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queue_option.go
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queue_option.go
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//
// Copyright (C) 2019-2021 vdaas.org vald team <vald@vdaas.org>
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Package worker provides worker processes
package worker
import (
"github.com/vdaas/vald/internal/errgroup"
"github.com/vdaas/vald/internal/timeutil"
)
// QueueOption represents the functional option for queue.
type QueueOption func(q *queue) error
var defaultQueueOpts = []QueueOption{
WithQueueBuffer(10),
WithQueueErrGroup(errgroup.Get()),
WithQueueCheckDuration("200ms"),
}
// WithQueueBuffer returns the option to set the buffer for queue.
func WithQueueBuffer(buffer int) QueueOption {
return func(q *queue) error {
if buffer > 0 {
q.buffer = buffer
}
return nil
}
}
// WithQueueErrGroup returns the options to set the eg for queue.
func WithQueueErrGroup(eg errgroup.Group) QueueOption {
return func(q *queue) error {
if eg != nil {
q.eg = eg
}
return nil
}
}
// WithQueueCheckDuration returns the option to set the qcdur for queue.
// If dur is invalid string, it returns errror.
func WithQueueCheckDuration(dur string) QueueOption {
return func(q *queue) error {
if len(dur) == 0 {
return nil
}
d, err := timeutil.Parse(dur)
if err != nil {
return err
}
q.qcdur = d
return nil
}
}