Amazon web services 无服务器&x2014 ；如何将S3 bucket name作为环境变量传递给我的应用程序

我需要向我的应用程序提供无服务器为我创建的S3 bucket的名称。这是我的

serverless.yml

文件的简化版本

service: dummy-service
app: dummy-service

custom:
  bucket: "I have no idea what to write here!"

provider:
  name: aws
  runtime: nodejs10.x
  region: eu-central-1
  iamRoleStatements:
    - Effect: Allow
      Action:
        - s3:PutObject
        - s3:GetObject
      Resource:
        - "Fn::Join":
          - ""
          - - "arn:aws:s3:::"
            - Ref: DummyBucket
            - "*"
  environment:
    BUCKET: ${self:custom.bucket}

resources:
  Resources:
    DummyBucket:
      Type: AWS::S3::Bucket

functions:
  createOrUpdate:
    handler: handler.dummy
    events:
      - http:
          path: dummy
          method: POST

我已经在

iarolestaments

部分找到了如何进行引用的方法。但不知道如何将其作为环境变量的字符串

---

欢迎任何帮助。谢谢。

您可以使用

Ref

获取bucket名称

service: dummy-service
app: dummy-service

custom:
  bucket:
    Ref: DummyBucket

provider:
  name: aws
  runtime: nodejs10.x
  region: eu-central-1
  iamRoleStatements:
    - Effect: Allow
      Action:
        - s3:PutObject
        - s3:GetObject
      Resource:
        - "Fn::Join":
          - ""
          - - "arn:aws:s3:::"
            - Ref: DummyBucket
            - "*"
  environment:
    BUCKET: ${self:custom.bucket}

resources:
  Resources:
    DummyBucket:
      Type: AWS::S3::Bucket

functions:
  createOrUpdate:
    handler: handler.dummy
    events:
      - http:
          path: dummy
          method: POST