Example #1
0
func (pq *PQueue) tsParamFunc(params []string, f func(int64) int64) iface.IResponse {
	var err *common.ErrorResponse
	var ts int64 = -1
	for len(params) > 0 {
		switch params[0] {
		case PRM_TIMESTAMP:
			params, ts, err = common.ParseInt64Params(params, 0, math.MaxInt64)
		default:
			return makeUnknownParamResponse(params[0])
		}
		if err != nil {
			return err
		}
	}
	if ts < 0 {
		return common.ERR_TS_PARAMETER_NEEDED
	}

	var result int64 = 0
	pq.lock.Lock()
	for {
		value := f(ts)
		if value == 0 {
			break
		}
		result += value
	}
	pq.lock.Unlock()

	return common.NewIntResponse(result)
}
Example #2
0
// Push message to the queue.
// Pushing message automatically enables auto expiration.
func (pq *PQueue) Push(params []string) iface.IResponse {
	var err *common.ErrorResponse
	var msgId string
	var priority int64 = pq.config.MaxPriority - 1
	var payload string = ""

	for len(params) > 0 {
		switch params[0] {
		case PRM_ID:
			params, msgId, err = common.ParseStringParam(params, 1, 128)
		case PRM_PRIORITY:
			params, priority, err = common.ParseInt64Params(params, 0, pq.config.MaxPriority-1)
		case PRM_PAYLOAD:
			params, payload, err = common.ParseStringParam(params, 1, 512*1024)
		default:
			return makeUnknownParamResponse(params[0])
		}
		if err != nil {
			return err
		}
	}
	if len(msgId) == 0 {
		msgId = common.GenRandMsgId()
	}

	pq.config.LastPushTs = common.Uts()

	pq.lock.Lock()
	defer pq.lock.Unlock()
	pq.msgSerialNumber += 1
	msg := NewPQMessage(msgId, priority, pq.msgSerialNumber)
	return pq.storeMessage(msg, payload)
}
Example #3
0
// Pop first available messages.
// Will return nil if there are no messages available.
func (pq *PQueue) Pop(params []string) iface.IResponse {
	var err *common.ErrorResponse
	var limit int64 = 1
	lockTimeout := pq.config.PopLockTimeout

	for len(params) > 0 {
		p := params[0]
		switch p {
		case PRM_LOCK_TIMEOUT:
			params, lockTimeout, err = common.ParseInt64Params(params, 0, pq.config.PopLockTimeout)
		case PRM_LIMIT:
			params, limit, err = common.ParseInt64Params(params, 1, conf.CFG.PQueueConfig.MaxPopBatchSize)
		default:
			return makeUnknownParamResponse(params[0])
		}
		if err != nil {
			return err
		}
	}
	return common.NewItemsResponse(pq.popMessages(lockTimeout, limit))
}
Example #4
0
// PopWait pops up to specified number of messages, if there are no available messages.
// It will wait until either new message is pushed or wait time exceeded.
func (pq *PQueue) PopWait(params []string) iface.IResponse {
	var err *common.ErrorResponse
	var limit int64 = 1
	var popWaitTimeout int64 = 1000
	var lockTimeout int64 = pq.config.PopLockTimeout

	for len(params) > 0 {
		switch params[0] {
		case PRM_LOCK_TIMEOUT:
			params, lockTimeout, err = common.ParseInt64Params(params, 0, 24*1000*3600)
		case PRM_LIMIT:
			params, limit, err = common.ParseInt64Params(params, 1, conf.CFG.PQueueConfig.MaxPopBatchSize)
		case PRM_POP_WAIT_TIMEOUT:
			params, popWaitTimeout, err = common.ParseInt64Params(params, 1, conf.CFG.PQueueConfig.MaxPopWaitTimeout)
		default:
			return makeUnknownParamResponse(params[0])
		}
		if err != nil {
			return err
		}
	}

	return common.NewItemsResponse(pq.popWaitItems(lockTimeout, popWaitTimeout, limit))
}
Example #5
0
// Set a user defined message lock timeout. Only locked message timeout can be set.
func (pq *PQueue) SetLockTimeout(params []string) iface.IResponse {
	var err *common.ErrorResponse
	var msgId string
	var lockTimeout int64 = -1

	for len(params) > 0 {
		switch params[0] {
		case PRM_ID:
			params, msgId, err = common.ParseStringParam(params, 1, 128)
		case PRM_LOCK_TIMEOUT:
			params, lockTimeout, err = common.ParseInt64Params(params, 0, 24*1000*3600)
		default:
			return makeUnknownParamResponse(params[0])
		}
		if err != nil {
			return err
		}
	}

	if len(msgId) == 0 {
		return common.ERR_MSG_ID_NOT_DEFINED
	}

	if lockTimeout < 0 {
		return common.ERR_MSG_TIMEOUT_NOT_DEFINED
	}

	pq.lock.Lock()
	defer pq.lock.Unlock()

	msg, err := pq.unflightMessage(msgId)
	if err != nil {
		return err
	}

	msg.UnlockTs = common.Uts() + int64(lockTimeout)

	pq.inFlightHeap.PushItem(msgId, msg.UnlockTs)
	pq.database.StoreItem(pq.serviceId, msg)

	return common.OK_RESPONSE
}