Struct GroupId 

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

The sealed-envelope types, re-exported so that every path into them keeps working and there is still exactly one definition of each.

They live in offline-protocol-sealed because a leaf node encodes and decodes the same envelope this crate does, and cannot link this crate: this one is built on OpenMLS, which needs std. See ADR 0022. Unique identifier for an MLS group.

Group ids flow from the wire into MlsStorage as raw key_id storage keys, so they are validated at construction: one or more non-empty colon-separated segments (: is the namespace separator used by session:<a>:<b> and group:<uuid> ids), each segment subject to the same storage-key policy as UserId/AppId (no path-traversal components, control characters, /, or \), with a total length cap of GroupId::MAX_LEN.

Implementations

impl GroupId

pub const MAX_LEN: usize = MAX_STRING_FIELD_LEN

Maximum accepted group id length in bytes.

This is the compact wire format’s string-field cap, not a copy of it: a group id that could not survive a round trip through the envelope must not be constructible in the first place.

pub fn new(id: impl Into<String>) -> Result<GroupId, SealedError>

Creates a new group ID, rejecting storage-hostile values.

pub fn as_str(&self) -> &str

Returns the group ID as a string slice.

pub fn for_session(user_a: &str, user_b: &str) -> Result<GroupId, SealedError>

Builds the deterministic group ID for a 1:1 session, rejecting storage-hostile user ids (the id becomes a raw storage key).

Both peers must land on the same string, so the two ids are put in a canonical order. When both are addresses that order is Address order, the underlying hash bytes, because the bech32 charset is not ASCII-monotonic (value 4 renders as y 0x79, value 5 as 9 0x39), so sorting the rendered strings would disagree with every other address comparison in the protocol. Ids that are not both addresses fall back to string order, which is all a nickname id has.

Either way the result is symmetric in its arguments, which is the property peers actually depend on.

Trait Implementations

impl Clone for GroupId

fn clone(&self) -> GroupId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GroupId

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for GroupId

fn deserialize<D>( deserializer: D, ) -> Result<GroupId, <D as Deserializer<'de>>::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for GroupId

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

Formats the value using the given formatter.

impl Eq for GroupId

impl Hash for GroupId

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 PartialEq for GroupId

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for GroupId

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 StructuralPartialEq for GroupId