Google Cloud Storage driver

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An implementation of the storagedriver.StorageDriver interface which uses Google Cloud for object storage.

Parameters

Parameter	Required	Description
`bucket`	yes	Storage bucket name.
`keyfile`	no	A private service account key file in JSON format. Instead of a key file Google Application Default Credentials can be used.
`rootdirectory`	no	This is a prefix that will be applied to all Google Cloud Storage keys to allow you to segment data in your bucket if necessary.
`chunksize`	no (default 5242880)	This is the chunk size used for uploading large blobs, must be a multiple of 256*1024.

bucket: The name of your Google Cloud Storage bucket where you wish to store objects (needs to already be created prior to driver initialization).

keyfile: (optional) A private key file in JSON format, used for Service Account Authentication.

Note Instead of a key file you can use Google Application Default Credentials.

rootdirectory: (optional) The root directory tree in which all registry files will be stored. Defaults to the empty string (bucket root).

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