Type Alias CursorOf

pub type CursorOf<T> = MigrationCursor<RawCursorOf<T>, BlockNumberFor<T>>;

Convenience alias for MigrationCursor.

Aliased Type

enum CursorOf<T> {
    Active(ActiveCursor<BoundedVec<u8, <T as Config>::CursorMaxLen>, <<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number>),
    Stuck,
}

Variants

Active(ActiveCursor<BoundedVec<u8, <T as Config>::CursorMaxLen>, <<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number>)

Points to the currently active migration and its inner cursor.

Stuck

Migration got stuck and cannot proceed. This is bad.

Implementations

impl<Cursor, BlockNumber> MigrationCursor<Cursor, BlockNumber>

pub fn as_active(&self) -> Option<&ActiveCursor<Cursor, BlockNumber>>

Try to return self as an ActiveCursor.

Trait Implementations

impl<Cursor: Clone, BlockNumber: Clone> Clone for MigrationCursor<Cursor, BlockNumber>

fn clone(&self) -> MigrationCursor<Cursor, BlockNumber>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<Cursor: Debug, BlockNumber: Debug> Debug for MigrationCursor<Cursor, BlockNumber>

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

Formats the value using the given formatter.

impl<Cursor, BlockNumber> Decode for MigrationCursor<Cursor, BlockNumber>

where ActiveCursor<Cursor, BlockNumber>: Decode,

fn decode<__CodecInputEdqy: Input>( __codec_input_edqy: &mut __CodecInputEdqy, ) -> Result<Self, Error>

Attempt to deserialise the value from input.

fn decode_into<I>( input: &mut I, dst: &mut MaybeUninit<Self>, ) -> Result<DecodeFinished, Error>

where I: Input,

Attempt to deserialize the value from input into a pre-allocated piece of memory.

fn skip<I>(input: &mut I) -> Result<(), Error>

where I: Input,

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

impl<Cursor, BlockNumber> Encode for MigrationCursor<Cursor, BlockNumber>

where ActiveCursor<Cursor, BlockNumber>: Encode,

fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding.

fn encode_to<__CodecOutputEdqy: Output + ?Sized>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy, )

Convert self to a slice and append it to the destination.

fn encode(&self) -> Vec<u8>

Convert self to an owned vector.

fn using_encoded<R, F>(&self, f: F) -> R

where F: FnOnce(&[u8]) -> R,

Convert self to a slice and then invoke the given closure with it.

fn encoded_size(&self) -> usize

Calculates the encoded size.

impl<Cursor, BlockNumber> From<ActiveCursor<Cursor, BlockNumber>> for MigrationCursor<Cursor, BlockNumber>

fn from(active: ActiveCursor<Cursor, BlockNumber>) -> Self

Converts to this type from the input type.

impl<Cursor, BlockNumber> MaxEncodedLen for MigrationCursor<Cursor, BlockNumber>

where ActiveCursor<Cursor, BlockNumber>: MaxEncodedLen,

fn max_encoded_len() -> usize

Upper bound, in bytes, of the maximum encoded size of this item.

impl<Cursor: PartialEq, BlockNumber: PartialEq> PartialEq for MigrationCursor<Cursor, BlockNumber>

fn eq(&self, other: &MigrationCursor<Cursor, BlockNumber>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<Cursor, BlockNumber> TypeInfo for MigrationCursor<Cursor, BlockNumber>

where ActiveCursor<Cursor, BlockNumber>: TypeInfo + 'static, Cursor: TypeInfo + 'static, BlockNumber: TypeInfo + 'static,

type Identity = MigrationCursor<Cursor, BlockNumber>

The type identifying for which type info is provided.

fn type_info() -> Type

Returns the static type identifier for Self.

impl<Cursor, BlockNumber> DecodeWithMemTracking for MigrationCursor<Cursor, BlockNumber>

where ActiveCursor<Cursor, BlockNumber>: DecodeWithMemTracking,

impl<Cursor, BlockNumber> EncodeLike for MigrationCursor<Cursor, BlockNumber>

where ActiveCursor<Cursor, BlockNumber>: Encode,

impl<Cursor: Eq, BlockNumber: Eq> Eq for MigrationCursor<Cursor, BlockNumber>

impl<Cursor, BlockNumber> StructuralPartialEq for MigrationCursor<Cursor, BlockNumber>