constraints_storage.cpp

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/* Author: Ioan Sucan */

#include <moveit/warehouse/constraints_storage.h>

const std::string moveit_warehouse::ConstraintsStorage::DATABASE_NAME = "moveit_constraints";

const std::string moveit_warehouse::ConstraintsStorage::CONSTRAINTS_ID_NAME = "constraints_id";
const std::string moveit_warehouse::ConstraintsStorage::CONSTRAINTS_GROUP_NAME = "group_id";
const std::string moveit_warehouse::ConstraintsStorage::ROBOT_NAME = "robot_id";

moveit_warehouse::ConstraintsStorage::ConstraintsStorage(const std::string &host, const unsigned int port, double wait_seconds) :
  MoveItMessageStorage(host, port, wait_seconds)
{
  createCollections();
  ROS_DEBUG("Connected to MongoDB '%s' on host '%s' port '%u'.", DATABASE_NAME.c_str(), db_host_.c_str(), db_port_);
}

void moveit_warehouse::ConstraintsStorage::createCollections()
{
  constraints_collection_.reset(new ConstraintsCollection::element_type(DATABASE_NAME, "constraints", db_host_, db_port_, timeout_));
}

void moveit_warehouse::ConstraintsStorage::reset()
{
  constraints_collection_.reset();
  MoveItMessageStorage::drop(DATABASE_NAME);
  createCollections();
}

void moveit_warehouse::ConstraintsStorage::addConstraints(const moveit_msgs::Constraints &msg, const std::string &robot, const std::string &group)
{
  bool replace = false;
  if (hasConstraints(msg.name, robot, group))
  {
    removeConstraints(msg.name, robot, group);
    replace = true;
  }
  mongo_ros::Metadata metadata(CONSTRAINTS_ID_NAME, msg.name,
                               ROBOT_NAME, robot,
                               CONSTRAINTS_GROUP_NAME, group);
  constraints_collection_->insert(msg, metadata);
  ROS_DEBUG("%s constraints '%s'", replace ? "Replaced" : "Added", msg.name.c_str());
}

bool moveit_warehouse::ConstraintsStorage::hasConstraints(const std::string &name, const std::string &robot, const std::string &group) const
{
  mongo_ros::Query q(CONSTRAINTS_ID_NAME, name);
  if (!robot.empty())
    q.append(ROBOT_NAME, robot);
  if (!group.empty())
    q.append(CONSTRAINTS_GROUP_NAME, group);
  std::vector<ConstraintsWithMetadata> constr = constraints_collection_->pullAllResults(q, true);
  return !constr.empty();
}

void moveit_warehouse::ConstraintsStorage::getKnownConstraints(const std::string &regex, std::vector<std::string> &names, const std::string &robot, const std::string &group) const
{
  getKnownConstraints(names, robot, group);
  filterNames(regex, names);
}

void moveit_warehouse::ConstraintsStorage::getKnownConstraints(std::vector<std::string> &names, const std::string &robot, const std::string &group) const
{
  names.clear();
  mongo_ros::Query q;
  if (!robot.empty())
    q.append(ROBOT_NAME, robot);
  if (!group.empty())
    q.append(CONSTRAINTS_GROUP_NAME, group);
  std::vector<ConstraintsWithMetadata> constr = constraints_collection_->pullAllResults(q, true, CONSTRAINTS_ID_NAME, true);
  for (std::size_t i = 0; i < constr.size() ; ++i)
    if (constr[i]->metadata.hasField(CONSTRAINTS_ID_NAME.c_str()))
      names.push_back(constr[i]->lookupString(CONSTRAINTS_ID_NAME));
}

bool moveit_warehouse::ConstraintsStorage::getConstraints(ConstraintsWithMetadata &msg_m, const std::string &name, const std::string &robot, const std::string &group) const
{
  mongo_ros::Query q(CONSTRAINTS_ID_NAME, name);
  if (!robot.empty())
    q.append(ROBOT_NAME, robot);
  if (!group.empty())
    q.append(CONSTRAINTS_GROUP_NAME, group);
  std::vector<ConstraintsWithMetadata> constr = constraints_collection_->pullAllResults(q, false);
  if (constr.empty())
    return false;
  else
  {
    msg_m = constr.back();
    // in case the constraints were renamed, the name in the message may be out of date
    const_cast<moveit_msgs::Constraints*>(static_cast<const moveit_msgs::Constraints*>(msg_m.get()))->name = name;
    return true;
  }
}

void moveit_warehouse::ConstraintsStorage::renameConstraints(const std::string &old_name, const std::string &new_name, const std::string &robot, const std::string &group)
{
  mongo_ros::Query q(CONSTRAINTS_ID_NAME, old_name);
  if (!robot.empty())
    q.append(ROBOT_NAME, robot);
  if (!group.empty())
    q.append(CONSTRAINTS_GROUP_NAME, group);
  mongo_ros::Metadata m(CONSTRAINTS_ID_NAME, new_name);
  constraints_collection_->modifyMetadata(q, m);
  ROS_DEBUG("Renamed constraints from '%s' to '%s'", old_name.c_str(), new_name.c_str());
}

void moveit_warehouse::ConstraintsStorage::removeConstraints(const std::string &name, const std::string &robot, const std::string &group)
{
  mongo_ros::Query q(CONSTRAINTS_ID_NAME, name);
  if (!robot.empty())
    q.append(ROBOT_NAME, robot);
  if (!group.empty())
    q.append(CONSTRAINTS_GROUP_NAME, group);
  unsigned int rem = constraints_collection_->removeMessages(q);
  ROS_DEBUG("Removed %u Constraints messages (named '%s')", rem, name.c_str());
}