port_allocator

package

v0.1.0 Latest Latest Go to latest Published: Sep 8, 2016 License: Apache-2.0 Imports: 7 Imported by: 0

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var ErrorPortPoolExhausted = errors.New("port pool exhausted")

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type OverwriteableFile interface {
	io.Reader
	io.Writer
	io.Seeker
	Truncate(size int64) error
}

type Pool struct {
	AcquiredPorts map[int]bool
}

func (p *Pool) MarshalJSON() ([]byte, error)

func (p *Pool) UnmarshalJSON(bytes []byte) error

type PortAllocator struct {
	Tracker    tracker
	Serializer serializer
	Locker     fileLocker
}

func (p *PortAllocator) AllocatePort(handle string, port int) (int, error)

func (p *PortAllocator) ReleaseAllPorts(handle string) error

type Serializer struct{}

func (s *Serializer) DecodeAll(file io.ReadSeeker, outData interface{}) error

func (s *Serializer) EncodeAndOverwrite(file OverwriteableFile, outData interface{}) error

type Tracker struct {
	Logger    lager.Logger
	StartPort int
	Capacity  int
}

func (t *Tracker) AcquireOne(pool *Pool) (int, error)

func (t *Tracker) InRange(port int) bool

func (t *Tracker) ReleaseMany(pool *Pool, toRelease []int) error