soroban_env_host::storage

Struct Footprint

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pub struct Footprint(pub FootprintMap);
Expand description

Describes the total set of LedgerKeys that a given transaction will access, as well as the AccessType governing each key.

A Footprint must be provided in order to run a transaction that accesses any LedgerKeys in FootprintMode::Enforcing. If a transaction has an unknown Footprint it can be calculated by running a “preflight” execution in FootprintMode::Recording, against a suitably fresh SnapshotSource.

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§0: FootprintMap

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impl Footprint

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pub fn record_access( &mut self, key: &Rc<LedgerKey>, ty: AccessType, budget: &Budget, ) -> Result<(), HostError>

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pub fn enforce_access( &mut self, key: &Rc<LedgerKey>, ty: AccessType, budget: &Budget, ) -> Result<(), HostError>

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impl Clone for Footprint

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fn clone(&self) -> Footprint

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Default for Footprint

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fn default() -> Footprint

Returns the “default value” for a type. Read more
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impl Hash for Footprint

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more

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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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where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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fn borrow_mut(&mut self) -> &mut T

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impl<T> CloneToUninit for T
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unsafe fn clone_to_uninit(&self, dst: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
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impl<T, C> Compare<&T> for C
where C: Compare<T>,

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type Error = <C as Compare<T>>::Error

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impl<T, U, E, C> Compare<(T, U)> for C
where C: Compare<T, Error = E, Error = E> + Compare<U>,

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type Error = E

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fn compare( &self, a: &(T, U), b: &(T, U), ) -> Result<Ordering, <C as Compare<(T, U)>>::Error>

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impl<T, U, V, E, C> Compare<(T, U, V)> for C
where C: Compare<T, Error = E, Error = E, Error = E> + Compare<U> + Compare<V>,

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type Error = E

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fn compare( &self, a: &(T, U, V), b: &(T, U, V), ) -> Result<Ordering, <C as Compare<(T, U, V)>>::Error>

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impl<T, U, V, W, E, C> Compare<(T, U, V, W)> for C
where C: Compare<T, Error = E, Error = E, Error = E, Error = E> + Compare<U> + Compare<V> + Compare<W>,

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type Error = E

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fn compare( &self, a: &(T, U, V, W), b: &(T, U, V, W), ) -> Result<Ordering, <C as Compare<(T, U, V, W)>>::Error>

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impl<T, U, V, W, X, E, C> Compare<(T, U, V, W, X)> for C
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type Error = E

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fn compare( &self, a: &(T, U, V, W, X), b: &(T, U, V, W, X), ) -> Result<Ordering, <C as Compare<(T, U, V, W, X)>>::Error>

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type Error = <C as Compare<T>>::Error

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impl<T, C> Compare<Option<T>> for C
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type Error = <C as Compare<T>>::Error

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fn compare( &self, a: &Option<T>, b: &Option<T>, ) -> Result<Ordering, <C as Compare<Option<T>>>::Error>

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impl<T, C> Compare<Rc<T>> for C
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type Error = <C as Compare<T>>::Error

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impl<T, C> Compare<Vec<T>> for C
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