Ruby AWS S3: Copy S3 File to a Different Bucket

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Demonstrates how to copy an S3 file from one bucket to another. The file can also be renamed if desired. (The file already exists in S3 in one bucket, and is copied without downloading/uploading to another S3 bucket.) This example copies from /chilkat.qa/starfish.jpg to /chilkat.ocean/starfishCopy.jpg

Documentation: https://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectCOPY.html

CURL Command

curl -X PUT https://chilkat.ocean.s3.us-west-2.amazonaws.com/starfishCopy.jpg \
    -H "x-amz-copy-source: /chilkat.qa/starfish.jpg"

Ruby Example

require 'chilkat'

rest = Chilkat::CkRest.new()

authAws = Chilkat::CkAuthAws.new()
authAws.put_AccessKey("AWS_ACCESS_KEY")
authAws.put_SecretKey("AWS_SECRET_KEY")
authAws.put_Region("us-west-2")
authAws.put_ServiceName("s3")
rest.SetAuthAws(authAws)

#  URL: https://chilkat.ocean.s3.us-west-2.amazonaws.com/starfishCopy.jpg
bTls = true
port = 443
bAutoReconnect = true
success = rest.Connect("chilkat.ocean.s3.us-west-2.amazonaws.com",port,bTls,bAutoReconnect)
if (success != true)
    print "ConnectFailReason: " + rest.get_ConnectFailReason().to_s() + "\n";
    print rest.lastErrorText() + "\n";
    exit
end

rest.AddHeader("x-amz-copy-source","/chilkat.qa/starfish.jpg")

sbResponseBody = Chilkat::CkStringBuilder.new()
success = rest.FullRequestNoBodySb("PUT","/starfishCopy.jpg",sbResponseBody)
if (success != true)
    print rest.lastErrorText() + "\n";
    exit
end

respStatusCode = rest.get_ResponseStatusCode()
if (respStatusCode >= 400)
    print "Response Status Code = " + respStatusCode.to_s() + "\n";
    print "Response Header:" + "\n";
    print rest.responseHeader() + "\n";
    print "Response Body:" + "\n";
    print sbResponseBody.getAsString() + "\n";
    exit
end

xmlResponse = Chilkat::CkXml.new()
xmlResponse.LoadSb(sbResponseBody,true)

#  See the Online Tool for Generating XML Parse Code

CopyObjectResult_xmlns = xmlResponse.getAttrValue("xmlns")
LastModified = xmlResponse.getChildContent("LastModified")
ETag = xmlResponse.getChildContent("ETag")

Sample XML Response Body

<?xml version="1.0" encoding="UTF-8"?>
<CopyObjectResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
    <LastModified>2018-12-18T15:53:32.000Z</LastModified>
    <ETag>"2e9c59dbf2662367dc97dfdda85da048"</ETag>
</CopyObjectResult>