Checkpoint, kind of working clustering

1 files changed, 115 insertions, 0 deletions

diff --git a/lib/VNLib.Data.Caching.Extensions/src/Clustering/CacheClientConfiguration.cs b/lib/VNLib.Data.Caching.Extensions/src/Clustering/CacheClientConfiguration.cs
new file mode 100644
index 0000000..1c1997e
--- /dev/null
+++ b/lib/VNLib.Data.Caching.Extensions/src/Clustering/CacheClientConfiguration.cs
@@ -0,0 +1,115 @@
+/*
+* Copyright (c) 2023 Vaughn Nugent
+* 
+* Library: VNLib
+* Package: VNLib.Data.Caching.Extensions
+* File: CacheClientConfiguration.cs 
+*
+* CacheClientConfiguration.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;
+using System.Linq;
+using System.Collections.Generic;
+
+
+namespace VNLib.Data.Caching.Extensions.Clustering
+{
+
+    /// <summary>
+    /// A fluent api configuration object for configuring a <see cref="FBMClient"/>
+    /// to connect to cache servers.
+    /// </summary>
+    public class CacheClientConfiguration
+    {
+        /// <summary>
+        /// Stores available cache servers to be used for discovery, and connections
+        /// </summary>
+        public INodeDiscoveryCollection NodeCollection { get; } = new NodeDiscoveryCollection();
+
+        /// <summary>
+        /// The authentication manager to use for signing and verifying messages to and from the cache servers
+        /// </summary>
+        public ICacheAuthManager AuthManager { get; private set; }
+
+        /// <summary>
+        /// The error handler to use for handling errors that occur during the discovery process
+        /// </summary>
+        public ICacheDiscoveryErrorHandler? ErrorHandler { get; private set; }
+
+        /// <summary>
+        /// Specifies if all connections should use TLS
+        /// </summary>
+        public bool UseTls { get; private set; }
+
+        internal Uri[]? WellKnownNodes { get; set; }
+
+        /// <summary>
+        /// Specifies the JWT authentication manager to use for signing and verifying JWTs
+        /// </summary>
+        /// <param name="manager">The authentication manager</param>
+        /// <returns>Chainable fluent object</returns>
+        public CacheClientConfiguration WithAuthenticator(ICacheAuthManager manager)
+        {
+            AuthManager = manager;
+            return this;
+        }
+
+        /// <summary>
+        /// Specifies if all connections should be using TLS
+        /// </summary>
+        /// <param name="useTls">A value that indicates if connections should use TLS</param>
+        public CacheClientConfiguration WithTls(bool useTls)
+        {
+            UseTls = useTls;
+            return this;
+        }
+
+        /// <summary>
+        /// Specifies the initial cache peers to connect to
+        /// </summary>
+        /// <param name="peers">The collection of servers to discover peers from and connect to</param>
+        /// <returns>Chainable fluent object</returns>
+        public CacheClientConfiguration WithInitialPeers(IEnumerable<Uri> peers)
+        {
+            //Check null
+            _ = peers ?? throw new ArgumentNullException(nameof(peers));
+
+            //Store peer array
+            WellKnownNodes = peers.ToArray();
+
+            if (WellKnownNodes.Any(p => !p.IsAbsoluteUri))
+            {
+                WellKnownNodes = null;
+                throw new ArgumentException("All discoverable node uris must be in absolute form");
+            }
+
+            return this;
+        }
+
+        /// <summary>
+        /// Specifies the error handler to use for handling errors that occur during the discovery process
+        /// </summary>
+        /// <param name="handler">The error handler to use during a discovery</param>
+        /// <returns>Chainable fluent object</returns>
+        public CacheClientConfiguration WithErrorHandler(ICacheDiscoveryErrorHandler handler)
+        {
+            ErrorHandler = handler;
+            return this;
+        }
+    }
+}