/*
 * (C) Copyright 2009-2016 ECMWF.
 *
 * This software is licensed under the terms of the Apache Licence Version 2.0
 * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
 * In applying this licence, ECMWF does not waive the privileges and immunities
 * granted to it by virtue of its status as an intergovernmental organisation
 * nor does it submit to any jurisdiction.
 */

#include "util/Logbook.h"

#include <limits>
#include <map>
#include <ostream>
#include <string>

#include "eckit/exception/Exceptions.h"
#include "eckit/log/JSON.h"
#include "eckit/parser/JSONParser.h"
#include "util/Logger.h"
#include "util/Mpi.h"

namespace util {

// -----------------------------------------------------------------------------

void Logbook::broadcast(Logbook& logbook, const size_t root) {
  std::string buffer;
  int buffer_size;
  if (mpi::comm().rank() == root) {
    std::stringstream s;
    eckit::JSON json(s);
    json.precision(std::numeric_limits<double>::max_digits10);
    json << *this;
    buffer = s.str();
    buffer_size = buffer.size();
  }

  mpi::comm().broadcast(buffer_size, root);

  if (mpi::comm().rank() != root) {
    buffer.resize(buffer_size);
  }

  mpi::comm().broadcast(buffer.begin(), buffer.end(), root);

  if (not(&logbook == this && mpi::comm().rank() == root)) {
    std::stringstream s;
    s << buffer;
    eckit::JSONParser parser(s);
    logbook = Logbook(parser.parse());
  }
}

// -----------------------------------------------------------------------------

void Logbook::broadcast(const size_t root) { this->broadcast(*this, root); }

// -----------------------------------------------------------------------------

void Logbook::throw_exception(const std::string& name) const {
  std::stringstream msg;
  msg << "Logbook::throw_exception Could not find metadata \"" << name << "\"";
  throw eckit::OutOfRange(msg.str(), Here());
}

// -----------------------------------------------------------------------------

}  // namespace util