Trim logs sent to loggly (#15503)

* try making missing x-client header errors smaller

* add server emoji as tag

* always truncate headers

website/server/libs/logger.js

@@ -24,6 +24,22 @@ const _config = {
 
 export { _config as _loggerConfig }; // exported for use during tests
 
+const slimLogs = winston.format(info => {
+  if (info && info.message && info.message.indexOf('BadRequest: Missing x-client headers') === 0) {
+    info.body = undefined;
+    info.message = 'BadRequest: Missing x-client headers';
+  }
+  if (info && info.message && info.message.indexOf('TooManyRequests') === 0) {
+    info.message = 'TooManyRequests';
+  }
+  info.headers = {
+    'x-api-user': info.headers['x-api-user'] || 'unknown',
+    'x-client': info.headers['x-client'] || 'unknown',
+    'user-agent': info.headers['user-agent'] || 'unknown',
+  };
+  return info;
+});
+
 if (IS_PROD) {
   if (ENABLE_CONSOLE_LOGS_IN_PROD) {
     logger
@@ -44,11 +60,20 @@ if (IS_PROD) {
   }
 
   if (LOGGLY_TOKEN && LOGGLY_SUBDOMAIN) {
+    const tags = ['Winston-NodeJS'];
+    if (nconf.get('SERVER_EMOJI')) {
+      tags.push(nconf.get('SERVER_EMOJI'));
+    }
     logger.add(new Loggly({
       inputToken: LOGGLY_TOKEN,
       subdomain: LOGGLY_SUBDOMAIN,
-      tags: ['Winston-NodeJS'],
+      tags,
       json: true,
+      format: winston.format.combine(
+        slimLogs(),
+        winston.format.timestamp(),
+        winston.format.json(),
+      ),
     }));
   }
 // Do not log anything when testing unless specified