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Merge pull request #26 from informatik-ag-ngl/f/contacts

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Contacts handling on the server
This commit is contained in:
DieGurke
2020-02-11 18:25:45 +01:00
committed by GitHub
parent 6b5ed80727 e2ed5706a7
commit 275ae328d9
6 changed files with 143 additions and 16 deletions
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2
src/main/java/envoy/server/Startup.java
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@@ -38,6 +38,8 @@ public class Startup {
processors.add(new MessageStatusChangeProcessor());
processors.add(new UserStatusChangeProcessor());
processors.add(new IdGeneratorRequestProcessor());
processors.add(new ContactsRequestEventProcessor());
processors.add(new ContactOperationProcessor());
Server server = new Server(8080, () -> new ObjectMessageReader(), new ObjectMessageProcessor(processors));
initializeCurrentMessageId();

13
src/main/java/envoy/server/data/User.java
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@@ -16,14 +16,19 @@ import javax.persistence.*;
* Created: <strong>02.01.2020</strong><br>
*
* @author Kai S. K. Engelbart
* @author Maximilian K&auml;fer
* @since Envoy Server Standalone v0.1-alpha
*/
@Entity
@Table(name = "users")
@NamedQueries(
{ @NamedQuery(query = "SELECT u FROM User u WHERE u.name = :name", name = "getUserByName"),
@NamedQuery(query = "SELECT u.contacts FROM User u WHERE u = :user", name = "getContactsOfUser")// not tested
}
{ @NamedQuery(query = "SELECT u FROM User u WHERE u.name = :name", name = "getUserByName"), @NamedQuery(
query = "SELECT u.contacts FROM User u WHERE u = :user",
name = "getContactsOfUser"
), @NamedQuery(
query = "SELECT u FROM User u WHERE (lower(u.name) LIKE lower(:searchPhrase) AND u <> :context AND NOT :context in elements(u.contacts))",
name = "searchUsers"
) }
)
public class User {
@@ -37,7 +42,7 @@ public class User {
private Date lastSeen;
private envoy.data.User.UserStatus status;
@OneToMany(targetEntity = User.class, cascade = CascadeType.ALL, orphanRemoval = true)
@ManyToMany(targetEntity = User.class, cascade = CascadeType.ALL)
private List<User> contacts;
/**

44
src/main/java/envoy/server/database/PersistenceManager.java
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@@ -177,12 +177,44 @@ public class PersistenceManager {
}
/**
* @param user the User whose contacts should be retrieved
* @return the contacts of this User - currently everyone using Envoy
* Searches for users matching a search phrase. Contacts of the attached user
* and the attached user is ignored.
*
* @param searchPhrase the search phrase
* @param userId the ID of the user in whose context the search is
* performed
* @return a list of all users who matched the criteria
* @since Envoy Server Standalone v0.1-alpha
*/
public List<User> getContacts(User user) { return entityManager.createQuery("FROM User").getResultList(); }
// TODO current solution gets all users, not just contacts. Should be changed to
// entityManager.createNamedQuery("getContactsOfUser").setParameter("user",
// user).getResultList();
public List<User> searchUsers(String searchPhrase, long userId) {
return entityManager.createNamedQuery("searchUsers")
.setParameter("searchPhrase", searchPhrase + "%")
.setParameter("context", getUserById(userId))
.getResultList();
}
/**
* Adds a user to the contact list of another user and vice versa.
*
* @param userId1 the ID of the first user
* @param userId2 the ID of the second user
* @since Envoy Server Standalone v0.1-alpha
*/
public void addContact(long userId1, long userId2) {
User u1 = getUserById(userId1);
User u2 = getUserById(userId2);
u1.getContacts().add(u2);
u2.getContacts().add(u1);
updateUser(u1);
updateUser(u2);
}
/**
* @param user the User whose contacts should be retrieved
* @return the contacts of this User
* @since Envoy Server Standalone v0.1-alpha
*/
public List<User> getContacts(User user) {
return entityManager.createNamedQuery("getContactsOfUser").setParameter("user", user).getResultList();
}
}

46
src/main/java/envoy/server/processors/ContactOperationProcessor.java Normal file
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@@ -0,0 +1,46 @@
package envoy.server.processors;
import java.io.IOException;
import java.util.Arrays;
import envoy.data.Contacts;
import envoy.event.ContactOperationEvent;
import envoy.server.ConnectionManager;
import envoy.server.ObjectProcessor;
import envoy.server.database.PersistenceManager;
import envoy.server.net.ObjectWriteProxy;
/**
* Project: <strong>envoy-server-standalone</strong><br>
* File: <strong>ContactOperationProcessor.java</strong><br>
* Created: <strong>08.02.2020</strong><br>
*
* @author Kai S. K. Engelbart
* @since Envoy Server Standalone v0.1-alpha
*/
public class ContactOperationProcessor implements ObjectProcessor<ContactOperationEvent> {
private static final ConnectionManager connectionManager = ConnectionManager.getInstance();
@Override
public void process(ContactOperationEvent evt, long socketId, ObjectWriteProxy writeProxy) throws IOException {
switch (evt.getOperationType()) {
case ADD:
final long userId = ConnectionManager.getInstance().getUserIdBySocketId(socketId);
final long contactId = evt.get().getId();
System.out.printf("Adding user %s to the contact list of user %d.%n", evt.get(), userId);
PersistenceManager.getPersistenceManager().addContact(userId, contactId);
// Notify the contact if online
if (ConnectionManager.getInstance().isOnline(contactId)) writeProxy.write(connectionManager.getSocketId(contactId),
new Contacts(Arrays.asList(PersistenceManager.getPersistenceManager().getUserById(userId).toCommonUser())));
break;
default:
System.err.printf("Received %s with an unsupported operation.%n", evt);
}
}
@Override
public Class<ContactOperationEvent> getInputClass() { return ContactOperationEvent.class; }
}

45
src/main/java/envoy/server/processors/ContactsRequestEventProcessor.java Normal file
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@@ -0,0 +1,45 @@
package envoy.server.processors;
import java.io.IOException;
import java.util.stream.Collectors;
import envoy.data.Contacts;
import envoy.event.ContactSearchRequest;
import envoy.event.ContactSearchResult;
import envoy.server.ConnectionManager;
import envoy.server.ObjectProcessor;
import envoy.server.data.User;
import envoy.server.database.PersistenceManager;
import envoy.server.net.ObjectWriteProxy;
/**
* Project: <strong>envoy-server-standalone</strong><br>
* File: <strong>ContactsRequestEventProcessor.java</strong><br>
* Created: <strong>08.02.2020</strong><br>
*
* @author Kai S. K. Engelbart
* @author Maximilian K&auml;fer
* @since Envoy Server Standalone v0.1-alpha
*/
public class ContactsRequestEventProcessor implements ObjectProcessor<ContactSearchRequest> {
/**
* Writes a {@link Contacts} list to the client containing all {@link User}s
* matching the search phrase contained inside the request. The client and their
* contacts are excluded from the result.
*
* @since Envoy Server Standalone v0.1-alpha
*/
@Override
public void process(ContactSearchRequest request, long socketId, ObjectWriteProxy writeProxy) throws IOException {
writeProxy.write(socketId,
new ContactSearchResult(PersistenceManager.getPersistenceManager()
.searchUsers(request.get(), ConnectionManager.getInstance().getUserIdBySocketId(socketId))
.stream()
.map(User::toCommonUser)
.collect(Collectors.toList())));
}
@Override
public Class<ContactSearchRequest> getInputClass() { return ContactSearchRequest.class; }
}

9
src/main/java/envoy/server/processors/LoginCredentialProcessor.java
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@@ -1,9 +1,7 @@
package envoy.server.processors;
import java.io.IOException;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.*;
import java.util.stream.Collectors;
import envoy.data.Contacts;
@@ -52,8 +50,7 @@ public class LoginCredentialProcessor implements ObjectProcessor<LoginCredential
UserStatusChangeProcessor.updateUserStatus(user);
// Create contacts
Contacts contacts = new Contacts(user.getId(),
user.getContacts().stream().map(envoy.server.data.User::toCommonUser).collect(Collectors.toList()));
Contacts contacts = new Contacts(user.getContacts().stream().map(envoy.server.data.User::toCommonUser).collect(Collectors.toList()));
contacts.getContacts().add(user.toCommonUser());
// Complete handshake
@@ -81,8 +78,8 @@ public class LoginCredentialProcessor implements ObjectProcessor<LoginCredential
user.setLastSeen(new Date());
user.setStatus(User.UserStatus.ONLINE);
user.setPasswordHash(credentials.getPasswordHash());
user.setContacts(PersistenceManager.getPersistenceManager().getContacts(user));
persistenceManager.addUser(user);
user.setContacts(new ArrayList<>());
} else {
user = persistenceManager.getUserByName(credentials.getName());
// TODO: Implement error when user does not exist