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Added boilerplate for Bonsai storage migration #70
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Bonsai trie handlers no longer access the db at a given state and instead only serve to view or mutate the latest state.
`get_at` functions similarly to calling `storage_handler::storage_at().get()` but is faster since it only reverts the state for a given key.
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Ok(Some(block_number)) => block_number, | ||
_ => get_highest_block_hash_and_number().1, | ||
}, | ||
BlockId::Tag(_) => get_highest_block_hash_and_number().1, |
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Pull Request type
What is the current behavior?
Currently, Deoxys relies heavily on the Substrate runtime storage. This poses issues as it was designed for sparse usage, and is not pertinent for the storage of data which is not consensus-critical. Furthermore, use of the Substrate runtime storage and the associated
StorageOverride
s built on top has lead to a convoluted use of storage which is hard to reason about.What is the new behavior?
crates/client/src/storage_handler
for accessing storage statically and outside of the Substrate runtime.BonsaiStorage
andRevertibleStorage
viastorage_handler
. This inculdes the following mappings:block_number
->block_hash
block_hash
->block_number
contract_address
->class_hash
&nonce
class_hash
->contract_abi
&contract_class
class_hash
->compiled_class_hash
on_initialized
is no longer used for storing data. Any related logic, such as serializing data to communicate it to the runtime for storage, have been removed. Storage updates are now handled as part ofl2.rs
.StorageOverride
from the code base.Does this introduce a breaking change?
Yes. Any node already running will have to be re-run from the block 0 to update the new databases.
Other information
Note that this is PR mostly introduces the boilerplate necessary for a full migration to Bonsai lib storage. Further improvements remain to be made:
Nonces
in the db in some special cases.Please keep these points in mind as you review this PR.