This is java implementation of the grpc client of a specific proto files
- clone the project and import as maven project in eclipse or intelij
mvn clean install - You have to add the proto file inside
src/main/resources/which should be same as in your server - Now you have to generate the stubds, Right click on
pom.xmland then run the default profile, that will generate the stubs if not already generated - In next section we will seee how to write a client using these stubs in Java
public static void main(String args[]) {
ManagedChannel channel = ManagedChannelBuilder.forAddress("localhost", 9094).usePlaintext().build();
PatientServiceBlockingStub blockingStub = PatientServiceGrpc.newBlockingStub(channel);
PatientResponse allPatients = blockingStub.getAllPatients(null);
AddDeletePatientResponse.Builder response = AddDeletePatientResponse.newBuilder();
response.setStatusCode(1);
response.setSuccessMessage("Hello");
response.setErrorMessage("world");
int size = response.build().getSerializedSize();
System.out.println("---------------------size of the message--------------"+size);
System.out.println("==================response==============="+response);
}
syntax = "proto3";
option java_package = "patientProto";
service PatientService{
rpc getPatient(PatientRequest) returns (PatientResponse);
rpc addPatient(Patient) returns (AddDeletePatientResponse);
rpc deletePatient(Patient) returns (AddDeletePatientResponse);
rpc getAllPatients(EmptyResponse) returns (PatientResponse);
}
message PatientRequest{
int32 identifier = 1;
string name = 2;
}
message PatientResponse{
repeated Patient patient = 1;
}
enum Gender{
MALE = 0;
FEMALE = 1;
}
enum MaritalStatus{
MARRIED = 0;
UNMERRIED = 1;
}
message Patient{
int32 identifier = 1;
string name = 2;
Gender gender = 3;
bool active = 4;
string address = 5;
MaritalStatus maritalStatus = 6;
string link = 7;
repeated string language = 8;
repeated Provider careProvider = 9;
string managingOrganization = 10;
repeated Contact guardian = 11;
}
message Provider{
string name = 1;
int32 identifier = 2;
int32 tin = 3;
}
message Contact{
string name = 1;
string relationWithPatient = 2;
string cotactDetails = 3;
}
message AddDeletePatientResponse{
string successMessage = 1;
string errorMessage = 2;
int32 statusCode = 3;
}
message EmptyResponse{
}
Now you can run your client to request the server.
Please raise an issue if you find anything which is not working or want unimplemented functionality.