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Package uuid provides a pure Go implementation of Universally Unique Identifiers
(UUID) variant as defined in RFC-9562. This package supports both the creation
and parsing of UUIDs in different formats.
This package supports the following UUID versions:
Version 1, based on timestamp and MAC address
Version 3, based on MD5 hashing of a named value
Version 4, based on random numbers
Version 5, based on SHA-1 hashing of a named value
Version 6, a k-sortable id based on timestamp, and field-compatible with v1
Version 7, a k-sortable id based on timestamp
Project History
This project was originally forked from the
github.com/satori/go.uuid repository after
it appeared to be no longer maintained, while exhibiting critical
flaws. We have decided to take
over this project to ensure it receives regular maintenance for the benefit of
the larger Go community.
We'd like to thank Maxim Bublis for his hard work on the original iteration of
the package.
License
This source code of this package is released under the MIT License. Please see
the LICENSE for the full
content of the license.
Recommended Package Version
We recommend using v2.0.0+ of this package, as versions prior to 2.0.0 were
created before our fork of the original package and have some known
deficiencies.
Requirements
This package requires Go 1.19 or later
Usage
Here is a quick overview of how to use this package. For more detailed
documentation, please see the GoDoc Page.
package main
import (
"log""github.com/gofrs/uuid/v5"
)
// Create a Version 4 UUID, panicking on error.// Use this form to initialize package-level variables.varu1=uuid.Must(uuid.NewV4())
funcmain() {
// Create a Version 4 UUID.u2, err:=uuid.NewV4()
iferr!=nil {
log.Fatalf("failed to generate UUID: %v", err)
}
log.Printf("generated Version 4 UUID %v", u2)
// Parse a UUID from a string.s:="6ba7b810-9dad-11d1-80b4-00c04fd430c8"u3, err:=uuid.FromString(s)
iferr!=nil {
log.Fatalf("failed to parse UUID %q: %v", s, err)
}
log.Printf("successfully parsed UUID %v", u3)
}