Java MemberImpl类代码示例

import org.apache.catalina.tribes.membership.MemberImpl; //导入依赖的package包/类
@Override
public void memberAdded(Member member) {
    if ( membership == null ) setupMembership();
    boolean notify = false;
    synchronized (membership) {
        if (removeSuspects.containsKey(member)) {
            //previously marked suspect, system below picked up the member again
            removeSuspects.remove(member);
        } else if (membership.getMember(member) == null){
            //if we add it here, then add it upwards too
            //check to see if it is alive
            if (memberAlive(member)) {
                membership.memberAlive( (MemberImpl) member);
                notify = true;
            } else {
                addSuspects.put(member, Long.valueOf(System.currentTimeMillis()));
            }
        }
    }
    if ( notify ) super.memberAdded(member);
}
 

import org.apache.catalina.tribes.membership.MemberImpl; //导入依赖的package包/类
protected void performForcedCheck() {
    //update all alive times
    Member[] members = super.getMembers();
    for (int i = 0; members != null && i < members.length; i++) {
        if (memberAlive(members[i])) {
            if (membership.memberAlive((MemberImpl)members[i])) super.memberAdded(members[i]);
            addSuspects.remove(members[i]);
        } else {
            if (membership.getMember(members[i])!=null) {
                membership.removeMember((MemberImpl)members[i]);
                removeSuspects.remove(members[i]);
                if (members[i] instanceof StaticMember) {
                    addSuspects.put(members[i], Long.valueOf(System.currentTimeMillis()));
                }
                super.memberDisappeared(members[i]);
            }
        } //end if
    } //for

}
 

import org.apache.catalina.tribes.membership.MemberImpl; //导入依赖的package包/类
protected void sendElectionMsgToNextInline(MemberImpl local, CoordinationMessage msg) throws ChannelException { 
    int next = Arrays.nextIndex(local,msg.getMembers());
    int current = next;
    msg.leader = msg.getMembers()[0];
    boolean sent =  false;
    while ( !sent && current >= 0 ) {
        try {
            sendElectionMsg(local, msg.getMembers()[current], msg);
            sent = true;
        }catch ( ChannelException x  ) {
            log.warn("Unable to send election message to:"+msg.getMembers()[current]);
            current = Arrays.nextIndex(msg.getMembers()[current],msg.getMembers());
            if ( current == next ) throw x;
        }
    }
}
 

import org.apache.catalina.tribes.membership.MemberImpl; //导入依赖的package包/类
protected void handleMyToken(MemberImpl local, CoordinationMessage msg, Member sender,Membership merged) throws ChannelException {
    if ( local.equals(msg.getLeader()) ) {
        //no leadership change
        if ( Arrays.sameMembers(msg.getMembers(),merged.getMembers()) ) {
            msg.type = COORD_CONF;
            super.sendMessage(Arrays.remove(msg.getMembers(),local),createData(msg,local),null);
            handleViewConf(msg,local,merged);
        } else {
            //membership change
            suggestedView = new Membership(local,AbsoluteOrder.comp,true);
            suggestedviewId = msg.getId();
            Arrays.fill(suggestedView,merged.getMembers());
            msg.view = merged.getMembers();
            sendElectionMsgToNextInline(local,msg);
        }
    } else {
        //leadership change
        suggestedView = null;
        suggestedviewId = null;
        msg.view = merged.getMembers();
        sendElectionMsgToNextInline(local,msg);
    }
}
 

import org.apache.catalina.tribes.membership.MemberImpl; //导入依赖的package包/类
protected void handleViewConf(CoordinationMessage msg, Member sender,Membership merged) throws ChannelException {
    if ( viewId != null && msg.getId().equals(viewId) ) return;//we already have this view
    view = new Membership((MemberImpl)getLocalMember(false),AbsoluteOrder.comp,true);
    Arrays.fill(view,msg.getMembers());
    viewId = msg.getId();
    
    if ( viewId.equals(suggestedviewId) ) {
        suggestedView = null;
        suggestedviewId = null;
    }
    
    if (suggestedView != null && AbsoluteOrder.comp.compare(suggestedView.getMembers()[0],merged.getMembers()[0])<0 ) {
        suggestedView = null;
        suggestedviewId = null;
    }
    
    viewChange(viewId,view.getMembers());
    fireInterceptorEvent(new CoordinationEvent(CoordinationEvent.EVT_CONF_RX,this,"Accepted View"));
    
    if ( suggestedviewId == null && hasHigherPriority(merged.getMembers(),membership.getMembers()) ) {
        startElection(false);
    }
}
 

import org.apache.catalina.tribes.membership.MemberImpl; //导入依赖的package包/类
@Override
public void memberDisappeared(Member member) {
    try {
        
        membership.removeMember((MemberImpl)member);
        super.memberDisappeared(member);
        try {
            fireInterceptorEvent(new CoordinationEvent(CoordinationEvent.EVT_MBR_DEL,this,"Member remove("+member.getName()+")"));
            if ( started && (isCoordinator() || isHighest()) ) 
                startElection(true); //to do, if a member disappears, only the coordinator can start
        }catch ( ChannelException x ) {
            log.error("Unable to start election when member was removed.",x);
        }
    }finally {
    }
}
 

import org.apache.catalina.tribes.membership.MemberImpl; //导入依赖的package包/类
@Override
public void heartbeat() {
    try {
        MemberImpl local = (MemberImpl)getLocalMember(false);
        if ( view != null && (Arrays.diff(view,membership,local).length != 0 ||  Arrays.diff(membership,view,local).length != 0) ) {
            if ( isHighest() ) {
                fireInterceptorEvent(new CoordinationEvent(CoordinationEvent.EVT_START_ELECT, this,
                                                           "Heartbeat found inconsistency, restart election"));
                startElection(true);
            }            
        }
    } catch ( Exception x  ){
        log.error("Unable to perform heartbeat.",x);
    } finally {
        super.heartbeat();
    }
}
 

import org.apache.catalina.tribes.membership.MemberImpl; //导入依赖的package包/类
public byte[] getDataPackage(byte[] data, int offset)  {
    byte[] addr = ((MemberImpl)address).getData(false);
    XByteBuffer.toBytes(options,data,offset);
    offset += 4; //options
    XByteBuffer.toBytes(timestamp,data,offset);
    offset += 8; //timestamp
    XByteBuffer.toBytes(uniqueId.length,data,offset);
    offset += 4; //uniqueId.length
    System.arraycopy(uniqueId,0,data,offset,uniqueId.length);
    offset += uniqueId.length; //uniqueId data
    XByteBuffer.toBytes(addr.length,data,offset);
    offset += 4; //addr.length
    System.arraycopy(addr,0,data,offset,addr.length);
    offset += addr.length; //addr data
    XByteBuffer.toBytes(message.getLength(),data,offset);
    offset += 4; //message.length
    System.arraycopy(message.getBytesDirect(),0,data,offset,message.getLength());
    offset += message.getLength(); //message data
    return data;
}
 

import org.apache.catalina.tribes.membership.MemberImpl; //导入依赖的package包/类
public static ChannelData getDataFromPackage(byte[] b)  {
    ChannelData data = new ChannelData(false);
    int offset = 0;
    data.setOptions(XByteBuffer.toInt(b,offset));
    offset += 4; //options
    data.setTimestamp(XByteBuffer.toLong(b,offset));
    offset += 8; //timestamp
    data.uniqueId = new byte[XByteBuffer.toInt(b,offset)];
    offset += 4; //uniqueId length
    System.arraycopy(b,offset,data.uniqueId,0,data.uniqueId.length);
    offset += data.uniqueId.length; //uniqueId data
    byte[] addr = new byte[XByteBuffer.toInt(b,offset)];
    offset += 4; //addr length
    System.arraycopy(b,offset,addr,0,addr.length);
    data.setAddress(MemberImpl.getMember(addr));
    offset += addr.length; //addr data
    int xsize = XByteBuffer.toInt(b,offset);
    //data.message = new XByteBuffer(new byte[xsize],false);
    data.message = BufferPool.getBufferPool().getBuffer(xsize,false);
    offset += 4; //message length
    System.arraycopy(b,offset,data.message.getBytesDirect(),0,xsize);
    data.message.append(b,offset,xsize);
    offset += xsize; //message data
    return data;
}
 

import org.apache.catalina.tribes.membership.MemberImpl; //导入依赖的package包/类
@Override
public void memberAdded(Member member) {
	if (membership == null)
		setupMembership();
	boolean notify = false;
	synchronized (membership) {
		if (removeSuspects.containsKey(member)) {
			// previously marked suspect, system below picked up the member
			// again
			removeSuspects.remove(member);
		} else if (membership.getMember(member) == null) {
			// if we add it here, then add it upwards too
			// check to see if it is alive
			if (memberAlive(member)) {
				membership.memberAlive((MemberImpl) member);
				notify = true;
			} else {
				addSuspects.put(member, Long.valueOf(System.currentTimeMillis()));
			}
		}
	}
	if (notify)
		super.memberAdded(member);
}
 

import org.apache.catalina.tribes.membership.MemberImpl; //导入依赖的package包/类
protected void performForcedCheck() {
	// update all alive times
	Member[] members = super.getMembers();
	for (int i = 0; members != null && i < members.length; i++) {
		if (memberAlive(members[i])) {
			if (membership.memberAlive((MemberImpl) members[i]))
				super.memberAdded(members[i]);
			addSuspects.remove(members[i]);
		} else {
			if (membership.getMember(members[i]) != null) {
				membership.removeMember((MemberImpl) members[i]);
				removeSuspects.remove(members[i]);
				if (members[i] instanceof StaticMember) {
					addSuspects.put(members[i], Long.valueOf(System.currentTimeMillis()));
				}
				super.memberDisappeared(members[i]);
			}
		} // end if
	} // for

}
 

import org.apache.catalina.tribes.membership.MemberImpl; //导入依赖的package包/类
public static ChannelData getDataFromPackage(byte[] b) {
	ChannelData data = new ChannelData(false);
	int offset = 0;
	data.setOptions(XByteBuffer.toInt(b, offset));
	offset += 4; // options
	data.setTimestamp(XByteBuffer.toLong(b, offset));
	offset += 8; // timestamp
	data.uniqueId = new byte[XByteBuffer.toInt(b, offset)];
	offset += 4; // uniqueId length
	System.arraycopy(b, offset, data.uniqueId, 0, data.uniqueId.length);
	offset += data.uniqueId.length; // uniqueId data
	byte[] addr = new byte[XByteBuffer.toInt(b, offset)];
	offset += 4; // addr length
	System.arraycopy(b, offset, addr, 0, addr.length);
	data.setAddress(MemberImpl.getMember(addr));
	offset += addr.length; // addr data
	int xsize = XByteBuffer.toInt(b, offset);
	// data.message = new XByteBuffer(new byte[xsize],false);
	data.message = BufferPool.getBufferPool().getBuffer(xsize, false);
	offset += 4; // message length
	System.arraycopy(b, offset, data.message.getBytesDirect(), 0, xsize);
	data.message.append(b, offset, xsize);
	offset += xsize; // message data
	return data;
}
 

import org.apache.catalina.tribes.membership.MemberImpl; //导入依赖的package包/类
protected void sendElectionMsgToNextInline(MemberImpl local, CoordinationMessage msg) throws ChannelException {
	int next = Arrays.nextIndex(local, msg.getMembers());
	int current = next;
	msg.leader = msg.getMembers()[0];
	boolean sent = false;
	while (!sent && current >= 0) {
		try {
			sendElectionMsg(local, msg.getMembers()[current], msg);
			sent = true;
		} catch (ChannelException x) {
			log.warn("Unable to send election message to:" + msg.getMembers()[current]);
			current = Arrays.nextIndex(msg.getMembers()[current], msg.getMembers());
			if (current == next)
				throw x;
		}
	}
}
 

import org.apache.catalina.tribes.membership.MemberImpl; //导入依赖的package包/类
protected Membership mergeOnArrive(CoordinationMessage msg, Member sender) {
	fireInterceptorEvent(new CoordinationEvent(CoordinationEvent.EVT_PRE_MERGE, this, "Pre merge"));
	MemberImpl local = (MemberImpl) getLocalMember(false);
	Membership merged = new Membership(local, AbsoluteOrder.comp, true);
	Arrays.fill(merged, msg.getMembers());
	Arrays.fill(merged, getMembers());
	Member[] diff = Arrays.diff(merged, membership, local);
	for (int i = 0; i < diff.length; i++) {
		if (!alive(diff[i]))
			merged.removeMember((MemberImpl) diff[i]);
		else
			memberAdded(diff[i], false);
	}
	fireInterceptorEvent(new CoordinationEvent(CoordinationEvent.EVT_POST_MERGE, this, "Post merge"));
	return merged;
}
 

import org.apache.catalina.tribes.membership.MemberImpl; //导入依赖的package包/类
protected void handleMyToken(MemberImpl local, CoordinationMessage msg, Member sender, Membership merged)
		throws ChannelException {
	if (local.equals(msg.getLeader())) {
		// no leadership change
		if (Arrays.sameMembers(msg.getMembers(), merged.getMembers())) {
			msg.type = COORD_CONF;
			super.sendMessage(Arrays.remove(msg.getMembers(), local), createData(msg, local), null);
			handleViewConf(msg, local, merged);
		} else {
			// membership change
			suggestedView = new Membership(local, AbsoluteOrder.comp, true);
			suggestedviewId = msg.getId();
			Arrays.fill(suggestedView, merged.getMembers());
			msg.view = merged.getMembers();
			sendElectionMsgToNextInline(local, msg);
		}
	} else {
		// leadership change
		suggestedView = null;
		suggestedviewId = null;
		msg.view = merged.getMembers();
		sendElectionMsgToNextInline(local, msg);
	}
}