ch08/

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Chapter 8: The gRPC Ecosystem

ProductInfo Service and Client

• Online retail scenario has a ProductInfo microservice which is responsible for managing the products and their information. The consumer of that service can add, retrieve products via that service.

• ProductInfo service and the consumer of that service are implemented in both Go and Java languages.

• This use case shows how you can implement both ProductInfo service and its consumer.

Service Definition

package ecommerce;

service ProductInfo {
    rpc addProduct(Product) returns (google.protobuf.StringValue);
    rpc getProduct(google.protobuf.StringValue) returns (Product);
}

message Product {
    string id = 1;
    string name = 2;
    string description = 3;
    float price = 4;
}

Implementation

• gRPC Gateway [Go]
• Server Reflection [Go] [Java]