Added GraphQL to GitHub.Api.

And associated factory/keychain classes.

Author: grokys

src/GitHub.Api/GitHub.Api.csproj

@@ -46,6 +46,18 @@
   </PropertyGroup>
   <Import Project="$(SolutionDir)\src\common\signing.props" />
   <ItemGroup>
+    <Reference Include="Newtonsoft.Json, Version=10.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\Newtonsoft.Json.10.0.3\lib\net45\Newtonsoft.Json.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
+    <Reference Include="Octokit.GraphQL, Version=0.0.1.0, Culture=neutral, PublicKeyToken=0be8860aee462442, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\Octokit.GraphQL.0.0.1\lib\netstandard1.1\Octokit.GraphQL.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
+    <Reference Include="Octokit.GraphQL.Core, Version=0.0.1.0, Culture=neutral, PublicKeyToken=0be8860aee462442, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\Octokit.GraphQL.0.0.1\lib\netstandard1.1\Octokit.GraphQL.Core.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
     <Reference Include="Serilog, Version=2.0.0.0, Culture=neutral, PublicKeyToken=24c2f752a8e58a10, processorArchitecture=MSIL">
       <HintPath>..\..\packages\Serilog.2.5.0\lib\net46\Serilog.dll</HintPath>
       <Private>True</Private>
@@ -66,6 +78,9 @@
       <Link>ApiClientConfiguration_User.cs</Link>
     </Compile>
     <Compile Include="ApiClientConfiguration_User.cs" Condition="$(Buildtype) != 'Internal'" />
+    <Compile Include="GraphQLKeychainCredentialStore.cs" />
+    <Compile Include="IGraphQLClientFactory.cs" />
+    <Compile Include="GraphQLClientFactory.cs" />
     <Compile Include="IKeychain.cs" />
     <Compile Include="ILoginManager.cs" />
     <Compile Include="IOAuthCallbackListener.cs" />

src/GitHub.Api/GraphQLClientFactory.cs

@@ -0,0 +1,41 @@
+using System;
+using System.ComponentModel.Composition;
+using System.Threading.Tasks;
+using GitHub.Models;
+using GitHub.Primitives;
+using Octokit.GraphQL;
+
+namespace GitHub.Api
+{
+    /// <summary>
+    /// Creates GraphQL <see cref="Octokit.GraphQL.IConnection"/>s for querying the
+    /// GitHub GraphQL API.
+    /// </summary>
+    [Export(typeof(IGraphQLClientFactory))]
+    [PartCreationPolicy(CreationPolicy.Shared)]
+    public class GraphQLClientFactory : IGraphQLClientFactory
+    {
+        readonly IKeychain keychain;
+        readonly IProgram program;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="GraphQLClientFactory"/> class.
+        /// </summary>
+        /// <param name="keychain">The <see cref="IKeychain"/> to use.</param>
+        /// <param name="program">The program details.</param>
+        [ImportingConstructor]
+        public GraphQLClientFactory(IKeychain keychain, IProgram program)
+        {
+            this.keychain = keychain;
+            this.program = program;
+        }
+
+        /// <inheirtdoc/>
+        public Task<Octokit.GraphQL.IConnection> CreateConnection(HostAddress address)
+        {
+            var credentials = new GraphQLKeychainCredentialStore(keychain, address);
+            var header = new ProductHeaderValue(program.ProductHeader.Name, program.ProductHeader.Version);
+            return Task.FromResult<Octokit.GraphQL.IConnection>(new Connection(header, credentials));
+        }
+    }
+}

src/GitHub.Api/GraphQLKeychainCredentialStore.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Threading.Tasks;
+using GitHub.Extensions;
+using GitHub.Primitives;
+using Octokit.GraphQL;
+
+namespace GitHub.Api
+{
+    /// <summary>
+    /// An Octokit.GraphQL credential store that reads from an <see cref="IKeychain"/>.
+    /// </summary>
+    public class GraphQLKeychainCredentialStore : ICredentialStore
+    {
+        readonly IKeychain keychain;
+        readonly HostAddress address;
+
+        public GraphQLKeychainCredentialStore(IKeychain keychain, HostAddress address)
+        {
+            Guard.ArgumentNotNull(keychain, nameof(keychain));
+            Guard.ArgumentNotNull(address, nameof(keychain));
+
+            this.keychain = keychain;
+            this.address = address;
+        }
+
+        public async Task<string> GetCredentials()
+        {
+            var userPass = await keychain.Load(address).ConfigureAwait(false);
+            return userPass?.Item2;
+        }
+    }
+}

src/GitHub.Api/IGraphQLClientFactory.cs

@@ -0,0 +1,19 @@
+using System.Threading.Tasks;
+using GitHub.Primitives;
+
+namespace GitHub.Api
+{
+    /// <summary>
+    /// Creates GraphQL <see cref="Octokit.GraphQL.IConnection"/>s for querying the
+    /// GitHub GraphQL API.
+    /// </summary>
+    public interface IGraphQLClientFactory
+    {
+        /// <summary>
+        /// Creates a new <see cref="Octokit.GraphQL.IConnection"/>.
+        /// </summary>
+        /// <param name="address">The address of the server.</param>
+        /// <returns>A task returning the created connection.</returns>
+        Task<Octokit.GraphQL.IConnection> CreateConnection(HostAddress address);
+    }
+}

src/GitHub.Api/packages.config

@@ -1,4 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
+  <package id="Newtonsoft.Json" version="10.0.3" targetFramework="net461" />
+  <package id="Octokit.GraphQL" version="0.0.1" targetFramework="net461" />
   <package id="Serilog" version="2.5.0" targetFramework="net461" />
 </packages>