Log: skygw_log_rotate replaced with mxs_log_rotate.

With only one log-file no arguments are needed. The maxadmin command
'flush log'  still accepts all the previous arguments, but warns about
them being deprecated.

log_manager/log_manager.cc

@@ -1349,47 +1349,6 @@ int skygw_log_flush(logfile_id_t id)
     return err;
 }
 
-/**
- * Replace current logfile with new file with increased sequence number on
- * its name.
- */
-int skygw_log_rotate(logfile_id_t id)
-{
-    int err = -1;
-
-    if (id == LOGFILE_ERROR)
-    {
-        if (logmanager_register(false))
-        {
-            CHK_LOGMANAGER(lm);
-
-            logfile_t *lf = logmanager_get_logfile(lm);
-            CHK_LOGFILE(lf);
-
-            MXS_NOTICE("Log rotation is called for %s.", lf->lf_full_file_name);
-
-            logfile_rotate(lf);
-            err = 0;
-
-            logmanager_unregister();
-        }
-        else
-        {
-            ss_dfprintf(stderr, "Can't register to logmanager, rotating failed.\n");
-        }
-    }
-    else
-    {
-        // We'll pretend everything went ok.
-        err = 0;
-    }
-
-    return err;
-}
-
-
-
-
 /**
  * @node Register as a logging client to logmanager.
  *
@@ -2717,7 +2676,28 @@ int mxs_log_flush()
  */
 int mxs_log_rotate()
 {
-    return skygw_log_rotate(LOGFILE_ERROR);
+    int err = -1;
+
+    if (logmanager_register(false))
+    {
+        CHK_LOGMANAGER(lm);
+
+        logfile_t *lf = logmanager_get_logfile(lm);
+        CHK_LOGFILE(lf);
+
+        MXS_NOTICE("Log rotation is called for %s.", lf->lf_full_file_name);
+
+        logfile_rotate(lf);
+        err = 0;
+
+        logmanager_unregister();
+    }
+    else
+    {
+        ss_dfprintf(stderr, "Can't register to logmanager, rotating failed.\n");
+    }
+
+    return err;
 }
 
 static bool convert_priority_to_file(int priority, logfile_id_t* idp, const char** textp)

log_manager/log_manager.h

@@ -159,7 +159,6 @@ void skygw_logmanager_exit(void);
 void skygw_log_done(void);
 int  skygw_log_flush(logfile_id_t id);
 void skygw_log_sync_all(void);
-int  skygw_log_rotate(logfile_id_t id);
 int  skygw_log_enable(logfile_id_t id);
 int  skygw_log_disable(logfile_id_t id);
 void skygw_log_sync_all(void);

server/core/gateway.c

@@ -307,10 +307,7 @@ static void sigusr1_handler (int i)
     LOGIF(LM, (skygw_log_write(
                    LOGFILE_MESSAGE,
                    "Log file flush following reception of SIGUSR1\n")));
-    skygw_log_rotate(LOGFILE_ERROR);
-    skygw_log_rotate(LOGFILE_MESSAGE);
-    skygw_log_rotate(LOGFILE_TRACE);
-    skygw_log_rotate(LOGFILE_DEBUG);
+    mxs_log_rotate();
 }
 
 static void sigterm_handler (int i) {

server/modules/routing/debugcmd.c

@@ -613,29 +613,48 @@ struct subcommand removeoptions[] = {
 static void
 flushlog(DCB *pdcb, char *logname)
 {
-    if (logname == NULL)
+    bool unrecognized = false;
+    bool deprecated = false;
+
+    if (!strcasecmp(logname, "error"))
     {
-    }
-    else if (!strcasecmp(logname, "error"))
-    {
-        skygw_log_rotate(LOGFILE_ERROR);
+        deprecated = true;
     }
     else if (!strcasecmp(logname, "message"))
     {
-        skygw_log_rotate(LOGFILE_MESSAGE);
+        deprecated = true;
     }
     else if (!strcasecmp(logname, "trace"))
     {
-        skygw_log_rotate(LOGFILE_TRACE);
+        deprecated = true;
     }
     else if (!strcasecmp(logname, "debug"))
     {
-        skygw_log_rotate(LOGFILE_DEBUG);
+        deprecated = true;
+    }
+    else if (!strcasecmp(logname, "maxscale"))
+    {
+        ; // nop
     }
     else
     {
-        dcb_printf(pdcb, "Unexpected logfile name, expected "
-                   "error, message, trace or debug.\n");
+        unrecognized = true;
+    }
+
+    if (unrecognized)
+    {
+        dcb_printf(pdcb, "Unexpected logfile name '%s', expected: 'maxscale'.\n", logname);
+    }
+    else
+    {
+        mxs_log_rotate();
+
+        if (deprecated)
+        {
+            dcb_printf(pdcb,
+                       "'%s' is deprecated, currently there is only one log 'maxscale', "
+                       "which was rotated.\n", logname);
+        }
     }
 }
 
@@ -647,10 +666,7 @@ flushlog(DCB *pdcb, char *logname)
 static void
 flushlogs(DCB *pdcb)
 {
-    skygw_log_rotate(LOGFILE_ERROR);
-    skygw_log_rotate(LOGFILE_MESSAGE);
-    skygw_log_rotate(LOGFILE_TRACE);
-    skygw_log_rotate(LOGFILE_DEBUG);
+    mxs_log_rotate();
 }
 
 
@@ -670,8 +686,8 @@ struct subcommand flushoptions[] = {
         "logs",
         0,
         flushlogs,
-        "Flush the content of all log files, close that logs, rename them and open a new log files",
-        "Flush the content of all log files, close that logs, rename them and open a new log files",
+        "Flush the content of all log files, close those logs, rename them and open a new log files",
+        "Flush the content of all log files, close those logs, rename them and open a new log files",
         {0, 0, 0}
     },
     {

server/modules/routing/maxinfo/maxinfo_exec.c

@@ -303,10 +303,7 @@ char	errmsg[120];
  */
 void exec_flush_logs(DCB *dcb, MAXINFO_TREE *tree)
 {
-    skygw_log_rotate(LE);
-    skygw_log_rotate(LM);
-    skygw_log_rotate(LT);
-    skygw_log_rotate(LD);
+    mxs_log_rotate();
     maxinfo_send_ok(dcb);
 }