Struct GroupScopedSnapshot

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pub struct GroupScopedSnapshot { /* private fields */ }

Expand description

A group-scoped snapshot that only contains data for a single group.

Unlike MemoryStorageSnapshot which captures all data in the storage, this snapshot only captures data relevant to a specific group. This enables proper rollback isolation where rolling back Group A doesn’t affect Group B.

This matches the behavior of SQLite’s group-scoped snapshots where:

snapshot_group_state() only copies rows WHERE group_id = ?
restore_group_from_snapshot() only deletes/restores rows for that group

§Group-Scoped Data

The following data is captured per group:

MLS group data (tree state, join config, etc.)
MLS own leaf nodes for this group
MLS proposals for this group
MLS epoch key pairs for this group
MDK group record
MDK group relays
MDK group exporter secrets

The following data is NOT captured (not group-scoped):

MLS key packages (identity-scoped, not group-scoped)
MLS PSKs (identity-scoped, not group-scoped)
MLS signature keys (identity-scoped, not group-scoped)
MLS encryption keys (identity-scoped, not group-scoped)
Messages (handled separately via invalidate_messages_after_epoch)
Welcomes (keyed by EventId, not group-scoped)

Trait Implementations§

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impl Clone for GroupScopedSnapshot

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fn clone(&self) -> GroupScopedSnapshot

Returns a duplicate of the value. Read more

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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

Auto Trait Implementations§

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impl UnwindSafe for GroupScopedSnapshot

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. Read more

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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