sbt-gcs is a simple sbt plugin to manipulate objects on Google Cloud Storage.

As a prerequisite, sbt 1.0.0 or newer is required.
In order to add the sbt-gcs plugin to your build, add the following to project/plugins.sbt.

addSbtPlugin("com.github.saint1991" % "sbt-gcs" % "0.2.1")

This plugin automatically add some tasks to manipulate Google Cloud Storage.

To upload files to Google Cloud Storage, you need to specify source/destination mapping at the mappings key.

// upload a text file and build artifact created by sbt-assembly
mappings in gcsUpload := Seq(
  Path.userHome / "foo.txt" -> "gs://bucket_name/path/to/upload/foo.txt",
  assembly.value -> "gs://bucket_name/path/to/artifact.jar" 
)

Then execute it as follows:

$ sbt gcsUpload

Similarly, to download objects from Google Cloud Storage, you also need to specify mappings. Please note that you need to write it in the destination -> source order. For example, by the following settings, image.png will be downloaded from gs://image_bucket/path/to/image.png to the user home.

// download an image file from  
mappings in gcsUpload := Seq(
  (Path.userHome / "image.png" , "gs://image_bucket/path/to/image.png") 
)

Executing it by:

$ sbt gcsDownload

To delete objects from Google Cloud Storage, you need to specify a list of object URLs to delete via the gcsUrls key.

gcsUrls in gcsDelete := Seq(
  "gs://bucket_name/path/to/object/to/delete.json"
)

Executing it by:

$ sbt gcsDelete

By default, sbt-gcs uses default credentials stated here. You can also explicitly set it via gcsCredential key.

e.g.

import java.io.FileInputStream
import com.google.auth.oauth2.UserCredentials

gcsCredential := Some(
    UserCredentials.fromStream(new FileInputStream(new File("credential.json")))
)

This code is open source software licensed under the Apache 2.0 License