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This commit is contained in:
Paulo Gustavo Veiga 2022-03-22 08:35:47 -03:00
parent fdd6fb928b
commit cbdd6ebb47
5 changed files with 69 additions and 83 deletions
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4
wise-webapp/src/main/java/com/wisemapping/listener/UnlockOnExpireListener.java
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@ -47,10 +47,11 @@ public class UnlockOnExpireListener implements HttpSessionListener {
final ServletContext servletContext = event.getSession().getServletContext();
final WebApplicationContext wc = WebApplicationContextUtils.getRequiredWebApplicationContext(servletContext);
final MindmapService mindmapService = (MindmapService) wc.getBean("mindmapService");
final LockManager lockManager = mindmapService.getLockManager();
final LockManager lockManager = mindmapService.getLockManager();
final User user = Utils.getUser(false);
if (user != null) {
synchronized (mindmapService.getLockManager()) {
try {
lockManager.unlockAll(user);
} catch (LockException | AccessDeniedSecurityException e) {
@ -59,3 +60,4 @@ public class UnlockOnExpireListener implements HttpSessionListener {
}
}
}
}

43
wise-webapp/src/main/java/com/wisemapping/rest/MindmapController.java
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@ -122,7 +122,8 @@ public class MindmapController extends BaseController {
}
// Have permissions ?
long result = verifyAndUpdateLock(mindmap, user, session, timestamp);
final LockManager lockManager = mindmapService.getLockManager();
long result = lockManager.verifyAndUpdateLock(mindmap, user, session, timestamp);
// Update collaboration properties ...
final CollaborationProperties collaborationProperties = mindmap.findCollaborationProperties(user);
@ -580,45 +581,5 @@ public class MindmapController extends BaseController {
mindmapService.updateMindmap(mindmap, false);
}
private long verifyAndUpdateLock(@NotNull Mindmap mindmap, @NotNull User user, @Nullable long session, @NotNull long timestamp) throws WiseMappingException {
// Could the map be updated ?
verifyLock(mindmap, user, session, timestamp);
// Update timestamp for lock ...
final LockManager lockManager = mindmapService.getLockManager();
final LockInfo lockInfo = lockManager.updateExpirationTimeout(mindmap, user);
return lockInfo.getTimestamp();
}
private void verifyLock(@NotNull Mindmap mindmap, @NotNull User user, long session, long timestamp) throws WiseMappingException {
// The lock was lost, reclaim as the ownership of it.
final LockManager lockManager = mindmapService.getLockManager();
final boolean lockLost = lockManager.isLocked(mindmap);
if (!lockLost) {
lockManager.lock(mindmap, user, session);
}
final LockInfo lockInfo = lockManager.getLockInfo(mindmap);
if (lockInfo.getUser().identityEquality(user)) {
long savedTimestamp = mindmap.getLastModificationTime().getTimeInMillis();
final boolean outdated = savedTimestamp > timestamp;
if (lockInfo.getSession() == session) {
// Timestamp might not be returned to the client. This try to cover this case, ignoring the client timestamp check.
final User lastEditor = mindmap.getLastEditor();
boolean editedBySameUser = lastEditor == null || user.identityEquality(lastEditor);
if (outdated && !editedBySameUser) {
throw new SessionExpiredException("Map has been updated by " + (lastEditor.getEmail()) + ",Timestamp:" + timestamp + "," + savedTimestamp + ", User:" + lastEditor.getId() + ":" + user.getId() + ",Mail:'" + lastEditor.getEmail() + "':'" + user.getEmail(), lastEditor);
}
} else if (outdated) {
logger.warn("Sessions:" + session + ":" + lockInfo.getSession() + ",Timestamp: " + timestamp + ": " + savedTimestamp);
// @Todo: Temporally disabled to unblock save action. More research needed.
// throw new MultipleSessionsOpenException("Sessions:" + session + ":" + lockInfo.getSession() + ",Timestamp: " + timestamp + ": " + savedTimestamp);
}
} else {
throw new SessionExpiredException("Different Users.", lockInfo.getUser());
}
}
}

6
wise-webapp/src/main/java/com/wisemapping/service/LockManager.java
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@ -20,6 +20,7 @@ package com.wisemapping.service;
import com.wisemapping.exceptions.AccessDeniedSecurityException;
import com.wisemapping.exceptions.LockException;
import com.wisemapping.exceptions.SessionExpiredException;
import com.wisemapping.exceptions.WiseMappingException;
import com.wisemapping.model.Mindmap;
import com.wisemapping.model.User;
@ -38,8 +39,7 @@ public interface LockManager {
boolean isLockedBy(@NotNull Mindmap mindmap, @NotNull User collaborator);
@NotNull
LockInfo lock(@NotNull Mindmap mindmap, @NotNull User user, long session) throws WiseMappingException;
long generateSession();
long verifyAndUpdateLock(@NotNull Mindmap mindmap, @NotNull User user, long session, long timestamp) throws LockException, SessionExpiredException;
}

75
wise-webapp/src/main/java/com/wisemapping/service/LockManagerImpl.java
View File

@ -20,35 +20,21 @@ package com.wisemapping.service;
import com.wisemapping.exceptions.AccessDeniedSecurityException;
import com.wisemapping.exceptions.LockException;
import com.wisemapping.exceptions.WiseMappingException;
import com.wisemapping.exceptions.SessionExpiredException;
import com.wisemapping.model.CollaborationRole;
import com.wisemapping.model.Mindmap;
import com.wisemapping.model.User;
import org.apache.log4j.Logger;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;
/*
* Refresh page should not lost the lock.
* En caso que no sea posible grabar por que se perdio el lock, usar mensaje de error para explicar el por que...
* Mensaje modal explicando que el mapa esta siendo editado, por eso no es posible edilarlo....
* Internacionalizacion de los mensaje ...
* Logout limpiar las sessiones ...
*
* Casos:
* - Usuario pierde el lock:
* - Y grabo con la misma sessions y el timestap ok.
* - Y grabo con la misma session y el timestap esta mal
* - Y grabo con distinta sessions
* - Usuario pierde el lock, pero intenta grabar camio
*/
class LockManagerImpl implements LockManager {
public static final int ONE_MINUTE_MILLISECONDS = 1000 * 60;
final Map<Integer, LockInfo> lockInfoByMapId;
final static Timer expirationTimer = new Timer();
private static final int ONE_MINUTE_MILLISECONDS = 1000 * 60;
private final Map<Integer, LockInfo> lockInfoByMapId;
private final static Timer expirationTimer = new Timer();
final private static Logger logger = Logger.getLogger(LockManagerImpl.class);
@Override
@ -123,17 +109,12 @@ class LockManagerImpl implements LockManager {
return System.nanoTime();
}
@Override
@NotNull
public LockInfo lock(@NotNull Mindmap mindmap, @NotNull User user, long session) throws WiseMappingException {
private LockInfo lock(@NotNull Mindmap mindmap, @NotNull User user, long session) throws LockException {
if (isLocked(mindmap) && !isLockedBy(mindmap, user)) {
throw new LockException("Invalid lock, this should not happen");
}
if (!mindmap.hasPermissions(user, CollaborationRole.EDITOR)) {
throw new AccessDeniedSecurityException(mindmap.getId(), user);
}
LockInfo result = lockInfoByMapId.get(mindmap.getId());
if (result != null) {
// Update timeout only...
@ -154,17 +135,59 @@ class LockManagerImpl implements LockManager {
@Override
public void run() {
synchronized (this) {
logger.debug("Lock expiration scheduler started. Current locks:" + lockInfoByMapId.keySet());
// Search for expired sessions and remove them ....
lockInfoByMapId.
keySet().
stream().
filter(mapId -> lockInfoByMapId.get(mapId).isExpired()).
forEach(mapId -> unlock(mapId));
}
}
}, ONE_MINUTE_MILLISECONDS, ONE_MINUTE_MILLISECONDS);
}
public long verifyAndUpdateLock(@NotNull Mindmap mindmap, @NotNull User user, @Nullable long session, @NotNull long timestamp) throws LockException, SessionExpiredException {
synchronized (this) {
// Could the map be updated ?
verifyLock(mindmap, user, session, timestamp);
// Update timestamp for lock ...
final LockInfo lockInfo = this.updateExpirationTimeout(mindmap, user);
return lockInfo.getTimestamp();
}
}
private void verifyLock(@NotNull Mindmap mindmap, @NotNull User user, long session, long timestamp) throws LockException, SessionExpiredException {
// The lock was lost, reclaim as the ownership of it.
final boolean lockLost = this.isLocked(mindmap);
if (!lockLost) {
this.lock(mindmap, user, session);
}
final LockInfo lockInfo = this.getLockInfo(mindmap);
if (lockInfo.getUser().identityEquality(user)) {
long savedTimestamp = mindmap.getLastModificationTime().getTimeInMillis();
final boolean outdated = savedTimestamp > timestamp;
if (lockInfo.getSession() == session) {
// Timestamp might not be returned to the client. This try to cover this case, ignoring the client timestamp check.
final User lastEditor = mindmap.getLastEditor();
boolean editedBySameUser = lastEditor == null || user.identityEquality(lastEditor);
if (outdated && !editedBySameUser) {
throw new SessionExpiredException("Map has been updated by " + (lastEditor.getEmail()) + ",Timestamp:" + timestamp + "," + savedTimestamp + ", User:" + lastEditor.getId() + ":" + user.getId() + ",Mail:'" + lastEditor.getEmail() + "':'" + user.getEmail(), lastEditor);
}
} else if (outdated) {
logger.warn("Sessions:" + session + ":" + lockInfo.getSession() + ",Timestamp: " + timestamp + ": " + savedTimestamp);
// @Todo: Temporally disabled to unblock save action. More research needed.
// throw new MultipleSessionsOpenException("Sessions:" + session + ":" + lockInfo.getSession() + ",Timestamp: " + timestamp + ": " + savedTimestamp);
}
} else {
throw new SessionExpiredException("Different Users.", lockInfo.getUser());
}
}
}