log_error.java

final AggregatedLogData logData = new AggregatedLogData();
logData.setLevel(AggregatedLogLevel.FULL);
boolean error = false;
try {
    // .. execute code here
} catch (Exception e) {
  logData.collectException("Failed to process rules", e);
  error = true;
} finally {
  if (error) {
    logData.setLevel(AggregatedLogLevel.EXHAUSTIVE); // print all on error
    log.error(logData.toJsonString());
  } else {
    log.info(logData.toJsonString());
  }
}