private InternalState InitBasic(ClusterConfig config, ISaslAuthenticationProvider auth)
{
if (log.IsInfoEnabled)
{
log.Info("No vbucket. Server count: " + (config.nodes == null ? 0 : config.nodes.Length));
}
// the cluster can return host names in the server list, so
// we ha ve to make sure they are converted to IP addresses
var nodes = config == null
? Enumerable.Empty <IMemcachedNode>()
: (from node in config.nodes
let ip = new IPEndPoint(GetFirstAddress(node.HostName), node.Port)
where node.Status == "healthy"
select CreateNode(ip, auth, node.ConfigurationData));
return(new InternalState
{
CurrentNodes = nodes.ToArray(),
Locator = configuration.CreateNodeLocator() ?? new KetamaNodeLocator(),
OpFactory = BasicMembaseOperationFactory.Instance
});
}
private void ReconfigurePool(ClusterConfig config)
{
// kill the timer first
this.isTimerActive = false;
if (this.resurrectTimer != null)
{
this.resurrectTimer.Change(Timeout.Infinite, Timeout.Infinite);
}
if (config == null)
{
if (log.IsInfoEnabled)
{
log.Info("Config is empty, all nodes are down.");
}
Interlocked.Exchange(ref this.state, InternalState.Empty);
return;
}
var currentState = this.state;
// these should be disposed after we've been reinitialized
var oldNodes = currentState == null ? null : currentState.CurrentNodes;
// default bucket does not require authentication
// membase 1.6 tells us if a bucket needs authentication,
// so let's try to use the config's password
var password = config.authType == "sasl"
? config.saslPassword
: this.configuration.BucketPassword;
var authenticator = this.configuration.Bucket == null
? null
: new PlainTextAuthenticator(null, this.configuration.Bucket, password);
try
{
var state = (config == null || config.vBucketServerMap == null)
? this.InitBasic(config, authenticator)
: this.InitVBucket(config, authenticator);
var nodes = state.CurrentNodes;
state.Locator.Initialize(nodes);
// we need to subscribe the failed event,
// so we can periodically check the dead
// nodes, since we do not get a config
// update every time a node dies
for (var i = 0; i < nodes.Length; i++)
{
nodes[i].Failed += this.NodeFail;
}
Interlocked.Exchange(ref this.state, state);
}
catch (Exception e)
{
log.Error("Failed to initialize the pool.", e);
Interlocked.Exchange(ref this.state, InternalState.Empty);
}
// kill the old nodes
if (oldNodes != null)
{
for (var i = 0; i < oldNodes.Length; i++)
{
try
{
oldNodes[i].Failed -= this.NodeFail;
oldNodes[i].Dispose();
}
catch { }
}
}
}
