internal static void UpdateClusterTopology(ClusterTopologyEvent msg)
{
performUpdate:
if (Monitor.TryEnter(_lock, TimeSpan.FromSeconds(1)))
{
try
{
//get all new members address sets
var newMembersAddress = new HashSet <string>();
foreach (var status in msg.Statuses)
{
newMembersAddress.Add(status.Address);
}
//remove old ones whose address not exist in new address sets
//_members.ToList() duplicates _members, allow _members to be modified in Notify
foreach (var(address, old) in _members.ToList())
{
if (!newMembersAddress.Contains(address))
{
UpdateAndNotify(null, old);
}
}
//find all the entries that exist in the new set
foreach (var @new in msg.Statuses)
{
_members.TryGetValue(@new.Address, out var old);
_members[@new.Address] = @new;
UpdateAndNotify(@new, old);
}
}
finally
{
Monitor.Exit(_lock);
}
}
else
{
_logger.LogDebug("Did not acquire lock within 1 seconds, retry");
goto performUpdate;
}
}
internal static void UpdateClusterTopology(ClusterTopologyEvent msg)
{
bool locked = RwLock.TryEnterWriteLock(1000);
while (!locked)
{
Logger.LogDebug("MemberList did not acquire writer lock within 1 seconds, retry");
locked = RwLock.TryEnterWriteLock(1000);
}
try
{
//get all new members address sets
var newMembersAddress = new HashSet <string>();
foreach (var status in msg.Statuses)
{
newMembersAddress.Add(status.Address);
}
//remove old ones whose address not exist in new address sets
//_members.ToList() duplicates _members, allow _members to be modified in Notify
foreach (var(address, old) in Members.ToList())
{
if (!newMembersAddress.Contains(address))
{
UpdateAndNotify(null, old);
}
}
//find all the entries that exist in the new set
foreach (var @new in msg.Statuses)
{
Members.TryGetValue(@new.Address, out var old);
Members[@new.Address] = @new;
UpdateAndNotify(@new, old);
}
}
finally
{
RwLock.ExitWriteLock();
}
}
