https://github.com/1602/witness

https://github.com/1602/witness

Last synced: about 1 month ago
JSON representation

• Host: GitHub
• URL: https://github.com/1602/witness
• Owner: 1602
• License: apache-2.0
• Created: 2019-03-25T19:58:01.000Z (over 5 years ago)
• Default Branch: main
• Last Pushed: 2024-03-12T22:19:34.000Z (8 months ago)
• Last Synced: 2024-06-21T00:07:30.826Z (5 months ago)
• Language: Go
• Size: 86.9 KB
• Stars: 0
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
[![Go Report Card](https://goreportcard.com/badge/github.com/1602/witness)](https://goreportcard.com/report/github.com/1602/witness)

[![Build Status](https://travis-ci.org/1602/witness.svg?branch=main)](https://travis-ci.org/1602/witness)

[![Coverage Status](https://img.shields.io/coveralls/github/1602/witness.svg)](https://coveralls.io/github/1602/witness?branch=main)

## Witness

Enables debugging of http requests via UI. It is like chrome devtools for go backend.

## How it works

It uses `httptrace.WithClientTrace` to make a `http.RoundTripper` eavesdropping on http connection. This allows detailed analysis of various http request stages. All information gathered then pushed using EventStream to UI running in browser.

## Usage

The idea is to observe http client you want to debug by calling `witness.DebugClient` with the http client in question. For example, if you "own" a client to make http calls to some API:

```

// init http client with any configuration you need

cl := &http.Client{}

// pass client to witness to wrap its Transport with eavesdropping functionality

// it will also start SSE notification channel

witness.DebugClient(cl)

// then use cl as http client for making request

```

Alternatively, is you are interested in behaviour of some third-party http client, k8s client for example, you could eavesdrop on http client created by k8s go client code.

TODO: make demo of k8s client eavesdropping