Swift OpenAPI 的 AWS Lambda 传输

mkdir quoteapi && cd quoteapi
swift package init --name quoteapi --type executable

#
# the $ signs are escaped (\$) to work with the cat << EOF command
# if you choose to copy the content directly to a text editor,
# be sure to remove the \ (that means \$ becomes $)
#

cat << EOF > Sources/openapi-generator-config.yaml
generate:
  - types
  - server
EOF

cat << EOF > Package.swift
// swift-tools-version: 5.9
// The swift-tools-version declares the minimum version of Swift required to build this package.

import PackageDescription

let package = Package(
  name: "QuoteService",
  platforms: [
    .macOS(.v13), .iOS(.v15), .tvOS(.v15), .watchOS(.v6),
  ],
  products: [
    .executable(name: "QuoteService", targets: ["QuoteService"]),
  ],
  dependencies: [
    .package(url: "https://github.com/apple/swift-openapi-generator.git", from: "1.0.0"),
    .package(url: "https://github.com/apple/swift-openapi-runtime.git", from: "1.0.0"),
    .package(url: "https://github.com/swift-server/swift-aws-lambda-runtime.git", from: "1.0.0-alpha.1"),
    .package(url: "https://github.com/swift-server/swift-aws-lambda-events.git", from: "0.1.0"),
    .package(url: "https://github.com/sebsto/swift-openapi-lambda", from: "0.1.1") 
  ],
  targets: [
    .executableTarget(
      name: "QuoteService",
      dependencies: [
        .product(name: "AWSLambdaRuntime", package: "swift-aws-lambda-runtime"),
        .product(name: "AWSLambdaEvents", package: "swift-aws-lambda-events"),
        .product(name: "OpenAPIRuntime",package: "swift-openapi-runtime"),
        .product(name: "OpenAPILambda",package: "swift-openapi-lambda"),
      ],
      path: "Sources",
      resources: [ 
        .copy("openapi.yaml"),
        .copy("openapi-generator-config.yaml")
      ],
      plugins: [
        .plugin(
            name: "OpenAPIGenerator",
            package: "swift-openapi-generator"
        )
      ]  
    ),
  ]
)
EOF

swift build

rm Sources/main.swift
cat << EOF > Sources/QuoteService.swift
import Foundation
import OpenAPIRuntime
import OpenAPILambda

@main
struct QuoteServiceImpl: APIProtocol, OpenAPILambdaHttpApi {

  init(transport: OpenAPILambdaTransport) throws {
    try self.registerHandlers(on: transport)
  }

  func getQuote(_ input: Operations.getQuote.Input) async throws -> Operations.getQuote.Output {

    let symbol = input.path.symbol

    let price = Components.Schemas.quote(
        symbol: symbol,
        price: Double.random(in: 100..<150).rounded(),
        change: Double.random(in: -5..<5).rounded(),
        changePercent: Double.random(in: -0.05..<0.05),
        volume: Double.random(in: 10000..<100000).rounded(),
        timestamp: Date())

    return .ok(.init(body: .json(price)))
  }
}
EOF

swift build

#
# the $ signs are escaped (\$) to work with the cat << EOF command
# if you choose to copy the content directly to a text editor,
# be sure to remove the \ (that means \$ becomes $)
#

cat << EOF > Dockerfile
# image used to compile your Swift code
FROM public.ecr.aws/docker/library/swift:5.9.1-amazonlinux2
RUN yum -y install git jq tar zip openssl-devel
EOF

cat << EOF > Makefile
### Add functions here and link them to builder-bot format MUST BE "build-FunctionResourceName in template.yaml"

build-QuoteService: builder-bot

# Helper commands
deploy:
	sam deploy 

logs:
	sam logs --stack-name QuoteService --name QuoteService 

tail:
	sam logs --stack-name QuoteService --name QuoteService --tail

######################  No Change required below this line  ##########################

builder-bot:
	\$(eval \$@PRODUCT = \$(subst build-,,\$(MAKECMDGOALS)))
	\$(eval \$@BUILD_DIR = \$(PWD)/.aws-sam/build-swift)
	\$(eval \$@STAGE = \$(\$@BUILD_DIR)/lambda)
	\$(eval \$@ARTIFACTS_DIR = \$(PWD)/.aws-sam/build/\$(\$@PRODUCT))
	
	# build docker image to compile Swift for Linux
	docker build -f Dockerfile . -t swift-builder

	# prep directories
	mkdir -p \$(\$@BUILD_DIR)/lambda \$(\$@ARTIFACTS_DIR)

	# compile application inside Docker image using source code from local project folder
	docker run --rm -v \$(\$@BUILD_DIR):/build-target -v \`pwd\`:/build-src -w /build-src swift-builder bash -cl "swift build --static-swift-stdlib --product \$(\$@PRODUCT) -c release --build-path /build-target"
	
	# create lambda bootstrap file
	docker run --rm -v \$(\$@BUILD_DIR):/build-target -v \`pwd\`:/build-src -w /build-src swift-builder bash -cl "cd /build-target/lambda && ln -s \$(\$@PRODUCT) /bootstrap"
  
	# copy binary to stage
	cp \$(\$@BUILD_DIR)/release/\$(\$@PRODUCT) \$(\$@STAGE)/bootstrap
  
  	# copy app from stage to artifacts dir
	cp \$(\$@STAGE)/* \$(\$@ARTIFACTS_DIR)
   
EOF

#
# the $ signs are escaped (\$) to work with the cat << EOF command
# if you choose to copy the content directly to a text editor,
# be sure to remove the \ (that means \$ becomes $)
#

cat << EOF > template.yml
AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: SAM Template for QuoteService

Globals:
  Function:
    Timeout: 60
    CodeUri: .
    Handler: swift.bootstrap
    Runtime: provided.al2
    MemorySize: 512
    Architectures:
      - arm64

Resources:
  # Lambda function
  QuoteService:
    Type: AWS::Serverless::Function
    Properties:
      Events:
        # pass through all HTTP verbs and paths
        Api:
          Type: HttpApi
          Properties:
            Path: /{proxy+}
            Method: ANY

    Metadata:
      BuildMethod: makefile

# print API endpoint and name of database table
Outputs:
  SwiftAPIEndpoint:
    Description: "API Gateway endpoint URL for your application"
    Value: !Sub "https://\${ServerlessHttpApi}.execute-api.\${AWS::Region}.amazonaws.com"
EOF

sam build

# use --guided for the first deployment only.
# SAM cli collects a few parameters and store them in `samconfig.toml`

sam deploy --guided --stack-name QuoteService

QuoteService has no authentication. Is this okay? [y/N]: <-- answer Y here 

Outputs                                                                                                                     
-----------------------------------------------------------------------------------------------------------------------------
Key                 SwiftAPIEndpoint                                                                                        
Description         API Gateway endpoint URL for your application                                                           
Value               https://747ukfmah7.execute-api.us-east-1.amazonaws.com                                                  
-----------------------------------------------------------------------------------------------------------------------------

curl [[ Replace with SWIFTAPIEndpoint value ]]/stocks/AAPL
{
  "change" : -4,
  "changePercent" : -0.030052760210257923,
  "price" : 111,
  "symbol" : "AAPL",
  "timestamp" : "2023-12-13T03:12:35Z",
  "volume" : 63812
}

sam delete