* @brief sensor service implementation
* @author Omar Tarabai
*/
+#include <inttypes.h>
#include "platform.h"
#include "gnunet_util_lib.h"
#include "sensor.h"
-
-/**
- * Structure containing sensor definition
- */
-struct SensorInfo
-{
-
- /*
- * Sensor name
- */
- char *name;
-
- /*
- * Path to definition file
- */
- char *def_file;
-
- /*
- * First part of version number
- */
- uint16_t version_major;
-
- /*
- * Second part of version number
- */
- uint16_t version_minor;
-
- /*
- * Sensor description
- */
- char *description;
-
- /*
- * Category under which the sensor falls (e.g. tcp, datastore)
- */
- char *category;
-
- /*
- * When does the sensor become active
- */
- struct GNUNET_TIME_Absolute *start_time;
-
- /*
- * When does the sensor expire
- */
- struct GNUNET_TIME_Absolute *end_time;
-
- /*
- * Time interval to collect sensor information (e.g. every 1 min)
- */
- struct GNUNET_TIME_Relative *interval;
-
- /*
- * Lifetime of an information sample after which it is deleted from storage
- */
- struct GNUNET_TIME_Relative *lifetime;
-
- /*
- * A set of required peer capabilities for the sensor to collect meaningful information (e.g. ipv6)
- */
- char *capabilities;
-
- /*
- * Either "gnunet-statistics" or external "process"
- */
- char *source;
-
- /*
- * Name of the GNUnet service that is the source for the gnunet-statistics entry
- */
- char *gnunet_stat_service;
-
- /*
- * Name of the gnunet-statistics entry
- */
- char *gnunet_stat_name;
-
- /*
- * Name of the external process to be executed
- */
- char *ext_process;
-
- /*
- * Arguments to be passed to the external process
- */
- char *ext_args;
-
- /*
- * The output datatype to be expected
- */
- char *expected_datatype;
-
- /*
- * Peer-identity of peer running collection point
- */
- struct GNUNET_PeerIdentity *collection_point;
-
- /*
- * Time interval to send sensor information to collection point (e.g. every 30 mins)
- */
- struct GNUNET_TIME_Relative *collection_interval;
-
- /*
- * Flag specifying if value is to be communicated to the p2p network
- */
- int p2p_report;
-
- /*
- * Time interval to communicate value to the p2p network
- */
- struct GNUNET_TIME_Relative *p2p_interval;
-
-};
+#include "gnunet_statistics_service.h"
+#include "gnunet_peerstore_service.h"
/**
* Our configuration.
/**
* Hashmap of loaded sensor definitions
*/
-struct GNUNET_CONTAINER_MultiHashMap *sensors;
+static struct GNUNET_CONTAINER_MultiHashMap *sensors;
/**
- * Task run during shutdown.
- *
- * @param cls unused
- * @param tc unused
+ * Handle to statistics service
*/
-static void
-shutdown_task (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
-}
-
+struct GNUNET_STATISTICS_Handle *statistics;
/**
- * A client disconnected. Remove all of its data structure entries.
- *
- * @param cls closure, NULL
- * @param client identification of the client
+ * Handle to peerstore service
*/
-static void
-handle_client_disconnect (void *cls,
- struct GNUNET_SERVER_Client
- * client)
-{
-}
+struct GNUNET_PEERSTORE_Handle *peerstore;
/**
- * Parses a version number string into major and minor
- *
- * @param version full version string
- * @param major pointer to parsed major value
- * @param minor pointer to parsed minor value
- * @return #GNUNET_OK if parsing went ok, #GNUNET_SYSERROR in case of error
+ * Service name
*/
-static int
-version_parse(char *version, uint16_t *major, uint16_t *minor)
-{
- int majorval = 0;
- int minorval = 0;
-
- for(; isdigit(*version); version++)
- {
- majorval *= 10;
- majorval += *version - '0';
- }
- if(*version != '.')
- return GNUNET_SYSERR;
- version++;
- for(; isdigit(*version); version++)
- {
- minorval *= 10;
- minorval += *version - '0';
- }
- if(*version != 0)
- return GNUNET_SYSERR;
- *major = majorval;
- *minor = minorval;
-
- return GNUNET_OK;
-}
+char *subsystem = "sensor";
/**
- * Load sensor definition from configuration
- *
- * @param cfg configuration handle
- * @param sectionname configuration section containing definition
+ * My peer id
*/
-static struct SensorInfo *
-load_sensor_from_cfg(struct GNUNET_CONFIGURATION_Handle *cfg, const char *sectionname)
-{
- struct SensorInfo *sensor;
- char *versionstr;
-
- sensor = GNUNET_new(struct SensorInfo);
- //name
- sensor->name = GNUNET_strdup(sectionname);
- //version
- if(GNUNET_OK != GNUNET_CONFIGURATION_get_value_string(cfg, sectionname, "VERSION", &versionstr) ||
- NULL == versionstr)
- {
- GNUNET_log(GNUNET_ERROR_TYPE_ERROR, _("Error reading sensor version\n"));
- GNUNET_free(sensor);
- return NULL;
- }
- if(GNUNET_OK != version_parse(versionstr, &(sensor->version_major), &(sensor->version_minor)))
- {
- GNUNET_log(GNUNET_ERROR_TYPE_ERROR, _("Invalid sensor version number, format should be major.minor\n"));
- GNUNET_free(sensor);
- return NULL;
- }
- //description
- GNUNET_CONFIGURATION_get_value_string(cfg, sectionname, "DESCRIPTION", &sensor->description);
- //category
- if(GNUNET_OK != GNUNET_CONFIGURATION_get_value_string(cfg, sectionname, "CATEGORY", &sensor->category) ||
- NULL == sensor->category)
- {
- GNUNET_log(GNUNET_ERROR_TYPE_ERROR, _("Error reading sensor category\n"));
- GNUNET_free(sensor);
- return NULL;
- }
-
- return sensor;
-}
+struct GNUNET_PeerIdentity peerid;
/**
- * Load sensor definition from file
+ * Disable a sensor
+ * Sensor will not run again unless
+ * explicitly enabled or reloaded
*
- * @param filename full path to file containing sensor definition
+ * @param sensor sensor information
*/
-static struct SensorInfo *
-load_sensor_from_file(const char *filename)
+static void set_sensor_enabled(struct SensorInfo *sensor, int state)
{
- struct GNUNET_CONFIGURATION_Handle *sensorcfg;
- const char *filebasename;
- struct SensorInfo *sensor;
-
- //test file
- if(GNUNET_YES != GNUNET_DISK_file_test(filename))
- {
- GNUNET_log(GNUNET_ERROR_TYPE_ERROR, _("Failed to access sensor file: %s\n"), filename);
- return NULL;
- }
- //load file as configuration
- sensorcfg = GNUNET_CONFIGURATION_create();
- if(GNUNET_SYSERR == GNUNET_CONFIGURATION_parse(sensorcfg, filename))
- {
- GNUNET_CONFIGURATION_destroy(sensorcfg);
- GNUNET_log(GNUNET_ERROR_TYPE_ERROR, _("Failed to load sensor definition: %s\n"), filename);
- return NULL;
- }
- //configuration section should be the same as filename
- filebasename = GNUNET_STRINGS_get_short_name(filename);
- sensor = load_sensor_from_cfg(sensorcfg, filebasename);
- sensor->def_file = GNUNET_strdup(filename);
-
- GNUNET_CONFIGURATION_destroy(sensorcfg);
-
- return sensor;
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "Sensor `%s': Setting enabled to %d.\n",
+ sensor->name, state);
+ sensor->enabled = GNUNET_NO;
+ GNUNET_assert(NULL != sensor->cfg);
+ GNUNET_CONFIGURATION_set_value_string(sensor->cfg, sensor->name, "ENABLED",
+ (GNUNET_YES == state)?"YES":"NO");
+ GNUNET_CONFIGURATION_write(sensor->cfg, sensor->def_file);
}
/**
- * Compares version numbers of two sensors
- *
- * @param s1 first sensor
- * @param s2 second sensor
- * @return 1: s1 > s2, 0: s1 == s2, -1: s1 < s2
- */
-static int
-sensor_version_compare(struct SensorInfo *s1, struct SensorInfo *s2)
-{
- if(s1->version_major == s2->version_major)
- return (s1->version_minor < s2->version_minor) ? -1 : (s1->version_minor > s2->version_minor);
- else
- return (s1->version_major < s2->version_major) ? -1 : (s1->version_major > s2->version_major);
-}
-
-/**
- * Adds a new sensor to given hashmap.
- * If the same name exist, compares versions and update if old.
+ * Task run during shutdown.
*
- * @param sensor Sensor structure to add
- * @param map Hashmap to add to
- * @return #GNUNET_YES if added, #GNUNET_NO if not added which is not necessarily an error
+ * @param cls unused
+ * @param tc unused
*/
-static int
-add_sensor_to_hashmap(struct SensorInfo *sensor, struct GNUNET_CONTAINER_MultiHashMap *map)
+static void
+shutdown_task (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
{
- struct GNUNET_HashCode key;
- struct SensorInfo *existing;
-
- GNUNET_CRYPTO_hash(sensor->name, sizeof(sensor->name), &key);
- existing = GNUNET_CONTAINER_multihashmap_get(map, &key);
- if(NULL != existing) //sensor with same name already exists
- {
- if(sensor_version_compare(existing, sensor) >= 0) //same or newer version already exist
- {
- GNUNET_log(GNUNET_ERROR_TYPE_INFO, _("Sensor `%s' already exists with same or newer version\n"), sensor->name);
- return GNUNET_NO;
- }
- else
- {
- GNUNET_CONTAINER_multihashmap_remove(map, &key, existing); //remove the old version
- GNUNET_log(GNUNET_ERROR_TYPE_INFO, _("Upgrading sensor `%s' to a newer version\n"), sensor->name);
- }
- }
- if(GNUNET_SYSERR == GNUNET_CONTAINER_multihashmap_put(map, &key, sensor, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY))
+ SENSOR_reporting_stop();
+ SENSOR_analysis_stop();
+ GNUNET_SENSOR_destroy_sensors (sensors);
+ if(NULL != statistics)
{
- GNUNET_log(GNUNET_ERROR_TYPE_ERROR, _("Error adding new sensor `%s' to global hashmap, this should not happen\n"), sensor->name);
- return GNUNET_NO;
+ GNUNET_STATISTICS_destroy(statistics, GNUNET_YES);
+ statistics = NULL;
}
-
- return GNUNET_YES;
-}
-
-/**
- * Iterating over files in sensors directory
- *
- * @param cls closure
- * @param filename complete filename (absolute path)
- * @return #GNUNET_OK to continue to iterate,
- * #GNUNET_NO to stop iteration with no error,
- * #GNUNET_SYSERR to abort iteration with error!
- */
-static int
-reload_sensors_dir_cb(void *cls, const char *filename)
-{
- struct SensorInfo *sensor;
-
- sensor = load_sensor_from_file(filename);
- if(NULL == sensor)
+ if(NULL != peerstore)
{
- GNUNET_log(GNUNET_ERROR_TYPE_ERROR, _("Error loading sensor from file: %s\n"), filename);
- return GNUNET_OK;
+ GNUNET_PEERSTORE_disconnect(peerstore, GNUNET_YES); /*FIXME: merge into a global peerstore connection */
+ peerstore = NULL;
}
- if(GNUNET_YES == add_sensor_to_hashmap(sensor, sensors))
- GNUNET_log(GNUNET_ERROR_TYPE_INFO, _("Sensor `%s' added to global hashmap\n"), sensor->name);
- else
- GNUNET_log(GNUNET_ERROR_TYPE_INFO, ("Could not add sensor `%s' to global hashmap\n"), sensor->name);
-
- return GNUNET_OK;
+ GNUNET_SCHEDULER_shutdown();
}
-/*
- * Get path to the directory containing the sensor definition files
- *
- * @return sensor files directory
- */
-static char *
-get_sensor_dir()
-{
- char* datadir;
- char* sensordir;
-
- datadir = GNUNET_OS_installation_get_path(GNUNET_OS_IPK_DATADIR);
- GNUNET_asprintf(&sensordir, "%ssensors%s",
- datadir, DIR_SEPARATOR_STR);
-
- return sensordir;
-}
/**
- * Reads sensor definitions from data files
+ * A client disconnected. Remove all of its data structure entries.
*
+ * @param cls closure, NULL
+ * @param client identification of the client
*/
static void
-reload_sensors()
+handle_client_disconnect (void *cls,
+ struct GNUNET_SERVER_Client
+ * client)
{
- char* sensordir;
- int filesfound;
-
- sensordir = get_sensor_dir();
- GNUNET_log(GNUNET_ERROR_TYPE_INFO, _("Reloading sensor definitions from directory `%s'\n"), sensordir);
- GNUNET_assert(GNUNET_YES == GNUNET_DISK_directory_test(sensordir, GNUNET_YES));
-
- //read all files in sensors directory
- filesfound = GNUNET_DISK_directory_scan(sensordir, &reload_sensors_dir_cb, NULL);
- GNUNET_log(GNUNET_ERROR_TYPE_INFO, _("Loaded %d/%d sensors from directory `%s'\n"),
- GNUNET_CONTAINER_multihashmap_size(sensors), filesfound, sensordir);
}
/**
* Creates a structure with basic sensor info to be sent to a client
*
- * @parm sensor sensor information
+ * @param sensor sensor information
* @return message ready to be sent to client
*/
static struct SensorInfoMessage *
uint16_t len;
size_t name_len;
size_t desc_len;
+ char *str_ptr;
name_len = strlen(sensor->name);
if(NULL == sensor->description)
desc_len = 0;
else
- desc_len = strlen(sensor->description);
+ desc_len = strlen(sensor->description) + 1;
len = 0;
len += sizeof(struct SensorInfoMessage);
len += name_len;
msg->description_len = htons(desc_len);
msg->version_major = htons(sensor->version_major);
msg->version_minor = htons(sensor->version_minor);
- memcpy(&msg[1], sensor->name, name_len);
- memcpy((&msg[1]) + name_len, sensor->description, desc_len);
+ str_ptr = (char*) &msg[1];
+ memcpy(str_ptr, sensor->name, name_len);
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Sending sensor name (%d): %.*s\n",
+ name_len, name_len, str_ptr);
+ str_ptr += name_len;
+ memcpy(str_ptr, sensor->description, desc_len);
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Sending sensor description (%d): %.*s\n",
+ desc_len, desc_len, str_ptr);
return msg;
}
struct SensorInfoMessage *msg;
sensorname = (char *)&message[1];
- sensorname_len = message->size - sizeof(struct GNUNET_MessageHeader);
- GNUNET_log (GNUNET_ERROR_TYPE_INFO, "`%s' message received for sensor `%.*s\n",
- "GET SENSOR", sensorname_len, sensorname);
+ sensorname_len = ntohs(message->size) - sizeof(struct GNUNET_MessageHeader);
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO, "`%s' message received for sensor (%d) `%.*s'\n",
+ "GET SENSOR", sensorname_len, sensorname_len, sensorname);
tc = GNUNET_SERVER_transmit_context_create (client);
GNUNET_CRYPTO_hash(sensorname, sensorname_len, &key);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Created key hash for requested sensor\n");
sensorinfo = (struct SensorInfo *)GNUNET_CONTAINER_multihashmap_get(sensors, &key);
- msg = create_sensor_info_msg(sensorinfo);
- GNUNET_SERVER_transmit_context_append_message(tc, (struct GNUNET_MessageHeader *)msg);
+ if(NULL != sensorinfo)
+ {
+ msg = create_sensor_info_msg(sensorinfo);
+ GNUNET_SERVER_transmit_context_append_message(tc, (struct GNUNET_MessageHeader *)msg);
+ GNUNET_free(msg);
+ }
+ else
+ GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Requested sensor `%.*s' was not found\n",
+ sensorname_len, sensorname);
+ GNUNET_SERVER_transmit_context_append_data(tc, NULL, 0, GNUNET_MESSAGE_TYPE_SENSOR_END);
GNUNET_SERVER_transmit_context_run (tc, GNUNET_TIME_UNIT_FOREVER_REL);
-
- GNUNET_free(msg);
}
/**
GNUNET_SERVER_transmit_context_run (tc, GNUNET_TIME_UNIT_FOREVER_REL);
}
+/**
+ * Do a series of checks to determine if sensor should execute
+ *
+ * @return #GNUNET_YES / #GNUNET_NO
+ */
+static int
+should_run_sensor(struct SensorInfo *sensorinfo)
+{
+ struct GNUNET_TIME_Absolute now;
+
+ if(GNUNET_NO == sensorinfo->enabled)
+ {
+ GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Sensor `%s' is disabled, will not run\n", sensorinfo->name);
+ return GNUNET_NO;
+ }
+ now = GNUNET_TIME_absolute_get();
+ if(NULL != sensorinfo->start_time
+ && now.abs_value_us < sensorinfo->start_time->abs_value_us)
+ {
+ GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Start time for sensor `%s' not reached yet, will not run\n", sensorinfo->name);
+ return GNUNET_NO;
+ }
+ if(NULL != sensorinfo->end_time
+ && now.abs_value_us >= sensorinfo->end_time->abs_value_us)
+ {
+ GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Sensor `%s' expired, disabling.\n", sensorinfo->name);
+ set_sensor_enabled(sensorinfo, GNUNET_NO);
+ return GNUNET_NO;
+ }
+ return GNUNET_YES;
+}
+
+/**
+ * Callback function to process statistic values
+ *
+ * @param cls 'struct SensorInfo *'
+ * @param subsystem name of subsystem that created the statistic
+ * @param name the name of the datum
+ * @param value the current value
+ * @param is_persistent #GNUNET_YES if the value is persistent, #GNUNET_NO if not
+ * @return #GNUNET_OK to continue, #GNUNET_SYSERR to abort iteration
+ */
+int sensor_statistics_iterator (void *cls,
+ const char *ss,
+ const char *name,
+ uint64_t value,
+ int is_persistent)
+{
+ struct SensorInfo *sensorinfo = cls;
+ double dvalue = (double)value;
+ struct GNUNET_TIME_Absolute expiry;
+
+ GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Received a value for sensor `%s': %" PRIu64 "\n", sensorinfo->name, value);
+ expiry = GNUNET_TIME_relative_to_absolute(sensorinfo->lifetime);
+ GNUNET_PEERSTORE_store(peerstore,
+ subsystem,
+ &peerid,
+ sensorinfo->name,
+ &dvalue,
+ sizeof(dvalue),
+ expiry,
+ GNUNET_PEERSTORE_STOREOPTION_MULTIPLE,
+ NULL,
+ NULL);
+ return GNUNET_SYSERR; /* We only want one value */
+}
+
+/**
+ * Continuation called after sensor gets all gnunet statistics values
+ *
+ * @param cls 'struct SensorInfo *'
+ * @param success #GNUNET_OK if statistics were
+ * successfully obtained, #GNUNET_SYSERR if not.
+ */
+void end_sensor_run_stat (void *cls, int success)
+{
+ struct SensorInfo *sensorinfo = cls;
+
+ sensorinfo->gnunet_stat_get_handle = NULL;
+ sensorinfo->running = GNUNET_NO;
+}
+
+/**
+ * Tries to parse a received sensor value to its
+ * expected datatype
+ *
+ * @param value the string value received, should be null terminated
+ * @param sensor sensor information struct
+ * @param ret pointer to parsed value
+ * @return size of new parsed value, 0 for error
+ */
+static size_t
+parse_sensor_value (const char *value, struct SensorInfo* sensor, void **ret)
+{
+ double *dval;
+ char *endptr;
+
+ *ret = NULL;
+ if ('\0' == *value)
+ return 0;
+ if(0 == strcmp("numeric", sensor->expected_datatype))
+ {
+ dval = GNUNET_new(double);
+ *dval = strtod(value, &endptr);
+ if(value == endptr)
+ return 0;
+ *ret = dval;
+ return sizeof(double);
+ }
+ if(0 == strcmp("string", sensor->expected_datatype))
+ {
+ *ret = GNUNET_strdup(value);
+ return strlen(value) + 1;
+ }
+ GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
+ _("Unknown value type expected by sensor, this should not happen.\n"));
+ return 0;
+}
+
+/**
+ * Callback for output of executed sensor process
+ *
+ * @param cls 'struct SensorInfo *'
+ * @param line line of output from a command, NULL for the end
+ */
+void sensor_process_callback (void *cls, const char *line)
+{
+ struct SensorInfo *sensorinfo = cls;
+ void *value;
+ size_t valsize;
+ struct GNUNET_TIME_Absolute expiry;
+
+ if(NULL == line)
+ {
+ GNUNET_OS_command_stop(sensorinfo->ext_cmd);
+ sensorinfo->ext_cmd = NULL;
+ sensorinfo->running = GNUNET_NO;
+ sensorinfo->ext_cmd_value_received = GNUNET_NO;
+ return;
+ }
+ if(GNUNET_YES == sensorinfo->ext_cmd_value_received)
+ return; /* We only want one *valid* value */
+ GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Received a value for sensor `%s': %s\n", sensorinfo->name, line);
+ valsize = parse_sensor_value(line, sensorinfo, &value);
+ if (valsize == 0) /* invalid value, FIXME: should we disable the sensor now? */
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Received an invalid value for sensor `%s': %s\n"),
+ sensorinfo->name, line);
+ }
+ else
+ {
+ sensorinfo->ext_cmd_value_received = GNUNET_YES;
+ expiry = GNUNET_TIME_relative_to_absolute(sensorinfo->lifetime);
+ GNUNET_PEERSTORE_store(peerstore,
+ subsystem,
+ &peerid,
+ sensorinfo->name,
+ value,
+ valsize,
+ expiry,
+ GNUNET_PEERSTORE_STOREOPTION_MULTIPLE,
+ NULL,
+ NULL);
+ GNUNET_free (value);
+ }
+}
+
+/**
+ * Checks if the given file is a path
+ *
+ * @return #GNUNET_YES / #GNUNET_NO
+ */
+static int
+is_path(char *filename)
+{
+ size_t filename_len;
+ int i;
+
+ filename_len = strlen(filename);
+ for(i = 0; i < filename_len; i++)
+ {
+ if(DIR_SEPARATOR == filename[i])
+ return GNUNET_YES;
+ }
+ return GNUNET_NO;
+}
+
+/**
+ * Actual execution of a sensor
+ *
+ * @param cls 'struct SensorInfo'
+ * @param tc unsed
+ */
+void
+sensor_run (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext * tc)
+{
+ struct SensorInfo *sensorinfo = cls;
+ int check_result;
+ char *sensors_dir;
+ char *process_path;
+
+ sensorinfo->execution_task = GNUNET_SCHEDULER_add_delayed(sensorinfo->interval, &sensor_run, sensorinfo);
+ if(GNUNET_YES == sensorinfo->running) //FIXME: should we try to kill?
+ {
+ GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Sensor `%s' running for too long, will try again next interval\n", sensorinfo->name);
+ return;
+ }
+ if(GNUNET_NO == should_run_sensor(sensorinfo))
+ return;
+ sensorinfo->running = GNUNET_YES;
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Starting the execution of sensor `%s'\n", sensorinfo->name);
+ if(0 == strcmp ("gnunet-statistics", sensorinfo->source))
+ {
+ sensorinfo->gnunet_stat_get_handle = GNUNET_STATISTICS_get(statistics,
+ sensorinfo->gnunet_stat_service,
+ sensorinfo->gnunet_stat_name,
+ sensorinfo->interval, //try to get values only for the interval of the sensor
+ &end_sensor_run_stat,
+ &sensor_statistics_iterator,
+ sensorinfo);
+ }
+ else if(0 == strcmp ("process", sensorinfo->source))
+ {
+ if(GNUNET_YES == is_path(sensorinfo->ext_process))
+ {
+ GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
+ _("Sensor `%s': External process should not be a path, disabling sensor.\n"),
+ sensorinfo->name);
+ set_sensor_enabled(sensorinfo, GNUNET_NO);
+ return;
+ }
+ //check if the process exists in $PATH
+ process_path = GNUNET_strdup(sensorinfo->ext_process);
+ check_result =
+ GNUNET_OS_check_helper_binary(process_path, GNUNET_NO, NULL);
+ if(GNUNET_SYSERR == check_result)
+ {
+ //search in sensor directory
+ sensors_dir = GNUNET_SENSOR_get_sensor_dir ();
+ GNUNET_free(process_path);
+ GNUNET_asprintf(&process_path, "%s%s-files%s%s",
+ sensors_dir,
+ sensorinfo->name,
+ DIR_SEPARATOR_STR,
+ sensorinfo->ext_process);
+ GNUNET_free(sensors_dir);
+ check_result =
+ GNUNET_OS_check_helper_binary(process_path, GNUNET_NO, NULL);
+ }
+ if(GNUNET_SYSERR == check_result)
+ {
+ GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
+ _("Sensor `%s' process `%s' problem: binary doesn't exist or not executable\n"),
+ sensorinfo->name,
+ sensorinfo->ext_process);
+ set_sensor_enabled(sensorinfo, GNUNET_NO);
+ sensorinfo->running = GNUNET_NO;
+ GNUNET_free(process_path);
+ return;
+ }
+ sensorinfo->ext_cmd_value_received = GNUNET_NO;
+ sensorinfo->ext_cmd = GNUNET_OS_command_run(&sensor_process_callback,
+ sensorinfo,
+ GNUNET_TIME_UNIT_FOREVER_REL,
+ process_path,
+ sensorinfo->ext_process,
+ sensorinfo->ext_args,
+ NULL);
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Process started for sensor `%s'\n", sensorinfo->name);
+ GNUNET_free(process_path);
+ }
+ else
+ {
+ sensorinfo->running = GNUNET_NO;
+ GNUNET_break(0); //shouldn't happen
+ }
+}
+
+/**
+ * Starts the execution of a sensor
+ *
+ * @param cls unused
+ * @param key hash of sensor name, key to hashmap (unused)
+ * @param value a 'struct SensorInfo *'
+ * @return #GNUNET_YES if we should continue to
+ * iterate,
+ * #GNUNET_NO if not.
+ */
+int schedule_sensor(void *cls,
+ const struct GNUNET_HashCode *key, void *value)
+{
+ struct SensorInfo *sensorinfo = value;
+
+ if(GNUNET_NO == should_run_sensor(sensorinfo))
+ return GNUNET_YES;
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Scheduling sensor `%s' to run after %" PRIu64 " microseconds\n",
+ sensorinfo->name, sensorinfo->interval.rel_value_us);
+ if(GNUNET_SCHEDULER_NO_TASK != sensorinfo->execution_task)
+ {
+ GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
+ _("Sensor `%s' execution task already set, this should not happen\n"), sensorinfo->name);
+ return GNUNET_NO;
+ }
+ sensorinfo->execution_task = GNUNET_SCHEDULER_add_delayed(sensorinfo->interval, &sensor_run, sensorinfo);
+ return GNUNET_YES;
+}
+
+/**
+ * Starts the execution of all enabled sensors
+ *
+ */
+static void
+schedule_all_sensors()
+{
+ GNUNET_CONTAINER_multihashmap_iterate(sensors, &schedule_sensor, NULL);
+}
+
/**
* Process statistics requests.
*
{
static const struct GNUNET_SERVER_MessageHandler handlers[] = {
{&handle_get_sensor, NULL, GNUNET_MESSAGE_TYPE_SENSOR_GET,
- sizeof (struct GNUNET_MessageHeader)},
- {&handle_get_all_sensors, NULL, GNUNET_MESSAGE_TYPE_SENSOR_GETALL,
0},
+ {&handle_get_all_sensors, NULL, GNUNET_MESSAGE_TYPE_SENSOR_GETALL,
+ sizeof (struct GNUNET_MessageHeader)},
{NULL, NULL, 0, 0}
};
cfg = c;
- sensors = GNUNET_CONTAINER_multihashmap_create(10, GNUNET_NO);
- reload_sensors();
+ sensors = GNUNET_SENSOR_load_all_sensors ();
+ schedule_all_sensors();
+ SENSOR_analysis_start(c, sensors);
+ SENSOR_reporting_start(c, sensors);
+ statistics = GNUNET_STATISTICS_create("sensor", cfg);
+ GNUNET_CRYPTO_get_peer_identity(cfg, &peerid);
+ peerstore = GNUNET_PEERSTORE_connect(cfg);
GNUNET_SERVER_add_handlers (server, handlers);
GNUNET_SERVER_disconnect_notify (server,
&handle_client_disconnect,
projects / oweals / gnunet.git / blobdiff