go-proxy

A simple proxy implementation for the modern day

This project aims to produce a programmable proxy to facilitate Ambassador pattern. Find out more about Ambassador in micro service deployment

go-proxy strives to achieve the following goals

• To be not complicated
• Code is the docuementation
• Exist as a standalone program and a library for proxy
• Interface with discovery backend
• Tunnel your data with TLS connection.
• Be as lean as possible

Import go-proxy as library

go get github.com/jeffjen/go-proxy/proxy

Running go-proxy as a standalone program

• Running with static candidates:

  go-proxy --src :16379 --dst 10.0.3.144:6379
  

• Running with discovery backend:

  go-proxy --src :16379 --srv /srv/redis/debug \
      --dsc http://etcd0:2379 \
      --dsc http://etcd1:2379
  

• Add TLS encryption to your connection

  go-proxy tls-client --src :16379 --dst 10.0.3.144:6379 \
      --tlscertpath s3://devops.example.org/client-cert
  
  go-proxy tls-client --src :16379 --dst 10.0.3.144:6379 \
      --tlscertpath /path/to/client-cert
  

• Setting up TLS proxy server

  go-proxy tls-server --src :6379 --dst 10.0.3.144:6379 \
      --tlscertpath s3://devops.example.org/server-cert
  
  go-proxy tls-server --src :6379 --dst 10.0.3.144:6379 \
      --tlscertpath /path/to/server-cert
  

Behavior

The proxy module does not attempt to perform reconnection to remote endpoint.

The discovery backend chosen is etcd https://github.com/coreos/etcd

Layout for the discovery backend should look like the following:

/srv/redis/debug
/srv/redis/debug/10.0.1.134:6379
/srv/redis/debug/10.0.2.15:6379
/srv/redis/debug/10.0.3.41:6379

When nodes' state in service /srv/redis/debug changes e.g. leaving or joining, the proxy will attempt to obtain a new set of nodes, followed by a reset on established connections.

Proxy behaviors can be divided into two modes: ordered, or round-robin.

In ordered mode:

• the first remote host is attempted
• then second
• until all were tried, the proxy declare connection failed.

In round-robin node

• connections are spread among available candidates.
• no ordered retry

Documentaion

GoDoc available: https://godoc.org/github.com/jeffjen/go-proxy