^A-Za-z_]", "_%1");
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
24 end
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
25
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
26 local function get_timestamp()
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
27 -- Using LuaSocket for that because os.time() only has second precision.
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
28 return math.floor(socket.gettime() * 1000);
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
29 end
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
30
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
31 local function repr_help(metric, docstring)
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
32 docstring = docstring:gsub("\\", "\\\\"):gsub("\n", "\\n");
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
33 return "# HELP "..escape_name(metric).." "..docstring.."\n";
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
34 end
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
35
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
36 -- local allowed_types = { counter = true, gauge = true, histogram = true, summary = true, untyped = true };
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
37 -- local allowed_types = { "counter", "gauge", "histogram", "summary", "untyped" };
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
38 local function repr_type(metric, type_)
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
39 -- if not allowed_types:contains(type_) then
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
40 -- return;
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
41 -- end
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
42 return "# TYPE "..escape_name(metric).." "..type_.."\n";
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
43 end
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
44
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
45 local function repr_label(key, value)
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
46 return key.."=\""..escape(value).."\"";
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
47 end
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
48
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
49 local function repr_labels(labels)
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
50 local values = {}
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
51 for key, value in pairs(labels) do
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
52 t_insert(values, repr_label(escape_name(key), escape(value)));
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
53 end
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
54 if #values == 0 then
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
55 return "";
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
56 end
3128
a34e7bd87b39 mod_prometheus: Optimise global lookups.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3127
diff changeset
57 return "{"..t_concat(values, ", ").."}";
3125
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
58 end
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
59
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
60 local function repr_sample(metric, labels, value, timestamp)
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
61 return escape_name(metric)..repr_labels(labels).." "..value.." "..timestamp.."\n";
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
62 end
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
63
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
64 module:hook("stats-updated", function (event)
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
65 local all_stats, this = event.stats_extra;
3134
99ac6dda9878 mod_prometheus: Move timestamp generation to the stats-update event.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3133
diff changeset
66 local timestamp = tostring(get_timestamp());
3131
ddd39ca7b953 mod_prometheus: Change the storage model for one which matches Prometheus better.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3128
diff changeset
67 local host, sect, name, typ;
ddd39ca7b953 mod_prometheus: Change the storage model for one which matches Prometheus better.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3128
diff changeset
68 data = {};
ddd39ca7b953 mod_prometheus: Change the storage model for one which matches Prometheus better.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3128
diff changeset
69 for stat, value in pairs(event.stats) do
3125
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
70 this = all_stats[stat];
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
71 -- module:log("debug", "changed_stats[%q] = %s", stat, tostring(value));
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
72 host, sect, name, typ = stat:match("^/([^/]+)/([^/]+)/(.+):(%a+)$");
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
73 if host == nil then
3131
ddd39ca7b953 mod_prometheus: Change the storage model for one which matches Prometheus better.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3128
diff changeset
74 sect, name, typ = stat:match("^([^.]+)%.(.+):(%a+)$");
3125
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
75 elseif host == "*" then
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
76 host = nil;
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
77 end
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
78 if sect:find("^mod_measure_.") then
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
79 sect = sect:sub(13);
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
80 elseif sect:find("^mod_statistics_.") then
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
81 sect = sect:sub(16);
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
82 end
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
83
3133
321fd53a3191 mod_prometheus: Put the name as a label, which fits better the usual Prosody model.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3132
diff changeset
84 local key = escape_name("prosody_"..sect);
3131
ddd39ca7b953 mod_prometheus: Change the storage model for one which matches Prometheus better.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3128
diff changeset
85 local field = {
ddd39ca7b953 mod_prometheus: Change the storage model for one which matches Prometheus better.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3128
diff changeset
86 value = value,
3133
321fd53a3191 mod_prometheus: Put the name as a label, which fits better the usual Prosody model.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3132
diff changeset
87 labels = { ["type"] = name},
3131
ddd39ca7b953 mod_prometheus: Change the storage model for one which matches Prometheus better.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3128
diff changeset
88 -- TODO: Use the other types where it makes sense.
ddd39ca7b953 mod_prometheus: Change the storage model for one which matches Prometheus better.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3128
diff changeset
89 typ = (typ == "rate" and "counter" or "gauge"),
3134
99ac6dda9878 mod_prometheus: Move timestamp generation to the stats-update event.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3133
diff changeset
90 timestamp = timestamp,
3131
ddd39ca7b953 mod_prometheus: Change the storage model for one which matches Prometheus better.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3128
diff changeset
91 };
ddd39ca7b953 mod_prometheus: Change the storage model for one which matches Prometheus better.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3128
diff changeset
92 if host then
ddd39ca7b953 mod_prometheus: Change the storage model for one which matches Prometheus better.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3128
diff changeset
93 field.labels.host = host;
3125
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
94 end
3131
ddd39ca7b953 mod_prometheus: Change the storage model for one which matches Prometheus better.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3128
diff changeset
95 if data[key] == nil then
ddd39ca7b953 mod_prometheus: Change the storage model for one which matches Prometheus better.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3128
diff changeset
96 data[key] = {};
ddd39ca7b953 mod_prometheus: Change the storage model for one which matches Prometheus better.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3128
diff changeset
97 end
ddd39ca7b953 mod_prometheus: Change the storage model for one which matches Prometheus better.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3128
diff changeset
98 t_insert(data[key], field);
3125
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
99 end
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
100 end);
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
101
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
102 local function get_metrics(event)
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
103 local response = event.response;
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
104 response.headers.content_type = "text/plain; version=0.4.4";
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
105
3127
36770ae1148f mod_prometheus: Don’t shadow variables. [luacheck]
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3126
diff changeset
106 local answer = {};
3131
ddd39ca7b953 mod_prometheus: Change the storage model for one which matches Prometheus better.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3128
diff changeset
107 for key, fields in pairs(data) do
ddd39ca7b953 mod_prometheus: Change the storage model for one which matches Prometheus better.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3128
diff changeset
108 t_insert(answer, repr_help(key, "TODO: add a description here."));
ddd39ca7b953 mod_prometheus: Change the storage model for one which matches Prometheus better.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3128
diff changeset
109 t_insert(answer, repr_type(key, fields[1].typ));
ddd39ca7b953 mod_prometheus: Change the storage model for one which matches Prometheus better.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3128
diff changeset
110 for _, field in pairs(fields) do
3134
99ac6dda9878 mod_prometheus: Move timestamp generation to the stats-update event.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3133
diff changeset
111 t_insert(answer, repr_sample(key, field.labels, field.value, field.timestamp));
3125
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
112 end
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
113 end
3128
a34e7bd87b39 mod_prometheus: Optimise global lookups.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 3127
diff changeset
114 return t_concat(answer, "");
3125
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
115 end
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
116
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
117 function module.add_host(module)
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
118 module:provides("http", {
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
119 default_path = "metrics";
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
120 route = {
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
121 GET = get_metrics;
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
122 };
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
123 });
07a2ba55de4d mod_prometheus: Add a new statistics export module, for Prometheus.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
124 end