class Aws::Plugins::EC2CopyEncryptedSnapshot::Handler

def call(context)
  params = context.params
  params[:destination_region] = context.config.region
  params[:presigned_url] = presigned_url(context.client, params)
  @handler.call(context)
end

def presigned_url(client, params)
  client = source_region_client(client, params)
  client.handle(PresignHandler, step: :build, priority: 0)
  client.handlers.remove(Handler)
  client.copy_snapshot(params).data # presigned url
end

def source_region_client(client, params)
  EC2::Client.new({
    region: params[:source_region] || 'region',
    credentials: client.config.credentials,
  })
end