File

tools/cfgdump.lua @ 11661:735b8f4a6d7e

net.http: Send entire HTTP request header as one write When opportunistic writes are enabled this reduces the number of syscalls and TCP packets sent on the wire. Experiments with TCP Fast Open made this even more obvious. That table trick probably wasn't as efficient. Lua generates bytecode for a table with zero array slots and space for two entries in the hash part, plus code to set [2] and [4]. I didn't verify but I suspect it would have had to resize the table when setting [1] and [3], although probably only once. Concatenating the strings directly in Lua is easier to read and involves no extra table or function call.
author Kim Alvefur <zash@zash.se>
date Thu, 08 Jul 2021 18:21:59 +0200
parent 11570:c3896c714a83
child 13142:879a6a33c21b
line wrap: on
line source

#!/usr/bin/env lua

-- cfgdump.lua prosody.cfg.lua [[host] option]

local s_format, print = string.format, print;
local printf = function(fmt, ...) return print(s_format(fmt, ...)); end
local it = require "util.iterators";
local function sort_anything(a, b)
	local typeof_a, typeof_b = type(a), type(b);
	if typeof_a ~= typeof_b then return typeof_a < typeof_b end
	return a < b -- should work for everything in a config file
end
local serialization = require "util.serialization";
local serialize = serialization.new and serialization.new({
	unquoted = true, table_iterator = function(t) return it.sorted_pairs(t, sort_anything); end,
}) or serialization.serialize;
local configmanager = require"core.configmanager";
local startup = require "util.startup";

startup.set_function_metatable();
local config_filename, onlyhost, onlyoption = ...;

local ok, _, err = configmanager.load(config_filename or "./prosody.cfg.lua", "lua");
assert(ok, err);

if onlyhost then
	if not onlyoption then
		onlyhost, onlyoption = "*", onlyhost;
	end
	if onlyhost ~= "*" then
		local component_module = configmanager.get(onlyhost, "component_module");

		if component_module == "component" then
			printf("Component %q", onlyhost);
		elseif component_module then
			printf("Component %q %q", onlyhost, component_module);
		else
			printf("VirtualHost %q", onlyhost);
		end
	end
	printf("%s = %s", onlyoption or "?", serialize(configmanager.get(onlyhost, onlyoption)));
	return;
end

local config = configmanager.getconfig();


for host, hostcfg in it.sorted_pairs(config) do
	local fixed = {};
	for option, value in it.sorted_pairs(hostcfg) do
		fixed[option] = value;
		if option:match("ports?$") or option:match("interfaces?$") then
			if option:match("s$") then
				if type(value) ~= "table" then
					fixed[option] = { value };
				end
			else
				if type(value) == "table" and #value > 1 then
					fixed[option] = nil;
					fixed[option.."s"] = value;
				end
			end
		end
	end
	config[host] = fixed;
end

local globals = config["*"]; config["*"] = nil;

local function printsection(section)
	local out, n = {}, 1;
	for k,v in it.sorted_pairs(section) do
		out[n], n = s_format("%s = %s", k, serialize(v)), n + 1;
	end
	table.sort(out);
	print(table.concat(out, "\n"));
end

print("-------------- Prosody Exported Configuration File -------------");
print();
print("------------------------ Global section ------------------------");
print();
printsection(globals);
print();

local has_components = nil;

print("------------------------ Virtual hosts -------------------------");

for host, hostcfg in it.sorted_pairs(config) do
	setmetatable(hostcfg, nil);
	hostcfg.defined = nil;

	if hostcfg.component_module == nil then
		print();
		printf("VirtualHost %q", host);
		printsection(hostcfg);
	else
		has_components = true
	end
end

print();

if has_components then
print("------------------------- Components ---------------------------");

	for host, hostcfg in it.sorted_pairs(config) do
		local component_module = hostcfg.component_module;
		hostcfg.component_module = nil;

		if component_module then
			print();
			if component_module == "component" then
				printf("Component %q", host);
			else
				printf("Component %q %q", host, component_module);
				hostcfg.component_module = nil;
				hostcfg.load_global_modules = nil;
			end
			printsection(hostcfg);
		end
	end
end

print()
print("------------------------- End of File --------------------------");