Hands-On Software Engineering with Golang

Defining RPCs for accessing a remote link-graph instance

The first API that we will be designing will grant our project's applications access to any concrete link-graph implementation that satisfies the graph.Graph interface over a network link. The following snippet outlines the protocol buffer definitions for the RPC endpoints that we will need:

syntax="proto3";package proto;import "google/protobuf/timestamp.proto";import "google/protobuf/empty.proto";service LinkGraph {  rpc UpsertLink(Link) returns (Link);  rpc UpsertEdge(Edge) returns (Edge);  rpc RemoveStaleEdges(RemoveStaleEdgesQuery) returns (google.protobuf.Empty);  rpc Links(Range) returns (stream Link);  rpc Edges(Range) returns (stream Edge);}

The UpsertLink call inserts a new link ...