benschw / consul-clb-go

Client side load balancer for Consul DNS SRV records

Consul Client Load Balancer for Go Demo

• download demo service here: https://github.com/benschw/consul-clb-go/releases/tag/v0.1.0
• blog post outlining the demo: http://txt.fliglio.com/2014/05/encapsulated-services-with-consul-and-confd/

Selects a SRV record answer according to specified load balancer algorithm, then resolves its A record to an ip, and returns an Address structure:

type Address struct {
	Address string
	Port    uint16
}

Notes for Consul / Confd Cluster Demo

Version 0.1.0 contains the demo service used in my blog post outlining how to use Consul for service discovery and configuration management while using Confd and DNS to keep your applications decoupled from the specifics of Consul.

• download demo service here: https://github.com/benschw/consul-clb-go/releases/tag/v0.1.0
• blog post outlining the demo: http://txt.fliglio.com/2014/05/encapsulated-services-with-consul-and-confd/

Example:

srvName := "my-svc.service.consul"
c := clb.NewClb("127.0.0.1", "8600", clb.RoundRobin)
address, err := c.GetAddress(srvName)
if err != nil {
	panic(err)
}

fmt.Printf("%s", address.String())
// Output: 0.1.2.3:8001

Development

tests are run against some fixture dns entries I set up on fliglio.com (dig foo.service.fliglio.com SRV).

• make deps install deps
• make test run all tests