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https://github.com/nasa/trick.git
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393 lines
11 KiB
C++
393 lines
11 KiB
C++
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#include <string.h>
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#include <iostream>
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#include <sstream>
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#include <stdlib.h>
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#include <udunits2.h>
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#include "trick/VariableServerSession.hh"
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#include "trick/variable_server_message_types.h"
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#include "trick/memorymanager_c_intf.h"
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#include "trick/exec_proto.h"
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#include "trick/command_line_protos.h"
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#include "trick/message_proto.h"
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#include "trick/message_type.h"
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#include "trick/TrickConstant.hh"
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#include "trick/sie_c_intf.h"
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#include "trick/UdUnits.hh"
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#include "trick/map_trick_units_to_udunits.hh"
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int Trick::VariableServerSession::var_add(std::string in_name) {
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VariableReference * new_var;
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if (in_name == "time") {
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new_var = new VariableReference(in_name, &_time);
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} else {
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new_var = new VariableReference(in_name);
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}
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_session_variables.push_back(new_var) ;
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return(0) ;
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}
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int Trick::VariableServerSession::var_add(std::string var_name, std::string units_name) {
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var_add(var_name) ;
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var_units(var_name, units_name) ;
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return(0) ;
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}
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// Helper function for var_send_once
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std::vector<std::string> split (const std::string& str, const char delim) {
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std::stringstream ss(str);
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std::string s;
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std::vector<std::string> ret;
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while (std::getline(ss, s, delim)) {
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ret.push_back(s);
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}
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return ret;
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}
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int Trick::VariableServerSession::var_send_once(std::string in_name, int num_vars) {
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std::vector<std::string> var_names = split(in_name, ',');
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if (var_names.size() != num_vars) {
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message_publish(MSG_ERROR, "Number of variables sent to var_send_once (%d) does not match num_vars (%d).\n", var_names.size(), num_vars);
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return -1;
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}
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std::vector<VariableReference *> given_vars;
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for (auto& varName : var_names) {
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VariableReference * new_var;
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if (varName == "time") {
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new_var = new VariableReference(varName, &_time);
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} else {
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new_var = new VariableReference(varName);
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}
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given_vars.push_back(new_var);
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}
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copy_sim_data(given_vars, false);
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write_data(given_vars, VS_SEND_ONCE);
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return(0) ;
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}
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int Trick::VariableServerSession::var_remove(std::string in_name) {
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for (unsigned int ii = 0 ; ii < _session_variables.size() ; ii++ ) {
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std::string var_name = _session_variables[ii]->getName();
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if ( ! var_name.compare(in_name) ) {
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delete _session_variables[ii];
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_session_variables.erase(_session_variables.begin() + ii) ;
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break ;
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}
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}
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return(0) ;
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}
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int Trick::VariableServerSession::var_units(std::string var_name, std::string units_name) {
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VariableReference * variable = find_session_variable(var_name);
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if (variable == NULL) {
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// TODO: ERROR LOGGER HERE
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return -1;
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}
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return variable->setRequestedUnits(units_name);
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}
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int Trick::VariableServerSession::var_exists(std::string in_name) {
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char buf1[5] ;
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bool error = false ;
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unsigned int msg_type ;
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REF2* var_ref = ref_attributes(in_name.c_str());
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if ( var_ref == (REF2*)NULL ) {
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error = true;
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}
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if (_binary_data) {
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/* send binary 1 or 0 */
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msg_type = VS_VAR_EXISTS ;
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memcpy(buf1, &msg_type , sizeof(msg_type)) ;
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buf1[4] = (error==false);
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if (_debug >= 2) {
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message_publish(MSG_DEBUG, "%p tag=<%s> var_server sending 1 binary byte\n", _connection, _connection->getClientTag().c_str());
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}
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_connection->write(buf1, 5);
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} else {
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/* send ascii "1" or "0" */
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sprintf(buf1, "%d\t%d\n", VS_VAR_EXISTS, (error==false));
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if (_debug >= 2) {
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message_publish(MSG_DEBUG, "%p tag=<%s> var_server sending:\n%s\n", _connection, _connection->getClientTag().c_str(), buf1) ;
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}
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std::string write_string(buf1);
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if (write_string.length() != strlen(buf1)) {
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std::cout << "PROBLEM WITH STRING LENGTH: VAR_EXISTS ASCII" << std::endl;
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}
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_connection->write(write_string);
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}
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return(0) ;
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}
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int Trick::VariableServerSession::var_clear() {
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while( !_session_variables.empty() ) {
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delete _session_variables.back();
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_session_variables.pop_back();
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}
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return(0) ;
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}
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int Trick::VariableServerSession::var_send() {
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copy_sim_data();
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write_data();
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return(0) ;
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}
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int Trick::VariableServerSession::var_cycle(double in_rate) {
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_update_rate = in_rate ;
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_cycle_tics = (long long)(_update_rate * exec_get_time_tic_value()) ;
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return(0) ;
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}
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int Trick::VariableServerSession::var_exit() {
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_exit_cmd = true ;
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return(0) ;
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}
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int Trick::VariableServerSession::var_validate_address(bool on_off) {
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_validate_address = on_off ;
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return(0) ;
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}
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int Trick::VariableServerSession::var_debug(int level) {
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_debug = level ;
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return(0) ;
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}
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int Trick::VariableServerSession::var_ascii() {
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_binary_data = 0 ;
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return(0) ;
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}
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int Trick::VariableServerSession::var_binary() {
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_binary_data = 1 ;
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return(0) ;
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}
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int Trick::VariableServerSession::var_binary_nonames() {
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_binary_data = 1 ;
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_binary_data_nonames = 1 ;
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return(0) ;
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}
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int Trick::VariableServerSession::var_set_copy_mode(int mode) {
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if ( mode >= VS_COPY_ASYNC and mode <= VS_COPY_TOP_OF_FRAME ) {
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_copy_mode = (VS_COPY_MODE)mode ;
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if ( _copy_mode == VS_COPY_SCHEDULED ) {
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long long sim_time_tics ;
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sim_time_tics = exec_get_time_tics() ;
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// round the next call time to a multiple of the cycle
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sim_time_tics -= sim_time_tics % _cycle_tics ;
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_next_tics = sim_time_tics + _cycle_tics ;
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sim_time_tics = exec_get_freeze_time_tics() ;
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// round the next call time to a multiple of the cycle
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sim_time_tics -= sim_time_tics % _cycle_tics ;
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_freeze_next_tics = sim_time_tics + _cycle_tics ;
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} else {
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_next_tics = TRICK_MAX_LONG_LONG ;
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}
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return 0 ;
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}
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return -1 ;
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}
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int Trick::VariableServerSession::var_set_write_mode(int mode) {
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if ( mode >= VS_WRITE_ASYNC and mode <= VS_WRITE_WHEN_COPIED ) {
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_write_mode = (VS_WRITE_MODE)mode ;
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return 0 ;
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}
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return -1 ;
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}
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int Trick::VariableServerSession::var_sync(int mode) {
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switch (mode) {
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case 1:
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var_set_copy_mode(VS_COPY_SCHEDULED) ;
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var_set_write_mode(VS_WRITE_ASYNC) ;
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break ;
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case 2:
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var_set_copy_mode(VS_COPY_SCHEDULED) ;
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var_set_write_mode(VS_WRITE_WHEN_COPIED) ;
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break ;
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case 0:
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default:
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var_set_copy_mode(VS_COPY_ASYNC) ;
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var_set_write_mode(VS_WRITE_ASYNC) ;
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break ;
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}
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return 0 ;
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}
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int Trick::VariableServerSession::var_set_frame_multiple(unsigned int mult) {
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_frame_multiple = mult ;
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return 0 ;
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}
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int Trick::VariableServerSession::var_set_frame_offset(unsigned int offset) {
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_frame_offset = offset ;
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return 0 ;
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}
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int Trick::VariableServerSession::var_set_freeze_frame_multiple(unsigned int mult) {
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_freeze_frame_multiple = mult ;
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return 0 ;
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}
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int Trick::VariableServerSession::var_set_freeze_frame_offset(unsigned int offset) {
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_freeze_frame_offset = offset ;
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return 0 ;
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}
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int Trick::VariableServerSession::var_byteswap(bool on_off) {
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_byteswap = on_off ;
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return(0) ;
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}
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bool Trick::VariableServerSession::get_send_stdio() {
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return _send_stdio ;
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}
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int Trick::VariableServerSession::set_send_stdio(bool on_off) {
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_send_stdio = on_off ;
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return(0) ;
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}
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int Trick::VariableServerSession::send_list_size() {
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unsigned int msg_type = VS_LIST_SIZE;
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int var_count = _session_variables.size();
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// send number of variables
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if (_binary_data) {
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// send in the binary message header format:
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// <message_indicator><message_size><number_of_variables>
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char buf1[12] ;
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unsigned int msg_type = VS_LIST_SIZE;
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memcpy(buf1, &msg_type , sizeof(msg_type)) ;
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memset(&(buf1[4]), 0, sizeof(int)); // message size = 0
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memcpy(&(buf1[8]), &var_count, sizeof(var_count));
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if (_debug >= 2) {
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message_publish(MSG_DEBUG, "%p tag=<%s> var_server sending %d event variables\n", _connection, _connection->getClientTag().c_str(), var_count);
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}
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_connection->write(buf1, sizeof (buf1));
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} else {
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std::stringstream write_string;
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write_string << VS_LIST_SIZE << "\t" << var_count << "\n";
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// ascii
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if (_debug >= 2) {
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message_publish(MSG_DEBUG, "%p tag=<%s> var_server sending number of event variables:\n%s\n", _connection, _connection->getClientTag().c_str(), write_string.str().c_str()) ;
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}
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_connection->write(write_string.str());
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}
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return 0 ;
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}
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int Trick::VariableServerSession::transmit_file(std::string filename) {
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const unsigned int packet_size = 4095 ;
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FILE * fp ;
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unsigned int file_size ;
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unsigned int current_size = 0 ;
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unsigned int bytes_read ;
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char buffer[packet_size+1] ;
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int ret ;
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if (_debug >= 2) {
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message_publish(MSG_DEBUG,"%p tag=<%s> var_server opening %s.\n", _connection, _connection->getClientTag().c_str(), filename.c_str()) ;
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}
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if ((fp = fopen(filename.c_str() , "r")) == NULL ) {
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message_publish(MSG_ERROR,"Variable Server Error: Cannot open %s.\n", filename.c_str()) ;
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sprintf(buffer, "%d\t-1\n", VS_SIE_RESOURCE) ;
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std::string message(buffer);
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_connection->write(message);
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return(-1) ;
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}
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fseek(fp , 0L, SEEK_END) ;
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file_size = ftell(fp) ;
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sprintf(buffer, "%d\t%u\n\0" , VS_SIE_RESOURCE, file_size) ;
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std::string message(buffer);
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_connection->write(message);
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rewind(fp) ;
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// Switch to blocking writes since this could be a large transfer.
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if (_connection->setBlockMode(true)) {
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message_publish(MSG_DEBUG,"Variable Server Error: Failed to set socket to blocking mode.\n");
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}
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while ( current_size < file_size ) {
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bytes_read = fread(buffer , 1 , packet_size , fp) ;
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message = std::string(buffer);
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message.resize(bytes_read);
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ret = _connection->write(message);
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if (ret != (int)bytes_read) {
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message_publish(MSG_ERROR,"Variable Server Error: Failed to send file. Bytes read: %d Bytes sent: %d\n", bytes_read, ret) ;
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return(-1);
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}
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current_size += bytes_read ;
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}
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// Switch back to non-blocking writes.
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if (_connection->setBlockMode(false)) {
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message_publish(MSG_DEBUG,"Variable Server Error: Failed to set socket to non-blocking mode.\n");
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return(-1);
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}
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return(0) ;
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}
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int Trick::VariableServerSession::send_file(std::string file_name) {
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return transmit_file(file_name) ;
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}
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int Trick::VariableServerSession::send_sie_resource() {
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sie_append_runtime_objs() ;
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return transmit_file(std::string(command_line_args_get_default_dir()) + "/S_sie.resource") ;
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}
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int Trick::VariableServerSession::send_sie_class() {
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sie_class_attr_map_print_xml() ;
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return transmit_file(std::string(command_line_args_get_default_dir()) + "/" + "S_sie_class.xml") ;
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}
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int Trick::VariableServerSession::send_sie_enum() {
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sie_enum_attr_map_print_xml() ;
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return transmit_file(std::string(command_line_args_get_default_dir()) + "/" + "S_sie_enum.xml") ;
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}
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int Trick::VariableServerSession::send_sie_top_level_objects() {
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sie_top_level_objects_print_xml() ;
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return transmit_file(std::string(command_line_args_get_default_dir()) + "/" + "S_sie_top_level_objects.xml") ;
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}
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