github.com/cloud-foundations/dominator@v0.0.0-20221004181915-6e4fee580046/cmd/hyper-control/removeExcessAddresses.go (about)

     1  package main
     2  
     3  import (
     4  	"fmt"
     5  	"strconv"
     6  
     7  	"github.com/Cloud-Foundations/Dominator/lib/errors"
     8  	"github.com/Cloud-Foundations/Dominator/lib/log"
     9  	"github.com/Cloud-Foundations/Dominator/lib/srpc"
    10  	proto "github.com/Cloud-Foundations/Dominator/proto/hypervisor"
    11  )
    12  
    13  func removeExcessAddressesSubcommand(args []string,
    14  	logger log.DebugLogger) error {
    15  	err := removeExcessAddresses(args[0], logger)
    16  	if err != nil {
    17  		return fmt.Errorf("Error removing excess addresses: %s", err)
    18  	}
    19  	return nil
    20  }
    21  
    22  func removeExcessAddresses(maxAddr string, logger log.DebugLogger) error {
    23  	maxAddresses, err := strconv.ParseUint(maxAddr, 10, 16)
    24  	if err != nil {
    25  		return err
    26  	}
    27  	request := proto.ChangeAddressPoolRequest{
    28  		MaximumFreeAddresses: map[string]uint{"": uint(maxAddresses)}}
    29  	var reply proto.ChangeAddressPoolResponse
    30  	clientName := fmt.Sprintf("%s:%d", *hypervisorHostname, *hypervisorPortNum)
    31  	client, err := srpc.DialHTTP("tcp", clientName, 0)
    32  	if err != nil {
    33  		return err
    34  	}
    35  	defer client.Close()
    36  	err = client.RequestReply("Hypervisor.ChangeAddressPool",
    37  		request, &reply)
    38  	if err != nil {
    39  		return err
    40  	}
    41  	return errors.New(reply.Error)
    42  }