Logback Appender for Google Cloud Logging does not comply with Error Reporting #4179

  private LogEntry logEntryFor(ILoggingEvent e) {
    StringBuilder payload = new StringBuilder(e.getFormattedMessage()).append('\n');
    writeStack(e.getThrowableProxy(), "", payload);

    Level level = e.getLevel();
    LogEntry.Builder builder =
        LogEntry.newBuilder(Payload.StringPayload.of(payload.toString().trim()))
            .setTimestamp(e.getTimeStamp())
            .setSeverity(severityFor(level));

    builder
        .addLabel(LEVEL_NAME_KEY, level.toString())
        .addLabel(LEVEL_VALUE_KEY, String.valueOf(level.toInt()));

    if (loggingEnhancers != null) {
      for (LoggingEnhancer enhancer : loggingEnhancers) {
        enhancer.enhanceLogEntry(builder);
      }
    }

    if (loggingEventEnhancers != null) {
      for (LoggingEventEnhancer enhancer : loggingEventEnhancers) {
        enhancer.enhanceLogEntry(builder, e);
      }
    }

    return builder.build();
  }