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22 * @file sensor/sensor_util_lib.c
23 * @brief senor utilities
24 * @author Omar Tarabai
27 #ifndef GNUNET_SENSOR_UTIL_LIB_H
28 #define GNUNET_SENSOR_UTIL_LIB_H
33 #if 0 /* keep Emacsens' auto-indent happy */
39 * Structure containing sensor definition
41 struct GNUNET_SENSOR_SensorInfo
45 * The configuration handle
46 * carrying sensor information
48 struct GNUNET_CONFIGURATION_Handle *cfg;
56 * Path to definition file
61 * First part of version number
63 uint16_t version_major;
66 * Second part of version number
68 uint16_t version_minor;
76 * Sensor currently enabled
81 * Category under which the sensor falls (e.g. tcp, datastore)
86 * When does the sensor become active
88 struct GNUNET_TIME_Absolute *start_time;
91 * When does the sensor expire
93 struct GNUNET_TIME_Absolute *end_time;
96 * Time interval to collect sensor information (e.g. every 1 min)
98 struct GNUNET_TIME_Relative interval;
101 * Lifetime of an information sample after which it is deleted from storage
102 * If not supplied, will default to the interval value
104 struct GNUNET_TIME_Relative lifetime;
107 * A set of required peer capabilities for the sensor to collect meaningful information (e.g. ipv6)
112 * Either "gnunet-statistics" or external "process"
117 * Name of the GNUnet service that is the source for the gnunet-statistics entry
119 char *gnunet_stat_service;
122 * Name of the gnunet-statistics entry
124 char *gnunet_stat_name;
127 * Handle to statistics get request (OR GNUNET_SCHEDULER_NO_TASK)
129 struct GNUNET_STATISTICS_GetHandle *gnunet_stat_get_handle;
132 * Name of the external process to be executed
137 * Arguments to be passed to the external process
142 * Handle to the external process
144 struct GNUNET_OS_CommandHandle *ext_cmd;
147 * Did we already receive a value
148 * from the currently running external
149 * proccess ? #GNUNET_YES / #GNUNET_NO
151 int ext_cmd_value_received;
154 * The output datatype to be expected
156 char *expected_datatype;
159 * Peer-identity of peer running collection point
161 struct GNUNET_PeerIdentity *collection_point;
164 * Time interval to send sensor information to collection point (e.g. every 30 mins)
166 struct GNUNET_TIME_Relative collection_interval;
169 * Flag specifying if value is to be communicated to the p2p network
174 * Time interval to communicate value to the p2p network
176 struct GNUNET_TIME_Relative p2p_interval;
179 * Execution task (OR GNUNET_SCHEDULER_NO_TASK)
181 GNUNET_SCHEDULER_TaskIdentifier execution_task;
184 * Is the sensor being executed
190 GNUNET_NETWORK_STRUCT_BEGIN
192 * Used to communicate sensor readings to
193 * collection points (SENSORDASHBAORD service)
195 struct GNUNET_SENSOR_ReadingMessage
199 * GNUNET general message header
201 struct GNUNET_MessageHeader header;
204 * Size of the sensor name value, allocated
205 * at position 0 after this struct
207 uint16_t sensorname_size;
210 * First part of sensor version number
212 uint16_t sensorversion_major;
215 * Second part of sensor version number
217 uint16_t sensorversion_minor;
220 * Timestamp of recorded reading
225 * Size of reading value, allocation
226 * at poistion 1 after this struct
233 * Used to communicate brief information about a sensor.
235 struct GNUNET_SENSOR_SensorBriefMessage
239 * GNUNET general message header.
241 struct GNUNET_MessageHeader header;
244 * Size of sensor name string, allocated at position 0 after this struct.
249 * First part of sensor version number
251 uint16_t version_major;
254 * Second part of sensor version number
256 uint16_t version_minor;
261 * Used to communicate full information about a sensor.
263 struct GNUNET_SENSOR_SensorFullMessage
267 * GNUNET general message header.
269 struct GNUNET_MessageHeader header;
272 * Size of sensor name.
273 * Name allocated at position 0 after this struct.
275 uint16_t sensorname_size;
278 * Size of the sensor definition file carrying full sensor information.
279 * The file content allocated at position 1 after this struct.
281 uint16_t sensorfile_size;
284 * Name of the file (usually script) associated with this sensor.
285 * At the moment we only support having one file per sensor.
286 * The file name is allocated at position 2 after this struct.
288 uint16_t scriptname_size;
291 * Size of the file (usually script) associated with this sensor.
292 * The file content is allocated at position 3 after this struct.
294 uint16_t scriptfile_size;
298 GNUNET_NETWORK_STRUCT_END
300 * Given two version numbers as major and minor, compare them.
302 * @param v1_major First part of first version number
303 * @param v1_minor Second part of first version number
304 * @param v2_major First part of second version number
305 * @param v2_minor Second part of second version number
308 GNUNET_SENSOR_version_compare (uint16_t v1_major, uint16_t v1_minor,
309 uint16_t v2_major, uint16_t v2_minor);
313 * Reads sensor definitions from local data files
315 * @return a multihashmap of loaded sensors
317 struct GNUNET_CONTAINER_MultiHashMap *
318 GNUNET_SENSOR_load_all_sensors ();
322 * Get path to the directory containing the sensor definition files
324 * @return sensor files directory string
327 GNUNET_SENSOR_get_sensor_dir ();
331 * Destroys a group of sensors in a hashmap and the hashmap itself
333 * @param sensors hashmap containing the sensors
336 GNUNET_SENSOR_destroy_sensors (struct GNUNET_CONTAINER_MultiHashMap *sensors);
338 #if 0 /* keep Emacsens' auto-indent happy */
345 /* ifndef GNUNET_SENSOR_UTIL_LIB_H */
347 /* end of gnunet_sensor_util_lib.h */