--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/bmsd/nodes.c Sat Aug 04 21:19:15 2018 +0200
@@ -0,0 +1,241 @@
+/**
+ * @file nodes.c
+ * @brief Handle nodes status
+ * @author Michiel Broek <mbroek at mbse dot eu>
+ *
+ * Copyright (C) 2018
+ *
+ * This file is part of the bms (Brewery Management System)
+ *
+ * This is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * bms is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with ThermFerm; see the file COPYING. If not, write to the Free
+ * Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+
+#include "bms.h"
+#include "xutil.h"
+#include "nodes.h"
+#include "mysql.h"
+
+
+sys_node_list *nodes = NULL;
+
+extern int debug;
+
+
+
+void node_birth_data(char *topic, char *payload)
+{
+ struct json_object *jobj, *val, *metric, *metric2;
+ sys_node_list *node, *tmpp;
+ char *group_id, *message_type, *edge_node;
+ bool new_node = true;
+
+// fprintf(stdout, "node_birth: %s %s\n", topic, payload);
+
+ strtok(topic, "/"); // ignore namespace
+ group_id = strtok(NULL, "/");
+ message_type = strtok(NULL, "/");
+ edge_node = strtok(NULL, "/\0");
+
+ /*
+ * Search node record in the memory array and use it if found.
+ */
+ if (nodes) {
+ for (tmpp = nodes; tmpp; tmpp = tmpp->next) {
+ if ((strcmp(tmpp->group_id, group_id) == 0) && (strcmp(tmpp->node, edge_node) == 0)) {
+ new_node = false;
+ node = tmpp;
+ node->lastseen = time(NULL);
+ node->online = true;
+ break;
+ }
+ }
+ }
+
+ /*
+ * Allocate new node if not yet known.
+ */
+ if (new_node) {
+ node = (sys_node_list *)malloc(sizeof(sys_node_list));
+ node->uuid = NULL;
+ node->next = NULL;
+ node->group_id = xstrcpy(group_id);
+ node->node = xstrcpy(edge_node);
+ node->online = true;
+ node->hardwaremake = node->hardwaremodel = node->os = node->os_version = node->firmware = NULL;
+ node->firstseen = node->lastseen = time(NULL);
+ node->temperature = node->humidity = node->barometer = 0.0;
+ node->gps_latitude = node->gps_longitude = node->gps_altitude = 0.0;
+ node->net_address = node->net_ifname = NULL;
+ node->net_rssi = 0;
+ }
+
+ /*
+ * Process the JSON formatted payload.
+ * Update only the fields that are found in the payload.
+ */
+ jobj = json_tokener_parse(payload);
+
+ if (json_object_object_get_ex(jobj, "timestamp", &val)) {
+ if (strcmp((char *)"NDATA", message_type)) {
+ node->firstseen = json_object_get_int(val);
+ syslog(LOG_NOTICE, "Online node `%s/%s'", node->group_id, node->node);
+ } else {
+ node->lastseen = json_object_get_int(val);
+ }
+ }
+
+ /*
+ if (json_object_object_get_ex(jobj, "seq", &val)) {
+ printf("seq: %s\n", json_object_to_json_string_ext(val, 0)); // Do we need it?
+ }
+ */
+
+ if (json_object_object_get_ex(jobj, "metric", &metric)) {
+ if (json_object_object_get_ex(metric, "uuid", &val)) {
+ if (node->uuid)
+ free(node->uuid);
+ node->uuid = xstrcpy((char *)json_object_get_string(val));
+ }
+ if (json_object_object_get_ex(metric, "properties", &metric2)) {
+ if (json_object_object_get_ex(metric2, "hardwaremake", &val)) {
+ if (node->hardwaremake)
+ free(node->hardwaremake);
+ node->hardwaremake = xstrcpy((char *)json_object_get_string(val));
+ }
+ if (json_object_object_get_ex(metric2, "hardwaremodel", &val)) {
+ if (node->hardwaremodel)
+ free(node->hardwaremodel);
+ node->hardwaremodel = xstrcpy((char *)json_object_get_string(val));
+ }
+ if (json_object_object_get_ex(metric2, "os", &val)) {
+ if (node->os)
+ free(node->os);
+ node->os = xstrcpy((char *)json_object_get_string(val));
+ }
+ if (json_object_object_get_ex(metric2, "os_version", &val)) {
+ if (node->os_version)
+ free(node->os_version);
+ node->os_version = xstrcpy((char *)json_object_get_string(val));
+ }
+ if (json_object_object_get_ex(metric2, "FW", &val)) {
+ if (node->firmware)
+ free(node->firmware);
+ node->firmware = xstrcpy((char *)json_object_get_string(val));
+ }
+ }
+ if (json_object_object_get_ex(metric, "THB", &metric2)) {
+ if (json_object_object_get_ex(metric2, "temperature", &val)) {
+ node->temperature = json_object_get_double(val);
+ }
+ if (json_object_object_get_ex(metric2, "humidity", &val)) {
+ node->humidity= json_object_get_double(val);
+ }
+ if (json_object_object_get_ex(metric2, "barometer", &val)) {
+ node->barometer = json_object_get_double(val);
+ }
+ }
+ if (json_object_object_get_ex(metric, "GPS", &metric2)) {
+ if (json_object_object_get_ex(metric2, "latitude", &val)) {
+ node->gps_latitude = json_object_get_double(val);
+ }
+ if (json_object_object_get_ex(metric2, "longitude", &val)) {
+ node->gps_longitude = json_object_get_double(val);
+ }
+ if (json_object_object_get_ex(metric2, "altitude", &val)) {
+ node->gps_altitude = json_object_get_double(val);
+ }
+ }
+ if (json_object_object_get_ex(metric, "net", &metric2)) {
+ if (json_object_object_get_ex(metric2, "address", &val)) {
+ if (node->net_address)
+ free(node->net_address);
+ node->net_address = xstrcpy((char *)json_object_get_string(val));
+ }
+ if (json_object_object_get_ex(metric2, "ifname", &val)) {
+ if (node->net_ifname)
+ free(node->net_ifname);
+ node->net_ifname = xstrcpy((char *)json_object_get_string(val));
+ }
+ if (json_object_object_get_ex(metric2, "rssi", &val)) {
+ node->net_rssi = json_object_get_int(val);
+ }
+ }
+ }
+ json_object_put(jobj);
+
+// node_dump(node);
+
+ if (new_node) {
+ if (nodes == NULL) {
+ nodes = node;
+ } else {
+ for (tmpp = nodes; tmpp; tmpp = tmpp->next) {
+ if (tmpp->next == NULL) {
+ tmpp->next = node;
+ break;
+ }
+ }
+ }
+ node_mysql_insert(node);
+ } else {
+ node_mysql_update(node);
+ }
+}
+
+
+
+void node_dump(sys_node_list *node)
+{
+ if (debug) {
+ printf("online %s\n", node->online ? "yes":"no");
+ printf("uuid %s\n", node->uuid);
+ printf("node %s\n", node->node);
+ printf("group %s\n", node->group_id);
+ printf("hw make %s model %s\n", node->hardwaremake, node->hardwaremodel);
+ printf("os %s version %s\n", node->os, node->os_version);
+ printf("firmware %s\n", node->firmware);
+ printf("first %ld last %ld\n", node->firstseen, node->lastseen);
+ printf("THB %.2f %.2f %.2f\n", node->temperature, node->humidity, node->barometer);
+ printf("GPS %.5f %.5f %.5f\n", node->gps_latitude, node->gps_longitude, node->gps_altitude);
+ printf("net %s:%s\n", node->net_ifname, node->net_address);
+ printf("rssi %d\n", node->net_rssi);
+ }
+}
+
+
+
+void node_death(char *topic)
+{
+ char *group_id, *edge_node;
+ sys_node_list *tmpp;
+
+ strtok(topic, "/"); // ignore namespace
+ group_id = strtok(NULL, "/");
+ strtok(NULL, "/"); // ignore message_type
+ edge_node = strtok(NULL, "/\0");
+
+ syslog(LOG_NOTICE, "Offline node `%s/%s'", group_id, edge_node);
+ node_mysql_death(edge_node);
+
+ for (tmpp = nodes; tmpp; tmpp = tmpp->next) {
+ if (strcmp(tmpp->node, edge_node) == 0) {
+ tmpp->online = false;
+ break;
+ }
+ }
+}
+
+