cidrset

package
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Published: Sep 28, 2017 License: Apache-2.0 Imports: 6 Imported by: 0

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Index

Constants

This section is empty.

Variables

View Source
var (
	// ErrCIDRRangeNoCIDRsRemaining occurs when there are no more space
	// to allocate CIDR ranges.
	ErrCIDRRangeNoCIDRsRemaining = errors.New(
		"CIDR allocation failed; there are no remaining CIDRs left to allocate in the accepted range")
)

Functions

This section is empty.

Types

type CidrSet

type CidrSet struct {
	sync.Mutex
	// contains filtered or unexported fields
}

CidrSet manages a set of CIDR ranges from which blocks of IPs can be allocated from.

func NewCIDRSet

func NewCIDRSet(clusterCIDR *net.IPNet, subNetMaskSize int) *CidrSet

NewCIDRSet creates a new CidrSet.

func (*CidrSet) AllocateNext

func (s *CidrSet) AllocateNext() (*net.IPNet, error)

AllocateNext allocates the next free CIDR range. This will set the range as occupied and return the allocated range.

func (*CidrSet) Occupy

func (s *CidrSet) Occupy(cidr *net.IPNet) (err error)

Occupy marks the given CIDR range as used. Occupy does not check if the CIDR range was previously used.

func (*CidrSet) Release

func (s *CidrSet) Release(cidr *net.IPNet) error

Release releases the given CIDR range.

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