Scripting Engine Debugger Support

src/commands.def

@@ -5967,6 +5967,7 @@ struct COMMAND_ARG SCRIPT_DEBUG_mode_Subargs[] = {
 /* SCRIPT DEBUG argument table */
 struct COMMAND_ARG SCRIPT_DEBUG_Args[] = {
 {MAKE_ARG("mode",ARG_TYPE_ONEOF,-1,NULL,NULL,NULL,CMD_ARG_NONE,3,NULL),.subargs=SCRIPT_DEBUG_mode_Subargs},
+{MAKE_ARG("engine",ARG_TYPE_STRING,-1,NULL,NULL,"9.0.0",CMD_ARG_OPTIONAL,0,NULL)},
 };
 
 /********** SCRIPT EXISTS ********************/
@@ -6113,7 +6114,7 @@ struct COMMAND_ARG SCRIPT_SHOW_Args[] = {
 
 /* SCRIPT command table */
 struct COMMAND_STRUCT SCRIPT_Subcommands[] = {
-{MAKE_CMD("debug","Sets the debug mode of server-side Lua scripts.","O(1)","3.2.0",CMD_DOC_NONE,NULL,NULL,"scripting",COMMAND_GROUP_SCRIPTING,SCRIPT_DEBUG_History,0,SCRIPT_DEBUG_Tips,0,scriptCommand,3,CMD_NOSCRIPT,ACL_CATEGORY_SCRIPTING,SCRIPT_DEBUG_Keyspecs,0,NULL,1),.args=SCRIPT_DEBUG_Args},
+{MAKE_CMD("debug","Sets the debug mode of server-side Lua scripts.","O(1)","3.2.0",CMD_DOC_NONE,NULL,NULL,"scripting",COMMAND_GROUP_SCRIPTING,SCRIPT_DEBUG_History,0,SCRIPT_DEBUG_Tips,0,scriptCommand,-3,CMD_NOSCRIPT,ACL_CATEGORY_SCRIPTING,SCRIPT_DEBUG_Keyspecs,0,NULL,1),.args=SCRIPT_DEBUG_Args},
 {MAKE_CMD("exists","Determines whether server-side Lua scripts exist in the script cache.","O(N) with N being the number of scripts to check (so checking a single script is an O(1) operation).","2.6.0",CMD_DOC_NONE,NULL,NULL,"scripting",COMMAND_GROUP_SCRIPTING,SCRIPT_EXISTS_History,0,SCRIPT_EXISTS_Tips,2,scriptCommand,-3,CMD_NOSCRIPT|CMD_STALE,ACL_CATEGORY_SCRIPTING,SCRIPT_EXISTS_Keyspecs,0,NULL,1),.args=SCRIPT_EXISTS_Args},
 {MAKE_CMD("flush","Removes all server-side Lua scripts from the script cache.","O(N) with N being the number of scripts in cache","2.6.0",CMD_DOC_NONE,NULL,NULL,"scripting",COMMAND_GROUP_SCRIPTING,SCRIPT_FLUSH_History,1,SCRIPT_FLUSH_Tips,2,scriptCommand,-2,CMD_NOSCRIPT|CMD_STALE,ACL_CATEGORY_SCRIPTING,SCRIPT_FLUSH_Keyspecs,0,NULL,1),.args=SCRIPT_FLUSH_Args},
 {MAKE_CMD("help","Returns helpful text about the different subcommands.","O(1)","5.0.0",CMD_DOC_NONE,NULL,NULL,"scripting",COMMAND_GROUP_SCRIPTING,SCRIPT_HELP_History,0,SCRIPT_HELP_Tips,0,scriptCommand,2,CMD_LOADING|CMD_STALE,ACL_CATEGORY_SCRIPTING,SCRIPT_HELP_Keyspecs,0,NULL,0)},

src/commands/script-debug.json

@@ -4,7 +4,7 @@
         "complexity": "O(1)",
         "group": "scripting",
         "since": "3.2.0",
-        "arity": 3,
+        "arity": -3,
         "container": "SCRIPT",
         "function": "scriptCommand",
         "command_flags": [
@@ -34,6 +34,12 @@
                         "token": "NO"
                     }
                 ]
+            },
+            {
+                "name": "engine",
+                "type": "string",
+                "optional": true,
+                "since": "9.0.0"
             }
         ],
         "reply_schema": {

src/eval.c

@@ -49,7 +49,6 @@
 #include "monotonic.h"
 #include "resp_parser.h"
 #include "script.h"
-#include "lua/debug_lua.h"
 #include "scripting_engine.h"
 #include "sds.h"
 
@@ -562,8 +561,9 @@ void evalShaRoCommand(client *c) {
 void scriptCommand(client *c) {
     if (c->argc == 2 && !strcasecmp(c->argv[1]->ptr, "help")) {
         const char *help[] = {
-            "DEBUG (YES|SYNC|NO)",
-            "    Set the debug mode for subsequent scripts executed.",
+            "DEBUG (YES|SYNC|NO) [<engine_name>]",
+            "    Set the debug mode for subsequent scripts executed of the specified engine.",
+            "    Default engine name: 'lua'",
             "EXISTS <sha1> [<sha1> ...]",
             "    Return information about the existence of the scripts in the script cache.",
             "FLUSH [ASYNC|SYNC]",
@@ -615,19 +615,35 @@ void scriptCommand(client *c) {
         zfree(sha);
     } else if (c->argc == 2 && !strcasecmp(c->argv[1]->ptr, "kill")) {
         scriptKill(c, 1);
-    } else if (c->argc == 3 && !strcasecmp(c->argv[1]->ptr, "debug")) {
+    } else if ((c->argc == 3 || c->argc == 4) && !strcasecmp(c->argv[1]->ptr, "debug")) {
         if (clientHasPendingReplies(c)) {
             addReplyError(c, "SCRIPT DEBUG must be called outside a pipeline");
             return;
         }
+
+        const char *engine_name = c->argc == 4 ? c->argv[3]->ptr : "lua";
+        scriptingEngine *en = scriptingEngineManagerFind(engine_name);
+        if (en == NULL) {
+            addReplyErrorFormat(c, "No scripting engine found with name '%s' to enable debug", engine_name);
+            return;
+        }
+        serverAssert(en != NULL);
+
+        sds err;
         if (!strcasecmp(c->argv[2]->ptr, "no")) {
-            ldbDisable(c);
+            scriptingEngineDebuggerDisable(c);
             addReply(c, shared.ok);
         } else if (!strcasecmp(c->argv[2]->ptr, "yes")) {
-            ldbEnable(c);
+            if (scriptingEngineDebuggerEnable(c, en, &err) != C_OK) {
+                addReplyErrorSds(c, err);
+                return;
+            }
             addReply(c, shared.ok);
         } else if (!strcasecmp(c->argv[2]->ptr, "sync")) {
-            ldbEnable(c);
+            if (scriptingEngineDebuggerEnable(c, en, &err) != C_OK) {
+                addReplyErrorSds(c, err);
+                return;
+            }
             addReply(c, shared.ok);
             c->flag.lua_debug_sync = 1;
         } else {
@@ -675,11 +691,11 @@ unsigned long evalScriptsMemory(void) {
 /* Wrapper for EVAL / EVALSHA that enables debugging, and makes sure
  * that when EVAL returns, whatever happened, the session is ended. */
 void evalGenericCommandWithDebugging(client *c, int evalsha) {
-    if (ldbStartSession(c)) {
+    if (scriptingEngineDebuggerStartSession(c)) {
         evalGenericCommand(c, evalsha);
-        ldbEndSession(c);
+        scriptingEngineDebuggerEndSession(c);
     } else {
-        ldbDisable(c);
+        scriptingEngineDebuggerDisable(c);
     }
 }