33 lines
586 B
Go
33 lines
586 B
Go
package lb
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import (
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"math/rand"
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"github.com/go-kit/kit/endpoint"
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"github.com/go-kit/kit/sd"
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)
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// NewRandom returns a load balancer that selects services randomly.
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func NewRandom(s sd.Subscriber, seed int64) Balancer {
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return &random{
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s: s,
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r: rand.New(rand.NewSource(seed)),
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}
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}
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type random struct {
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s sd.Subscriber
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r *rand.Rand
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}
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func (r *random) Endpoint() (endpoint.Endpoint, error) {
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endpoints, err := r.s.Endpoints()
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if err != nil {
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return nil, err
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}
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if len(endpoints) <= 0 {
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return nil, ErrNoEndpoints
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}
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return endpoints[r.r.Intn(len(endpoints))], nil
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}
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