forked from fabric8io/kubernetes-client
/
PortForwardEquivalent.java
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/
PortForwardEquivalent.java
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/**
* Copyright (C) 2015 Red Hat, 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 io.fabric8.kubernetes.examples.kubectl.equivalents;
import io.fabric8.kubernetes.client.KubernetesClient;
import io.fabric8.kubernetes.client.KubernetesClientBuilder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
/**
* This is Java equivalent for `kubectl port-forward my-pod 5000:6000`
*/
public class PortForwardEquivalent {
private static final Logger logger = LoggerFactory.getLogger(PortForwardEquivalent.class);
public static void main(String[] args) {
try (final KubernetesClient k8s = new KubernetesClientBuilder().build()) {
CountDownLatch countDownLatch = new CountDownLatch(1);
k8s.pods().inNamespace("default").withName("my-pod")
.portForward(80, 8080); // (container port , localhost port)
logger.info("Port forward open for 10 seconds");
boolean latchTerminationStatus = countDownLatch.await(10, TimeUnit.SECONDS);
if (!latchTerminationStatus) {
logger.debug("latch terminated before it's count reaching zero");
}
logger.info("Closing port forward");
} catch (InterruptedException interruptedException) {
Thread.currentThread().interrupt();
logger.warn("Interrupted while waiting for the port forward to be ready: {}", interruptedException.getMessage());
}
}
}