https://github.com/bradleyjkemp/monkey

Tampering with unexported fields made easy
https://github.com/bradleyjkemp/monkey

go golang monkey-patching

Last synced: 10 months ago
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Tampering with unexported fields made easy

• Host: GitHub
• URL: https://github.com/bradleyjkemp/monkey
• Owner: bradleyjkemp
• License: mit
• Created: 2018-06-26T17:17:41.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2019-11-22T15:40:00.000Z (about 6 years ago)
• Last Synced: 2025-03-24T16:51:53.065Z (10 months ago)
• Topics: go, golang, monkey-patching
• Language: Go
• Homepage:
• Size: 8.79 KB
• Stars: 6
• Watchers: 3
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# monkey [![Build Status](https://travis-ci.org/bradleyjkemp/monkey.svg?branch=master)](https://travis-ci.org/bradleyjkemp/monkey) [![Coverage Status](https://coveralls.io/repos/github/bradleyjkemp/monkey/badge.svg)](https://coveralls.io/github/bradleyjkemp/monkey?branch=master) [![Go Report Card](https://goreportcard.com/badge/github.com/bradleyjkemp/monkey)](https://goreportcard.com/report/github.com/bradleyjkemp/monkey) [![GoDoc](https://godoc.org/github.com/bradleyjkemp/monkey?status.svg)](https://godoc.org/github.com/bradleyjkemp/monkey)

Ever wanted to tamper with the value of an unexported field?

This library lets you create a small patch value which can be applied to modify unexported fields regardless of how deeply nested they are.

## Usage

Say you have a struct like so:

```go

type CoolLibrary struct {

	usefulInternalLogs io.Writer

	...

	...

}

```

But you want access to the internal logs which can't be configured to write to a location of your choice.

You could fork the library and add this feature or just use Monkey to patch this field:

```go

lib := CoolLibraryConstructor()

coolLibraryPatch := struct {

	usefulInternalLogs io.Writer

}{

	os.Stdout

}

monkey.Patch(&lib, &coolLibraryPatch)

```

Now your useful internal logs will be written to os.Stdout!