Cloudfront Alternate Domain Names

README.md

@@ -98,6 +98,7 @@ stage: dev                       # (optional) serverless dashboard stage. defaul
 inputs:
   src: ./src                     # (optional) path to the source folder. default is a hello world html file.
   domain: serverless.com         # (optional) domain name. this could also be a subdomain.
+  alternateDomainNames: altDomainA.serverless.com,altDomainB.serverless.com         # (optional) alternate cloudfront domain names, separated by a comma.
   region: us-east-2              # (optional) aws region to deploy to. default is us-east-1.
   bucketName: my-bucket          # (optional) aws bucket name. default is an auto generated name.
   indexDocument: index.html      # (optional) index document for your website. default is index.html.

src/serverless.js

@@ -150,6 +150,10 @@ class Website extends Component {
       outputs.domain = `https://${config.domain}`
     }
 
+    if (config.alternateDomainNames) {
+      outputs.alternateDomainNames = config.alternateDomainNames
+    }
+
     return outputs
   }
 

src/utils.js

@@ -99,6 +99,11 @@ const getConfig = (inputs, state) => {
   config.domainHostedZoneId = config.domain ? state.domainHostedZoneId : null
   config.certificateArn = state.certificateArn
 
+  // for alternate cloudfront CNAME domains
+  config.alternateDomainNames = inputs.alternateDomainNames
+    ? inputs.alternateDomainNames.split(',')
+    : null
+
   // if user input example.com, make sure we also setup www.example.com
   if (config.domain && config.domain === config.nakedDomain) {
     config.domain = `www.${config.domain}`
@@ -598,6 +603,13 @@ const createCloudFrontDistribution = async (clients, config) => {
       distributionConfig.Aliases.Quantity = 2
       distributionConfig.Aliases.Items.push(config.nakedDomain)
     }
+
+    if (Array.isArray(config.alternateDomainNames)) {
+      config.alternateDomainNames.forEach((domain) => {
+        distributionConfig.Aliases.Quantity += 1
+        distributionConfig.Aliases.Items.push(domain)
+      })
+    }
   }
 
   try {
@@ -667,6 +679,13 @@ const updateCloudFrontDistribution = async (clients, config) => {
         params.DistributionConfig.Aliases.Quantity = 2
         params.DistributionConfig.Aliases.Items.push(config.nakedDomain)
       }
+
+      if (Array.isArray(config.alternateDomainNames)) {
+        config.alternateDomainNames.forEach((domain) => {
+          params.DistributionConfig.Aliases.Quantity += 1
+          params.DistributionConfig.Aliases.Items.push(domain)
+        })
+      }
     }
     // 6. then finally update!
     const res = await clients.cf.updateDistribution(params).promise()