AWS get instance name in Java

Question

I am developing an application in Java and I am able to list the instances:

for (Reservation reservation : result.getReservations()) {
    for (Instance instance : reservation.getInstances()) {
        System.out.println("Instance id:"
                + instance.getInstanceId());
    }
}

How do I get the instance name?

Got it. Thanks.Instance.getTags() give list of tags and Tag.value is the instance name. — Viswanath Alikonda
– Viswanath Alikonda, Commented Jan 22, 2017 at 9:48
@shmosel: Can you please post as an answer for Viswanath to accept so that others can find your solution? — David Maple
– David Maple, Commented Jan 22, 2017 at 11:06
@DaveMaple I don't know enough to post a substantive answer. Feel free to post one yourself. — shmosel
– shmosel, Commented Jan 22, 2017 at 11:07

David Maple · Accepted Answer · 2017-01-22 11:20:09Z

7

You can access tags associated with the instance:

for (Reservation reservation : result.getReservations()) {
    for (Instance instance : reservation.getInstances()) {
        System.out.println("Instance id:" + instance.getInstanceId());

        if (instance.getTags() != null) {
            for (Tag tag : instance.getTags()) {
                System.out.println(String.format(
                    "%s: %s", 
                    tag.getKey(), 
                    tag.getValue()
                ));
            }
        }
    }
}

answered Jan 22, 2017 at 11:20

David Maple

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Comments

milosnkb · Accepted Answer · 2020-01-15 13:37:16Z

To get an instance name you need to use something like this:

        for (Reservation reservation : response.getReservations()) {
            for (Instance instance : reservation.getInstances()) {
                Tag tagName = instance.getTags().stream()
                        .filter(o -> o.getKey().equals("Name"))
                        .findFirst()
                        .orElse(new Tag("Name", "name not found"));

                System.out.println("Found instance with ID: " + instance.getInstanceId()
                        + ", NAME: " + tagName.getValue()
                        + ", TYPE: " + instance.getInstanceType()
                );
            }
        }

This way you extract Tag that has key:"Name" and value is what you need.

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