org.apache.inlong.audit.util.Config Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.inlong.audit.util;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;
public class Config {
private static final Logger logger = LoggerFactory.getLogger(Config.class);
private String localIP = "";
private String dockerId = "";
private static final int CGROUP_FILE_LENGTH = 50;
private static final int DOCKERID_LENGTH = 10;
public void init() {
initIP();
initDockerId();
}
public String getLocalIP() {
return localIP;
}
public String getDockerId() {
return dockerId;
}
private void initIP() {
try {
for (Enumeration en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
NetworkInterface intf = en.nextElement();
String name = intf.getName();
if (!name.contains("docker") && !name.contains("lo")) {
for (Enumeration enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {
InetAddress inetAddress = enumIpAddr.nextElement();
if (!inetAddress.isLoopbackAddress()) {
String ipaddress = inetAddress.getHostAddress();
if (!ipaddress.contains("::") && !ipaddress.contains("0:0:")
&& !ipaddress.contains("fe80")) {
localIP = ipaddress;
}
}
}
}
}
} catch (SocketException ex) {
localIP = "127.0.0.1";
return;
}
}
private void initDockerId() {
File file = new File("/proc/self/cgroup");
if (!file.exists()) {
return;
}
try (BufferedReader in = new BufferedReader(new FileReader("/proc/self/cgroup"))) {
String dockerID = in.readLine();
if (dockerID == null || dockerID.length() < CGROUP_FILE_LENGTH) {
in.close();
return;
}
dockerId = dockerID.substring(dockerID.length() - DOCKERID_LENGTH);
in.close();
} catch (Exception ex) {
logger.error(ex.toString());
}
}
}