Example usage for com.amazonaws.services.ec2.model DescribeRegionsRequest withRegionNames

Introduction

In this page you can find the example usage for com.amazonaws.services.ec2.model DescribeRegionsRequest withRegionNames.

Prototype

public DescribeRegionsRequest withRegionNames(java.util.Collection<String> regionNames) 

Source Link

Document

The names of the Regions.

Usage

From source file:com.netflix.spinnaker.clouddriver.aws.security.DefaultAWSAccountInfoLookup.java

License:Apache License

@Override
public List<AWSRegion> listRegions(Collection<String> regionNames) {
    Set<String> nameSet = new HashSet<>(regionNames);
    AmazonEC2 ec2 = amazonClientProvider.getAmazonEC2(credentialsProvider, AmazonClientProvider.DEFAULT_REGION);

    DescribeRegionsRequest request = new DescribeRegionsRequest();
    if (!nameSet.isEmpty()) {
        request.withRegionNames(regionNames);
    }/*from   w  w  w  .  j  a va 2 s.  c  om*/
    List<Region> regions = ec2.describeRegions(request).getRegions();
    if (regions.size() != nameSet.size()) {
        Set<String> missingSet = new HashSet<>(nameSet);
        for (Region region : regions) {
            missingSet.remove(region.getRegionName());
        }
        throw new IllegalArgumentException(
                "Unknown region" + (missingSet.size() > 1 ? "s: " : ": ") + missingSet);
    }
    List<AWSRegion> awsRegions = new ArrayList<>(regions.size());
    for (Region region : regions) {
        ec2.setEndpoint(region.getEndpoint());
        List<AvailabilityZone> azs = ec2.describeAvailabilityZones().getAvailabilityZones();
        List<String> availabilityZoneNames = new ArrayList<>(azs.size());
        for (AvailabilityZone az : azs) {
            availabilityZoneNames.add(az.getZoneName());
        }

        awsRegions.add(new AWSRegion(region.getRegionName(), availabilityZoneNames));
    }
    return awsRegions;
}

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