Automatic region detection by AWS :: Recipe Details

Recipe Name:

Automatic region detection by AWS

Description:

AWS can automatically detect the region from the environment

Level:

marked_information

Language:

java

Tags:

framework specific
AWS
quality

Documentation

When deploying your application to multiple regions, and when running AWS Lambda or Amazon EC2, it might be easier to allow AWS to automatically determine the region for you.

However, keep in mind that if a region is not explicitly set, and AWS is unable to determine it, the client creation will fail.

Before

Region newRegion = Region.US_EAST_1;
Ec2Client ec2 = Ec2Client.builder()
    .region(newRegion)
    .build();

After

Ec2Client ec2 = Ec2Client.create();

Resources

Region Selection

Recipe

id: scw:aws:automatic-region
version: 10
metadata:
  name: Automatic region detection by AWS
  shortDescription: AWS can automatically detect the region from the environment
  level: marked_information
  language: java
  enabled: true
  descriptionFile: descriptions/AutomaticregiondetectionbyAWS.html
  tags: framework specific;AWS;quality
search:
  methodcall:
    name: region
    declaration:
      type: software.amazon.awssdk.awscore.client.builder.AwsClientBuilder
availableFixes:
- name: Consult the AWS documentation page concerning region selection
  actions:
  - goto:
      type: URL
      value: https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/region-selection.html
- name: Allow AWS to detect the region automatically
  actions:
  - rewrite:
      to: '{{{ qualifier }}}'