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MetaTagDecode

Enum MetaTagDecode 

Source
pub enum MetaTagDecode {
    Absent,
    Decoded(RecordedSnapshotMeta),
    UnsupportedSchema {
        schema: i64,
    },
    Malformed {
        reason: String,
    },
}
Expand description

What decode_meta_tag found in a snapshot’s tags map. Never an Err: a bad tag value is repository data and must degrade, not fail a scan.

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Absent

No kopiur-meta tag on the snapshot (pre-feature or foreign backup).

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Decoded(RecordedSnapshotMeta)

A well-formed, supported-schema value.

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UnsupportedSchema

A well-formed value written under a schema newer than this reader understands — degrade to recorded-absent (aggregate-count the event).

Fields

§schema: i64

The schema number the writer declared.

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Malformed

The tag value is present but not decodable (bad JSON, missing/invalid schema or src). Degrade to recorded-absent (aggregate-count it).

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§reason: String

A short, bounded reason for the scan’s aggregated diagnostics.

Trait Implementations§

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impl Clone for MetaTagDecode

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fn clone(&self) -> MetaTagDecode

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for MetaTagDecode

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

Formats the value using the given formatter. Read more
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impl PartialEq for MetaTagDecode

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fn eq(&self, other: &MetaTagDecode) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 (const: unstable) · Source§

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

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

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impl StructuralPartialEq for MetaTagDecode

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🔬This is a nightly-only experimental API. (clone_to_uninit)
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