Merge pull request #900 from yue9944882/feat/exec-resize

Feat: Implementing resizable/error exec stream

Author: k8s-ci-robot

util/src/main/java/io/kubernetes/client/Exec.java

@@ -349,7 +349,7 @@ static int parseExitCode(ApiClient client, InputStream inputStream) {
     return -1;
   }
 
-  protected static class ExecProcess extends Process {
+  public static class ExecProcess extends Process {
     private final WebSocketStreamHandler streamHandler;
     private int statusCode = -1;
     private boolean isAlive = true;
@@ -425,6 +425,14 @@ public InputStream getErrorStream() {
       return getInputStream(2);
     }
 
+    public InputStream getConnectionErrorStream() {
+      return getInputStream(3);
+    }
+
+    public OutputStream getResizeStream() {
+      return streamHandler.getOutputStream(4);
+    }
+
     private synchronized InputStream getInputStream(int stream) {
       if (!input.containsKey(stream)) {
         input.put(stream, streamHandler.getInputStream(stream));