test/src/NdbMixRestarter.cpp

/*
   Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.

   This program is also distributed with certain software (including
   but not limited to OpenSSL) that is licensed under separate terms,
   as designated in a particular file or component or in included license
   documentation.  The authors of MySQL hereby grant you an additional
   permission to link the program and your derivative works with the
   separately licensed software that they have included with MySQL.

   This program 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, version 2.0, 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 St, Fifth Floor, Boston, MA 02110-1301  USA
*/

#include "NdbMixRestarter.hpp"

NdbMixRestarter::NdbMixRestarter(unsigned * _seed, const char* _addr) :
  NdbRestarter(_addr),
  m_mask(~(Uint32)0)
{
  if (_seed == 0)
  {
    ownseed = (unsigned)NdbTick_CurrentMillisecond();
    seed = &ownseed;
  }
  else
  {
    seed = _seed;
  }
}

NdbMixRestarter::~NdbMixRestarter()
{

}

#define CHECK(b) if (!(b)) { \
  ndbout << "ERR: "<< step->getName() \
         << " failed on line " << __LINE__ << endl; \
  result = NDBT_FAILED; \
  continue; }

int
NdbMixRestarter::restart_cluster(NDBT_Context* ctx,
                                 NDBT_Step* step,
                                 bool stopabort)
{
  int timeout = 180;
  int result = NDBT_OK;

  do
  {
    ctx->setProperty(NMR_SR_THREADS_STOPPED, (Uint32)0);
    ctx->setProperty(NMR_SR_VALIDATE_THREADS_DONE, (Uint32)0);

    ndbout << " -- Shutting down " << endl;
    ctx->setProperty(NMR_SR, NdbMixRestarter::SR_STOPPING);
    CHECK(restartAll(false, true, stopabort) == 0);
    ctx->setProperty(NMR_SR, NdbMixRestarter::SR_STOPPED);
    CHECK(waitClusterNoStart(timeout) == 0);

    Uint32 cnt = ctx->getProperty(NMR_SR_THREADS);
    Uint32 curr= ctx->getProperty(NMR_SR_THREADS_STOPPED);
    while(curr != cnt && !ctx->isTestStopped())
    {
      if (curr > cnt)
      {
        ndbout_c("stopping: curr: %d cnt: %d", curr, cnt);
        abort();
      }

      NdbSleep_MilliSleep(100);
      curr= ctx->getProperty(NMR_SR_THREADS_STOPPED);
    }

    CHECK(ctx->isTestStopped() == false);
    CHECK(startAll() == 0);
    CHECK(waitClusterStarted(timeout) == 0);

    cnt = ctx->getProperty(NMR_SR_VALIDATE_THREADS);
    if (cnt)
    {
      ndbout << " -- Validating starts " << endl;
      ctx->setProperty(NMR_SR_VALIDATE_THREADS_DONE, (Uint32)0);
      ctx->setProperty(NMR_SR, NdbMixRestarter::SR_VALIDATING);
      curr = ctx->getProperty(NMR_SR_VALIDATE_THREADS_DONE);
      while (curr != cnt && !ctx->isTestStopped())
      {
        if (curr > cnt)
        {
          ndbout_c("validating: curr: %d cnt: %d", curr, cnt);
          abort();
        }

        NdbSleep_MilliSleep(100);
        curr = ctx->getProperty(NMR_SR_VALIDATE_THREADS_DONE);
      }
      ndbout << " -- Validating complete " << endl;
    }
    CHECK(ctx->isTestStopped() == false);
    ctx->setProperty(NMR_SR, NdbMixRestarter::SR_RUNNING);

  } while(0);

  return result;
}

static
void
select_nodes_to_stop(Vector<ndb_mgm_node_state*>& victims,
                     Vector<ndb_mgm_node_state>& nodes)
{
  Uint32 i, j;
  Vector<ndb_mgm_node_state*> alive_nodes;
  for(i = 0; i<nodes.size(); i++)
  {
    ndb_mgm_node_state* node = &nodes[i];
    if (node->node_status == NDB_MGM_NODE_STATUS_STARTED)
      alive_nodes.push_back(node);
  }

  // Remove those with one in node group
  for(i = 0; i<alive_nodes.size(); i++)
  {
    int group = alive_nodes[i]->node_group;
    for(j = 0; j<alive_nodes.size(); j++)
    {
      if (i != j && alive_nodes[j]->node_group == group)
      {
	victims.push_back(alive_nodes[i]);
	break;
      }
    }
  }
}

static
ndb_mgm_node_state*
select_node_to_stop(unsigned * seed, Vector<ndb_mgm_node_state>& nodes)
{
  Vector<ndb_mgm_node_state*> victims;
  select_nodes_to_stop(victims, nodes);

  if (victims.size())
  {
    int victim = ndb_rand_r(seed) % victims.size();
    return victims[victim];
  }
  else
  {
    return 0;
  }
}

static
void
select_nodes_to_start(Vector<ndb_mgm_node_state*>& victims,
                      Vector<ndb_mgm_node_state>& nodes)
{
  Uint32 i;
  for(i = 0; i<nodes.size(); i++)
  {
    ndb_mgm_node_state* node = &nodes[i];
    if (node->node_status == NDB_MGM_NODE_STATUS_NOT_STARTED)
      victims.push_back(node);
  }
}

static
ndb_mgm_node_state*
select_node_to_start(unsigned * seed,
                     Vector<ndb_mgm_node_state>& nodes)
{
  Vector<ndb_mgm_node_state*> victims;
  select_nodes_to_start(victims, nodes);

  if (victims.size())
  {
    int victim = ndb_rand_r(seed) % victims.size();
    return victims[victim];
  }
  else
  {
    return 0;
  }
}

void
NdbMixRestarter::setRestartTypeMask(Uint32 mask)
{
  m_mask = mask;
}

int
NdbMixRestarter::runUntilStopped(NDBT_Context* ctx,
                                 NDBT_Step* step,
                                 Uint32 freq)
{
  if (init(ctx, step))
    return NDBT_FAILED;

  while (!ctx->isTestStopped())
  {
    if (dostep(ctx, step))
      return NDBT_FAILED;
    NdbSleep_SecSleep(freq);
  }

  if (!finish(ctx, step))
    return NDBT_FAILED;

  return NDBT_OK;
}

int
NdbMixRestarter::runPeriod(NDBT_Context* ctx,
                           NDBT_Step* step,
                           Uint32 period, Uint32 freq)
{
  if (init(ctx, step))
    return NDBT_FAILED;

  Uint32 stop = (Uint32)time(0) + period;
  while (!ctx->isTestStopped() && (time(0) < stop))
  {
    if (dostep(ctx, step))
    {
      return NDBT_FAILED;
    }
    NdbSleep_SecSleep(freq);
  }

  if (finish(ctx, step))
  {
    return NDBT_FAILED;
  }

  ctx->stopTest();
  return NDBT_OK;
}

int
NdbMixRestarter::init(NDBT_Context* ctx, NDBT_Step* step)
{
  waitClusterStarted();
  m_nodes = ndbNodes;
  return 0;
}

int
NdbMixRestarter::dostep(NDBT_Context* ctx, NDBT_Step* step)
{
  ndb_mgm_node_state* node = 0;
  int action;
loop:
  while(((action = (1 << (ndb_rand_r(seed) % RTM_COUNT))) & m_mask) == 0);
  switch(action){
  case RTM_RestartCluster:
    if (restart_cluster(ctx, step))
      return NDBT_FAILED;
    for (Uint32 i = 0; i<m_nodes.size(); i++)
      m_nodes[i].node_status = NDB_MGM_NODE_STATUS_STARTED;
    break;
  case RTM_RestartNode:
  case RTM_RestartNodeInitial:
  case RTM_StopNode:
  case RTM_StopNodeInitial:
  {
    if ((node = select_node_to_stop(seed, m_nodes)) == 0)
      goto loop;

    if (action == RTM_RestartNode || action == RTM_RestartNodeInitial)
      ndbout << "Restarting " << node->node_id;
    else
      ndbout << "Stopping " << node->node_id;

    bool initial =
      action == RTM_RestartNodeInitial || action == RTM_StopNodeInitial;

    if (initial)
      ndbout << " inital";
    ndbout << endl;

    if (restartOneDbNode(node->node_id, initial, true, true))
      return NDBT_FAILED;

    if (waitNodesNoStart(&node->node_id, 1))
      return NDBT_FAILED;

    node->node_status = NDB_MGM_NODE_STATUS_NOT_STARTED;

    if (action == RTM_StopNode || action == RTM_StopNodeInitial)
      break;
    else
      goto start;
  }
  case RTM_StartNode:
    if ((node = select_node_to_start(seed, m_nodes)) == 0)
      goto loop;
start:
    ndbout << "Starting " << node->node_id << endl;
    if (startNodes(&node->node_id, 1))
      return NDBT_FAILED;
    if (waitNodesStarted(&node->node_id, 1))
      return NDBT_FAILED;

    node->node_status = NDB_MGM_NODE_STATUS_STARTED;
    break;
  }
  return NDBT_OK;
}

int
NdbMixRestarter::finish(NDBT_Context* ctx, NDBT_Step* step)
{
  Vector<int> not_started;
  {
    ndb_mgm_node_state* node = 0;
    while((node = select_node_to_start(seed, m_nodes)))
    {
      not_started.push_back(node->node_id);
      node->node_status = NDB_MGM_NODE_STATUS_STARTED;
    }
  }

  if (not_started.size())
  {
    ndbout << "Starting stopped nodes " << endl;
    if (startNodes(not_started.getBase(), not_started.size()))
      return NDBT_FAILED;
    if (waitClusterStarted())
      return NDBT_FAILED;
  }
  return NDBT_OK;
}

template class Vector<ndb_mgm_node_state*>;