Merge pull request #1386 from juju812/master

kubernetes-examples/src/main/java/io/fabric8/kubernetes/examples/ExecExampleWithTerminalSize.java

@@ -0,0 +1,86 @@
+/**
+ * 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 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 okhttp3.Response;
+
+public class ExecExampleWithTerminalSize {
+
+    public static void main(String[] args) throws InterruptedException {
+        if (args.length < 1) {
+            System.out.println("Usage: podName [master] [namespace] [columns] [lines]\n" +
+              "Use env variable COLUMNS & LINES to initialize terminal size.");
+            return;
+          }
+
+        String podName = args[0];
+        String namespace = "default";
+        String master = "https://localhost:8443/";
+        String columns = "80";
+        String lines = "24";
+
+        if (args.length > 1) {
+            master = args[1];
+          }
+          if (args.length > 2) {
+            namespace = args[2];
+            if (args.length > 3) {
+              columns = args[3];
+              if (args.length > 4) {
+                lines = args[4];
+              }
+            }
+          }
+
+        Config config = new ConfigBuilder().withMasterUrl(master).build();
+        try (final KubernetesClient client = new DefaultKubernetesClient(config);
+             ExecWatch watch = client.pods().inNamespace(namespace).withName(podName)
+                .readingInput(System.in)
+                .writingOutput(System.out)
+                .writingError(System.err)
+                .withTTY()
+                .usingListener(new SimpleListener())
+                .exec("env", "TERM%3Dxterm", "COLUMNS%3D" + columns, "LINES%3D" + lines, "bash")){
+
+            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(Throwable t, Response response) {
+            System.err.println("shell barfed");
+        }
+
+        @Override
+        public void onClose(int code, String reason) {
+            System.out.println("The shell will now close.");
+        }
+    }
+
+}