Update file_cache.lua (#6507)

* Update file_cache.lua

Updated file_cache.lua to use default settings for compatibility with the removal of config.lua/local.lua. Also refactored some code for readability/nesting

* reload remote server list on cache clear

app/scripts/resources/scripts/app/servers/resources/file_cache.lua

@@ -1,6 +1,7 @@
 --description
-	--monitor custom memcache event and clear memcache on remote servers
+	--monitor custom cache event and clear cache on remote servers
 	--protect xmlrpc using a firewall on the server to limit access by ip address
+	--further protect it by configuring ssl for xmlrpc on the remote server
 
 --dependencies
 	--install mod_curl freeswitch module
@@ -9,33 +10,29 @@
 		--open port xmlrpc port for other master server IP addresses
 		--change the password for xmlrpc in system -> settings
 	--conf/autoload_configs/lua.conf.xml
-		-- <param name="startup-script" value="app/server/resources/memcache.lua"/>
+		-- <param name="startup-script" value="app/server/resources/file_cache.lua"/>
 	--iptables
 		-- /sbin/iptables -I INPUT -j ACCEPT -p tcp --dport 8080 -s x.x.x.x/32
 		-- ubuntu: service iptables-persistent save
 
 --define the servers running freeswitch do not include local
 	--[[
-  	#put this in local.lua
+  	#put this in default settings once for each server. Order doesn't matter.
-  	servers = {}
+		Category: cache
-  	x = 0;
+		Subcategory: remote_servers
-  	servers[x] = {}
+		Type: array
-  	servers[x]['method'] = "curl";
+		value: http://user:password@server_ip:8080
-  	servers[x]['username'] = "freeswitch";
-  	servers[x]['password'] = "freeswitch";
-  	servers[x]['hostname'] = "x.x.x.x";
-  	servers[x]['port'] = "8080";
-  	x = x + 1;
-  	servers[x] = {}
-  	servers[x]['method'] = "curl";
-  	servers[x]['username'] = "freeswitch";
-  	servers[x]['password'] = "freeswitch";
-  	servers[x]['hostname'] = "x.x.x.x";
-  	servers[x]['port'] = "8080";
 	]]
 
 --includes config.lua which will include local.lua if it exists
 	require "resources.functions.config"
+	local Database = require "resources.functions.database";
+	local Settings = require "resources.functions.lazy_settings";
+
+	local db = dbh or Database.new('system');
+	local settings = Settings.new(db, domain_name, domain_uuid)
+
+	local server_list = settings:get('cache', 'remote_servers', 'array')
 
 --subscribe to the events
 	--events = freeswitch.EventConsumer("all");
@@ -46,6 +43,7 @@
 		return (string.gsub(s, "^%s*(.-)%s*$", "%1"))
 	end
 
+
 --prepare the api object
 	api = freeswitch.API();
 
@@ -61,31 +59,47 @@
 			api_command = trim(api_command);
 			freeswitch.consoleLog("NOTICE","api_command: "..api_command .. "\n");
 		end
-			if (api_command == "cache") then
+
+
+	--check if cache clear command
+		if (api_command ~= "cache") then
+			goto continue
+		end
+
 		cache_updated = false;
 		local api_command_argument = event:getHeader("API-Command-Argument");
 		if (api_command_argument ~= nil) then
 			api_command_argument = trim(api_command_argument);
 		end
-				if (api_command_argument ~= nil) then
+		if (api_command_argument == nil) then
+			goto continue
+		end
 		if (api_command_argument == "flush") then
 			cache_updated = true
 		end
 		if (string.sub(api_command_argument, 0, 6) == "delete") then
 			cache_updated = true
 		end
-					if (cache_updated) then
+		if (not cache_updated) then
-						for key,row in pairs(servers) do
+			goto continue
-							if (row.method == "curl") then
+		end
+	
+	--update the server_list
+		server_list = settings:get('cache', 'remote_servers', 'array')
+
+	--check that there is work to do
+		if (server_list == nil) then
+			freeswitch.consoleLog("NOTICE","file_cache.lua: Script loaded but no servers configured\n");
+			goto continue
+		end
+
+	--send the API commands
+		for _, server in ipairs(server_list) do
 			api_command_argument = api_command_argument:gsub(" ", "%%20");
-								url = [[http://]]..row.username..[[:]]..row.password..[[@]]..row.hostname..[[:]]..row.port..[[/webapi/luarun?app/servers/resources/clear_cache.lua%20]]..api_command_argument;
+			url = server..[[/webapi/luarun?app/servers/resources/clear_cache.lua%20]]..api_command_argument;
 			api = freeswitch.API();
 			get_response = api:execute("curl", url);
 			freeswitch.consoleLog("INFO", "[notice] curl ".. url .. " \n");
 		end
-						end
+		::continue::
-					end
-
-				end
-			end
 	end