2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2016-2018 Ericsson. All rights reserved.
4 * ================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 * SPDX-License-Identifier: Apache-2.0
18 * ============LICENSE_END=========================================================
21 package org.onap.policy.apex.tools.simple.wsclient;
23 import java.io.PrintStream;
25 import java.net.URISyntaxException;
26 import org.apache.commons.lang3.Validate;
27 import org.java_websocket.client.WebSocketClient;
28 import org.java_websocket.framing.CloseFrame;
29 import org.java_websocket.handshake.ServerHandshake;
32 * Simple WS client as an echo.
34 * @author Sven van der Meer (sven.van.der.meer@ericsson.com)
36 public class SimpleEcho extends WebSocketClient {
38 /** Application name, used as prompt. */
39 private final String appName;
41 // Output and error streams
42 private PrintStream outStream;
43 private PrintStream errStream;
46 * Creates a new simple echo object.
48 * @param server the name of the server as either IP address or fully qualified host name, must not be blank
49 * @param port the port to be used, must not be blank
50 * @param appName the application name, used as prompt, must not be blank
51 * @param outStream the stream for message output
52 * @param errStream the stream for error messages
53 * @throws URISyntaxException is URI could not be created from server/port settings
54 * @throws RuntimeException if server or port where blank
56 public SimpleEcho(final String server, final String port, final String appName, PrintStream outStream,
57 PrintStream errStream) throws URISyntaxException {
58 super(new URI("ws://" + server + ":" + port));
59 Validate.notBlank(appName, "SimpleEcho: given application name was blank");
61 this.appName = appName;
62 this.outStream = outStream;
63 this.errStream = errStream;
67 public void onClose(final int code, final String reason, final boolean remote) {
68 outStream.println(this.appName + ": Connection closed by " + (remote ? "APEX" : "me"));
69 outStream.print(" ==-->> ");
71 case CloseFrame.NORMAL:
72 outStream.println("normal");
74 case CloseFrame.GOING_AWAY:
75 outStream.println("APEX going away");
77 case CloseFrame.PROTOCOL_ERROR:
78 outStream.println("some protocol error");
80 case CloseFrame.REFUSE:
81 outStream.println("received unacceptable type of data");
83 case CloseFrame.NO_UTF8:
84 outStream.println("expected UTF-8, found something else");
86 case CloseFrame.TOOBIG:
87 outStream.println("message too big");
89 case CloseFrame.UNEXPECTED_CONDITION:
90 outStream.println("unexpected server condition");
93 outStream.println("unkown close frame code");
96 outStream.print(" ==-->> " + reason);
100 public void onError(final Exception ex) {
101 errStream.println(this.appName + ": " + ex.getMessage());
105 public void onMessage(final String message) {
106 outStream.println(this.appName + ": received");
107 outStream.println("---------------------------------");
108 outStream.println(message);
109 outStream.println("=================================");
114 public void onOpen(final ServerHandshake handshakedata) {
115 outStream.println(this.appName + ": opened connection to APEX (" + handshakedata.getHttpStatusMessage() + ")");