/
option.go
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/
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 s3
import (
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/s3/s3manager"
"github.com/vdaas/vald/internal/backoff"
"github.com/vdaas/vald/internal/db/storage/blob/s3/reader"
"github.com/vdaas/vald/internal/db/storage/blob/s3/writer"
"github.com/vdaas/vald/internal/errgroup"
"github.com/vdaas/vald/internal/unit"
)
// Option represents the functional option for client.
type Option func(c *client) error
var defaultOptions = []Option{
WithErrGroup(errgroup.Get()),
}
// WithErrGroup returns the option to set the eg.
func WithErrGroup(eg errgroup.Group) Option {
return func(c *client) error {
if eg != nil {
c.eg = eg
}
return nil
}
}
// WithSession returns the option to set the session.
func WithSession(sess *session.Session) Option {
return func(c *client) error {
if sess != nil {
c.session = sess
}
return nil
}
}
// WithBucket returns the option to set bucket.
func WithBucket(bucket string) Option {
return func(c *client) error {
if len(bucket) != 0 {
c.bucket = bucket
}
return nil
}
}
// WithReader returns the option to set the reader.
func WithReader(r reader.Reader) Option {
return func(c *client) error {
if r != nil {
c.reader = r
}
return nil
}
}
// WithWriter returns the option to set the reader.
func WithWriter(w writer.Writer) Option {
return func(c *client) error {
if w != nil {
c.writer = w
}
return nil
}
}
// WithMaxPartSize returns the option to set maxPartSize.
// The value is set when the value exceeds the s3manager.MinUploadPartSize(1024 * 1024 * 5).
func WithMaxPartSize(size string) Option {
return func(c *client) error {
b, err := unit.ParseBytes(size)
if err != nil {
return err
}
if int64(b) >= s3manager.MinUploadPartSize {
c.maxPartSize = int64(b)
}
return nil
}
}
// WithMaxChunkSize returns the option to set maxChunkSize.
// The value is set when the value exceeds the s3manager.MinUploadPartSize(1024 * 1024 * 5).
func WithMaxChunkSize(size string) Option {
return func(c *client) error {
b, err := unit.ParseBytes(size)
if err != nil {
return err
}
if int64(b) >= s3manager.MinUploadPartSize {
c.maxChunkSize = int64(b)
}
return nil
}
}
// WithReaderBackoff returns the option to set readerBackoffEnabled.
func WithReaderBackoff(enabled bool) Option {
return func(c *client) error {
c.readerBackoffEnabled = enabled
return nil
}
}
// WithReaderBackoffOpts returns the option to set readerBackoffOpts.
func WithReaderBackoffOpts(opts ...backoff.Option) Option {
return func(c *client) error {
if opts == nil {
return nil
}
if c.readerBackoffOpts != nil {
c.readerBackoffOpts = append(c.readerBackoffOpts, opts...)
return nil
}
c.readerBackoffOpts = opts
return nil
}
}