Hands-On Software Engineering with Golang

Defining RPCs for accessing a text-indexer instance

The second API that we will be designing will grant our project's applications access to any concrete link-graph implementation that satisfies the index.Indexer 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 TextIndexer {  rpc Index(Document) returns (Document);  rpc UpdateScore(UpdateScoreRequest) returns (google.protobuf.Empty);  rpc Search(Query) returns (stream QueryResult);}

The Index method inserts a document into the search index or triggers a reindexing operation if the document already ...