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Provide comprehensive usecase output for netutil ex #1417

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Jan 11, 2024
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Provide comprehensive usecase output for netutil ex #1417

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41 changes: 28 additions & 13 deletions src/examples/netutil/netutil.go
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Original file line number Diff line number Diff line change
Expand Up @@ -42,33 +42,48 @@ func runExample(cmd *cobra.Command, args []string) {

///////////////////////////////////////////////////////////////////////////////////////////////////
fmt.Println("\nDivide CIDR block into subnets to accommodate at least minimum number of subnets")
fmt.Println("Divide CIDR block by a specified number of hosts\n")

fmt.Printf("Minimum number of subnets: %d\n", minSubnets)
fmt.Println("[Usecase] Get superneted VPCs and its subnets inside")
fmt.Printf("- Base network: %v\n", cidrBlock)
fmt.Printf("- Minimum number of VPCs (subnets of the base network): %d\n", minSubnets)
fmt.Printf("- Subnets in a VPC base on the number of hosts per subnet: %d\n", hostsPerSubnet)

subnets, err := netutil.SubnettingByMininumSubnetCount(cidrBlock, minSubnets)
if err != nil {
fmt.Println(err)
}

for _, subnet := range subnets {
fmt.Println(subnet)
for i, vpc := range subnets {
fmt.Printf("\nVPC[%03d]:\t%v\nSubnets:\t", i+1, vpc)
vpcsubnets, err := netutil.SubnettingByHosts(vpc, hostsPerSubnet)
if err != nil {
fmt.Println(err)
}
for j, subnet := range vpcsubnets {
fmt.Printf("%v", subnet)
if j < len(vpcsubnets)-1 {
fmt.Print(", ")
}
}
fmt.Println("")
}

///////////////////////////////////////////////////////////////////////////////////////////////////
fmt.Println("\nDivide CIDR block by a specified number of hosts")
fmt.Printf("Number of hosts per subnet: %d\n", hostsPerSubnet)
// fmt.Println("\nDivide CIDR block by a specified number of hosts")
// fmt.Printf("Number of hosts per subnet: %d\n", hostsPerSubnet)

subnets, err = netutil.SubnettingByHosts(cidrBlock, hostsPerSubnet)
if err != nil {
fmt.Println(err)
}
// subnets, err = netutil.SubnettingByHosts(cidrBlock, hostsPerSubnet)
// if err != nil {
// fmt.Println(err)
// }

for _, subnet := range subnets {
fmt.Println(subnet)
}
// for _, subnet := range subnets {
// fmt.Printf("%v, ", subnet)
// }

///////////////////////////////////////////////////////////////////////////////////////////////////
fmt.Println("\nGet Network Address")
fmt.Println("\n\nGet Network Address")
networkAddress, err := netutil.GetNetworkAddr(cidrBlock)
if err != nil {
fmt.Println(err)
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