Struct GroupMetadata 

pub struct GroupMetadata {
    pub name: Option<String>,
    pub created_at_ms: u64,
    pub last_activity_ms: u64,
    pub custom: HashMap<String, String>,
    pub created_by: Option<String>,
    pub roles: HashMap<String, GroupRole>,
}

Metadata about an MLS group (stored separately from MLS state).

Fields

name: Option<String>

Human-readable group name.

created_at_ms: u64

Timestamp when the group was created (milliseconds since epoch).

last_activity_ms: u64

Timestamp of the last activity (milliseconds since epoch).

custom: HashMap<String, String>

Custom application-specific metadata.

created_by: Option<String>

User ID of the group creator.

roles: HashMap<String, GroupRole>

Per-member role assignments. Deserialization falls back to migrating legacy "role:*" keys from custom.

Implementations

impl GroupMetadata

pub const LEGACY_ROLE_KEY_PREFIX: &'static str = "role:"

Prefix previously used for role entries in the custom map (legacy).

pub fn new(name: Option<String>) -> Self

Creates new group metadata with the given name and creator.

pub fn new_with_creator(name: Option<String>, creator_id: &str) -> Self

Creates new group metadata with a creator.

pub fn migrate_legacy_roles(&mut self)

Migrates any legacy "role:*" keys from the custom map into the dedicated roles field. Call after deserialization for backwards-compatibility with older group metadata.

pub fn touch(&mut self)

Updates the last activity timestamp to now.

pub fn get_role(&self, user_id: &str) -> GroupRole

Gets the role for a user, defaulting to GroupRole::Member if not set.

pub fn set_role(&mut self, user_id: &str, role: GroupRole)

Sets the role for a user.

pub fn remove_role(&mut self, user_id: &str)

Removes role metadata for a user (on removal from group).

pub fn has_any_admin(&self) -> bool

Returns true if any admin role is stored in this metadata.

pub fn get_all_roles(&self) -> HashMap<String, GroupRole>

Returns all user_id -> role mappings.

Trait Implementations

impl Clone for GroupMetadata

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GroupMetadata

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for GroupMetadata

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for GroupMetadata

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

where __S: Serializer,

Serialize this value into the given Serde serializer.