def launch()

in EC2/QuickInstanceEC2/qi.py [0:0]

• 29 lines of code
• 10 McCabe index (conditional complexity)

def launch(opts, stack_name):
    prop = get_instance_properties(opts, stack_name)
    region = prop['region']
    print('Launching instance %s... ' % stack_name)
    output = create_stack(stack_name, get_template(prop, stack_name), region)
    if output == 'STACK_ALREADY_EXISTS':
        status = get_stack_state(stack_name, region).stack_status
        if status == 'CREATE_COMPLETE':
            get_instance_detail(get_instance_id(stack_name, region), stack_name, prop['key'], prop['user'], region)
        if sys.version_info[0] < 3:
            prompt = raw_input('Instance \'%s\' already exists. Would you like to terminate it? ' % stack_name)
        else:
            prompt = input('Instance \'%s\' already exists. Would you like to terminate it? ' % stack_name)
        if prompt in ['Y', 'y']:
            delete_stack(stack_name, region)
    elif 'arn:aws:cloudformation' in output:
        while True:
            status = get_stack_state(stack_name, region).stack_status
            if status == 'CREATE_COMPLETE':
                print('\nInstance created successfully.')
                get_instance_detail(get_instance_id(stack_name, region), stack_name, prop['key'], prop['user'], region)
                break
            elif status == 'CREATE_FAILED' or 'ROLLBACK' in status:
                print('\nFailed to create instance \'%s\'.' % stack_name)
                get_stack_events(stack_name, region)
                break
            sys.stdout.write('.')
            sys.stdout.flush()
            sleep(5)