我有一个基于 .NET Core API 网关的项目。我想引入依赖注入(inject)(di),因为我需要引入的很多包都是基于这种模式的,所以需要使用IServiceCollection等等。
我在网上找到的将 DI 引入 AWS Lambda 的示例仅关注标准 Lambda 项目,其中入口点是 Handler 函数。我不确定如何用我的 API Gateway 项目复制它,因为它使用不同的结构。我有一个无参数构造函数
Public Functions()
{}
以及许多实例
public async Task<APIGatewayProxyResponse> MyProxyResponse(APIGatewayProxyRequest request, ILambdaContext context)
{
}
我不清楚如何将 DI 引入到这个项目中。例如,采用 .NET Core MemCached 包,详细信息请参见此处 https://github.com/cnblogs/EnyimMemcachedCore
我可以设置以下内容:
public class Functions
{
public IConfiguration Configuration { get; private set; }
private void ConfigureServices(IServiceCollection serviceCollection)
{
serviceCollection.AddEnyimMemcached();
serviceCollection.AddEnyimMemcached(options => options.AddServer(Environment.GetEnvironmentVariable("CACHE_URL"),
Convert.ToInt32(Environment.GetEnvironmentVariable("CACHE_PORT"))));
// TODO: Register services with DI system
}
private readonly AmazonSimpleSystemsManagementClient _systemsManagementClient;
private readonly JSchema _jSchema;
private readonly loyaltyContext _loyaltyContext;
private readonly IMemcachedClient _memcachedClientv2;
但是 _memcachedClientv2 从未被分配,因此它的值将为 null。我不确定如何从上面的内容到达每个 APIGatewayProxyRequest 方法中工作的 _memcachedClientv2。
最佳答案
Naadem Taj 已经为您指明了正确的方向,但这里有一个示例可供澄清。
您需要在 Startup.cs 中设置服务,然后您就可以访问您创建的其他服务中的服务。
举个例子:
public class Startup
{
public IConfiguration Configuration { get; private set; }
public Startup(IConfiguration configuration)
{
Configuration = configuration;
}
private void ConfigureServices(IServiceCollection serviceCollection)
{
serviceCollection.AddEnyimMemcached(options =>
options.AddServer(Environment.GetEnvironmentVariable("CACHE_URL"),
Convert.ToInt32(Environment.GetEnvironmentVariable("CACHE_PORT"))));
serviceCollection.AddScoped<IFunctions, Functions>();
// TODO: Register services with DI system
}
}
在你的函数中
public interface IFunctions
{
async Task DoStuff();
}
public class Functions : IFunctions
{
private readonly AmazonSimpleSystemsManagementClient _systemsManagementClient;
private readonly JSchema _jSchema;
private readonly loyaltyContext _loyaltyContext;
private readonly IMemcachedClient _memcachedClientv2;
public Functions(loyaltyContext context, AmazonSimpleSystemsManagementClient amazonClient, JSchema jschema, IMemcachedClient memcachedClient)
{
_loyaltyContext = context;
_systemsManagementClient= amazonClient;
_jSchema = jschema;
_memcachedClientv2 = memcachedClient;
}
public async Task DoStuff()
{
// Do stuff here
}
}
关于amazon-web-services - .NET Core API Gateway (AWS) 如何设置依赖注入(inject) (DI) 以使用 MemCached .NET Core 包、基于 DI 的记录器等,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/63348509/