view mod_statistics/mod_statistics.lua @ 5715:8488ebde5739

mod_http_oauth2: Skip consent screen if requested by client and same scopes already granted This follows the intent behind the OpenID Connect 'prompt' parameter when it does not include the 'consent' keyword, that is the client wishes to skip the consent screen. If the user has already granted the exact same scopes to the exact same client in the past, then one can assume that they may grant it again.
author Kim Alvefur <zash@zash.se>
date Tue, 14 Nov 2023 23:03:37 +0100
parents 66bda434d476
children
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module:set_global();

local stats = module:require("mod_statistics/stats");
local filters = require "util.filters";
local serialize = require "util.serialization".serialize;

local cached_values = {};

local sessions = {};

local function push_stat(conn, name, value)
	local value_str = serialize(value);
	return conn:write((("STAT %q (%s)\n"):format(name, value_str):gsub("\\\n", "\\n")));
end

local function push_stat_to_all(name, value)
	for conn in pairs(sessions) do
		push_stat(conn, name, value);
	end
end

local session_stats_tpl = ([[{
	message_in = %d, message_out = %d;
	presence_in = %d, presence_out = %d;
	iq_in = %d, iq_out = %d;
	bytes_in = %d, bytes_out = %d;
}]]):gsub("%s", "");


local jid_fields = {
	c2s = "full_jid";
	s2sin = "from_host";
	s2sout = "to_host";
	component = "host";
};

local function push_session_to_all(session, stats)
	local id = tostring(session):match("[a-f0-9]+$"); -- FIXME: Better id? :/
	local stanzas_in, stanzas_out = stats.stanzas_in, stats.stanzas_out;
	local s = (session_stats_tpl):format(
		stanzas_in.message, stanzas_out.message,
		stanzas_in.presence, stanzas_out.presence,
		stanzas_in.iq, stanzas_out.iq,
		stats.bytes_in, stats.bytes_out);
	local jid = session[jid_fields[session.type]] or "";
	for conn in pairs(sessions) do
		conn:write(("SESS %q %q %s\n"):format(id, jid, s));
	end
end

local available_stats = stats.stats;
local active_sessions = stats.active_sessions;

-- Handle statistics provided by other modules
local function item_handlers(host)
	host = host and (host.."/") or "";

	return function (event) -- Added
		local stats = event.item.statistics;
		local group = host..(stats.name and (stats.name.."::") or "");
		for name, stat in pairs(stats) do
			available_stats[group..name] = stat;
		end
	end, function (event) -- Removed
		local stats = event.item.statistics;
		local group = host..(stats.name and (stats.name.."::") or "");
		for name, stat in pairs(stats) do
			available_stats[group..name] = nil;
		end
	end;
end

module:handle_items("statistics-provider", item_handlers());
function module.add_host(module)
	module:handle_items("statistics-provider", item_handlers(module.host));
end

-- Network listener
local listener = {};

function listener.onconnect(conn)
	sessions[conn] = {};
	push_stat(conn, "version", prosody.version);
	for name, value in pairs(cached_values) do
		push_stat(conn, name, value);
	end
	conn:write("\n"); -- Signal end of first batch (for non-streaming clients)
end

function listener.onincoming(conn, data)
end

function listener.ondisconnect(conn)
	sessions[conn] = nil;
end

function listener.onreadtimeout()
	return true;
end

function module.load()
	if not(prosody and prosody.arg) then
		return;
	end
	filters.add_filter_hook(stats.filter_hook);

	module:add_timer(1, function ()
		for stat_name, stat in pairs(available_stats) do
			if stat.get then
				local cached = cached_values[stat_name];
				local new_value = stat.get();
				if new_value ~= cached then
					push_stat_to_all(stat_name, new_value);
					cached_values[stat_name] = new_value;
				end
			end
		end
		for session, session_stats in pairs(active_sessions) do
			active_sessions[session] = nil;
			push_session_to_all(session, session_stats);
		end
		return 1;
	end);

end
function module.unload()
	filters.remove_filter_hook(stats.filter_hook);
end
function module.command( args )
	local command = args[1];
	if command == "top" then
		local dir = module:get_directory();
		package.path = dir.."/?.lua;"..dir.."/?.lib.lua;"..package.path;
		local prosodytop = module:require "prosodytop";
		prosodytop.run();
	end
end

if prosody and prosody.arg then
	module:provides("net", {
		default_port = 5782;
		listener = listener;
		private = true;
	});
end