API Gateway

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API Gateway
Common Errors
Works in Lambda, but not in API Gateway
Testing in API Gateway:
Status: 502
Response Body:
{
  "message": "Internal server error"
}
Logs:
Lambda execution failed with status 200 due to customer function error: RequestId: 80572150-944e-40e5-b782-aca7f713289f Process exited before completing request. Lambda request id: 80572150-944e-40e5-b782-aca7f713289f
Solution
Check your lambda function is either:
Make sure you define your handler function async ; or
Use the callback argument in your handler
For example:
export async function webhook(event, context) {
  return {
    statusCode: 200,
  };
}
or
export function webhook(event, context, callback) {
  callback(null, { statusCode: 200 });
}
Using Custom Domains with Cloudflare
1.Open AWS ACM Console (us-east-1)
1.Click "Request a  Certificate"
2.Enter the domains you want to enable
2.Open AWS API Gateway​
1.Select "Custom Domain Names" from the left menu.
2.Click the "Create Custom Domain Name" button.
3.Enter the "Domain Name"
4.Select the ACM Certificate (us-east-1)
5.Click "Base Path Mappings"
1.Set the relevant path and destination
6.Hit "Save"
7.Wait a maximum of 40 minutes
3.Open Cloudflare​
1.Select your domain and open the "DNS" tab
2.Add a CNAME record
1.For "Name":
1.Use "@" if you are targeting the root domain. For example "build.my"
2.Use "www" if you are targetting a subdomain. For example: "www.build.my"
2.For "Domain name":
1.Use the AWS APIGateway Target Domain Name. For example: "d1jdvkqtea2e81.cloudfront.net"
3.For Status:
1.Set to: DNS Only
Test only on https . Testing on http will redirect to https so it looks like nothing is happening.
curl --verbose https://dt.cards/
Pieced from:
​https://stackoverflow.com/questions/36737313/how-to-cname-to-amazon-api-gateway-endpoint​
​http://www.leanx.eu/tutorials/set-up-amazons-api-gateway-custom-domain-with-cloudflare​
​https://medium.com/@bobthomas295/combining-aws-serverless-with-cloudflare-sub-domains-338a1b7b2bd​
​
Notes - Previous
AWS
Cognito
Last modified 2yr ago
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Common Errors
Works in Lambda, but not in API Gateway
Using Custom Domains with Cloudflare