// 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))
}
// 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))
}