Add sqlite diagnostics (#133)

* Set up CI with Azure Pipelines

* Add sqlite diagnostics

azure-pipelines.yml

+# ASP.NET Core
+# Build and test ASP.NET Core web applications targeting .NET Core.
+# Add steps that run tests, create a NuGet package, deploy, and more:
+# https://docs.microsoft.com/vsts/pipelines/languages/dotnet-core
+
+pool:
+  vmImage: 'Ubuntu 16.04'
+
+variables:
+  buildConfiguration: 'Release'
+
+steps:
+- script: dotnet build --configuration $(buildConfiguration)
+  displayName: 'dotnet build $(buildConfiguration)'

src/SkyWalking.Agent.AspNetCore/Extensions/ServiceCollectionExtensions.cs

@@ -58,7 +58,7 @@ namespace SkyWalking.Agent.AspNetCore
             services.AddSingleton<IHostedService, InstrumentationHostedService>();
             services.AddSingleton<IEnvironmentProvider, HostingEnvironmentProvider>();
             services.AddGrpcTransport().AddLogging();
-            services.AddSkyWalkingExtensions().AddAspNetCoreHosting().AddHttpClient().AddSqlClient().AddEntityFrameworkCore(c => c.AddPomeloMysql().AddNpgsql());
+            services.AddSkyWalkingExtensions().AddAspNetCoreHosting().AddHttpClient().AddSqlClient().AddEntityFrameworkCore(c => c.AddPomeloMysql().AddNpgsql().AddSqlite());
             return services;
         }
 

src/SkyWalking.Agent.AspNetCore/SkyWalking.Agent.AspNetCore.csproj

-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
     <Import Project="..\..\build\common.props" />
     <PropertyGroup>
         <Description>SkyWalking ASP.NET Core Agent.</Description>
@@ -20,6 +20,7 @@
         <ProjectReference Include="..\SkyWalking.Diagnostics.AspNetCore\SkyWalking.Diagnostics.AspNetCore.csproj" />
         <ProjectReference Include="..\SkyWalking.Diagnostics.EntityFrameworkCore.Npgsql\SkyWalking.Diagnostics.EntityFrameworkCore.Npgsql.csproj" />
         <ProjectReference Include="..\SkyWalking.Diagnostics.EntityFrameworkCore.Pomelo.MySql\SkyWalking.Diagnostics.EntityFrameworkCore.Pomelo.MySql.csproj" />
+        <ProjectReference Include="..\SkyWalking.Diagnostics.EntityFrameworkCore.Sqlite\SkyWalking.Diagnostics.EntityFrameworkCore.Sqlite.csproj" />
         <ProjectReference Include="..\SkyWalking.Diagnostics.EntityFrameworkCore\SkyWalking.Diagnostics.EntityFrameworkCore.csproj" />
         <ProjectReference Include="..\SkyWalking.Diagnostics.HttpClient\SkyWalking.Diagnostics.HttpClient.csproj" />
         <ProjectReference Include="..\SkyWalking.Diagnostics.SqlClient\SkyWalking.Diagnostics.SqlClient.csproj" />

src/SkyWalking.Diagnostics.EntityFrameworkCore.Sqlite/SqliteEFCoreSpanMetadataProvider.cs

@@ -37,7 +37,7 @@ namespace SkyWalking.Diagnostics.EntityFrameworkCore
             switch (connection.DataSource)
             {
                     case "":
-                        dataSource = "localhost";
+                        dataSource = "sqlite:memory:db";
                         break;
                     default:
                         dataSource = connection.DataSource;