feat: add systemd services and client start logging

clients/cpu_temp/src/cpu_temp.c

@@ -29,8 +29,11 @@ int main(int argc, char *argv[]) {
   double cpu_temp;
   char buffer[6];
 
+  int id = atoi(argv[1]);
   int sleep_ms = atoi(argv[2]);
 
+  printf("Started cpu temp (id: %d, delay: %dms)\n", id, sleep_ms);
+
   while (1) {
     if (pread(file_fd, buffer, sizeof(buffer), 0) == -1) {
       perror("Failed to read file");
@@ -42,7 +45,7 @@ int main(int argc, char *argv[]) {
     measurement_t measurement = {
         .data.float64 = cpu_temp,
         .datatype = FLOAT64,
-        .id = atoi(argv[1]),
+        .id = id,
     };
 
     if (send_userspace_message(&userspace_send_handle, measurement) == -1) {

clients/dummy/src/dummy.c

@@ -23,13 +23,16 @@ int main(int argc, char *argv[]) {
 
   double step = 0.0;
 
+  int id = atoi(argv[1]);
   int sleep_ms = atoi(argv[2]);
 
+  printf("Started dummy (id: %d, delay: %dms)\n", id, sleep_ms);
+
   while (1) {
     measurement_t measurement = {
         .data.float64 = sin(step),
         .datatype = FLOAT64,
-        .id = atoi(argv[1]),
+        .id = id,
     };
 
     if (send_userspace_message(&userspace_send_handle, measurement) == -1) {

common/src/userspace_comm.c

@@ -27,8 +27,8 @@ int send_userspace_message(userspace_send_handle_t *handle,
       .measurement = measurement,
   };
 
-  int read = msgsnd(handle->msg_queue_id, &message_queue_message, sizeof(measurement_t),
-         0);
+  int read = msgsnd(handle->msg_queue_id, &message_queue_message,
+                    sizeof(measurement_t), 0);
   if (read == -1) {
     return -1;
   }

systemd/clients/cpu-temp.service

+[Unit]
+Description=CPU Temp
+After=daemon.service
+
+[Service]
+ExecStart=/usr/bin/cpu-temp 2 250
+Restart=always
+
+[Install]
+WantedBy=multi-user.target

systemd/clients/dummy.service

+[Unit]
+Description=Dummy
+After=daemon.service
+
+[Service]
+ExecStart=/usr/bin/dummy 1 250
+Restart=always
+
+[Install]
+WantedBy=multi-user.target

systemd/daemon.service

+[Unit]
+Description=Daemon
+After=network.target
+
+[Service]
+ExecStart=/usr/bin/daemon
+Restart=always
+
+[Install]
+WantedBy=multi-user.target