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/*
* ============LICENSE_START=======================================================
* ONAP : ccsdk features
* ================================================================================
* Copyright (C) 2019 highstreet technologies GmbH Intellectual Property.
* All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.ccsdk.features.sdnr.wt.common.database;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.nio.channels.SocketChannel;
import org.onap.ccsdk.features.sdnr.wt.common.database.config.HostInfo;
public class Portstatus {
public static final int MIN_PORT_NUMBER = 0;
public static final int MAX_PORT_NUMBER = 65535;
/**
* Checks to see if a specific port is available.
*
* @param port the port to check for availability
*/
public static boolean isAvailable(String dnsName, int port) {
if (port < MIN_PORT_NUMBER || port > MAX_PORT_NUMBER) {
throw new IllegalArgumentException("Invalid start port: " + port);
}
SocketChannel channel = null;
SocketAddress socketAddress = new InetSocketAddress(dnsName, port);
try {
channel = SocketChannel.open(socketAddress);
return true;
} catch (IOException e) {
} finally {
if (channel != null) {
try {
channel.close();
} catch (IOException e) {
/* should not be thrown */
}
}
}
return false;
}
public static boolean isAvailable(HostInfo... hosts) {
for (HostInfo host : hosts) {
if (!isAvailable(host.hostname, host.port)) {
return false;
}
}
return true;
}
public static boolean waitSecondsTillAvailable(long timeoutSeconds, HostInfo... hosts) {
if (timeoutSeconds < 0) {
throw new IllegalArgumentException("Invalid timeout: " + timeoutSeconds);
}
long waitSeconds = 0;
boolean res = false;
while ((timeoutSeconds == 0 || ++waitSeconds < timeoutSeconds) && !(res = isAvailable(hosts))) {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
}
return res;
}
public static boolean waitSecondsTillAvailable(long timeoutSeconds, String dnsName, int port) {
return waitSecondsTillAvailable(timeoutSeconds, new HostInfo(dnsName, port));
}
}
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