Implement Dynamic DataSource registration

Signed-off-by: Bill DeRusha <444835+bderusha@users.noreply.github.com>

.vscode/launch.json

@@ -37,7 +37,8 @@
         "uriFormat": "%s/swagger"
       },
       "env": {
-        "ASPNETCORE_ENVIRONMENT": "Development"
+        "ASPNETCORE_ENVIRONMENT": "Development",
+        "DOTNET_HOSTBUILDER__RELOADCONFIGONCHANGE": "false"
       },
       "sourceFileMap": {
         "/Views": "${workspaceFolder}/Views"

src/CarbonAware.CLI/test/integrationTests/CarbonAware.CLI.IntegrationTests.csproj

@@ -15,8 +15,6 @@
   <ItemGroup>
     <ProjectReference
       Include="..\..\..\CarbonAware.DataSources\CarbonAware.DataSources.Json\mock\CarbonAware.DataSources.Json.Mocks.csproj" />
-    <ProjectReference
-      Include="..\..\..\CarbonAware.DataSources\CarbonAware.DataSources.Registration\CarbonAware.DataSources.Registration.csproj" />
     <ProjectReference
       Include="..\..\..\CarbonAware.DataSources\CarbonAware.DataSources.WattTime\mock\CarbonAware.DataSources.WattTime.Mocks.csproj" />
     <ProjectReference

src/CarbonAware.CLI/test/integrationTests/Commands/Emissions/EmissionsCommandTests.cs

@@ -1,4 +1,3 @@
-using CarbonAware.DataSources.Configuration;
 using NUnit.Framework;
 using System.Text.Json.Nodes;
 using System.Text.RegularExpressions;

src/CarbonAware.CLI/test/integrationTests/Commands/EmissionsForecasts/EmissionsForecastsCommandTests.cs

@@ -1,5 +1,4 @@
-using CarbonAware.DataSources.Configuration;
-using NUnit.Framework;
+using NUnit.Framework;
 using System.Text.Json.Nodes;
 
 namespace CarbonAware.CLI.IntegrationTests.Commands.EmissionsForecasts;

src/CarbonAware.CLI/test/integrationTests/Commands/Location/LocationCommandTests.cs

@@ -1,5 +1,4 @@
-using CarbonAware.DataSources.Configuration;
-using NUnit.Framework;
+using NUnit.Framework;
 using System.Text.Json;
 
 namespace CarbonAware.CLI.IntegrationTests.Commands.Location;

src/CarbonAware.CLI/test/integrationTests/IntegrationTestingBase.cs

@@ -1,5 +1,4 @@
-using CarbonAware.DataSources.Configuration;
-using CarbonAware.Interfaces;
+using CarbonAware.Interfaces;
 using CarbonAware.DataSources.ElectricityMaps.Mocks;
 using CarbonAware.DataSources.ElectricityMapsFree.Mocks;
 using CarbonAware.DataSources.Json.Mocks;
@@ -11,6 +10,15 @@
 
 namespace CarbonAware.CLI.IntegrationTests;
 
+public enum DataSourceType
+{
+    None,
+    WattTime,
+    JSON,
+    ElectricityMaps,
+    ElectricityMapsFree,
+}
+
 /// <summary>
 /// A base class that does all the common setup for the Integration Testing
 /// Overrides WebAPI factory by switching out different configurations via _datasource

src/CarbonAware.DataSources/CarbonAware.DataSources.ElectricityMaps/src/CarbonAware.DataSources.ElectricityMaps.csproj

@@ -10,7 +10,6 @@
   <ItemGroup>
     <InternalsVisibleTo Include="CarbonAware.DataSources.ElectricityMaps.Mocks" />
     <InternalsVisibleTo Include="CarbonAware.DataSources.ElectricityMaps.Tests" />
-    <InternalsVisibleTo Include="CarbonAware.DataSources.Registration" />
     <InternalsVisibleTo Include="DynamicProxyGenAssembly2" />
   </ItemGroup>
 

src/CarbonAware.DataSources/CarbonAware.DataSources.ElectricityMaps/src/ElectricityMapsDataSource.cs

@@ -1,10 +1,15 @@
+using CarbonAware.Configuration;
 using CarbonAware.DataSources.ElectricityMaps.Client;
+using CarbonAware.DataSources.ElectricityMaps.Configuration;
 using CarbonAware.DataSources.ElectricityMaps.Model;
 using CarbonAware.Exceptions;
 using CarbonAware.Interfaces;
 using CarbonAware.Model;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.DependencyInjection.Extensions;
 using Microsoft.Extensions.Logging;
-using System.Diagnostics;
+using System.Net;
 
 namespace CarbonAware.DataSources.ElectricityMaps;
 
@@ -40,6 +45,21 @@ public ElectricityMapsDataSource(ILogger<ElectricityMapsDataSource> logger, IEle
         this._locationSource = locationSource;
     }
 
+    public static IServiceCollection ConfigureDI<T>(IServiceCollection services, DataSourcesConfiguration dataSourcesConfig)
+        where T : IDataSource
+    {
+        var configSection = dataSourcesConfig.ConfigurationSection<T>();
+        AddElectricityMapsClient(services, configSection);
+        try
+        {
+            services.TryAddSingleton(typeof(T), typeof(ElectricityMapsDataSource));
+        } catch (Exception ex)
+        {
+            throw new ArgumentException($"ElectricityMapsDataSource is not a supported {typeof(T).Name} data source.", ex);
+        }
+        return services;
+    } 
+
     /// <inheritdoc />
     public async Task<EmissionsForecast> GetCurrentCarbonIntensityForecastAsync(Location location)
     {
@@ -176,4 +196,33 @@ private TimeSpan GetDurationFromHistoryDataPoints(IEnumerable<CarbonIntensity> d
         // the absolute value of the TimeSpan between the two points.
         return first.DateTime.Subtract(second.DateTime).Duration();
     }
+
+    private static void AddElectricityMapsClient(IServiceCollection services, IConfigurationSection configSection)
+    {
+        services.Configure<ElectricityMapsClientConfiguration>(c =>
+        {
+            configSection.Bind(c);
+        });
+
+        var httpClientBuilder = services.AddHttpClient<ElectricityMapsClient>(IElectricityMapsClient.NamedClient);
+
+        var Proxy = configSection.GetSection("Proxy").Get<WebProxyConfiguration>();
+        if (Proxy?.UseProxy == true)
+        {
+            if (String.IsNullOrEmpty(Proxy.Url))
+            {
+                throw new ConfigurationException("Proxy Url is not configured.");
+            }
+            httpClientBuilder.ConfigurePrimaryHttpMessageHandler(() => 
+                new HttpClientHandler() {
+                    Proxy = new WebProxy {
+                        Address = new Uri(Proxy.Url),
+                        Credentials = new NetworkCredential(Proxy.Username, Proxy.Password),
+                        BypassProxyOnLocal = true
+                    }
+                }
+            );
+        }
+        services.TryAddSingleton<IElectricityMapsClient, ElectricityMapsClient>();
+    }
 }

src/CarbonAware.DataSources/CarbonAware.DataSources.ElectricityMaps/test/ElectricityMapsDataSourceTests.cs

@@ -1,8 +1,11 @@
+using CarbonAware.Configuration;
 using CarbonAware.DataSources.ElectricityMaps.Client;
 using CarbonAware.DataSources.ElectricityMaps.Model;
 using CarbonAware.Exceptions;
 using CarbonAware.Interfaces;
 using CarbonAware.Model;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using Moq;
 
@@ -23,6 +26,14 @@ class ElectricityMapsDataSourceTests
     private static string _defaultLongitude => _defaultLocation.Longitude.ToString() ?? "";
     private static DateTimeOffset _defaultDataStartTime = new DateTimeOffset(2022, 4, 18, 12, 32, 42, TimeSpan.FromHours(-6));
 
+    private readonly string TypeKey = $"Configurations:ElectricityMaps:Type";
+    private readonly string UsernameKey = $"Configurations:ElectricityMaps:Username";
+    private readonly string PasswordKey = $"Configurations:ElectricityMaps:Password";
+    private readonly string UseProxyKey = $"Configurations:ElectricityMaps:Proxy:UseProxy";
+    private readonly string ProxyUrlKey = $"Configurations:ElectricityMaps:Proxy:Url";
+    private readonly string ProxyUsernameKey = $"Configurations:ElectricityMaps:Proxy:Username";
+    private readonly string ProxyPasswordKey = $"Configurations:ElectricityMaps:Proxy:Password";
+
     [SetUp]
     public void Setup()
     {
@@ -324,4 +335,79 @@ public async Task GetDurationBetweenHistoryDataPoints_WhenMultipleDataPoints_Ret
         Assert.IsNotNull(second);
         Assert.That(second.Duration, Is.EqualTo(expectedDuration));
     }
+
+    [Test]
+    public void ConfigureDI_ClientProxyTest_With_Missing_ProxyURL_ThrowsException()
+    {
+        // Arrange
+        var inMemorySettings = new Dictionary<string, string> {
+            { TypeKey, "ElectricityMaps" },
+            { UsernameKey, "testUsername" },
+            { PasswordKey, "testPassword123!" },
+            { UseProxyKey, "true" },
+        };
+
+        var configuration = new ConfigurationBuilder()
+            .AddInMemoryCollection(inMemorySettings)
+            .Build();
+
+        var dataSourceConfig = new DataSourcesConfiguration()
+        {
+            EmissionsDataSource = "ElectricityMaps",
+            ForecastDataSource = "ElectricityMaps",
+            Section = configuration.GetSection("Configurations")
+        };
+
+        var serviceCollection = new ServiceCollection();
+
+        // Act & Assert
+        Assert.Throws<ConfigurationException>(() => ElectricityMapsDataSource.ConfigureDI<IEmissionsDataSource>(serviceCollection, dataSourceConfig));
+        Assert.Throws<ConfigurationException>(() => ElectricityMapsDataSource.ConfigureDI<IForecastDataSource>(serviceCollection, dataSourceConfig));
+    }
+
+    [TestCase(true, TestName = "ClientProxyTest, successful: denotes adding ElectricityMaps data sources using proxy.")]
+    [TestCase(false, TestName = "ClientProxyTest, successful: denotes adding ElectricityMaps data sources without using proxy.")]
+    public void ConfigureDI_ClientProxyTest_AddsDataSource(bool withProxyUrl)
+    {
+        // Arrange
+        var inMemorySettings = new Dictionary<string, string> {
+            { TypeKey, "ElectricityMaps" },
+            { UsernameKey, "testUsername" },
+            { PasswordKey, "testPassword123!" },
+            { UseProxyKey, withProxyUrl.ToString() },
+        };
+
+        if (withProxyUrl)
+        {
+            inMemorySettings.Add(ProxyUrlKey, "http://10.10.10.1");
+            inMemorySettings.Add(ProxyUsernameKey, "proxyUsername");
+            inMemorySettings.Add(ProxyPasswordKey, "proxyPassword");
+        }
+
+        var configuration = new ConfigurationBuilder()
+            .AddInMemoryCollection(inMemorySettings)
+            .Build();
+
+        var dataSourceConfig = new DataSourcesConfiguration()
+        {
+            EmissionsDataSource = "ElectricityMaps",
+            ForecastDataSource = "ElectricityMaps",
+            Section = configuration.GetSection("Configurations")
+        };
+
+        var serviceCollection = new ServiceCollection();
+        var emissionsDescriptor = new ServiceDescriptor(typeof(IEmissionsDataSource), typeof(ElectricityMapsDataSource), ServiceLifetime.Singleton);
+        var forecastDescriptor = new ServiceDescriptor(typeof(IForecastDataSource), typeof(ElectricityMapsDataSource), ServiceLifetime.Singleton);
+
+        Assert.That(!serviceCollection.Any(i => i.ToString() == emissionsDescriptor.ToString()));
+        Assert.That(!serviceCollection.Any(i => i.ToString() == forecastDescriptor.ToString()));
+
+        // Act
+        ElectricityMapsDataSource.ConfigureDI<IEmissionsDataSource>(serviceCollection, dataSourceConfig);
+        ElectricityMapsDataSource.ConfigureDI<IForecastDataSource>(serviceCollection, dataSourceConfig);
+
+        // Assert
+        Assert.That(serviceCollection.Any(i => i.ToString() == emissionsDescriptor.ToString()));
+        Assert.That(serviceCollection.Any(i => i.ToString() == forecastDescriptor.ToString()));
+    }
 }

src/CarbonAware.DataSources/CarbonAware.DataSources.ElectricityMapsFree/mock/CarbonAware.DataSources.ElectricityMapsFree.Mocks.csproj

@@ -16,6 +16,7 @@
 
   <ItemGroup>
     <InternalsVisibleTo Include="CarbonAware.CLI.IntegrationTests" />
+    <InternalsVisibleTo Include="CarbonAware.WebApi.IntegrationTests" />
   </ItemGroup>
 
 </Project>