TestStatusUtils.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
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package org.apache.arrow.flight.grpc;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertTrue;

import io.grpc.Metadata;
import io.grpc.Status;
import org.apache.arrow.flight.CallStatus;
import org.apache.arrow.flight.FlightStatusCode;
import org.junit.jupiter.api.Test;

public class TestStatusUtils {

  @Test
  public void testParseTrailers() {
    Status status = Status.CANCELLED;
    Metadata trailers = new Metadata();

    // gRPC can have trailers with certain metadata keys beginning with ":", such as ":status".
    // See https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md
    trailers.put(StatusUtils.keyOfAscii(":status"), "502");
    trailers.put(StatusUtils.keyOfAscii("date"), "Fri, 13 Sep 2015 11:23:58 GMT");
    trailers.put(StatusUtils.keyOfAscii("content-type"), "text/html");

    CallStatus callStatus = StatusUtils.fromGrpcStatusAndTrailers(status, trailers);

    assertEquals(FlightStatusCode.CANCELLED, callStatus.code());
    assertTrue(callStatus.metadata().containsKey(":status"));
    assertEquals("502", callStatus.metadata().get(":status"));
    assertTrue(callStatus.metadata().containsKey("date"));
    assertEquals("Fri, 13 Sep 2015 11:23:58 GMT", callStatus.metadata().get("date"));
    assertTrue(callStatus.metadata().containsKey("content-type"));
    assertEquals("text/html", callStatus.metadata().get("content-type"));
  }

  @Test
  public void testGrpcResourceExhaustedTranslatedToFlightStatus() {
    Status status = Status.RESOURCE_EXHAUSTED;

    CallStatus callStatus = StatusUtils.fromGrpcStatus(status);
    assertEquals(FlightStatusCode.RESOURCE_EXHAUSTED, callStatus.code());

    FlightStatusCode flightStatusCode = StatusUtils.fromGrpcStatusCode(status.getCode());
    assertEquals(FlightStatusCode.RESOURCE_EXHAUSTED, flightStatusCode);
  }

  @Test
  public void testFlightResourceExhaustedTranslatedToGrpcStatua() {
    CallStatus callStatus = CallStatus.RESOURCE_EXHAUSTED;

    Status.Code grpcStatusCode = StatusUtils.toGrpcStatusCode(callStatus.code());
    assertEquals(Status.RESOURCE_EXHAUSTED.getCode(), grpcStatusCode);

    Status grpcStatus = StatusUtils.toGrpcStatus(callStatus);
    assertEquals(Status.RESOURCE_EXHAUSTED.getCode(), grpcStatus.getCode());
  }
}