75 lines
2.3 KiB
Java
Executable File
75 lines
2.3 KiB
Java
Executable File
package envoy.server.processors;
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import static envoy.server.Startup.config;
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import java.util.logging.*;
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import javax.persistence.EntityExistsException;
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import envoy.data.Message;
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import envoy.event.*;
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import envoy.util.EnvoyLog;
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import envoy.server.data.PersistenceManager;
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import envoy.server.net.*;
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import envoy.server.util.UserAuthenticationUtil;
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/**
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* This {@link ObjectProcessor} handles incoming {@link Message}s.
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*
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* @author Kai S. K. Engelbart
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* @author Maximilian Käfer
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* @since Envoy Server Standalone v0.1-alpha
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*/
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public final class MessageProcessor implements ObjectProcessor<Message> {
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private static final PersistenceManager persistenceManager = PersistenceManager.getInstance();
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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(MessageProcessor.class);
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@Override
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public void process(Message message, long socketID, ObjectWriteProxy writeProxy) {
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// Check whether the message has the expected parameters
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if (!UserAuthenticationUtil.isExpectedUser(message.getSenderID(), socketID)
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|| persistenceManager.getContactByID(message.getRecipientID()) == null) {
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logger.log(Level.INFO,
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"Received a message with invalid parameters");
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return;
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}
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message.nextStatus();
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// Convert to server message
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final var serverMessage = new envoy.server.data.Message(message);
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// Telling the server to reload the message without the attachment
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if (!config.isAttachmentSupportEnabled() && message.hasAttachment()) {
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message = serverMessage.toCommon();
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writeProxy.write(socketID, new NoAttachments());
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}
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try {
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// Persist the message
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persistenceManager.addMessage(serverMessage);
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// Send the message to the recipient if online
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if (connectionManager.isOnline(message.getRecipientID())) {
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writeProxy.write(connectionManager.getSocketID(message.getRecipientID()), message);
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// Increment status
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message.nextStatus();
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serverMessage.received();
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persistenceManager.updateMessage(serverMessage);
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// Notify the sender about the delivery
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// Note that the exact time stamp might differ slightly
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writeProxy.write(socketID, new MessageStatusChange(message));
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}
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} catch (final EntityExistsException e) {
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logger.log(Level.WARNING, "Received " + message + " with an ID that already exists!");
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}
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}
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}
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