Add /_version api to the endpoint

Signed-off-by: Romy <[email protected]>

src/endpoint/endpoint.js

@@ -6,6 +6,7 @@
 require('../util/dotenv').load();
 require('../util/panic');
 require('../util/fips');
+const pkg = require('../../package.json');
 
 const dbg = require('../util/debug_module')(__filename);
 if (!dbg.get_process_name()) dbg.set_process_name('Endpoint');
@@ -294,6 +295,11 @@ function create_endpoint_handler(server_type, init_request_sdk, { virtual_hosts,
                 return fork_count_handler(req, res);
             } else if (req.url.startsWith('/endpoint_fork_id')) {
                 return endpoint_fork_id_handler(req, res);
+            } else if (req.url.startsWith('/_')) {
+                // internals non S3 requests
+                if (req.url === '/_version') {
+                    return version_handler(req, res);
+                }
             } else {
                 return s3_rest.handler(req, res);
             }
@@ -349,6 +355,21 @@ function fork_count_handler(req, res) {
     res.end(JSON.stringify(reply));
 }
 
+/**
+ * version_handler return the version of noobaa package
+ * @param {*} req 
+ * @param {*} res 
+ */
+function version_handler(req, res) {
+    const reply = {
+        version: pkg.version,
+    };
+    res.statusCode = 200;
+    res.setHeader('Content-Type', 'application/json');
+    res.setHeader('Content-Length', Buffer.byteLength(JSON.stringify(reply)));
+    res.end(JSON.stringify(reply));
+}
+
 /**
  * @param {typeof server_rpc.rpc} rpc 
  * @param {nb.APIClient} internal_rpc_client