Example usage for com.amazonaws.services.ec2 AmazonEC2 describeClassicLinkInstances

Introduction

In this page you can find the example usage for com.amazonaws.services.ec2 AmazonEC2 describeClassicLinkInstances.

Prototype

DescribeClassicLinkInstancesResult describeClassicLinkInstances(
        DescribeClassicLinkInstancesRequest describeClassicLinkInstancesRequest);

Source Link

Document

Describes one or more of your linked EC2-Classic instances.

Usage

From source file:com.netflix.spinnaker.clouddriver.aws.agent.ReconcileClassicLinkSecurityGroupsAgent.java

License:Apache License

@Override
public void run() {
    if (!deployDefaults.isReconcileClassicLinkAccount(account)) {
        return;/*from   w w w . jav  a  2s.  c om*/
    }
    log.info("Checking classic link security groups in {}/{}", account.getName(), region);
    AmazonEC2 ec2 = amazonClientProvider.getAmazonEC2(account, region, true);
    List<String> classicLinkVpcIds = ec2.describeVpcClassicLink().getVpcs().stream()
            .filter(VpcClassicLink::getClassicLinkEnabled).map(VpcClassicLink::getVpcId)
            .collect(Collectors.toList());
    if (classicLinkVpcIds.size() > 1) {
        log.warn("Multiple classicLinkVpcs found: {}", classicLinkVpcIds);
        throw new IllegalStateException("More than 1 classicLinkVpc found: " + classicLinkVpcIds);
    }

    if (classicLinkVpcIds.isEmpty()) {
        return;
    }
    String classicLinkVpcId = classicLinkVpcIds.get(0);

    RateLimiter apiRequestRateLimit = RateLimiter.create(5);
    final Map<String, ClassicLinkInstance> classicLinkInstances = new HashMap<>();
    DescribeInstancesRequest describeInstances = new DescribeInstancesRequest().withMaxResults(500);
    while (true) {
        apiRequestRateLimit.acquire();
        DescribeInstancesResult instanceResult = ec2.describeInstances(describeInstances);
        instanceResult.getReservations().stream().flatMap(r -> r.getInstances().stream())
                .filter(i -> i.getVpcId() == null)
                .filter(i -> Optional
                        .ofNullable(i.getState()).filter(is -> is.getCode() == RUNNING_STATE).isPresent())
                .filter(this::isInstanceOldEnough)
                .map(i -> new ClassicLinkInstance().withInstanceId(i.getInstanceId())
                        .withVpcId(classicLinkVpcId).withTags(i.getTags()))
                .forEach(cli -> classicLinkInstances.put(cli.getInstanceId(), cli));

        if (instanceResult.getNextToken() == null) {
            break;
        }
        describeInstances.setNextToken(instanceResult.getNextToken());
    }

    DescribeClassicLinkInstancesRequest request = new DescribeClassicLinkInstancesRequest()
            .withMaxResults(1000);
    while (true) {
        apiRequestRateLimit.acquire();
        DescribeClassicLinkInstancesResult result = ec2.describeClassicLinkInstances(request);
        result.getInstances().forEach(i -> classicLinkInstances.put(i.getInstanceId(), i));
        if (result.getNextToken() == null) {
            break;
        }
        request.setNextToken(result.getNextToken());
    }

    log.info("{} existing classic instances in {}/{}", classicLinkInstances.size(), account.getName(), region);

    Map<String, String> groupNamesToIds = ec2
            .describeSecurityGroups(new DescribeSecurityGroupsRequest()
                    .withFilters(new Filter("vpc-id").withValues(classicLinkVpcId)))
            .getSecurityGroups().stream()
            .collect(Collectors.toMap(SecurityGroup::getGroupName, SecurityGroup::getGroupId));

    reconcileInstances(ec2, groupNamesToIds, classicLinkInstances.values());
}

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