Implement AuthServer and Client (2.1.2.2 & 3)

ass2-service/auth-client/src/main/java/dst/ass2/service/auth/client/impl/GrpcAuthenticationClient.java

@@ -2,31 +2,45 @@ package dst.ass2.service.auth.client.impl;
 
 import dst.ass2.service.api.auth.AuthenticationException;
 import dst.ass2.service.api.auth.NoSuchUserException;
+import dst.ass2.service.api.auth.proto.*;
 import dst.ass2.service.auth.client.AuthenticationClientProperties;
 import dst.ass2.service.auth.client.IAuthenticationClient;
+import io.grpc.ManagedChannel;
+import io.grpc.ManagedChannelBuilder;
+import io.grpc.StatusRuntimeException;
 
 public class GrpcAuthenticationClient implements IAuthenticationClient {
-
-    // TODO make use of the generated grpc sources to implement a blocking client
+    private final ManagedChannel channel;
+    private final AuthServiceGrpc.AuthServiceBlockingStub blockingStub;
 
     public GrpcAuthenticationClient(AuthenticationClientProperties properties) {
-        // TODO
+        this.channel = ManagedChannelBuilder.forAddress(properties.getHost(), properties.getPort()).usePlaintext().build();
+        this.blockingStub = AuthServiceGrpc.newBlockingStub(this.channel);
     }
 
     @Override
     public String authenticate(String email, String password) throws NoSuchUserException, AuthenticationException {
-        // TODO
-        return null;
+        AuthenticationRequest request = AuthenticationRequest.newBuilder().setEmail(email).setPassword(password).build();
+        AuthenticationResponse response = blockingStub.authenticate(request);
+
+        if(response.getStatus().startsWith("NoSuchUserException"))
+            throw new NoSuchUserException("User with email " + email + " could not be found");
+
+        if(response.getStatus().startsWith("AuthenticationException"))
+            throw new AuthenticationException("Password for user with email " + email + " was incorrect");
+
+        return response.getToken();
     }
 
     @Override
     public boolean isTokenValid(String token) {
-        // TODO
-        return false;
+        TokenValidationRequest request = TokenValidationRequest.newBuilder().setToken(token).build();
+        TokenValidationResponse response = blockingStub.validateToken(request);
+        return response.getValid();
     }
 
     @Override
     public void close() {
-        // TODO
+        this.channel.shutdownNow();
     }
 }