Fingerprint

Enum Fingerprint 

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pub enum Fingerprint {
    Rabin(u64),
    Id(u32),
    MD5([u8; 16]),
    SHA256([u8; 32]),
}
Expand description

A schema fingerprint in one of the supported formats.

This is used as the key inside SchemaStore HashMap. Each SchemaStore instance always stores only one variant, matching its configured FingerprintAlgorithm, but the enum makes the API uniform.

https://avro.apache.org/docs/1.11.1/specification/#schema-fingerprints https://docs.confluent.io/platform/current/schema-registry/fundamentals/serdes-develop/index.html#wire-format

Variants§

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Rabin(u64)

A 64-bit Rabin fingerprint.

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Id(u32)

A 32-bit Schema Registry ID.

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MD5([u8; 16])

A 128-bit MD5 fingerprint.

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SHA256([u8; 32])

A 256-bit SHA-256 fingerprint.

Implementations§

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impl Fingerprint

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pub fn load_fingerprint_id(id: u32) -> Self

Loads the 32-bit Schema Registry fingerprint (Confluent Schema Registry ID).

The provided id is in big-endian wire order; this converts it to host order and returns Fingerprint::Id.

§Returns

A Fingerprint::Id variant containing the 32-bit fingerprint.

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pub fn make_prefix(&self) -> Prefix

Constructs a serialized prefix represented as a Vec<u8> based on the variant of the enum.

This method serializes data in different formats depending on the variant of self:

  • Id(id): Uses the Confluent wire format, which includes a predefined magic header (CONFLUENT_MAGIC) followed by the big-endian byte representation of the id.
  • Rabin(val): Uses the Avro single-object specification format. This includes a different magic header (SINGLE_OBJECT_MAGIC) followed by the little-endian byte representation of the val.
  • MD5(bytes) (optional, md5 feature enabled): A non-standard extension that adds the SINGLE_OBJECT_MAGIC header followed by the provided bytes.
  • SHA256(bytes) (optional, sha256 feature enabled): Similar to the MD5 variant, this is a non-standard extension that attaches the SINGLE_OBJECT_MAGIC header followed by the given bytes.
§Returns

A Prefix containing the serialized prefix data.

§Features
  • You can optionally enable the md5 feature to include the MD5 variant.
  • You can optionally enable the sha256 feature to include the SHA256 variant.

Trait Implementations§

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impl Clone for Fingerprint

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fn clone(&self) -> Fingerprint

Returns a duplicate of the value. Read more
1.0.0 · Source§

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

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

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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 From<&Fingerprint> for FingerprintAlgorithm

Allow easy extraction of the algorithm used to create a fingerprint.

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fn from(fp: &Fingerprint) -> Self

Converts to this type from the input type.
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impl From<&Fingerprint> for FingerprintStrategy

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fn from(f: &Fingerprint) -> Self

Converts to this type from the input type.
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impl From<&FingerprintStrategy> for Fingerprint

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fn from(s: &FingerprintStrategy) -> Self

Converts to this type from the input type.
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impl From<Fingerprint> for FingerprintStrategy

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fn from(f: Fingerprint) -> Self

Converts to this type from the input type.
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impl From<FingerprintAlgorithm> for Fingerprint

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fn from(s: FingerprintAlgorithm) -> Self

Converts to this type from the input type.
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impl From<FingerprintStrategy> for Fingerprint

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fn from(s: FingerprintStrategy) -> Self

Converts to this type from the input type.
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impl Hash for Fingerprint

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
1.3.0 · Source§

fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq for Fingerprint

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

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

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impl Eq for Fingerprint

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impl StructuralPartialEq for Fingerprint

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<Q, K> Equivalent<K> for Q
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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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fn from(t: T) -> T

Returns the argument unchanged.

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

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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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type Output = T

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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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type Error = Infallible

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Performs the conversion.
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