src/kudu/tools/pbc-dump.cc

// 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 <iostream>
#include <string>

#include <glog/logging.h>

#include "kudu/gutil/gscoped_ptr.h"
#include "kudu/util/env.h"
#include "kudu/util/flags.h"
#include "kudu/util/flag_tags.h"
#include "kudu/util/logging.h"
#include "kudu/util/pb_util.h"
#include "kudu/util/status.h"

using kudu::Status;
using std::cerr;
using std::endl;
using std::string;

DEFINE_bool(oneline, false, "print each protobuf on a single line");
TAG_FLAG(oneline, stable);

namespace kudu {
namespace pb_util {

Status DumpPBContainerFile(const string& filename) {
  Env* env = Env::Default();
  gscoped_ptr<RandomAccessFile> reader;
  RETURN_NOT_OK(env->NewRandomAccessFile(filename, &reader));
  ReadablePBContainerFile pb_reader(reader.Pass());
  RETURN_NOT_OK(pb_reader.Init());
  RETURN_NOT_OK(pb_reader.Dump(&std::cout, FLAGS_oneline));

  return Status::OK();
}

} // namespace pb_util
} // namespace kudu

int main(int argc, char **argv) {
  kudu::ParseCommandLineFlags(&argc, &argv, true);
  kudu::InitGoogleLoggingSafe(argv[0]);
  if (argc != 2) {
    cerr << "usage: " << argv[0] << " [--oneline] <protobuf container filename>" << endl;
    return 2;
  }

  Status s = kudu::pb_util::DumpPBContainerFile(argv[1]);
  if (s.ok()) {
    return 0;
  } else {
    cerr << s.ToString() << endl;
    return 1;
  }
}