module("prosodytop", package.seeall);
local array = require "util.array";
local it = require "util.iterators";
local curses = require "curses";
local stats = require "stats".stats;
local time = require "socket".gettime;
local sessions_idle_after = 60;
local stanza_names = {"message", "presence", "iq"};
local top = {};
top.__index = top;
local status_lines = {
"Prosody $version - $time up $up_since, $total_users users, $cpu busy";
"Connections: $total_c2s c2s, $total_s2sout s2sout, $total_s2sin s2sin, $total_component component";
"Memory: $memory_lua lua, $memory_allocated process ($memory_used in use)";
"Stanzas in: $message_in_per_second message/s, $presence_in_per_second presence/s, $iq_in_per_second iq/s";
"Stanzas out: $message_out_per_second message/s, $presence_out_per_second presence/s, $iq_out_per_second iq/s";
};
function top:draw()
self:draw_status();
self:draw_column_titles();
self:draw_conn_list();
self.statuswin:refresh();
self.listwin:refresh();
--self.infowin:refresh()
self.stdscr:move(#status_lines,0)
end
-- Width specified as cols or % of unused space, defaults to
-- title width if not specified
local conn_list_columns = {
{ title = "ID", key = "id", width = "8" };
{ title = "JID", key = "jid", width = "100%" };
{ title = "STANZAS IN>", key = "total_stanzas_in", align = "right" };
{ title = "MSG", key = "message_in", align = "right", width = "4" };
{ title = "PRES", key = "presence_in", align = "right", width = "4" };
{ title = "IQ", key = "iq_in", align = "right", width = "4" };
{ title = "STANZAS OUT>", key = "total_stanzas_out", align = "right" };
{ title = "MSG", key = "message_out", align = "right", width = "4" };
{ title = "PRES", key = "presence_out", align = "right", width = "4" };
{ title = "IQ", key = "iq_out", align = "right", width = "4" };
{ title = "BYTES IN", key = "bytes_in", align = "right" };
{ title = "BYTES OUT", key = "bytes_out", align = "right" };
};
function top:draw_status()
for row, line in ipairs(status_lines) do
self.statuswin:mvaddstr(row-1, 0, (line:gsub("%$([%w_]+)", self.data)));
self.statuswin:clrtoeol();
end
-- Clear stanza counts
for _, stanza_type in ipairs(stanza_names) do
self.prosody[stanza_type.."_in_per_second"] = 0;
self.prosody[stanza_type.."_out_per_second"] = 0;
end
end
local function padright(s, width)
return s..string.rep(" ", width-#s);
end
local function padleft(s, width)
return string.rep(" ", width-#s)..s;
end
function top:resized()
self:recalc_column_widths();
--self.stdscr:clear();
self:draw();
end
function top:recalc_column_widths()
local widths = {};
self.column_widths = widths;
local total_width = curses.cols()-4;
local free_width = total_width;
for i = 1, #conn_list_columns do
local width = conn_list_columns[i].width or "0";
if not(type(width) == "string" and width:sub(-1) == "%") then
width = math.max(tonumber(width), #conn_list_columns[i].title+1);
widths[i] = width;
free_width = free_width - width;
end
end
for i = 1, #conn_list_columns do
if not widths[i] then
local pc_width = tonumber((conn_list_columns[i].width:gsub("%%$", "")));
widths[i] = math.floor(free_width*(pc_width/100));
end
end
return widths;
end
function top:draw_column_titles()
local widths = self.column_widths;
self.listwin:attron(curses.A_REVERSE);
self.listwin:mvaddstr(0, 0, " ");
for i, column in ipairs(conn_list_columns) do
self.listwin:addstr(padright(column.title, widths[i]));
end
self.listwin:addstr(" ");
self.listwin:attroff(curses.A_REVERSE);
end
local function session_compare(session1, session2)
local stats1, stats2 = session1.stats, session2.stats;
return (stats1.total_stanzas_in + stats1.total_stanzas_out) >
(stats2.total_stanzas_in + stats2.total_stanzas_out);
end
function top:draw_conn_list()
local rows = curses.lines()-(#status_lines+2)-5;
local cutoff_time = time() - sessions_idle_after;
local widths = self.column_widths;
local top_sessions = array.collect(it.values(self.active_sessions)):sort(session_compare);
for index = 1, rows do
session = top_sessions[index];
if session then
if session.last_update < cutoff_time then
self.active_sessions[session.id] = nil;
else
local row = {};
for i, column in ipairs(conn_list_columns) do
local width = widths[i];
local v = tostring(session[column.key] or ""):sub(1, width);
if #v < width then
if column.align == "right" then
v = padleft(v, width-1).." ";
else
v = padright(v, width);
end
end
table.insert(row, v);
end
if session.updated then
self.listwin:attron(curses.A_BOLD);
end
self.listwin:mvaddstr(index, 0, " "..table.concat(row));
if session.updated then
session.updated = false;
self.listwin:attroff(curses.A_BOLD);
end
end
else
-- FIXME: How to clear a line? It's 5am and I don't feel like reading docs.
self.listwin:move(index, 0);
self.listwin:clrtoeol();
end
end
end
function top:update_stat(name, value)
self.prosody[name] = value;
end
function top:update_session(id, jid, stats)
self.active_sessions[id] = stats;
stats.id, stats.jid, stats.stats = id, jid, stats;
stats.total_bytes = stats.bytes_in + stats.bytes_out;
for _, stanza_type in ipairs(stanza_names) do
self.prosody[stanza_type.."_in_per_second"] = (self.prosody[stanza_type.."_in_per_second"] or 0) + stats[stanza_type.."_in"];
self.prosody[stanza_type.."_out_per_second"] = (self.prosody[stanza_type.."_out_per_second"] or 0) + stats[stanza_type.."_out"];
end
stats.total_stanzas_in = stats.message_in + stats.presence_in + stats.iq_in;
stats.total_stanzas_out = stats.message_out + stats.presence_out + stats.iq_out;
stats.last_update = time();
stats.updated = true;
end
function new(base)
setmetatable(base, top);
base.data = setmetatable({}, {
__index = function (t, k)
local stat = stats[k];
if stat and stat.tostring then
if type(stat.tostring) == "function" then
return stat.tostring(base.prosody[k]);
elseif type(stat.tostring) == "string" then
local v = base.prosody[k];
if v == nil then
return "?";
end
return (stat.tostring):format(v);
end
end
return base.prosody[k];
end;
});
base.active_sessions = {};
base.statuswin = curses.newwin(#status_lines, 0, 0, 0);
base.promptwin = curses.newwin(1, 0, #status_lines, 0);
base.promptwin:addstr("");
base.promptwin:refresh();
base.listwin = curses.newwin(curses.lines()-(#status_lines+2)-5, 0, #status_lines+1, 0);
base.listwin:syncok();
base.infowin = curses.newwin(5, 0, curses.lines()-5, 0);
base.infowin:mvaddstr(1, 1, "Hello world");
base.infowin:border(0,0,0,0);
base.infowin:syncok();
base.infowin:refresh();
base:resized();
return base;
end
return _M;