add bulk import test

src/intTest/java/V1ClientTest.java

@@ -7,10 +7,12 @@
 import java.util.Iterator;
 import java.util.Random;
 import java.util.Set;
+import java.util.concurrent.CountDownLatch;
 
 import com.authzed.api.v1.*;
 import com.authzed.grpcutil.BearerToken;
 
+import io.grpc.stub.StreamObserver;
 import org.junit.Test;
 
 import io.grpc.ManagedChannel;
@@ -174,6 +176,87 @@ private static String writeRelationship(PermissionsServiceGrpc.PermissionsServic
 		return relResponse.getWrittenAt().getToken();
 	}
 
+
+	class BulkImportObserver implements StreamObserver<BulkImportRelationshipsResponse> {
+		final CountDownLatch done = new CountDownLatch(1);
+		private long loaded;
+
+		@Override
+		public void onNext(BulkImportRelationshipsResponse resp) {
+			loaded += resp.getNumLoaded();
+		}
+
+		@Override
+		public void onError(Throwable throwable) {
+			// TODO need to capture error so that blocking callsite is able to access it
+			System.out.println("onError");
+			done.countDown();
+		}
+
+		@Override
+		public void onCompleted() {
+			System.out.println("onCompleted");
+			done.countDown();
+		}
+
+		public void await() throws InterruptedException {
+			done.await();
+		}
+
+		public long loaded() {
+			return loaded;
+		}
+	};
+
+	@Test
+	public void testBulkImport() {
+
+		ManagedChannel channel = ManagedChannelBuilder.forTarget(target).usePlaintext().build();
+		String token = generateToken();
+		ExperimentalServiceGrpc.ExperimentalServiceStub experimentalService = ExperimentalServiceGrpc.
+				newStub(channel)
+				.withCallCredentials(new BearerToken(token));
+
+		BulkImportObserver responseObserver = new BulkImportObserver();
+		writeTestSchema(token, channel);
+		io.grpc.stub.StreamObserver<com.authzed.api.v1.BulkImportRelationshipsRequest>
+				observer = experimentalService.bulkImportRelationships(responseObserver);
+
+		for (int i = 0; i < 10; i++) {
+			BulkImportRelationshipsRequest req = BulkImportRelationshipsRequest.newBuilder()
+					.addRelationships(relationship("test/article", "java_test_" + i, "author", "test/user", "george")).build();
+			observer.onNext(req);
+		}
+		observer.onCompleted();
+
+		try {
+			responseObserver.await();
+		} catch (InterruptedException e) {
+			throw new RuntimeException(e);
+		}
+
+		assertEquals(10, responseObserver.loaded());
+	}
+
+	private static Relationship relationship(String resourceType, String resourceID, String relation, String subjectType, String subjectID) {
+		return Relationship.newBuilder()
+				.setResource(
+						ObjectReference.newBuilder()
+								.setObjectType(resourceType)
+								.setObjectId(resourceID)
+								.build())
+				.setRelation(relation)
+				.setSubject(
+						SubjectReference.newBuilder()
+								.setObject(
+										ObjectReference.newBuilder()
+												.setObjectType(subjectType)
+												.setObjectId(subjectID)
+												.build())
+								.build())
+				.build();
+	}
+
 	private static SchemaServiceGrpc.SchemaServiceBlockingStub writeTestSchema(String token, ManagedChannel channel) {
 		SchemaServiceGrpc.SchemaServiceBlockingStub schemaService = SchemaServiceGrpc.newBlockingStub(channel)
 				.withCallCredentials(new BearerToken(token));