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Predicate

boundless_market::contracts

Enum Predicate 

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#[non_exhaustive]
pub enum Predicate {
    DigestMatch(Digest, Digest),
    PrefixMatch(Digest, Bytes),
    ClaimDigestMatch(Digest),
}
Expand description

A Predicate is a function over the claim that determines whether it meets the clients requirements.

Variants (Non-exhaustive)§

This enum is marked as non-exhaustive
Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.
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DigestMatch(Digest, Digest)

The image id and digest must match the provided image id and journal digest.

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PrefixMatch(Digest, Bytes)

The image id and journal prefix must match the provided image id and journal.

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ClaimDigestMatch(Digest)

The claim digest must match the provided claim digest.

Implementations§

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impl Predicate

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pub fn digest_match( image_id: impl Into<Digest>, journal_digest: impl Into<Digest>, ) -> Self

Returns a predicate to match the journal digest. This ensures that the request’s fulfillment will contain a journal with the same digest.

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pub fn prefix_match( image_id: impl Into<Digest>, journal_prefix: impl Into<Bytes>, ) -> Self

Returns a predicate to match the journal prefix. This ensures that the request’s fulfillment will contain a journal with the same prefix.

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pub fn claim_digest_match(claim_digest: impl Into<Digest>) -> Self

Returns a predicate to match the claim digest. This ensures that the request’s fulfillment will contain a claim with the same digest.

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pub fn image_id(&self) -> Option<Digest>

Returns the image_id if it exists.

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pub fn eval(&self, fulfillment_data: &FulfillmentData) -> Option<Digest>

Evaluates the predicate against the fulfillment data, returning the claim digest if the evaluation succeeds or None if it fails.

Trait Implementations§

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impl Clone for Predicate

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fn clone(&self) -> Predicate

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 Predicate

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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<Predicate> for RequestPredicate

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fn from(value: Predicate) -> Self

Converts to this type from the input type.
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impl TryFrom<Predicate> for Predicate

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type Error = PredicateError

The type returned in the event of a conversion error.
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fn try_from(value: RequestPredicate) -> Result<Self, Self::Error>

Performs the conversion.

Auto Trait Implementations§

Blanket Implementations§

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impl<L, I> Adapt<L> for I
where L: Layer<I>,

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type Output = <L as Layer<I>>::Output

Available on non-target_os=zkvm only.
The output type after processing by the layer.
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type Error = <L as Layer<I>>::Error

Available on non-target_os=zkvm only.
Error type that may be returned during processing.
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async fn process_with( self, layer: &L, ) -> Result<<I as Adapt<L>>::Output, <I as Adapt<L>>::Error>

Available on non-target_os=zkvm only.
Processes this value with the provided layer.
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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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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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fn conv<T>(self) -> T
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fn __clone_box(&self, _: Private) -> *mut ()

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impl<T> FmtForward for T

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fn fmt_binary(self) -> FmtBinary<Self>
where Self: Binary,

Causes self to use its Binary implementation when Debug-formatted.
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fn fmt_display(self) -> FmtDisplay<Self>
where Self: Display,

Causes self to use its Display implementation when Debug-formatted.
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fn fmt_lower_exp(self) -> FmtLowerExp<Self>
where Self: LowerExp,

Causes self to use its LowerExp implementation when Debug-formatted.
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fn fmt_lower_hex(self) -> FmtLowerHex<Self>
where Self: LowerHex,

Causes self to use its LowerHex implementation when Debug-formatted.
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fn fmt_octal(self) -> FmtOctal<Self>
where Self: Octal,

Causes self to use its Octal implementation when Debug-formatted.
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where Self: Pointer,

Causes self to use its Pointer implementation when Debug-formatted.
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where Self: UpperExp,

Causes self to use its UpperExp implementation when Debug-formatted.
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fn fmt_upper_hex(self) -> FmtUpperHex<Self>
where Self: UpperHex,

Causes self to use its UpperHex implementation when Debug-formatted.
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fn fmt_list(self) -> FmtList<Self>
where &'a Self: for<'a> IntoIterator,

Formats each item in a sequence. Read more
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fn from(t: T) -> T

Returns the argument unchanged.

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Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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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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Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_request(self) -> Request<T>

Wrap the input message T in a tonic::Request
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impl<Unshared, Shared> IntoShared<Shared> for Unshared
where Shared: FromUnshared<Unshared>,

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fn into_shared(self) -> Shared

Creates a shared type from an unshared type.
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impl<L> LayerExt<L> for L

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fn named_layer<S>(&self, service: S) -> Layered<<L as Layer<S>>::Service, S>
where L: Layer<S>,

Applies the layer to a service and wraps it in Layered.
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impl<T> Pipe for T
where T: ?Sized,

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fn pipe<R>(self, func: impl FnOnce(Self) -> R) -> R
where Self: Sized,

Pipes by value. This is generally the method you want to use. Read more
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where R: 'a,

Borrows self and passes that borrow into the pipe function. Read more
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where Self: AsRef<U>, U: 'a + ?Sized, R: 'a,

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where Self: AsMut<U>, U: 'a + ?Sized, R: 'a,

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where Self: Deref<Target = T>, T: 'a + ?Sized, R: 'a,

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const ALIGN: usize

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type Init = T

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where T: Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow only if self and other return Action::Follow. Read more
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where T: Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow if either self or other returns Action::Follow. Read more
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type Output = T

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fn tap(self, func: impl FnOnce(&Self)) -> Self

Immutable access to a value. Read more
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Mutable access to a value. Read more
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where Self: Borrow<B>, B: ?Sized,

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Performs the conversion.
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