storj/protos/overlay/overlay.proto

// Copyright (C) 2018 Storj Labs, Inc.
// See LICENSE for copying information.

syntax = "proto3";

import "google/protobuf/duration.proto";

// NodeTransport is an enum of possible transports for the overlay network
enum NodeTransport {
    TCP = 0;
}

// Overlay defines the interface for communication with the overlay network
service Overlay {
    // Lookup finds a nodes address from the network
    rpc Lookup(LookupRequest) returns (LookupResponse);
    // FindStorageNodes finds a list of nodes in the network that meet the specified request parameters
    rpc FindStorageNodes(FindStorageNodesRequest) returns (FindStorageNodesResponse);
}

// LookupRequest is is request message for the lookup rpc call
message LookupRequest {
    string nodeID = 1;
}

// LookupResponse is is response message for the lookup rpc call
message LookupResponse {
    Node node = 1;
}

// FindStorageNodesResponse is is response message for the FindStorageNodes rpc call
message FindStorageNodesResponse {
    repeated Node nodes = 1;
}

// FindStorageNodesRequest is is request message for the FindStorageNodes rpc call
message FindStorageNodesRequest {
    int64 objectSize = 1;
    google.protobuf.Duration contractLength = 2;
    OverlayOptions opts = 3;
}

// NodeAddress contains the information needed to communicate with a node on the network
message NodeAddress {
    NodeTransport transport = 1;
    string address = 2;
}

// OverlayOptions is a set of criteria that a node must meet to be considered for a storage opportunity
message OverlayOptions {
    google.protobuf.Duration maxLatency = 1;
    NodeRep minReputation = 2; // Not sure what NodeRep is yet.
    int64 minSpeedKbps = 3;
    int64 limit = 4;
}

// NodeRep is the reputation characteristics of a node
message NodeRep {}

// Node represents a node in the overlay network
message Node {
    string id = 1;
    NodeAddress address = 2;
}