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Manifest

Struct Manifest 

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pub struct Manifest {
    pub entries: BTreeMap<String, ContentHash>,
}
Expand description

A per-view manifest body: path -> the content hash of the populating slice.

Backed by a BTreeMap so serialization has deterministic key order — a manifest with the same entries always hashes identically, which keeps its record revision stable under content-addressed dedup.

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§entries: BTreeMap<String, ContentHash>

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impl Manifest

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pub fn new() -> Self

An empty manifest.

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pub fn key(repo: impl Into<String>, view_id: impl Into<String>) -> RecordKey

The stable RecordKey addressing the manifest for (repo, view_id). A view has exactly one manifest, so this is a pure function of the pair.

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pub fn collection() -> &'static str

The collection segment every manifest is addressed under. A KeyPrefix with this collection and no namespace lists every view’s manifest across all repos — the set GC must union to mark live slices.

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pub fn insert(&mut self, path: impl Into<String>, hash: ContentHash)

Record that path is populated by the slice with content hash hash.

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pub fn get(&self, path: &str) -> Option<&ContentHash>

The content hash of the slice populating path, if the view has one.

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pub fn to_body(&self) -> Body

Serialize into an inline record Body (deterministic key order).

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pub fn from_body(body: &Body) -> Result<Self>

Reconstruct a manifest from a record Body. Errors if the body bytes are not a valid serialized manifest.

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pub fn reconcile( &self, desired: &BTreeMap<String, ContentHash>, ) -> Reconciliation

Reconcile this manifest against the desired path -> content_hash set of a working tree, returning the change sets and the reconciled manifest.

The A/M/D classification is a pure set difference, so it is robust to missed events — a full reconcile always converges the manifest onto the tree regardless of how the desired set was sourced (a git diff stream is only an optimization for building it). Unchanged paths (present in both with an equal hash) appear in none of the change sets. Each set is sorted for deterministic output, and the reconciled manifest equals desired.

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impl Clone for Manifest

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fn clone(&self) -> Manifest

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

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

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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 Default for Manifest

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fn default() -> Manifest

Returns the “default value” for a type. Read more
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impl<'de> Deserialize<'de> for Manifest

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl PartialEq for Manifest

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fn eq(&self, other: &Manifest) -> 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 Serialize for Manifest

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

Serialize this value into the given Serde serializer. Read more
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impl Eq for Manifest

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impl StructuralPartialEq for Manifest

Auto Trait Implementations§

Blanket Implementations§

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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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impl<T> Borrow<T> for T
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
where T: ?Sized,

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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<T> From<T> for T

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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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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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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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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,