Updated code to use MID for SQL DB access

Author: ganrad

ClaimsApi.csproj

@@ -27,6 +27,7 @@
     <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="3.1.4" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="3.1.4" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="3.1.4" />
+    <PackageReference Include="Microsoft.Azure.Services.AppAuthentication" Version="1.4.0" />
     <!-- <PackageReference Include="Swashbuckle.AspNetCore" Version="5.0.0-rc4" /> -->
     <PackageReference Include="Swashbuckle.AspNetCore" Version="5.4.1" />
   </ItemGroup>

Models/ClaimsContext.cs

@@ -2,6 +2,8 @@
 namespace ClaimsApi.Models {
     public class ClaimsContext : DbContext {
         public ClaimsContext(DbContextOptions<ClaimsContext> options) : base(options) {
+	    var conn = (Microsoft.Data.SqlClient.SqlConnection) Database.GetDbConnection();
+	    conn.AccessToken = (new Microsoft.Azure.Services.AppAuthentication.AzureServiceTokenProvider()).GetAccessTokenAsync("https://database.windows.net/").Result;
 
         }
         public DbSet<ClaimItem> ClaimItems { get; set; }
@@ -62,4 +64,4 @@ protected override void OnModelCreating(ModelBuilder modelBuilder) {
                 .HasDefaultValueSql("NEXT VALUE FOR ServiceLineNumbers");
         }
     }
-}
+}

appsettings.json

@@ -8,7 +8,7 @@
   },
   "AllowedHosts": "*",
   "ConnectionStrings": {
-    "SqlServerDb": "Server=tcp:#{SQL_SRV_PREFIX}#.database.windows.net;Initial Catalog=ClaimsDB;Persist Security Info=False;User ID=#{SQL_USER_ID}#;Password=#{SQL_USER_PWD}#;MultipleActiveResultSets=False;Encrypt=True;TrustServerCertificate=False;Connection Timeout=30;"
+    "SqlServerDb": "Server=tcp:graksdb.database.windows.net,1433;Database=grakslab;"
   },
   "ApplicationInsights": {
     "InstrumentationKey": "<Instrumentation Key>"