Feature/ratelimit refactor (#197)

CryptoExchange.Net/Objects/RequestDefinitionCache.cs

@@ -0,0 +1,83 @@
+using CryptoExchange.Net.RateLimiting.Interfaces;
+using System;
+using System.Collections.Generic;
+using System.Net.Http;
+
+namespace CryptoExchange.Net.Objects
+{
+    /// <summary>
+    /// Request definitions cache
+    /// </summary>
+    public class RequestDefinitionCache
+    {
+        private readonly Dictionary<string, RequestDefinition> _definitions = new();
+
+        /// <summary>
+        /// Get a definition if it is already in the cache or create a new definition and add it to the cache
+        /// </summary>
+        /// <param name="method">The HttpMethod</param>
+        /// <param name="path">Endpoint path</param>
+        /// <param name="authenticated">Endpoint is authenticated</param>
+        /// <returns></returns>
+        public RequestDefinition GetOrCreate(HttpMethod method, string path, bool authenticated = false)
+            => GetOrCreate(method, path, null, 0, authenticated, null, null, null, null, null);
+
+        /// <summary>
+        /// Get a definition if it is already in the cache or create a new definition and add it to the cache
+        /// </summary>
+        /// <param name="method">The HttpMethod</param>
+        /// <param name="path">Endpoint path</param>
+        /// <param name="rateLimitGate">The rate limit gate</param>
+        /// <param name="weight">Request weight</param>
+        /// <param name="authenticated">Endpoint is authenticated</param>
+        /// <returns></returns>
+        public RequestDefinition GetOrCreate(HttpMethod method, string path, IRateLimitGate rateLimitGate, int weight = 1, bool authenticated = false)
+            => GetOrCreate(method, path, rateLimitGate,  weight, authenticated, null, null, null, null, null);
+
+        /// <summary>
+        /// Get a definition if it is already in the cache or create a new definition and add it to the cache
+        /// </summary>
+        /// <param name="method">The HttpMethod</param>
+        /// <param name="path">Endpoint path</param>
+        /// <param name="rateLimitGate">The rate limit gate</param>
+        /// <param name="endpointLimitCount">The limit count for this specific endpoint</param>
+        /// <param name="endpointLimitPeriod">The period for the limit for this specific endpoint</param>
+        /// <param name="weight">Request weight</param>
+        /// <param name="authenticated">Endpoint is authenticated</param>
+        /// <param name="requestBodyFormat">Request body format</param>
+        /// <param name="parameterPosition">Parameter position</param>
+        /// <param name="arraySerialization">Array serialization type</param>
+        /// <returns></returns>
+        public RequestDefinition GetOrCreate(
+            HttpMethod method,
+            string path,
+            IRateLimitGate? rateLimitGate,
+            int weight,
+            bool authenticated,
+            int? endpointLimitCount = null,
+            TimeSpan? endpointLimitPeriod = null,
+            RequestBodyFormat? requestBodyFormat = null,
+            HttpMethodParameterPosition? parameterPosition = null,
+            ArrayParametersSerialization? arraySerialization = null)
+        {
+
+            if (!_definitions.TryGetValue(method + path, out var def))
+            {
+                def = new RequestDefinition(path, method)
+                {
+                    Authenticated = authenticated,
+                    EndpointLimitCount = endpointLimitCount,
+                    EndpointLimitPeriod = endpointLimitPeriod,
+                    RateLimitGate = rateLimitGate,
+                    Weight = weight,
+                    ArraySerialization = arraySerialization,
+                    RequestBodyFormat = requestBodyFormat,
+                    ParameterPosition = parameterPosition,
+                };
+                _definitions.Add(method + path, def);
+            }
+
+            return def;
+        }
+    }
+}