Node.js 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"

Node.js Example

var os = require('os');
if (os.platform() == 'win32') {  
    var chilkat = require('chilkat_node10_win32'); 
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('chilkat_node10_arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('chilkat_node10_linux32');
    } else {
        var chilkat = require('chilkat_node10_linux64');
    }
} else if (os.platform() == 'darwin') {
    var chilkat = require('chilkat_node10_macosx');
}

function chilkatExample() {

    var rest = new chilkat.Rest();
    var success;

    //  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
    var bTls = true;
    var port = 443;
    var bAutoReconnect = true;
    success = rest.Connect("www.googleapis.com",port,bTls,bAutoReconnect);
    if (success !== true) {
        console.log("ConnectFailReason: " + rest.ConnectFailReason);
        console.log(rest.LastErrorText);
        return;
    }

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

    var sbResponseBody = new chilkat.StringBuilder();
    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) {
        console.log(rest.LastErrorText);
        return;
    }

    var respStatusCode = rest.ResponseStatusCode;
    if (respStatusCode >= 400) {
        console.log("Response Status Code = " + respStatusCode);
        console.log("Response Header:");
        console.log(rest.ResponseHeader);
        console.log("Response Body:");
        console.log(sbResponseBody.GetAsString());
        return;
    }

    var jsonResponse = new chilkat.JsonObject();
    jsonResponse.LoadSb(sbResponseBody);

    //  See the Online Tool for Generating JSON Parse Code

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

}

chilkatExample();

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="
  }
}