support error handler callback

src/sf_global.c

@@ -39,7 +39,7 @@ SFGlobalVariables g_sf_global_vars = {
     SF_DEF_MAX_PACKAGE_SIZE, SF_DEF_MIN_BUFF_SIZE,
     SF_DEF_MAX_BUFF_SIZE, 0, SF_DEF_THREAD_STACK_SIZE,
     0, 0, 0, {'\0'}, {'\0'}, {SF_DEF_SYNC_LOG_BUFF_INTERVAL, false},
-    {0, 0}
+    {0, 0}, NULL, {NULL, 0}
 };
 
 SFContext g_sf_context = {

src/sf_global.h

@@ -54,6 +54,8 @@ typedef struct sf_global_variables {
 
     SFLogConfig error_log;
     SFConnectionStat connection_stat;
+    sf_error_handler_callback error_handler;
+    string_t empty;
 } SFGlobalVariables;
 
 typedef struct sf_context_ini_config {
@@ -84,6 +86,9 @@ extern SFContext                 g_sf_context;
 #define SF_G_CONN_CURRENT_COUNT  g_sf_global_vars.connection_stat.current_count
 #define SF_G_CONN_MAX_COUNT      g_sf_global_vars.connection_stat.max_count
 
+#define SF_G_ERROR_HANDLER       g_sf_global_vars.error_handler
+#define SF_G_EMPTY_STRING        g_sf_global_vars.empty
+
 #define SF_WORK_THREADS(sf_context)        sf_context.work_threads
 #define SF_ALIVE_THREAD_COUNT(sf_context)  sf_context.thread_count
 #define SF_THREAD_INDEX(sf_context, tdata) (int)(tdata - sf_context.thread_data)
@@ -207,6 +212,12 @@ static inline void sf_set_global_base_path(const char *base_path)
     SF_G_BASE_PATH_INITED = true;
 }
 
+static inline void sf_set_error_handler(
+        sf_error_handler_callback error_handler)
+{
+    SF_G_ERROR_HANDLER = error_handler;
+}
+
 #ifdef __cplusplus
 }
 #endif

src/sf_proto.h

@@ -103,7 +103,7 @@
         if (client_ctx->auth.enabled) { \
             out_bytes += FCFS_AUTH_SESSION_ID_LEN;   \
             memcpy(the_req_start, client_ctx->auth.ctx-> \
-                    session_id, FCFS_AUTH_SESSION_ID_LEN);  \
+                    session.id, FCFS_AUTH_SESSION_ID_LEN);  \
             the_req_start += FCFS_AUTH_SESSION_ID_LEN;   \
         }  \
         if (the_req_id > 0) {  \

src/sf_types.h

@@ -43,6 +43,8 @@ typedef int (*sf_recv_timeout_callback)(struct fast_task_info *task);
 /* calback for release iovec buffer */
 typedef void (*sf_release_buffer_callback)(struct fast_task_info *task);
 
+typedef int (*sf_error_handler_callback)(const int errnum);
+
 typedef struct sf_context {
     char name[64];
     struct nio_thread_data *thread_data;

src/sf_util.c

@@ -22,7 +22,6 @@
 #include <stdio.h>
 #include <string.h>
 #include <pthread.h>
-#include "sf_global.h"
 #include "sf_define.h"
 #include "sf_util.h"
 

src/sf_util.h

@@ -23,6 +23,7 @@
 #include "fastcommon/sched_thread.h"
 #include "sf_define.h"
 #include "sf_types.h"
+#include "sf_global.h"
 
 #ifdef DEBUG_FLAG  /*only for format check*/
 
@@ -127,8 +128,12 @@ static inline int sf_unify_errno(const int errnum)
     }
 }
 
-static inline int sf_localize_errno(const int errnum)
+static inline int sf_localize_errno(int errnum)
 {
+    if (SF_G_ERROR_HANDLER != NULL) {
+        errnum = SF_G_ERROR_HANDLER(errnum);
+    }
+
     switch (errnum) {
         case SF_ERROR_EBUSY:
             return EBUSY;