Example usage for com.amazonaws.services.autoscaling.model DetachInstancesRequest setAutoScalingGroupName

Introduction

In this page you can find the example usage for com.amazonaws.services.autoscaling.model DetachInstancesRequest setAutoScalingGroupName.

Prototype

public void setAutoScalingGroupName(String autoScalingGroupName) 

Source Link

Document

The name of the Auto Scaling group.

Usage

From source file:com.pinterest.arcee.autoscaling.AwsAutoScaleGroupManager.java

License:Apache License

@Override
public void deleteAutoScalingGroup(String groupName, boolean detachInstances) throws Exception {
    // step 1: get the auto scaling instances information
    if (detachInstances) {
        DescribeAutoScalingGroupsRequest request = new DescribeAutoScalingGroupsRequest();
        request.setAutoScalingGroupNames(Arrays.asList(groupName));
        DescribeAutoScalingGroupsResult result = aasClient.describeAutoScalingGroups(request);
        List<AutoScalingGroup> groups = result.getAutoScalingGroups();
        if (groups.isEmpty()) {
            return;
        }/*from   w w  w . j  ava 2  s.c  om*/
        AutoScalingGroup group = groups.get(0);

        List<Instance> instances = group.getInstances();
        List<String> ids = new LinkedList<>();
        for (Instance instance : instances) {
            ids.add(instance.getInstanceId());
        }

        // step 2: update the autoscaling min size to 0
        UpdateAutoScalingGroupRequest updateAutoScalingGroupRequest = new UpdateAutoScalingGroupRequest();
        updateAutoScalingGroupRequest.setAutoScalingGroupName(groupName);
        updateAutoScalingGroupRequest.setMinSize(0);
        aasClient.updateAutoScalingGroup(updateAutoScalingGroupRequest);

        // step 3: detach instances from auto scaling group
        if (!ids.isEmpty()) {
            for (int i = 0; i < ids.size(); i += MAX_DETACH_INSTANCE_LENGTH) {
                DetachInstancesRequest detachInstancesRequest = new DetachInstancesRequest();
                detachInstancesRequest.setAutoScalingGroupName(groupName);
                detachInstancesRequest.setShouldDecrementDesiredCapacity(true);
                detachInstancesRequest
                        .setInstanceIds(ids.subList(i, Math.min(i + MAX_DETACH_INSTANCE_LENGTH, ids.size())));
                aasClient.detachInstances(detachInstancesRequest);
            }
        }
    }

    // step 4 delete auto scaling group
    DeleteAutoScalingGroupRequest deleteAutoScalingGroupRequest = new DeleteAutoScalingGroupRequest();
    deleteAutoScalingGroupRequest.setAutoScalingGroupName(groupName);
    deleteAutoScalingGroupRequest.setForceDelete(true);
    aasClient.deleteAutoScalingGroup(deleteAutoScalingGroupRequest);
}

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From source file:com.pinterest.arcee.autoscaling.AwsAutoScalingManager.java

License:Apache License

@Override
public void deleteAutoScalingGroup(String groupName, boolean detachInstances) throws Exception {
    // step 1: get the auto scaling instances information
    if (detachInstances) {
        DescribeAutoScalingGroupsRequest request = new DescribeAutoScalingGroupsRequest();
        request.setAutoScalingGroupNames(Arrays.asList(groupName));
        DescribeAutoScalingGroupsResult result = aasClient.describeAutoScalingGroups(request);
        List<AutoScalingGroup> groups = result.getAutoScalingGroups();
        if (groups.isEmpty()) {
            return;
        }/*from  w ww.  j  ava  2s.c  om*/
        AutoScalingGroup group = groups.get(0);
        List<Instance> instances = group.getInstances();
        List<String> ids = new ArrayList<>();
        for (Instance instance : instances) {
            ids.add(instance.getInstanceId());
        }

        // step 2: update the autoscaling min size to 0
        UpdateAutoScalingGroupRequest updateAutoScalingGroupRequest = new UpdateAutoScalingGroupRequest();
        updateAutoScalingGroupRequest.setAutoScalingGroupName(groupName);
        updateAutoScalingGroupRequest.setMinSize(0);
        aasClient.updateAutoScalingGroup(updateAutoScalingGroupRequest);

        // step 3: detach instances from auto scaling group
        if (!ids.isEmpty()) {
            for (int i = 0; i < ids.size(); i += MAX_DETACH_INSTANCE_LENGTH) {
                DetachInstancesRequest detachInstancesRequest = new DetachInstancesRequest();
                detachInstancesRequest.setAutoScalingGroupName(groupName);
                detachInstancesRequest.setShouldDecrementDesiredCapacity(true);
                detachInstancesRequest
                        .setInstanceIds(ids.subList(i, Math.min(i + MAX_DETACH_INSTANCE_LENGTH, ids.size())));
                aasClient.detachInstances(detachInstancesRequest);
            }
        }
    }

    // step 4 delete auto scaling group
    DeleteAutoScalingGroupRequest deleteAutoScalingGroupRequest = new DeleteAutoScalingGroupRequest();
    deleteAutoScalingGroupRequest.setAutoScalingGroupName(groupName);
    deleteAutoScalingGroupRequest.setForceDelete(true);
    aasClient.deleteAutoScalingGroup(deleteAutoScalingGroupRequest);
}

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