Example usage for java.io ObjectOutputStream flush

Introduction

In this page you can find the example usage for java.io ObjectOutputStream flush.

Prototype

public void flush() throws IOException 

Source Link

Document

Flushes the stream.

Usage

From source file:com.google.u2f.gaedemo.impl.DataStoreImpl.java

@Override
public String storeSessionData(EnrollSessionData sessionData) {

    SecretKey key = new SecretKeySpec(SecretKeys.get().sessionEncryptionKey(), "AES");
    byte[] ivBytes = new byte[16];
    random.nextBytes(ivBytes);/*w w  w .  java  2s.co  m*/
    final IvParameterSpec IV = new IvParameterSpec(ivBytes);
    Cipher cipher;
    try {
        cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        cipher.init(Cipher.ENCRYPT_MODE, key, IV);
    } catch (NoSuchAlgorithmException | NoSuchPaddingException | InvalidKeyException
            | InvalidAlgorithmParameterException e) {
        throw new RuntimeException(e);
    }

    SealedObject sealed;
    try {
        sealed = new SealedObject(sessionData, cipher);
    } catch (IllegalBlockSizeException | IOException e) {
        throw new RuntimeException(e);
    }

    ByteArrayOutputStream out;
    try {
        out = new ByteArrayOutputStream();
        ObjectOutputStream outer = new ObjectOutputStream(out);

        outer.writeObject(sealed);
        outer.flush();
    } catch (IOException e) {
        throw new RuntimeException(e);
    }

    return Base64.encodeBase64URLSafeString(out.toByteArray());
}

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From source file:org.apache.jcs.auxiliary.lateral.socket.udp.LateralUDPSender.java

/** Description of the Method */
public void send(LateralElementDescriptor led) throws IOException {
    log.debug("sending LateralElementDescriptor");

    try {/*ww  w. ja  va2s.  c o m*/
        final MyByteArrayOutputStream byteStream = new MyByteArrayOutputStream();

        final ObjectOutputStream objectStream = new ObjectOutputStream(byteStream);

        objectStream.writeObject(led);
        objectStream.flush();

        final byte[] bytes = byteStream.getBytes();

        final DatagramPacket packet = new DatagramPacket(bytes, bytes.length, m_multicastAddress,
                m_multicastPort);

        m_localSocket.send(packet);
    } catch (IOException e) {
        log.error("Error sending message", e);

        throw e;
    }
}

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From source file:edu.umd.cs.buildServer.util.ServletAppender.java

@Override
protected void append(LoggingEvent event) {
    if (!APPEND_TO_SUBMIT_SERVER)
        return;/* w w  w  .java  2 s.  c  o m*/
    try {
        Throwable throwable = null;
        if (event.getThrowableInformation() != null) {
            String[] throwableStringRep = event.getThrowableStrRep();
            StringBuffer stackTrace = new StringBuffer();
            for (String stackTraceString : throwableStringRep) {
                stackTrace.append(stackTraceString);
            }
            throwable = new Throwable(stackTrace.toString());
        }

        LoggingEvent newLoggingEvent = new LoggingEvent(event.getFQNOfLoggerClass(), event.getLogger(),
                event.getLevel(), getConfig().getHostname() + ": " + event.getMessage(), throwable);

        HttpClient client = new HttpClient();
        client.setConnectionTimeout(HTTP_TIMEOUT);

        String logURL = config.getServletURL(SUBMIT_SERVER_HANDLEBUILDSERVERLOGMESSAGE_PATH);

        MultipartPostMethod post = new MultipartPostMethod(logURL);
        // add password

        ByteArrayOutputStream sink = new ByteArrayOutputStream();
        ObjectOutputStream out = new ObjectOutputStream(sink);

        out.writeObject(newLoggingEvent);
        out.flush();
        // add serialized logging event object
        post.addPart(new FilePart("event", new ByteArrayPartSource("event.out", sink.toByteArray())));

        int status = client.executeMethod(post);
        if (status != HttpStatus.SC_OK) {
            throw new IOException("Couldn't contact server: " + status);
        }
    } catch (IOException e) {
        // TODO any way to log these without an infinite loop?
        System.err.println(e.getMessage());
        e.printStackTrace(System.err);
    }
}

---

From source file:edu.caltechUcla.sselCassel.projects.jMarkets.server.network.ServletReceiver.java

/** Send the given reponse to the client waiting for the given HttpServletResponse */
protected void respond(HttpServletResponse r, Response res) {
    try {/*  w  w  w .java2  s .  co m*/
        OutputStream out = r.getOutputStream();
        ObjectOutputStream outputToApplet = new ObjectOutputStream(out);
        outputToApplet.writeObject(res);

        outputToApplet.flush();
        outputToApplet.close();
    } catch (IOException e) {
        log.error("Failed to respond to request", e);
    }
}

---

From source file:com.bskyb.cg.environments.hash.PersistentHash.java

private synchronized void appendEntryToStore(Message message) throws IOException {

    String filename = message.getKey();

    File file = new File(dirname, filename);
    FileOutputStream fos = new FileOutputStream(file, true);
    BufferedOutputStream bos = new BufferedOutputStream(fos);
    ObjectOutputStream oos = new ObjectOutputStream(bos);

    oos.writeObject(message);/*from  ww w . j a  v a2s .co  m*/
    oos.flush();
    oos.close();
    fos.flush();
    fos.close();
}

---

From source file:org.apache.hc.client5.http.impl.auth.TestBasicScheme.java

@Test
public void testSerializationUnchallenged() throws Exception {
    final BasicScheme basicScheme = new BasicScheme();

    final ByteArrayOutputStream buffer = new ByteArrayOutputStream();
    final ObjectOutputStream out = new ObjectOutputStream(buffer);
    out.writeObject(basicScheme);//from  w  w w.ja  v a 2s . c om
    out.flush();
    final byte[] raw = buffer.toByteArray();
    final ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(raw));
    final BasicScheme authScheme = (BasicScheme) in.readObject();

    Assert.assertEquals(basicScheme.getName(), authScheme.getName());
    Assert.assertEquals(basicScheme.getRealm(), authScheme.getRealm());
    Assert.assertEquals(basicScheme.isChallengeComplete(), authScheme.isChallengeComplete());
}

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From source file:org.LexGrid.LexBIG.caCore.client.proxy.ProxyUnwrappingHttpInvokerRequestExecutor.java

protected void writeRemoteInvocation(RemoteInvocation invocation, OutputStream os) throws IOException {
    ObjectOutputStream oos = new ProxyUnwrappingObjectStream(decorateOutputStream(os));
    try {//from   w  w  w. ja  v  a 2s .c  o  m
        doWriteRemoteInvocation(invocation, oos);
        oos.flush();
    } finally {
        oos.close();
    }
}

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From source file:org.kawanfw.file.reflection.ClassSerializer.java

/**
 * Serializes a class instance into a base64 String.
 * /*from   www  . ja va 2s  .  c  o  m*/
 * @param element
 *            the class instance to Serialize
 * @return the base64 string containing the serialized class instance
 * 
 * @throws IOException
 *             Any exception thrown by the underlying OutputStream.
 */
public String toBase64(E element) throws IOException {

    String serializedBase64 = null;

    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    ObjectOutputStream oos = null;

    try {
        oos = new ObjectOutputStream(bos);
        oos.writeObject(element);
        oos.flush();
        byte[] byteArray = bos.toByteArray();
        serializedBase64 = Base64.byteArrayToBase64(byteArray);

    } finally {
        IOUtils.closeQuietly(oos);
    }

    return serializedBase64;
}

---

From source file:org.apache.storm.hdfs.security.AutoHDFS.java

@SuppressWarnings("unchecked")
private byte[] getHadoopCredentials(Map conf, final Configuration configuration) {
    try {/*ww w.  ja  va 2s.c o m*/
        if (UserGroupInformation.isSecurityEnabled()) {
            login(configuration);

            final String topologySubmitterUser = (String) conf.get(Config.TOPOLOGY_SUBMITTER_PRINCIPAL);

            final URI nameNodeURI = conf.containsKey(TOPOLOGY_HDFS_URI)
                    ? new URI(conf.get(TOPOLOGY_HDFS_URI).toString())
                    : FileSystem.getDefaultUri(configuration);

            UserGroupInformation ugi = UserGroupInformation.getCurrentUser();

            final UserGroupInformation proxyUser = UserGroupInformation.createProxyUser(topologySubmitterUser,
                    ugi);

            Credentials creds = (Credentials) proxyUser.doAs(new PrivilegedAction<Object>() {
                @Override
                public Object run() {
                    try {
                        FileSystem fileSystem = FileSystem.get(nameNodeURI, configuration);
                        Credentials credential = proxyUser.getCredentials();

                        fileSystem.addDelegationTokens(hdfsPrincipal, credential);
                        LOG.info("Delegation tokens acquired for user {}", topologySubmitterUser);
                        return credential;
                    } catch (IOException e) {
                        throw new RuntimeException(e);
                    }
                }
            });

            ByteArrayOutputStream bao = new ByteArrayOutputStream();
            ObjectOutputStream out = new ObjectOutputStream(bao);

            creds.write(out);
            out.flush();
            out.close();

            return bao.toByteArray();
        } else {
            throw new RuntimeException("Security is not enabled for HDFS");
        }
    } catch (Exception ex) {
        throw new RuntimeException("Failed to get delegation tokens.", ex);
    }
}

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From source file:org.apache.hc.client5.http.impl.auth.TestBasicScheme.java

@Test
public void testSerialization() throws Exception {
    final AuthChallenge authChallenge = parse("Basic realm=\"test\"");

    final BasicScheme basicScheme = new BasicScheme();
    basicScheme.processChallenge(authChallenge, null);

    final ByteArrayOutputStream buffer = new ByteArrayOutputStream();
    final ObjectOutputStream out = new ObjectOutputStream(buffer);
    out.writeObject(basicScheme);/*from  ww w . java 2  s.co m*/
    out.flush();
    final byte[] raw = buffer.toByteArray();
    final ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(raw));
    final BasicScheme authScheme = (BasicScheme) in.readObject();

    Assert.assertEquals(basicScheme.getName(), authScheme.getName());
    Assert.assertEquals(basicScheme.getRealm(), authScheme.getRealm());
    Assert.assertEquals(basicScheme.isChallengeComplete(), authScheme.isChallengeComplete());
}

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