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Motivation

We are in a situation where we want to tie some calls to some specific value/hash. There is a pallet-remark, but this only allows storing marks, without any relation to a call.

Using a batch, we could get that association. Supposing we want to tie ExtrinsicA to MarkA, we could do something like batch(ExtrinsicA, pallet_remark::store(MarkA)). Nevertheless, a possible indexer (i.e. Subscan) would need to inspect all extrinsic nested in batches in order to get the associations between the mark and the calls. We would want a fast solution to identify such relations.

Request

We need a more powerful extrinsic that allows us to remark a call. Something like:

fn remark_call(origin, call: RuntimeCall, remark: Remark) {
    call.dispatch()
    dispatch_event(remark)
}

This call should not be nested by batches to avoid an indexer going through all calls of a batch. An indexer would only need to identify those remark_call extrinsic at the top level.

Solution

We think we can add that remark_call to pallet-utilities, ensuring the batching method does not contain such extrinsic.

Are you willing to help with this request?

Yes!