mare.proto

// Copyright (c) 2021 Mert Bora Alper and EASE Lab
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.

/*
   Compile using:
       protoc \
           --go_out=. \
           --go_opt="paths=source_relative" \
           --go-grpc_out=. \
           --go-grpc_opt="paths=source_relative" \
           mare.proto
*/

syntax = "proto3";

option go_package = "github.com/ease-lab/mare";

package mare;

service Mare {
    rpc MapBatch(MapBatchRequest) returns (MapBatchResponse) {}
    rpc ReduceBatch(ReduceBatchRequest) returns (ReduceBatchResponse) {}
}

enum ResourceBackend {
    NULL = 0;
    FILE = 1;
    S3 = 2;
    XDT = 3;
}

message Resource {
    ResourceBackend backend = 1;
    string locator = 2;
}

message ResourceHint {
    ResourceBackend backend = 1;
    string hint = 2;
}

message MapBatchRequest {
    Resource input = 1;
    ResourceHint outputHint = 2;
}

message MapBatchResponse {
    Resource output = 1;
    repeated string keys = 2;
}

message ReduceBatchRequest {
    repeated string keys = 1;
    repeated Resource inputs = 2;
    ResourceHint outputHint = 3;
}

message ReduceBatchResponse {
    Resource output = 1;
}