public void performBasicCheck() throws RemoteException {
try {
//update all alive times
Member[] members = super.getMembers();
for (int i = 0; members != null && i < members.length; i++) {
if (addSuspects.containsKey(members[i]) && membership.getMember(members[i]) == null) {
// avoid temporary adding member.
continue;
}
if (membership.memberAlive( (org.apache.catalina.tribes.membership.MemberImplRemoteInterface) members[i])) {
//we don't have this one in our membership, check to see if he/she is alive
if (memberAlive(members[i])) {
log.warn("Member added, even though we werent notified:" + members[i]);
super.memberAdded(members[i]);
} else {
membership.removeMember( (org.apache.catalina.tribes.membership.MemberImplRemoteInterface) members[i]);
}
}
}
//check suspect members if they are still alive,
//if not, simply issue the memberDisappeared message
org.apache.catalina.tribes.membership.MemberImplRemoteInterface[] keys = removeSuspects.keySet().toArray(new org.apache.catalina.tribes.membership.MemberImplRemoteInterface[removeSuspects.size()]);
for (int i = 0; i < keys.length; i++) {
org.apache.catalina.tribes.membership.MemberImplRemoteInterface m = keys[i];
if (membership.getMember(m) != null && (!memberAlive(m))) {
membership.removeMember(m);
super.memberDisappeared(m);
removeSuspects.remove(m);
if(log.isInfoEnabled())
log.info("Suspect member, confirmed dead.["+m+"]");
} else {
if (removeSuspectsTimeout > 0) {
long timeNow = System.currentTimeMillis();
int timeIdle = (int) ((timeNow - removeSuspects.get(m).longValue()) / 1000L);
if (timeIdle > removeSuspectsTimeout) {
removeSuspects.remove(m); // remove suspect member
}
}
}
}
//check add suspects members if they are alive now,
//if they are, simply issue the memberAdded message
keys = addSuspects.keySet().toArray(new org.apache.catalina.tribes.membership.MemberImplRemoteInterface[addSuspects.size()]);
for (int i = 0; i < keys.length; i++) {
org.apache.catalina.tribes.membership.MemberImplRemoteInterface m = keys[i];
if ( membership.getMember(m) == null && (memberAlive(m))) {
membership.memberAlive(m);
super.memberAdded(m);
addSuspects.remove(m);
if(log.isInfoEnabled())
log.info("Suspect member, confirmed alive.["+m+"]");
}
}
} catch (Exception excp) {
excp.printStackTrace();
}
}
@Override
public void memberDisappeared(Member member) throws RemoteException {
try {
if ( membership == null ) setupMembership();
boolean notify = false;
boolean shutdown = Arrays.equals(member.getCommand(),Member.SHUTDOWN_PAYLOAD);
if ( !shutdown )
if(log.isInfoEnabled())
log.info("Received memberDisappeared["+member+"] message. Will verify.");
synchronized (membership) {
if (!membership.contains(member)) {
if(log.isInfoEnabled())
log.info("Verification complete. Member already disappeared["+member+"]");
return;
}
//check to see if the member really is gone
//if the payload is not a shutdown message
if (shutdown || !memberAlive(member)) {
//not correct, we need to maintain the map
membership.removeMember( (org.apache.catalina.tribes.membership.MemberImplRemoteInterface) member);
removeSuspects.remove(member);
if (member instanceof org.apache.catalina.tribes.membership.StaticMemberRemoteInterface) {
addSuspects.put(member, Long.valueOf(System.currentTimeMillis()));
}
notify = true;
} else {
//add the member as suspect
removeSuspects.put(member, Long.valueOf(System.currentTimeMillis()));
}
}
if ( notify ) {
if(log.isInfoEnabled())
log.info("Verification complete. Member disappeared["+member+"]");
super.memberDisappeared(member);
} else {
if(log.isInfoEnabled())
log.info("Verification complete. Member still alive["+member+"]");
}
} catch (Exception excp) {
excp.printStackTrace();
}
}
public void performForcedCheck() throws RemoteException {
try {
//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((org.apache.catalina.tribes.membership.MemberImplRemoteInterface)members[i])) super.memberAdded(members[i]);
addSuspects.remove(members[i]);
} else {
if (membership.getMember(members[i])!=null) {
membership.removeMember((org.apache.catalina.tribes.membership.MemberImplRemoteInterface)members[i]);
removeSuspects.remove(members[i]);
if (members[i] instanceof org.apache.catalina.tribes.membership.StaticMemberRemoteInterface) {
addSuspects.put(members[i], Long.valueOf(System.currentTimeMillis()));
}
super.memberDisappeared(members[i]);
}
}
}
} catch (Exception excp) {
excp.printStackTrace();
}
}
