github.com/fufuok/balancer@v1.0.0/examples/rr/main.go (about)

     1  package main
     2  
     3  import (
     4  	"fmt"
     5  
     6  	"github.com/fufuok/balancer"
     7  )
     8  
     9  func main() {
    10  	nodes := []string{"A", "B", "C"}
    11  	// lb := balancer.New(balancer.RoundRobin, nodes)
    12  	lb := balancer.NewRoundRobin(nodes)
    13  	fmt.Println("balancer name:", lb.Name())
    14  
    15  	// A B C A B
    16  	for i := 0; i < 5; i++ {
    17  		fmt.Print(lb.Select(), " ")
    18  	}
    19  	fmt.Println()
    20  
    21  	// add an item to be selected
    22  	lb.Add("E")
    23  	// output: C
    24  	fmt.Println(lb.Select())
    25  	// output: E
    26  	fmt.Println(lb.Select())
    27  
    28  	// get all items
    29  	nodes = lb.All().([]string)
    30  	// [A B C E]
    31  	fmt.Printf("%+v\n", nodes)
    32  
    33  	nodes = append(nodes, "F")
    34  	// reinitialize the balancer items
    35  	lb.Update(nodes)
    36  
    37  	// A B C E F A B
    38  	for i := 0; i < 7; i++ {
    39  		fmt.Print(lb.Select(), " ")
    40  	}
    41  	fmt.Println()
    42  
    43  	// reset the balancer
    44  	lb.Reset()
    45  
    46  	// remove an item
    47  	lb.Remove("E")
    48  
    49  	// remove all items
    50  	lb.RemoveAll()
    51  }