mod_http: Revamp module for new API and config

plugins/mod_http.lua

@@ -1,6 +1,6 @@
 -- Prosody IM
--- Copyright (C) 2008-2010 Matthew Wild
--- Copyright (C) 2008-2010 Waqas Hussain
+-- Copyright (C) 2008-2012 Matthew Wild
+-- Copyright (C) 2008-2012 Waqas Hussain
 -- 
 -- This project is MIT/X11 licensed. Please see the
 -- COPYING file in the source package for more information.
@@ -8,67 +8,68 @@
 
 module:set_global();
 
---local sessions = module:shared("sessions");
+local parse_url = require "socket.url".parse;
+local server = require "net.http.server";
 
---[[function listener.associate_session(conn, session)
-	sessions[conn] = session;
-end]]
+local function normalize_path(path)
+	if path:sub(1,1) ~= "/" then path = "/"..path; end
+	if path:sub(-1,-1) == "/" then path = path:sub(1, -2); end
+	return path;
+end
 
-local NULL = {};
-local handlers = {};
+local function get_http_event(http_module, app_name, key)
+	local method, path = key:match("^(%S+)%s+(.+)$");
+	if not method and key:sub(1,1) == "/" then
+		method, path = "GET", key;
+	else
+		return nil;
+	end
+	path = normalize_path(path);
+	local app_path = normalize_path(http_module:get_option_string(app_name.."_http_path", "/"..app_name));
+	return method:upper().." "..http_module.host..app_path..path;
+end
 
-function build_handlers(host)
-	if not hosts[host] then return; end
-	local h = {};
-	handlers[host] = h;
-	
-	for mod_name, module in pairs(modulemanager.get_modules(host)) do
-		module = module.module;
-		if module.items then
-			for _, item in ipairs(module.items["http-handler"] or NULL) do
-				local previous = handlers[item.path];
-				if not previous and item.path then
-					h[item.path] = item;
+function module.add_host(module)
+	local apps = {};
+	module.environment.apps = apps;
+	local function http_app_added(event)
+		local app_name = event.item.name;
+		if not app_name then		
+			-- TODO: Link to docs
+			module:log("error", "HTTP app has no 'name', add one or use module:provides('http', app)");
+			return;
+		end
+		apps[app_name] = apps[app_name] or {};
+		local app_handlers = apps[app_name];
+		for key, handler in pairs(event.item.route or {}) do
+			local event_name = get_http_event(module, app_name, key);
+			if event_name then
+				if not app_handlers[event_name] then
+					app_handlers[event_name] = handler;
+					server.add_handler(event_name, handler);
+				else
+					module:log("warn", "App %s added handler twice for '%s', ignoring", app_name, event_name);
 				end
+			else
+				module:log("error", "Invalid route in %s: %q", app_name, key);
 			end
 		end
 	end
-
-	return h;
-end
-function clear_handlers(event)
-	handlers[event.source.host] = nil;
-end
-function get_handler(host, path)
-	local h = handlers[host] or build_handlers(host);
-	if h then
-		local item = h[path];
-		return item and item.handler;
-	end
-end
-module:handle_items("http-handler", clear_handlers, clear_handlers, false);
-
-function http_handler(event)
-	local request, response = event.request, event.response;
-
-	local handler = get_handler(request.headers.host:match("[^:]*"):lower(), request.path:match("[^?]*"));
-	if handler then
-		handler(request, response);
-		return true;
+	
+	local function http_app_removed(event)
+		local app_handlers = apps[event.item.name];
+		apps[event.item.name] = nil;
+		for event, handler in pairs(app_handlers) do
+			server.remove_handler(event, handler);
+		end
 	end
+	
+	module:handle_items("http-provider", http_app_added, http_app_removed);
 end
 
-local server = require "net.http.server";
-local listener = server.listener;
-server.add_handler("*", http_handler);
-function module.unload()
-	server.remove_handler("*", http_handler);
-end
---require "net.http.server".listen_on(8080);
-
 module:add_item("net-provider", {
 	name = "http";
-	listener = listener;
+	listener = server.listener;
 	default_port = 5280;
 	multiplex = {
 		pattern = "^[A-Z]";
@@ -77,7 +78,8 @@ module:add_item("net-provider", {
 
 module:add_item("net-provider", {
 	name = "https";
-	listener = listener;
+	listener = server.listener;
+	default_port = 5281;
 	encryption = "ssl";
 	multiplex = {
 		pattern = "^[A-Z]";