OperationStop.cc

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/*
 * Copyright (C) 2007-2015 Hypertable, Inc.
 *
 * This file is part of Hypertable.
 *
 * Hypertable is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; version 3 of the
 * License, or any later version.
 *
 * Hypertable is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

#include <Common/Compat.h>

#include "OperationStop.h"

#include <Hypertable/Lib/RangeServer/Client.h>

#include <Common/Error.h>
#include <Common/FailureInducer.h>
#include <Common/ScopeGuard.h>
#include <Common/Serialization.h>
#include <Common/StringExt.h>
#include <Common/System.h>
#include <Common/md5.h>

using namespace Hypertable;

OperationStop::OperationStop(ContextPtr &context, EventPtr &event) 
  : OperationEphemeral(context, event, MetaLog::EntityType::OPERATION_STOP) {
  const uint8_t *ptr = event->payload;
  size_t remaining = event->payload_len;
  m_params.decode(&ptr, &remaining);
  m_dependencies.insert(Dependency::INIT);
}

void OperationStop::execute() {
  HT_INFOF("Entering OperationStop-%s state=%s",
           m_params.server().c_str(), OperationState::get_text(m_state));

  try {
    Lib::RangeServer::Client rsc(m_context->comm);
    CommAddress addr;

    addr.set_proxy(m_params.server());
    rsc.shutdown(addr);
  }
  catch (Exception &e) {
    if (e.code() == Error::COMM_INVALID_PROXY
            || e.code() == Error::COMM_NOT_CONNECTED)
      complete_error(Error::RANGESERVER_NOT_FOUND, m_params.server());
    else
      complete_error(e.code(), m_params.server());
    return;
  }

  complete_ok();

  HT_INFOF("Leaving OperationStop-%s state=%s",
          m_params.server().c_str(), OperationState::get_text(m_state));
}

void OperationStop::display_state(std::ostream &os) {
  os << " " << m_params.server() << " ";
}

const String OperationStop::name() {
  return "OperationStop";
}

const String OperationStop::label() {
  return format("OperationStop %s", m_params.server().c_str());
}