Deprecated in favor of srv-lb, a rewrite with a cleaner interface.
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
}
// uses dns server configured in /etc/resolv.conf
srvName := "my-svc.service.consul"
c := clb.New()
address, err := c.GetAddress(srvName)
if err != nil {
panic(err)
}
fmt.Printf("%s", address.String())
// Output: 0.1.2.3:8001
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
// uses dns server configured in /etc/resolv.conf
ap := NewAddressProvider("my-svc.service.consul")
address, err := ap.GetAddress()
if err != nil {
panic(err)
}
fmt.Printf("%s", address.String())
// Output: 0.1.2.3:8001
tests are run against some fixture dns entries I set up on fligl.io (dig foo.service.fligl.io SRV).
make depsinstall depsmake testrun all tests
This is a fork from the original project https://github.com/benschw/consul-clb-go which 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
demoservice 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/