micro/selector/random/random.go

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package random
import (
"math/rand"
"github.com/unistack-org/micro/v3/selector"
)
type random struct{}
func (r *random) Select(routes []string, opts ...selector.SelectOption) (selector.Next, error) {
// we can't select from an empty pool of routes
if len(routes) == 0 {
return nil, selector.ErrNoneAvailable
}
// return the next func
return func() string {
// if there is only one route provided we'll select it
if len(routes) == 1 {
return routes[0]
}
// select a random route from the slice
return routes[rand.Intn(len(routes)-1)]
}, nil
}
func (r *random) Record(addr string, err error) error {
return nil
}
func (r *random) Reset() error {
return nil
}
func (r *random) String() string {
return "random"
}
// NewSelector returns a random selector
func NewSelector(opts ...selector.Option) selector.Selector {
return new(random)
}