Fix bug with custom client request id generation (Azure#1104)

* Fix bug with custom client request id generation

  - Fix bug where parameter grouping broke custom client
    request id generation.

* Add tests and regenerated expected

* Fix static analysis errors

  - Fix string.Format missing CultureInfo.CurrentCulture.
  - ProcessClientRequestIdExtension check serviceClient for null.

AutoRest/Generators/CSharp/Azure.CSharp.Tests/AcceptanceTests.cs

@@ -602,6 +602,28 @@ public void CustomNamedRequestIdTest()
             }
         }
 
+        [Fact]
+        public void CustomNamedRequestIdParameterGroupingTest()
+        {
+            SwaggerSpecRunner.RunTests(
+                SwaggerPath("azure-special-properties.json"), ExpectedPath("AzureSpecials"), generator: "Azure.CSharp");
+
+            const string validSubscription = "1234-5678-9012-3456";
+            const string expectedRequestId = "9C4D50EE-2D56-4CD3-8152-34347DC9F2B0";
+
+            using (var client = new AutoRestAzureSpecialParametersTestClient(Fixture.Uri,
+                new TokenCredentials(validSubscription, Guid.NewGuid().ToString())))
+            {
+                var group = new HeaderCustomNamedRequestIdParamGroupingParameters()
+                    {
+                        FooClientRequestId = expectedRequestId
+                    };
+                IAzureOperationResponse response = client.Header.CustomNamedRequestIdParamGroupingWithHttpMessagesAsync(group).Result;
+
+                Assert.Equal("123", response.RequestId);
+            }
+        }
+
         [Fact]
         public void DurationTests()
         {

AutoRest/Generators/CSharp/Azure.CSharp.Tests/Expected/AcceptanceTests/AzureSpecials/HeaderOperations.cs

@@ -216,5 +216,172 @@ internal HeaderOperations(AutoRestAzureSpecialParametersTestClient client)
             return _result;
         }
 
+        /// <summary>
+        /// Send foo-client-request-id = 9C4D50EE-2D56-4CD3-8152-34347DC9F2B0 in the
+        /// header of the request, via a parameter group
+        /// </summary>
+        /// <param name='headerCustomNamedRequestIdParamGroupingParameters'>
+        /// Additional parameters for the operation
+        /// </param>
+        /// <param name='customHeaders'>
+        /// Headers that will be added to request.
+        /// </param>
+        /// <param name='cancellationToken'>
+        /// The cancellation token.
+        /// </param>
+        /// <return>
+        /// A response object containing the response body and response headers.
+        /// </return>
+        public async Task<AzureOperationHeaderResponse<HeaderCustomNamedRequestIdParamGroupingHeaders>> CustomNamedRequestIdParamGroupingWithHttpMessagesAsync(HeaderCustomNamedRequestIdParamGroupingParameters headerCustomNamedRequestIdParamGroupingParameters, Dictionary<string, List<string>> customHeaders = null, CancellationToken cancellationToken = default(CancellationToken))
+        {
+            if (headerCustomNamedRequestIdParamGroupingParameters == null)
+            {
+                throw new ValidationException(ValidationRules.CannotBeNull, "headerCustomNamedRequestIdParamGroupingParameters");
+            }
+            if (headerCustomNamedRequestIdParamGroupingParameters != null)
+            {
+                headerCustomNamedRequestIdParamGroupingParameters.Validate();
+            }
+            string fooClientRequestId = default(string);
+            if (headerCustomNamedRequestIdParamGroupingParameters != null)
+            {
+                fooClientRequestId = headerCustomNamedRequestIdParamGroupingParameters.FooClientRequestId;
+            }
+            // Tracing
+            bool _shouldTrace = ServiceClientTracing.IsEnabled;
+            string _invocationId = null;
+            if (_shouldTrace)
+            {
+                _invocationId = ServiceClientTracing.NextInvocationId.ToString();
+                Dictionary<string, object> tracingParameters = new Dictionary<string, object>();
+                tracingParameters.Add("fooClientRequestId", fooClientRequestId);
+                tracingParameters.Add("cancellationToken", cancellationToken);
+                ServiceClientTracing.Enter(_invocationId, this, "CustomNamedRequestIdParamGrouping", tracingParameters);
+            }
+            // Construct URL
+            var _baseUrl = this.Client.BaseUri.AbsoluteUri;
+            var _url = new Uri(new Uri(_baseUrl + (_baseUrl.EndsWith("/") ? "" : "/")), "azurespecials/customNamedRequestIdParamGrouping").ToString();
+            List<string> _queryParameters = new List<string>();
+            if (_queryParameters.Count > 0)
+            {
+                _url += "?" + string.Join("&", _queryParameters);
+            }
+            // Create HTTP transport objects
+            HttpRequestMessage _httpRequest = new HttpRequestMessage();
+            HttpResponseMessage _httpResponse = null;
+            _httpRequest.Method = new HttpMethod("POST");
+            _httpRequest.RequestUri = new Uri(_url);
+            // Set Headers
+            if (this.Client.GenerateClientRequestId != null && this.Client.GenerateClientRequestId.Value)
+            {
+                _httpRequest.Headers.TryAddWithoutValidation("foo-client-request-id", Guid.NewGuid().ToString());
+            }
+            if (this.Client.AcceptLanguage != null)
+            {
+                if (_httpRequest.Headers.Contains("accept-language"))
+                {
+                    _httpRequest.Headers.Remove("accept-language");
+                }
+                _httpRequest.Headers.TryAddWithoutValidation("accept-language", this.Client.AcceptLanguage);
+            }
+            if (fooClientRequestId != null)
+            {
+                if (_httpRequest.Headers.Contains("foo-client-request-id"))
+                {
+                    _httpRequest.Headers.Remove("foo-client-request-id");
+                }
+                _httpRequest.Headers.TryAddWithoutValidation("foo-client-request-id", fooClientRequestId);
+            }
+            if (customHeaders != null)
+            {
+                foreach(var _header in customHeaders)
+                {
+                    if (_httpRequest.Headers.Contains(_header.Key))
+                    {
+                        _httpRequest.Headers.Remove(_header.Key);
+                    }
+                    _httpRequest.Headers.TryAddWithoutValidation(_header.Key, _header.Value);
+                }
+            }
+
+            // Serialize Request
+            string _requestContent = null;
+            // Set Credentials
+            if (this.Client.Credentials != null)
+            {
+                cancellationToken.ThrowIfCancellationRequested();
+                await this.Client.Credentials.ProcessHttpRequestAsync(_httpRequest, cancellationToken).ConfigureAwait(false);
+            }
+            // Send Request
+            if (_shouldTrace)
+            {
+                ServiceClientTracing.SendRequest(_invocationId, _httpRequest);
+            }
+            cancellationToken.ThrowIfCancellationRequested();
+            _httpResponse = await this.Client.HttpClient.SendAsync(_httpRequest, cancellationToken).ConfigureAwait(false);
+            if (_shouldTrace)
+            {
+                ServiceClientTracing.ReceiveResponse(_invocationId, _httpResponse);
+            }
+            HttpStatusCode _statusCode = _httpResponse.StatusCode;
+            cancellationToken.ThrowIfCancellationRequested();
+            string _responseContent = null;
+            if ((int)_statusCode != 200)
+            {
+                var ex = new ErrorException(string.Format("Operation returned an invalid status code '{0}'", _statusCode));
+                try
+                {
+                    _responseContent = await _httpResponse.Content.ReadAsStringAsync().ConfigureAwait(false);
+                    Error _errorBody = SafeJsonConvert.DeserializeObject<Error>(_responseContent, this.Client.DeserializationSettings);
+                    if (_errorBody != null)
+                    {
+                        ex.Body = _errorBody;
+                    }
+                }
+                catch (JsonException)
+                {
+                    // Ignore the exception
+                }
+                ex.Request = new HttpRequestMessageWrapper(_httpRequest, _requestContent);
+                ex.Response = new HttpResponseMessageWrapper(_httpResponse, _responseContent);
+                if (_shouldTrace)
+                {
+                    ServiceClientTracing.Error(_invocationId, ex);
+                }
+                _httpRequest.Dispose();
+                if (_httpResponse != null)
+                {
+                    _httpResponse.Dispose();
+                }
+                throw ex;
+            }
+            // Create Result
+            var _result = new AzureOperationHeaderResponse<HeaderCustomNamedRequestIdParamGroupingHeaders>();
+            _result.Request = _httpRequest;
+            _result.Response = _httpResponse;
+            if (_httpResponse.Headers.Contains("foo-request-id"))
+            {
+                _result.RequestId = _httpResponse.Headers.GetValues("foo-request-id").FirstOrDefault();
+            }
+            try
+            {
+                _result.Headers = _httpResponse.GetHeadersAsJson().ToObject<HeaderCustomNamedRequestIdParamGroupingHeaders>(JsonSerializer.Create(this.Client.DeserializationSettings));
+            }
+            catch (JsonException ex)
+            {
+                _httpRequest.Dispose();
+                if (_httpResponse != null)
+                {
+                    _httpResponse.Dispose();
+                }
+                throw new SerializationException("Unable to deserialize the headers.", _httpResponse.GetHeadersAsJson().ToString(), ex);
+            }
+            if (_shouldTrace)
+            {
+                ServiceClientTracing.Exit(_invocationId, _result);
+            }
+            return _result;
+        }
+
     }
 }

AutoRest/Generators/CSharp/Azure.CSharp.Tests/Expected/AcceptanceTests/AzureSpecials/HeaderOperationsExtensions.cs

@@ -58,5 +58,41 @@ public static HeaderCustomNamedRequestIdHeaders CustomNamedRequestId(this IHeade
                 }
             }
 
+            /// <summary>
+            /// Send foo-client-request-id = 9C4D50EE-2D56-4CD3-8152-34347DC9F2B0 in the
+            /// header of the request, via a parameter group
+            /// </summary>
+            /// <param name='operations'>
+            /// The operations group for this extension method.
+            /// </param>
+            /// <param name='headerCustomNamedRequestIdParamGroupingParameters'>
+            /// Additional parameters for the operation
+            /// </param>
+            public static HeaderCustomNamedRequestIdParamGroupingHeaders CustomNamedRequestIdParamGrouping(this IHeaderOperations operations, HeaderCustomNamedRequestIdParamGroupingParameters headerCustomNamedRequestIdParamGroupingParameters)
+            {
+                return Task.Factory.StartNew(s => ((IHeaderOperations)s).CustomNamedRequestIdParamGroupingAsync(headerCustomNamedRequestIdParamGroupingParameters), operations, CancellationToken.None, TaskCreationOptions.None, TaskScheduler.Default).Unwrap().GetAwaiter().GetResult();
+            }
+
+            /// <summary>
+            /// Send foo-client-request-id = 9C4D50EE-2D56-4CD3-8152-34347DC9F2B0 in the
+            /// header of the request, via a parameter group
+            /// </summary>
+            /// <param name='operations'>
+            /// The operations group for this extension method.
+            /// </param>
+            /// <param name='headerCustomNamedRequestIdParamGroupingParameters'>
+            /// Additional parameters for the operation
+            /// </param>
+            /// <param name='cancellationToken'>
+            /// The cancellation token.
+            /// </param>
+            public static async Task<HeaderCustomNamedRequestIdParamGroupingHeaders> CustomNamedRequestIdParamGroupingAsync(this IHeaderOperations operations, HeaderCustomNamedRequestIdParamGroupingParameters headerCustomNamedRequestIdParamGroupingParameters, CancellationToken cancellationToken = default(CancellationToken))
+            {
+                using (var _result = await operations.CustomNamedRequestIdParamGroupingWithHttpMessagesAsync(headerCustomNamedRequestIdParamGroupingParameters, null, cancellationToken).ConfigureAwait(false))
+                {
+                    return _result.Headers;
+                }
+            }
+
     }
 }

AutoRest/Generators/CSharp/Azure.CSharp.Tests/Expected/AcceptanceTests/AzureSpecials/IHeaderOperations.cs

@@ -42,5 +42,19 @@ public partial interface IHeaderOperations
         /// Thrown when a required parameter is null
         /// </exception>
         Task<AzureOperationHeaderResponse<HeaderCustomNamedRequestIdHeaders>> CustomNamedRequestIdWithHttpMessagesAsync(string fooClientRequestId, Dictionary<string, List<string>> customHeaders = null, CancellationToken cancellationToken = default(CancellationToken));
+        /// <summary>
+        /// Send foo-client-request-id = 9C4D50EE-2D56-4CD3-8152-34347DC9F2B0
+        /// in the header of the request, via a parameter group
+        /// </summary>
+        /// <param name='headerCustomNamedRequestIdParamGroupingParameters'>
+        /// Additional parameters for the operation
+        /// </param>
+        /// <param name='customHeaders'>
+        /// The headers that will be added to request.
+        /// </param>
+        /// <param name='cancellationToken'>
+        /// The cancellation token.
+        /// </param>
+        Task<AzureOperationHeaderResponse<HeaderCustomNamedRequestIdParamGroupingHeaders>> CustomNamedRequestIdParamGroupingWithHttpMessagesAsync(HeaderCustomNamedRequestIdParamGroupingParameters headerCustomNamedRequestIdParamGroupingParameters, Dictionary<string, List<string>> customHeaders = null, CancellationToken cancellationToken = default(CancellationToken));
     }
 }

AutoRest/Generators/CSharp/Azure.CSharp.Tests/Expected/AcceptanceTests/AzureSpecials/Models/HeaderCustomNamedRequestIdParamGroupingHeaders.cs

@@ -0,0 +1,46 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for
+// license information.
+// 
+// Code generated by Microsoft (R) AutoRest Code Generator.
+// Changes may cause incorrect behavior and will be lost if the code is
+// regenerated.
+
+namespace Fixtures.Azure.AcceptanceTestsAzureSpecials.Models
+{
+    using System;
+    using System.Linq;
+    using System.Collections.Generic;
+    using Newtonsoft.Json;
+    using Microsoft.Rest;
+    using Microsoft.Rest.Serialization;
+    using Microsoft.Rest.Azure;
+
+    /// <summary>
+    /// Defines headers for customNamedRequestIdParamGrouping operation.
+    /// </summary>
+    public partial class HeaderCustomNamedRequestIdParamGroupingHeaders
+    {
+        /// <summary>
+        /// Initializes a new instance of the
+        /// HeaderCustomNamedRequestIdParamGroupingHeaders class.
+        /// </summary>
+        public HeaderCustomNamedRequestIdParamGroupingHeaders() { }
+
+        /// <summary>
+        /// Initializes a new instance of the
+        /// HeaderCustomNamedRequestIdParamGroupingHeaders class.
+        /// </summary>
+        public HeaderCustomNamedRequestIdParamGroupingHeaders(string fooRequestId = default(string))
+        {
+            FooRequestId = fooRequestId;
+        }
+
+        /// <summary>
+        /// Gets or sets gets the foo-request-id.
+        /// </summary>
+        [JsonProperty(PropertyName = "foo-request-id")]
+        public string FooRequestId { get; set; }
+
+    }
+}

AutoRest/Generators/CSharp/Azure.CSharp.Tests/Expected/AcceptanceTests/AzureSpecials/Models/HeaderCustomNamedRequestIdParamGroupingParameters.cs

@@ -0,0 +1,57 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for
+// license information.
+// 
+// Code generated by Microsoft (R) AutoRest Code Generator.
+// Changes may cause incorrect behavior and will be lost if the code is
+// regenerated.
+
+namespace Fixtures.Azure.AcceptanceTestsAzureSpecials.Models
+{
+    using System;
+    using System.Linq;
+    using System.Collections.Generic;
+    using Newtonsoft.Json;
+    using Microsoft.Rest;
+    using Microsoft.Rest.Serialization;
+    using Microsoft.Rest.Azure;
+
+    /// <summary>
+    /// Additional parameters for the header_customNamedRequestIdParamGrouping
+    /// operation.
+    /// </summary>
+    public partial class HeaderCustomNamedRequestIdParamGroupingParameters
+    {
+        /// <summary>
+        /// Initializes a new instance of the
+        /// HeaderCustomNamedRequestIdParamGroupingParameters class.
+        /// </summary>
+        public HeaderCustomNamedRequestIdParamGroupingParameters() { }
+
+        /// <summary>
+        /// Initializes a new instance of the
+        /// HeaderCustomNamedRequestIdParamGroupingParameters class.
+        /// </summary>
+        public HeaderCustomNamedRequestIdParamGroupingParameters(string fooClientRequestId)
+        {
+            FooClientRequestId = fooClientRequestId;
+        }
+
+        /// <summary>
+        /// Gets or sets the fooRequestId
+        /// </summary>
+        [JsonProperty(PropertyName = "")]
+        public string FooClientRequestId { get; set; }
+
+        /// <summary>
+        /// Validate the object. Throws ValidationException if validation fails.
+        /// </summary>
+        public virtual void Validate()
+        {
+            if (FooClientRequestId == null)
+            {
+                throw new ValidationException(ValidationRules.CannotBeNull, "FooClientRequestId");
+            }
+        }
+    }
+}