Jackson behavior change in 2.15 can disrupt eventbus

[pmlopes]

Version

Which version(s) did you encounter this bug ?

• 4.5.x
• 5.x

Context

I encountered an exception which looks suspicious while transporting a large JSON payload over the eventbus. When the jackson library was updated to >= 2.15

The issue is related to: https://github.com/FasterXML/jackson/wiki/Jackson-Release-2.15#processing-limits

Jackson now imposes default limits on encode/decode for security reasons. However there is no obvious way to address those exceptions being bubbled from:

https://github.com/eclipse-vertx/vert.x/blob/master/vertx-core/src/main/java/io/vertx/core/eventbus/impl/codecs/JsonObjectMessageCodec.java#L34

Do you have a reproducer?

new JsonObject(... very large string say >20Mb)

Should throw a DecodeException which steam from the new settings:

https://github.com/FasterXML/jackson-core/blob/2.19/src/main/java/com/fasterxml/jackson/core/StreamReadConstraints.java

Extra

A fix would be to have a way to control the JsonFactory here:

https://github.com/eclipse-vertx/vert.x/blob/master/vertx-core/src/main/java/io/vertx/core/json/jackson/JacksonCodec.java#L51

[vietj]

thanks for reporting, the only way I think we can address configurability is using system properties to control that since this is a static declaration

[vietj]

See #5490 for master