planning_request_adapter.cpp

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/* Author: Ioan Sucan */

#include <moveit/planning_request_adapter/planning_request_adapter.h>
#include <boost/bind.hpp>
#include <algorithm>

// we could really use some c++11 lambda functions here :)

namespace planning_request_adapter
{
namespace
{
bool callPlannerInterfaceSolve(const planning_interface::PlannerManager *planner,
                               const planning_scene::PlanningSceneConstPtr& planning_scene,
                               const planning_interface::MotionPlanRequest &req,
                               planning_interface::MotionPlanResponse &res)
{
  planning_interface::PlanningContextPtr context = planner->getPlanningContext(planning_scene, req, res.error_code_);
  if (context)
    return context->solve(res);
  else
    return false;
}
}
}

bool planning_request_adapter::PlanningRequestAdapter::adaptAndPlan(const planning_interface::PlannerManagerPtr &planner,
                                                                    const planning_scene::PlanningSceneConstPtr& planning_scene,
                                                                    const planning_interface::MotionPlanRequest &req,
                                                                    planning_interface::MotionPlanResponse &res,
                                                                    std::vector<std::size_t> &added_path_index) const
{
  return adaptAndPlan(boost::bind(&callPlannerInterfaceSolve, planner.get(), _1, _2, _3), planning_scene, req, res, added_path_index);
}

bool planning_request_adapter::PlanningRequestAdapter::adaptAndPlan(const planning_interface::PlannerManagerPtr &planner,
                                                                    const planning_scene::PlanningSceneConstPtr& planning_scene,
                                                                    const planning_interface::MotionPlanRequest &req,
                                                                    planning_interface::MotionPlanResponse &res) const
{
  std::vector<std::size_t> dummy;
  return adaptAndPlan(planner, planning_scene, req, res, dummy);
}

namespace planning_request_adapter
{

namespace
{

// boost bind is not happy with overloading, so we add intermediate function objects

bool callAdapter1(const PlanningRequestAdapter *adapter,
                  const planning_interface::PlannerManagerPtr &planner,
                  const planning_scene::PlanningSceneConstPtr& planning_scene,
                  const planning_interface::MotionPlanRequest &req,
                  planning_interface::MotionPlanResponse &res,
                  std::vector<std::size_t> &added_path_index)
{
  try
  {
    return adapter->adaptAndPlan(planner, planning_scene, req, res, added_path_index);
  }
  catch(std::runtime_error &ex)
  {
    logError("Exception caught executing *final* adapter '%s': %s", adapter->getDescription().c_str(), ex.what());
    added_path_index.clear();
    return callPlannerInterfaceSolve(planner.get(), planning_scene, req, res);
  }
  catch(...)
  {
    logError("Exception caught executing *final* adapter '%s'", adapter->getDescription().c_str());
    added_path_index.clear();
    return callPlannerInterfaceSolve(planner.get(), planning_scene, req, res);
  }
}

bool callAdapter2(const PlanningRequestAdapter *adapter,
                  const PlanningRequestAdapter::PlannerFn &planner,
                  const planning_scene::PlanningSceneConstPtr& planning_scene,
                  const planning_interface::MotionPlanRequest &req,
                  planning_interface::MotionPlanResponse &res,
                  std::vector<std::size_t> &added_path_index)
{
  try
  {
    return adapter->adaptAndPlan(planner, planning_scene, req, res, added_path_index);
  }
  catch(std::runtime_error &ex)
  {
    logError("Exception caught executing *next* adapter '%s': %s", adapter->getDescription().c_str(), ex.what());
    added_path_index.clear();
    return planner(planning_scene, req, res);
  }
  catch(...)
  {
    logError("Exception caught executing *next* adapter '%s'", adapter->getDescription().c_str());
    added_path_index.clear();
    return planner(planning_scene, req, res);
  }
}

}

}

bool planning_request_adapter::PlanningRequestAdapterChain::adaptAndPlan(const planning_interface::PlannerManagerPtr &planner,
                                                                         const planning_scene::PlanningSceneConstPtr& planning_scene,
                                                                         const planning_interface::MotionPlanRequest &req,
                                                                         planning_interface::MotionPlanResponse &res) const
{
  std::vector<std::size_t> dummy;
  return adaptAndPlan(planner, planning_scene, req, res, dummy);
}

bool planning_request_adapter::PlanningRequestAdapterChain::adaptAndPlan(const planning_interface::PlannerManagerPtr &planner,
                                                                         const planning_scene::PlanningSceneConstPtr& planning_scene,
                                                                         const planning_interface::MotionPlanRequest &req,
                                                                         planning_interface::MotionPlanResponse &res,
                                                                         std::vector<std::size_t> &added_path_index) const
{
  // if there are no adapters, run the planner directly
  if (adapters_.empty())
  {
    added_path_index.clear();
    return callPlannerInterfaceSolve(planner.get(), planning_scene, req, res);
  }
  else
  {
    // the index values added by each adapter
    std::vector<std::vector<std::size_t> > added_path_index_each(adapters_.size());

    // if there are adapters, construct a function pointer for each, in order,
    // so that in the end we have a nested sequence of function pointers that call the adapters in the correct order.
    PlanningRequestAdapter::PlannerFn fn = boost::bind(&callAdapter1, adapters_.back().get(), planner, _1, _2, _3, boost::ref(added_path_index_each.back()));
    for (int i = adapters_.size() - 2 ; i >= 0 ; --i)
      fn = boost::bind(&callAdapter2, adapters_[i].get(), fn, _1, _2, _3, boost::ref(added_path_index_each[i]));
    bool result = fn(planning_scene, req, res);
    added_path_index.clear();

    // merge the index values from each adapter
    for (std::size_t i = 0 ; i < added_path_index_each.size() ; ++i)
      for (std::size_t j = 0 ; j < added_path_index_each[i].size() ; ++j)
      {
        for (std::size_t k = 0 ; k < added_path_index.size() ; ++k)
          if (added_path_index_each[i][j] <= added_path_index[k])
            added_path_index[k]++;
        added_path_index.push_back(added_path_index_each[i][j]);
      }
    std::sort(added_path_index.begin(), added_path_index.end());
    return result;
  }
}