Initial commit

RudderApiException.cs

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+using System;
+
+namespace RudderSdk.Core;
+
+/// <summary>
+/// Base exception for every API failure. Carries the HTTP status code
+/// (0 for network failures, see <see cref="RudderNetworkException"/>), the
+/// machine-readable API error code (see <see cref="RudderErrorCodes"/>) and the
+/// server-issued request id when available.
+/// </summary>
+public class RudderApiException : Exception
+{
+    /// <summary>HTTP status code, or 0 when the request never reached the server.</summary>
+    public int StatusCode { get; }
+
+    /// <summary>Machine-readable API error code, or an empty string.</summary>
+    public string Code { get; }
+
+    /// <summary>Server-issued request id for support tickets, or null.</summary>
+    public string? RequestId { get; }
+
+    /// <summary>Creates the exception.</summary>
+    public RudderApiException(int statusCode, string? code, string message, string? requestId = null)
+        : base(message)
+    {
+        StatusCode = statusCode;
+        Code = code ?? string.Empty;
+        RequestId = requestId;
+    }
+
+    /// <summary>Creates the exception wrapping an inner transport error.</summary>
+    public RudderApiException(int statusCode, string? code, string message, string? requestId, Exception? innerException)
+        : base(message, innerException)
+    {
+        StatusCode = statusCode;
+        Code = code ?? string.Empty;
+        RequestId = requestId;
+    }
+}