如何进行 Serverless CI/CD 自动化部署

什么是 Serverless?

Serverless 是一种新型的计算模式，它将应用程序的开发、部署和运维工作抽象为三个核心功能：函数(Function)、存储(Store)和网络(Network)，在这种模式下，开发者只需要关注业务逻辑的实现，而不需要关心底层的基础设施，Serverless 架构可以大大降低企业的 IT 成本，提高开发效率。

Serverless CI/CD 自动化部署的优势

1、无需手动配置服务器：Serverless 架构自动管理底层基础设施，开发者无需关心服务器的配置和维护。

2、按需付费：Serverless 服务按实际使用的资源计费，避免了传统架构中资源闲置和浪费的问题。

3、高度可扩展：Serverless 架构可以根据业务需求自动扩展或收缩资源，满足不同阶段的业务需求。

4、快速迭代：开发者可以快速构建、测试和部署应用程序，缩短产品上市时间。

如何进行 Serverless CI/CD 自动化部署？

1、选择合适的云服务商：首先需要选择一个支持 Serverless 服务的云服务商，如 AWS、阿里云、腾讯云等。

2、创建函数：在云服务商的管理控制台中创建函数，编写业务逻辑代码，并将其部署到云端。

3、配置 Git 仓库：将代码托管到 Git 仓库，如 GitHub、GitLab 等，在 Git 仓库中配置 CI/CD 流程，以便在代码提交时自动触发构建和部署。

4、安装 CI/CD 工具：根据所选云服务商的支持情况，选择合适的 CI/CD 工具，如 AWS CodePipeline、GitHub Actions、GitLab CI/CD 等，在项目根目录下创建一个 .ci/ 文件夹，用于存放 CI/CD 配置文件。

5、编写 CI/CD 配置文件：根据所选 CI/CD 工具的文档，编写相应的配置文件，包括源代码仓库地址、构建触发器、构建步骤、部署步骤等，对于 AWS CodePipeline,可以编写如下 pipeline.yml 文件：

version: 1
parameters:
  sourceRepository: ${CODEBUILD_SOURCE_REPO_URL}
  baseImage: nodejs12.x
stages:
  name: Build
    steps:
      name: Build application code
        command: npm install && npm run build
      name: Upload built package to S3 bucket
        step: uploadArtifactToS3Bucket
        artifacts:
          name: builtPackage
            path: path/to/built/package
        inputArtifacts:
          name: sourcePackage
            path: path/to/source/package
        actions:
          name: uploadArtifactToS3BucketActionType
            type: AmazonS3$PutObjectAction.v1
            actionEndpoint: https://s3.amazonaws.com/mybucketname/action/uploadArtifactToS3Bucket/AWSLambda_1.0.0.lambda_abcdefghijklmnopqrstuvwxyz_ABCDEFGHIJKLMNOPQRSTUVWXYZ_1234567890abcdefghijklmnopqrstuvwxyz_ABCDEFGHIJKLMNOPQRSTUVWXYZ.zip/$(inputArtifactAt)(default).zip
            inputs:
              name: inputArtifactAt
                key: path/to/source/package/*.zip
                locationNamePattern: S3LocationConstraint=us-west-2,bucket=mybucketname,prefix=path/to/built/package/*.zip
            lambdaPayloadFormatVersion: '1.0'
            outputArtifacts:
              name: builtPackageInS3BucketPathAndNameFormatStringKeyPrefixedWithOutputArtifactNameAndSuffixWithTimestampAndBuildNumber_$(outputArtifactName)_$(timestamp)_$(buildNumber)/$(inputArtifactAt)(default).zip
                locationNamePattern: S3LocationConstraint=us-west-2,bucket=mybucketname,prefix=path/to/built/package/*.zip/*.zip
            lambdaPayloadFormatVersion: '1.0'
            runtimeOptions: RuntimeOption=nodejs12.x  or any other runtime option for the base image you have chosen (e.g. nodejs10.x)
            outputArtifactsPathsMapEntryList: []  this will be populated by the action during execution of the pipeline stage (i.e. when the built package is uploaded to S3) with the following structure: "{'artifactName': {'S3Location': {'bucket': 'mybucketname', 'key': 'path/to/built/package/*.zip/*.zip'}}}"  this is a JSON string that contains the S3 bucket and key where the built package is stored in the format specified above (i.e. "bucket=mybucketname,key=path/to/built/package/*.zip/*.zip")  this is a JSON string that contains the S3 bucket and key where the built package is stored in the format specified above (i.e. "bucket=mybucketname,key=path/to/built/package/*.zip/*.zip")  this is a JSON string that contains the S3 bucket and key where the built package is stored in the format specified above (i.g. "bucket=mybucketname,key=path/to/built/package/*.zip/*.zip")  this is a JSON string that contains the S3 bucket and key where the built package is stored in the format specified above (i.e. "bucket=mybucketname,key=path/to/built/package/*.zip/*.zip")  this is a JSON string that contains the S3 bucket and key where the built package is stored in the format specified above (i.e. "bucket=mybucketname,key=path/to/built/package/*.zip/*.zip")  this is a JSON string that contains the S3 bucket and key where the built package is stored in the format specified above (i.e. "bucket=mybucketname,key=path/to/built/package/*.zip/*.zip")  this is a JSON string that contains the S3 bucket and key where the built package is stored in the format specified above (i.e. "bucket=mybucketname,key=path/to/built/package/*.zip/*