kpt-grpc-demo/google/maps/routing/v2/library_grpc_service_config.json

{
  "methodConfig": [{
    "name": [
      { "service": "google.maps.routing.v2.RoutesService", "method": "ComputeRoutes" },
      { "service": "google.maps.routing.v2.RoutesService", "method": "ComputeRouteMatrix" }
    ],
    "timeout": "60s",
    "retryPolicy": {
      "maxAttempts": 5,
      "initialBackoff": "1s",
      "maxBackoff": "10s",
      "backoffMultiplier": 1.3,
      "retryableStatusCodes": ["UNAVAILABLE"]
    }
  }]
}