grpc/protos/stock.proto

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syntax = "proto3";

package examples;

// Protocol type definitions
message StockRequest {
  optional string symbol = 1;
  optional int32 num_trades_to_watch = 2;
}

message StockReply {
  optional float price = 1;
  optional string symbol = 2;
}

// Interface exported by the server
service Stock {
  // A simple blocking RPC.
  //
  // Obtains the last traded price for the given Stock.
  rpc GetLastTradePrice(StockRequest) returns (StockReply) {
  }

  // A Unidirectional server-to-client streaming RPC.
  //
  // Streams future prices for a given symbol.
  rpc WatchFutureTrades(StockRequest) returns (stream StockReply) {
  }

  // A Unidirectional client-to-server streaming RPC.
  //
  // Gets the highest traded price for a series of symbols
  rpc GetHighestTradePrice(stream StockRequest) returns (StockReply) {
  }

  // Bidirectional streaming RPC.
  //
  // Gets the most recent traded price of series of trades.
  rpc GetLastTradePriceMultiple(stream StockRequest) returns
    (stream StockReply) {
  }
}