2019-01-12 04:58:27 +00:00
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# Utils
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[![Build Status]](https://travis-ci.org/kubernetes/utils) [](https://godoc.org/k8s.io/utils)
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A set of Go libraries that provide low-level,
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kubernetes-independent packages supplementing the [Go
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standard libs].
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## Purpose
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As Kubernetes grows and spins functionality out of its
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[core] and into cooperating repositories like
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[apiserver], [kubectl], [kubeadm], etc., the need
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arises for leaf repositories to house shared code and
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avoid cycles in repository relationships.
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This repository is intended to hold shared utilities
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with no Kubernetes dependence that may be of interest
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to any Go project. See these [instructions for moving]
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an existing package to this repository.
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## Criteria for adding code here
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- Used by multiple Kubernetes repositories.
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- Full unit test coverage.
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- Go tools compliant (`go get`, `go test`, etc.).
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- Complex enough to be worth vendoring, rather than copying.
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- Stable, or backward compatible, API.
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- _No dependence on any Kubernetes repository_.
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## Libraries
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- [Exec](/exec) provides an interface for `os/exec`. It makes it easier
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to mock and replace in tests, especially with
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the [FakeExec](exec/testing/fake_exec.go) struct.
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- [Temp](/temp) provides an interface to create temporary directories. It also
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provides a [FakeDir](temp/temptest) implementation to replace in tests.
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- [Clock](/clock) provides an interface for time-based operations. It allows
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mocking time for testing.
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- [Pointers](/pointers) provides some functions for pointer-based operations.
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2019-04-07 17:07:55 +00:00
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- [Io](/io) provides interfaces for working with file IO. Currently it provides
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functionality for consistently reading a file.
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- [NSEnter](/nsenter) provies interfaces for executing and interacting with
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processes running within a namespace.
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2019-01-12 04:58:27 +00:00
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[Build Status]: https://travis-ci.org/kubernetes/utils.svg?branch=master
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[Go standard libs]: https://golang.org/pkg/#stdlib
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[api]: https://github.com/kubernetes/api
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[apiserver]: https://github.com/kubernetes/apiserver
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[core]: https://github.com/kubernetes/kubernetes
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[ingress]: https://github.com/kubernetes/ingress
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[kubeadm]: https://github.com/kubernetes/kubeadm
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[kubectl]: https://github.com/kubernetes/kubectl
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[instructions for moving]: ./HOWTOMOVE.md
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## Contributing
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Please see [CONTRIBUTING.md](CONTRIBUTING.md) for instructions on how to contribute.
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