log data only for valid worker ids

Author: rahulnwn

lib/server.js

@@ -137,18 +137,20 @@ exports.Server = function Server(bsClient, workers) {
     "_progress": function progressHandler(uri, body, request, response) {
       var uuid = request.headers['x-worker-uuid'];
       var worker = workers[uuid];
-      query = "";
-      try {
-        query = parseBody(body);
-      } catch(e) {
-        logger.info("[%s] Exception in parsing log", worker.string);
-        logger.info("[%s] Log: " + qs.parse(body).data, worker.string);
-      }
+      if (worker) {
+        query = "";
+        try {
+          query = parseBody(body);
+        } catch(e) {
+          logger.info("[%s] Exception in parsing log", worker.string);
+          logger.info("[%s] Log: " + qs.parse(body).data, worker.string);
+        }
 
-      if (query.tracebacks) {
-        query.tracebacks.forEach(function(traceback) {
-          logger.info(chalk.red("[%s] Error:"), worker.string, formatTraceback(traceback));
-        });
+        if (query.tracebacks) {
+          query.tracebacks.forEach(function(traceback) {
+            logger.info(chalk.red("[%s] Error:"), worker.string, formatTraceback(traceback));
+          });
+        }
       }
       response.end();
     },