Example usage for com.amazonaws.services.cloudformation AmazonCloudFormationAsyncClient deleteStack

Introduction

In this page you can find the example usage for com.amazonaws.services.cloudformation AmazonCloudFormationAsyncClient deleteStack.

Prototype

DeleteStackResult deleteStack(DeleteStackRequest deleteStackRequest);

Source Link

Document

Deletes a specified stack.

Usage

From source file:com.mweagle.tereus.aws.CloudFormation.java

License:Open Source License

protected Optional<DescribeStacksResult> waitForStackComplete(final AmazonCloudFormationAsyncClient awsClient,
        final String stackName, List<StackEvent> priorEvents, Logger logger) throws Exception {
    Map<String, StackEvent> eventHistory = new HashMap<>();
    for (StackEvent eachEvent : priorEvents) {
        eventHistory.put(eachEvent.getEventId(), eachEvent);
    }/*from   ww  w  .j  a  v a  2  s.co m*/
    Optional<StackEvent> terminationEvent = Optional.empty();

    final Predicate<StackEvent> isNewEvent = event -> {
        return !eventHistory.containsKey(event.getEventId());
    };

    final Predicate<StackEvent> isTerminalEvent = stackEvent -> {
        return (CloudFormation.TERMINAL_EVENTS.contains(stackEvent.getResourceStatus())
                && stackEvent.getResourceType().equals("AWS::CloudFormation::Stack"));
    };

    // Query for events
    final DescribeStackEventsRequest describeRequest = new DescribeStackEventsRequest();
    describeRequest.setStackName(stackName);
    while (!terminationEvent.isPresent()) {
        logger.debug("Waiting for StackEvents");
        Thread.sleep(20 * 1000);

        final List<StackEvent> events = getStackEvents(awsClient, stackName, logger);

        // Get all the events we haven't seen, log and mark them
        events.stream().filter(isNewEvent).forEach(item -> {
            logger.info(item.toString());
            eventHistory.put(item.getEventId(), item);
        });

        // Find the first terminal event
        terminationEvent = events.stream().filter(isTerminalEvent).findFirst();
    }

    // Don't ever delete anything, unless the initial event set length was empty, implying
    // a creation event
    if (priorEvents.size() <= 0 && terminationEvent.get().getResourceStatus().contains("_FAILED")) {
        logger.warn("Stack creation . Deleting stack.");
        final DeleteStackRequest deleteStackRequest = new DeleteStackRequest();
        deleteStackRequest.setStackName(stackName);
        awsClient.deleteStack(deleteStackRequest);
        return Optional.empty();
    } else {
        // Looks good, let's get the final output for the stack...
        return describeStack(awsClient, stackName, logger);
    }
}

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