如何使用aws-s3 gem在存储桶之间复制文件

Question

aws-s3文档说:

  # Copying an object
  S3Object.copy 'headshot.jpg', 'headshot2.jpg', 'photos'

但是我如何heashot.jpg从photos桶中复制到archive桶中

谢谢!

德布

Answer 1

AWS-SDK gem. S3Object#copy_to

Copies data from the current object to another object in S3.
S3 handles the copy so the client does not need to fetch the 
data and upload it again. You can also change the storage 
class and metadata of the object when copying.

它使用copy_object方法内部,因此复制功能允许您复制S3存储桶内或之间的对象,并可选择替换与进程中的对象关联的元数据.

标准方法(下载/上传)

复制方法

代码示例:

require 'aws-sdk'

AWS.config(
  :access_key_id     => '***',
  :secret_access_key => '***',
  :max_retries       => 10
)

file     = 'test_file.rb'
bucket_0 = {:name => 'bucket_from', :endpoint => 's3-eu-west-1.amazonaws.com'}
bucket_1 = {:name => 'bucket_to',   :endpoint => 's3.amazonaws.com'}

s3_interface_from = AWS::S3.new(:s3_endpoint => bucket_0[:endpoint])
bucket_from       = s3_interface_from.buckets[bucket_0[:name]]
bucket_from.objects[file].write(open(file))

s3_interface_to   = AWS::S3.new(:s3_endpoint => bucket_1[:endpoint])
bucket_to         = s3_interface_to.buckets[bucket_1[:name]]
bucket_to.objects[file].copy_from(file, {:bucket => bucket_from})

Answer 2

使用right_awsgem:

# With s3 being an S3 object acquired via S3Interface.new
# Copies key1 from bucket b1 to key1_copy in bucket b2:
s3.copy('b1', 'key1', 'b2', 'key1_copy')

我跑进问题在于,假如你pics/1234/yourfile.jpg的bucket仅仅是pics和key是1234/yourfile.jpg

我从这里得到了答案:如何使用rails应用程序中的s3在存储桶之间复制文件？

Answer 3

对于仍在寻找的人，AWS 有这方面的文档。实际上，使用aws-sdkgem 非常简单：

bucket = Aws::S3::Bucket.new('source-bucket')
object = bucket.object('source-key')

object.copy_to(bucket: 'target-bucket', key: 'target-key')