src/DeviceConfig.cc

   1 /*
   2  * DeviceConfig.cc
   3  *
   4  *  Created on: Dec 9, 2010
   5  *      Author: lamikr
   6  */
   7
   8 #include "DeviceConfig.hh"
   9
  10 #include <string.h>
  11 #include <malloc.h>
  12
  13 #include <plp/log.h>
  14 #include "W1Util.hh"
  15 #include "W1Configure.hh"
  16
  17 #include "Factory.hh"
  18
  19 using namespace std;
  20 using namespace w1;
  21
  22 string DeviceConfig::store_base_dir     = DEFAULT_STORAGE_BASE_DIR;
  23
  24 ConfigHandle::ConfigHandle(uci_context *ctx_param, uci_package *pkg_param) {
  25         ctx     = ctx_param;
  26         pkg     = pkg_param;
  27 }
  28
  29 ConfigHandle::~ConfigHandle() {
  30         uci_unload(ctx, pkg);
  31         uci_free_context(ctx);
  32 }
  33
  34 DeviceConfig::DeviceConfig(string device_id_param) {
  35         device_id       = device_id_param;
  36         uci_handle      = load_device_config(device_id_param);
  37         if (uci_handle != NULL) {
  38                 device_type     = get_cfg_value(DEVICE_CONFIG_VALUE_KEY__TYPE);
  39         }
  40         else {
  41                 log_error("Could not read device config\n");
  42         }
  43 }
  44
  45 DeviceConfig::~DeviceConfig() {
  46         if (uci_handle != NULL) {
  47                 delete(uci_handle);
  48                 uci_handle      = NULL;
  49         }
  50 }
  51
  52 void DeviceConfig::set_base_dir_name(string store_param) {
  53         int     pos;
  54         int     b_count;
  55
  56         pos     = store_param.find_last_of("/");
  57         b_count = store_param.length();
  58         if (pos == (b_count - 1)) {
  59                 store_base_dir  = store_param;
  60         }
  61         else {
  62                 store_base_dir  = store_param + "/";
  63         }
  64 }
  65
  66 string DeviceConfig::get_base_dir_name() {
  67         return store_base_dir;
  68 }
  69
  70 string DeviceConfig::get_dir_name(string device_id_param) {
  71         string  ret_val;
  72         string  d_name;
  73
  74         d_name  = DeviceConfig::get_base_dir_name();
  75         ret_val = W1Util::concat_paths(d_name, device_id_param);
  76         return ret_val;
  77 }
  78
  79 string DeviceConfig::get_file_name(string device_id_param) {
  80         string  ret_val;
  81         string  fname;
  82
  83         fname   = DEVICE_CONFIG__FILE_NAME;
  84         ret_val = get_dir_name(device_id);
  85         ret_val = W1Util::concat_paths(ret_val, fname);
  86         return ret_val;
  87 }
  88
  89 string DeviceConfig::get_cfg_value(string key) {
  90         struct uci_section      *section;
  91         struct uci_option       *option;
  92         string                  ret_val;
  93
  94         if (uci_handle != NULL) {
  95                 section = uci_lookup_section(uci_handle->ctx, uci_handle->pkg, DEVICE_CONFIG__SECTION_NAME);
  96                 if (section != NULL) {
  97                         option  = uci_lookup_option(uci_handle->ctx, section, key.c_str());
  98                         switch (option->type) {
  99                                 case UCI_TYPE_STRING:
 100                                         log_info("config file: key: %s option name: %s, value: %s\n", key.c_str(), option->e.name, option->v.string);
 101                                         ret_val = option->v.string;
 102                                         break;
 103                                 default:
 104                                         log_error("config file: key: %s can not parse parameter value\n", key.c_str());
 105                                         break;
 106                         }
 107                 }
 108         }
 109         return ret_val;
 110 }
 111
 112 void DeviceConfig::set_cfg_value(string key, string value) {
 113         string cfg_dir;
 114         string cfg_fl;
 115
 116         cfg_dir = get_dir_name(device_id);
 117         cfg_fl  = DEVICE_CONFIG__FILE_NAME;
 118         set_config_value(cfg_dir.c_str(),
 119                         cfg_fl.c_str(),
 120                         DEVICE_CONFIG__SECTION_TYPE,
 121                         DEVICE_CONFIG__SECTION_NAME,
 122                         key.c_str(),
 123                         value.c_str());
 124 }
 125
 126 enum_summary_calculation DeviceConfig::get_summary_calculation_type() {
 127         enum_summary_calculation        ret_val;
 128
 129         ret_val = MEAN;
 130         if (device_type.empty() == false) {
 131                 if (device_type.compare("counter") == 0) {
 132                         ret_val = DELTA;
 133                 }
 134         }
 135         return ret_val;;
 136 }
 137
 138 ConfigHandle *DeviceConfig::load_device_config(string device_id_param) {
 139         int                     err_flg;
 140         struct uci_context      *ctx;
 141         struct uci_package      *pkg;
 142         string                  cfg_fl;
 143         string                  cfg_dir;
 144         ConfigHandle            *ret_val;
 145
 146         ret_val = NULL;
 147         cfg_dir = get_dir_name(device_id_param);
 148         if (cfg_dir.empty() == false) {
 149                 if (access(cfg_dir.c_str(), W_OK) != 0) {
 150                         W1Util::mkdirs(cfg_dir.c_str());
 151                 }
 152                 cfg_fl  = get_file_name(device_id_param);
 153                 ctx     = uci_alloc_context();
 154                 if (ctx != NULL) {
 155                         log_debug("uci_set_confdir: %s\n", cfg_dir.c_str());
 156                         uci_set_confdir(ctx, cfg_dir.c_str());
 157                         if (access(cfg_fl.c_str(), R_OK) == 0) {
 158                                 log_debug("loading file: %s\n", cfg_fl.c_str());
 159                                 err_flg = uci_load(ctx, cfg_fl.c_str(), &pkg);
 160                                 if (err_flg == UCI_OK) {
 161                                         log_debug("Loaded device configuration: %s, UCI_OK: %d, err flg: %d\n.", cfg_fl.c_str(), UCI_OK, err_flg);
 162                                         ret_val = new ConfigHandle(ctx, pkg);
 163                                 }
 164                                 else {
 165                                         log_debug("Failed to load file: %s, UCI_OK: %d, err flg: %d\n.", cfg_fl.c_str(), UCI_OK, err_flg);
 166                                         set_cfg_value(DEVICE_CONFIG_VALUE_KEY__TYPE, "unknowntype");
 167                                 }
 168                         }
 169                         else {
 170                                 log_error("Failed to load device device configuration, file does not exit: %s.\n", cfg_fl.c_str());
 171                         }
 172                 }
 173                 else {
 174                         log_error("Failed to load device device configuration, invalid device id: %s.\n", cfg_dir.c_str());
 175                 }
 176         }
 177         return ret_val;
 178 }