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Java example source code file (TestCache.java)

This example Java source code file (TestCache.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

cacheresponse, deploybytearrayoutputstream, deploycacherequest, ioexception, jar, map, net, network, security, ssl, string, testcache, url, urlconnection, util

The TestCache.java Java example source code

/*
 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

import java.net.*;
import java.io.*;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.BufferedInputStream;
import java.io.ByteArrayInputStream;
import java.io.PrintStream;
import java.io.InputStream;
import java.io.File;
import java.net.CacheRequest;
import java.net.CacheResponse;
import java.net.ResponseCache;
import java.net.URI;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import java.util.List;
import java.util.Iterator;
import java.util.StringTokenizer;
import java.util.jar.JarInputStream;
import java.util.jar.JarFile;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.security.PrivilegedExceptionAction;
import java.security.PrivilegedActionException;
import java.security.Principal;
import java.security.cert.Certificate;
import javax.net.ssl.SSLPeerUnverifiedException;

public class TestCache extends java.net.ResponseCache {
    private boolean inCacheHandler = false;
    private boolean _downloading = false;

    public static volatile boolean fail = false;

    public static void reset() {
        // Set system wide cache handler
        System.out.println("install deploy cache handler");
        ResponseCache.setDefault(new TestCache());
    }

    public synchronized CacheResponse get(final URI uri, String rqstMethod,
            Map requestHeaders) throws IOException {
        System.out.println("get: " + uri);
        Thread.currentThread().dumpStack();
        return null;
    }

    public synchronized CacheRequest put(URI uri, URLConnection conn)
    throws IOException {
        System.out.println("put: " + uri);
        Thread.currentThread().dumpStack();
        URL url = uri.toURL();
        return new DeployCacheRequest(url, conn);

    }
}

class DeployByteArrayOutputStream extends java.io.ByteArrayOutputStream {

    private URL _url;
    private URLConnection _conn;

    DeployByteArrayOutputStream(URL url, URLConnection conn) {
        _url = url;
        _conn = conn;
    }


    public void close() throws IOException {

        System.out.println("contentLength: " + _conn.getContentLength());
        System.out.println("byte array size: " + size());
        if ( _conn.getContentLength() == size()) {
            System.out.println("correct content length");
        } else {
            System.out.println("wrong content length");
            System.out.println("TEST FAILED");
            TestCache.fail = true;
        }
        super.close();
    }
}

class DeployCacheRequest extends java.net.CacheRequest {

    private URL _url;
    private URLConnection _conn;
    private boolean _downloading = false;

    DeployCacheRequest(URL url, URLConnection conn) {
        System.out.println("DeployCacheRequest ctor for: " + url);
        _url = url;
        _conn = conn;
    }

    public void abort() {
        System.out.println("abort called");
    }

    public OutputStream getBody() throws IOException {
        System.out.println("getBody called");
        return new DeployByteArrayOutputStream(_url, _conn);
    }
}

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