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GroupSetGate

xmtp_mls::subscriptions::incoming::stream_api

Struct GroupSetGate 

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pub struct GroupSetGate(/* private fields */);
Expand description

The group-set generation (QueryGroup::group_set_generation) of an operation’s last successful discovery read, so a rediscovery is skipped while the stored group set is unchanged.

Read the generation before the discovery query and record it only after the query succeeds. A write that commits between the two reads then changes the generation the next pass sees, so the next pass reads again. Reading the generation after the query could cache an old set under a new generation.

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impl GroupSetGate

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pub fn changed(&self, current: i64) -> bool

Whether current differs from the recorded generation, or none is recorded, so the operation must read again.

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pub fn record(&mut self, current: i64)

Record the generation read before a discovery read that succeeded.

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impl Debug for GroupSetGate

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

Formats the value using the given formatter. Read more
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impl Default for GroupSetGate

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fn default() -> GroupSetGate

Returns the “default value” for a type. Read more

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