1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
--
-- sfive
--
-- sfive - spreadspace streaming statistics suite is a generic
-- statistic collection tool for streaming server infrastuctures.
-- The system collects and stores meta data like number of views
-- and throughput from a number of streaming servers and stores
-- it in a global data store.
-- The data acquisition is designed to be generic and extensible in
-- order to support different streaming software.
-- sfive also contains tools and applications to filter and visualize
-- live and recorded data.
--
--
-- Copyright (C) 2014 Christian Pointner <equinox@spreadspace.org>
-- Markus Grueneis <gimpf@gimpf.org>
--
-- This file is part of sfive.
--
-- sfive is free software: you can redistribute it and/or modify
-- it under the terms of the GNU General Public License version 3
-- as published by the Free Software Foundation.
--
-- sfive is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with sfive. If not, see <http://www.gnu.org/licenses/>.
--
--
-- Install this by adding the following to your nginx.conf
--
-- location /sfive {
-- allow localhost;
-- deny all;
--
-- lua_check_client_abort on;
-- content_by_lua_file '/path/to/s5-nginx-fetch.lua';
-- }
--
local sfive = ngx.shared.sfive
local function fetch_cleanup()
ngx.log(ngx.INFO, "SFive(fetch): cleanup fetch")
sfive:delete("fetch:connected")
end
local ok, err, force = sfive:add("fetch:connected", 1)
-- TODO: race condition: when client disconnects here we won't free up the singleton...
if not ok then
if err == "exists" then
ngx.exit(ngx.HTTP_SERVICE_UNAVAILABLE)
else
ngx.log(ngx.ERR, "SFive(fetch): failed to set connected flag: " .. err)
ngx.exit(ngx.HTTP_INTERNAL_SERVER_ERROR)
end
else
local ok, err = ngx.on_abort(fetch_cleanup)
if not ok then
ngx.log(ngx.ERR, "SFive(fetch): failed to register the on_abort callback: ", err)
ngx.exit(ngx.HTTP_INTERNAL_SERVER_ERROR)
end
ngx.log(ngx.INFO, "SFive(fetch): client connected")
local sfive_log = ngx.shared.sfive_log
while true do
logs = sfive_log:get_keys()
for i, k in ipairs(logs) do
local ok, err = ngx.say(sfive_log:get(k))
if not ok then
ngx.log(ngx.ERR, "SFive(fetch): failed to register the on_abort callback: ", err)
break
end
sfive_log:delete(k)
end
ngx.flush()
ngx.sleep(0.1)
end
fetch_cleenup()
end
|
