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write_json

The write_json processor converts an object in an event into a JSON string. You can customize the processor to choose the source and target field names.

Option Description Example
source Mandatory field that specifies the name of the field in the event containing the message or object to be parsed. If source is set to "message" and the input is {"message": {"key1":"value1", "key2":{"key3":"value3"}}}, then the write_json processor outputs the event as "{\"key1\":\"value1\",\"key2\":{\"key3\":\"value3\"}}".
target An optional field that specifies the name of the field in which the resulting JSON string should be stored. If target is not specified, then the source field is used. key1
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