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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;

import com.squareup.okhttp.Response;
import io.fabric8.kubernetes.client.Config;
import io.fabric8.kubernetes.client.ConfigBuilder;
import io.fabric8.kubernetes.client.DefaultKubernetesClient;
import io.fabric8.kubernetes.client.KubernetesClient;
import io.fabric8.kubernetes.client.dsl.ExecListener;
import io.fabric8.kubernetes.client.dsl.ExecWatch;

import java.io.IOException;

public class ExecExample {

    public static void main(String[] args) throws InterruptedException {
        String master = "https://localhost:8443/";
        String podName = null;

        if (args.length == 2) {
            master = args[0];
            podName = args[1];
        }
        if (args.length == 1) {
            podName = args[0];
        }

        Config config = new ConfigBuilder().withMasterUrl(master).build();
        try (final KubernetesClient client = new DefaultKubernetesClient(config);
             ExecWatch watch = client.pods().withName(podName)
                .readingInput(System.in)
                .writingOutput(System.out)
                .writingError(System.err)
                .withTTY()
                .usingListener(new SimpleListener())
                .exec()){

            Thread.sleep(10 * 1000);
        }
    }

    private static class SimpleListener implements ExecListener {

        @Override
        public void onOpen(Response response) {
            System.out.println("The shell will remain open for 10 seconds.");
        }

        @Override
        public void onFailure(IOException e, Response response) {
            System.err.println("shell barfed");
        }

        @Override
        public void onClose(int code, String reason) {
            System.out.println("The shell will now close.");
        }
    }

}