From 4a8d5b5ef5017271c7b7bc1c0f977c756abff34a Mon Sep 17 00:00:00 2001 From: delvh Date: Mon, 30 Dec 2019 18:49:48 +0100 Subject: [PATCH] built general message class instead of subtypes of it additionally fixed malformed Javadoc in the entire repository --- .../java/envoy/data/LoginCredentials.java | 67 ++++----- src/main/java/envoy/data/Message.java | 136 +++++++++++++----- .../java/envoy/data/MessageAttachment.java | 26 ++++ src/main/java/envoy/data/TextMessage.java | 54 ------- src/main/java/envoy/data/User.java | 50 +++++-- .../java/envoy/exception/EnvoyException.java | 55 ++++--- .../java/envoy/util/SerializationUtils.java | 33 +++-- 7 files changed, 255 insertions(+), 166 deletions(-) create mode 100644 src/main/java/envoy/data/MessageAttachment.java delete mode 100644 src/main/java/envoy/data/TextMessage.java diff --git a/src/main/java/envoy/data/LoginCredentials.java b/src/main/java/envoy/data/LoginCredentials.java index 86b166c..a8d9c6b 100644 --- a/src/main/java/envoy/data/LoginCredentials.java +++ b/src/main/java/envoy/data/LoginCredentials.java @@ -9,55 +9,29 @@ import java.util.Formatter; * Project: envoy-common
* File: LoginCredentials.java
* Created: 29.12.2019
- * + * * @author Kai S. K. Engelbart * @since Envoy Common v0.2-alpha */ public class LoginCredentials implements Serializable { - private final String name; - private final byte[] passwordHash; - - private static final long serialVersionUID = -7395245059059523314L; + private static final long serialVersionUID = -7395245059059523314L; + private final String name; + private final byte[] passwordHash; /** * Creates an in stance of {@link LoginCredentials}. - * + * * @param name the name of the user * @param password the password of the user (will be converted to a hash) - * @throws NoSuchAlgorithmException + * @throws NoSuchAlgorithmException if the algorithm used is unknown + * @since Envoy Common v0.2-alpha */ public LoginCredentials(String name, char[] password) throws NoSuchAlgorithmException { this.name = name; passwordHash = getSha256(toByteArray(password)); } - @Override - public String toString() { - Formatter form = new Formatter(); - form.format("LoginCredentials[name=%s,passwordHash=", name); - for (int i = 0; i < passwordHash.length; i++) - form.format("%02x", passwordHash[i]); - form.format("]"); - String str = form.toString(); - form.close(); - return str; - } - - private byte[] toByteArray(char[] chars) { - byte[] bytes = new byte[chars.length * 2]; - for (int i = 0; i < chars.length; ++i) { - bytes[i * 2] = (byte) (chars[i] >> 8); - bytes[i * 2 + 1] = (byte) (chars[i]); - } - return bytes; - } - - private byte[] getSha256(byte[] input) throws NoSuchAlgorithmException { - MessageDigest md = MessageDigest.getInstance("SHA-256"); - return md.digest(input); - } - /** * @return the name of the user performing the login * @since Envoy Common v0.2-alpha @@ -69,4 +43,31 @@ public class LoginCredentials implements Serializable { * @since Envoy Common v0.2-alpha */ public byte[] getPasswordHash() { return passwordHash; } + + private byte[] getSha256(byte[] input) throws NoSuchAlgorithmException { + MessageDigest md = MessageDigest.getInstance("SHA-256"); + return md.digest(input); + } + + private byte[] toByteArray(char[] chars) { + byte[] bytes = new byte[chars.length * 2]; + for (int i = 0; i < chars.length; ++i) { + bytes[i * 2] = (byte) (chars[i] >> 8); + bytes[i * 2 + 1] = (byte) (chars[i]); + } + return bytes; + } + + @Override + public String toString() { + try (Formatter form = new Formatter()) { + form.format("LoginCredentials[name=%s,passwordHash=", name); + for (byte element : passwordHash) { + form.format("%02x", element); + } + form.format("]"); + String str = form.toString(); + return str; + } + } } \ No newline at end of file diff --git a/src/main/java/envoy/data/Message.java b/src/main/java/envoy/data/Message.java index 555c751..acb3d6f 100644 --- a/src/main/java/envoy/data/Message.java +++ b/src/main/java/envoy/data/Message.java @@ -1,7 +1,9 @@ package envoy.data; import java.io.Serializable; +import java.text.SimpleDateFormat; import java.util.Date; +import java.util.Optional; /** * Represents a unique message with a unique, numeric ID. Further metadata @@ -11,68 +13,121 @@ import java.util.Date; * Project: envoy-common
* File: Message.java
* Created: 28.12.2019
- * + * * @author Kai S. K. Engelbart + * @author Leon Hofmeister * @since Envoy Common v0.2-alpha */ public abstract class Message implements Serializable { - private final long id; - private final User sender, recipient; - private final Date date; + /** + * This enum defines all possible statuses a {link Message} can have. + * + * @since Envoy Common v0.2-alpha + */ + public static enum MessageStatus { + + /** + * is selected, if a message was sent but not received by the server yet. + */ + WAITING, + + /** + * is selected, if a sent message was received by the server. + */ + SENT, + + /** + * is selected, if a message was delivered from the server to the recipient, but + * has not been read yet. + */ + RECEIVED, + + /** + * is selected, if a recipient opened the corresponding chat of said message. + */ + READ + } + + private static final long serialVersionUID = -4393477412979594435L; + private final long id; + + private final User sender, recipient; + + private final Date date; + + private final String text; + + private final MessageAttachment messageAttachment; private MessageStatus status; - private static final long serialVersionUID = -4393477412979594435L; - /** * Initializes a {@link Message} from the client's perspective. The current date * is used as the message date and the status is set to * {@link MessageStatus#WAITING}. - * - * @param id unique ID - * @param sender the user who sends the message - * @param recipient the user who receives the message + * + * @param the type of the attachment + * @param id unique ID + * @param sender the user who sends the message + * @param recipient the user who receives the message + * @param text the text content of the message + * @param attachment the attachment of the message, if present * @since Envoy Common v0.2-alpha */ - public Message(long id, User sender, User recipient) { - this.id = id; - this.sender = sender; - this.recipient = recipient; - date = new Date(); - status = MessageStatus.WAITING; + public Message(long id, User sender, User recipient, String text, @SuppressWarnings("rawtypes") Optional attachment) { + this.id = id; + this.sender = sender; + this.recipient = recipient; + this.text = text; + this.messageAttachment = attachment.isEmpty() ? null : attachment.get(); + this.date = new Date(); + this.status = MessageStatus.WAITING; } - /** - * @return the ID of this message - * @since Envoy Common v0.2-alpha - */ - public long getId() { return id; } - - /** - * @return the sender of this message - * @since Envoy Common v0.2-alpha - */ - public User getSender() { return sender; } - - /** - * @return the recipient of this message - * @since Envoy Common v0.2-alpha - */ - public User getRecipient() { return recipient; } - /** * @return the date at which this message was created * @since Envoy Common v0.2-alpha */ public Date getDate() { return date; } + /** + * @return the ID of this message + * @since Envoy Common v0.2-alpha + */ + public long getId() { return id; } + + /** + * @param the type of the message attachment + * @return the messageAttachment + * @since Envoy Common v0.2-alpha + */ + public MessageAttachment getMessageAttachment() { return messageAttachment; } + + /** + * @return the recipient of this message + * @since Envoy Common v0.2-alpha + */ + public User getRecipient() { return recipient; } + + /** + * @return the sender of this message + * @since Envoy Common v0.2-alpha + */ + public User getSender() { return sender; } + /** * @return the current status of this message * @since Envoy Common v0.2-alpha */ public MessageStatus getStatus() { return status; } + /** + * @return the text content of this message + * @since Envoy Common v0.2-alpha + */ + public String getText() { return text; } + /** * Changes the current {@link MessageStatus} to the next logical status.
*
@@ -83,7 +138,7 @@ public abstract class Message implements Serializable { *
  • {@link MessageStatus#RECEIVED} *
  • {@link MessageStatus#READ} * - * + * * @since Envoy Common v0.2-alpha */ public void nextStatus() { @@ -91,7 +146,14 @@ public abstract class Message implements Serializable { status = MessageStatus.values()[status.ordinal() + 1]; } - public static enum MessageStatus { - WAITING, SENT, RECEIVED, READ + @Override + public String toString() { + return String.format("TextMessage[id=%d,sender=%s,recipient=%s,date=%s,status=%s,content=%s]", + id, + sender, + recipient, + new SimpleDateFormat("dd.MM.yyyy HH:mm:ss").format(date), + status, + text); } } \ No newline at end of file diff --git a/src/main/java/envoy/data/MessageAttachment.java b/src/main/java/envoy/data/MessageAttachment.java new file mode 100644 index 0000000..fa86998 --- /dev/null +++ b/src/main/java/envoy/data/MessageAttachment.java @@ -0,0 +1,26 @@ +package envoy.data; + +import java.io.Serializable; + +import javax.swing.Scrollable; + +/** + * This Interface should be used for any type supposed to be a {@link Message} + * attachment (i.e. images or sound).
    + *
    + * Project: envoy-common
    + * File: MessageAttachment.java
    + * Created: 30 Dec 2019
    + * + * @author Leon Hofmeister + * @param the type of this message attachment + * @since Envoy Common v0.2-alpha + */ +public interface MessageAttachment extends Serializable, Scrollable { + + /** + * @return the type implementing this interface + * @since Envoy Common v0.2-alpha + */ + T get(); +} diff --git a/src/main/java/envoy/data/TextMessage.java b/src/main/java/envoy/data/TextMessage.java deleted file mode 100644 index cbee210..0000000 --- a/src/main/java/envoy/data/TextMessage.java +++ /dev/null @@ -1,54 +0,0 @@ -package envoy.data; - -import java.text.SimpleDateFormat; - -/** - * Represents a {@link Message} with content that is comprised of text.
    - *
    - * Project: envoy-common
    - * File: TextMessage.java
    - * Created: 28.12.2019
    - * - * @author Kai S. K. Engelbart - * @since Envoy Common v0.2-alpha - */ -public class TextMessage extends Message { - - private final String content; - - private static final long serialVersionUID = 1538164720632899917L; - - /** - * Initializes a {@link TextMessage} from the client's perspective. The current - * date - * is used as the message date and the status is set to - * {@link envoy.data.Message.MessageStatus#WAITING}. - * - * @param id unique ID - * @param sender the user who sends the message - * @param recipient the user who receives the message - * @param content the content of the message - * @since Envoy Common v0.2-alpha - */ - public TextMessage(long id, User sender, User recipient, String content) { - super(id, sender, recipient); - this.content = content; - } - - @Override - public String toString() { - return String.format("TextMessage[id=%d,sender=%s,recipient=%s,date=%s,status=%s,content=%s]", - getId(), - getSender(), - getRecipient(), - new SimpleDateFormat("dd.MM.yyyy HH:mm:ss").format(getDate()), - getStatus(), - content); - } - - /** - * @return the content of this {@link TextMessage} - * @since Envoy Common v0.2-alpha - */ - public String getContent() { return content; } -} \ No newline at end of file diff --git a/src/main/java/envoy/data/User.java b/src/main/java/envoy/data/User.java index afca690..6109218 100644 --- a/src/main/java/envoy/data/User.java +++ b/src/main/java/envoy/data/User.java @@ -9,23 +9,53 @@ import java.io.Serializable; * Project: envoy-common
    * File: User.java
    * Created: 28.12.2019
    - * + * * @author Kai S. K. Engelbart * @since Envoy Common v0.2-alpha */ public class User implements Serializable { - private final long id; - private final String name; + /** + * This enum defines all possible statuses a user can have. + * + * @since Envoy Common v0.2-alpha + */ + public static enum UserStatus { - private UserStatus status; + /** + * select this, if a user is online and can be interacted with + */ + ONLINE, + + /** + * select this, if a user is online but unavailable at the moment (sudden + * interruption) + */ + AWAY, + + /** + * select this, if a user is online but unavailable at the moment (polite way) + */ + BUSY, + + /** + * select this, if a user is offline + */ + OFFLINE; + } private static final long serialVersionUID = 3530947374856708236L; + private final long id; + + private final String name; + + private UserStatus status; + /** * Initializes a {@link User}. The {@link UserStatus} is set to * {@link UserStatus#OFFLINE}. - * + * * @param id unique ID * @param name user name * @since Envoy Client v0.2-alpha @@ -36,9 +66,6 @@ public class User implements Serializable { status = UserStatus.OFFLINE; } - @Override - public String toString() { return String.format("User[id=%d,name=%s,status=%s]", id, name, status); } - /** * @return the ID of this {@link User} * @since Envoy Client v0.2-alpha @@ -59,13 +86,12 @@ public class User implements Serializable { /** * Sets the current status of this user - * + * * @param status the status to set * @since Envoy Client v0.2-alpha */ public void setStatus(UserStatus status) { this.status = status; } - public static enum UserStatus { - ONLINE, AWAY, BUSY, OFFLINE; - } + @Override + public String toString() { return String.format("User[id=%d,name=%s,status=%s]", id, name, status); } } \ No newline at end of file diff --git a/src/main/java/envoy/exception/EnvoyException.java b/src/main/java/envoy/exception/EnvoyException.java index 00f9946..650e1bb 100644 --- a/src/main/java/envoy/exception/EnvoyException.java +++ b/src/main/java/envoy/exception/EnvoyException.java @@ -1,20 +1,35 @@ -package envoy.exception; - -/** - * Project: envoy-common
    - * File: EnvoyException.java
    - * Created: 27 Oct 2019
    - * - * @author Kai S. K. Engelbart - * @since Envoy v0.1-alpha - */ -public class EnvoyException extends Exception { - - private static final long serialVersionUID = 2096147309395387479L; - - public EnvoyException(String message, Throwable cause) { super(message, cause); } - - public EnvoyException(String message) { super(message); } - - public EnvoyException(Throwable cause) { super(cause); } -} +package envoy.exception; + +/** + * Project: envoy-common
    + * File: EnvoyException.java
    + * Created: 27 Oct 2019
    + * + * @author Kai S. K. Engelbart + * @since Envoy v0.1-alpha + */ +public class EnvoyException extends Exception { + + private static final long serialVersionUID = 2096147309395387479L; + + /** + * @param message the message to display once this Exception is thrown + * @since Envoy Common v0.2-alpha + */ + public EnvoyException(String message) { super(message); } + + /** + * @param message the message to display once this Exception is thrown + * @param cause the {@link Throwable} which resulted in the throw of an + * EnvoyException + * @since Envoy Common v0.2-alpha + */ + public EnvoyException(String message, Throwable cause) { super(message, cause); } + + /** + * @param cause the {@link Throwable} which resulted in the throw of an + * EnvoyException + * @since Envoy Common v0.2-alpha + */ + public EnvoyException(Throwable cause) { super(cause); } +} diff --git a/src/main/java/envoy/util/SerializationUtils.java b/src/main/java/envoy/util/SerializationUtils.java index dfd166b..c070733 100644 --- a/src/main/java/envoy/util/SerializationUtils.java +++ b/src/main/java/envoy/util/SerializationUtils.java @@ -11,28 +11,29 @@ import java.io.ObjectOutputStream; import java.io.OutputStream; import java.io.Serializable; -import envoy.exception.EnvoyException; - /** * Project: envoy-client
    * File: SerializationUtils.java
    * Created: 23.12.2019
    - * + * * @author Kai S. K. Engelbart * @since Envoy Common v0.2-alpha */ public class SerializationUtils { - private SerializationUtils() {} + private static byte[] intToBytes(int n) { return new byte[] { (byte) (n >>> 24), (byte) (n >>> 16), (byte) (n >>> 8), (byte) n }; } /** * Deserializes an arbitrary {@link Serializable} object from a file. - * + * * @param the type of the object to deserialize - * @param file the file deserialize from + * @param file the file to deserialize from * @param serializedClass the class of the object to deserialize * @return the deserialized object - * @throws EnvoyException if an error occurred during deserialization + * @throws IOException if something failed while deserializing the + * object + * @throws ClassNotFoundException if the deserialized object can not be linked + * to a class * @since Envoy Common v0.2-alpha */ public static T read(File file, Class serializedClass) throws IOException, ClassNotFoundException { @@ -40,6 +41,18 @@ public class SerializationUtils { return read(new FileInputStream(file), serializedClass); } + /** + * @param the deserialized object + * @param in the {@link InputStream} of a serialized Object + * @param serializedClass the object type to convert the deserialized object + * into + * @return the deserialized object + * @throws IOException if something failed while deserializing the + * object + * @throws ClassNotFoundException if the deserialized object can not be linked + * to a class + * @since Envoy Common v0.2-alpha + */ public static T read(InputStream in, Class serializedClass) throws IOException, ClassNotFoundException { try (ObjectInputStream oin = new ObjectInputStream(in)) { return serializedClass.cast(oin.readObject()); @@ -48,7 +61,7 @@ public class SerializationUtils { /** * Serializes an arbitrary object to a file. - * + * * @param file the file to serialize to * @param obj the object to serialize * @throws IOException if an error occurred during serialization @@ -69,7 +82,7 @@ public class SerializationUtils { /** * Serializes an object and writes it into an output stream preceded by 4 bytes * containing the number of serialized bytes. - * + * * @param obj the object to serialize * @param out the output stream to serialize to * @throws IOException if an error occurred during serialization @@ -90,5 +103,5 @@ public class SerializationUtils { out.write(objBytes); } - private static byte[] intToBytes(int n) { return new byte[] { (byte) (n >>> 24), (byte) (n >>> 16), (byte) (n >>> 8), (byte) n }; } + private SerializationUtils() {} } \ No newline at end of file