Ruby Google Cloud Storage: Copy File (Object) to another Bucket

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Copies a fie (also known as an object) to another Google Cloud Storage bucket. This example copies the file "starfish.jpg" from the "chilkat-test" bucket to the "chilkat-images" bucket. In Google Cloud Storage, moving a file to a new bucket is a 2-step operation: First copy the file, then delete the original.

Documentation: https://cloud.google.com/storage/docs/renaming-copying-moving-objects

CURL Command

curl -X POST https://www.googleapis.com/storage/v1/b/chilkat-bucket/o/starfish.jpg/rewriteTo/b/chilkat-images/o/starfish.jpg?project=MY_CLOUD_STORAGE_PROJECT \
    --header "Authorization: Bearer CLOUD_STORAGE_TOKEN"

Ruby Example

require 'chilkat'

rest = Chilkat::CkRest.new()

#  URL: https://www.googleapis.com/storage/v1/b/chilkat-bucket/o/starfish.jpg/rewriteTo/b/chilkat-images/o/starfish.jpg?project=MY_CLOUD_STORAGE_PROJECT
bTls = true
port = 443
bAutoReconnect = true
success = rest.Connect("www.googleapis.com",port,bTls,bAutoReconnect)
if (success != true)
    print "ConnectFailReason: " + rest.get_ConnectFailReason().to_s() + "\n";
    print rest.lastErrorText() + "\n";
    exit
end

rest.AddHeader("Authorization","Bearer CLOUD_STORAGE_TOKEN")

sbResponseBody = Chilkat::CkStringBuilder.new()
success = rest.FullRequestNoBodySb("POST","/storage/v1/b/chilkat-bucket/o/starfish.jpg/rewriteTo/b/chilkat-images/o/starfish.jpg?project=MY_CLOUD_STORAGE_PROJECT",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

jsonResponse = Chilkat::CkJsonObject.new()
jsonResponse.LoadSb(sbResponseBody)

#  See the Online Tool for Generating JSON Parse Code

kind = jsonResponse.stringOf("kind")
totalBytesRewritten = jsonResponse.stringOf("totalBytesRewritten")
objectSize = jsonResponse.stringOf("objectSize")
done = jsonResponse.BoolOf("done")
resourceKind = jsonResponse.stringOf("resource.kind")
resourceId = jsonResponse.stringOf("resource.id")
resourceSelfLink = jsonResponse.stringOf("resource.selfLink")
resourceName = jsonResponse.stringOf("resource.name")
resourceBucket = jsonResponse.stringOf("resource.bucket")
resourceGeneration = jsonResponse.stringOf("resource.generation")
resourceMetageneration = jsonResponse.stringOf("resource.metageneration")
resourceContentType = jsonResponse.stringOf("resource.contentType")
resourceTimeCreated = jsonResponse.stringOf("resource.timeCreated")
resourceUpdated = jsonResponse.stringOf("resource.updated")
resourceStorageClass = jsonResponse.stringOf("resource.storageClass")
resourceTimeStorageClassUpdated = jsonResponse.stringOf("resource.timeStorageClassUpdated")
resourceSize = jsonResponse.stringOf("resource.size")
resourceMd5Hash = jsonResponse.stringOf("resource.md5Hash")
resourceMediaLink = jsonResponse.stringOf("resource.mediaLink")
resourceCrc32c = jsonResponse.stringOf("resource.crc32c")
resourceEtag = jsonResponse.stringOf("resource.etag")

Sample JSON Response Body

{
  "kind": "storage#rewriteResponse",
  "totalBytesRewritten": "6229",
  "objectSize": "6229",
  "done": true,
  "resource": {
    "kind": "storage#object",
    "id": "chilkat-images/starfish.jpg/1540298057547474",
    "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-images/o/starfish.jpg",
    "name": "starfish.jpg",
    "bucket": "chilkat-images",
    "generation": "1540298057547474",
    "metageneration": "1",
    "contentType": "image/jpeg",
    "timeCreated": "2018-10-23T12:34:17.547Z",
    "updated": "2018-10-23T12:34:17.547Z",
    "storageClass": "MULTI_REGIONAL",
    "timeStorageClassUpdated": "2018-10-23T12:34:17.547Z",
    "size": "6229",
    "md5Hash": "LpxZ2/JmI2fcl9/dqF2gSA==",
    "mediaLink": "https://www.googleapis.com/download/storage/v1/b/chilkat-images/o/starfish.jpg?generation=1540298057547474&alt=media",
    "crc32c": "9RjgwQ==",
    "etag": "CNL9xbTJnN4CEAE="
  }
}