Localstack 上的无服务器部署 Python HTTP API

Question

我从aws-python-http-api模板的无服务器项目创建

我的 serverless.yml 文件如下所示

service: aws-http-api
frameworkVersion: '3'

plugins:
  - serverless-localstack

provider:
  name: aws
  stage: local
  runtime: python3.9
  profile: localstack

functions:
  hello:
    handler: handler.hello
    events:
      - httpApi:
          path: /
          method: get

custom:
  localstack:
    stages:
      - local
    host: http://localhost 
    edgePort: 4566 
    autostart: true
    lambda:
      # Enable this flag to improve performance
      mountCode: True
    docker:
      # Enable this flag to run "docker ..." commands as sudo
      sudo: False
  stages:
    local:
      ...

我正在使用 docker-compose 和 docker-compose.yml 运行 localstack 看起来像

version: '3.0'

services:
  localstack:
    container_name: "${LOCALSTACK_DOCKER_NAME-localstack_latest}"
    image: localstack/localstack:latest
    environment:
      - AWS_DEFAULT_REGION=us-east-1
      - EDGE_PORT=4566
      - DEBUG=${DEBUG-}
      - LAMBDA_EXECUTOR=${LAMBDA_EXECUTOR-}
      - DOCKER_HOST=unix:///var/run/docker.sock
      - HOSTNAME=localhost
            - SERVICES=${SERVICES-serverless
          ,acm,apigateway,cloudformation,cloudwatch
          ,dynamodb,dynamodbstreams,ec2,es,events
          ,firehose,iam,kinesis,kms,lambda,rds
          ,route53,s3,s3api,secretsmanager,ses,sns
          ,sqs,ssm,stepfunctions,sts}
    ports:
      - "127.0.0.1:4566:4566"            # LocalStack Gateway
      - "127.0.0.1:4510-4559:4510-4559"  # external services port range
    volumes:
      - "${LOCALSTACK_VOLUME_DIR:-./volume}:/var/lib/localstack"
      - "/var/run/docker.sock:/var/run/docker.sock"

docker-compose up -d工作正常，我可以在http://127.0.0.1:4566/health上正确看到结果

毕竟我已经进入项目文件夹并按照命令无服务器部署运行并且错误是

UPDATE_FAILED: aws-http-api-local (AWS::CloudFormation::Stack)
undefined

我还运行了下一个 ** serverless deploy --stage local** 和同样的错误。 知道为什么会发生吗？

docker-compose up -d工作正常，我可以在http://127.0.0.1:4566/health上正确看到结果

毕竟我已经进入项目文件夹并按照命令无服务器部署运行并且错误是

UPDATE_FAILED: aws-http-api-local (AWS::CloudFormation::Stack)
undefined

我还运行了下一个 ** serverless deploy --stage local** 和同样的错误。 知道为什么会发生吗？

Answer 1

您好——要运行上面的无服务器示例，您需要访问 LocalStack Pro，因为社区版本不支持在操作期间调用的某些 AWS API。

您需要将docker-compose.yml更新为以下配置：

version: "3.8"

services:
  localstack:
    container_name: "${LOCALSTACK_DOCKER_NAME-localstack_main}"
    image: localstack/localstack-pro  # required for Pro
    ports:
      - "127.0.0.1:4566:4566"            # LocalStack Gateway
      - "127.0.0.1:4510-4559:4510-4559"  # external services port range
      - "127.0.0.1:53:53"                # DNS config (required for Pro)
      - "127.0.0.1:53:53/udp"            # DNS config (required for Pro)
      - "127.0.0.1:443:443"              # LocalStack HTTPS Gateway (required for Pro)
    environment:
      - DEBUG=${DEBUG-}
      - PERSISTENCE=${PERSISTENCE-}
      - LAMBDA_EXECUTOR=${LAMBDA_EXECUTOR-}
      - LOCALSTACK_API_KEY=XXXXXXX  # required for Pro
      - DOCKER_HOST=unix:///var/run/docker.sock
    volumes:
      - "${LOCALSTACK_VOLUME_DIR:-./volume}:/var/lib/localstack"
      - "/var/run/docker.sock:/var/run/docker.sock"

您还需要将serverless.yml更新为以下配置：

service: aws-python-http-api
frameworkVersion: '3'

provider:
  name: aws
  runtime: python3.9

functions:
  hello:
    handler: handler.hello
    events:
      - httpApi:
          path: /
          method: get

plugins:
  - serverless-localstack

custom:
  localstack:
    stages:
      - local

它还将涉及安装serverless-localstack插件。 设置成功后，您可以运行serverless deploy --stage local ，它会产生以下 output：

Using serverless-localstack

Deploying aws-python-http-api to stage local (us-east-1)
Skipping template validation: Unsupported in Localstack

✔ Service deployed to stack aws-python-http-api-local (14s)

endpoint: GET - https://e2af2ca4.execute-api.localhost.localstack.cloud:4566//
functions:
  hello: aws-python-http-api-local-hello (119 kB)