how to save a reference to lua state in case of use it in lua function

[yongman]

pub async fn redis_call(_lua: &Lua, arg: String) -> Result<String> {
    // ??get transanction reference from lua ??
    Ok(arg)
}

pub fn register_redis_func(lua: &Lua) -> Result<()> {
    let globals = lua.globals();

    // create redis.* commands table
    let redis = lua.create_table()?;
    let redis_call = lua.create_async_function(redis_call)?;
    redis.set("call", redis_call)?;

    // register to global table
    globals.set("redis", redis)?;

   // ??save transaction reference to lua ??

    Ok(())
}

Like the code shows, redis.call will be called in lua script, but I want the lua execute in the same transaction, so how can I save the transaction reference to lua for later use in function redis_call?

[khvzak]

what is "transaction reference"?

[yongman]

what is "transaction reference"?

It's just an outside object reference, I just want to use it in the lua function.

[yongman]

I have used rust closure to capture the reference to solve this.
Mark this answered.