Adding service operations for external languages (#918)

* Added service operations for external languages

src/Microsoft.SqlTools.ServiceLayer/LanguageExtensibility/Contracts/ExternalLanguageDeleteRequest.cs

@@ -0,0 +1,39 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
+using Microsoft.SqlTools.Hosting.Protocol.Contracts;
+
+namespace Microsoft.SqlTools.ServiceLayer.LanguageExtensibility.Contracts
+{
+    public class ExternalLanguageDeleteRequestParams
+    {
+        /// <summary>
+        /// Connection uri
+        /// </summary>
+        public string OwnerUri { get; set; }
+
+        /// <summary>
+        /// Language name
+        /// </summary>
+        public string LanguageName { get; set; }
+    }
+
+    /// <summary>
+    /// Response class for external language status
+    /// </summary>
+    public class ExternalLanguageDeleteResponseParams
+    {
+    }
+
+    /// <summary>
+    /// Request class for external language status
+    /// </summary>
+    public class ExternalLanguageDeleteRequest
+    {
+        public static readonly
+            RequestType<ExternalLanguageDeleteRequestParams, ExternalLanguageDeleteResponseParams> Type =
+                RequestType<ExternalLanguageDeleteRequestParams, ExternalLanguageDeleteResponseParams>.Create("languageExtension/delete");
+    }
+}

src/Microsoft.SqlTools.ServiceLayer/LanguageExtensibility/Contracts/ExternalLanguageListRequest.cs

@@ -0,0 +1,39 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
+using Microsoft.SqlTools.Hosting.Protocol.Contracts;
+using System.Collections.Generic;
+
+namespace Microsoft.SqlTools.ServiceLayer.LanguageExtensibility.Contracts
+{
+    public class ExternalLanguageListRequestParams
+    {
+        /// <summary>
+        /// Connection uri
+        /// </summary>
+        public string OwnerUri { get; set; }
+    }
+
+    /// <summary>
+    /// Response class for external language list
+    /// </summary>
+    public class ExternalLanguageListResponseParams
+    {
+        /// <summary>
+        /// Language status
+        /// </summary>
+        public List<ExternalLanguage> Languages { get; set; }
+    }
+
+    /// <summary>
+    /// Request class for external language list
+    /// </summary>
+    public class ExternalLanguageListRequest
+    {
+        public static readonly
+            RequestType<ExternalLanguageListRequestParams, ExternalLanguageListResponseParams> Type =
+                RequestType<ExternalLanguageListRequestParams, ExternalLanguageListResponseParams>.Create("languageExtension/list");
+    }
+}

src/Microsoft.SqlTools.ServiceLayer/LanguageExtensibility/Contracts/ExternalLanguageModel.cs

@@ -0,0 +1,83 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+
+namespace Microsoft.SqlTools.ServiceLayer.LanguageExtensibility.Contracts
+{
+
+    public enum ExternalLanguagePlatform
+    {
+        None,
+        Windows,
+        Linux
+    }
+
+    /// <summary>
+    /// Language metadata
+    /// </summary>
+    public class ExternalLanguage
+    {
+
+        /// <summary>
+        /// Language Name
+        /// </summary>
+        public string Name { get; set; }
+
+        /// <summary>
+        /// Language Owner
+        /// </summary>
+        public string Owner { get; set; }
+
+        public List<ExternalLanguageContent> Contents { get; set; }
+
+        /// <summary>
+        /// Created Date
+        /// </summary>
+        public string CreatedDate { get; set; }
+
+    }
+
+    public class ExternalLanguageContent
+    {
+        public bool IsLocalFile { get; set; }
+
+        /// <summary>
+        /// Path to extension file
+        /// </summary>
+        public string PathToExtension { get; set; }
+
+        /// <summary>
+        /// Extension file name
+        /// </summary>
+        public string ExtensionFileName { get; set; }
+
+        /// <summary>
+        /// Platform name
+        /// </summary>
+        public ExternalLanguagePlatform PlatformId
+        {
+            get
+            {
+                return string.IsNullOrWhiteSpace(Platform) ? ExternalLanguagePlatform.None : (ExternalLanguagePlatform)Enum.Parse(typeof(ExternalLanguagePlatform), Platform, true);
+            }
+        }
+
+        public string Platform { get; set; }
+
+        /// <summary>
+        /// Extension parameters
+        /// </summary>
+        public string Parameters { get; set; }
+
+        /// <summary>
+        /// Environment variables
+        /// </summary>
+        public string EnvironmentVariables { get; set; }
+
+    }
+}

src/Microsoft.SqlTools.ServiceLayer/LanguageExtensibility/Contracts/ExternalLanguageStatusRequest.cs

@@ -0,0 +1,43 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
+using Microsoft.SqlTools.Hosting.Protocol.Contracts;
+
+namespace Microsoft.SqlTools.ServiceLayer.LanguageExtensibility.Contracts
+{
+    public class ExternalLanguageStatusRequestParams
+    {
+        /// <summary>
+        /// Connection uri
+        /// </summary>
+        public string OwnerUri { get; set; }
+
+        /// <summary>
+        /// Language name
+        /// </summary>
+        public string LanguageName { get; set; }
+    }
+
+    /// <summary>
+    /// Response class for external language status
+    /// </summary>
+    public class ExternalLanguageStatusResponseParams
+    {
+        /// <summary>
+        /// Language status
+        /// </summary>
+        public bool Status { get; set; }
+    }
+
+    /// <summary>
+    /// Request class for external language status
+    /// </summary>
+    public class ExternalLanguageStatusRequest
+    {
+        public static readonly
+            RequestType<ExternalLanguageStatusRequestParams, ExternalLanguageStatusResponseParams> Type =
+                RequestType<ExternalLanguageStatusRequestParams, ExternalLanguageStatusResponseParams>.Create("languageExtension/status");
+    }
+}

src/Microsoft.SqlTools.ServiceLayer/LanguageExtensibility/Contracts/ExternalLanguageUpdateRequest.cs

@@ -0,0 +1,39 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
+using Microsoft.SqlTools.Hosting.Protocol.Contracts;
+
+namespace Microsoft.SqlTools.ServiceLayer.LanguageExtensibility.Contracts
+{
+    public class ExternalLanguageUpdateRequestParams
+    {
+        /// <summary>
+        /// Connection uri
+        /// </summary>
+        public string OwnerUri { get; set; }
+
+        /// <summary>
+        /// Language name
+        /// </summary>
+        public ExternalLanguage Language { get; set; }
+    }
+
+    /// <summary>
+    /// Response class for external language update
+    /// </summary>
+    public class ExternalLanguageUpdateResponseParams
+    {
+    }
+
+    /// <summary>
+    /// Request class for external language status
+    /// </summary>
+    public class ExternalLanguageUpdateRequest
+    {
+        public static readonly
+            RequestType<ExternalLanguageUpdateRequestParams, ExternalLanguageUpdateResponseParams> Type =
+                RequestType<ExternalLanguageUpdateRequestParams, ExternalLanguageUpdateResponseParams>.Create("languageExtension/update");
+    }
+}