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Make use of enhanced MessageHeaderAccessor support

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Mutate rather than re-create headers when decoding STOMP messages
before a message is sent on a message channel.

Use MessageBuilder.createMessage to ensure the fully prepared
MessageHeaders is used directly MessageHeaderAccessor instance.

Issue: SPR-11468
This commit is contained in:
Rossen Stoyanchev
2014-04-10 23:57:45 -04:00
parent 4867546aec
commit ae942ffdb8
22 changed files with 322 additions and 236 deletions
Download Patch File Download Diff File Expand all files Collapse all files

130
spring-websocket/src/main/java/org/springframework/web/socket/messaging/StompSubProtocolHandler.java
View File

@@ -41,9 +41,9 @@ import org.springframework.messaging.simp.stomp.StompConversionException;
import org.springframework.messaging.simp.stomp.StompEncoder;
import org.springframework.messaging.simp.stomp.StompHeaderAccessor;
import org.springframework.messaging.simp.user.DestinationUserNameProvider;
import org.springframework.messaging.simp.user.UserDestinationMessageHandler;
import org.springframework.messaging.simp.user.UserSessionRegistry;
import org.springframework.messaging.support.MessageBuilder;
import org.springframework.messaging.support.MessageHeaderAccessor;
import org.springframework.util.Assert;
import org.springframework.web.socket.CloseStatus;
import org.springframework.web.socket.TextMessage;
@@ -79,6 +79,8 @@ public class StompSubProtocolHandler implements SubProtocolHandler, ApplicationE
private static final Log logger = LogFactory.getLog(StompSubProtocolHandler.class);
private static final byte[] EMPTY_PAYLOAD = new byte[0];
private int messageSizeLimit = 64 * 1024;
@@ -172,9 +174,12 @@ public class StompSubProtocolHandler implements SubProtocolHandler, ApplicationE
for (Message<byte[]> message : messages) {
try {
StompHeaderAccessor headers = StompHeaderAccessor.wrap(message);
StompHeaderAccessor headerAccessor =
MessageHeaderAccessor.getAccessor(message, StompHeaderAccessor.class);
if (logger.isTraceEnabled()) {
if (SimpMessageType.HEARTBEAT.equals(headers.getMessageType())) {
if (headerAccessor.isHeartbeat()) {
logger.trace("Received heartbeat from client session=" + session.getId());
}
else {
@@ -182,13 +187,12 @@ public class StompSubProtocolHandler implements SubProtocolHandler, ApplicationE
}
}
headers.setSessionId(session.getId());
headers.setSessionAttributes(session.getAttributes());
headers.setUser(session.getPrincipal());
headerAccessor.setSessionId(session.getId());
headerAccessor.setSessionAttributes(session.getAttributes());
headerAccessor.setUser(session.getPrincipal());
headerAccessor.setImmutable();
message = MessageBuilder.withPayload(message.getPayload()).setHeaders(headers).build();
if (this.eventPublisher != null && StompCommand.CONNECT.equals(headers.getCommand())) {
if (this.eventPublisher != null && StompCommand.CONNECT.equals(headerAccessor.getCommand())) {
publishEvent(new SessionConnectEvent(this, message));
}
@@ -212,10 +216,9 @@ public class StompSubProtocolHandler implements SubProtocolHandler, ApplicationE
protected void sendErrorMessage(WebSocketSession session, Throwable error) {
StompHeaderAccessor headers = StompHeaderAccessor.create(StompCommand.ERROR);
headers.setMessage(error.getMessage());
Message<byte[]> message = MessageBuilder.withPayload(new byte[0]).setHeaders(headers).build();
byte[] bytes = this.stompEncoder.encode(message);
StompHeaderAccessor headerAccessor = StompHeaderAccessor.create(StompCommand.ERROR);
headerAccessor.setMessage(error.getMessage());
byte[] bytes = this.stompEncoder.encode(headerAccessor.getMessageHeaders(), EMPTY_PAYLOAD);
try {
session.sendMessage(new TextMessage(bytes));
}
@@ -231,46 +234,60 @@ public class StompSubProtocolHandler implements SubProtocolHandler, ApplicationE
@Override
public void handleMessageToClient(WebSocketSession session, Message<?> message) {
StompHeaderAccessor headers = StompHeaderAccessor.wrap(message);
if (headers.getMessageType() == SimpMessageType.CONNECT_ACK) {
StompHeaderAccessor connectedHeaders = StompHeaderAccessor.create(StompCommand.CONNECTED);
connectedHeaders.setVersion(getVersion(headers));
connectedHeaders.setHeartbeat(0, 0); // no heart-beat support with simple broker
headers = connectedHeaders;
}
else if (SimpMessageType.MESSAGE.equals(headers.getMessageType())) {
headers.updateStompCommandAsServerMessage();
}
if (headers.getCommand() == StompCommand.CONNECTED) {
afterStompSessionConnected(headers, session);
}
if (StompCommand.MESSAGE.equals(headers.getCommand())) {
if (headers.getSubscriptionId() == null) {
logger.error("Ignoring message, no subscriptionId header: " + message);
return;
}
String header = SimpMessageHeaderAccessor.ORIGINAL_DESTINATION;
if (message.getHeaders().containsKey(header)) {
headers.setDestination((String) message.getHeaders().get(header));
}
}
if (!(message.getPayload() instanceof byte[])) {
logger.error("Ignoring message, expected byte[] content: " + message);
return;
}
try {
message = MessageBuilder.withPayload(message.getPayload()).setHeaders(headers).build();
MessageHeaderAccessor accessor = MessageHeaderAccessor.getAccessor(message, MessageHeaderAccessor.class);
if (accessor == null) {
logger.error("No header accessor: " + message);
return;
}
if (this.eventPublisher != null && StompCommand.CONNECTED.equals(headers.getCommand())) {
StompHeaderAccessor stompAccessor;
if (accessor instanceof StompHeaderAccessor) {
stompAccessor = (StompHeaderAccessor) accessor;
}
else if (accessor instanceof SimpMessageHeaderAccessor) {
stompAccessor = StompHeaderAccessor.wrap(message);
if (SimpMessageType.CONNECT_ACK.equals(stompAccessor.getMessageType())) {
StompHeaderAccessor connectedHeaders = StompHeaderAccessor.create(StompCommand.CONNECTED);
connectedHeaders.setVersion(getVersion(stompAccessor));
connectedHeaders.setHeartbeat(0, 0); // no heart-beat support with simple broker
stompAccessor = connectedHeaders;
}
else if (stompAccessor.getCommand() == null || StompCommand.SEND.equals(stompAccessor.getCommand())) {
stompAccessor.updateStompCommandAsServerMessage();
}
}
else {
// Should not happen
logger.error("Unexpected header accessor type: " + accessor);
return;
}
StompCommand command = stompAccessor.getCommand();
if (StompCommand.MESSAGE.equals(command)) {
if (stompAccessor.getSubscriptionId() == null) {
logger.error("Ignoring message, no subscriptionId header: " + message);
return;
}
String header = SimpMessageHeaderAccessor.ORIGINAL_DESTINATION;
if (message.getHeaders().containsKey(header)) {
stompAccessor = toMutableAccessor(stompAccessor, message);
stompAccessor.setDestination((String) message.getHeaders().get(header));
}
}
else if (StompCommand.CONNECTED.equals(command)) {
stompAccessor = afterStompSessionConnected(message, stompAccessor, session);
if (this.eventPublisher != null && StompCommand.CONNECTED.equals(command)) {
publishEvent(new SessionConnectedEvent(this, (Message<byte[]>) message));
}
}
byte[] bytes = this.stompEncoder.encode((Message<byte[]>) message);
try {
byte[] bytes = this.stompEncoder.encode(stompAccessor.getMessageHeaders(), (byte[]) message.getPayload());
TextMessage textMessage = new TextMessage(bytes);
session.sendMessage(textMessage);
@@ -283,7 +300,7 @@ public class StompSubProtocolHandler implements SubProtocolHandler, ApplicationE
sendErrorMessage(session, ex);
}
finally {
if (StompCommand.ERROR.equals(headers.getCommand())) {
if (StompCommand.ERROR.equals(command)) {
try {
session.close(CloseStatus.PROTOCOL_ERROR);
}
@@ -294,13 +311,19 @@ public class StompSubProtocolHandler implements SubProtocolHandler, ApplicationE
}
}
protected StompHeaderAccessor toMutableAccessor(StompHeaderAccessor headerAccessor, Message<?> message) {
return (headerAccessor.isMutable() ? headerAccessor : StompHeaderAccessor.wrap(message));
}
private String getVersion(StompHeaderAccessor connectAckHeaders) {
String name = StompHeaderAccessor.CONNECT_MESSAGE_HEADER;
Message<?> connectMessage = (Message<?>) connectAckHeaders.getHeader(name);
StompHeaderAccessor connectHeaders = StompHeaderAccessor.wrap(connectMessage);
Assert.notNull(connectMessage, "CONNECT_ACK does not contain original CONNECT " + connectAckHeaders);
StompHeaderAccessor connectHeaders =
MessageHeaderAccessor.getAccessor(connectMessage, StompHeaderAccessor.class);
Set<String> acceptVersions = connectHeaders.getAcceptVersion();
if (acceptVersions.contains("1.2")) {
return "1.2";
@@ -316,16 +339,19 @@ public class StompSubProtocolHandler implements SubProtocolHandler, ApplicationE
}
}
private void afterStompSessionConnected(StompHeaderAccessor headers, WebSocketSession session) {
private StompHeaderAccessor afterStompSessionConnected(
Message<?> message, StompHeaderAccessor headerAccessor, WebSocketSession session) {
Principal principal = session.getPrincipal();
if (principal != null) {
headers.setNativeHeader(CONNECTED_USER_HEADER, principal.getName());
headerAccessor = toMutableAccessor(headerAccessor, message);
headerAccessor.setNativeHeader(CONNECTED_USER_HEADER, principal.getName());
if (this.userSessionRegistry != null) {
String userName = resolveNameForUserSessionRegistry(principal);
this.userSessionRegistry.registerSessionId(userName, session.getId());
}
}
long[] heartbeat = headers.getHeartbeat();
long[] heartbeat = headerAccessor.getHeartbeat();
if (heartbeat[1] > 0) {
session = WebSocketSessionDecorator.unwrap(session);
if (session instanceof SockJsSession) {
@@ -333,6 +359,7 @@ public class StompSubProtocolHandler implements SubProtocolHandler, ApplicationE
((SockJsSession) session).disableHeartbeat();
}
}
return headerAccessor;
}
private String resolveNameForUserSessionRegistry(Principal principal) {
@@ -345,8 +372,7 @@ public class StompSubProtocolHandler implements SubProtocolHandler, ApplicationE
@Override
public String resolveSessionId(Message<?> message) {
StompHeaderAccessor headers = StompHeaderAccessor.wrap(message);
return headers.getSessionId();
return SimpMessageHeaderAccessor.getSessionId(message.getHeaders());
}
@Override
@@ -374,7 +400,7 @@ public class StompSubProtocolHandler implements SubProtocolHandler, ApplicationE
StompHeaderAccessor headers = StompHeaderAccessor.create(StompCommand.DISCONNECT);
headers.setSessionId(session.getId());
Message<?> message = MessageBuilder.withPayload(new byte[0]).setHeaders(headers).build();
Message<?> message = MessageBuilder.createMessage(EMPTY_PAYLOAD, headers.getMessageHeaders());
if (this.eventPublisher != null) {
publishEvent(new SessionDisconnectEvent(this, session.getId(), closeStatus));