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Optimize DefaultUserDestinationResolver.resolveDestination() 

Issue: SPR-15602
This commit is contained in:
Christoph Dreis 2017-05-31 16:55:33 +02:00 committed by Rossen Stoyanchev
parent 1412c2c577
commit 0ef1623643
1 changed files with 71 additions and 48 deletions
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65
spring-messaging/src/main/java/org/springframework/messaging/simp/user/DefaultUserDestinationResolver.java
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@ -121,12 +121,12 @@ public class DefaultUserDestinationResolver implements UserDestinationResolver {
@Override
public UserDestinationResult resolveDestination(Message<?> message) {
String sourceDestination = SimpMessageHeaderAccessor.getDestination(message.getHeaders());
ParseResult parseResult = parse(message);
if (parseResult == null) {
return null;
}
String user = parseResult.getUser();
String sourceDestination = parseResult.getSourceDestination();
Set<String> targetSet = new HashSet<>();
for (String sessionId : parseResult.getSessionIds()) {
String actualDestination = parseResult.getActualDestination();
@ -142,40 +142,64 @@ public class DefaultUserDestinationResolver implements UserDestinationResolver {
@Nullable
private ParseResult parse(Message<?> message) {
MessageHeaders headers = message.getHeaders();
String destination = SimpMessageHeaderAccessor.getDestination(headers);
if (destination == null || !checkDestination(destination, this.prefix)) {
String sourceDestination = SimpMessageHeaderAccessor.getDestination(headers);
if (sourceDestination == null || !checkDestination(sourceDestination, this.prefix)) {
return null;
}
SimpMessageType messageType = SimpMessageHeaderAccessor.getMessageType(headers);
Principal principal = SimpMessageHeaderAccessor.getUser(headers);
switch (messageType) {
case SUBSCRIBE:
case UNSUBSCRIBE:
return parseSubscriptionMessage(message, headers, sourceDestination);
case MESSAGE:
return parseMessage(headers, sourceDestination);
default:
return null;
}
}
private ParseResult parseSubscriptionMessage(Message<?> message, MessageHeaders headers, String sourceDestination) {
String sessionId = SimpMessageHeaderAccessor.getSessionId(headers);
if (SimpMessageType.SUBSCRIBE.equals(messageType) || SimpMessageType.UNSUBSCRIBE.equals(messageType)) {
if (sessionId == null) {
logger.error("No session id. Ignoring " + message);
return null;
}
int prefixEnd = this.prefix.length() - 1;
String actualDestination = destination.substring(prefixEnd);
String actualDestination = sourceDestination.substring(prefixEnd);
if (!this.keepLeadingSlash) {
actualDestination = actualDestination.substring(1);
}
Principal principal = SimpMessageHeaderAccessor.getUser(headers);
String user = (principal != null ? principal.getName() : null);
return new ParseResult(actualDestination, destination, Collections.singleton(sessionId), user);
Set<String> sessionIds = Collections.singleton(sessionId);
return new ParseResult(sourceDestination, actualDestination, sourceDestination, sessionIds, user);
}
else if (SimpMessageType.MESSAGE.equals(messageType)) {
private ParseResult parseMessage(MessageHeaders headers, String sourceDestination) {
int prefixEnd = this.prefix.length();
int userEnd = destination.indexOf('/', prefixEnd);
int userEnd = sourceDestination.indexOf('/', prefixEnd);
Assert.isTrue(userEnd > 0, "Expected destination pattern \"/user/{userId}/**\"");
String actualDestination = destination.substring(userEnd);
String actualDestination = sourceDestination.substring(userEnd);
String subscribeDestination = this.prefix.substring(0, prefixEnd - 1) + actualDestination;
String userName = destination.substring(prefixEnd, userEnd);
String userName = sourceDestination.substring(prefixEnd, userEnd);
userName = StringUtils.replace(userName, "%2F", "/");
String sessionId = SimpMessageHeaderAccessor.getSessionId(headers);
Set<String> sessionIds;
if (userName.equals(sessionId)) {
userName = null;
sessionIds = Collections.singleton(sessionId);
}
else {
sessionIds = getSessionIdsByUser(userName, sessionId);
}
if (!this.keepLeadingSlash) {
actualDestination = actualDestination.substring(1);
}
return new ParseResult(sourceDestination, actualDestination, subscribeDestination, sessionIds, userName);
}
private Set<String> getSessionIdsByUser(String userName, String sessionId) {
Set<String> sessionIds;
SimpUser user = this.userRegistry.getUser(userName);
if (user != null) {
if (user.getSession(sessionId) != null) {
@ -192,15 +216,7 @@ public class DefaultUserDestinationResolver implements UserDestinationResolver {
else {
sessionIds = Collections.emptySet();
}
}
if (!this.keepLeadingSlash) {
actualDestination = actualDestination.substring(1);
}
return new ParseResult(actualDestination, subscribeDestination, sessionIds, userName);
}
else {
return null;
}
return sessionIds;
}
protected boolean checkDestination(String destination, String requiredPrefix) {
@ -243,8 +259,11 @@ public class DefaultUserDestinationResolver implements UserDestinationResolver {
private final String user;
private final String sourceDestination;
public ParseResult(String actualDest, String subscribeDest, Set<String> sessionIds, String user) {
public ParseResult(String sourceDest, String actualDest, String subscribeDest,
Set<String> sessionIds, String user) {
this.sourceDestination = sourceDest;
this.actualDestination = actualDest;
this.subscribeDestination = subscribeDest;
this.sessionIds = sessionIds;
@ -267,6 +286,10 @@ public class DefaultUserDestinationResolver implements UserDestinationResolver {
public String getUser() {
return this.user;
}
public String getSourceDestination() {
return this.sourceDestination;
}
}
}