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;
27 import org.apache.commons.lang3.Validate;
28 import org.java_websocket.client.WebSocketClient;
29 import org.java_websocket.framing.CloseFrame;
30 import org.java_websocket.handshake.ServerHandshake;
33 * Simple WS client as an echo.
35 * @author Sven van der Meer (sven.van.der.meer@ericsson.com)
37 public class SimpleEcho extends WebSocketClient {
39 /** Application name, used as prompt. */
40 private final String appName;
42 // Output and error streams
43 private PrintStream outStream;
44 private PrintStream errStream;
47 * Creates a new simple echo object.
49 * @param server the name of the server as either IP address or fully qualified host name, must not be blank
50 * @param port the port to be used, must not be blank
51 * @param appName the application name, used as prompt, must not be blank
52 * @param outStream the stream for message output
53 * @param errStream the stream for error messages
54 * @throws URISyntaxException is URI could not be created from server/port settings
55 * @throws RuntimeException if server or port where blank
57 public SimpleEcho(final String server, final String port, final String appName, PrintStream outStream,
58 PrintStream errStream) throws URISyntaxException {
59 super(new URI("ws://" + server + ":" + port));
60 Validate.notBlank(appName, "SimpleEcho: given application name was blank");
62 this.appName = appName;
63 this.outStream = outStream;
64 this.errStream = errStream;
68 public void onClose(final int code, final String reason, final boolean remote) {
69 outStream.println(this.appName + ": Connection closed by " + (remote ? "APEX" : "me"));
70 outStream.print(" ==-->> ");
72 case CloseFrame.NORMAL:
73 outStream.println("normal");
75 case CloseFrame.GOING_AWAY:
76 outStream.println("APEX going away");
78 case CloseFrame.PROTOCOL_ERROR:
79 outStream.println("some protocol error");
81 case CloseFrame.REFUSE:
82 outStream.println("received unacceptable type of data");
84 case CloseFrame.NO_UTF8:
85 outStream.println("expected UTF-8, found something else");
87 case CloseFrame.TOOBIG:
88 outStream.println("message too big");
90 case CloseFrame.UNEXPECTED_CONDITION:
91 outStream.println("unexpected server condition");
94 outStream.println("unkown close frame code");
97 outStream.print(" ==-->> " + reason);
101 public void onError(final Exception ex) {
102 errStream.println(this.appName + ": " + ex.getMessage());
106 public void onMessage(final String message) {
107 outStream.println(this.appName + ": received");
108 outStream.println("---------------------------------");
109 outStream.println(message);
110 outStream.println("=================================");
115 public void onOpen(final ServerHandshake handshakedata) {
116 outStream.println(this.appName + ": opened connection to APEX (" + handshakedata.getHttpStatusMessage() + ")");