Struct MessageType 

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

A validated message type identifier.

Message types use dot-separated namespacing convention. Examples: “timer.tick”, “user.created”, “system.shutdown”

Validation Rules

• Cannot be empty
• Contain only lowercase letters, digits, dots, hyphens, underscores
• Cannot start or end with a dot
• Cannot have consecutive dots

Implementations

impl MessageType

pub fn new(value: impl Into<String>) -> Result<Self, InvalidMessageType>

Creates a new message type after validation.

Errors

Returns an error if the message type is invalid.

pub fn as_str(&self) -> &str

Returns the message type as a string slice.

pub fn parts(&self) -> Vec<&str>

Returns the namespace parts.

For “user.created”, returns ["user", "created"].

pub fn category(&self) -> Option<&str>

Returns the first part of the message type (the category).

For “user.created”, returns Some("user").

pub fn matches_pattern(&self, pattern: &str) -> bool

Checks if this message type matches a pattern with wildcards.

Supports * at the end to match any suffix. Examples:

• “timer.tick” matches “timer.tick” (exact)
• “timer.tick” matches “timer.*” (wildcard)
• “system.started.timer” matches “system.started.*” (wildcard)

Trait Implementations

impl AsRef<str> for MessageType

fn as_ref(&self) -> &str

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

impl Clone for MessageType

fn clone(&self) -> MessageType

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MessageType

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for MessageType

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for MessageType

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

Formats the value using the given formatter.

impl FromStr for MessageType

type Err = InvalidMessageType

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

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

impl Hash for MessageType

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

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 PartialEq for MessageType

fn eq(&self, other: &MessageType) -> 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 Serialize for MessageType

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for MessageType

impl StructuralPartialEq for MessageType