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22 lines
533 B
Go
22 lines
533 B
Go
package loadbalancer
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import (
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"net/http"
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"sync/atomic"
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)
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type roundRobin struct {
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index atomic.Uint32
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}
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func (*LoadBalancer) newRoundRobin() impl { return &roundRobin{} }
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func (lb *roundRobin) OnAddServer(srv *Server) {}
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func (lb *roundRobin) OnRemoveServer(srv *Server) {}
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func (lb *roundRobin) ServeHTTP(srvs servers, rw http.ResponseWriter, r *http.Request) {
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index := lb.index.Add(1)
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srvs[index%uint32(len(srvs))].handler.ServeHTTP(rw, r)
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if lb.index.Load() >= 2*uint32(len(srvs)) {
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lb.index.Store(0)
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}
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}
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