connpool

Documentation

Overview

Package connpool provide short connection and long connection pool.

Index

• func SetReporter(r Reporter)
• type ConnWithPkgSize
  • func (c *ConnWithPkgSize) Close() error
  • func (c *ConnWithPkgSize) Read(b []byte) (n int, err error)
  • func (c *ConnWithPkgSize) Write(b []byte) (n int, err error)
• type ConnectionPoolType
• type DummyPool
  • func (p *DummyPool) Clean(network, address string)
  • func (p *DummyPool) Close() error
  • func (p *DummyPool) Discard(conn net.Conn) error
  • func (p *DummyPool) Get(ctx context.Context, network, address string, opt remote.ConnOption) (net.Conn, error)
  • func (p *DummyPool) Put(conn net.Conn) error
• type DummyReporter
  • func (dcm *DummyReporter) ConnFailed(poolType ConnectionPoolType, serviceName string, addr net.Addr)
  • func (dcm *DummyReporter) ConnSucceed(poolType ConnectionPoolType, serviceName string, addr net.Addr)
  • func (dcm *DummyReporter) ReuseSucceed(poolType ConnectionPoolType, serviceName string, addr net.Addr)
• type LongPool
  • func NewLongPool(serviceName string, idlConfig connpool.IdleConfig) *LongPool
  • func (lp *LongPool) Clean(network, address string)
  • func (lp *LongPool) Close() error
  • func (lp *LongPool) Discard(conn net.Conn) error
  • func (lp *LongPool) Dump() interface{}
  • func (lp *LongPool) EnableReporter()
  • func (lp *LongPool) Evict(frequency time.Duration)
  • func (lp *LongPool) Get(ctx context.Context, network, address string, opt remote.ConnOption) (net.Conn, error)
  • func (lp *LongPool) Put(conn net.Conn) error
  • func (lp *LongPool) WarmUp(eh warmup.ErrorHandling, wuo *warmup.PoolOption, co remote.ConnOption) error
• type PoolDump
• type Reporter
  • func GetCommonReporter() Reporter
• type ShortPool
  • func NewShortPool(serviceName string) *ShortPool
  • func (p *ShortPool) Close() error
  • func (p *ShortPool) Discard(conn net.Conn) error
  • func (p *ShortPool) EnableReporter()
  • func (p *ShortPool) Get(ctx context.Context, network, address string, opt remote.ConnOption) (net.Conn, error)
  • func (p *ShortPool) Put(conn net.Conn) error

Functions

func SetReporter

func SetReporter(r Reporter)

SetReporter set the common reporter of connection pool, that can only be set once.

Types

type ConnWithPkgSize

type ConnWithPkgSize struct {
	net.Conn
	Written int32
	Readn   int32
}

ConnWithPkgSize wraps a connection and records the bytes read or written through it.

func (*ConnWithPkgSize) Close

func (c *ConnWithPkgSize) Close() error

Close implements the net.Conn interface.

func (*ConnWithPkgSize) Read

func (c *ConnWithPkgSize) Read(b []byte) (n int, err error)

Read implements the net.Conn interface.

func (*ConnWithPkgSize) Write

func (c *ConnWithPkgSize) Write(b []byte) (n int, err error)

Write implements the net.Conn interface.

type ConnectionPoolType

type ConnectionPoolType int8

ConnectionPoolType is the type of connection pool.

const (
	Short ConnectionPoolType = iota
	Long
)

Short and Long flags define which indicates type of connection pool..

type DummyPool

type DummyPool struct{}

DummyPool is a dummy implementation of remote.ConnPool.

func (*DummyPool) Clean

func (p *DummyPool) Clean(network, address string)

Clean implements the remote.LongConnPool interface.

func (*DummyPool) Close

func (p *DummyPool) Close() error

Close is to release resource of ConnPool, it is executed when client is closed.

func (*DummyPool) Discard

func (p *DummyPool) Discard(conn net.Conn) error

Discard implements the remote.ConnPool interface.

func (*DummyPool) Get

func (p *DummyPool) Get(ctx context.Context, network, address string, opt remote.ConnOption) (net.Conn, error)

Get implements the remote.ConnPool interface.

func (*DummyPool) Put

func (p *DummyPool) Put(conn net.Conn) error

Put implements the remote.ConnPool interface.

type DummyReporter

type DummyReporter struct{}

DummyReporter is a dummy implementation of Reporter.

func (*DummyReporter) ConnFailed

func (dcm *DummyReporter) ConnFailed(poolType ConnectionPoolType, serviceName string, addr net.Addr)

ConnFailed implements the Reporter interface.

func (*DummyReporter) ConnSucceed

func (dcm *DummyReporter) ConnSucceed(poolType ConnectionPoolType, serviceName string, addr net.Addr)

ConnSucceed implements the Reporter interface.

func (*DummyReporter) ReuseSucceed

func (dcm *DummyReporter) ReuseSucceed(poolType ConnectionPoolType, serviceName string, addr net.Addr)

ReuseSucceed implements the Reporter interface.

type LongPool

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

LongPool manages a pool of long connections.

func NewLongPool

func NewLongPool(serviceName string, idlConfig connpool.IdleConfig) *LongPool

NewLongPool creates a long pool using the given IdleConfig.

func (*LongPool) Clean

func (lp *LongPool) Clean(network, address string)

Clean implements the LongConnPool interface.

func (*LongPool) Close

func (lp *LongPool) Close() error

Close releases all peers in the pool, it is executed when client is closed.

func (*LongPool) Discard

func (lp *LongPool) Discard(conn net.Conn) error

Discard implements the ConnPool interface.

func (*LongPool) Dump

func (lp *LongPool) Dump() interface{}

Dump is used to dump current long pool info when needed, like debug query.

func (*LongPool) EnableReporter

func (lp *LongPool) EnableReporter()

EnableReporter enable reporter for long connection pool.

func (*LongPool) Evict

func (lp *LongPool) Evict(frequency time.Duration)

Evict cleanups the idle connections in peers.

func (*LongPool) Get

func (lp *LongPool) Get(ctx context.Context, network, address string, opt remote.ConnOption) (net.Conn, error)

Get pick or generate a net.Conn and return The context is not used but leave it for now.

func (*LongPool) Put

func (lp *LongPool) Put(conn net.Conn) error

Put implements the ConnPool interface.

func (*LongPool) WarmUp

func (lp *LongPool) WarmUp(eh warmup.ErrorHandling, wuo *warmup.PoolOption, co remote.ConnOption) error

WarmUp implements the warmup.Pool interface.

type PoolDump

type PoolDump struct {
	IdleNum       int         `json:"idle_num"`
	ConnsDeadline []time.Time `json:"conns_deadline"`
}

type Reporter

type Reporter interface {
	ConnSucceed(poolType ConnectionPoolType, serviceName string, addr net.Addr)
	ConnFailed(poolType ConnectionPoolType, serviceName string, addr net.Addr)
	ReuseSucceed(poolType ConnectionPoolType, serviceName string, addr net.Addr)
}

Reporter report status of connection pool.

func GetCommonReporter

func GetCommonReporter() Reporter

GetCommonReporter returns the current Reporter used by connection pools.

type ShortPool

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

ShortPool is the conn pool for short connections.

func NewShortPool

func NewShortPool(serviceName string) *ShortPool

NewShortPool timeout is connection timeout.

func (*ShortPool) Close

func (p *ShortPool) Close() error

Close is to release resource of ConnPool, it is executed when client is closed. ShortPool do nothing

func (*ShortPool) Discard

func (p *ShortPool) Discard(conn net.Conn) error

Discard implements the ConnPool interface.

func (*ShortPool) EnableReporter

func (p *ShortPool) EnableReporter()

EnableReporter enable reporter for short connection pool.

func (*ShortPool) Get

func (p *ShortPool) Get(ctx context.Context, network, address string, opt remote.ConnOption) (net.Conn, error)

Get return a PoolConn instance which implement net.Conn interface.

func (*ShortPool) Put

func (p *ShortPool) Put(conn net.Conn) error

Put implements the ConnPool interface.