Line data    Source code

       1             : //# State.h: application state for CASAtools python module
       2             : //# Copyright (C) 2017
       3             : //# Associated Universities, Inc. Washington DC, USA.
       4             : //#
       5             : //# This library is free software; you can redistribute it and/or modify it
       6             : //# under the terms of the GNU Library General Public License as published by
       7             : //# the Free Software Foundation; either version 2 of the License, or (at your
       8             : //# option) any later version.
       9             : //#
      10             : //# This library is distributed in the hope that it will be useful, but WITHOUT
      11             : //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
      12             : //# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
      13             : //# License for more details.
      14             : //#
      15             : //# You should have received a copy of the GNU Library General Public License
      16             : //# along with this library; if not, write to the Free Software Foundation,
      17             : //# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
      18             : //#
      19             : //# Correspondence concerning AIPS++ should be addressed as follows:
      20             : //#        Internet email: casa-feedback@nrao.edu.
      21             : //#        Postal address: AIPS++ Project Office
      22             : //#                        National Radio Astronomy Observatory
      23             : //#                        520 Edgemont Road
      24             : //#                        Charlottesville, VA 22903-2475 USA
      25             : //#
      26             : #ifndef CASATOOLS_CONFIG_STATE_H
      27             : #define CASATOOLS_CONFIG_STATE_H
      28             : #include <sys/stat.h>
      29             : #include <list>
      30             : #include <mutex>
      31             : #include <string>
      32             : #include <vector>
      33             : #include <memory>
      34             : #include <algorithm>
      35             : #include <limits.h>
      36             : #include <stdlib.h>
      37             : #include <casacore/casa/System/AppState.h>
      38             : #include <casatools/Proc/Registrar.h>
      39             : 
      40             : namespace casatools {   /** namespace for CASAtools classes within "CASA code" **/
      41             : 
      42             :     class State: public casacore::AppState {
      43             :       public:
      44             : 
      45           0 :         State( ) { }
      46             : 
      47           0 :         virtual bool initialized( ) const {
      48           0 :             return true;
      49             :         }
      50             : 
      51             :         // use the data path to find the filename...
      52             :         virtual std::string resolve(const std::string &filename) const;
      53             : 
      54           0 :         virtual std::list<std::string> dataPath( ) const {
      55           0 :             return data_path;
      56             :         }
      57             : 
      58             :         // get directory containing IERS measures data
      59             :         // an exception is thrown if it does not exist or
      60             :         // does not contain the IERS tables
      61             :         //   * should contain IERS tables
      62           0 :         std::string measuresDir( ) const {
      63           0 :             return distro_data_path;
      64             :         }
      65             : 
      66           0 :         virtual std::string pythonPath( ) const {
      67           0 :             return python_path;
      68             :         }
      69             : 
      70             :         //   * should contain viewer colormap tables
      71             :         //   * should contain IERS tables
      72           0 :         virtual std::string distroDataPath( ) const {
      73           0 :             return distro_data_path;
      74             :         }
      75             : 
      76           0 :         virtual std::string logPath( ) const {
      77           0 :             return log_path;
      78             :         }
      79             : 
      80           0 :         virtual bool noGui( ) const {
      81           0 :             return no_gui;
      82             :         }
      83             : 
      84           0 :         virtual bool agg( ) const {
      85           0 :             return do_agg;
      86             :         }
      87             : 
      88           0 :         virtual bool pipeline( ) const {
      89           0 :             return do_pipeline;
      90             :         }
      91             : 
      92           0 :         virtual std::string cachedir( ) const {
      93           0 :           return cache_dir;
      94             :         }
      95             : 
      96             :         void clearDataPath( ) {
      97             :             // protect critical section...
      98             :             std::lock_guard<std::mutex> guard(data_path_mutex);
      99             :             data_path.clear( );
     100             :         }
     101             : 
     102             :         void setDataPath(const std::vector<std::string> &new_list) {
     103             :             std::list<std::string> existing_paths;
     104             :             struct stat s;
     105             : 
     106             :             // accept only strings that are the path to a directory
     107             :             std::copy_if( new_list.begin( ), new_list.end( ), std::back_inserter(existing_paths),
     108             :                           [&s]( std::string d ) {
     109             :                               return (stat(d.c_str( ),&s) == 0)  && (s.st_mode & S_IFDIR);
     110             :                           } );
     111             : 
     112             :             // protect critical section...
     113             :             std::lock_guard<std::mutex> guard(data_path_mutex);
     114             : 
     115             :             // always clear the existing path
     116             :             data_path.clear( );
     117             : 
     118             :             // convert the paths to fully qualified paths
     119             :             std::transform( existing_paths.begin( ), existing_paths.end( ),
     120             :                             std::back_inserter( data_path ),
     121             :                             [ ]( const std::string &f ) {
     122             :                                 char *expanded = realpath(f.c_str( ), NULL);
     123             :                                 std::string result( expanded ? expanded : "" );
     124             :                                 free(expanded);
     125             :                                 return result;
     126             :                             } );
     127             :         }
     128             : 
     129             :         void setPythonPath(const std::string &pypath) {
     130             :             // protect critical section...
     131             :             std::lock_guard<std::mutex> guard(data_path_mutex);
     132             :             python_path = pypath;
     133             :         }
     134             : 
     135             :         void setDistroDataPath(const std::string &path) {
     136             :             // protect critical section...
     137             :             std::lock_guard<std::mutex> guard(data_path_mutex);
     138             :             distro_data_path = path;
     139             :         }
     140             : 
     141             :         void setLogPath(const std::string &logpath) {
     142             :             // protect critical section...
     143             :             std::lock_guard<std::mutex> guard(data_path_mutex);
     144             :             log_path = logpath;
     145             :         }
     146             : 
     147             :         void setNoGui(bool nogui) {
     148             :             // protect critical section...
     149             :             std::lock_guard<std::mutex> guard(data_path_mutex);
     150             :             no_gui = nogui;
     151             :         }
     152             : 
     153             :         void setAgg(bool agg) {
     154             :             // protect critical section...
     155             :             std::lock_guard<std::mutex> guard(data_path_mutex);
     156             :             do_agg = agg;
     157             :         }
     158             : 
     159             :         void setPipeline(bool pipeline) {
     160             :             // protect critical section...
     161             :             std::lock_guard<std::mutex> guard(data_path_mutex);
     162             :             do_pipeline = pipeline;
     163             :         }
     164             : 
     165             :         void setCachedir(const std::string &cacheDir) {
     166             :           // protect critical section...
     167             :           std::lock_guard<std::mutex> guard(data_path_mutex);
     168             :           cache_dir = cacheDir;
     169             :         }
     170             : 
     171             :         // get map of registrations
     172             :         std::list<ServiceId> services( ) { return registrar.services( ); }
     173             :         // returns true if a registration for 'id' was found
     174             :         bool removeService( std::string id ) { return registrar.remove(id); }
     175             :         // returns assigned identifier (likely based upon the proposed_id)
     176             :         ServiceId addService( std::string proposed_id, std::string uri, const std::list<std::string> &types ) {
     177             :             return registrar.add(ServiceId(proposed_id, uri, types));
     178             :         }
     179             :         ServiceId addService( const ServiceId &new_service ) {
     180             :             return registrar.add(new_service);
     181             :         }
     182             :         
     183             : 
     184             :         std::string registryURI( ) {
     185             :             return registrar.uri( );
     186             :         }
     187             : 
     188             :         // do any necessary shutdown functions,
     189             :         void shutdown( );
     190             :         
     191             :       private:
     192             :         std::mutex data_path_mutex;
     193             :         std::list<std::string> data_path;
     194             :         std::string python_path;
     195             :         std::string log_path;
     196             :         std::string distro_data_path;                   // path to data as provide by casadata pkg
     197             :         std::string measures_dir;
     198             :         bool no_gui, do_agg, do_pipeline;
     199             :         std::string cache_dir;
     200             :         Registrar registrar;
     201             :     };
     202             : 
     203             :     extern State &get_state( );
     204             : 
     205             : }
     206             : 
     207             : 
     208             : #endif