Apply unpacks the platform-specific Terraform modules into the given directory and then runs 'terraform init' and 'terraform apply'.

Destroy unpacks the platform-specific Terraform modules into the given directory and then runs 'terraform init' and 'terraform destroy'.

InitializeProvider creates a concrete infrastructure.Provider for the given platform.

Outputs reads the terraform state file and returns the outputs of the stage as json.

UnpackTerraform unpacks the terraform binary and the specified provider binaries into the specified directory.

StateFilename is the default name of the terraform state file.

Provider implements the infrastructure.Provider interface.

Stage is an individual stage of terraform infrastructure provisioning.