Function TEST

be/src/util/logging-support-test.cc:36–93

}

TEST(LoggingSupport, DeleteOldLogs) {
  path dir = filesystem::unique_path();
  filesystem::create_directories(dir);

  time_t current_time;
  time(&current_time);

  // Start with one file
  path file1 = dir / "impala1";
  CreateFile(file1, current_time - 4);

  string filename_matcher = (filesystem::canonical(dir) / "impala*").string();

  // If there is only one file, it should never be deleted, regardless
  // of the value of max_log_files.
  LoggingSupport::DeleteOldLogs(filename_matcher, 0);
  EXPECT_TRUE(filesystem::exists(file1));
  LoggingSupport::DeleteOldLogs(filename_matcher, 1);
  EXPECT_TRUE(filesystem::exists(file1));
  LoggingSupport::DeleteOldLogs(filename_matcher, 2);
  EXPECT_TRUE(filesystem::exists(file1));

  // Add two more files.
  path file2 = dir / "impala2";
  CreateFile(file2, current_time - 3);

  path file3 = dir / "impala3";
  CreateFile(file3, current_time - 2);

  // max_log_files < 0 shouldn't remove any files
  LoggingSupport::DeleteOldLogs(filename_matcher, -1);
  EXPECT_TRUE(filesystem::exists(file1));
  EXPECT_TRUE(filesystem::exists(file2));
  EXPECT_TRUE(filesystem::exists(file3));

  // The oldest file (file1) shoujld be deleted.
  LoggingSupport::DeleteOldLogs(filename_matcher, 2);
  EXPECT_FALSE(filesystem::exists(file1));
  EXPECT_TRUE(filesystem::exists(file2));
  EXPECT_TRUE(filesystem::exists(file3));

  // Add two more files.
  path file4 = dir / "impala4";
  CreateFile(file4, current_time - 1);

  path file5 = dir / "impala5";
  CreateFile(file5, current_time);

  // The oldest 2 files (file2 and file3) should be deleted.
  LoggingSupport::DeleteOldLogs(filename_matcher, 2);
  EXPECT_FALSE(filesystem::exists(file1));
  EXPECT_FALSE(filesystem::exists(file2));
  EXPECT_FALSE(filesystem::exists(file3));
  EXPECT_TRUE(filesystem::exists(file4));
  EXPECT_TRUE(filesystem::exists(file5));

  filesystem::remove_all(dir);
}