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FailureClass

Enum FailureClass 

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pub enum FailureClass {
Show 26 variants AuthMissing, AuthRejected, AccountNotFound, ModelUnavailable, UnsupportedParameter, ContextLimitExceeded, ConnectTimeout, ReadTimeout, StreamIdleTimeout, ConnectionReset, TlsFailure, RateLimited, ProviderServerError, CloudflareEdgeError, EmptyCompletion, TruncatedCompletion, InvalidJson, InvalidChatCompletionShape, InvalidSseEvent, MissingFinishReason, NoToolCall, InvalidToolName, InvalidToolArguments, DuplicateToolCall, ToolLoopDidNotConverge, Unknown,
}
Expand description

Typed delivery-failure taxonomy (feedback 02).

Every failure recorded for a Cloudflare Workers AI model must map to exactly one class. Unknown is the last resort for classes not yet in the taxonomy - never guess a specific class without evidence.

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AuthMissing

Credentials could not be resolved (missing env var or empty token).

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AuthRejected

Cloudflare rejected the presented credentials (401).

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AccountNotFound

The configured account could not be found or is out of scope.

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ModelUnavailable

The requested model is not available on this account or route.

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UnsupportedParameter

A request parameter is not supported by the model or endpoint.

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ContextLimitExceeded

The context window was exceeded by the request.

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ConnectTimeout

Connection establishment timed out.

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ReadTimeout

The upstream did not respond within the read timeout.

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StreamIdleTimeout

The stream produced no event within the idle timeout.

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ConnectionReset

The connection was reset mid-request or mid-stream.

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TlsFailure

TLS handshake or certificate failure.

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RateLimited

Cloudflare rate-limited the request (429).

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ProviderServerError

The provider returned a 5xx error.

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CloudflareEdgeError

Cloudflare edge error envelope (cf-ray present, success: false).

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EmptyCompletion

The completion was delivered with empty content.

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TruncatedCompletion

The completion was cut off before a terminal state.

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InvalidJson

The response body was not valid JSON.

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InvalidChatCompletionShape

The JSON did not match the Chat Completions shape.

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InvalidSseEvent

An SSE event was malformed.

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MissingFinishReason

A terminal chunk was missing its finish reason.

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NoToolCall

The model answered without issuing the required tool call.

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InvalidToolName

The tool call named an unknown or disallowed tool.

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InvalidToolArguments

The tool-call arguments were not valid JSON for the schema.

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DuplicateToolCall

The same tool call was issued more than once.

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ToolLoopDidNotConverge

The multi-turn tool loop did not converge to a final answer.

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Unknown

Failure class not yet classified - never guess a specific class.

Trait Implementations§

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impl Clone for FailureClass

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fn clone(&self) -> FailureClass

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 FailureClass

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impl Debug for FailureClass

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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<'de> Deserialize<'de> for FailureClass

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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 Eq for FailureClass

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impl PartialEq for FailureClass

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

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

Inequality operator !=. Read more
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impl Serialize for FailureClass

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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 StructuralPartialEq for FailureClass

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> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,

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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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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
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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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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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 = !

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

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.