Enum A2aError &nbsp; Copy item path

TaskNotFound

Task not found in the task store. JSON-RPC: -32001, HTTP: 404

Fields

§task_id: String

TaskNotCancelable

Task cannot be canceled because it is in a terminal state. JSON-RPC: -32002, HTTP: 409

Fields

§task_id: String

§current_state: String

PushNotificationNotSupported

Agent does not support push notifications. JSON-RPC: -32003, HTTP: 400

UnsupportedOperation

A valid method was called but the agent does not support it. JSON-RPC: -32004, HTTP: 400

Fields

§method: String

ContentTypeNotSupported

A media type in the request is not supported. JSON-RPC: -32005, HTTP: 415

Fields

§media_type: String

InvalidAgentResponse

The agent returned a non-conformant response. JSON-RPC: -32006, HTTP: 502

Fields

§message: String

ExtendedAgentCardNotConfigured

Extended agent card is declared but not configured. JSON-RPC: -32007, HTTP: 400

ExtensionSupportRequired

A required extension is not declared by the client. JSON-RPC: -32008, HTTP: 400

Fields

§uri: String

VersionNotSupported

Requested protocol version is not supported. JSON-RPC: -32009, HTTP: 400

Fields

§requested: String

§supported: Vec<String>

InvalidParams

Request parameters failed validation. JSON-RPC: -32602, HTTP: 400

Fields

§message: String

Internal

Unexpected server-side failure. JSON-RPC: -32603, HTTP: 500

Fields

§message: String

MethodNotFound

Requested JSON-RPC method is not recognized. JSON-RPC: -32601, HTTP: 404

Fields

§method: String

InvalidStateTransition

Attempted an invalid task state transition. JSON-RPC: -32603, HTTP: 409

Fields

§from: String

§to: String

PushDeliveryFailed

Push notification webhook delivery failed after retries. JSON-RPC: -32603, HTTP: 500

Fields

§message: String

Implementations§

impl A2aError

pub fn json_rpc_code(&self) -> i32

Map to JSON-RPC error code per A2A v1.0.0 spec §5.4.

pub fn http_status(&self) -> u16

Map to HTTP status code per A2A v1.0.0 spec §5.4.

pub fn to_error_info(&self) -> Value

Produce google.rpc.ErrorInfo data per spec §9.5.

Returns a JSON array containing a single google.rpc.ErrorInfo object with @type, reason (UPPER_SNAKE_CASE, no “Error” suffix), domain, and variant-specific metadata.

pub fn to_jsonrpc_error(&self) -> Value

Produce a JSON-RPC error object: { "code": ..., "message": ..., "data": <error_info> }.

pub fn to_http_error_response(&self) -> Value

Produce an AIP-193 HTTP error response.

{
  "error": {
    "code": 404,
    "status": "NOT_FOUND",
    "message": "Task not found: task_abc123",
    "details": [<error_info>]
  }
}

Trait Implementations§

impl Debug for A2aError

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more

impl Display for A2aError

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more

impl Error for A2aError

1.30.0 · Source§

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any. Read more

1.0.0 · Source§

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports. Read more

Auto Trait Implementations§

impl UnwindSafe for A2aError

Blanket Implementations§

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> AsErrorSource for T
where T: Error + 'static,

fn as_error_source(&self) -> &(dyn Error + 'static)

For maximum effectiveness, this needs to be called as a method to benefit from Rust’s automatic dereferencing of method receivers.

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Immutably borrows from an owned value. Read more

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Converts self into T using Into<T>. Read more

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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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where Self: Display,

Causes self to use its Display implementation when Debug-formatted.

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where Self: LowerExp,

Causes self to use its LowerExp implementation when Debug-formatted.

fn fmt_lower_hex(self) -> FmtLowerHex<Self>
where Self: LowerHex,

Causes self to use its LowerHex implementation when Debug-formatted.

fn fmt_octal(self) -> FmtOctal<Self>
where Self: Octal,

Causes self to use its Octal implementation when Debug-formatted.

fn fmt_pointer(self) -> FmtPointer<Self>
where Self: Pointer,

Causes self to use its Pointer implementation when Debug-formatted.

fn fmt_upper_exp(self) -> FmtUpperExp<Self>
where Self: UpperExp,

Causes self to use its UpperExp implementation when Debug-formatted.

fn fmt_upper_hex(self) -> FmtUpperHex<Self>
where Self: UpperHex,

Causes self to use its UpperHex implementation when Debug-formatted.

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.

impl<T> Instrument for T

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Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

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Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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where U: From<T>,

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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 is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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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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Pipes by value. This is generally the method you want to use. Read more

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Mutably borrows self and passes that borrow into the pipe function. Read more

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Borrows self, then passes self.borrow() into the pipe function. Read more

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where Self: BorrowMut, B: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.borrow_mut() into the pipe function. Read more

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where Self: AsRef, U: 'a + ?Sized, R: 'a,

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where T: Sized + 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: Sized + 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

Should always be Self

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Calls .tap() only in debug builds, and is erased in release builds.

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Fallible version of ToCompactString::to_compact_string() Read more

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where S: Into<Dispatch>,

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