kenhuuu commented on code in PR #3384:
URL: https://github.com/apache/tinkerpop/pull/3384#discussion_r3163587058
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gremlin-server/src/main/java/org/apache/tinkerpop/gremlin/server/handler/HttpGremlinEndpointHandler.java:
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@@ -392,6 +392,15 @@ private void iterateScriptEvalResult(final Context
context, MessageSerializer<?>
final String language = args.containsKey(Tokens.ARGS_LANGUAGE) ?
(String) args.get(Tokens.ARGS_LANGUAGE) : "gremlin-lang";
final GremlinScriptEngine scriptEngine =
gremlinExecutor.getScriptEngineManager().getEngineByName(language);
+ if (scriptEngine == null) {
Review Comment:
This check can be done as soon as the RequestMessage is formed so it should
be done before sendHttpResponse() so that the reponse from the server is an
error rather than a 200 OK.
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