Enum ExtensionRegistryError 

pub enum ExtensionRegistryError {
    InvalidIdentifier(String),
    ReservedNamespace(String),
    SettingsNotObject,
    SettingsCodecRejected,
    OfficialMcpAppsServerSettingsNotEmpty,
    OfficialMcpAppsDescriptorMismatch,
    SettingsTooManyEntries,
    SettingsKeyTooLong,
    SettingsTooLarge,
    SettingsTooDeep,
    MissingOwner(&'static str),
    DuplicateExtensionId(String),
    UnregisteredExtensionId(String),
    OwnershipCollision {
        field: &'static str,
        value: String,
    },
    MissingHttpEraDisposition(String),
    LegacyFallbackContradiction(String),
    CoreMethodCollision(String),
    CoreNotificationCollision(String),
    CoreResultDiscriminatorCollision(String),
    MemberNameTooLong {
        field: &'static str,
        value: String,
    },
    LocalOwnershipCollision {
        field: &'static str,
        value: String,
    },
    Frozen,
    DigestTooLarge,
}

Stable registry-validation diagnostics.

Variants

InvalidIdentifier(String)

The identifier did not satisfy the mandatory prefix/name grammar.

ReservedNamespace(String)

The identifier used a reserved official second DNS label.

SettingsNotObject

Generic settings were not a JSON object.

SettingsCodecRejected

Typed settings decoding rejected the otherwise preserved object.

OfficialMcpAppsServerSettingsNotEmpty

Official MCP Apps server settings must be the exact empty marker.

OfficialMcpAppsDescriptorMismatch

The official MCP Apps descriptor differed from its frozen method-free shape.

SettingsTooManyEntries

Generic settings exceeded the fixed number of retained members.

SettingsKeyTooLong

A generic settings key exceeded its fixed byte limit.

SettingsTooLarge

A generic settings value exceeded its fixed encoded-byte limit.

SettingsTooDeep

A generic settings value exceeded its fixed nesting limit.

MissingOwner(&'static str)

A descriptor omitted a required stable owner value.

DuplicateExtensionId(String)

A descriptor ID was registered twice.

UnregisteredExtensionId(String)

A method was added to an extension that is not registered.

OwnershipCollision

A named field already belongs to a different descriptor.

Fields

field: &'static str

value: String

MissingHttpEraDisposition(String)

A client-to-server method omitted its frozen era disposition.

LegacyFallbackContradiction(String)

Legacy fallback contradicts the frozen HTTP-era disposition.

CoreMethodCollision(String)

A descriptor attempted to claim a legacy/shared core method.

CoreNotificationCollision(String)

A descriptor attempted to claim a legacy/shared core notification.

CoreResultDiscriminatorCollision(String)

A descriptor attempted to claim a final-core result discriminator.

MemberNameTooLong

A descriptor member exceeded its bounded wire-name limit.

Fields

field: &'static str

value: String

LocalOwnershipCollision

A descriptor claimed the same local wire name in incompatible roles.

Fields

field: &'static str

value: String

Frozen

Registration occurred after the immutable registry was frozen.

DigestTooLarge

The canonical digest subject exceeded its bounded limit.

Trait Implementations

impl Clone for ExtensionRegistryError

fn clone(&self) -> ExtensionRegistryError

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ExtensionRegistryError

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

Formats the value using the given formatter.

impl Display for ExtensionRegistryError

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

Formats the value using the given formatter.

impl Eq for ExtensionRegistryError

impl Error for ExtensionRegistryError

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

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

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.

impl PartialEq for ExtensionRegistryError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ExtensionRegistryError