From 50aa816035a319992df7341d6a80d2462eec69c7 Mon Sep 17 00:00:00 2001
From: hwware <wen.hui.ware@gmail.com>
Date: Mon, 14 Oct 2024 13:18:50 +0000
Subject: [PATCH] Add API for accessing Runtime args

Signed-off-by: hwware <wen.hui.ware@gmail.com>
---
 src/module.c                    | 15 +++++++++++++++
 src/redismodule.h               |  2 ++
 src/valkeymodule.h              |  7 +++++++
 tests/modules/moduleparameter.c |  7 ++++++-
 4 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/src/module.c b/src/module.c
index 5b9b0dcb0c..864c584165 100644
--- a/src/module.c
+++ b/src/module.c
@@ -3042,6 +3042,20 @@ client *moduleGetReplyClient(ValkeyModuleCtx *ctx) {
     }
 }
 
+ValkeyModuleRunTimeArgs *VM_GetRunTimeArgs(ValkeyModuleCtx *ctx) {
+    client *c = moduleGetReplyClient(ctx);
+    if (c == NULL) return NULL;
+
+    ValkeyModuleRunTimeArgs *args = zmalloc(sizeof(struct ValkeyModuleRunTimeArgs));
+    int argc = ctx->module->loadmod->argc;
+    args->argv = argc ? zmalloc(sizeof(robj *) * argc) : NULL;
+    args->argc = argc;
+    for (int i = 0; i < argc; i++) {
+        args->argv[i] = (char *)ctx->module->loadmod->argv[i]->ptr;
+    }
+    return args;
+}
+
 /* Send an integer reply to the client, with the specified `long long` value.
  * The function always returns VALKEYMODULE_OK. */
 int VM_ReplyWithLongLong(ValkeyModuleCtx *ctx, long long ll) {
@@ -13595,6 +13609,7 @@ void moduleRegisterCoreAPI(void) {
     REGISTER_API(SetModuleAttribs);
     REGISTER_API(IsModuleNameBusy);
     REGISTER_API(WrongArity);
+    REGISTER_API(GetRunTimeArgs);
     REGISTER_API(ReplyWithLongLong);
     REGISTER_API(ReplyWithError);
     REGISTER_API(ReplyWithErrorFormat);
diff --git a/src/redismodule.h b/src/redismodule.h
index d692104d52..77b927ea46 100644
--- a/src/redismodule.h
+++ b/src/redismodule.h
@@ -334,6 +334,7 @@
 #define RedisModuleCommandInfo ValkeyModuleCommandInfo
 #define RedisModuleCommandKeySpec ValkeyModuleCommandKeySpec
 #define RedisModuleCommandHistoryEntry ValkeyModuleCommandHistoryEntry
+#define RedisModuleRunTimeArgs ValkeyModuleRunTimeArgs
 
 /* RedisModule APIs */
 #define RedisModule_OnLoad ValkeyModule_OnLoad
@@ -357,6 +358,7 @@
 #define RedisModule_SetModuleAttribs ValkeyModule_SetModuleAttribs
 #define RedisModule_IsModuleNameBusy ValkeyModule_IsModuleNameBusy
 #define RedisModule_WrongArity ValkeyModule_WrongArity
+#define RedisModule_GetRunTimeArgs ValkeyModule_GetRunTimeArgs
 #define RedisModule_ReplyWithLongLong ValkeyModule_ReplyWithLongLong
 #define RedisModule_GetSelectedDb ValkeyModule_GetSelectedDb
 #define RedisModule_SelectDb ValkeyModule_SelectDb
diff --git a/src/valkeymodule.h b/src/valkeymodule.h
index c2cdb2f0e7..b76d99f10b 100644
--- a/src/valkeymodule.h
+++ b/src/valkeymodule.h
@@ -147,6 +147,11 @@ typedef long long ustime_t;
 #define VALKEYMODULE_CONFIG_MEMORY (1ULL << 7)   /* Indicates if this value can be set as a memory value */
 #define VALKEYMODULE_CONFIG_BITFLAGS (1ULL << 8) /* Indicates if this value can be set as a multiple enum values */
 
+typedef struct ValkeyModuleRunTimeArgs {
+    int argc;
+    char **argv;
+} ValkeyModuleRunTimeArgs;
+
 /* StreamID type. */
 typedef struct ValkeyModuleStreamID {
     uint64_t ms;
@@ -967,6 +972,7 @@ VALKEYMODULE_API void (*ValkeyModule_SetModuleAttribs)(ValkeyModuleCtx *ctx, con
     VALKEYMODULE_ATTR;
 VALKEYMODULE_API int (*ValkeyModule_IsModuleNameBusy)(const char *name) VALKEYMODULE_ATTR;
 VALKEYMODULE_API int (*ValkeyModule_WrongArity)(ValkeyModuleCtx *ctx) VALKEYMODULE_ATTR;
+VALKEYMODULE_API struct ValkeyModuleRunTimeArgs *(*ValkeyModule_GetRunTimeArgs)(ValkeyModuleCtx *ctx)VALKEYMODULE_ATTR;
 VALKEYMODULE_API int (*ValkeyModule_ReplyWithLongLong)(ValkeyModuleCtx *ctx, long long ll) VALKEYMODULE_ATTR;
 VALKEYMODULE_API int (*ValkeyModule_GetSelectedDb)(ValkeyModuleCtx *ctx) VALKEYMODULE_ATTR;
 VALKEYMODULE_API int (*ValkeyModule_SelectDb)(ValkeyModuleCtx *ctx, int newid) VALKEYMODULE_ATTR;
@@ -1673,6 +1679,7 @@ static int ValkeyModule_Init(ValkeyModuleCtx *ctx, const char *name, int ver, in
     VALKEYMODULE_GET_API(SetModuleAttribs);
     VALKEYMODULE_GET_API(IsModuleNameBusy);
     VALKEYMODULE_GET_API(WrongArity);
+    VALKEYMODULE_GET_API(GetRunTimeArgs);
     VALKEYMODULE_GET_API(ReplyWithLongLong);
     VALKEYMODULE_GET_API(ReplyWithError);
     VALKEYMODULE_GET_API(ReplyWithErrorFormat);
diff --git a/tests/modules/moduleparameter.c b/tests/modules/moduleparameter.c
index 62d7c0cafc..0bd5ce3556 100644
--- a/tests/modules/moduleparameter.c
+++ b/tests/modules/moduleparameter.c
@@ -8,7 +8,12 @@ int GET_HELLO(ValkeyModuleCtx *ctx, ValkeyModuleString **argv, int argc) {
     VALKEYMODULE_NOT_USED(argv);
     VALKEYMODULE_NOT_USED(argc);
 
-    return ValkeyModule_ReplyWithSimpleString(ctx, "This is update module parameter test module");
+    ValkeyModuleRunTimeArgs *ret = ValkeyModule_GetRunTimeArgs(ctx);
+    ValkeyModule_Log(ctx, "warning", "dbsize command arg number is %d",
+                     ret->argc);
+    ValkeyModule_Log(ctx, "warning", "dbsize command arg 0 is %s",
+                     ret->argv[0]);
+    return ValkeyModule_ReplyWithSimpleString(ctx, "Module runtime args test");
 }
 
 int ValkeyModule_OnLoad(ValkeyModuleCtx *ctx, ValkeyModuleString **argv, int argc) {