Examples with ObjectOutput java.io.ObjectOutput used on opensource projects

Example 51 with ObjectOutput

use of java.io.ObjectOutput in project stream-lib by addthis.

the class TestStreamSummary method testCounterSerialization.

@SuppressWarnings("unchecked")
@Test
public void testCounterSerialization() throws IOException, ClassNotFoundException {
    StreamSummary<String> vs = new StreamSummary<String>(3);
    String[] stream = { "X", "X", "Y", "Z", "A", "B", "C", "X", "X", "A", "C", "A", "A" };
    for (String i : stream) {
        vs.offer(i);
    }
    List<Counter<String>> topK = vs.topK(3);
    for (Counter<String> c : topK) {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        ObjectOutput oo = new ObjectOutputStream(baos);
        oo.writeObject(c);
        oo.close();
        ObjectInput oi = new ObjectInputStream(new ByteArrayInputStream(baos.toByteArray()));
        Counter<String> clone = (Counter<String>) oi.readObject();
        assertEquals(c.getCount(), clone.getCount());
        assertEquals(c.getError(), clone.getError());
        assertEquals(c.getItem(), clone.getItem());
    }
}

Example 52 with ObjectOutput

use of java.io.ObjectOutput in project stream-lib by addthis.

the class TestStreamSummary method testSerialization.

@SuppressWarnings("unchecked")
@Test
public void testSerialization() throws IOException, ClassNotFoundException {
    StreamSummary<String> vs = new StreamSummary<String>(3);
    String[] stream = { "X", "X", "Y", "Z", "A", "B", "C", "X", "X", "A", "C", "A", "A" };
    for (String i : stream) {
        vs.offer(i);
    }
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    ObjectOutput oo = new ObjectOutputStream(baos);
    oo.writeObject(vs);
    oo.close();
    ObjectInput oi = new ObjectInputStream(new ByteArrayInputStream(baos.toByteArray()));
    StreamSummary<String> clone = (StreamSummary<String>) oi.readObject();
    assertEquals(vs.toString(), clone.toString());
}

Example 53 with ObjectOutput

use of java.io.ObjectOutput in project wildfly by wildfly.

the class DsTestCase method testDatasourceSerialization.

@Test
public void testDatasourceSerialization() throws Exception {
    InitialContext context = new InitialContext();
    DataSource originalDs = (DataSource) context.lookup(JNDI_NAME);
    //serialize
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    ObjectOutput out = null;
    DataSource ds;
    ObjectInput in = null;
    try {
        out = new ObjectOutputStream(bos);
        out.writeObject(originalDs);
        byte[] bytes = bos.toByteArray();
        //deserialize
        ByteArrayInputStream bis = new ByteArrayInputStream(bytes);
        try {
            in = new ObjectInputStream(bis);
            ds = (DataSource) in.readObject();
        } finally {
            try {
                bis.close();
            } catch (IOException ex) {
            // ignore close exception
            }
            try {
                if (in != null) {
                    in.close();
                }
            } catch (IOException ex) {
            // ignore close exception
            }
        }
        //use
        Connection conn = ds.getConnection();
        ResultSet rs = conn.prepareStatement("select 1").executeQuery();
        Assert.assertTrue(rs.next());
        conn.close();
    } finally {
        try {
            if (out != null) {
                out.close();
            }
        } catch (IOException ex) {
        // ignore close exception
        }
        try {
            bos.close();
        } catch (IOException ex) {
        // ignore close exception
        }
    }
}

Example 54 with ObjectOutput

use of java.io.ObjectOutput in project motan by weibocom.

the class CompressRpcCodec method encodeResponse.

/**
     * response body 数据：
     * 
     * <pre>
	 * 
	 * body:
	 * 
	 * 	 byte[] :  serialize (result) or serialize (exception)
	 * 
	 * </pre>
     *
     * @param channel
     * @param value
     * @return
     * @throws IOException
     */
private byte[] encodeResponse(Channel channel, Response value) throws IOException {
    ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
    ObjectOutput output = createOutput(outputStream);
    Serialization serialization = ExtensionLoader.getExtensionLoader(Serialization.class).getExtension(channel.getUrl().getParameter(URLParamType.serialize.getName(), URLParamType.serialize.getValue()));
    byte flag = 0;
    output.writeLong(value.getProcessTime());
    if (value.getException() != null) {
        output.writeUTF(value.getException().getClass().getName());
        serialize(output, value.getException(), serialization);
        flag = MotanConstants.FLAG_RESPONSE_EXCEPTION;
    } else if (value.getValue() == null) {
        flag = MotanConstants.FLAG_RESPONSE_VOID;
    } else {
        output.writeUTF(value.getValue().getClass().getName());
        serialize(output, value.getValue(), serialization);
        // v2版本可以在response中添加attachment
        Map<String, String> attachments = value.getAttachments();
        if (attachments != null) {
            String signed = attachments.get(ATTACHMENT_SIGN);
            String unSigned = attachments.get(UN_ATTACHMENT_SIGN);
            // 除了attachment签名外不返回其他信息。
            attachments.clear();
            if (StringUtils.isNotBlank(signed)) {
                attachments.put(ATTACHMENT_SIGN, signed);
            }
            if (StringUtils.isNotBlank(unSigned)) {
                attachments.put(UN_ATTACHMENT_SIGN, unSigned);
            }
        }
        if (attachments != null && !attachments.isEmpty()) {
            // 需要回传附加数据
            addAttachment(output, attachments);
        } else {
            // empty attachments
            output.writeShort(0);
        }
        // v2版本flag
        flag = MotanConstants.FLAG_RESPONSE_ATTACHMENT;
    }
    output.flush();
    byte[] body = outputStream.toByteArray();
    output.close();
    Boolean usegz = channel.getUrl().getBooleanParameter(URLParamType.usegz.getName(), URLParamType.usegz.getBooleanValue());
    int minGzSize = channel.getUrl().getIntParameter(URLParamType.mingzSize.getName(), URLParamType.mingzSize.getIntValue());
    return encode(compress(body, usegz, minGzSize), flag, value.getRequestId());
}

Example 55 with ObjectOutput

use of java.io.ObjectOutput in project motan by weibocom.

the class DefaultRpcCodec method encodeRequest.

/**
     * request body 数据：
     * 
     * <pre>
	 * 
	 * 	 body:
	 * 
	 * 	 byte[] data :  
	 * 
	 * 			serialize(interface_name, method_name, method_param_desc, method_param_value, attachments_size, attachments_value) 
	 * 
	 *   method_param_desc:  for_each (string.append(method_param_interface_name))
	 * 
	 *   method_param_value: for_each (method_param_name, method_param_value)
	 * 
	 * 	 attachments_value:  for_each (attachment_name, attachment_value)
	 * 
	 * </pre>
     * 
     * @param request
     * @return
     * @throws IOException
     */
private byte[] encodeRequest(Channel channel, Request request) throws IOException {
    ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
    ObjectOutput output = createOutput(outputStream);
    output.writeUTF(request.getInterfaceName());
    output.writeUTF(request.getMethodName());
    output.writeUTF(request.getParamtersDesc());
    Serialization serialization = ExtensionLoader.getExtensionLoader(Serialization.class).getExtension(channel.getUrl().getParameter(URLParamType.serialize.getName(), URLParamType.serialize.getValue()));
    if (request.getArguments() != null && request.getArguments().length > 0) {
        for (Object obj : request.getArguments()) {
            serialize(output, obj, serialization);
        }
    }
    if (request.getAttachments() == null || request.getAttachments().isEmpty()) {
        // empty attachments
        output.writeInt(0);
    } else {
        output.writeInt(request.getAttachments().size());
        for (Map.Entry<String, String> entry : request.getAttachments().entrySet()) {
            output.writeUTF(entry.getKey());
            output.writeUTF(entry.getValue());
        }
    }
    output.flush();
    byte[] body = outputStream.toByteArray();
    byte flag = MotanConstants.FLAG_REQUEST;
    output.close();
    return encode(body, flag, request.getRequestId());
}