hdfs-fs-cache-test.cc

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// Copyright 2015 Cloudera Inc.
//
// Licensed 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
// limitations under the License.

#include <string>
#include <gtest/gtest.h>
#include <gutil/strings/substitute.h>

#include "runtime/hdfs-fs-cache.h"
#include "common/names.h"

using namespace strings;

namespace impala {
void ValidateNameNode(const string& path, const string& expected_namenode,
    const string& expected_error) {
  string err;
  string namenode = HdfsFsCache::GetNameNodeFromPath(path, &err);
  if (err.empty()) {
    EXPECT_EQ(namenode, expected_namenode);
  } else {
    EXPECT_EQ(err, expected_error);
  }
}

TEST(HdfsFsCacheTest, Basic) {
  // Validate qualified paths for various FileSystems
  ValidateNameNode(string("hdfs://localhost:25000/usr/hive"),
      string("hdfs://localhost:25000/"), string(""));
  ValidateNameNode(string("hdfs://nameservice1/usr/hive"),
      string("hdfs://nameservice1/"), string(""));
  ValidateNameNode(string("s3a://hdfsbucket/usr/hive"),
      string("s3a://hdfsbucket/"), string(""));
  ValidateNameNode(string("hdfs://testserver/"), string("hdfs://testserver/"),
      string(""));

  // Validate local path
  ValidateNameNode(string("file:///usr/hive"), string("file:///"), string(""));
  ValidateNameNode(string("file:/usr/hive"), string("file:///"), string(""));

  // Validate unqualified path
  ValidateNameNode(string("/usr/hive"), string("default"), string(""));

  // Validate invalid path
  string path("://usr/hive");
  ValidateNameNode(string("://usr/hive"), string(""),
      Substitute("Path missing scheme: $0", path));
  path = string("hdfs://test_invalid_path");
  ValidateNameNode(path, string(""),
      Substitute("Path missing '/' after authority: $0", path));
}

}

int main(int argc, char **argv) {
  ::testing::InitGoogleTest(&argc, argv);
  return RUN_ALL_TESTS();
}