Checkpoint, kind of working clustering

1 files changed, 110 insertions, 0 deletions

diff --git a/lib/VNLib.Data.Caching.Extensions/src/Clustering/CacheNodeConfiguration.cs b/lib/VNLib.Data.Caching.Extensions/src/Clustering/CacheNodeConfiguration.cs
new file mode 100644
index 0000000..6b7ab48
--- /dev/null
+++ b/lib/VNLib.Data.Caching.Extensions/src/Clustering/CacheNodeConfiguration.cs
@@ -0,0 +1,110 @@
+/*
+* Copyright (c) 2023 Vaughn Nugent
+* 
+* Library: VNLib
+* Package: VNLib.Data.Caching.Extensions
+* File: CacheNodeConfiguration.cs 
+*
+* CacheNodeConfiguration.cs is part of VNLib.Data.Caching.Extensions which is part of the larger 
+* VNLib collection of libraries and utilities.
+*
+* VNLib.Data.Caching.Extensions is free software: you can redistribute it and/or modify 
+* it under the terms of the GNU Affero General Public License as 
+* published by the Free Software Foundation, either version 3 of the
+* License, or (at your option) any later version.
+*
+* VNLib.Data.Caching.Extensions is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program.  If not, see https://www.gnu.org/licenses/.
+*/
+
+using System;
+
+namespace VNLib.Data.Caching.Extensions.Clustering
+{
+
+    /// <summary>
+    /// A cache configuration for cache servers (nodes)
+    /// </summary>
+    public class CacheNodeConfiguration : CacheClientConfiguration
+    {
+        /// <summary>
+        /// The address for clients to connect to
+        /// </summary>
+        public Uri? ConnectEndpoint { get; private set; }
+
+        /// <summary>
+        /// Whether or not to advertise ourself to peer nodes
+        /// </summary>
+        public bool BroadcastAdverisment { get; private set; }
+
+        /// <summary>
+        /// Define the endpoint for clients to connect to to discover
+        /// other discovertable nodes
+        /// </summary>
+        public Uri? DiscoveryEndpoint { get; private set; }
+
+        /// <summary>
+        /// Gets the configuration for this node as an advertisment
+        /// </summary>
+        public CacheNodeAdvertisment Advertisment
+        {
+            get
+            {
+                return new CacheNodeAdvertisment()
+                {
+                    DiscoveryEndpoint = DiscoveryEndpoint,
+                    ConnectEndpoint = ConnectEndpoint,
+                    NodeId = NodeId
+                };
+            }
+        }
+
+        /// <summary>
+        /// Sets the full address of our cache endpoint for clients to connect to
+        /// </summary>
+        /// <param name="connectUri">The uri clients will attempt to connect to</param>
+        public CacheNodeConfiguration WithCacheEndpoint(Uri connectUri)
+        {
+            ConnectEndpoint = connectUri;
+            return this;
+        }
+
+        /// <summary>
+        /// Enables or disables the advertisement of this node to other nodes
+        /// </summary>
+        /// <param name="discoveryEndpoint">The absolute endpoint clients will use to connect to</param>
+        public CacheNodeConfiguration EnableAdvertisment(Uri? discoveryEndpoint)
+        {
+            BroadcastAdverisment = discoveryEndpoint != null;
+            DiscoveryEndpoint = discoveryEndpoint;
+            return this;
+        }
+
+        ///<inheritdoc/>
+        public string NodeId { get; private set; } = null!;
+
+        /// <summary>
+        /// Specifies the current server's cluster node id. If this 
+        /// is a server connection attempting to listen for changes on the
+        /// remote server, this id must be set and unique
+        /// </summary>
+        /// <param name="nodeId">The cluster node id of the current server</param>
+        /// <returns>Chainable fluent object</returns>
+        /// <exception cref="ArgumentNullException"></exception>
+        public CacheNodeConfiguration WithNodeId(string nodeId)
+        {
+            NodeId = nodeId ?? throw new ArgumentNullException(nameof(nodeId));
+
+            //Update the node id in the node collection
+            (NodeCollection as NodeDiscoveryCollection)!.SetSelfId(nodeId);
+
+            return this;
+        }
+
+    }
+}