cmem-plugin-uuid

Create universally unique identifiers (UUIDs) versions 1, 3, 4, 5, 6, 7 and 8 in transformations.

Installation

cmemc -c my-cmem admin workspace python install cmem-plugin-uuid

Development

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UUID1

UUID1 version is generated from a host ID, sequence number, and the current time.

Parameters

Node

Node value in the form "01:23:45:67:89:AB", "01-23-45-67-89-AB", or "0123456789AB". If not given, uuid.getnode() is used to attempt to obtain the hardware address. If this is unsuccessful a random 48-bit number is chosen.

Default value: None
ID: node

Clock sequence

If clock sequence is given, it is used as the sequence number, otherwise a random 14-bit sequence number is chosen.

Default value: None
ID: clock_seq

UUID3

UUID version 3 is a reproducible UUID based on the MD5 hash of a namespace identifier (which is a UUID) and a name (which is a string).

Parameters

Namespace

The namespace can be entered manually or selected from the namespace UUIDs defined in RFC 4122:

• Namespace DNS: 6ba7b810-9dad-11d1-80b4-00c04fd430c8 (namespace_dns)
• Namespace URL: 6ba7b811-9dad-11d1-80b4-00c04fd430c8 (namespace_url)
• Namespace OID: 6ba7b812-9dad-11d1-80b4-00c04fd430c8 (namespace_oid)
• Namespace X500: 6ba7b814-9dad-11d1-80b4-00c04fd430c8 (namespace_x500)

If none of the predefined namespace UUIDs is selected, the input namespace is either directly interpreted as a UUID, or used to derive a UUID (see parameter Namespace as UUID). If no namespace is given, the output is the same as that of the standard CMEM UUID operator with input value.

Default value: none
ID: namespace

Use input as namespace

If enabled, the input value is used for the namespace.

Default value: False
ID: input_as_namespace

Namespace as UUID

Applies only if none of the pre-defined namespaces is selected. If enabled, the namespace string needs to be a valid UUID. Otherwise, the namespace UUID is a UUIDv1 derived from the MD5 hash of the namespace string.

Default value: False
ID: namespace_as_uuid

UUID4

UUID version 4 specifies a random UUID. This plugin is equivalent to the standard CMEM UUID operator without input value.

UUID5

UUID version 5 is a reproducible UUID based on the SHA1 hash of a namespace identifier (which is a UUID) and a name (which is a string).

Parameters

Namespace

The namespace can be entered manually or selected from the namespace UUIDs defined in RFC 4122:

• Namespace DNS: 6ba7b810-9dad-11d1-80b4-00c04fd430c8 (namespace_dns)
• Namespace URL: 6ba7b811-9dad-11d1-80b4-00c04fd430c8 (namespace_url)
• Namespace OID: 6ba7b812-9dad-11d1-80b4-00c04fd430c8 (namespace_oid)
• Namespace X500: 6ba7b814-9dad-11d1-80b4-00c04fd430c8 (namespace_x500)

If none of the predefined namespace UUIDs is selected, the input namespace is either directly interpreted as a UUID, or used to derive a UUID (see parameter Namespace as UUID).

Default value: none
ID: namespace

Namespace as UUID

Applies only if none of the pre-defined namespaces is selected. If enabled, the namespace string needs to be a valid UUID. Otherwise, the namespace UUID is a UUIDv1 derived from the SHA1 hash of the namespace string.

Default value: False
ID: namespace_as_uuid

UUID6

UUID6 version is generated from a host ID, sequence number, and the current time. UUID version 6 is a field-compatible version of UUIDv1, reordered for improved DB locality.

Parameters

Node

Node value in the form "01:23:45:67:89:AB", "01-23-45-67-89-AB", or "0123456789AB". If not given, a random 48-bit sequence number is chosen.

Default value: None
ID: node

Clock sequence

If clock sequence is given, it is used as the sequence number, otherwise a random 14-bit number is chosen.

Default value: None
ID: clock_seq

UUID7

UUID version 7 features a time-ordered value field derived from the widely implemented and well known Unix Epoch timestamp source, the number of milliseconds since midnight 1 Jan 1970 UTC, leap seconds excluded, as well as improved entropy characteristics over versions 1 or 6.

UUID8

UUID version 8 features a time-ordered value field derived from the widely implemented and well known Unix Epoch timestamp source, the number of nanoseconds since midnight 1 Jan 1970 UTC, leap seconds excluded.

UUID1 to UUID6

Generate a UUID version 6 from a UUID version 1. The input needs to be a valid UUIDv1 hexdecimal string.

UUID Version

Outputs the UUID version from a UUID input string.

UUID Convert

Convert a UUID from one format to another. The plugin accepts strings in the correct format, however, the log will show a warning if the input does not comply with the standard specified in RFC 4122 and the proposed updates.

Parameters

From

The input format

Options:

• UUID/32-character hexadecimal string (uuid_hex):

  A standard UUID or a UUID as a 32-character lowercase hexadecimal string.

• 128-bit integer (int):

  The UUID as a 128-bit integer.

• URN (urn):

  The UUID as a URN.

Default value: UUID/32-character lowercase hexadecimal string
ID: from_format

To

The output format

Options:

• UUID (uuid):

  A standard UUID.

• 32-character lowercase hexadecimal string (hex):

  The UUID as a 32-character lowercase hexadecimal string.

• 128-bit integer (int):

  The UUID as a 128-bit integer.

• URN (urn):

  The UUID as a URN as specified in RFC 4122.

Default value: 32-character lowercase hexadecimal string
ID: to_format