Hands-On Software Engineering with Golang

The provider service

The first and easiest service to implement is Provider. The following is the definition for the Provider type and its constructor:

type Provider struct {
    vendorID string
}

func NewProvider(vendorID string) *Provider {
    return &Provider{ vendorID: vendorID }
}

Next, we will implement the GetQuote method, as specified in the preceding protocol buffer definitions. To keep our example as simple as possible, we will provide a dummy implementation that returns a single quote with a random price value and the vendorID value that was passed as an argument to the NewProvider constructor:

func (p *Provider) GetQuote(ctx context.Context, req *proto.QuotesRequest) (*proto.QuotesResponse, error) {
    return &proto.QuotesResponse{ Quotes: ...