/*
 * Copyright 2002-2013 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.web.socket.sockjs;

import java.util.List;

/**
 * An exception thrown when a message frame was successfully received over an HTTP POST
 * and parsed but one or more of the messages it contained could not be delivered to the
 * WebSocketHandler either because the handler failed or because the connection got
 * closed.
 *
 * <p>The SockJS session is not automatically closed after this exception.
 *
 * @author Rossen Stoyanchev
 * @since 4.0
 */
@SuppressWarnings("serial")
public class SockJsMessageDeliveryException extends SockJsException {

	private final List<String> undeliveredMessages;


	public SockJsMessageDeliveryException(String sessionId, List<String> undeliveredMessages, Throwable cause) {
		super("Failed to deliver message(s) " + undeliveredMessages + " for session " + sessionId, sessionId, cause);
		this.undeliveredMessages = undeliveredMessages;
	}

	public SockJsMessageDeliveryException(String sessionId, List<String> undeliveredMessages, String message) {
		super("Failed to deliver message(s) " + undeliveredMessages + " for session "
				+ sessionId + ": " + message, sessionId, null);
		this.undeliveredMessages = undeliveredMessages;
	}

	public List<String> getUndeliveredMessages() {
		return this.undeliveredMessages;
	}

}
