Comments (2)
Borsh does not include the schema inside the serialized data, so you should plan your upgradability accordingly. If you start from scratch, you have two paths:
- keep versioned data structured using enum (
enum MyStruct { V1(MyStructV1) }
), which will add a one byte tag as part of the borsh serialization for enums, here is an example - plan to keep the data always at the latest state and as such, implement migration logic that would read all the old data using old structs, convert those into the new structs, and write it over using, here is an example
If you already have the data serialized with the old MyStruct
, you can follow (2) and consider to implement (1) for seamless operation going forward.
Would you like to contribute a README/docs for this topic? I would be happy to review a PR
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Seems to be related: #114
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Related Issues (20)
- Security Policy violation SECURITY.md HOT 2
- Restriction on Serializing Zero-Sized Types Affects Marker Component Usage HOT 7
- derive BoshSerialize fails if the type already uses `W` generic name HOT 4
- BorshSerialize derive fails for structs with packed attribute HOT 4
- Should `std` feature imply `rc` feature and vice-versa? HOT 4
- Read/Write mutable reference in `serialize` and `deserialize_reader` is unnecessary HOT 8
- `derive` macros require `cargo` to be present HOT 4
- Old NEAR contracts won't compile with the new `borsh` re-exported from `near-sdk-rs` ("Could not find `borsh`") HOT 5
- equivalent of `#[serde(default)]` HOT 2
- Borsh 2.0? Not planned HOT 2
- Extract `alloc` feature (2.0 candidate) HOT 1
- `bytes::Bytes` and `bytes::BytesMut` can be complemented with `BorshSchema`
- `bson::oid::ObjectId` can be complemented with `BorshSchema`
- Add struct/enum attr to relax bounds
- feat(schema): for chars HOT 4
- feat(schema): support serde of HashMap with S hasher
- Can't serialize a `Vec<ZST>`, but it appears that the attack is only on deserialization HOT 1
- blanket implementation of `BorshSchema` for `&T` (where `T: BorshSchema`)
- Replace `schema_map!` tests with `insta` snapshots
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