如何在localstack上运行AWS Lambda dotnet

Question

我使用Amazon模板使用C#Dotnet3.1创建了一个AWS Lambda解决方案

dotnet new serverless.AspNetCoreWebAPI -n MyDotNet.Lambda.Service

这将创建一个lambda函数，其处理程序为mydotnet.lambda.service::mydotnet.lambda.service.lambda.frice.lambdaEntryPoint：：FunctionHandlerAsync以及一些Serverless.Template文件和aws-lambda-tools-defaults.json

部署它的标准方法是安装amazon.lambda.tools

dotnet tool update -g Amazon.Lambda.Tools

然后运行

dotnet lambda deploy-serverless --profile myawsprofile

请注意，配置文件是可选的，但我在该配置文件下配置了AWS。这将提示输入CloudFormation堆栈名称（例如：foo）和S3 bucket（例如：my-bucket）并将其部署到自定义配置文件myAWSProfile下配置的“真实”AWS

目前一切正常。现在我刚刚发现https://github.com/localstack/localstack是本地运行AWS平台的好方法，所以我使用docker-compose文件localstack-compose.yml来旋转容器

version: '3.8'

services:
  localstack:
    container_name: "${LOCALSTACK_DOCKER_NAME-localstack_main}"
    image: localstack/localstack-full
    network_mode: bridge
    ports:
      - "4566:4566"
      - "4571:4571"
      - "${PORT_WEB_UI-8080}:${PORT_WEB_UI-8080}"
    environment:
      - SERVICES=${SERVICES- }
      - DEBUG=${DEBUG- }
      - DATA_DIR=${DATA_DIR- }
      - PORT_WEB_UI=${PORT_WEB_UI- }
      - LAMBDA_EXECUTOR=${LAMBDA_EXECUTOR- }
      - KINESIS_ERROR_PROBABILITY=${KINESIS_ERROR_PROBABILITY- }
      - DOCKER_HOST=unix:///var/run/docker.sock
      - HOST_TMP_FOLDER=${TMPDIR}
    volumes:
      - "${TMPDIR:-/tmp/localstack}:/tmp/localstack"
      - "/var/run/docker.sock:/var/run/docker.sock"

像这样：

docker-compose -f localstack-compose.yml up

并且它在端口4566下运行

为了使用LocalStack运行AWS CLI，我安装了包装器https://github.com/LocalStack/awscli-local，这样我就可以执行以下操作

awslocal s3 ls

我太新了，无法理解我所学习的大部分教程。其中一些提到了无服务器框架，但我只是在使用localstack作为docker容器。我还安装了SAM CLI，以备需要（尽管我还不明白是为了什么）

我尝试将它部署到本地堆栈

dotnet lambda deploy-serverless --profile default

我想这是等价的，但我知道

Error uploading to MyDotNet.Lambda.Service/AspNetCoreFunction-CodeUri-Or-ImageUri-637509113851513062-637509113886357582.zip in bucket foo: The bucket you are attempting to access must be addressed using the specified endpoint. Please send all future requests to this endpoint

虽然我有一个桶s3://foo in localstack

要找到一个我可以遵循的AWS基本知识水平的例子真的很复杂。有没有什么我错过的指导，或者一个很好的链接/教程，告诉我如何一步一步实现我想要的东西？谢谢

更新1（2021年3月11日）我已经逐步尝试使用Amazon模板https://gitlab.com/sunnyatticsoftware/sandbox/localstack-sandbox/-/tree/master/02-lambda-dotnet-webapi创建的web api项目

但我发现了问题。

步骤：首先为lambda执行创建角色

awslocal iam create-role --role-name lambda-dotnet-webapi-ex --assume-role-policy-document file://trust-policy.json

将策略附加到角色以授予执行权限

awslocal iam attach-role-policy --role-name lambda-dotnet-webapi-ex --policy-arn arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole

创建Lambda函数

awslocal lambda create-function --function-name lambda-dotnet-webapi-function --zip-file fileb://function.zip --handler Sample.Lambda.DotNet.WebApi::Sample.Lambda.DotNet.WebApi.LambdaEntryPoint::FunctionHandlerAsync --runtime dotnetcore3.1 --role arn:aws:iam::000000000000:role/lambda-dotnet-webapi-ex

使用base64实用程序调用AWS Lambda来解码日志

awslocal lambda invoke --function-name lambda-dotnet-webapi-function out --log-type Tail --query 'LogResult' --output text | base64 -d

它返回：

iptables v1.4.21: can't initialize iptables table `nat': iptables who? (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
info: Microsoft.Hosting.Lifetime[0]
      Application started. Press Ctrl+C to shut down.
[Information] Microsoft.Hosting.Lifetime: Application started. Press Ctrl+C to shut down.
[Information] Microsoft.Hosting.Lifetime: Hosting environment: Production
[Information] Microsoft.Hosting.Lifetime: Content root path: /var/task
info: Microsoft.Hosting.Lifetime[0]
      Hosting environment: Production
info: Microsoft.Hosting.Lifetime[0]
      Content root path: /var/task
START RequestId: a5eb1d2d-d908-15f6-ace3-d4d0e01a0066 Version: $LATEST
Could not load file or assembly 'System.IO.Pipelines, Version=4.0.2.1, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'. The system cannot find the file specified.
: FileNotFoundException
   at Amazon.Lambda.AspNetCoreServer.AbstractAspNetCoreFunction`2.FunctionHandlerAsync(TREQUEST request, ILambdaContext lambdaContext)
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine)
   at Amazon.Lambda.AspNetCoreServer.AbstractAspNetCoreFunction`2.FunctionHandlerAsync(TREQUEST request, ILambdaContext lambdaContext)
   at lambda_method(Closure , Stream , Stream , LambdaContextInternal )


END RequestId: a5eb1d2d-d908-15f6-ace3-d4d0e01a0066
REPORT RequestId: a5eb1d2d-d908-15f6-ace3-d4d0e01a0066  Init Duration: 2305.87 ms       Duration: 33.29 ms      Billed Duration: 100 ms      Memory Size: 1536 MB    Max Memory Used: 0 MB
Starting daemons...
ImportError: No module named site

有没有人有一个可行的例子？

更新2有趣的是，我尝试使用真正的AWS（AWS凭据中的一个不同配置文件），我也得到了一个错误，但它是不同的。

创建角色

aws iam create-role --role-name lambda-dotnet-webapi-ex --assume-role-policy-document file://trust-policy.json --profile diegosasw

列出角色

aws iam list-roles --profile diegosasw

附加策略

aws iam attach-role-policy --role-name lambda-dotnet-webapi-ex
 --policy-arn arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole --profile diegosasw

创建lambda

aws lambda create-function --function-name lambda-dotnet-webap
i-function --zip-file fileb://function.zip --handler Sample.Lambda.DotNet.WebApi::Sample.Lambda.DotNet.WebApi.LambdaEntryPoint::FunctionHa
ndlerAsync --runtime dotnetcore3.1 --role arn:aws:iam::308309238958:role/lambda-dotnet-webapi-ex --profile diegosasw

调用

aws lambda invoke --function-name lambda-dotnet-webapi-function --profile diegosasw out --log-type Tail --query 'LogResult' --output text | base64 -d

它返回

START RequestId: 7d77489f-869b-4e4d-87a0-ac800d71eb2d Version: $LATEST
warn: Amazon.Lambda.AspNetCoreServer.AbstractAspNetCoreFunction[0]
      Request does not contain domain name information but is derived from APIGatewayProxyFunction.
[Warning] Amazon.Lambda.AspNetCoreServer.AbstractAspNetCoreFunction: Request does not contain domain name information but is derived from APIGatewayProxyFunction.
Object reference not set to an instance of an object.: NullReferenceException
   at Amazon.Lambda.AspNetCoreServer.APIGatewayProxyFunction.MarshallRequest(InvokeFeatures features, APIGatewayProxyRequest apiGatewayRequest, ILambdaContext lambdaContext)
   at Amazon.Lambda.AspNetCoreServer.AbstractAspNetCoreFunction`2.FunctionHandlerAsync(TREQUEST request, ILambdaContext lambdaContext)
   at lambda_method(Closure , Stream , Stream , LambdaContextInternal )


END RequestId: 7d77489f-869b-4e4d-87a0-ac800d71eb2d
REPORT RequestId: 7d77489f-869b-4e4d-87a0-ac800d71eb2d  Duration: 755.06 ms     Billed Duration: 756 ms Memory Size: 128 MB     Max Memory Used: 87 MB    Init Duration: 462.09 ms

Answer 1

我让它同时适用于AWS和LocalStack（即：awslocal）。下面是使用AWS CLI的步骤。下面是回购示例https://gitlab.com/sunnyatticsoftware/sandbox/localstack-sandbox/-/tree/master/03-lambda-dotnet-empty

从Amazon模板创建空示例C#lambda函数

dotnet new lambda.EmptyFunction -n Sample.Lambda.DotNet

汇编出版

dotnet build
dotnet publish -c Release -o publish

Zip lambda文件

cd publish
zip -r ../function.zip *

创建角色

aws --profile diegosasw iam create-role --role-name lambda-dotnet-ex --assume-role-policy-document '{"Version": "2012-10-17", "Statement": [{ "Effect": "Allow", "Principal": {"Service": "lambda.amazonaws.com"}, "Action": "sts:AssumeRole"}]}'

将AWSLambdaBasicExecutionRole策略附加到角色

aws --profile diegosasw iam attach-role-policy --role-name lambda-dotnet-ex --policy-arn arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole

创建lambda

aws --profile diegosasw lambda create-function --function-name lambda-dotnet-function --zip-file fileb://function.zip --handler Sample.Lambda.DotNet::Sample.Lambda.DotNet.Function::FunctionHandler --runtime dotnetcore3.1 --role arn:aws:iam::308309238958:role/lambda-dotnet-ex

调用lambda

aws --profile diegosasw lambda invoke --function-name lambda-dotnet-function --payload "\"Just Checking If Everything is OK\"" response.json --log-type Tail

对于localStack来说是类似的，但是当然要用AWS替换AWS，而且我没有指定任何配置文件，但是您可以使用--profile default或者您的.aws/credential

创建角色

awslocal iam create-role --role-name lambda-dotnet-ex --assume-role-policy-document '{"Version": "2012-10-17", "Statement": [{ "Effect": "Allow", "Principal": {"Service": "lambda.amazonaws.com"}, "Action": "sts:AssumeRole"}]}'

将AWSLambdaBasicExecutionRole策略附加到角色

awslocal iam attach-role-policy --role-name lambda-dotnet-ex --policy-arn arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole

创建lambda

awslocal lambda create-function --function-name lambda-dotnet-function --zip-file fileb://function.zip --handler Sample.Lambda.DotNet::Sample.Lambda.DotNet.Function::FunctionHandler --runtime dotnetcore3.1 --role arn:aws:iam::000000000000:role/lambda-dotnet-ex

在localstack中调用lambda，传递json负载（字符串是有效的json）

awslocal lambda invoke --function-name lambda-dotnet-function --payload "\"Just Checking If Everything is OK again\"" response.json --log-type Tail

查看函数

awslocal lambda list-functions

删除功能

awslocal lambda delete-function --function-name lambda-dotnet-function

对于dotnet工具，等价物是

dotnet lambda invoke-function lambda-dotnet-function --payload "Just Checking If Everything is OK" --profile diegosasw