def scale_up_with_new_instance(config):
"""Scale up with a new instance that first gets configured"""
logger = logging.getLogger(__name__)
logger.info("Upscaling with the new instance started.")
# Launch instance
logger.info("Launching an instance.")
instance, _ = aws_ec2.launch_instance()
# Start app
logger.info("Performing deployment operations.")
aws_ec2.app_predeployment(config)
aws_ec2.deploy_app_at_instance(config, instance)
aws_ec2.app_postdeployment(config)
# Register instance at load balancer
logger.info("Registering an instance at the load balancer")
elb = aws_ec2_elb.get_load_balancer(config.get("region"), config.get("elb_name"))
elb.register_instances([instance.id])
# Update config
instances = config.get_list("instances")
instances.append(instance.id)
config.set_list("instances", instances)
def deploy_app_at_environment(config):
"""Deploy an app to the environment"""
logger = logging.getLogger(__name__)
aws_ec2.app_predeployment(config)
#Transfer the archives to the instances
instances = aws_ec2.get_running_instances(config)
threads = list()
for instance in instances:
threads.append(threading.Thread(target=aws_ec2.deploy_app_at_instance, args=(config,instance)))
[t.start() for t in threads]
[t.join() for t in threads]
aws_ec2.app_postdeployment(config)
output = 'Deployment completed for %d instance(s). App may still be inaccessible for a couple of minutes' % len(instances)
logger.info(output)
print output
