The nova.api.ec2.ec2utils Module

camelcase_to_underscore(str)

dict_from_dotted_str(items)

parse multi dot-separated argument into dict. EBS boot uses multi dot-separated arguments like BlockDeviceMapping.1.DeviceName=snap-id Convert the above into {‘block_device_mapping’: {‘1’: {‘device_name’: snap-id}}}

ec2_id_to_glance_id(context, ec2_id)

ec2_id_to_id(ec2_id)

Convert an ec2 ID (i-[base 16 number]) to an instance id (int).

ec2_inst_id_to_uuid(context, ec2_id)

“Convert an instance id to uuid.

ec2_snap_id_to_uuid(ec2_id)

Get the corresponding UUID for the given ec2-id.

ec2_vol_id_to_uuid(ec2_id)

Get the corresponding UUID for the given ec2-id.

get_instance_uuid_from_int_id(context, reqid)

get_int_id_from_instance_uuid(context, reqid)

get_int_id_from_snapshot_uuid(context, reqid)

get_int_id_from_volume_uuid(context, reqid)

get_ip_info_for_instance(context, instance)

Return a dictionary of IP information for an instance.

get_ip_info_for_instance_from_nw_info(nw_info)

get_snapshot_uuid_from_int_id(context, reqid)

get_volume_uuid_from_int_id(context, reqid)

glance_id_to_ec2_id(context, glance_id, image_type='ami')

glance_id_to_id(context, reqid)

Convert a glance id to an internal (db) id.

id_to_ec2_id(instance_id, template='i-%08x')

Convert an instance ID (int) to an ec2 ID (i-[base 16 number]).

id_to_ec2_inst_id(instance_id)

Get or create an ec2 instance ID (i-[base 16 number]) from uuid.

id_to_ec2_snap_id(snapshot_id)

Get or create an ec2 volume ID (vol-[base 16 number]) from uuid.

id_to_ec2_vol_id(volume_id)

Get or create an ec2 volume ID (vol-[base 16 number]) from uuid.

id_to_glance_id(context, reqid)

Convert an internal (db) id to a glance id.

image_ec2_id(image_id, image_type='ami')

Returns image ec2_id using id and three letter type.

image_type(image_type)

Converts to a three letter image type.

aki, kernel => aki ari, ramdisk => ari anything else => ami

is_ec2_timestamp_expired(request, expires=None)

Checks the timestamp or expiry time included in an EC2 request and returns true if the request is expired

memoize(func)

regex_from_ec2_regex(ec2_re)

Converts an EC2-style regex to a python regex. Approach is based on python fnmatch.

reset_cache()

resource_type_from_id(context, resource_id)

Get resource type by ID

Returns a string representation of the Amazon resource type, if known. Returns None on failure.

Parameters:

• context – context under which the method is called
• resource_id – resource_id to evaluate

search_opts_from_filters(filters)

status_to_ec2_attach_status(volume)

Get the corresponding EC2 attachment state.

According to EC2 API, the valid attachment status in response is: attaching | attached | detaching | detached