Implement rsmt tree wrapper for nmt #238
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evan-forbes
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| // if the data is erasure data use the parity ns | ||
| default: | ||
| copy(nsID, types.ParitySharesNamespaceID) |
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Note that when celestiaorg/nmt#27 lands, and if we attach the parity nID when calling Push, then this method can be simplified to just calling push on the underlying NMT, right?
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Unfortunately we will still need a wrapper, because rsmt2d.RepairExtendedDatasquare is not aware of how we erasure namespaces and NamespacedMerkleTree would always assume that the first 8 bytes is the namespace. Now that we're erasuring namespaces, the first 8 bytes of the the 2nd half of the tree is not a namespace, it's just erasure data. nmt.Push would panic.
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Now that we're erasuring namespaces, the first 8 bytes of the the 2nd half of the tree is not a namespace,
I might still be missing something but why can't the caller of the NMT do the "preprocessing" and add the parity namespace in front of the parity shares (basically the same thing the wrapper currently does)? The tree (wrapper) would then not need any counter bc the calling code already knows when the erasured part starts.
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We can do that in lazyledger-core, but we would also have to do that in rsmt2d.RepairDataSquare.
Co-authored-by: John Adler <[email protected]>
Co-authored-by: John Adler <[email protected]>
Description
This PR was mostly taken from the closed PR from nmt. As mentioned in the comments their, it makes more sense to keep the lazyledger-core login in lazyledger-core. This PR should be merged before for #235 and #232.
Closes: #237