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s3.go
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s3.go
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//
// Copyright (C) 2019-2020 Vdaas.org Vald team ( kpango, rinx, kmrmt )
//
// 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 (
"context"
"io"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/s3"
"github.com/vdaas/vald/internal/db/storage/blob"
"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"
)
type client struct {
eg errgroup.Group
session *session.Session
service *s3.S3
bucket string
maxPartSize int64
}
func New(opts ...Option) blob.Bucket {
c := new(client)
for _, opt := range append(defaultOpts, opts...) {
opt(c)
}
c.service = s3.New(c.session)
return c
}
func (c *client) Open(ctx context.Context) (err error) {
return nil
}
func (c *client) Close() error {
return nil
}
func (c *client) Reader(ctx context.Context, key string) (io.ReadCloser, error) {
r := reader.New(
reader.WithService(c.service),
reader.WithBucket(c.bucket),
reader.WithKey(key),
)
return r, r.Open(ctx)
}
func (c *client) Writer(ctx context.Context, key string) (io.WriteCloser, error) {
w := writer.New(
writer.WithErrGroup(c.eg),
writer.WithService(c.service),
writer.WithBucket(c.bucket),
writer.WithKey(key),
writer.WithMaxPartSize(c.maxPartSize),
)
return w, w.Open(ctx)
}