[TINKERPOP-2988] Serialization error throws an Invalid OpProcessor exception when using stream() API

• Type: Improvement
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 3.7.0
• Fix Version/s: 3.6.6, 3.7.1, 4.0.0
• Component/s: server
• Assignee: Ken Hu
• Reporter: Taylor Riggan
• Created: 22/Aug/23 12:22
• Updated: 08/Feb/24 22:08
• Resolved: 14/Nov/23 23:45

Description

The following throws an 

Invalid OpProcessor requested [null] (499)

 exception.  The cause is due to an invalid RequestId (an non-conformant UUID is being used):

resp = client.stream ("g.V()", {}, { batchSize: 1, requestId: 'foo', userAgent: 'bar', evaluationTimeout: 5000 });

 

The error was diagnosed using Gremlin Server 3.7.0 and seeing the following in the server logs:

 

[WARN] o.a.t.g.s.h.WsGremlinBinaryRequestDecoder - Serialization error while decoding request
org.apache.tinkerpop.gremlin.driver.ser.SerializationException: org.apache.tinkerpop.shaded.jackson.databind.JsonMappingException: Could not deserialize the JSON value as required. Nested exception: org.apache.tinkerpop.shaded.jackson.databind.exc.InvalidFormatException: Cannot deserialize value of type `java.util.UUID` from String "foo": UUID has to be represented by standard 36-char representation
 at [Source: (byte[])"{"requestId":{{{}
{"@type":"g:UUID","@value":"foo"}
{}}},"op":"eval","processor":"","args":{"gremlin":"g.V()","aliases":{{{}
{"g":"g"}
{}}},"batchSize":1,"userAgent":"bar","evaluationTimeout":5000,"bindings":{},"language":"gremlin-groovy","accept":"application/vnd.gremlin-v3.0+json""; line: 1, column: 41]{}}}
 at [Source: (byte[])"{"requestId":{{{}
{"@type":"g:UUID","@value":"foo"}
{}}},"op":"eval","processor":"","args":{"gremlin":"g.V()","aliases":{{{}
{"g":"g"}
{}}},"batchSize":1,"userAgent":"bar","evaluationTimeout":5000,"bindings":{},"language":"gremlin-groovy","accept":"application/vnd.gremlin-v3.0+json""; line: 1, column: 41] (through reference chain: java.util.LinkedHashMap["requestId"]){}}}
    at org.apache.tinkerpop.gremlin.driver.ser.AbstractGraphSONMessageSerializerV2d0.deserializeRequest(AbstractGraphSONMessageSerializerV2d0.java:124)
    at org.apache.tinkerpop.gremlin.server.handler.WsGremlinBinaryRequestDecoder.decode(WsGremlinBinaryRequestDecoder.java:77)
....

 

A better client side error message is needed in order to provide the user with guidance on how to fix the issue.  `Invalid OpProcessor` is too ambiguous.

Issue Links

• is related to: TINKERPOP-3054 RequestId serialization broken in Python GLV