89 lines
2.6 KiB
Java
Executable File
89 lines
2.6 KiB
Java
Executable File
package envoy.server.net;
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import java.io.IOException;
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import java.util.Set;
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import java.util.logging.Logger;
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import java.util.stream.Stream;
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import com.jenkov.nioserver.*;
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import envoy.util.*;
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import envoy.server.data.Contact;
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/**
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* This class defines methods to send an object to a client.
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*
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* @author Kai S. K. Engelbart
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* @since Envoy Server Standalone v0.1-alpha
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*/
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public final class ObjectWriteProxy {
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private final WriteProxy writeProxy;
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private static final ConnectionManager connectionManager = ConnectionManager.getInstance();
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private static final Logger logger =
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EnvoyLog.getLogger(ObjectWriteProxy.class);
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/**
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* Creates an instance of {@link ObjectWriteProxy}.
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*
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* @param writeProxy the {@link WriteProxy} to write objects to another client
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* @since Envoy Server Standalone v0.1-alpha
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*/
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public ObjectWriteProxy(WriteProxy writeProxy) {
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this.writeProxy = writeProxy;
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}
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/**
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* @param recipientSocketID the socket id of the recipient
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* @param obj the object to return to the client
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* @throws RuntimeException if the serialization of the object failed (this is highly unlikely)
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* @since Envoy Server Standalone v0.1-alpha
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*/
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public void write(long recipientSocketID, Object obj) {
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// Create message targeted at the client
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final Message response = writeProxy.getMessage();
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response.socketId = recipientSocketID;
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logger.fine("Sending " + obj);
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try {
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// Serialize object to byte array
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final byte[] objBytes = SerializationUtils.writeToByteArray(obj);
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// Acquire object length in bytes
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final byte[] objLen = SerializationUtils.intToBytes(objBytes.length);
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response.writeToMessage(objLen);
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response.writeToMessage(objBytes);
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writeProxy.enqueue(response);
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} catch (IOException e) {
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throw new RuntimeException(e);
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}
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}
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/**
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* Sends an object to all contacts in a set that are online.
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*
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* @param contacts the contacts to send the object to
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* @param message the object to send
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* @since Envoy Server Standalone v0.1-beta
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*/
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public void writeToOnlineContacts(Set<? extends Contact> contacts, Object message) {
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writeToOnlineContacts(contacts.stream(), message);
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}
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/**
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* Sends an object to all contacts in a set that are online.
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*
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* @param contacts the contacts to send the object to
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* @param message the object to send
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* @since Envoy Server Standalone v0.1-beta
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*/
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public void writeToOnlineContacts(Stream<? extends Contact> contacts, Object message) {
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contacts.map(Contact::getID).filter(connectionManager::isOnline)
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.map(connectionManager::getSocketID).forEach(id -> write(id, message));
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}
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}
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