improvement: add listener for uncaughtException

rahulreddy · rahulreddy · commit 7a1118e33c41 · 2019-05-21T14:34:29.000-07:00
This makes sure that uncaught exceptions are logged before the process
quits.
diff --git a/dataserver.js b/dataserver.js
@@ -4,6 +4,16 @@ const arsenal = require('arsenal');
 const { config } = require('./lib/Config.js');
 const logger = require('./lib/utilities/logger');
 
+process.on('uncaughtException', err => {
+    logger.fatal('caught error', {
+        error: err.message,
+        stack: err.stack,
+        workerId: this.worker ? this.worker.id : undefined,
+        workerPid: this.worker ? this.worker.process.pid : undefined,
+    });
+    process.exit(1);
+});
+
 if (config.backends.data === 'file' ||
     (config.backends.data === 'multiple' &&
      config.backends.metadata !== 'scality')) {
diff --git a/mdserver.js b/mdserver.js
@@ -3,6 +3,17 @@
 const { config } = require('./lib/Config.js');
 const MetadataFileServer =
           require('arsenal').storage.metadata.MetadataFileServer;
+const logger = require('./lib/utilities/logger');
+
+process.on('uncaughtException', err => {
+    logger.fatal('caught error', {
+        error: err.message,
+        stack: err.stack,
+        workerId: this.worker ? this.worker.id : undefined,
+        workerPid: this.worker ? this.worker.process.pid : undefined,
+    });
+    process.exit(1);
+});
 
 if (config.backends.metadata === 'file') {
     const mdServer = new MetadataFileServer(
