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//go:build example
// +build example
/*
* MinIO Go Library for Amazon S3 Compatible Cloud Storage
* Copyright 2020 MinIO, Inc.
*
* 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
*
* http://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 main
import (
"context"
"log"
minio "github.com/minio/minio-go/v7"
"github.com/minio/minio-go/v7/pkg/credentials"
"github.com/minio/minio-go/v7/pkg/encrypt"
)
func main() {
// Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY, my-testfile, my-bucketname and
// my-objectname are dummy values, please replace them with original values.
// Requests are always secure (HTTPS) by default. Set secure=false to enable insecure (HTTP) access.
// This boolean value is the last argument for New().
// New returns an Amazon S3 compatible client object. API compatibility (v2 or v4) is automatically
// determined based on the Endpoint value.
s3Client, err := minio.New("s3.amazonaws.com", &minio.Options{
Creds: credentials.NewStaticV4("YOUR-ACCESSKEYID", "YOUR-SECRETACCESSKEY", ""),
Secure: true,
})
if err != nil {
log.Fatalln(err)
}
// Enable trace.
// s3Client.TraceOn(os.Stderr)
// Prepare source decryption key (here we assume same key to
// decrypt all source objects.)
decKey, _ := encrypt.NewSSEC([]byte{1, 2, 3})
// Source objects to concatenate. We also specify decryption
// key for each
src1 := minio.CopySrcOptions{
Bucket: "bucket1",
Object: "object1",
Encryption: decKey,
MatchETag: "31624deb84149d2f8ef9c385918b653a",
}
src2 := minio.CopySrcOptions{
Bucket: "bucket2",
Object: "object2",
Encryption: decKey,
MatchETag: "f8ef9c385918b653a31624deb84149d2",
}
src3 := minio.CopySrcOptions{
Bucket: "bucket3",
Object: "object3",
Encryption: decKey,
MatchETag: "5918b653a31624deb84149d2f8ef9c38",
}
// Create slice of sources.
srcs := []minio.CopySrcOptions{src1, src2, src3}
// Prepare destination encryption key
encKey, _ := encrypt.NewSSEC([]byte{8, 9, 0})
// Create destination info
dst := minio.CopyDestOptions{
Bucket: "bucket",
Object: "object",
Encryption: encKey,
}
uploadInfo, err := s3Client.ComposeObject(context.Background(), dst, srcs...)
if err != nil {
log.Fatalln(err)
}
log.Println("Composed object successfully:", uploadInfo)
}
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