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aws-simple

Production-ready AWS website deployment with minimal configuration.

  • 13.0.0
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aws-simple

Production-ready AWS website deployment with minimal configuration.

Installation

npm install aws-simple aws-cdk

Warning: The current version is an entirely new implementation and is currently not yet tested in production. I will remove this warning as soon as I have enough experience with the latest version. Until then, I recommend using the old version for production environments:

npm install aws-simple@10.0.3 aws-cdk

Getting started

The following are the steps to deploy a website using aws-simple and the AWS CDK.

1. Create a config file

Create a config file named aws-simple.config.js, which exports a function that describes a website stack:

// @ts-check

/** @type {import('aws-simple').ConfigFileDefaultExport} */
exports.default = (port) => {
  return {
    hostedZoneName: `example.com`,
    routes: [{type: `file`, publicPath: `/`, path: `dist/index.html`}],
  };
};

The exported function optionally gets a DEV server port argument when called in the context of the aws-simple start [options] CLI command.

2. Create a public hosted zone on AWS Route 53

Create a public hosted zone on AWS Route 53 to make a website available under a particular domain. The required certificate is created automatically by aws-simple during deployment.

3. Create an AWS IAM user

Create an AWS IAM user with programmatic access and an AWS IAM policy with sufficient permissions.

4. Set the credentials

Set the credentials of the AWS IAM user using the two environment variables, AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY. Alternatively, the credentials are retrieved using the AWS profile.

5. Set the AWS region

Set the AWS region using either the environment variable AWS_REGION or AWS_DEFAULT_REGION evaluated in the specified order. Alternatively, the region is retrieved using the AWS profile.

6. Bootstrap the AWS environment

npx cdk bootstrap --app 'npx aws-simple synthesize'

7. Deploy a website to AWS

npx cdk deploy --app 'npx aws-simple synthesize' && npx aws-simple upload

8. Optional: Start the local DEV server

npx aws-simple start

CLI Help

Usage: aws-simple <command> [options]

Commands:
  aws-simple synthesize [options]   Synthesize the configured stack using the CDK.
  aws-simple upload [options]       Upload all referenced files to the S3 bucket of the configured stack.
  aws-simple list [options]         List all deployed stacks filtered by the specified hosted zone name.
  aws-simple delete [options]       Delete the specified stack.
  aws-simple tag [options]          Update the tags of the specified stack.
  aws-simple purge [options]        Delete all expired stacks filtered by the specified hosted zone name.
  aws-simple flush-cache [options]  Flush the REST API cache of the specified stack.
  aws-simple redeploy [options]     Redeploy the REST API of the specified stack.
  aws-simple start [options]        Start a local DEV server.

Options:
      --version  Show version number                                   [boolean]
  -h, --help     Show help                                             [boolean]

Configuration

Alias record name

exports.default = (port) => {
  return {
    hostedZoneName: `example.com`,
    aliasRecordName: `stage`, // <==
    routes: [{type: `file`, publicPath: `/`, path: `dist/index.html`}],
  };
};

An optional alias record name allows multiple website variants to be deployed and operated simultaneously. Example: stage.example.com, test.example.com

Except for the specified hosted zone, the website variants do not share any infrastructure. For the management of multiple website variants, there are the following two CLI commands:

  • aws-simple list [options]
  • aws-simple purge [options]

S3 file routes

exports.default = (port) => {
  return {
    hostedZoneName: `example.com`,
    routes: [
      {
        type: `file`, // <==
        publicPath: `/`,
        path: `dist/index.html`,

        // Optional property:
        responseHeaders: {'cache-control': `max-age=157680000`},
      },
    ],
  };
};

Lambda function routes

exports.default = (port) => {
  return {
    hostedZoneName: `example.com`,
    routes: [
      {
        type: `function`, // <==
        httpMethod: `GET`,
        publicPath: `/hello`,
        path: `dist/hello.js`,
        functionName: `hello`,

        // Optional properties:
        memorySize: 128,
        timeoutInSeconds: 28,
        environment: {FOO: `bar`},
        requestParameters: {foo: {}, bar: {cacheKey: true, required: true}},
      },
    ],
  };
};
// hello.js
exports.handler = async (event) => {
  return {statusCode: 200, body: JSON.stringify({hello: 'world'})};
};

Wildcard file/function routes

exports.default = (port) => {
  return {
    hostedZoneName: `example.com`,
    routes: [
      {
        type: `file`,
        publicPath: `/*`, // <== matches '/', '/foo', '/foo/bar'
        path: `dist/index.html`,
      },
      {
        type: `function`,
        httpMethod: `GET`,
        publicPath: `/hello/*`, // <== matches '/hello', '/hello/world'
        path: `dist/hello.js`,
        functionName: `hello`,
      },
    ],
  };
};

S3 folder routes

exports.default = (port) => {
  return {
    hostedZoneName: `example.com`,
    routes: [
      {
        type: `folder`, // <==
        publicPath: `/*`, // matches '/foo' and '/foo/bar' but not '/'
        path: `dist`,

        // Optional property:
        responseHeaders: {'cache-control': `max-age=157680000`},
      },
    ],
  };
};

Caching

exports.default = (port) => {
  return {
    hostedZoneName: `example.com`,
    cachingEnabled: true, // <==
    routes: [
      {
        type: `file`,
        publicPath: `/`,
        path: `dist/index.html`,
        cacheTtlInSeconds: 300, // <==
      },
      {
        type: `folder`,
        publicPath: `/*`,
        path: `dist`,
        cacheTtlInSeconds: 300, // <==
      },
      {
        type: `function`,
        httpMethod: `GET`,
        publicPath: `/hello`,
        path: `dist/hello.js`,
        functionName: `hello`,
        cacheTtlInSeconds: 300, // <==
      },
    ],
  };
};

Authentication

exports.default = (port) => {
  return {
    hostedZoneName: `example.com`,
    authentication: {
      username: `johndoe`, // <==
      password: `123456`, // <==

      // Optional properties:
      cacheTtlInSeconds: 300,
      realm: `foo`,
    },
    routes: [
      {
        type: `file`,
        publicPath: `/`,
        path: `dist/index.html`,
        authenticationEnabled: true, // <==
      },
      {
        type: `folder`,
        publicPath: `/*`,
        path: `dist`,
        authenticationEnabled: true, // <==
      },
      {
        type: `function`,
        httpMethod: `GET`,
        publicPath: `/hello`,
        path: `dist/hello.js`,
        functionName: `hello`,
        authenticationEnabled: true, // <==
      },
    ],
  };
};

CORS

exports.default = (port) => {
  return {
    hostedZoneName: `example.com`,
    routes: [
      {
        type: `file`,
        publicPath: `/`,
        path: `dist/index.html`,
        corsEnabled: true, // <==
      },
      {
        type: `folder`,
        publicPath: `/*`,
        path: `dist`,
        corsEnabled: true, // <==
      },
      {
        type: `function`,
        httpMethod: `GET`,
        publicPath: `/hello`,
        path: `dist/hello.js`,
        functionName: `hello`,
        corsEnabled: true, // <==
      },
    ],
  };
};
// hello.js
exports.handler = async (event) => {
  return {
    statusCode: 200,
    body: JSON.stringify({hello: 'world'}),
    headers: {
      'access-control-allow-origin': '*', // <==
    },
  };
};

Monitoring

exports.default = (port) => {
  return {
    hostedZoneName: `example.com`,
    monitoring: {
      accessLoggingEnabled: true, // <==
      loggingEnabled: true, // <==
      metricsEnabled: true, // <==
      tracingEnabled: true, // <==
    },
    routes: [{type: `file`, publicPath: `/`, path: `dist/index.html`}],
  };
};

Throttling

// @ts-check

/** @type {import('aws-simple').Throttling} */
const throttling = {rateLimit: 100, burstLimit: 50};

/** @type {import('aws-simple').ConfigFileDefaultExport} */
exports.default = (port) => {
  return {
    hostedZoneName: `example.com`,
    routes: [
      {
        type: `file`,
        publicPath: `/`,
        path: `dist/index.html`,
        throttling, // <==
      },
      {
        type: `folder`,
        publicPath: `/*`,
        path: `dist`,
        throttling, // <==
      },
      {
        type: `function`,
        httpMethod: `GET`,
        publicPath: `/hello`,
        path: `dist/hello.js`,
        functionName: `hello`,
        throttling, // <==
      },
    ],
  };
};

onSynthesize hooks

To implement advanced features, onSynthesize hooks can be used. Below are two examples.

Example: Configure a firewall
const {aws_wafv2} = require(`aws-cdk-lib`);

exports.default = (port) => {
  return {
    hostedZoneName: `example.com`,
    routes: [{type: `file`, publicPath: `/`, path: `dist/index.html`}],

    onSynthesize: ({stack, restApi}) => {
      const myWebAclArn = `...`;

      const webAclAssociation = new aws_wafv2.CfnWebACLAssociation(
        stack,
        `WebACLAssociation`,
        {
          // https://docs.aws.amazon.com/apigateway/latest/developerguide/arn-format-reference.html
          resourceArn: `arn:aws:apigateway:${stack.region}::/restapis/${restApi.restApiId}/stages/prod`,
          webAclArn: myWebAclArn,
        },
      );

      webAclAssociation.node.addDependency(restApi);
    },
  };
};
Example: Allow access to a secret in the AWS Secret Manager
const {aws_iam} = require(`aws-cdk-lib`);

exports.default = (port) => {
  return {
    hostedZoneName: `example.com`,
    routes: [
      {
        type: `function`,
        httpMethod: `GET`,
        publicPath: `/hello`,
        path: `dist/hello.js`,
        functionName: `hello`,

        onSynthesize: ({stack, restApi, lambdaFunction}) => {
          const mySecretId = `...`;

          const secretsManagerPolicyStatement = new aws_iam.PolicyStatement({
            effect: aws_iam.Effect.ALLOW,
            actions: [`secretsmanager:GetSecretValue`],
            resources: [
              `arn:aws:secretsmanager:${stack.region}:${stack.account}:secret:${mySecretId}`,
            ],
          });

          lambdaFunction.addToRolePolicy(secretsManagerPolicyStatement);
        },
      },
    ],
  };
};

AWS IAM Policy Example

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "Bootstrap0",
      "Effect": "Allow",
      "Action": "cloudformation:*",
      "Resource": "arn:aws:cloudformation:*:*:stack/CDKToolkit/*"
    },
    {
      "Sid": "Bootstrap1",
      "Effect": "Allow",
      "Action": "iam:*",
      "Resource": "arn:aws:iam::*:role/cdk-*"
    },
    {
      "Sid": "Bootstrap2",
      "Effect": "Allow",
      "Action": "ssm:*",
      "Resource": "arn:aws:ssm:*:*:parameter/cdk-bootstrap/*"
    },
    {
      "Sid": "Bootstrap3",
      "Effect": "Allow",
      "Action": "ecr:*",
      "Resource": "arn:aws:ecr:*:*:repository/cdk-*"
    },
    {
      "Sid": "Bootstrap4",
      "Effect": "Allow",
      "Action": "s3:*",
      "Resource": "arn:aws:s3:::cdk-*"
    },
    {
      "Sid": "AwsSimple0",
      "Effect": "Allow",
      "Action": "route53:ListHostedZonesByName",
      "Resource": "*"
    },
    {
      "Sid": "AwsSimple1",
      "Effect": "Allow",
      "Action": "cloudformation:*",
      "Resource": "arn:aws:cloudformation:*:*:stack/aws-simple-*"
    },
    {
      "Sid": "AwsSimple2",
      "Effect": "Allow",
      "Action": "s3:*",
      "Resource": "arn:aws:s3:::aws-simple-*"
    },
    {
      "Sid": "AwsSimple3",
      "Effect": "Allow",
      "Action": "apigateway:POST",
      "Resource": "arn:aws:apigateway:*::/restapis/*/deployments"
    },
    {
      "Sid": "AwsSimple4",
      "Effect": "Allow",
      "Action": "apigateway:PATCH",
      "Resource": "arn:aws:apigateway:*::/restapis/*/stages/prod"
    },
    {
      "Sid": "AwsSimple5",
      "Effect": "Allow",
      "Action": "cloudformation:DescribeStacks",
      "Resource": "*"
    },
    {
      "Sid": "AwsSimple6",
      "Effect": "Allow",
      "Action": "apigateway:DELETE",
      "Resource": "arn:aws:apigateway:*::/restapis/*/stages/prod/cache/data"
    }
  ]
}

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Package last updated on 14 Feb 2022

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