ec2.py 文件源码

def get_instance(self, region, instance_id):
        ''' Gets details about a specific instance '''
        if self.eucalyptus:
            conn = boto.connect_euca(self.eucalyptus_host)
            conn.APIVersion = '2010-08-31'
        else:
            conn = ec2.connect_to_region(region)

        # connect_to_region will fail "silently" by returning None if the region name is wrong or not supported
        if conn is None:
            print("region name: %s likely not supported, or AWS is down.  connection to region failed." % region)
            sys.exit(1)

        reservations = conn.get_all_instances([instance_id])
        for reservation in reservations:
            for instance in reservation.instances:
                return instance