Merge pull request #32 from informatik-ag-ngl/f/logging

Added proper logging
This commit is contained in:
Kai S. K. Engelbart 2019-11-29 21:06:56 +01:00 committed by GitHub
commit 93f5c79a32
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4 changed files with 324 additions and 298 deletions

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@ -1,5 +1,7 @@
package envoy.client; package envoy.client;
import java.util.logging.Logger;
import javax.ws.rs.client.ClientBuilder; import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.client.Entity; import javax.ws.rs.client.Entity;
import javax.ws.rs.client.WebTarget; import javax.ws.rs.client.WebTarget;
@ -28,16 +30,18 @@ public class Client {
private Config config; private Config config;
private User sender, recipient; private User sender, recipient;
private static final Logger logger = Logger.getLogger(Client.class.getSimpleName());
public Client(Config config, String username) { public Client(Config config, String username) {
this.config = config; this.config = config;
sender = getUser(username); sender = getUser(username);
System.out.println("ID: " + sender.getID());
logger.info("ID: " + sender.getID());
} }
private <T, R> R post(String uri, T body, Class<R> responseBodyClass) { private <T, R> R post(String uri, T body, Class<R> responseBodyClass) {
javax.ws.rs.client.Client client = ClientBuilder.newClient(); javax.ws.rs.client.Client client = ClientBuilder.newClient();
WebTarget target = client.target(uri); WebTarget target = client.target(uri);
Response response = target.request().post(Entity.entity(body, "application/xml")); Response response = target.request().post(Entity.entity(body, "application/xml"));
R responseBody = response.readEntity(responseBodyClass); R responseBody = response.readEntity(responseBodyClass);
response.close(); response.close();
@ -92,7 +96,7 @@ public class Client {
if (returnSenderSync.getUsers().size() == 1) { if (returnSenderSync.getUsers().size() == 1) {
returnSender = returnSenderSync.getUsers().get(0); returnSender = returnSenderSync.getUsers().get(0);
} else { } else {
System.out.println("ERROR exiting..."); logger.warning("ERROR exiting...");
} }
return returnSender; return returnSender;

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@ -1,293 +1,305 @@
package envoy.client; package envoy.client;
import java.io.File; import java.io.File;
import java.io.FileInputStream; import java.io.FileInputStream;
import java.io.FileOutputStream; import java.io.FileOutputStream;
import java.io.IOException; import java.io.IOException;
import java.io.ObjectInputStream; import java.io.ObjectInputStream;
import java.io.ObjectOutputStream; import java.io.ObjectOutputStream;
import java.time.Instant; import java.time.Instant;
import java.util.ArrayList; import java.util.ArrayList;
import java.util.List; import java.util.List;
import java.util.logging.Logger;
import javax.xml.datatype.DatatypeConfigurationException;
import javax.xml.datatype.DatatypeFactory; import javax.xml.datatype.DatatypeConfigurationException;
import javax.xml.datatype.DatatypeFactory;
import envoy.exception.EnvoyException;
import envoy.schema.Message; import envoy.exception.EnvoyException;
import envoy.schema.Message.Metadata.MessageState; import envoy.schema.Message;
import envoy.schema.ObjectFactory; import envoy.schema.Message.Metadata.MessageState;
import envoy.schema.Sync; import envoy.schema.ObjectFactory;
import envoy.schema.User; import envoy.schema.Sync;
import envoy.schema.User;
/**
* Project: <strong>envoy-client</strong><br> /**
* File: <strong>LocalDB.java</strong><br> * Project: <strong>envoy-client</strong><br>
* Created: <strong>27.10.2019</strong><br> * File: <strong>LocalDB.java</strong><br>
* * Created: <strong>27.10.2019</strong><br>
* @author Kai S. K. Engelbart *
* @author Maximilian K&auml;fer * @author Kai S. K. Engelbart
* @since Envoy v0.1-alpha * @author Maximilian K&auml;fer
*/ * @since Envoy v0.1-alpha
public class LocalDB { */
public class LocalDB {
private File localDB;
private User sender; private File localDB;
private List<Chat> chats = new ArrayList<>(); private User sender;
private ObjectFactory objectFactory = new ObjectFactory(); private List<Chat> chats = new ArrayList<>();
private DatatypeFactory datatypeFactory; private ObjectFactory objectFactory = new ObjectFactory();
private DatatypeFactory datatypeFactory;
private Sync unreadMessagesSync = objectFactory.createSync();
private Sync sync = objectFactory.createSync(); private static final Logger logger = Logger.getLogger(LocalDB.class.getSimpleName());
private Sync readMessages = objectFactory.createSync();
private Sync unreadMessagesSync = objectFactory.createSync();
/** private Sync sync = objectFactory.createSync();
* Constructs an empty local database. private Sync readMessages = objectFactory.createSync();
*
* @param client the user that is logged in with this client /**
* @since Envoy v0.1-alpha * Constructs an empty local database.
*/ *
* @param sender the user that is logged in with this client
public LocalDB(User sender) { * @since Envoy v0.1-alpha
this.sender = sender; */
try { public LocalDB(User sender) {
datatypeFactory = DatatypeFactory.newInstance(); this.sender = sender;
} catch (DatatypeConfigurationException e) { try {
e.printStackTrace(); 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. /**
* * Initializes the local database and fills it with values
* @param localDBDir the directory where we wish to save/load the database from. * if the user has already sent or received messages.
* @throws EnvoyException if the directory selected is not an actual directory. *
* @since Envoy v0.1-alpha * @param localDBDir the directory where we wish to save/load the database from.
*/ * @throws EnvoyException if the directory selected is not an actual directory.
public void initializeDBFile(File localDBDir) throws EnvoyException { * @since Envoy v0.1-alpha
if (localDBDir.exists() && !localDBDir.isDirectory()) */
throw new EnvoyException(String.format("LocalDBDir '%s' is not a directory!", localDBDir.getAbsolutePath())); public void initializeDBFile(File localDBDir) throws EnvoyException {
localDB = new File(localDBDir, sender.getID() + ".db"); if (localDBDir.exists() && !localDBDir.isDirectory())
if (localDB.exists()) loadFromLocalDB(); 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 * Saves the database into a file for future use.
* @since Envoy v0.1-alpha *
*/ * @throws IOException if something went wrong during saving
public void saveToLocalDB() { * @since Envoy v0.1-alpha
try { */
localDB.getParentFile().mkdirs(); public void saveToLocalDB() {
localDB.createNewFile(); try {
} catch (IOException e) { localDB.getParentFile().mkdirs();
e.printStackTrace(); localDB.createNewFile();
System.err.println("unable to save the messages"); } catch (IOException e) {
} e.printStackTrace();
try (ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(localDB))) { logger.warning("unable to save the messages");
out.writeObject(chats); }
} catch (IOException ex) { try (ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(localDB))) {
ex.printStackTrace(); out.writeObject(chats);
System.err.println("unable to save the messages"); } 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. * Loads all chats saved by Envoy for the client user.
* @since Envoy v0.1-alpha *
*/ * @throws EnvoyException if something fails while loading.
@SuppressWarnings("unchecked") * @since Envoy v0.1-alpha
private void loadFromLocalDB() throws EnvoyException { */
try (ObjectInputStream in = new ObjectInputStream(new FileInputStream(localDB))) { @SuppressWarnings("unchecked")
Object obj = in.readObject(); private void loadFromLocalDB() throws EnvoyException {
if (obj instanceof ArrayList<?>) chats = (ArrayList<Chat>) obj; try (ObjectInputStream in = new ObjectInputStream(new FileInputStream(localDB))) {
} catch (ClassNotFoundException | IOException e) { Object obj = in.readObject();
throw new EnvoyException(e); if (obj instanceof ArrayList<?>) chats = (ArrayList<Chat>) 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 * Creates a {@link Message} object serializable to XML.
* @return prepared {@link Message} object *
*/ * @param textContent The content (text) of the message
public Message createMessage(String textContent, User recipient) { * @param recipient The recipient of the message
Message.Metadata metaData = objectFactory.createMessageMetadata(); * @return prepared {@link Message} object
metaData.setSender(sender.getID()); * @since Envoy v0.1-alpha
metaData.setRecipient(recipient.getID()); */
metaData.setState(MessageState.WAITING); public Message createMessage(String textContent, User recipient) {
metaData.setDate(datatypeFactory.newXMLGregorianCalendar(Instant.now().toString())); Message.Metadata metaData = objectFactory.createMessageMetadata();
metaData.setSender(sender.getID());
Message.Content content = objectFactory.createMessageContent(); metaData.setRecipient(recipient.getID());
content.setType("text"); metaData.setState(MessageState.WAITING);
content.setText(textContent); metaData.setDate(datatypeFactory.newXMLGregorianCalendar(Instant.now().toString()));
Message message = objectFactory.createMessage(); Message.Content content = objectFactory.createMessageContent();
message.setMetadata(metaData); content.setType("text");
message.getContent().add(content); content.setText(textContent);
return message; Message message = objectFactory.createMessage();
} message.setMetadata(metaData);
message.getContent().add(content);
public Sync fillSync(long userId) {
addWaitingMessagesToSync(); return message;
}
sync.getMessages().addAll(readMessages.getMessages());
readMessages.getMessages().clear(); public Sync fillSync(long userId) {
addWaitingMessagesToSync();
System.out.println(sync.getMessages().size());
return sync; sync.getMessages().addAll(readMessages.getMessages());
} readMessages.getMessages().clear();
public void applySync(Sync returnSync) { logger.info(String.format("Filled sync with %d messages.", sync.getMessages().size()));
for (int i = 0; i < returnSync.getMessages().size(); i++) { return sync;
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 public void applySync(Sync returnSync) {
// SENT) for (int i = 0; i < returnSync.getMessages().size(); i++) {
for (int j = 0; j < sync.getMessages().size(); j++) { if (returnSync.getMessages().get(i).getMetadata().getMessageId() != 0
if (j == i) { && returnSync.getMessages().get(i).getMetadata().getState() == MessageState.SENT) {
sync.getMessages().get(j).getMetadata().setMessageId(returnSync.getMessages().get(j).getMetadata().getMessageId()); // Update Local Messages with State WAITING (add Message ID and change State to
sync.getMessages().get(j).getMetadata().setState(returnSync.getMessages().get(j).getMetadata().getState()); // 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());
if (returnSync.getMessages().get(i).getMetadata().getMessageId() != 0 && returnSync.getMessages().get(i).getMetadata().getSender() != 0 sync.getMessages().get(j).getMetadata().setState(returnSync.getMessages().get(j).getMetadata().getState());
&& 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) {
if (returnSync.getMessages().get(i).getMetadata().getMessageId() != 0 && returnSync.getMessages().get(i).getMetadata().getSender() == 0 // these are the unread Messages from the server
&& returnSync.getMessages().get(i).getMetadata().getState() == MessageState.RECEIVED) { unreadMessagesSync.getMessages().add(returnSync.getMessages().get(i));
// 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()) { if (returnSync.getMessages().get(i).getMetadata().getMessageId() != 0 && returnSync.getMessages().get(i).getMetadata().getSender() == 0
for (int k = 0; k < getChats().get(j).getModel().getSize(); k++) { && returnSync.getMessages().get(i).getMetadata().getState() == MessageState.RECEIVED) {
if (getChats().get(j).getModel().get(k).getMetadata().getMessageId() == returnSync.getMessages() // Update Messages in localDB to state RECEIVED
.get(i) for (int j = 0; j < getChats().size(); j++) {
.getMetadata() if (getChats().get(j).getRecipient().getID() == returnSync.getMessages().get(i).getMetadata().getRecipient()) {
.getMessageId()) { for (int k = 0; k < getChats().get(j).getModel().getSize(); k++) {
// Update Message in LocalDB if (getChats().get(j).getModel().get(k).getMetadata().getMessageId() == returnSync.getMessages()
getChats().get(j).getModel().get(k).getMetadata().setState(returnSync.getMessages().get(j).getMetadata().getState()); .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."); if (returnSync.getMessages().get(i).getMetadata().getMessageId() != 0
for (int j = 0; j < getChats().size(); j++) { && returnSync.getMessages().get(i).getMetadata().getState() == MessageState.READ) {
if (getChats().get(j).getRecipient().getID() == returnSync.getMessages().get(i).getMetadata().getRecipient()) { // Update local Messages to state READ
System.out.println("Chat with: " + getChats().get(j).getRecipient().getID() + "was selected."); logger.info("Message with ID: " + returnSync.getMessages().get(i).getMetadata().getMessageId()
for (int k = 0; k < getChats().get(j).getModel().getSize(); k++) { + "was initialized to be set to READ in localDB.");
if (getChats().get(j).getModel().get(k).getMetadata().getMessageId() == returnSync.getMessages() for (int j = 0; j < getChats().size(); j++) {
.get(i) if (getChats().get(j)
.getMetadata() .getRecipient()
.getMessageId()) { .getID() == returnSync.getMessages().get(i).getMetadata().getRecipient()) {
System.out.println( logger.info("Chat with: " + getChats().get(j).getRecipient().getID() + "was selected.");
"Message with ID: " + getChats().get(j).getModel().get(k).getMetadata().getMessageId() + "was selected."); for (int k = 0; k < getChats().get(j).getModel().getSize(); k++) {
getChats().get(j).getModel().get(k).getMetadata().setState(returnSync.getMessages().get(i).getMetadata().getState()); if (getChats().get(j).getModel().get(k).getMetadata().getMessageId() == returnSync.getMessages()
System.out .get(i)
.println("Message State is now: " + getChats().get(j).getModel().get(k).getMetadata().getState().toString()); .getMetadata()
} .getMessageId()) {
} logger.info("Message with ID: "
} + getChats().get(j).getModel().get(k).getMetadata().getMessageId()
} + "was selected.");
} getChats().get(j)
} .getModel()
.get(k)
// Updating UserStatus of all users in LocalDB .getMetadata()
for (int j = 0; j < returnSync.getUsers().size(); j++) { .setState(returnSync.getMessages().get(i).getMetadata().getState());
for (int k = 0; k < getChats().size(); k++) { logger.info("Message State is now: "
if (getChats().get(k).getRecipient().getID() == returnSync.getUsers().get(j).getID()) { + getChats().get(j).getModel().get(k).getMetadata().getState().toString());
}
getChats().get(k).getRecipient().setStatus(returnSync.getUsers().get(j).getStatus()); }
System.out.println(getChats().get(k).getRecipient().getStatus().toString()); }
} }
} }
} }
sync.getMessages().clear(); // Updating UserStatus of all users in LocalDB
sync.getUsers().clear(); 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()) {
/**
* Adds the unread messages returned from the server in the latest sync to the getChats().get(k).getRecipient().setStatus(returnSync.getUsers().get(j).getStatus());
* right chats in the LocalDB. logger.info(getChats().get(k).getRecipient().getStatus().toString());
* }
* @param localDB }
* @since Envoy v0.1-alpha }
*/
public void addUnreadMessagesToLocalDB() { sync.getMessages().clear();
Sync unreadMessages = unreadMessagesSync; sync.getUsers().clear();
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)); * 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
* Changes all messages with state {@code RECEIVED} of a specific chat to state */
* {@code READ}. public void addUnreadMessagesToLocalDB() {
* <br> Sync unreadMessages = unreadMessagesSync;
* Adds these messages to the {@code readMessages} {@link Sync} object. for (int i = 0; i < unreadMessages.getMessages().size(); i++)
* for (int j = 0; j < getChats().size(); j++)
* @param currentChat if (getChats().get(j).getRecipient().getID() == unreadMessages.getMessages().get(i).getMetadata().getSender()) {
* @since Envoy v0.1-alpha getChats().get(j).appendMessage(unreadMessages.getMessages().get(i));
*/ }
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) { * Changes all messages with state {@code RECEIVED} of a specific chat to state
currentChat.getModel().get(i).getMetadata().setState(MessageState.READ); * {@code READ}.
readMessages.getMessages().add(currentChat.getModel().get(i)); * <br>
} else break; * Adds these messages to the {@code readMessages} {@link Sync} object.
} *
* @param currentChat
/** * @since Envoy v0.1-alpha
* Adds all messages with state {@code WAITING} from the {@link LocalDB} to the */
* {@link Sync} object. public void setMessagesToRead(Chat currentChat) {
* for (int i = currentChat.getModel().size() - 1; i >= 0; --i)
* @since Envoy v0.1-alpha if (currentChat.getModel().get(i).getMetadata().getRecipient() != currentChat.getRecipient().getID())
*/ if (currentChat.getModel().get(i).getMetadata().getState() == MessageState.RECEIVED) {
private void addWaitingMessagesToSync() { currentChat.getModel().get(i).getMetadata().setState(MessageState.READ);
for (Chat chat : getChats()) readMessages.getMessages().add(currentChat.getModel().get(i));
for (int i = 0; i < chat.getModel().size(); i++) } else break;
if (chat.getModel().get(i).getMetadata().getState() == MessageState.WAITING) { }
System.out.println("Got Waiting Message");
sync.getMessages().add(chat.getModel().get(i)); /**
} * Adds all messages with state {@code WAITING} from the {@link LocalDB} to the
} * {@link Sync} object.
*
/** * @since Envoy v0.1-alpha
* Clears the {@code unreadMessagesSync} {@link Sync} object. */
* private void addWaitingMessagesToSync() {
* @since Envoy v0.1-alpha for (Chat chat : getChats())
*/ for (int i = 0; i < chat.getModel().size(); i++)
public void clearUnreadMessagesSync() { unreadMessagesSync.getMessages().clear(); } if (chat.getModel().get(i).getMetadata().getState() == MessageState.WAITING) {
// addMessageToSync(localDB.getChats().get(i).getModel().get(j));
/** logger.info("Got Waiting Message");
* @return all saves {@link Chat} objects that list the client user as the sync.getMessages().add(chat.getModel().get(i));
* client }
* @since Envoy v0.1-alpha }
**/
public List<Chat> getChats() { return chats; } /**
* Clears the {@code unreadMessagesSync} {@link Sync} object.
/** *
* @return the {@link User} who initialized the local database * @since Envoy v0.1-alpha
* @since Envoy v0.1-alpha */
*/ public void clearUnreadMessagesSync() { unreadMessagesSync.getMessages().clear(); }
public User getUser() { return sender; }
} /**
* @return all saves {@link Chat} objects that list the client user as the
* client
* @since Envoy v0.1-alpha
**/
public List<Chat> getChats() { return chats; }
/**
* @return the {@link User} who initialized the local database
* @since Envoy v0.1-alpha
*/
public User getUser() { return sender; }
}

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@ -10,6 +10,7 @@ import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent; import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter; import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent; import java.awt.event.WindowEvent;
import java.util.logging.Logger;
import javax.swing.DefaultListModel; import javax.swing.DefaultListModel;
import javax.swing.JButton; import javax.swing.JButton;
@ -56,6 +57,8 @@ public class ChatWindow extends JFrame {
private Chat currentChat; private Chat currentChat;
private JTextArea messageEnterTextArea; private JTextArea messageEnterTextArea;
private static final Logger logger = Logger.getLogger(ChatWindow.class.getSimpleName());
public ChatWindow(Client client, LocalDB localDB) { public ChatWindow(Client client, LocalDB localDB) {
this.client = client; this.client = client;
@ -186,7 +189,7 @@ public class ChatWindow extends JFrame {
SettingsScreen.open(localDB.getUser().getName()); SettingsScreen.open(localDB.getUser().getName());
} catch (Exception e) { } catch (Exception e) {
SettingsScreen.open(); 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(); e.printStackTrace();
} }
}); });

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@ -3,6 +3,8 @@ package envoy.client.ui;
import java.awt.EventQueue; import java.awt.EventQueue;
import java.io.IOException; import java.io.IOException;
import java.util.Properties; import java.util.Properties;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JOptionPane; import javax.swing.JOptionPane;
@ -24,7 +26,11 @@ import envoy.exception.EnvoyException;
*/ */
public class Startup { public class Startup {
private static final Logger logger = Logger.getLogger(Client.class.getSimpleName());
public static void main(String[] args) { public static void main(String[] args) {
logger.setLevel(Level.ALL);
Config config = Config.getInstance(); Config config = Config.getInstance();
// Load the configuration from client.properties first // Load the configuration from client.properties first
@ -42,6 +48,7 @@ public class Startup {
config.load(args); config.load(args);
if (!config.isInitialized()) { if (!config.isInitialized()) {
logger.warning("Server or port are not defined. Exiting...");
JOptionPane.showMessageDialog(null, "Error loading configuration values.", "Configuration error", JOptionPane.showMessageDialog(null, "Error loading configuration values.", "Configuration error",
JOptionPane.ERROR_MESSAGE); JOptionPane.ERROR_MESSAGE);
System.exit(1); System.exit(1);
@ -49,7 +56,7 @@ public class Startup {
String userName = JOptionPane.showInputDialog("Please enter your username"); String userName = JOptionPane.showInputDialog("Please enter your username");
if (userName == null || userName.isEmpty()) { 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); System.exit(1);
} }
Client client = new Client(config, userName); Client client = new Client(config, userName);