// $Id: Event.java,v 1.24.2.1 2006/12/04 22:47:16 vlada Exp $
package org.jgroups;
/**
* Used for inter-stack and intra-stack communication.
* @author Bela Ban
*/
public class Event {
public static final int MSG = 1; // arg = Message
public static final int CONNECT = 2; // arg = group address (string)
public static final int CONNECT_OK = 3; // arg = null (or exception if JOIN failed)
public static final int DISCONNECT = 4; // arg = member address (Address)
public static final int DISCONNECT_OK = 5;
public static final int VIEW_CHANGE = 6; // arg = View (or MergeView in case of merge)
public static final int GET_LOCAL_ADDRESS = 7;
public static final int SET_LOCAL_ADDRESS = 8;
public static final int SUSPECT = 9; // arg = Address of suspected member
public static final int BLOCK = 10;
public static final int BLOCK_OK = 11;
public static final int FIND_INITIAL_MBRS = 12;
public static final int FIND_INITIAL_MBRS_OK = 13; // arg = Vector of PingRsps
public static final int MERGE = 14; // arg = Vector of Objects
public static final int TMP_VIEW = 15; // arg = View
public static final int BECOME_SERVER = 16; // sent when client has joined group
public static final int GET_APPLSTATE = 17; // get state from appl (arg=StateTransferInfo)
public static final int GET_APPLSTATE_OK = 18; // arg = StateTranferInfo (includes state)
public static final int GET_STATE = 19; // arg = StateTransferInfo
public static final int GET_STATE_OK = 20; // arg = StateTransferInfo
public static final int STATE_RECEIVED = 21; // arg = StateTransferInfo (with state and state_id)
public static final int START_QUEUEING = 22;
public static final int STOP_QUEUEING = 23; // arg = Vector (event-list)
public static final int SWITCH_NAK = 24;
public static final int SWITCH_NAK_ACK = 25;
public static final int SWITCH_OUT_OF_BAND = 26;
public static final int FLUSH = 27; // arg = Vector (destinatinon for FLUSH)
public static final int FLUSH_OK = 28; // arg = FlushRsp
public static final int DROP_NEXT_MSG = 29;
public static final int STABLE = 30; // arg = long[] (stable seqnos for mbrs)
public static final int GET_MSG_DIGEST = 31; // arg = long[] (highest seqnos from mbrs)
public static final int GET_MSG_DIGEST_OK = 32; // arg = Digest
public static final int REBROADCAST_MSGS = 33; // arg = Vector (msgs with NakAckHeader)
public static final int REBROADCAST_MSGS_OK = 34;
public static final int GET_MSGS_RECEIVED = 35;
public static final int GET_MSGS_RECEIVED_OK = 36; // arg = long[] (highest deliverable seqnos)
public static final int GET_MSGS = 37; // arg = long[][] (range of seqnos for each m.)
public static final int GET_MSGS_OK = 38; // arg = List
public static final int GET_DIGEST = 39; //
public static final int GET_DIGEST_OK = 40; // arg = Digest (response to GET_DIGEST)
public static final int SET_DIGEST = 41; // arg = Digest
public static final int GET_DIGEST_STATE = 42; // see ./JavaStack/Protocols/pbcast/DESIGN for explanantion
public static final int GET_DIGEST_STATE_OK = 43; // see ./JavaStack/Protocols/pbcast/DESIGN for explanantion
public static final int SET_PARTITIONS = 44; // arg = Hashtable of addresses and numbers
public static final int MERGE_DENIED = 45; // Passed down from gms when a merge attempt fails
public static final int EXIT = 46; // received when member was forced out of the group
public static final int PERF = 47; // for performance measurements
public static final int SUBVIEW_MERGE = 48; // arg = vector of addresses; see JGroups/EVS/Readme.txt
public static final int SUBVIEWSET_MERGE = 49; // arg = vector of addresses; see JGroups/EVS/Readme.txt
public static final int HEARD_FROM = 50; // arg = Vector (list of Addresses)
public static final int UNSUSPECT = 51; // arg = Address (of unsuspected member)
public static final int SET_PID = 52; // arg = Integer (process id)
public static final int MERGE_DIGEST = 53; // arg = Digest
public static final int CONFIG = 56; // arg = HashMap (config properties)
public static final int GET_DIGEST_STABLE = 57;
public static final int GET_DIGEST_STABLE_OK = 58; // response to GET_DIGEST_STABLE
// public static final int ACK = 59; // used to flush down events
// public static final int ACK_OK = 60; // response to ACK
public static final int START = 61; // triggers start() - internal event, handled by Protocol
public static final int START_OK = 62; // arg = exception of null - internal event, handled by Protocol
public static final int STOP = 63; // triggers stop() - internal event, handled by Protocol
public static final int STOP_OK = 64; // arg = exception or null - internal event, handled by Protocol
public static final int SUSPEND_STABLE = 65; // arg = Long (max_suspend_time)
public static final int RESUME_STABLE = 66; // arg = null
public static final int ENABLE_UNICASTS_TO = 67; // arg = Address (member)
public static final int SUSPEND = 68; // arg = View|null
public static final int SUSPEND_OK = 69; // arg = null
public static final int RESUME = 70; // arg = null
public static final int STATE_TRANSFER_INPUTSTREAM= 71; // arg=java.io.InputStream subclass
public static final int STATE_TRANSFER_OUTPUTSTREAM= 72; // arg=java.io.OutputStream subclass
public static final int STATE_TRANSFER_INPUTSTREAM_CLOSED= 73;//arg=null
public static final int STATE_TRANSFER_OUTPUTSTREAM_CLOSED= 74;//arg=null
public static final int UNBLOCK =75; //arg=null (indicate end of flush round)
public static final int SUSPEND_FAILED =76; // arg = null
public static final int USER_DEFINED=1000;// arg = <user def., e.g. evt type + data>
private int type; // type of event
private Object arg; // must be serializable if used for inter-stack communication
public Event(int type) {
this.type=type;
}
public Event(int type, Object arg) {
this.type=type;
this.arg=arg;
}
public int getType() {
return type;
}
public void setType(int type) {
this.type=type;
}
public Object getArg() {
return arg;
}
public void setArg(Object arg) {
this.arg=arg;
}
public static String type2String(int t) {
switch(t) {
case MSG: return "MSG";
case CONNECT: return "CONNECT";
case CONNECT_OK: return "CONNECT_OK";
case DISCONNECT: return "DISCONNECT";
case DISCONNECT_OK: return "DISCONNECT_OK";
case VIEW_CHANGE: return "VIEW_CHANGE";
case GET_LOCAL_ADDRESS: return "GET_LOCAL_ADDRESS";
case SET_LOCAL_ADDRESS: return "SET_LOCAL_ADDRESS";
case SUSPECT: return "SUSPECT";
case BLOCK: return "BLOCK";
case BLOCK_OK: return "BLOCK_OK";
case FIND_INITIAL_MBRS: return "FIND_INITIAL_MBRS";
case FIND_INITIAL_MBRS_OK: return "FIND_INITIAL_MBRS_OK";
case TMP_VIEW: return "TMP_VIEW";
case BECOME_SERVER: return "BECOME_SERVER";
case GET_APPLSTATE: return "GET_APPLSTATE";
case GET_APPLSTATE_OK: return "GET_APPLSTATE_OK";
case GET_STATE: return "GET_STATE";
case GET_STATE_OK: return "GET_STATE_OK";
case STATE_RECEIVED: return "STATE_RECEIVED";
case START_QUEUEING: return "START_QUEUEING";
case STOP_QUEUEING: return "STOP_QUEUEING";
case SWITCH_NAK: return "SWITCH_NAK";
case SWITCH_NAK_ACK: return "SWITCH_NAK_ACK";
case SWITCH_OUT_OF_BAND: return "SWITCH_OUT_OF_BAND";
case FLUSH: return "FLUSH";
case FLUSH_OK: return "FLUSH_OK";
case DROP_NEXT_MSG: return "DROP_NEXT_MSG";
case STABLE: return "STABLE";
case GET_MSG_DIGEST: return "GET_MSG_DIGEST";
case GET_MSG_DIGEST_OK: return "GET_MSG_DIGEST_OK";
case REBROADCAST_MSGS: return "REBROADCAST_MSGS";
case REBROADCAST_MSGS_OK: return "REBROADCAST_MSGS_OK";
case GET_MSGS_RECEIVED: return "GET_MSGS_RECEIVED";
case GET_MSGS_RECEIVED_OK: return "GET_MSGS_RECEIVED_OK";
case GET_MSGS: return "GET_MSGS";
case GET_MSGS_OK: return "GET_MSGS_OK";
case GET_DIGEST: return "GET_DIGEST";
case GET_DIGEST_OK: return "GET_DIGEST_OK";
case SET_DIGEST: return "SET_DIGEST";
case GET_DIGEST_STATE: return "GET_DIGEST_STATE";
case GET_DIGEST_STATE_OK: return "GET_DIGEST_STATE_OK";
case SET_PARTITIONS: return "SET_PARTITIONS"; // Added by gianlucac@tin.it to support PARTITIONER
case MERGE: return "MERGE"; // Added by gianlucac@tin.it to support partitions merging in GMS
case MERGE_DENIED: return "MERGE_DENIED";// as above
case EXIT: return "EXIT";
case PERF: return "PERF";
case SUBVIEW_MERGE: return "SUBVIEW_MERGE";
case SUBVIEWSET_MERGE: return "SUBVIEWSET_MERGE";
case HEARD_FROM: return "HEARD_FROM";
case UNSUSPECT: return "UNSUSPECT";
case SET_PID: return "SET_PID";
case MERGE_DIGEST: return "MERGE_DIGEST";
case CONFIG: return "CONFIG";
case GET_DIGEST_STABLE: return "GET_DIGEST_STABLE";
case GET_DIGEST_STABLE_OK: return "GET_DIGEST_STABLE_OK";
// case ACK: return "ACK";
// case ACK_OK: return "ACK_OK";
case START: return "START";
case START_OK: return "START_OK";
case STOP: return "STOP";
case STOP_OK: return "STOP_OK";
case SUSPEND_STABLE: return "SUSPEND_STABLE";
case RESUME_STABLE: return "RESUME_STABLE";
case ENABLE_UNICASTS_TO: return "ENABLE_UNICASTS_TO";
case SUSPEND: return "SUSPEND";
case SUSPEND_OK: return "SUSPEND_OK";
case RESUME: return "RESUME";
case STATE_TRANSFER_INPUTSTREAM: return "STATE_TRANSFER_INPUTSTREAM";
case STATE_TRANSFER_OUTPUTSTREAM:return "STATE_TRANSFER_OUTPUTSTREAM";
case STATE_TRANSFER_INPUTSTREAM_CLOSED: return "STATE_TRANSFER_INPUTSTREAM_CLOSED";
case STATE_TRANSFER_OUTPUTSTREAM_CLOSED: return "STATE_TRANSFER_OUTPUTSTREAM_CLOSED";
case UNBLOCK: return "UNBLOCK";
case SUSPEND_FAILED: return "SUSPEND_FAILED";
case USER_DEFINED: return "USER_DEFINED";
default: return "UNDEFINED(" + t + ")";
}
}
public static final Event FIND_INITIAL_MBRS_EVT = new Event(Event.FIND_INITIAL_MBRS);
public static final Event GET_DIGEST_EVT = new Event(Event.GET_DIGEST);
public String toString() {
StringBuffer ret=new StringBuffer(64);
ret.append("Event[type=" + type2String(type) + ", arg=" + arg + ']');
return ret.toString();
}
}
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