Struct mz_persist_client::internal::state::HollowRunRef

pub struct HollowRunRef<T> {
    pub key: PartialBatchKey,
    pub hollow_bytes: usize,
    pub max_part_bytes: usize,
    pub key_lower: Vec<u8>,
    pub structured_key_lower: Option<LazyProto<ProtoArrayData>>,
    pub(crate) _phantom_data: PhantomData<T>,
}

A reference to a HollowRun, including the key in the blob store and some denormalized metadata.

Fields

key: PartialBatchKey

hollow_bytes: usize

The size of the referenced run object, plus all of the hollow objects it contains.

max_part_bytes: usize

The size of the largest individual part in the run; useful for sizing compaction.

key_lower: Vec<u8>

The lower bound of the data in this part, ordered by the codec ordering.

structured_key_lower: Option<LazyProto<ProtoArrayData>>

The lower bound of the data in this part, ordered by the structured ordering.

_phantom_data: PhantomData<T>

Implementations

impl<T> HollowRunRef<T>

pub fn writer_key(&self) -> Option<WriterKey>

impl<T: Timestamp + Codec64> HollowRunRef<T>

pub async fn set( shard_id: ShardId, blob: &dyn Blob, writer: &WriterKey, data: HollowRun<T>, metrics: &Metrics, ) -> Self

Stores the given runs and returns a HollowRunRef that points to them.

pub async fn get( &self, shard_id: ShardId, blob: &dyn Blob, metrics: &Metrics, ) -> Option<HollowRun<T>>

Retrieve the HollowRun that this reference points to. The caller is expected to ensure that this ref is the result of calling HollowRunRef::set with the same shard id and backing store.

Trait Implementations

impl<T: Clone> Clone for HollowRunRef<T>

fn clone(&self) -> HollowRunRef<T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for HollowRunRef<T>

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

Formats the value using the given formatter.

impl<T: Eq> Ord for HollowRunRef<T>

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl<T: PartialEq> PartialEq for HollowRunRef<T>

fn eq(&self, other: &HollowRunRef<T>) -> 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<T: Eq> PartialOrd for HollowRunRef<T>

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<T: Timestamp + Codec64> RustType<ProtoHollowBatchPart> for HollowRunRef<T>

fn into_proto(&self) -> ProtoHollowBatchPart

Convert a Self into a Proto value.

fn from_proto(proto: ProtoHollowBatchPart) -> Result<Self, TryFromProtoError>

Consume and convert a Proto back into a Self value.

fn into_proto_owned(self) -> Proto

A zero clone version of Self::into_proto that types can optionally implement, otherwise, the default implementation delegates to Self::into_proto.

impl<T> Serialize for HollowRunRef<T>

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<T: Eq> Eq for HollowRunRef<T>

impl<T> StructuralPartialEq for HollowRunRef<T>