示例#1
0
// NewTxPool creates a new TxPool. It's not operational until it's Open'd.
func NewTxPool(
	name string,
	txStatsPrefix string,
	capacity int,
	timeout time.Duration,
	poolTimeout time.Duration,
	idleTimeout time.Duration,
	enablePublishStats bool,
	qStats *QueryServiceStats) *TxPool {

	txStatsName := ""
	if enablePublishStats {
		txStatsName = txStatsPrefix + "Transactions"
	}

	axp := &TxPool{
		pool:              NewConnPool(name, capacity, idleTimeout, enablePublishStats, qStats),
		activePool:        pools.NewNumbered(),
		lastID:            sync2.AtomicInt64(time.Now().UnixNano()),
		timeout:           sync2.AtomicDuration(timeout),
		poolTimeout:       sync2.AtomicDuration(poolTimeout),
		ticks:             timer.NewTimer(timeout / 10),
		txStats:           stats.NewTimings(txStatsName),
		queryServiceStats: qStats,
	}
	// Careful: pool also exports name+"xxx" vars,
	// but we know it doesn't export Timeout.
	if enablePublishStats {
		stats.Publish(name+"Timeout", stats.DurationFunc(axp.timeout.Get))
		stats.Publish(name+"PoolTimeout", stats.DurationFunc(axp.poolTimeout.Get))
	}
	return axp
}
示例#2
0
文件: tx_pool.go 项目: miffa/vitess
func NewTxPool(name string, capacity int, timeout, poolTimeout, idleTimeout time.Duration) *TxPool {
	axp := &TxPool{
		pool:        dbconnpool.NewConnectionPool(name, capacity, idleTimeout),
		activePool:  pools.NewNumbered(),
		lastId:      sync2.AtomicInt64(time.Now().UnixNano()),
		timeout:     sync2.AtomicDuration(timeout),
		poolTimeout: sync2.AtomicDuration(poolTimeout),
		ticks:       timer.NewTimer(timeout / 10),
		txStats:     stats.NewTimings("Transactions"),
	}
	// Careful: pool also exports name+"xxx" vars,
	// but we know it doesn't export Timeout.
	stats.Publish(name+"Timeout", stats.DurationFunc(axp.timeout.Get))
	stats.Publish(name+"PoolTimeout", stats.DurationFunc(axp.poolTimeout.Get))
	return axp
}
示例#3
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func NewActivePool(queryTimeout, idleTimeout time.Duration) *ActivePool {
	return &ActivePool{
		pool:     pools.NewNumbered(),
		timeout:  sync2.AtomicDuration(queryTimeout),
		connPool: NewConnectionPool(1, idleTimeout),
		ticks:    timer.NewTimer(queryTimeout / 10),
	}
}
示例#4
0
func NewActiveTxPool(timeout time.Duration) *ActiveTxPool {
	return &ActiveTxPool{
		pool:    pools.NewNumbered(),
		lastId:  sync2.AtomicInt64(time.Now().UnixNano()),
		timeout: sync2.AtomicDuration(timeout),
		ticks:   timer.NewTimer(timeout / 10),
		txStats: stats.NewTimings("Transactions"),
	}
}
示例#5
0
func NewActivePool(name string, queryTimeout time.Duration, connKiller *ConnectionKiller) *ActivePool {
	ap := &ActivePool{
		pool:       pools.NewNumbered(),
		timeout:    sync2.AtomicDuration(queryTimeout),
		ticks:      timer.NewTimer(queryTimeout / 10),
		connKiller: connKiller,
	}
	stats.Publish(name+"Size", stats.IntFunc(ap.pool.Size))
	stats.Publish(
		name+"Timeout",
		stats.DurationFunc(func() time.Duration { return ap.timeout.Get() }),
	)
	return ap
}
示例#6
0
func NewActiveTxPool(name string, timeout time.Duration) *ActiveTxPool {
	axp := &ActiveTxPool{
		pool:    pools.NewNumbered(),
		lastId:  sync2.AtomicInt64(time.Now().UnixNano()),
		timeout: sync2.AtomicDuration(timeout),
		ticks:   timer.NewTimer(timeout / 10),
		txStats: stats.NewTimings("Transactions"),
	}
	stats.Publish(name+"Size", stats.IntFunc(axp.pool.Size))
	stats.Publish(
		name+"Timeout",
		stats.DurationFunc(func() time.Duration { return axp.timeout.Get() }),
	)
	return axp
}
示例#7
0
// NewResourcePool creates a new ResourcePool pool.
// capacity is the initial capacity of the pool.
// maxCap is the maximum capacity.
// If a resource is unused beyond idleTimeout, it's discarded.
// An idleTimeout of 0 means that there is no timeout.
func NewResourcePool(factory Factory, capacity, maxCap int, idleTimeout time.Duration) *ResourcePool {
	if capacity <= 0 || maxCap <= 0 || capacity > maxCap {
		panic(errors.New("invalid/out of range capacity"))
	}
	rp := &ResourcePool{
		resources:   make(chan resourceWrapper, maxCap),
		factory:     factory,
		capacity:    sync2.AtomicInt64(capacity),
		idleTimeout: sync2.AtomicDuration(idleTimeout),
	}
	for i := 0; i < capacity; i++ {
		rp.resources <- resourceWrapper{}
	}
	return rp
}