[nxrm] Export audit records from NXRM3

exportAudit.groovy

import groovy.json.*

def outputFile = new File("auditExport.json")
def auditStore = container.lookup("org.sonatype.nexus.audit.internal.AuditStore")

int pageSize = 1000
int offset = 0

log.info("exporting audit data to ${outputFile.getAbsolutePath()}")

def output = new PrintWriter(outputFile)
def done = false
while (!done) {
    def records = auditStore.browse(offset, pageSize)
    records.each { r ->
        def attribs = [domain: r.domain, type: r.type, context: r.context, timestamp: r.timestamp, nodeId: r.nodeId, initiator: r.initiator, attributes: r.attributes]
        output.println(new JsonBuilder(attribs).toString())
    }
    if (records.isEmpty()) {
        done = true
    } else {
        offset += records.size()
        log.info("exported ${offset} audit records")
    }
}
output.close()