Load the json in to flowfile content . Feed this to a Executescript Processor with the below code. Note this code assume that the json does not have nested element. Hope this help import org.apache.commons.io.IOUtils
import java.nio.charset.*
def flowFile = session.get();
if (flowFile == null) {
return;
}
def slurper = new groovy.json.JsonSlurper()
def attrs = [:] as Map<String,String>
session.read(flowFile,
{ inputStream ->
def text = IOUtils.toString(inputStream, StandardCharsets.UTF_8)
def obj = slurper.parseText(text)
obj.each {k,v ->
attrs[k] = v.toString()
}
} as InputStreamCallback)
def text = ''
// Cast a closure with an outputStream parameter to OutputStreamCallback
flowFile = session.write(flowFile, {outputStream ->
outputStream.write(text.getBytes(StandardCharsets.UTF_8))
} as OutputStreamCallback)
flowFile = session.putAllAttributes(flowFile, attrs)
session.transfer(flowFile , REL_SUCCESS)
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