etcd

package
v0.17.0 Latest Latest
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 Go to latest Published: May 12, 2015 License: Apache-2.0 Imports: 10 Imported by: 0

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type Etcd 

type Etcd struct {
	// contains filtered or unexported fields
}

Etcd exposes a service.Allocator that is backed by etcd. TODO: allow multiple allocations to be tried at once TODO: subdivide the keyspace to reduce conflicts TODO: investigate issuing a CAS without reading first

func NewEtcd 

func NewEtcd(alloc ipallocator.Snapshottable, helper tools.EtcdHelper) *Etcd

NewEtcd returns a service PortalIP ipallocator that is backed by Etcd and can manage persisting the snapshot state of allocation after each allocation is made.

func (*Etcd) Allocate 

func (e *Etcd) Allocate(ip net.IP) error

Allocate attempts to allocate the IP locally and then in etcd.

func (*Etcd) AllocateNext 

func (e *Etcd) AllocateNext() (net.IP, error)

AllocateNext attempts to allocate the next IP locally and then in etcd.

func (*Etcd) CreateOrUpdate 

func (e *Etcd) CreateOrUpdate(snapshot *api.RangeAllocation) error

CreateOrUpdate attempts to update the current etcd state with the provided allocation.

func (*Etcd) Get 

func (e *Etcd) Get() (*api.RangeAllocation, error)

Get returns an api.RangeAllocation that represents the current state in etcd. If the key does not exist, the object will have an empty ResourceVersion.

func (*Etcd) Refresh 

func (e *Etcd) Refresh() error

Refresh reloads the ipallocator from etcd.

func (*Etcd) Release 

func (e *Etcd) Release(ip net.IP) error

Release attempts to release the provided IP locally and then in etcd.

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