RFE: Make MAX_ERROR_TOKEN_LENGTH configurable

Gili

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Jun 5, 2023, 6:24:37 PM6/5/23

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Hi,

When Jackson throws an exception, it quotes the JSON that triggered the exception. Unfortunately, after MAX_ERROR_TOKEN_LENGTH bytes it truncates the message so if a section of interest is further down it becomes very hard to debug.

Is it possible to make this limit configurable?

Thank you,
Gili

Tatu Saloranta

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Jun 5, 2023, 6:30:24 PM6/5/23

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There is no way to configure this currently.

If anyone has time and interest in making this configurable I'd be
happy to help; it'd need to go via `JsonFactory.builder()`
configuration. But static config methods (static method, system
properties) not acceptable.

Ideally there would probably an extensible set (similar to new
StreamReadConstraints setting, but different) to modify so it'd be
easier to add/configure different settings.

-+ Tatu +-

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Gili Tzabari

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Jun 6, 2023, 9:03:41 AM6/6/23

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For what it's worth, I worked around the problem this way:

Throwable throwable = result.getThrowable();
if (throwable instanceof JsonProcessingException jpe)
{
  // Jackson truncates the JSON if it's too long. Let's log the full content.
  Object rawContent = jpe.getLocation().contentReference().getRawContent();
  log.error(rawContent.toString());
}

It's still ugly in the sense that there is no way to disable the original exception, so I get a truncated exception message first followed by this log.

Gili