com.datastax.driver.core.MetricsUtil Maven / Gradle / Ivy
/*
* Copyright DataStax, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.datastax.driver.core;
import java.net.InetAddress;
public class MetricsUtil {
public static String hostMetricName(String prefix, Host host) {
EndPoint endPoint = host.getEndPoint();
if (endPoint instanceof TranslatedAddressEndPoint) {
InetAddress address = endPoint.resolve().getAddress();
return hostMetricNameFromAddress(prefix, address);
} else {
// We have no guarantee that endpoints resolve to unique addresses
return prefix + endPoint.toString();
}
}
private static String hostMetricNameFromAddress(String prefix, InetAddress address) {
StringBuilder result = new StringBuilder(prefix);
boolean first = true;
for (byte b : address.getAddress()) {
if (first) {
first = false;
} else {
result.append('_');
}
result.append(b & 0xFF);
}
return result.toString();
}
}