From 6565a22137e3a9f581a71c54cbdd018718875bdb Mon Sep 17 00:00:00 2001
From: SunnyBoy-WYH <48077841+SunnyBoy-WYH@users.noreply.github.com>
Date: Sat, 2 Mar 2024 01:23:01 +0800
Subject: [PATCH] fix(server): add tip for gremlin api NPE with empty query
 (#2467)

fix #2426
---
 .../main/java/org/apache/hugegraph/api/gremlin/GremlinAPI.java  | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/hugegraph-server/hugegraph-api/src/main/java/org/apache/hugegraph/api/gremlin/GremlinAPI.java b/hugegraph-server/hugegraph-api/src/main/java/org/apache/hugegraph/api/gremlin/GremlinAPI.java
index 4373b0f006..110a3ef5b8 100644
--- a/hugegraph-server/hugegraph-api/src/main/java/org/apache/hugegraph/api/gremlin/GremlinAPI.java
+++ b/hugegraph-server/hugegraph-api/src/main/java/org/apache/hugegraph/api/gremlin/GremlinAPI.java
@@ -20,6 +20,7 @@
 import org.apache.hugegraph.api.filter.CompressInterceptor.Compress;
 import org.apache.hugegraph.config.HugeConfig;
 import org.apache.hugegraph.metrics.MetricsUtil;
+import org.apache.hugegraph.util.E;
 
 import com.codahale.metrics.Histogram;
 import com.codahale.metrics.annotation.Timed;
@@ -77,6 +78,7 @@ public Response get(@Context HugeConfig conf,
                         @Context UriInfo uriInfo) {
         String auth = headers.getHeaderString(HttpHeaders.AUTHORIZATION);
         String query = uriInfo.getRequestUri().getRawQuery();
+        E.checkArgumentNotNull(query, "The request query can't be empty");
         MultivaluedMap<String, String> params = uriInfo.getQueryParameters();
         Response response = this.client().doGetRequest(auth, params);
         GREMLIN_INPUT_HISTOGRAM.update(query.length());