Merge pull request #60 from alastairtree/feat/netcore2

Upgrade to version 2 (netstandard 2/dotnet core)

Author: alastairtree

.gitattributes

@@ -0,0 +1,63 @@
+###############################################################################
+# Set default behavior to automatically normalize line endings.
+###############################################################################
+* text=auto
+
+###############################################################################
+# Set default behavior for command prompt diff.
+#
+# This is need for earlier builds of msysgit that does not have it on by
+# default for csharp files.
+# Note: This is only used by command line
+###############################################################################
+#*.cs     diff=csharp
+
+###############################################################################
+# Set the merge driver for project and solution files
+#
+# Merging from the command prompt will add diff markers to the files if there
+# are conflicts (Merging from VS is not affected by the settings below, in VS
+# the diff markers are never inserted). Diff markers may cause the following 
+# file extensions to fail to load in VS. An alternative would be to treat
+# these files as binary and thus will always conflict and require user
+# intervention with every merge. To do so, just uncomment the entries below
+###############################################################################
+#*.sln       merge=binary
+#*.csproj    merge=binary
+#*.vbproj    merge=binary
+#*.vcxproj   merge=binary
+#*.vcproj    merge=binary
+#*.dbproj    merge=binary
+#*.fsproj    merge=binary
+#*.lsproj    merge=binary
+#*.wixproj   merge=binary
+#*.modelproj merge=binary
+#*.sqlproj   merge=binary
+#*.wwaproj   merge=binary
+
+###############################################################################
+# behavior for image files
+#
+# image files are treated as binary by default.
+###############################################################################
+#*.jpg   binary
+#*.png   binary
+#*.gif   binary
+
+###############################################################################
+# diff behavior for common document formats
+# 
+# Convert binary document formats to text before diffing them. This feature
+# is only available from the command line. Turn it on by uncommenting the 
+# entries below.
+###############################################################################
+#*.doc   diff=astextplain
+#*.DOC   diff=astextplain
+#*.docx  diff=astextplain
+#*.DOCX  diff=astextplain
+#*.dot   diff=astextplain
+#*.DOT   diff=astextplain
+#*.pdf   diff=astextplain
+#*.PDF   diff=astextplain
+#*.rtf   diff=astextplain
+#*.RTF   diff=astextplain

CacheDatabaseQueriesApiSample/CacheDatabaseQueriesApiSample.csproj

@@ -0,0 +1,21 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp2.2</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.App" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="2.2.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <DotNetCliToolReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Tools" Version="2.0.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\LazyCache.AspNetCore\LazyCache.AspNetCore.csproj" />
+    <ProjectReference Include="..\LazyCache\LazyCache.csproj" />
+  </ItemGroup>
+
+</Project>

Samples/ApiAsyncCachingSample/Controllers/DbQueriesController.cs renamed to CacheDatabaseQueriesApiSample/Controllers/DbQueriesController.cs

@@ -1,9 +1,9 @@
-using System.Web.Http;
-using ApiAsyncCachingSample.Models;
+using CacheDatabaseQueriesApiSample;
+using Microsoft.AspNetCore.Mvc;
 
 namespace ApiAsyncCachingSample.Controllers
 {
-    public class DbQueriesController : ApiController
+    public class DbQueriesController : Controller
     {
         [HttpGet]
         [Route("api/dbQueries")]

CacheDatabaseQueriesApiSample/Controllers/DbTimeController.cs

@@ -0,0 +1,40 @@
+using System;
+using LazyCache;
+using Microsoft.AspNetCore.Mvc;
+
+namespace CacheDatabaseQueriesApiSample.Controllers
+{
+    public class DbTimeController : Controller
+    {
+        private readonly IAppCache cache;
+        private readonly string cacheKey = "DbTimeController.Get";
+        private readonly DbTimeContext dbContext;
+
+
+        public DbTimeController(DbTimeContext context, IAppCache cache)
+        {
+            dbContext = context;
+            this.cache = cache;
+        }
+
+        [HttpGet]
+        [Route("api/dbtime")]
+        public DbTimeEntity Get()
+        {
+            Func<DbTimeEntity> actionThatWeWantToCache = () => dbContext.GeDbTime();
+
+            var cachedDatabaseTime = cache.GetOrAdd(cacheKey, actionThatWeWantToCache);
+
+            return cachedDatabaseTime;
+        }
+
+        [HttpDelete]
+        [Route("api/dbtime")]
+        public IActionResult DeleteFromCache()
+        {
+            cache.Remove(cacheKey);
+            var friendlyMessage = new {Message = $"Item with key '{cacheKey}' removed from server in-memory cache"};
+            return Ok(friendlyMessage);
+        }
+    }
+}

CacheDatabaseQueriesApiSample/DbTimeContext.cs

@@ -0,0 +1,35 @@
+using System.Linq;
+using Microsoft.EntityFrameworkCore;
+
+namespace CacheDatabaseQueriesApiSample
+{
+    public class DbTimeContext : DbContext
+    {
+        private static int databaseRequestCounter; //just for demo - don't use static fields for statistics!
+
+        public DbTimeContext(DbContextOptions<DbTimeContext> options)
+            : base(options)
+        {
+        }
+
+        // simulate a table in the database so we can get just one row with the current time
+        private DbSet<DbTimeEntity> Times { get; set; }
+
+        public static int DatabaseRequestCounter()
+        {
+            return databaseRequestCounter;
+        }
+
+        public DbTimeEntity GeDbTime()
+        {
+            // get the current time from SQL server right now asynchronously (simulating a slow query)
+            var result = Times
+                .FromSql("WAITFOR DELAY '00:00:00:500'; SELECT 1 as [ID], GETDATE() as [TimeNowInTheDatabase]")
+                .Single();
+
+            databaseRequestCounter++;
+
+            return result;
+        }
+    }
+}

CacheDatabaseQueriesApiSample/DbTimeEntity.cs

@@ -0,0 +1,23 @@
+using System;
+
+namespace CacheDatabaseQueriesApiSample
+{
+    /// <summary>
+    ///     Simulates loading a record from a table, but really just gets the current datatime from the database
+    /// </summary>
+    public class DbTimeEntity
+    {
+        public DbTimeEntity(DateTime now)
+        {
+            TimeNowInTheDatabase = now;
+        }
+
+        public DbTimeEntity()
+        {
+        }
+
+        public virtual int id { get; set; }
+
+        public virtual DateTime TimeNowInTheDatabase { get; set; }
+    }
+}

CacheDatabaseQueriesApiSample/Program.cs

@@ -0,0 +1,20 @@
+using Microsoft.AspNetCore;
+using Microsoft.AspNetCore.Hosting;
+
+namespace CacheDatabaseQueriesApiSample
+{
+    public class Program
+    {
+        public static void Main(string[] args)
+        {
+            BuildWebHost(args).Run();
+        }
+
+        public static IWebHost BuildWebHost(string[] args)
+        {
+            return WebHost.CreateDefaultBuilder(args)
+                .UseStartup<Startup>()
+                .Build();
+        }
+    }
+}

CacheDatabaseQueriesApiSample/Properties/launchSettings.json

@@ -0,0 +1,29 @@
+{
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:52671/",
+      "sslPort": 0
+    }
+  },
+  "profiles": {
+    "IIS Express": {
+        "commandName": "IISExpress",
+        "launchBrowser": true,
+        "launchUrl": "/",
+        "environmentVariables": {
+            "ASPNETCORE_ENVIRONMENT": "Development"
+        }
+    },
+    "CacheDatabaseQueriesApiSample": {
+      "commandName": "Project",
+      "launchBrowser": true,
+      "launchUrl": "/",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      },
+      "applicationUrl": "http://localhost:52672/"
+    }
+  }
+}

CacheDatabaseQueriesApiSample/Startup.cs

@@ -0,0 +1,45 @@
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace CacheDatabaseQueriesApiSample
+{
+    public class Startup
+    {
+        public Startup(IConfiguration configuration)
+        {
+            Configuration = configuration;
+        }
+
+        public IConfiguration Configuration { get; }
+
+        // This method gets called by the runtime. Use this method to add services to the container.
+        public void ConfigureServices(IServiceCollection services)
+        {
+            services.AddMvc();
+
+            // just for demo - use app settings for db config
+            var connection =
+                @"Server=(localdb)\projectsv13;Database=Master;Trusted_Connection=True;ConnectRetryCount=0";
+
+            // register the database
+            services.AddDbContext<DbTimeContext>(options => options.UseSqlServer(connection));
+
+            // Register IAppCache as a singleton CachingService
+            services.AddLazyCache();
+        }
+
+        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
+        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
+        {
+            if (env.IsDevelopment())
+                app.UseDeveloperExceptionPage();
+
+            app.UseDefaultFiles();
+            app.UseStaticFiles();
+            app.UseMvc();
+        }
+    }
+}

CacheDatabaseQueriesApiSample/appsettings.Development.json

@@ -0,0 +1,10 @@
+{
+  "Logging": {
+    "IncludeScopes": false,
+    "LogLevel": {
+      "Default": "Debug",
+      "System": "Information",
+      "Microsoft": "Information"
+    }
+  }
+}