public bool ContainsNode(RedisManagedNode node)
{
if (node != null)
{
lock (m_SyncRoot)
{
var nodes = m_Nodes;
var length = (nodes != null) ? nodes.Length : 0;
if (length == 0)
{
return(false);
}
return(nodes.Contains(node));
}
}
return(false);
}
public virtual bool RemoveNode(RedisManagedNode node)
{
if (node != null)
{
lock (m_SyncRoot)
{
var nodes = m_Nodes;
if (nodes != null)
{
var length = nodes.Length;
if (length > 0 && nodes.Contains(node))
{
if (length == 1)
{
Interlocked.Exchange(ref m_NodeIndex, -1);
Interlocked.Exchange(ref m_Nodes, new RedisManagedNode[0]);
return(true);
}
var newNodes = new RedisManagedNode[length - 1];
var index = 0;
for (var i = 0; i < length; i++)
{
var groupNode = nodes[i];
if (groupNode == node)
{
continue;
}
newNodes[index++] = groupNode;
}
Interlocked.Exchange(ref m_Nodes, newNodes);
return(true);
}
}
}
}
return(false);
}
public virtual bool AppendNode(RedisManagedNode node)
{
if (node != null)
{
lock (m_SyncRoot)
{
var nodes = m_Nodes;
var length = (nodes != null) ? nodes.Length : 0;
if (length == 0)
{
node.Role = Role;
Interlocked.Exchange(ref m_Nodes, new[] { node });
Interlocked.Exchange(ref m_NodeIndex, 0);
return(true);
}
if (!nodes.Contains(node))
{
var isDown = node.IsClosed;
var newNodes = new RedisManagedNode[length + 1];
var index = isDown ? 0 : 1;
newNodes[!isDown ? 0 : length] = node;
for (var i = 0; i < length; i++)
{
newNodes[index++] = nodes[i];
}
node.Role = Role;
Interlocked.Exchange(ref m_Nodes, newNodes);
return(true);
}
}
}
return(false);
}
public bool ChangeGroup(RedisManagedNode node)
{
if (!Disposed && node.IsAlive())
{
lock (m_SyncRoot)
{
var slaves = m_Slaves;
var masters = m_Masters;
if (slaves.IsAlive() && masters.IsAlive())
{
if (masters.ContainsNode(node))
{
node.Role = RedisRole.Slave;
if (!masters.RemoveNode(node))
{
node.IsClosed = true;
}
else
{
if (slaves.AppendNode(node))
{
return(true);
}
node.Dispose();
}
}
else if (slaves.ContainsNode(node))
{
node.Role = RedisRole.Slave;
if (!slaves.RemoveNode(node))
{
node.IsClosed = true;
}
else
{
var oldMasters = masters.Nodes;
if (!masters.AppendNode(node))
{
node.Dispose();
}
else
{
try
{
node.Role = RedisRole.Master;
if (!oldMasters.IsEmpty())
{
var length = oldMasters.Length;
var nodes = new RedisManagedNode[length];
Array.Copy(oldMasters, nodes, length);
foreach (var oldNode in nodes)
{
if (!(ReferenceEquals(oldNode, null) ||
ReferenceEquals(oldNode, node)))
{
oldNode.IsClosed = true;
oldNode.Role = RedisRole.Slave;
if (masters.RemoveNode(oldNode) && oldNode.IsAlive())
{
slaves.AppendNode(node);
}
}
}
}
}
catch (Exception)
{ }
return(true);
}
}
}
}
}
}
return(false);
}