pool

package

v0.0.0-...-b3b45a9 Latest Latest Go to latest Published: Jan 20, 2015 License: MIT Imports: 8 Imported by: 0

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Repository

github.com/peterbourgon/srvproxy

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Documentation ¶

Constants ¶

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const (
	// ExpvarKeyGets is the key name for the expvar that captures pool
	// get requests. Pass it to expvar.Get to inspect current statistics.
	ExpvarKeyGets = "srvproxy_pool_gets"
)

Variables ¶

View Source

var (
	// ErrNoHosts indicates a pool is empty.
	ErrNoHosts = errors.New("no hosts available")
)

Functions ¶

This section is empty.

Types ¶

type Factory ¶

type Factory func([]string) Pool

Factory converts a slice of hosts to a Pool.

type Pool ¶

type Pool interface {
	Get() (host string, err error)
	Close()
}

Pool describes anything which can yield hosts for transactions. Pools don't grant exclusive use of hosts.

func Instrument ¶

func Instrument(next Pool) Pool

Instrument records metrics for operations against the wrapped Pool.

func Report ¶

func Report(w io.Writer, next Pool) Pool

Report logs JSON-encoded pool operations for the wrapped pool to the passed io.Writer. If w is nil, Report is a no-op.

func RoundRobin ¶

func RoundRobin(hosts []string) Pool

RoundRobin returns a plain round-robining Pool. Close is a no-op.

func Stream ¶

func Stream(r resolve.Resolver, name string, f Factory) Pool

Stream returns a Pool, created via the Factory, that's continuously updated with hosts resolved from the name.

Source Files ¶

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