Struct mz_persist::indexed::encoding::TraceBatchMeta

pub struct TraceBatchMeta {
    pub keys: Vec<String>,
    pub format: ProtoBatchFormat,
    pub desc: Description<u64>,
    pub level: u64,
    pub size_bytes: u64,
}

The metadata necessary to reconstruct a list of BlobTraceBatchParts.

Invariants:

• The Description’s time interval is non-empty.
• Keys for all trace batch parts are unique.
• Keys for all trace batch parts are stored in index order.
• The data in all of the trace batch parts is sorted and consolidated.
• All of the trace batch parts have the same desc as the metadata.

Fields

keys: Vec<String>

The keys to retrieve the batch’s data from the blob store.

The set of keys can be empty to denote an empty batch.

format: ProtoBatchFormat

The format of the stored batch data.

desc: Description<u64>

The half-open time interval [lower, upper) this batch contains data for.

level: u64

The compaction level of each batch.

size_bytes: u64

Size of the encoded batch.

Implementations

impl TraceBatchMeta

pub fn validate(&self) -> Result<(), Error>

Asserts Self’s documented invariants, returning an error if any are violated.

pub async fn validate_data( &self, blob: &dyn Blob, metrics: &ColumnarMetrics, ) -> Result<(), Error>

Assert that all of the BlobTraceBatchPart’s obey the required invariants.

Trait Implementations

impl Clone for TraceBatchMeta

fn clone(&self) -> TraceBatchMeta

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TraceBatchMeta

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

Formats the value using the given formatter.

impl PartialEq for TraceBatchMeta

fn eq(&self, other: &TraceBatchMeta) -> 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 Eq for TraceBatchMeta

impl StructuralPartialEq for TraceBatchMeta