Mercurial > prosody-modules
view mod_statistics/prosodytop.lib.lua @ 4542:fb4a50bf60f1
mod_prometheus: Invoke stats collection if in 'manual' mode
Since 10d13e0554f9 a special value for statistics_interval "manual"
exists, where a module is expected to invoke processing in connection to
collection of stats. This makes internal collection and exporting to
Prometheus happens at the same time with no chance of timers getting out
of sync.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Tue, 13 Apr 2021 23:53:53 +0200 |
parents | 1962c94e2203 |
children |
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local curses = require "curses"; local server = require "net.server_select"; local timer = require "util.timer"; local envload = require "util.envload".envload; assert(curses.timeout, "Incorrect version of curses library. Try 'sudo luarocks install luaposix'"); local top = module:require "top"; function main() local stdscr = curses.stdscr() -- it's a userdatum --stdscr:clear(); local view = top.new({ stdscr = stdscr; prosody = { up_since = os.time() }; conn_list = {}; }); timer.add_task(0.01, function () local ch = stdscr:getch(); if ch then if stdscr:getch() == 410 then view:resized(); else curses.ungetch(ch); end end return 0.2; end); timer.add_task(0, function () view:draw(); return 1; end); --[[ posix.signal(28, function () table.insert(view.conn_list, { jid = "WINCH" }); --view:draw(); end); ]] -- Fake socket object around stdin local stdin = { getfd = function () return 0; end; dirty = function (self) return false; end; settimeout = function () end; send = function (_, d) return #d, 0; end; close = function () end; receive = function (_, patt) local ch = stdscr:getch(); if ch >= 0 and ch <=255 then return string.char(ch); elseif ch == 410 then view:resized(); else table.insert(view.conn_list, { jid = tostring(ch) }); --FIXME end return ""; end }; local function on_incoming(stdin, text) -- TODO: Handle keypresses if text:lower() == "q" then os.exit(); end end stdin = server.wrapclient(stdin, "stdin", 0, { onincoming = on_incoming, ondisconnect = function () end }, "*a"); local function handle_line(line) local e = { STAT = function (name) return function (value) view:update_stat(name, value); end end; SESS = function (id) return function (jid) return function (stats) view:update_session(id, jid, stats); end end end; }; local chunk = assert(envload(line, "=prosodytop", e)); chunk(); end local stats_listener = {}; function stats_listener.onconnect(conn) --stdscr:mvaddstr(6, 0, "CONNECTED"); end local partial = ""; function stats_listener.onincoming(conn, data) --print("DATA", data) data = partial..data; local lastpos = 1; for line, pos in data:gmatch("([^\n]+)\n()") do lastpos = pos; handle_line(line); end partial = data:sub(lastpos); end function stats_listener.ondisconnect(conn, err) stdscr:mvaddstr(6, 0, "DISCONNECTED: "..(err or "unknown")); end local conn = require "socket".tcp(); assert(conn:connect("localhost", 5782)); handler = server.wrapclient(conn, "localhost", 5782, stats_listener, "*a"); end return { run = function () --os.setlocale("UTF-8", "all") curses.initscr() curses.cbreak() curses.echo(false) -- not noecho ! curses.nl(false) -- not nonl ! curses.timeout(0); local ok, err = pcall(main); --while true do stdscr:getch() end --stdscr:endwin() if ok then ok, err = xpcall(server.loop, debug.traceback); end curses.endwin(); --stdscr:refresh(); if not ok then print(err); end print"DONE" end; };