Stop using custom logger

Stop using a custom logger for subscriber.
When drone logs are required during execution (a.k.a debug mode), they are now
send through OPC-UA.

include/dronedge.h

@@ -5,7 +5,7 @@
 #include "autopilot_wrapper.h"
 #include "pubsub.h"
 
-#define DRONE_VARIABLE_NB 3
+#define DRONE_VARIABLE_NB 4
 #define SUBSCRIBER_VARIABLE_NB 1
 struct messageNode {
   char *message;
@@ -22,7 +22,7 @@ UA_UInt32 positionArrayDims[] = {POSITION_ARRAY_SIZE};
 UA_Double speedArray[SPEED_ARRAY_SIZE] = { 0 };
 UA_UInt32 speedArrayDims[] = {SPEED_ARRAY_SIZE};
 
-UA_String message = {
+UA_String initial_ua_string = {
     .length = 0,
     .data = NULL,
 };
@@ -55,7 +55,7 @@ VariableData droneVariableArray[] = {
     {
         .name = "message",
         .description = "Message to send to the other drones",
-        .value = &message,
+        .value = &initial_ua_string,
         .type = UA_TYPES_STRING,
         .builtInType = UA_NS0ID_STRING,
         .valueRank = UA_VALUERANK_SCALAR,
@@ -63,6 +63,17 @@ VariableData droneVariableArray[] = {
         .arrayDimensions = NULL,
         .getter.getString = get_message,
     },
+    {
+        .name = "log",
+        .description = "Message to send to the other drones",
+        .value = &initial_ua_string,
+        .type = UA_TYPES_STRING,
+        .builtInType = UA_NS0ID_STRING,
+        .valueRank = UA_VALUERANK_SCALAR,
+        .arrayDimensionsSize = 0,
+        .arrayDimensions = NULL,
+        .getter.getString = get_log,
+    },
 };
 
 VariableStruct droneVariables = {
@@ -74,7 +85,7 @@ VariableData subscriberVariableArray[] = {
     {
         .name = "message",
         .description = "Message to send to the other drones",
-        .value = &message,
+        .value = &initial_ua_string,
         .type = UA_TYPES_STRING,
         .builtInType = UA_NS0ID_STRING,
         .valueRank = UA_VALUERANK_SCALAR,
@@ -89,7 +100,4 @@ VariableStruct subscriberVariables = {
     .variableArray = subscriberVariableArray,
 };
 
-void Subscriber_log(void *context, UA_LogLevel level, UA_LogCategory category,
-                    const char *msg, va_list args);
-
 #endif /* __DRONEDGE_H__ */

include/pubsub.h

@@ -31,6 +31,8 @@ typedef struct {
     UA_Float  climbRate;
     char      message[MAX_MESSAGE_SIZE];
     UA_UInt32 messageId;
+    char      log[MAX_MESSAGE_SIZE];
+    UA_UInt32 logId;
 } JSDroneData;
 
 typedef struct {
@@ -79,6 +81,8 @@ int runPubsub(const UA_Logger *logger, UA_String *transportProfile,
 
 UA_String get_message(void);
 
+UA_String get_log(void);
+
 UA_UInt16 get_drone_id(UA_UInt32 nb);
 
 void init_drone_node_id(UA_UInt32 id, UA_UInt32 nb, UA_UInt32 magic);