Struct UserId 

pub struct UserId(/* private fields */);

Core traits and types.

Always available regardless of feature flags. Includes:

• Agent - The fundamental trait for all agents
• Tool / Toolset - For extending agents with capabilities
• Session / State - For managing conversation context
• Event - For streaming agent responses
• AdkError / Result - Unified error handling A typed wrapper around a logical user identifier.

Examples

use adk_core::identity::UserId;

let uid: UserId = "tenant:alice@example.com".parse().unwrap();
assert_eq!(uid.as_ref(), "tenant:alice@example.com");

Implementations

impl UserId

pub fn as_str(&self) -> &str

Returns the inner string slice.

pub fn new(value: impl Into<String>) -> Result<UserId, IdentityError>

Creates a typed identifier with validation.

Prefer this constructor at trust boundaries where the input may come from users, HTTP payloads, or external systems.

pub fn new_unchecked(value: impl Into<String>) -> UserId

Creates a typed identifier from a trusted string without validation.

Use this only for values that originate from internal runtime paths (e.g. session service, runner) where the string is already known to be valid. Prefer TryFrom or FromStr at trust boundaries.

Trait Implementations

impl AsRef<str> for UserId

fn as_ref(&self) -> &str

Converts this type into a shared reference of the (usually inferred) input type.

impl Borrow<str> for UserId

fn borrow(&self) -> &str

Immutably borrows from an owned value.

impl Clone for UserId

fn clone(&self) -> UserId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UserId

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for UserId

fn deserialize<__D>( __deserializer: __D, ) -> Result<UserId, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for UserId

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

Formats the value using the given formatter.

impl FromStr for UserId

type Err = IdentityError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<UserId, <UserId as FromStr>::Err>

Parses a string s to return a value of this type.

impl Hash for UserId

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for UserId

fn cmp(&self, other: &UserId) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for UserId

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for UserId

fn partial_cmp(&self, other: &UserId) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for UserId

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl TryFrom<&str> for UserId

type Error = IdentityError

The type returned in the event of a conversion error.

fn try_from(s: &str) -> Result<UserId, <UserId as TryFrom<&str>>::Error>

Performs the conversion.

impl TryFrom<String> for UserId

type Error = IdentityError

The type returned in the event of a conversion error.

fn try_from(s: String) -> Result<UserId, <UserId as TryFrom<String>>::Error>

Performs the conversion.

impl Eq for UserId

impl StructuralPartialEq for UserId