parse_json() returns MissingNode if input wasn't valid JSON

Graylog2 / graylog-plugin-pipeline-processor

[DEPRECATED] Graylog Pipeline Message Processor Plugins

https://www.graylog.org/

GNU General Public License v3.0

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Closed joschi closed 7 years ago

joschi commented 7 years ago

The parse_json() function is supposed to return a JsonNode but returned null if the input wasn't valid JSON.

This change set changes the return type to MissingNode if the input wasn't valid and couldn't be parsed.

Closes #209