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Is there a way to load a file from s3 using the ruby ​​gem aws-s3?

Ok, so I tried two methods, failed

First method using aws-s3 gem

require 'aws/s3'
S3ID = "MYACCESS"
S3KEY = "MYKEY"
include AWS::S3
AWS::S3::Base.establish_connection!(
  :access_key_id     => S3ID,
  :secret_access_key => S3KEY
)

bucket = AWS::S3::Bucket.find("test_bucket")
 => #<AWS::S3::Bucket:0x007fea3e2898c8 @attributes={"xmlns"=>"http://s3.amazonaws.com/doc/2006-03-01/", "name"=>"test_bucket", "prefix"=>nil, "marker"=>nil, "max_keys"=>1000, "is_truncated"=>true}, @object_cache=[#<AWS::S3::S3Object:0x70322020960960 '/test_bucket/00000188110119_1000000731213/'>, #<AWS::S3::S3Object:0x70322020960660 '/test_bucket/00000188110119_1000000731213/10_08-52-08.mp3'>, #<AWS::S3::S3Object:0x703220209

bucket.size
 => 1000 

bucket.objects[0]
 => #<AWS::S3::S3Object:0x70322028046080 '/test_bucket/00000188110119_1000000731213/'> 
bucket.objects[1]
 => #<AWS::S3::S3Object:0x70322028046040 '/test_bucket/00000188110119_1000000731213/10_08-52-08.mp3'> 
bucket.objects[1].key
 => "00000188110119_1000000731213/10_08-52-08.mp3" 

File.open("/Users/matt/local_copy.mp3", "w") do |f|
  f.write(bucket.objects[1])
end

UPDATE

bucket.objects[1]
 => #<AWS::S3::S3Object:0x70322028046040 '/test_bucket/00000188110119_1000000731213/10_08-52-08.mp3'> 
bucket.objects[1].read
 NoMethodError: undefined method `read' for #<AWS::S3::S3Object:0x70322028046040>
bucket.objects[1].class
 => AWS::S3::S3Object

As you can see what I am trying to do is copy the mp3 from the s3 bucket and copy it to my local machine ... any ideas on how to do this

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2 answers


See http://docs.amazonwebservices.com/AWSRubySDK/latest/AWS/S3/S3Object.html

Basically, you have to use the methods read

and write

on S3 objects.



So:

File.open("/Users/matt/local_copy.mp3", "w") do |f|
  f.write(bucket.objects[1].read)
end
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If you are not forced to use the "aws-s3" gem, you can check fog

, which does basically the same things, only is backend agnostic (aws, rackspace, ..), and seems to be more active. An example is shown at the bottom of this page showing what you want to achieve



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