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BasicKind

Struct BasicKind 

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pub struct BasicKind;
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The no-fetch crawler kind whose execution hands requests directly to handlers.

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impl Clone for BasicKind

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fn clone(&self) -> BasicKind

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 Copy for BasicKind

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impl CrawlerKind for BasicKind

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type Context = BasicContext

The context passed to user handlers and lifecycle hooks. Read more
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fn execute<'a>( &'a self, env: RequestEnv<'a>, ) -> BoxFuture<'a, Result<BasicContext, CrawlError>>

Executes one request attempt and constructs its handler context.
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fn cleanup( &self, _outcome: RequestOutcome<BasicContext>, ) -> BoxFuture<'_, Result<(), CrawlError>>

Runs after every attempt concludes, regardless of its outcome.
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fn start<'a>( &'a self, env: &'a CrawlerEnv, ) -> BoxFuture<'a, Result<(), CrawlError>>

Runs once before the crawler fetches any request.
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fn before_request<'a>( &'a self, prep: &'a mut RequestPrep, ) -> BoxFuture<'a, Result<(), CrawlError>>

Mutates a request before an attempt executes.
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fn observe(&self, ctx: &Self::Context) -> AttemptObservation

Called once after execute() succeeds; feeds statistics, HandledRequest, and RetryStrategy metadata.
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fn after_success<'a>( &'a self, ctx: &'a mut Self::Context, ) -> BoxFuture<'a, Result<(), CrawlError>>

Runs after the user handler succeeds.
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fn stop<'a>( &'a self, env: &'a CrawlerEnv, ) -> BoxFuture<'a, Result<(), CrawlError>>

Runs once when crawler shutdown begins.
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impl Debug for BasicKind

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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 BasicKind

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fn default() -> BasicKind

Returns the “default value” for a type. Read more

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> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more