src/W1DataList.cc

   1 /*
   2  * W1DataList.cc
   3  *
   4  *  Created on: Nov 7, 2010
   5  *      Author: lamikr
   6  */
   7 #include <dirent.h>
   8 #include <malloc.h>
   9 #include <errno.h>
  10 #include <string.h>
  11
  12 #include "W1Util.hh"
  13 #include "W1DataList.hh"
  14 #include "W1Store.hh"
  15
  16 #include "plp/log.h"
  17
  18 using namespace w1;
  19 using namespace std;
  20 using namespace plp;
  21
  22 W1DataList::W1DataList(string device_id_param) {
  23         string          base_dir;
  24
  25         device_id       = device_id_param;
  26         base_dir        = W1Store::get_base_dir_name();
  27         device_dir      = W1Util::concat_paths(base_dir, device_id);
  28         device_ch_dir   = W1Util::concat_paths(base_dir, "cache");
  29         device_ch_dir   = W1Util::concat_paths(device_ch_dir, device_id);
  30 }
  31
  32 W1DataList::~W1DataList() {
  33         //delete(device_dir);
  34 }
  35
  36 Data *W1DataList::find_oldest_data(vector<string> year_vector) {
  37         int             ii;
  38         string          year_dir;
  39         string          month_dir;
  40         vector<string>  month_vector;
  41         vector<string>  data_vector;
  42         string          f_name;
  43         W1Store         *store;
  44         Data            *ret_val;
  45
  46         ret_val = NULL;
  47         if (year_vector.size() > 0) {
  48                 // dirs are alphabetically sorted
  49                 year_dir        = year_vector.at(0);
  50                 year_dir        = W1Util::concat_paths(device_dir, year_dir);
  51                 month_vector    = W1Util::get_subdirectories(year_dir);
  52                 for (ii = 0; ii < month_vector.size(); ii++) {
  53                         month_dir       = month_vector.at(ii);
  54                         month_dir       = W1Util::concat_paths(year_dir, month_dir);
  55                         // scan data files from month dir
  56                         data_vector     = W1Util::get_data_files(month_dir);
  57                         if (data_vector.size() > 0) {
  58                                 f_name  = data_vector.at(0);
  59                                 f_name  = W1Util::concat_paths(month_dir, f_name);
  60                                 store   = new W1Store(f_name);
  61                                 ret_val = store->get_oldest_data();
  62                                 delete(store);
  63                                 break;
  64                         }
  65                 }
  66         }
  67         return ret_val;
  68 }
  69
  70 Data *W1DataList::find_newest_data(vector<string> year_vector) {
  71         int             ii;
  72         string          year_dir;
  73         string          month_dir;
  74         vector<string>  month_vector;
  75         vector<string>  data_vector;
  76         string          f_name;
  77         Data            *ret_val;
  78         int             size;
  79         W1Store         *store;
  80
  81         ret_val = NULL;
  82         size    = year_vector.size();
  83         if (size > 0) {
  84                 // dirs are alphabetically sorted
  85                 year_dir        = year_vector.at(size - 1);
  86                 year_dir        = W1Util::concat_paths(device_dir, year_dir);
  87                 month_vector    = W1Util::get_subdirectories(year_dir);
  88                 for (ii = month_vector.size() - 1; ii >= 0; ii--) {
  89                         month_dir       = month_vector.at(ii);
  90                         month_dir       = W1Util::concat_paths(year_dir, month_dir);
  91                         // scan data files from month dir
  92                         data_vector     = W1Util::get_data_files(month_dir);
  93                         size    = data_vector.size();
  94                         if (size > 0) {
  95                                 f_name  = data_vector.at(size - 1);
  96                                 f_name  = W1Util::concat_paths(month_dir, f_name);
  97                                 store   = new W1Store(f_name);
  98                                 ret_val = store->get_newest_data();
  99                                 delete(store);
 100                                 break;
 101                         }
 102                 }
 103         }
 104         return ret_val;
 105 }
 106
 107 DataRange *W1DataList::get_data_range() {
 108         DataRange       *ret_val;
 109         DIR             *data_dir;
 110         struct dirent   *year_dirent;
 111         vector<string>  year_list;
 112         Data            *first_data;
 113         Data            *newest_data;
 114
 115         ret_val         = NULL;
 116         year_list       = W1Util::get_subdirectories(device_dir);
 117         first_data      = find_oldest_data(year_list);
 118         if (first_data != NULL) {
 119                 newest_data     = find_newest_data(year_list);
 120                 if (newest_data != NULL) {
 121                         ret_val = new DataRange(*first_data);
 122                         ret_val->add_data(*newest_data);
 123                         delete(newest_data);
 124                 }
 125                 delete(first_data);
 126         }
 127         return ret_val;
 128 }
 129
 130 long int get_interval_type(Date *start_date,
 131                         Date *end_date) {
 132         int     diff;
 133         int     ret_val;
 134
 135         ret_val = 0;
 136         diff    = end_date->year - start_date->year;
 137         if (diff != 0) {
 138                 ret_val = 0;
 139         }
 140         else {
 141                 diff    = end_date->month - start_date->month;
 142                 if (diff != 0) {
 143                         ret_val = 1;
 144                 }
 145                 else {
 146                         diff    = end_date->day - start_date->day;
 147                         if (diff != 0) {
 148                                 ret_val = 2;
 149                         }
 150                         else {
 151                                 diff    = end_date->hour - start_date->hour;
 152                                 if (diff != 0) {
 153                                         ret_val = 3;
 154                                 }
 155                                 else {
 156                                         diff    = end_date->min - start_date->min;
 157                                         if (diff != 0) {
 158                                                 ret_val = 4;
 159                                         }
 160                                         else {
 161                                                 ret_val = 5;
 162                                         }
 163                                 }
 164                         }
 165                 }
 166         }
 167         return ret_val;
 168 }
 169
 170 Data *W1DataList::get_daily_summary(Date *date) {
 171         Data    *data;
 172         W1Store *store;
 173
 174         store   = new W1Store(device_id, date);
 175         store->load();
 176         data    = store->get_mean();
 177         data->printout();
 178         delete(store);
 179
 180         return data;
 181 }
 182
 183 DataRange *W1DataList::get_daily_summary(Date *start_date,
 184                                         Date *end_date) {
 185         DataRange       *ret_val;
 186         Data            *data;
 187         Date            *date;
 188
 189         ret_val = NULL;
 190         date    = start_date->clone();
 191         while(date->before(*end_date)) {
 192                 data    = get_daily_summary(date);
 193                 if (ret_val == NULL) {
 194                         ret_val = new DataRange(*data);
 195                 }
 196                 else {
 197                         ret_val->add_data(*data);
 198                 }
 199                 delete(data);
 200                 date->tomorrow();
 201         }
 202         delete(date);
 203         return ret_val;
 204 }
 205
 206 DataRange *W1DataList::get_data(Date *start_date,
 207                                 Date *end_date) {
 208         DataRange       *ret_val;
 209         int             int_type;
 210
 211         ret_val         = NULL;
 212         start_date->printout();
 213         end_date->printout();
 214         int_type        = get_interval_type(start_date, end_date);
 215         switch(int_type) {
 216                 case 0:
 217                         log_debug("get yearly summary\n");
 218                         break;
 219                 case 1:
 220                         log_debug("get monthly summary\n");
 221                         break;
 222                 case 2:
 223                         log_debug("get daily summary\n");
 224                         ret_val = get_daily_summary(start_date, end_date);
 225                         break;
 226                 case 3:
 227                         log_debug("get hourly summary\n");
 228                         break;
 229                 case 4:
 230                         log_debug("get minute summary data\n");
 231                         break;
 232                 case 5:
 233                         log_debug("get second summary data\n");
 234                         break;
 235         }
 236         return ret_val;
 237 }