agent.cc

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// Implements the Agent Class
#include "agent.h"
 
#include <algorithm>
#include <iostream>
#include <sstream>
#include <string>
 
#include "context.h"
#include "error.h"
#include "logger.h"
#include "resource.h"
 
namespace cyclus {
 
// static members
int Agent::next_id_ = 0;
 
void Agent::InitFrom(Agent* m) {
  prototype_ = m->prototype_;
  kind_ = m->kind_;
  spec_ = m->spec_;
  lifetime_ = m->lifetime_;
  ctx_ = m->ctx_;
}
 
std::string Agent::InformErrorMsg(std::string msg) {
  std::stringstream ret;
  ret << "A(n) " << spec_ << " named " << prototype_ << " at time "
      << context()->time() << " received the following error:\n"
      << msg;
  return ret.str();
}
 
void Agent::InfileToDb(InfileTree* qe, DbInit di) {
  std::string proto = qe->GetString("name");
  int lifetime = OptionalQuery<int>(qe, "lifetime", -1);
  di.NewDatum("Agent")
      ->AddVal("Prototype", proto)
      ->AddVal("Lifetime", lifetime)
      ->Record();
}
 
void Agent::InitFrom(QueryableBackend* b) {
  QueryResult qr = b->Query("Agent", NULL);
  prototype_ = qr.GetVal<std::string>("Prototype");
  id_ = qr.GetVal<int>("AgentId");
  lifetime_ = qr.GetVal<int>("Lifetime");
}
 
void Agent::Snapshot(DbInit di) {
  di.NewDatum("Agent")
      ->AddVal("Prototype", prototype_)
      ->AddVal("Lifetime", lifetime_)
      ->Record();
}
 
Agent::Agent(Context* ctx)
    : ctx_(ctx),
      id_(next_id_++),
      kind_("Agent"),
      parent_id_(-1),
      enter_time_(-1),
      lifetime_(-1),
      parent_(NULL),
      spec_("UNSPECIFIED") {
  ctx_->agent_list_.insert(this);
  MLOG(LEV_DEBUG3) << "Agent ID=" << id_ << ", ptr=" << this << " created.";
}
 
Agent::~Agent() {
  MLOG(LEV_DEBUG3) << "Deleting agent '" << prototype() << "' ID=" << id_;
  context()->agent_list_.erase(this);
 
  std::set<Agent*>::iterator it;
  if (parent_ != NULL) {
    CLOG(LEV_DEBUG2) << "Agent '" << parent_->prototype()
                     << "' ID=" << parent_->id() << " has removed child '"
                     << prototype() << "' ID=" << id()
                     << " from its list of children.";
    it = find(parent_->children_.begin(), parent_->children_.end(), this);
    if (it != parent_->children_.end()) {
      parent_->children_.erase(it);
    }
  }
 
  // set children's parents to NULL
  for (it = children_.begin(); it != children_.end(); ++it) {
    Agent* child = *it;
    child->parent_ = NULL;
    child->parent_id_ = -1;
  }
}
 
std::string Agent::str() {
  std::stringstream ss;
  ss << kind_ << "_" << prototype_ << " ( " << "ID=" << id_
     << ", implementation=" << spec_ << ",  name=" << prototype_
     << ",  parentID=" << parent_id_ << " ) ";
  return ss.str();
}
 
void Agent::lifetime(int n_timesteps) {
  if (enter_time_ != -1) {
    throw ValueError("cannot set the lifetime of an already-built facility");
  }
  lifetime_ = n_timesteps;
}
 
void Agent::lifetime_force(int n_timesteps) {
  try {
    lifetime(n_timesteps);
  } catch (ValueError e) {
    if (enter_time_ + n_timesteps <= context()->time()) {
      lifetime(context()->time() - enter_time_ + 1);
    } else {
      lifetime_ = n_timesteps;
    }
  }
}
 
bool Agent::AncestorOf(Agent* other) {
  other = other->parent();
  while (other != NULL) {
    if (this == other) return true;
    other = other->parent();
  }
  return false;
}
 
bool Agent::DecendentOf(Agent* other) {
  const std::set<Agent*>& children = other->children();
  std::set<Agent*>::const_iterator it = children.begin();
  for (; it != children.end(); ++it) {
    if (this == *(it) || this->DecendentOf(*(it))) return true;
  }
  return false;
}
 
bool Agent::InFamilyTree(Agent* other) {
  return (this == other) || AncestorOf(other) || DecendentOf(other);
}
 
void Agent::Build(Agent* parent) {
  CLOG(LEV_DEBUG1) << "Agent '" << prototype()
                   << "' is entering the simulation.";
  CLOG(LEV_DEBUG3) << "It has:";
  CLOG(LEV_DEBUG3) << " * Spec: " << spec_;
  CLOG(LEV_DEBUG3) << " * ID: " << id();
 
  Connect(parent);
  enter_time_ = ctx_->time();
  EnterNotify();
  this->AddToTable();
}
 
void Agent::EnterNotify() {
  ctx_->RegisterAgent(this);
}
 
void Agent::Connect(Agent* parent) {
  if (parent == this) {
    throw KeyError("Agent " + prototype() +
                   "is trying to add itself as its own child.");
  }
  if (parent != NULL) {
    parent_ = parent;
    parent_id_ = parent->id();
    parent->children_.insert(this);
  }
}
 
void Agent::Decommission() {
  CLOG(LEV_INFO3) << prototype() << "(" << this << ")"
                  << " is being decommissioned";
  ctx_->NewDatum("AgentExit")
      ->AddVal("AgentId", id())
      ->AddVal("ExitTime", ctx_->time())
      ->Record();
  ctx_->UnregisterAgent(this);
  ctx_->DelAgent(this);
}
 
std::string Agent::PrintChildren() {
  std::stringstream ss("");
  ss << "Children of " << prototype() << ":" << std::endl;
 
  std::set<Agent*>::iterator it;
  for (it = children_.begin(); it != children_.end(); ++it) {
    Agent* child = *it;
    std::vector<std::string> print_outs = GetTreePrintOuts(child);
    for (int j = 0; j < print_outs.size(); j++) {
      ss << "\t" << print_outs.at(j);
    }
  }
  return ss.str();
}
 
std::vector<std::string> Agent::GetTreePrintOuts(Agent* m) {
  std::vector<std::string> ret;
  std::stringstream ss("");
  ss << m->prototype() << std::endl;
  ret.push_back(ss.str());
  std::set<Agent*>::iterator it;
  for (it = children_.begin(); it != children_.end(); ++it) {
    Agent* child = *it;
    std::vector<std::string> outs = GetTreePrintOuts(child);
    for (int j = 0; j < outs.size(); j++) {
      ss.str("");
      ss << "\t" << outs.at(j) << std::endl;
      ret.push_back(ss.str());
    }
  }
  return ret;
}
 
void Agent::AddToTable() {
  ctx_->NewDatum("AgentEntry")
      ->AddVal("AgentId", id_)
      ->AddVal("Kind", kind_)
      ->AddVal("Spec", spec_)
      ->AddVal("Prototype", prototype_)
      ->AddVal("ParentId", parent_id_)
      ->AddVal("Lifetime", lifetime_)
      ->AddVal("EnterTime", enter_time_)
      ->Record();
}
}  // namespace cyclus