diff --git a/src/main/java/envoy/client/Client.java b/src/main/java/envoy/client/Client.java index 522d44f..5b9a2b8 100644 --- a/src/main/java/envoy/client/Client.java +++ b/src/main/java/envoy/client/Client.java @@ -1,5 +1,7 @@ package envoy.client; +import java.util.logging.Logger; + import javax.ws.rs.client.ClientBuilder; import javax.ws.rs.client.Entity; import javax.ws.rs.client.WebTarget; @@ -28,16 +30,18 @@ public class Client { private Config config; private User sender, recipient; + private static final Logger logger = Logger.getLogger(Client.class.getSimpleName()); + public Client(Config config, String username) { this.config = config; sender = getUser(username); - System.out.println("ID: " + sender.getID()); + + logger.info("ID: " + sender.getID()); } private R post(String uri, T body, Class responseBodyClass) { javax.ws.rs.client.Client client = ClientBuilder.newClient(); WebTarget target = client.target(uri); - Response response = target.request().post(Entity.entity(body, "application/xml")); R responseBody = response.readEntity(responseBodyClass); response.close(); @@ -92,7 +96,7 @@ public class Client { if (returnSenderSync.getUsers().size() == 1) { returnSender = returnSenderSync.getUsers().get(0); } else { - System.out.println("ERROR exiting..."); + logger.warning("ERROR exiting..."); } return returnSender; diff --git a/src/main/java/envoy/client/LocalDB.java b/src/main/java/envoy/client/LocalDB.java index 3cc96a2..b1668ad 100644 --- a/src/main/java/envoy/client/LocalDB.java +++ b/src/main/java/envoy/client/LocalDB.java @@ -1,293 +1,305 @@ -package envoy.client; - -import java.io.File; -import java.io.FileInputStream; -import java.io.FileOutputStream; -import java.io.IOException; -import java.io.ObjectInputStream; -import java.io.ObjectOutputStream; -import java.time.Instant; -import java.util.ArrayList; -import java.util.List; - -import javax.xml.datatype.DatatypeConfigurationException; -import javax.xml.datatype.DatatypeFactory; - -import envoy.exception.EnvoyException; -import envoy.schema.Message; -import envoy.schema.Message.Metadata.MessageState; -import envoy.schema.ObjectFactory; -import envoy.schema.Sync; -import envoy.schema.User; - -/** - * Project: envoy-client
- * File: LocalDB.java
- * Created: 27.10.2019
- * - * @author Kai S. K. Engelbart - * @author Maximilian Käfer - * @since Envoy v0.1-alpha - */ -public class LocalDB { - - private File localDB; - private User sender; - private List chats = new ArrayList<>(); - private ObjectFactory objectFactory = new ObjectFactory(); - private DatatypeFactory datatypeFactory; - - private Sync unreadMessagesSync = objectFactory.createSync(); - private Sync sync = objectFactory.createSync(); - private Sync readMessages = objectFactory.createSync(); - - /** - * Constructs an empty local database. - * - * @param client the user that is logged in with this client - * @since Envoy v0.1-alpha - */ - - public LocalDB(User sender) { - this.sender = sender; - try { - datatypeFactory = DatatypeFactory.newInstance(); - } catch (DatatypeConfigurationException e) { - e.printStackTrace(); - } - } - - /** - * Initializes the local database and fills it with values - * if the user has already sent or received messages. - * - * @param localDBDir the directory where we wish to save/load the database from. - * @throws EnvoyException if the directory selected is not an actual directory. - * @since Envoy v0.1-alpha - */ - public void initializeDBFile(File localDBDir) throws EnvoyException { - if (localDBDir.exists() && !localDBDir.isDirectory()) - throw new EnvoyException(String.format("LocalDBDir '%s' is not a directory!", localDBDir.getAbsolutePath())); - localDB = new File(localDBDir, sender.getID() + ".db"); - if (localDB.exists()) loadFromLocalDB(); - } - - /** - * Saves the database into a file for future use. - * - * @throws IOException if something went wrong during saving - * @since Envoy v0.1-alpha - */ - public void saveToLocalDB() { - try { - localDB.getParentFile().mkdirs(); - localDB.createNewFile(); - } catch (IOException e) { - e.printStackTrace(); - System.err.println("unable to save the messages"); - } - try (ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(localDB))) { - out.writeObject(chats); - } catch (IOException ex) { - ex.printStackTrace(); - System.err.println("unable to save the messages"); - } - } - - /** - * Loads all chats saved by Envoy for the client user. - * - * @throws EnvoyException if something fails while loading. - * @since Envoy v0.1-alpha - */ - @SuppressWarnings("unchecked") - private void loadFromLocalDB() throws EnvoyException { - try (ObjectInputStream in = new ObjectInputStream(new FileInputStream(localDB))) { - Object obj = in.readObject(); - if (obj instanceof ArrayList) chats = (ArrayList) obj; - } catch (ClassNotFoundException | IOException e) { - throw new EnvoyException(e); - } - } - - /** - * Creates a {@link Message} object serializable to XML. - * - * @param textContent The content (text) of the message - * @return prepared {@link Message} object - */ - public Message createMessage(String textContent, User recipient) { - Message.Metadata metaData = objectFactory.createMessageMetadata(); - metaData.setSender(sender.getID()); - metaData.setRecipient(recipient.getID()); - metaData.setState(MessageState.WAITING); - metaData.setDate(datatypeFactory.newXMLGregorianCalendar(Instant.now().toString())); - - Message.Content content = objectFactory.createMessageContent(); - content.setType("text"); - content.setText(textContent); - - Message message = objectFactory.createMessage(); - message.setMetadata(metaData); - message.getContent().add(content); - - return message; - } - - public Sync fillSync(long userId) { - addWaitingMessagesToSync(); - - sync.getMessages().addAll(readMessages.getMessages()); - readMessages.getMessages().clear(); - - System.out.println(sync.getMessages().size()); - return sync; - } - - public void applySync(Sync returnSync) { - for (int i = 0; i < returnSync.getMessages().size(); i++) { - if (returnSync.getMessages().get(i).getMetadata().getMessageId() != 0 - && returnSync.getMessages().get(i).getMetadata().getState() == MessageState.SENT) { - // Update Local Messages with State WAITING (add Message ID and change State to - // SENT) - for (int j = 0; j < sync.getMessages().size(); j++) { - if (j == i) { - sync.getMessages().get(j).getMetadata().setMessageId(returnSync.getMessages().get(j).getMetadata().getMessageId()); - sync.getMessages().get(j).getMetadata().setState(returnSync.getMessages().get(j).getMetadata().getState()); - } - } - } - if (returnSync.getMessages().get(i).getMetadata().getMessageId() != 0 && returnSync.getMessages().get(i).getMetadata().getSender() != 0 - && returnSync.getMessages().get(i).getMetadata().getState() == MessageState.RECEIVED) { - // these are the unread Messages from the server - unreadMessagesSync.getMessages().add(returnSync.getMessages().get(i)); - } - - if (returnSync.getMessages().get(i).getMetadata().getMessageId() != 0 && returnSync.getMessages().get(i).getMetadata().getSender() == 0 - && returnSync.getMessages().get(i).getMetadata().getState() == MessageState.RECEIVED) { - // Update Messages in localDB to state RECEIVED - for (int j = 0; j < getChats().size(); j++) { - if (getChats().get(j).getRecipient().getID() == returnSync.getMessages().get(i).getMetadata().getRecipient()) { - for (int k = 0; k < getChats().get(j).getModel().getSize(); k++) { - if (getChats().get(j).getModel().get(k).getMetadata().getMessageId() == returnSync.getMessages() - .get(i) - .getMetadata() - .getMessageId()) { - // Update Message in LocalDB - getChats().get(j).getModel().get(k).getMetadata().setState(returnSync.getMessages().get(j).getMetadata().getState()); - } - } - } - } - - } - - if (returnSync.getMessages().get(i).getMetadata().getMessageId() != 0 - && returnSync.getMessages().get(i).getMetadata().getState() == MessageState.READ) { - // Update local Messages to state READ - System.out.println("Message with ID: " + returnSync.getMessages().get(i).getMetadata().getMessageId() - + "was initialized to be set to READ in localDB."); - for (int j = 0; j < getChats().size(); j++) { - if (getChats().get(j).getRecipient().getID() == returnSync.getMessages().get(i).getMetadata().getRecipient()) { - System.out.println("Chat with: " + getChats().get(j).getRecipient().getID() + "was selected."); - for (int k = 0; k < getChats().get(j).getModel().getSize(); k++) { - if (getChats().get(j).getModel().get(k).getMetadata().getMessageId() == returnSync.getMessages() - .get(i) - .getMetadata() - .getMessageId()) { - System.out.println( - "Message with ID: " + getChats().get(j).getModel().get(k).getMetadata().getMessageId() + "was selected."); - getChats().get(j).getModel().get(k).getMetadata().setState(returnSync.getMessages().get(i).getMetadata().getState()); - System.out - .println("Message State is now: " + getChats().get(j).getModel().get(k).getMetadata().getState().toString()); - } - } - } - } - } - } - - // Updating UserStatus of all users in LocalDB - for (int j = 0; j < returnSync.getUsers().size(); j++) { - for (int k = 0; k < getChats().size(); k++) { - if (getChats().get(k).getRecipient().getID() == returnSync.getUsers().get(j).getID()) { - - getChats().get(k).getRecipient().setStatus(returnSync.getUsers().get(j).getStatus()); - System.out.println(getChats().get(k).getRecipient().getStatus().toString()); - } - } - } - - sync.getMessages().clear(); - sync.getUsers().clear(); - } - - /** - * Adds the unread messages returned from the server in the latest sync to the - * right chats in the LocalDB. - * - * @param localDB - * @since Envoy v0.1-alpha - */ - public void addUnreadMessagesToLocalDB() { - Sync unreadMessages = unreadMessagesSync; - for (int i = 0; i < unreadMessages.getMessages().size(); i++) - for (int j = 0; j < getChats().size(); j++) - if (getChats().get(j).getRecipient().getID() == unreadMessages.getMessages().get(i).getMetadata().getSender()) { - getChats().get(j).appendMessage(unreadMessages.getMessages().get(i)); - } - } - - /** - * Changes all messages with state {@code RECEIVED} of a specific chat to state - * {@code READ}. - *
- * Adds these messages to the {@code readMessages} {@link Sync} object. - * - * @param currentChat - * @since Envoy v0.1-alpha - */ - public void setMessagesToRead(Chat currentChat) { - for (int i = currentChat.getModel().size() - 1; i >= 0; --i) - if (currentChat.getModel().get(i).getMetadata().getRecipient() != currentChat.getRecipient().getID()) - if (currentChat.getModel().get(i).getMetadata().getState() == MessageState.RECEIVED) { - currentChat.getModel().get(i).getMetadata().setState(MessageState.READ); - readMessages.getMessages().add(currentChat.getModel().get(i)); - } else break; - } - - /** - * Adds all messages with state {@code WAITING} from the {@link LocalDB} to the - * {@link Sync} object. - * - * @since Envoy v0.1-alpha - */ - private void addWaitingMessagesToSync() { - for (Chat chat : getChats()) - for (int i = 0; i < chat.getModel().size(); i++) - if (chat.getModel().get(i).getMetadata().getState() == MessageState.WAITING) { - System.out.println("Got Waiting Message"); - sync.getMessages().add(chat.getModel().get(i)); - } - } - - /** - * Clears the {@code unreadMessagesSync} {@link Sync} object. - * - * @since Envoy v0.1-alpha - */ - public void clearUnreadMessagesSync() { unreadMessagesSync.getMessages().clear(); } - - /** - * @return all saves {@link Chat} objects that list the client user as the - * client - * @since Envoy v0.1-alpha - **/ - public List getChats() { return chats; } - - /** - * @return the {@link User} who initialized the local database - * @since Envoy v0.1-alpha - */ - public User getUser() { return sender; } -} +package envoy.client; + +import java.io.File; +import java.io.FileInputStream; +import java.io.FileOutputStream; +import java.io.IOException; +import java.io.ObjectInputStream; +import java.io.ObjectOutputStream; +import java.time.Instant; +import java.util.ArrayList; +import java.util.List; +import java.util.logging.Logger; + +import javax.xml.datatype.DatatypeConfigurationException; +import javax.xml.datatype.DatatypeFactory; + +import envoy.exception.EnvoyException; +import envoy.schema.Message; +import envoy.schema.Message.Metadata.MessageState; +import envoy.schema.ObjectFactory; +import envoy.schema.Sync; +import envoy.schema.User; + +/** + * Project: envoy-client
+ * File: LocalDB.java
+ * Created: 27.10.2019
+ * + * @author Kai S. K. Engelbart + * @author Maximilian Käfer + * @since Envoy v0.1-alpha + */ +public class LocalDB { + + private File localDB; + private User sender; + private List chats = new ArrayList<>(); + private ObjectFactory objectFactory = new ObjectFactory(); + private DatatypeFactory datatypeFactory; + + private static final Logger logger = Logger.getLogger(LocalDB.class.getSimpleName()); + + private Sync unreadMessagesSync = objectFactory.createSync(); + private Sync sync = objectFactory.createSync(); + private Sync readMessages = objectFactory.createSync(); + + /** + * Constructs an empty local database. + * + * @param sender the user that is logged in with this client + * @since Envoy v0.1-alpha + */ + public LocalDB(User sender) { + this.sender = sender; + try { + datatypeFactory = DatatypeFactory.newInstance(); + } catch (DatatypeConfigurationException e) { + e.printStackTrace(); + } + } + + /** + * Initializes the local database and fills it with values + * if the user has already sent or received messages. + * + * @param localDBDir the directory where we wish to save/load the database from. + * @throws EnvoyException if the directory selected is not an actual directory. + * @since Envoy v0.1-alpha + */ + public void initializeDBFile(File localDBDir) throws EnvoyException { + if (localDBDir.exists() && !localDBDir.isDirectory()) + throw new EnvoyException(String.format("LocalDBDir '%s' is not a directory!", localDBDir.getAbsolutePath())); + localDB = new File(localDBDir, sender.getID() + ".db"); + if (localDB.exists()) loadFromLocalDB(); + } + + /** + * Saves the database into a file for future use. + * + * @throws IOException if something went wrong during saving + * @since Envoy v0.1-alpha + */ + public void saveToLocalDB() { + try { + localDB.getParentFile().mkdirs(); + localDB.createNewFile(); + } catch (IOException e) { + e.printStackTrace(); + logger.warning("unable to save the messages"); + } + try (ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(localDB))) { + out.writeObject(chats); + } catch (IOException ex) { + ex.printStackTrace(); + logger.warning("unable to save the messages"); + } + } + + /** + * Loads all chats saved by Envoy for the client user. + * + * @throws EnvoyException if something fails while loading. + * @since Envoy v0.1-alpha + */ + @SuppressWarnings("unchecked") + private void loadFromLocalDB() throws EnvoyException { + try (ObjectInputStream in = new ObjectInputStream(new FileInputStream(localDB))) { + Object obj = in.readObject(); + if (obj instanceof ArrayList) chats = (ArrayList) obj; + } catch (ClassNotFoundException | IOException e) { + throw new EnvoyException(e); + } + } + + /** + * Creates a {@link Message} object serializable to XML. + * + * @param textContent The content (text) of the message + * @param recipient The recipient of the message + * @return prepared {@link Message} object + * @since Envoy v0.1-alpha + */ + public Message createMessage(String textContent, User recipient) { + Message.Metadata metaData = objectFactory.createMessageMetadata(); + metaData.setSender(sender.getID()); + metaData.setRecipient(recipient.getID()); + metaData.setState(MessageState.WAITING); + metaData.setDate(datatypeFactory.newXMLGregorianCalendar(Instant.now().toString())); + + Message.Content content = objectFactory.createMessageContent(); + content.setType("text"); + content.setText(textContent); + + Message message = objectFactory.createMessage(); + message.setMetadata(metaData); + message.getContent().add(content); + + return message; + } + + public Sync fillSync(long userId) { + addWaitingMessagesToSync(); + + sync.getMessages().addAll(readMessages.getMessages()); + readMessages.getMessages().clear(); + + logger.info(String.format("Filled sync with %d messages.", sync.getMessages().size())); + return sync; + } + + public void applySync(Sync returnSync) { + for (int i = 0; i < returnSync.getMessages().size(); i++) { + if (returnSync.getMessages().get(i).getMetadata().getMessageId() != 0 + && returnSync.getMessages().get(i).getMetadata().getState() == MessageState.SENT) { + // Update Local Messages with State WAITING (add Message ID and change State to + // SENT) + for (int j = 0; j < sync.getMessages().size(); j++) { + if (j == i) { + sync.getMessages().get(j).getMetadata().setMessageId(returnSync.getMessages().get(j).getMetadata().getMessageId()); + sync.getMessages().get(j).getMetadata().setState(returnSync.getMessages().get(j).getMetadata().getState()); + } + } + } + if (returnSync.getMessages().get(i).getMetadata().getMessageId() != 0 && returnSync.getMessages().get(i).getMetadata().getSender() != 0 + && returnSync.getMessages().get(i).getMetadata().getState() == MessageState.RECEIVED) { + // these are the unread Messages from the server + unreadMessagesSync.getMessages().add(returnSync.getMessages().get(i)); + } + + if (returnSync.getMessages().get(i).getMetadata().getMessageId() != 0 && returnSync.getMessages().get(i).getMetadata().getSender() == 0 + && returnSync.getMessages().get(i).getMetadata().getState() == MessageState.RECEIVED) { + // Update Messages in localDB to state RECEIVED + for (int j = 0; j < getChats().size(); j++) { + if (getChats().get(j).getRecipient().getID() == returnSync.getMessages().get(i).getMetadata().getRecipient()) { + for (int k = 0; k < getChats().get(j).getModel().getSize(); k++) { + if (getChats().get(j).getModel().get(k).getMetadata().getMessageId() == returnSync.getMessages() + .get(i) + .getMetadata() + .getMessageId()) { + // Update Message in LocalDB + getChats().get(j).getModel().get(k).getMetadata().setState(returnSync.getMessages().get(j).getMetadata().getState()); + } + } + } + } + + } + + if (returnSync.getMessages().get(i).getMetadata().getMessageId() != 0 + && returnSync.getMessages().get(i).getMetadata().getState() == MessageState.READ) { + // Update local Messages to state READ + logger.info("Message with ID: " + returnSync.getMessages().get(i).getMetadata().getMessageId() + + "was initialized to be set to READ in localDB."); + for (int j = 0; j < getChats().size(); j++) { + if (getChats().get(j) + .getRecipient() + .getID() == returnSync.getMessages().get(i).getMetadata().getRecipient()) { + logger.info("Chat with: " + getChats().get(j).getRecipient().getID() + "was selected."); + for (int k = 0; k < getChats().get(j).getModel().getSize(); k++) { + if (getChats().get(j).getModel().get(k).getMetadata().getMessageId() == returnSync.getMessages() + .get(i) + .getMetadata() + .getMessageId()) { + logger.info("Message with ID: " + + getChats().get(j).getModel().get(k).getMetadata().getMessageId() + + "was selected."); + getChats().get(j) + .getModel() + .get(k) + .getMetadata() + .setState(returnSync.getMessages().get(i).getMetadata().getState()); + logger.info("Message State is now: " + + getChats().get(j).getModel().get(k).getMetadata().getState().toString()); + } + } + } + } + } + } + + // Updating UserStatus of all users in LocalDB + for (int j = 0; j < returnSync.getUsers().size(); j++) { + for (int k = 0; k < getChats().size(); k++) { + if (getChats().get(k).getRecipient().getID() == returnSync.getUsers().get(j).getID()) { + + getChats().get(k).getRecipient().setStatus(returnSync.getUsers().get(j).getStatus()); + logger.info(getChats().get(k).getRecipient().getStatus().toString()); + } + } + } + + sync.getMessages().clear(); + sync.getUsers().clear(); + } + + /** + * Adds the unread messages returned from the server in the latest sync to the + * right chats in the LocalDB. + * + * @param localDB + * @since Envoy v0.1-alpha + */ + public void addUnreadMessagesToLocalDB() { + Sync unreadMessages = unreadMessagesSync; + for (int i = 0; i < unreadMessages.getMessages().size(); i++) + for (int j = 0; j < getChats().size(); j++) + if (getChats().get(j).getRecipient().getID() == unreadMessages.getMessages().get(i).getMetadata().getSender()) { + getChats().get(j).appendMessage(unreadMessages.getMessages().get(i)); + } + } + + /** + * Changes all messages with state {@code RECEIVED} of a specific chat to state + * {@code READ}. + *
+ * Adds these messages to the {@code readMessages} {@link Sync} object. + * + * @param currentChat + * @since Envoy v0.1-alpha + */ + public void setMessagesToRead(Chat currentChat) { + for (int i = currentChat.getModel().size() - 1; i >= 0; --i) + if (currentChat.getModel().get(i).getMetadata().getRecipient() != currentChat.getRecipient().getID()) + if (currentChat.getModel().get(i).getMetadata().getState() == MessageState.RECEIVED) { + currentChat.getModel().get(i).getMetadata().setState(MessageState.READ); + readMessages.getMessages().add(currentChat.getModel().get(i)); + } else break; + } + + /** + * Adds all messages with state {@code WAITING} from the {@link LocalDB} to the + * {@link Sync} object. + * + * @since Envoy v0.1-alpha + */ + private void addWaitingMessagesToSync() { + for (Chat chat : getChats()) + for (int i = 0; i < chat.getModel().size(); i++) + if (chat.getModel().get(i).getMetadata().getState() == MessageState.WAITING) { + // addMessageToSync(localDB.getChats().get(i).getModel().get(j)); + logger.info("Got Waiting Message"); + sync.getMessages().add(chat.getModel().get(i)); + } + } + + /** + * Clears the {@code unreadMessagesSync} {@link Sync} object. + * + * @since Envoy v0.1-alpha + */ + public void clearUnreadMessagesSync() { unreadMessagesSync.getMessages().clear(); } + + /** + * @return all saves {@link Chat} objects that list the client user as the + * client + * @since Envoy v0.1-alpha + **/ + public List getChats() { return chats; } + + /** + * @return the {@link User} who initialized the local database + * @since Envoy v0.1-alpha + */ + public User getUser() { return sender; } +} diff --git a/src/main/java/envoy/client/ui/ChatWindow.java b/src/main/java/envoy/client/ui/ChatWindow.java index 32b024b..39a907f 100644 --- a/src/main/java/envoy/client/ui/ChatWindow.java +++ b/src/main/java/envoy/client/ui/ChatWindow.java @@ -10,6 +10,7 @@ import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; +import java.util.logging.Logger; import javax.swing.DefaultListModel; import javax.swing.JButton; @@ -56,6 +57,8 @@ public class ChatWindow extends JFrame { private Chat currentChat; private JTextArea messageEnterTextArea; + + private static final Logger logger = Logger.getLogger(ChatWindow.class.getSimpleName()); public ChatWindow(Client client, LocalDB localDB) { this.client = client; @@ -186,7 +189,7 @@ public class ChatWindow extends JFrame { SettingsScreen.open(localDB.getUser().getName()); } catch (Exception e) { SettingsScreen.open(); - System.err.println("An error occured while opening the settings screen: " + e); + logger.warning("An error occured while opening the settings screen: " + e); e.printStackTrace(); } }); diff --git a/src/main/java/envoy/client/ui/Startup.java b/src/main/java/envoy/client/ui/Startup.java index 5a2d92f..4d6a198 100644 --- a/src/main/java/envoy/client/ui/Startup.java +++ b/src/main/java/envoy/client/ui/Startup.java @@ -3,6 +3,8 @@ package envoy.client.ui; import java.awt.EventQueue; import java.io.IOException; import java.util.Properties; +import java.util.logging.Level; +import java.util.logging.Logger; import javax.swing.JOptionPane; @@ -24,7 +26,11 @@ import envoy.exception.EnvoyException; */ public class Startup { + private static final Logger logger = Logger.getLogger(Client.class.getSimpleName()); + public static void main(String[] args) { + logger.setLevel(Level.ALL); + Config config = Config.getInstance(); // Load the configuration from client.properties first @@ -42,6 +48,7 @@ public class Startup { config.load(args); if (!config.isInitialized()) { + logger.warning("Server or port are not defined. Exiting..."); JOptionPane.showMessageDialog(null, "Error loading configuration values.", "Configuration error", JOptionPane.ERROR_MESSAGE); System.exit(1); @@ -49,7 +56,7 @@ public class Startup { String userName = JOptionPane.showInputDialog("Please enter your username"); if (userName == null || userName.isEmpty()) { - System.err.println("User name is not set or empty. Exiting..."); + logger.warning("User name is not set or empty. Exiting..."); System.exit(1); } Client client = new Client(config, userName);