How to use

isValidNumber

method

in

com.googlecode.jmxtrans.util.NumberUtils

public static boolean isValidNumber(Object value) {
  if (value == null) {
    return false;
  }
  if (value instanceof Number) {
    return isValidNumber((Number) value);
  }
  if (value instanceof String) {
    return isNumeric(value);
  }
  return false;
}

  @Override
  public void write(
      @Nonnull Writer writer,
      @Nonnull Server server,
      @Nonnull Query query,
      @Nonnull Iterable<Result> results) throws IOException {

    for (Result result : results) {
      log.debug("Query result: {}", result);
      Object value = result.getValue();
      if (isValidNumber(value)) {

        String line = KeyUtils.getKeyString(server, query, result, typeNames, rootPrefix)
            .replaceAll("[()]", "_") + " " + value.toString() + " "
            + SECONDS.convert(result.getEpoch(), MILLISECONDS) + "\n";
        log.debug("Graphite Message: {}", line);
        writer.write(line);
      } else {
        onlyOnceLogger.infoOnce("Unable to submit non-numeric value to Graphite: [{}] from result [{}]", value, result);
      }
    }
  }
}

@Override
public void internalWrite(Server server, Query query, ImmutableList<Result> results) throws Exception {
  Socket socket = null;
  PrintWriter writer = null;
  try {
    socket = pool.borrowObject(address);
    writer = new PrintWriter(new OutputStreamWriter(socket.getOutputStream(), UTF_8), true);
    List<String> typeNames = this.getTypeNames();
    for (Result result : results) {
      log.debug("Query result: {}", result);
      Object value = result.getValue();
      if (isValidNumber(value)) {
        String line = KeyUtils.getKeyString(server, query, result, typeNames, rootPrefix)
            .replaceAll("[()]", "_") + " " + value.toString() + " "
            + result.getEpoch() / 1000 + "\n";
        log.debug("Graphite Message: {}", line);
        writer.write(line);
      } else {
        onlyOnceLogger.infoOnce("Unable to submit non-numeric value to Graphite: [{}] from result [{}]", value, result);
      }
    }
  } finally {
    if (writer != null && writer.checkError()) {
      log.error("Error writing to Graphite, clearing Graphite socket pool");
      pool.invalidateObject(address, socket);
    } else {
      pool.returnObject(address, socket);
    }
  }
}

if (isValidNumber(value) || allowStringValues && value instanceof String) {
  filteredValues.put(key, value);

public static boolean isValidNumber(Object value) {
  if (value == null) {
    return false;
  }
  if (value instanceof Number) {
    return isValidNumber((Number) value);
  }
  if (value instanceof String) {
    return isNumeric(value);
  }
  return false;
}

  @Override
  public void write(
      @Nonnull Writer writer,
      @Nonnull Server server,
      @Nonnull Query query,
      @Nonnull Iterable<Result> results) throws IOException {

    for (Result result : results) {
      log.debug("Query result: {}", result);
      Object value = result.getValue();
      if (isValidNumber(value)) {

        String line = KeyUtils.getKeyString(server, query, result, typeNames, rootPrefix)
            .replaceAll("[()]", "_") + " " + value.toString() + " "
            + SECONDS.convert(result.getEpoch(), MILLISECONDS) + "\n";
        log.debug("Graphite Message: {}", line);
        writer.write(line);
      } else {
        onlyOnceLogger.infoOnce("Unable to submit non-numeric value to Graphite: [{}] from result [{}]", value, result);
      }
    }
  }
}

@Override
public void internalWrite(Server server, Query query, ImmutableList<Result> results) throws Exception {
  Socket socket = null;
  PrintWriter writer = null;
  try {
    socket = pool.borrowObject(address);
    writer = new PrintWriter(new OutputStreamWriter(socket.getOutputStream(), UTF_8), true);
    List<String> typeNames = this.getTypeNames();
    for (Result result : results) {
      log.debug("Query result: {}", result);
      Object value = result.getValue();
      if (isValidNumber(value)) {
        String line = KeyUtils.getKeyString(server, query, result, typeNames, rootPrefix)
            .replaceAll("[()]", "_") + " " + value.toString() + " "
            + result.getEpoch() / 1000 + "\n";
        log.debug("Graphite Message: {}", line);
        writer.write(line);
      } else {
        onlyOnceLogger.infoOnce("Unable to submit non-numeric value to Graphite: [{}] from result [{}]", value, result);
      }
    }
  } finally {
    if (writer != null && writer.checkError()) {
      log.error("Error writing to Graphite, clearing Graphite socket pool");
      pool.invalidateObject(address, socket);
    } else {
      pool.returnObject(address, socket);
    }
  }
}

if (isValidNumber(value)) {
  String key = KeyUtils.getPrefixedKeyString(query, result, typeNames);
  filteredValues.put(key, value);