| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 |
| * |
| * http://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.apache.catalina.ha.session; |
| |
| |
| import org.apache.catalina.ha.ClusterMessageBase; |
| |
| /** |
| * Session cluster message |
| * |
| * @author Peter Rossbach |
| */ |
| public class SessionMessageImpl extends ClusterMessageBase implements SessionMessage { |
| |
| private static final long serialVersionUID = 2L; |
| |
| |
| /* |
| * Private serializable variables to keep the messages state |
| */ |
| private final int mEvtType; |
| private final byte[] mSession; |
| private final String mSessionID; |
| |
| private final String mContextName; |
| private long serializationTimestamp; |
| private boolean timestampSet = false ; |
| private String uniqueId; |
| |
| |
| private SessionMessageImpl( String contextName, |
| int eventtype, |
| byte[] session, |
| String sessionID) |
| { |
| mEvtType = eventtype; |
| mSession = session; |
| mSessionID = sessionID; |
| mContextName = contextName; |
| uniqueId = sessionID; |
| } |
| |
| /** |
| * Creates a session message. Depending on what event type you want this |
| * message to represent, you populate the different parameters in the constructor<BR> |
| * The following rules apply dependent on what event type argument you use:<BR> |
| * <B>EVT_SESSION_CREATED</B><BR> |
| * The parameters: session, sessionID must be set.<BR> |
| * <B>EVT_SESSION_EXPIRED</B><BR> |
| * The parameters: sessionID must be set.<BR> |
| * <B>EVT_SESSION_ACCESSED</B><BR> |
| * The parameters: sessionID must be set.<BR> |
| * <B>EVT_GET_ALL_SESSIONS</B><BR> |
| * get all sessions from from one of the nodes.<BR> |
| * <B>EVT_SESSION_DELTA</B><BR> |
| * Send attribute delta (add,update,remove attribute or principal, ...).<BR> |
| * <B>EVT_ALL_SESSION_DATA</B><BR> |
| * Send complete serializes session list<BR> |
| * <B>EVT_ALL_SESSION_TRANSFERCOMPLETE</B><BR> |
| * send that all session state information are transfered |
| * after GET_ALL_SESSION received from this sender.<BR> |
| * <B>EVT_CHANGE_SESSION_ID</B><BR> |
| * send original sessionID and new sessionID.<BR> |
| * <B>EVT_ALL_SESSION_NOCONTEXTMANAGER</B><BR> |
| * send that context manager does not exist |
| * after GET_ALL_SESSION received from this sender.<BR> |
| * @param contextName - the name of the context (application |
| * @param eventtype - one of the 8 event type defined in this class |
| * @param session - the serialized byte array of the session itself |
| * @param sessionID - the id that identifies this session |
| * @param uniqueID - the id that identifies this message |
| */ |
| public SessionMessageImpl( String contextName, |
| int eventtype, |
| byte[] session, |
| String sessionID, |
| String uniqueID) |
| { |
| this(contextName,eventtype,session,sessionID); |
| uniqueId = uniqueID; |
| } |
| |
| /** |
| * returns the event type |
| * @return one of the event types EVT_XXXX |
| */ |
| @Override |
| public int getEventType() { return mEvtType; } |
| |
| /** |
| * @return the serialized data for the session |
| */ |
| @Override |
| public byte[] getSession() { return mSession;} |
| |
| /** |
| * @return the session ID for the session |
| */ |
| @Override |
| public String getSessionID(){ return mSessionID; } |
| |
| /** |
| * set message send time but only the first setting works (one shot) |
| */ |
| @Override |
| public void setTimestamp(long time) { |
| synchronized(this) { |
| if(!timestampSet) { |
| serializationTimestamp=time; |
| timestampSet = true ; |
| } |
| } |
| } |
| |
| @Override |
| public long getTimestamp() { return serializationTimestamp;} |
| |
| /** |
| * clear text event type name (for logging purpose only) |
| * @return the event type in a string representation, useful for debugging |
| */ |
| @Override |
| public String getEventTypeString() |
| { |
| switch (mEvtType) |
| { |
| case EVT_SESSION_CREATED : return "SESSION-MODIFIED"; |
| case EVT_SESSION_EXPIRED : return "SESSION-EXPIRED"; |
| case EVT_SESSION_ACCESSED : return "SESSION-ACCESSED"; |
| case EVT_GET_ALL_SESSIONS : return "SESSION-GET-ALL"; |
| case EVT_SESSION_DELTA : return "SESSION-DELTA"; |
| case EVT_ALL_SESSION_DATA : return "ALL-SESSION-DATA"; |
| case EVT_ALL_SESSION_TRANSFERCOMPLETE : return "SESSION-STATE-TRANSFERED"; |
| case EVT_CHANGE_SESSION_ID : return "SESSION-ID-CHANGED"; |
| case EVT_ALL_SESSION_NOCONTEXTMANAGER : return "NO-CONTEXT-MANAGER"; |
| default : return "UNKNOWN-EVENT-TYPE"; |
| } |
| } |
| |
| @Override |
| public String getContextName() { |
| return mContextName; |
| } |
| |
| @Override |
| public String getUniqueId() { |
| return uniqueId; |
| } |
| |
| @Override |
| public String toString() { |
| return getEventTypeString() + "#" + getContextName() + "#" + getSessionID() ; |
| } |
| } |