REST Layer Hystrix storage handler wrapper

This REST Layer resource storage wrapper uses hystrix-go to add circuit breaker support to any REST Layer resource storage handler.

Usage

import "github.com/rs/rest-layer-hystrix"

Wrap existing storage handler with a name that will be used to construct hystrix commands:

s := restrix.Wrap("myResource", mem.NewHandler())

Use this handler with a resource:

index.Bind("foo", foo, s, resource.DefaultConf)

Customize the hystrix commands:

// Configure hystrix commands
hystrix.Configure(map[string]hystrix.CommandConfig{
    "posts.Find": {
        Timeout:               1000,
        MaxConcurrentRequests: 100,
        ErrorPercentThreshold: 25,
    },
    "posts.Insert": {
        Timeout:               1000,
        MaxConcurrentRequests: 50,
        ErrorPercentThreshold: 25,
    },
    ...
})

Start the metrics stream handler:

hystrixStreamHandler := hystrix.NewStreamHandler()
hystrixStreamHandler.Start()
log.Print("Serving Hystrix metrics on http://localhost:8081")
go http.ListenAndServe(net.JoinHostPort("", "8081"), hystrixStreamHandler)