mock metadata server

main.go

func main() {
	metadataServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		switch r.RequestURI {
		case "/dynamic/instance-identity/document":
			w.Write([]byte(document))
		case "/dynamic/instance-identity/pkcs7":
			w.Write([]byte(pkcs7))
		case "/dynamic/instance-identity/signature":
			w.Write([]byte(signature))
		}
		// w.WriteHeader(http.StatusOK)
	}))

	metadata := ec2metadata.New(
		session.New(),
		aws.NewConfig().WithEndpoint(metadataServer.URL),
	)

	if available := metadata.Available(); !available {
		log.Fatal("metadata not available")
	}

	_, err := metadata.GetInstanceIdentityDocument()
	if err != nil {
		log.Fatal(err)
	}

	fixture := UnmarshalTestFixture(pkcs7_2)
	p7, err := fullsailorpkcs7.Parse(fixture.Input)
	if err != nil {
		log.Fatal(err)
	}
	p7.Certificates = []*x509.Certificate{fixture.Certificate}
	if err := p7.Verify(); err != nil {
		log.Fatal(err)
	}

	fmt.Println(string(p7.Content))
}