pdf-to-png-using-boto3-aws.py 文件源码

def run(self, **kwargs):
        ec2 = boto.connect_ec2(settings.PDF_AWS_KEY, settings.PDF_AWS_SECRET)
        sqs = boto.connect_sqs(settings.PDF_AWS_KEY, settings.PDF_AWS_SECRET)

        queue = sqs.create_queue(REQUEST_QUEUE)
        num = queue.count()
        launched = 0
        icount = 0

        reservations = ec2.get_all_instances()
        for reservation in reservations:
            for instance in reservation.instances:
                if instance.state == "running" and instance.image_id == AMI_ID:
                    icount += 1
        to_boot = min(num - icount, MAX_INSTANCES)

        if to_boot > 0:
            startup = BOOTSTRAP_SCRIPT % {
                'KEY': settings.PDF_AWS_KEY,
                'SECRET': settings.PDF_AWS_SECRET,
                'RESPONSE_QUEUE': RESPONSE_QUEUE,
                'REQUEST_QUEUE': REQUEST_QUEUE}
            r = ec2.run_instances(
                image_id=AMI_ID,
                min_count=to_boot,
                max_count=to_boot,
                key_name=KEYPAIR,
                security_groups=SECURITY_GROUPS,
                user_data=startup)
            launched = len(r.instances)
        return launched