Enum sc_light::backend::GenesisOrUnavailableState

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pub enum GenesisOrUnavailableState<H: Hasher> {
    Genesis(InMemoryBackend<H>),
    Unavailable,
}

Expand description

Either in-memory genesis state, or locally-unavailable state.

Variants

`Genesis(InMemoryBackend<H>)`

Genesis state - storage values are stored in-memory.

`Unavailable`

We know that state exists, but all calls will fail with error, because it isn’t locally available.

Trait Implementations

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impl<H: Hasher> Backend<H> for GenesisOrUnavailableState<H> where
H::Out: Ord + Codec,

type Error = ClientError

An error type when fetching data is not possible.

type Transaction = <InMemoryBackend<H> as StateBackend<H>>::Transaction

Storage changes to be applied if committing

type TrieBackendStorage = <InMemoryBackend<H> as StateBackend<H>>::TrieBackendStorage

Type of trie backend storage.

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fn storage(&self, key: &[u8 ]) -> ClientResult<Option<Vec<u8>>>

Get keyed storage or None if there is nothing associated.

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fn child_storage(
 &self,
 child_info: &ChildInfo,
 key: &[u8 ]
) -> ClientResult<Option<Vec<u8>>>

Get keyed child storage or None if there is nothing associated.

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fn next_storage_key(&self, key: &[u8 ]) -> Result<Option<Vec<u8>>, Self::Error>

Return the next key in storage in lexicographic order or None if there is no value.

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fn next_child_storage_key(
 &self,
 child_info: &ChildInfo,
 key: &[u8 ]
) -> Result<Option<Vec<u8>>, Self::Error>

Return the next key in child storage in lexicographic order or None if there is no value.

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fn for_keys_with_prefix<A: FnMut(&[u8 ])>(&self, prefix: &[u8 ], action: A)

Retrieve all entries keys which start with the given prefix and call f for each of those keys. Read more

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fn for_key_values_with_prefix<A: FnMut(&[u8 ], &[u8 ])>(
 &self,
 prefix: &[u8 ],
 action: A
)

Retrieve all entries keys and values of which start with the given prefix and call f for each of those keys. Read more

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fn apply_to_child_keys_while<A: FnMut(&[u8 ]) -> bool>(
 &self,
 child_info: &ChildInfo,
 action: A
)

Retrieve all entries keys of child storage and call f for each of those keys. Aborts as soon as f returns false. Read more

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fn for_child_keys_with_prefix<A: FnMut(&[u8 ])>(
 &self,
 child_info: &ChildInfo,
 prefix: &[u8 ],
 action: A
)

Retrieve all child entries keys which start with the given prefix and call f for each of those keys. Read more

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fn storage_root<'a>(
 &self,
 delta: impl Iterator<Item = (&'a [u8 ], Option<&'a [u8 ]>)>
) -> (H::Out, Self::Transaction ) where
 H::Out: Ord,

Calculate the storage root, with given delta over what is already stored in the backend, and produce a “transaction” that can be used to commit. Does not include child storage updates. Read more

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fn child_storage_root<'a>(
 &self,
 child_info: &ChildInfo,
 delta: impl Iterator<Item = (&'a [u8 ], Option<&'a [u8 ]>)>
) -> (H::Out, bool, Self::Transaction ) where
 H::Out: Ord,

Calculate the child storage root, with given delta over what is already stored in the backend, and produce a “transaction” that can be used to commit. The second argument is true if child storage root equals default storage root. Read more

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fn pairs(&self) -> Vec<(Vec<u8>, Vec<u8>)>ⓘNotable traits for Vec<u8, A>`impl<A> Write for Vec<u8, A> where A: Allocator,`

Get all key/value pairs into a Vec.

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fn keys(&self, prefix: &[u8 ]) -> Vec<Vec<u8>>ⓘNotable traits for Vec<u8, A>`impl<A> Write for Vec<u8, A> where A: Allocator,`

Get all keys with given prefix

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fn register_overlay_stats(&mut self, _stats: &StateMachineStats)

Register stats from overlay of state machine. Read more

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fn usage_info(&self) -> UsageInfo

Query backend usage statistics (i/o, memory) Read more

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fn as_trie_backend(
&mut self
) -> Option<&TrieBackend<Self::TrieBackendStorage, H>>

Try convert into trie backend.

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fn storage_hash(
&self,
key: &[u8 ]
) -> Result<Option<<H as Hasher>::Out>, Self::Error>

Get keyed storage value hash or None if there is nothing associated.

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fn child_storage_hash(
 &self,
 child_info: &ChildInfo,
 key: &[u8 ]
) -> Result<Option<<H as Hasher>::Out>, Self::Error>

Get child keyed storage value hash or None if there is nothing associated.

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fn exists_storage(&self, key: &[u8 ]) -> Result<bool, Self::Error>

true if a key exists in storage.

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fn exists_child_storage(
 &self,
 child_info: &ChildInfo,
 key: &[u8 ]
) -> Result<bool, Self::Error>

true if a key exists in child storage.

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fn child_keys(
 &self,
 child_info: &ChildInfo,
 prefix: &[u8 ]
) -> Vec<Vec<u8, Global>, Global>ⓘNotable traits for Vec<u8, A>`impl<A> Write for Vec<u8, A> where A: Allocator,`

Get all keys of child storage with given prefix

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fn full_storage_root<'a>(
 &self,
 delta: impl Iterator<Item = (&'a [u8 ], Option<&'a [u8 ]>)>,
 child_deltas: impl Iterator<Item = (&'a ChildInfo, impl Iterator<Item = (&'a [u8 ], Option<&'a [u8 ]>)>)>
) -> (<H as Hasher>::Out, Self::Transaction ) where
 <H as Hasher>::Out: Ord,
 <H as Hasher>::Out: Encode,

Calculate the storage root, with given delta over what is already stored in the backend, and produce a “transaction” that can be used to commit. Does include child storage updates. Read more

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fn wipe(&self) -> Result<(), Self::Error>

Wipe the state database.

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fn commit(
 &self,
 <H as Hasher>::Out,
 Self::Transaction,
 Vec<(Vec<u8, Global>, Option<Vec<u8, Global>>), Global>,
 Vec<(Vec<u8, Global>, Vec<(Vec<u8, Global>, Option<Vec<u8, Global>>), Global>), Global>
) -> Result<(), Self::Error>

Commit given transaction to storage.

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fn read_write_count(&self) -> (u32, u32, u32, u32 )

Get the read/write count of the db

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fn reset_read_write_count(&self)

Get the read/write count of the db

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fn get_whitelist(&self) -> Vec<TrackedStorageKey, Global>ⓘNotable traits for Vec<u8, A>`impl<A> Write for Vec<u8, A> where A: Allocator,`

Get the whitelist for tracking db reads/writes

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fn set_whitelist(&self, Vec<TrackedStorageKey, Global>)

Update the whitelist for tracking db reads/writes

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impl<H: Hasher> Debug for GenesisOrUnavailableState<H>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

Auto Trait Implementations

impl<H> RefUnwindSafe for GenesisOrUnavailableState<H> where
H: RefUnwindSafe,
<H as Hasher>::Out: RefUnwindSafe,

impl<H> Send for GenesisOrUnavailableState<H>

impl<H> Sync for GenesisOrUnavailableState<H>

impl<H> Unpin for GenesisOrUnavailableState<H> where
H: Unpin,
<H as Hasher>::Out: Unpin,

impl<H> UnwindSafe for GenesisOrUnavailableState<H> where
H: UnwindSafe,
<H as Hasher>::Out: UnwindSafe,

Blanket Implementations

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

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pub 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,

const: unstable · source

pub 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,

const: unstable · source

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

Mutably borrows from an owned value. Read more

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impl<T> CheckedConversion for T

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fn checked_from<T>(t: T) -> Option<Self> where
Self: TryFrom<T>,

Convert from a value of T into an equivalent instance of Option<Self>. Read more

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fn checked_into<T>(self) -> Option<T> where
Self: TryInto<T>,

Consume self to return Some equivalent value of Option<T>. Read more

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impl<T> From<T> for T

const: unstable · source

pub fn from(t: T) -> T

Returns the argument unchanged.

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impl<H, B> InspectState<H, B> for B where
H: Hasher,
B: Backend<H>,

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pub fn inspect_state<F, R>(&self, f: F) -> R where
F: FnOnce() -> R,

Inspect state with a closure. Read more

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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

const: unstable · source

pub 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, Outer> IsWrappedBy<Outer> for T where
Outer: AsRef<T> + AsMut<T> + From<T>,
T: From<Outer>,

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pub fn from_ref(outer: &Outer) -> &T

Get a reference to the inner from the outer.

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pub fn from_mut(outer: &mut Outer) -> &mut T

Get a mutable reference to the inner from the outer.

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impl<T> Pointable for T

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pub const ALIGN: usize

The alignment of pointer.

type Init = T

The type for initializers.

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pub unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more

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pub unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more

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pub unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more

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pub unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more

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impl<T> Same<T> for T

type Output = T

Should always be Self

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impl<T> SaturatedConversion for T

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fn saturated_from<T>(t: T) -> Self where
Self: UniqueSaturatedFrom<T>,

Convert from a value of T into an equivalent instance of Self. Read more

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fn saturated_into<T>(self) -> T where
Self: UniqueSaturatedInto<T>,

Consume self to return an equivalent value of T. Read more

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

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impl<S, T> UncheckedInto<T> for S where
T: UncheckedFrom<S>,

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pub fn unchecked_into(self) -> T

The counterpart to unchecked_from.

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impl<T, S> UniqueSaturatedInto<T> for S where
T: Bounded,
S: TryInto<T>,

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pub fn unique_saturated_into(self) -> T

Consume self to return an equivalent value of T.

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more

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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more

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impl<T> MaybeDebug for T where
T: Debug,

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impl<T> MaybeDebug for T where
T: Debug,

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Enum sc_light::backend::GenesisOrUnavailableState

Variants

Genesis(InMemoryBackend<H>)

Unavailable

Trait Implementations

impl<H: Hasher> Backend<H> for GenesisOrUnavailableState<H> where H::Out: Ord + Codec,

type Error = ClientError

type Transaction = <InMemoryBackend<H> as StateBackend<H>>::Transaction

type TrieBackendStorage = <InMemoryBackend<H> as StateBackend<H>>::TrieBackendStorage

fn storage(&self, key: &[u8]) -> ClientResult<Option<Vec<u8>>>

fn child_storage( &self, child_info: &ChildInfo, key: &[u8]) -> ClientResult<Option<Vec<u8>>>

fn next_storage_key(&self, key: &[u8]) -> Result<Option<Vec<u8>>, Self::Error>

fn next_child_storage_key( &self, child_info: &ChildInfo, key: &[u8]) -> Result<Option<Vec<u8>>, Self::Error>

fn for_keys_with_prefix<A: FnMut(&[u8])>(&self, prefix: &[u8], action: A)

fn for_key_values_with_prefix<A: FnMut(&[u8], &[u8])>( &self, prefix: &[u8], action: A)

fn apply_to_child_keys_while<A: FnMut(&[u8]) -> bool>( &self, child_info: &ChildInfo, action: A)

fn for_child_keys_with_prefix<A: FnMut(&[u8])>( &self, child_info: &ChildInfo, prefix: &[u8], action: A)

fn storage_root<'a>( &self, delta: impl Iterator<Item = (&'a [u8], Option<&'a [u8]>)>) -> (H::Out, Self::Transaction) where H::Out: Ord,

fn child_storage_root<'a>( &self, child_info: &ChildInfo, delta: impl Iterator<Item = (&'a [u8], Option<&'a [u8]>)>) -> (H::Out, bool, Self::Transaction) where H::Out: Ord,

fn pairs(&self) -> Vec<(Vec<u8>, Vec<u8>)>ⓘNotable traits for Vec<u8, A>impl<A> Write for Vec<u8, A> where A: Allocator,

fn keys(&self, prefix: &[u8]) -> Vec<Vec<u8>>ⓘNotable traits for Vec<u8, A>impl<A> Write for Vec<u8, A> where A: Allocator,

fn register_overlay_stats(&mut self, _stats: &StateMachineStats)

fn usage_info(&self) -> UsageInfo

fn as_trie_backend( &mut self) -> Option<&TrieBackend<Self::TrieBackendStorage, H>>

fn storage_hash( &self, key: &[u8]) -> Result<Option<<H as Hasher>::Out>, Self::Error>

fn child_storage_hash( &self, child_info: &ChildInfo, key: &[u8]) -> Result<Option<<H as Hasher>::Out>, Self::Error>

fn exists_storage(&self, key: &[u8]) -> Result<bool, Self::Error>

fn exists_child_storage( &self, child_info: &ChildInfo, key: &[u8]) -> Result<bool, Self::Error>

fn child_keys( &self, child_info: &ChildInfo, prefix: &[u8]) -> Vec<Vec<u8, Global>, Global>ⓘNotable traits for Vec<u8, A>impl<A> Write for Vec<u8, A> where A: Allocator,

fn full_storage_root<'a>( &self, delta: impl Iterator<Item = (&'a [u8], Option<&'a [u8]>)>, child_deltas: impl Iterator<Item = (&'a ChildInfo, impl Iterator<Item = (&'a [u8], Option<&'a [u8]>)>)>) -> (<H as Hasher>::Out, Self::Transaction) where <H as Hasher>::Out: Ord, <H as Hasher>::Out: Encode,

fn wipe(&self) -> Result<(), Self::Error>

fn commit( &self, <H as Hasher>::Out, Self::Transaction, Vec<(Vec<u8, Global>, Option<Vec<u8, Global>>), Global>, Vec<(Vec<u8, Global>, Vec<(Vec<u8, Global>, Option<Vec<u8, Global>>), Global>), Global>) -> Result<(), Self::Error>

fn read_write_count(&self) -> (u32, u32, u32, u32)

fn reset_read_write_count(&self)

fn get_whitelist(&self) -> Vec<TrackedStorageKey, Global>ⓘNotable traits for Vec<u8, A>impl<A> Write for Vec<u8, A> where A: Allocator,

fn set_whitelist(&self, Vec<TrackedStorageKey, Global>)

impl<H: Hasher> Debug for GenesisOrUnavailableState<H>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Auto Trait Implementations

impl<H> RefUnwindSafe for GenesisOrUnavailableState<H> where H: RefUnwindSafe, <H as Hasher>::Out: RefUnwindSafe,

impl<H> Send for GenesisOrUnavailableState<H>

impl<H> Sync for GenesisOrUnavailableState<H>

impl<H> Unpin for GenesisOrUnavailableState<H> where H: Unpin, <H as Hasher>::Out: Unpin,

impl<H> UnwindSafe for GenesisOrUnavailableState<H> where H: UnwindSafe, <H as Hasher>::Out: UnwindSafe,

Blanket Implementations

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

pub fn type_id(&self) -> TypeId

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

pub fn borrow(&self) -> &T

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

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

impl<T> CheckedConversion for T

fn checked_from<T>(t: T) -> Option<Self> where Self: TryFrom<T>,

fn checked_into<T>(self) -> Option<T> where Self: TryInto<T>,

impl<T> From<T> for T

pub fn from(t: T) -> T

impl<H, B> InspectState<H, B> for B where H: Hasher, B: Backend<H>,

pub fn inspect_state<F, R>(&self, f: F) -> R where F: FnOnce() -> R,

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>

fn in_current_span(self) -> Instrumented<Self>

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>

fn in_current_span(self) -> Instrumented<Self>

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

pub fn into(self) -> U

impl<T, Outer> IsWrappedBy<Outer> for T where Outer: AsRef<T> + AsMut<T> + From<T>, T: From<Outer>,

pub fn from_ref(outer: &Outer) -> &T

pub fn from_mut(outer: &mut Outer) -> &mut T

impl<T> Pointable for T

pub const ALIGN: usize

type Init = T

pub unsafe fn init(init: <T as Pointable>::Init) -> usize

pub unsafe fn deref<'a>(ptr: usize) -> &'a T

pub unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

pub unsafe fn drop(ptr: usize)

impl<T> Same<T> for T

type Output = T

impl<T> SaturatedConversion for T

fn saturated_from<T>(t: T) -> Self where Self: UniqueSaturatedFrom<T>,

`Genesis(InMemoryBackend<H>)`

`Unavailable`

impl<H: Hasher> Backend<H> for GenesisOrUnavailableState<H> where
H::Out: Ord + Codec,

fn storage(&self, key: &[u8 ]) -> ClientResult<Option<Vec<u8>>>

fn child_storage(
&self,
child_info: &ChildInfo,
key: &[u8 ]
) -> ClientResult<Option<Vec<u8>>>

fn next_storage_key(&self, key: &[u8 ]) -> Result<Option<Vec<u8>>, Self::Error>

fn next_child_storage_key(
&self,
child_info: &ChildInfo,
key: &[u8 ]
) -> Result<Option<Vec<u8>>, Self::Error>

fn for_keys_with_prefix<A: FnMut(&[u8 ])>(&self, prefix: &[u8 ], action: A)

fn for_key_values_with_prefix<A: FnMut(&[u8 ], &[u8 ])>(
&self,
prefix: &[u8 ],
action: A
)

fn apply_to_child_keys_while<A: FnMut(&[u8 ]) -> bool>(
&self,
child_info: &ChildInfo,
action: A
)

fn for_child_keys_with_prefix<A: FnMut(&[u8 ])>(
&self,
child_info: &ChildInfo,
prefix: &[u8 ],
action: A
)

fn storage_root<'a>(
&self,
delta: impl Iterator<Item = (&'a [u8 ], Option<&'a [u8 ]>)>
) -> (H::Out, Self::Transaction ) where
H::Out: Ord,

fn child_storage_root<'a>(
&self,
child_info: &ChildInfo,
delta: impl Iterator<Item = (&'a [u8 ], Option<&'a [u8 ]>)>
) -> (H::Out, bool, Self::Transaction ) where
H::Out: Ord,

fn pairs(&self) -> Vec<(Vec<u8>, Vec<u8>)>ⓘNotable traits for Vec<u8, A>`impl<A> Write for Vec<u8, A> where A: Allocator,`

fn keys(&self, prefix: &[u8 ]) -> Vec<Vec<u8>>ⓘNotable traits for Vec<u8, A>`impl<A> Write for Vec<u8, A> where A: Allocator,`

fn as_trie_backend(
&mut self
) -> Option<&TrieBackend<Self::TrieBackendStorage, H>>

fn storage_hash(
&self,
key: &[u8 ]
) -> Result<Option<<H as Hasher>::Out>, Self::Error>

fn child_storage_hash(
&self,
child_info: &ChildInfo,
key: &[u8 ]
) -> Result<Option<<H as Hasher>::Out>, Self::Error>

fn exists_storage(&self, key: &[u8 ]) -> Result<bool, Self::Error>

fn exists_child_storage(
&self,
child_info: &ChildInfo,
key: &[u8 ]
) -> Result<bool, Self::Error>

fn child_keys(
&self,
child_info: &ChildInfo,
prefix: &[u8 ]
) -> Vec<Vec<u8, Global>, Global>ⓘNotable traits for Vec<u8, A>`impl<A> Write for Vec<u8, A> where A: Allocator,`

fn commit(
&self,
<H as Hasher>::Out,
Self::Transaction,
Vec<(Vec<u8, Global>, Option<Vec<u8, Global>>), Global>,
Vec<(Vec<u8, Global>, Vec<(Vec<u8, Global>, Option<Vec<u8, Global>>), Global>), Global>
) -> Result<(), Self::Error>

fn read_write_count(&self) -> (u32, u32, u32, u32 )

fn get_whitelist(&self) -> Vec<TrackedStorageKey, Global>ⓘNotable traits for Vec<u8, A>`impl<A> Write for Vec<u8, A> where A: Allocator,`

impl<H> RefUnwindSafe for GenesisOrUnavailableState<H> where
H: RefUnwindSafe,
<H as Hasher>::Out: RefUnwindSafe,

impl<H> Unpin for GenesisOrUnavailableState<H> where
H: Unpin,
<H as Hasher>::Out: Unpin,

impl<H> UnwindSafe for GenesisOrUnavailableState<H> where
H: UnwindSafe,
<H as Hasher>::Out: UnwindSafe,

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

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

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

fn checked_from<T>(t: T) -> Option<Self> where
Self: TryFrom<T>,

fn checked_into<T>(self) -> Option<T> where
Self: TryInto<T>,

impl<H, B> InspectState<H, B> for B where
H: Hasher,
B: Backend<H>,

pub fn inspect_state<F, R>(&self, f: F) -> R where
F: FnOnce() -> R,

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

impl<T, Outer> IsWrappedBy<Outer> for T where
Outer: AsRef<T> + AsMut<T> + From<T>,
T: From<Outer>,

fn saturated_from<T>(t: T) -> Self where
Self: UniqueSaturatedFrom<T>,

fn saturated_into<T>(self) -> T where
Self: UniqueSaturatedInto<T>,

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

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

impl<S, T> UncheckedInto<T> for S where
T: UncheckedFrom<S>,

impl<T, S> UniqueSaturatedInto<T> for S where
T: Bounded,
S: TryInto<T>,

impl<V, T> VZip<V> for T where
V: MultiLane<T>,

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,

impl<T> MaybeDebug for T where
T: Debug,

impl<T> MaybeDebug for T where
T: Debug,

impl<T> MaybeRefUnwindSafe for T where
T: RefUnwindSafe,