log4j in createServer and configuration file

backend/log4js-config.json

@@ -0,0 +1,64 @@
+{
+	"appenders": 
+	{
+		"access": 
+		{
+			"type": "dateFile",
+			"filename": "../logs/backend/access.log",
+			"pattern": "%d %p %c %f:%l %m%n",
+			"compress" : true,
+			"keepFileExt" : true,
+			"fileNameSep" : "_" 
+		},
+		"apollo": 
+		{
+			"type": "dateFile",
+			"filename": "../logs/backend/apollo.log",
+			"pattern": "%d %p %c %f:%l %m%n",
+			"compress" : true,
+			"keepFileExt" : true,
+			"fileNameSep" : "_" 
+		},
+		"errorFile": 
+		{
+			"type": "dateFile",
+			"filename": "../logs/backend/errors.log",
+			"pattern": "%d %p %c %f:%l %m%n",
+			"compress" : true,
+			"keepFileExt" : true,
+			"fileNameSep" : "_" 
+		},
+		"errors": 
+		{
+			"type": "logLevelFilter",
+			"level": "error",
+			"appender": "errorFile"
+		},
+		"out": 
+		{
+			"type": "stdout"
+		}
+	},
+	"categories": 
+	{
+		"default": 
+		{
+			"appenders": 
+			[
+				"out",
+				"apollo",
+				"errors"
+			],
+			"level": "all",
+			"enableCallStack": true
+		},
+		"http": 
+		{
+			"appenders": 
+			[
+				"access"
+			],
+			"level": "info"
+		}
+	}
+}

backend/src/server/createServer.ts

@@ -29,8 +29,15 @@ import { Connection } from '@dbTools/typeorm'
 
 type ServerDef = { apollo: ApolloServer; app: Express; con: Connection }
 
-const logger = log4js.getLogger()
-logger.level = 'debug'
+log4js.configure(CONFIG.LOG4JS_CONFIG)
+
+const logger = log4js.getLogger('backend')
+logger.debug('This little thing went to market')
+logger.info('This little thing stayed at home')
+logger.error('This little thing had roast beef')
+logger.fatal('This little thing had none')
+logger.trace('and this little thing went wee, wee, wee, all the way home.')
+
 
 // eslint-disable-next-line @typescript-eslint/no-explicit-any
 const createServer = async (context: any = serverContext): Promise<ServerDef> => {