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Simplify the code in the RegisterSubnet method of ipallocator.

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This commit is contained in:
junxu 2015-05-07 05:22:52 +00:00
parent ae604975c7
commit 382fe75607
1 changed files with 4 additions and 8 deletions
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12
libnetwork/ipallocator/allocator.go
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@ -70,18 +70,14 @@ func (a *IPAllocator) RegisterSubnet(network *net.IPNet, subnet *net.IPNet) erro
if _, ok := a.allocatedIPs[key]; ok {
return ErrNetworkAlreadyRegistered
}
n := newAllocatedMap(network)
beginIP, endIP := netutils.NetworkRange(subnet)
begin := big.NewInt(0).Add(ipToBigInt(beginIP), big.NewInt(1))
end := big.NewInt(0).Sub(ipToBigInt(endIP), big.NewInt(1))
// Check that subnet is within network
if !(begin.Cmp(n.begin) >= 0 && end.Cmp(n.end) <= 0 && begin.Cmp(end) == -1) {
beginIP, endIP := netutils.NetworkRange(subnet)
if !(network.Contains(beginIP) && network.Contains(endIP)) {
return ErrBadSubnet
}
n.begin.Set(begin)
n.end.Set(end)
n.last.Sub(begin, big.NewInt(1))
n := newAllocatedMap(subnet)
a.allocatedIPs[key] = n
return nil
}