private void handleDisconnect() { Connection c = null; try { netCode = ois.readInt(); c = checkConnectionNetCode(); if (c != null && c.getState() == Connection.STATE_CONNECTED) { oos.writeInt(DISCONNECTED); oos.flush(); System.out.println("->DISCONNECTED"); // $NON-NLS-1$ c.setState(Connection.STATE_DISCONNECTED); } else { System.out.println("->NOT_CONNECTED"); // $NON-NLS-1$ oos.writeInt(NOT_CONNECTED); oos.flush(); } } catch (IOException e) { System.out.println("handleDisconnect: " + e.getMessage()); // $NON-NLS-1$ if (c != null) { c.setState(Connection.STATE_DISCONNECTED); System.out.println( "Connection closed with " + //$NON-NLS-1$ c.getRemoteAddress() + ":" + c.getRemotePort()); // $NON-NLS-1$ } } }
private void handleSendCode() { Connection c = null; GeneticCode code; try { netCode = ois.readInt(); c = checkConnectionNetCode(); if (c != null && c.getState() == Connection.STATE_CONNECTED) { oos.writeInt(WAITING_CODE); oos.flush(); System.out.println("->WAITING_CODE"); // $NON-NLS-1$ code = (GeneticCode) ois.readObject(); System.out.println("Genetic code"); // $NON-NLS-1$ oos.writeInt(CODE_RECEIVED); oos.flush(); System.out.println("->CODE_RECEIVED"); // $NON-NLS-1$ c.getInCorridor().receiveOrganism(code); } else { System.out.println("->NOT_CONNECTED"); // $NON-NLS-1$ oos.writeInt(NOT_CONNECTED); oos.flush(); } } catch (IOException e) { System.out.println("handleSendCode: " + e.getMessage()); // $NON-NLS-1$ if (c != null) { c.setState(Connection.STATE_DISCONNECTED); System.out.println( "Connection closed with " + c.getRemoteAddress() + //$NON-NLS-1$ ":" + c.getRemotePort()); // $NON-NLS-1$ } } catch (ClassNotFoundException e) { System.out.println("handleSendCode: " + e.getMessage()); // $NON-NLS-1$ if (c != null) { c.setState(Connection.STATE_DISCONNECTED); System.out.println( "Connection closed with " + c.getRemoteAddress() + //$NON-NLS-1$ ":" + c.getRemotePort()); // $NON-NLS-1$ } } }
public void closeServer() { isActive = false; // Remove all connections synchronized (connections) { for (Connection c : connections) { c.send(DISCONNECT); c.setState(DISCONNECTED); } } connections = Collections.synchronizedList(new ArrayList<Connection>()); }
@SuppressWarnings("unchecked") @Override public void onConnected(Connection con) throws IOException { con.setState(Connection.State.connecting); String info = con.getDirection() == Connection.Direction.in ? "remote peer connected to me " + con : " connected to remote peer " + con; LOGGER.info(info); handler.onConnected(con); }
public Connection nextConnectionState(URI connectionURI, ConnectionEventType connectionEventType) throws NoSuchConnectionException, IllegalMessageForConnectionStateException { if (connectionURI == null) throw new IllegalArgumentException("connectionURI is not set"); // load connection, checking if it exists Connection con = DataAccessUtils.loadConnection(connectionRepository, connectionURI); // perform state transit ConnectionState nextState = performStateTransit(con, connectionEventType); // set new state and save in the db con.setState(nextState); // save in the db return connectionRepository.saveAndFlush(con); }
/** * Creates a new Connection object. Expects <> won:hasFacet [FACET] in the RDF content, will throw * exception if it's not there. * * @param needURI * @param otherNeedURI * @param otherConnectionURI * @param content * @param connectionState * @param connectionEventType * @return * @throws NoSuchNeedException * @throws IllegalMessageForNeedStateException * @throws ConnectionAlreadyExistsException */ public Connection createConnection( final URI needURI, final URI otherNeedURI, final URI otherConnectionURI, final Model content, final ConnectionState connectionState, final ConnectionEventType connectionEventType) throws NoSuchNeedException, IllegalMessageForNeedStateException, ConnectionAlreadyExistsException { if (needURI == null) throw new IllegalArgumentException("needURI is not set"); if (otherNeedURI == null) throw new IllegalArgumentException("otherNeedURI is not set"); if (needURI.equals(otherNeedURI)) throw new IllegalArgumentException("needURI and otherNeedURI are the same"); // Load need (throws exception if not found) Need need = DataAccessUtils.loadNeed(needRepository, needURI); if (!isNeedActive(need)) throw new IllegalMessageForNeedStateException( needURI, connectionEventType.name(), need.getState()); URI facetURI = getFacet(content); if (facetURI == null) throw new IllegalArgumentException( "at least one RDF node must be of type won:" + WON.HAS_FACET.getLocalName()); // TODO: create a proper exception if a facet is not supported by a need if (facetRepository.findByNeedURIAndTypeURI(needURI, facetURI).isEmpty()) throw new RuntimeException("Facet is not supported by Need: " + facetURI); List<Connection> connections = connectionRepository.findByNeedURIAndRemoteNeedURI(needURI, otherNeedURI); Connection con = getConnection(connections, facetURI, connectionEventType); if (con == null) { /* Create connection */ con = new Connection(); con.setNeedURI(needURI); con.setState(connectionState); con.setRemoteNeedURI(otherNeedURI); con.setRemoteConnectionURI(otherConnectionURI); con.setTypeURI(facetURI); // save connection (this creates a new id) con = connectionRepository.saveAndFlush(con); // create and set new uri con.setConnectionURI(URIService.createConnectionURI(con)); con = connectionRepository.saveAndFlush(con); // TODO: do we save the connection content? where? as a chat content? } return con; }
private void handleConnect() { try { int program_version = ois.readInt(); port = ois.readInt(); address = listenSocket.getInetAddress(); netCode = ois.readInt(); Connection c = checkConnectionNetCode(); if (c != null) { oos.writeInt(ALREADY_CONNECTED); oos.flush(); System.out.println("->ALREADY_CONNECTED"); // $NON-NLS-1$ } else { if (isAcceptingConnections()) { if (connections.size() < Utils.getMAX_CONNECTIONS()) { if (Utils.VERSION == program_version) { Connection newConnection = newConnection(); if (newConnection != null) { oos.writeInt(CONNECTED); newConnection.setState(Connection.STATE_CONNECTED); System.out.println("->CONNECTED"); // $NON-NLS-1$ } else { oos.writeInt(ALREADY_CONNECTED); System.out.println("->ALREADY_CONNECTED"); // $NON-NLS-1$ } oos.flush(); } else { oos.writeInt(INCOMPATIBLE_PROGRAM_VERSION); oos.flush(); System.out.println("->INCOMPATIBLE_PROGRAM_VERSION"); // $NON-NLS-1$ } } else { oos.writeInt(TOO_MANY_CONNECTIONS); oos.flush(); System.out.println("->TOO_MANY_CONNECTIONS"); // $NON-NLS-1$ } } else { oos.writeInt(NOT_ACCEPTING_CONNECTIONS); oos.flush(); System.out.println("->NOT_ACCEPTING_CONNECTIONS"); // $NON-NLS-1$ } } } catch (IOException ex) { System.out.println(ex.getMessage()); } }
public Connection getConnection( List<Connection> connections, URI facetURI, ConnectionEventType eventType) throws ConnectionAlreadyExistsException { Connection con = null; for (Connection c : connections) { // TODO: check remote need type as well or create GroupMemberFacet if (facetURI.equals(c.getTypeURI())) con = c; } /** * check if there already exists a connection between those two we have multiple options: a) no * connection exists -> create new b) a connection exists in state CONNECTED -> error message c) * a connection exists in state REQUEST_SENT. The call must be a duplicate (or re-sent after the * remote end hasn't replied for some time) -> error message d) a connection exists in state * REQUEST_RECEIVED. The remote end tried to connect before we did. -> error message e) a * connection exists in state CLOSED -> create new */ // TODO: impose unique constraint on connections if (con != null) { if (con.getState() == ConnectionState.CONNECTED || con.getState() == ConnectionState.REQUEST_SENT) throw new ConnectionAlreadyExistsException( con.getConnectionURI(), con.getNeedURI(), con.getRemoteNeedURI()); /*if(!eventType.isMessageAllowed(con.getState())){ throw new ConnectionAlreadyExistsException(con.getConnectionURI(), con.getNeedURI(), con.getRemoteNeedURI()); }*/ else { // TODO: Move this to the transition() - Method in ConnectionState con.setState(con.getState().transit(eventType)); con = connectionRepository.saveAndFlush(con); } } return con; }