github.com/minio/minio-go/v6@v6.0.57/examples/s3/getobject.go (about)

     1  // +build ignore
     2  
     3  /*
     4   * MinIO Go Library for Amazon S3 Compatible Cloud Storage
     5   * Copyright 2015-2017 MinIO, Inc.
     6   *
     7   * Licensed under the Apache License, Version 2.0 (the "License");
     8   * you may not use this file except in compliance with the License.
     9   * You may obtain a copy of the License at
    10   *
    11   *     http://www.apache.org/licenses/LICENSE-2.0
    12   *
    13   * Unless required by applicable law or agreed to in writing, software
    14   * distributed under the License is distributed on an "AS IS" BASIS,
    15   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    16   * See the License for the specific language governing permissions and
    17   * limitations under the License.
    18   */
    19  
    20  package main
    21  
    22  import (
    23  	"io"
    24  	"log"
    25  	"os"
    26  
    27  	"github.com/minio/minio-go/v6"
    28  )
    29  
    30  func main() {
    31  	// Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY, my-bucketname, my-objectname and
    32  	// my-testfile are dummy values, please replace them with original values.
    33  
    34  	// Requests are always secure (HTTPS) by default. Set secure=false to enable insecure (HTTP) access.
    35  	// This boolean value is the last argument for New().
    36  
    37  	// New returns an Amazon S3 compatible client object. API compatibility (v2 or v4) is automatically
    38  	// determined based on the Endpoint value.
    39  	s3Client, err := minio.New("s3.amazonaws.com", "YOUR-ACCESS-KEY-HERE", "YOUR-SECRET-KEY-HERE", true)
    40  	if err != nil {
    41  		log.Fatalln(err)
    42  	}
    43  
    44  	reader, err := s3Client.GetObject("my-bucketname", "my-objectname", minio.GetObjectOptions{})
    45  	if err != nil {
    46  		log.Fatalln(err)
    47  	}
    48  	defer reader.Close()
    49  
    50  	localFile, err := os.Create("my-testfile")
    51  	if err != nil {
    52  		log.Fatalln(err)
    53  	}
    54  	defer localFile.Close()
    55  
    56  	stat, err := reader.Stat()
    57  	if err != nil {
    58  		log.Fatalln(err)
    59  	}
    60  
    61  	if _, err := io.CopyN(localFile, reader, stat.Size); err != nil {
    62  		log.Fatalln(err)
    63  	}
    64  }