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EphemeralDbConnection

xmtp_db::encrypted_store::database::native

Struct EphemeralDbConnection 

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pub struct EphemeralDbConnection { /* private fields */ }

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Trait Implementations§

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impl ConnectionExt for EphemeralDbConnection

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fn raw_query<T, F>(&self, fun: F) -> Result<T, ConnectionError>
where F: FnOnce(&mut SqliteConnection) -> Result<T, Error>, Self: Sized,

Run a scoped query against the underlying SQLite connection.
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fn disconnect(&self) -> Result<(), ConnectionError>

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fn reconnect(&self) -> Result<(), ConnectionError>

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impl Debug for EphemeralDbConnection

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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<C> Fetch<IdentityCache> for C
where C: ConnectionExt,

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type Key = ()

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fn fetch( &self, _key: &<C as Fetch<IdentityCache>>::Key, ) -> Result<Option<IdentityCache>, StorageError>

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impl<C> Fetch<PendingRemove> for C
where C: ConnectionExt,

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type Key = ()

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fn fetch( &self, _key: &<C as Fetch<PendingRemove>>::Key, ) -> Result<Option<PendingRemove>, StorageError>

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impl<C> Fetch<StoredAssociationState> for C
where C: ConnectionExt,

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type Key = (String, i64)

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fn fetch( &self, key: &<C as Fetch<StoredAssociationState>>::Key, ) -> Result<Option<StoredAssociationState>, StorageError>

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impl<C> Fetch<StoredGroup> for C
where C: ConnectionExt,

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type Key = GroupId

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fn fetch( &self, key: &<C as Fetch<StoredGroup>>::Key, ) -> Result<Option<StoredGroup>, StorageError>

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impl<C> Fetch<StoredGroupIntent> for C
where C: ConnectionExt,

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type Key = i32

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fn fetch( &self, key: &<C as Fetch<StoredGroupIntent>>::Key, ) -> Result<Option<StoredGroupIntent>, StorageError>

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impl<C> Fetch<StoredGroupMessage> for C
where C: ConnectionExt,

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type Key = Vec<u8>

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fn fetch( &self, key: &<C as Fetch<StoredGroupMessage>>::Key, ) -> Result<Option<StoredGroupMessage>, StorageError>

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impl<C> Fetch<StoredIdentity> for C
where C: ConnectionExt,

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type Key = ()

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fn fetch( &self, _key: &<C as Fetch<StoredIdentity>>::Key, ) -> Result<Option<StoredIdentity>, StorageError>

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impl<C> Fetch<StoredKeyStoreEntry> for C
where C: ConnectionExt,

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type Key = Vec<u8>

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fn fetch( &self, key: &<C as Fetch<StoredKeyStoreEntry>>::Key, ) -> Result<Option<StoredKeyStoreEntry>, StorageError>

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impl<C> Fetch<UploadedTopic> for C
where C: ConnectionExt,

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type Key = Vec<u8>

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fn fetch( &self, key: &<C as Fetch<UploadedTopic>>::Key, ) -> Result<Option<UploadedTopic>, StorageError>

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const ALIGN: usize

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type Init = T

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impl<C> QueryDelivery for C
where C: ConnectionExt,

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fn stream_database_id(&self) -> Result<[u8; 16], StorageError>

Read the database identity used to reject foreign or pre-restore cursors.
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fn rotate_stream_database_id(&self) -> Result<[u8; 16], StorageError>

Rotate only under exclusive restore lifecycle access. Existing consumer tokens are fenced.
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fn assign_delivery_sequence( &self, message_id: &[u8], ) -> Result<Option<u64>, StorageError>

Allocate within the transaction that makes a message deliverable. A duplicate keeps its number. An optimistic unpublished row has no number.
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fn current_delivery_cursor(&self) -> Result<DeliveryCursor, StorageError>

Read the persistent allocator, not the maximum remaining message row.
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fn acquire_delivery_owner( &self, now_ns: i64, until_ns: i64, ) -> Result<DeliveryOwner, StorageError>

Acquire the sole default-consumer lease at a supplied time; fail if one is active.
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fn acquire_delivery_owner_with_clock( &self, lease_ns: i64, clock: impl FnOnce() -> i64, ) -> Result<DeliveryOwner, StorageError>

Read the clock after the writer is acquired, not before a possible lock wait.
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fn renew_delivery_owner( &self, owner: DeliveryOwner, now_ns: i64, until_ns: i64, ) -> Result<(), StorageError>

An expired token cannot be renewed. The caller must acquire a new token.
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fn renew_delivery_owner_with_clock( &self, owner: DeliveryOwner, lease_ns: i64, clock: impl FnOnce() -> i64, ) -> Result<(), StorageError>

Extend only the current, unexpired token using time read after the writer lock.
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fn check_delivery_owner( &self, owner: DeliveryOwner, now_ns: i64, ) -> Result<(), StorageError>

Reject expired or replaced tokens before handing a message to the app.
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fn check_delivery_owner_with_clock( &self, owner: DeliveryOwner, clock: impl FnOnce() -> i64, ) -> Result<(), StorageError>

Check ownership using fresh time after the database connection is available.
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fn release_delivery_owner( &self, owner: DeliveryOwner, ) -> Result<(), StorageError>

Release this token only; a stale consumer cannot release its replacement.
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fn delivery_message_is_retained( &self, message_id: &[u8], cursor: DeliveryCursor, now_ns: i64, ) -> Result<bool, StorageError>

A buffered candidate can expire or be deleted while its previous item is held.
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fn default_delivery_messages( &self, owner: DeliveryOwner, scope: &DeliveryScope, now_ns: i64, limit: u32, ) -> Result<Vec<DeliveryMessage>, StorageError>

Read retained candidates above each group’s default position. The caller applies consent/type filters and acknowledges scanned rows by the same owner.
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fn default_delivery_messages_bounded( &self, owner: DeliveryOwner, scope: &DeliveryScope, now_ns: i64, limit: u32, max_bytes: u64, ) -> Result<Vec<DeliveryMessage>, StorageError>

Bound rows and bytes before loading message bodies; this read never advances D.
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fn replay_delivery_messages( &self, after: DeliveryCursor, scope: &DeliveryScope, now_ns: i64, limit: u32, ) -> Result<Vec<DeliveryMessage>, StorageError>

Explicit replay does not read or write default delivery positions.
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fn replay_delivery_messages_bounded( &self, after: DeliveryCursor, scope: &DeliveryScope, now_ns: i64, limit: u32, max_bytes: u64, ) -> Result<Vec<DeliveryMessage>, StorageError>

Read a bounded retained prefix strictly after the cursor, without an owner or D writes.
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fn delivery_history_snapshot( &self, scope: &DeliveryScope, now_ns: i64, limit: u32, ) -> Result<DeliverySnapshot, StorageError>

Return recent retained history and a cursor from the same database snapshot.
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fn delivery_history_snapshot_bounded( &self, scope: &DeliveryScope, now_ns: i64, limit: u32, max_bytes: u64, ) -> Result<DeliverySnapshot, StorageError>

Bound history allocation while capturing its resume cursor in the same snapshot.
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fn delivery_history_snapshot_filtered( &self, scope: &DeliveryScope, filter: &DeliveryFilter, now_ns: i64, limit: u32, max_bytes: u64, ) -> Result<DeliverySnapshot, StorageError>

Apply history filters before its limit, with history and cursor in one read transaction.
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fn acknowledge_delivery( &self, owner: DeliveryOwner, group_id: GroupId, cursor: DeliveryCursor, now_ns: i64, ) -> Result<(), StorageError>

Acknowledge after callback return or the next iterator request, never on queue insertion. This also fences progress for rows excluded by a consent/type filter.
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fn acknowledge_delivery_with_clock( &self, owner: DeliveryOwner, group_id: GroupId, cursor: DeliveryCursor, clock: impl FnOnce() -> i64, ) -> Result<(), StorageError>

Advance this group’s D only after a fresh owner check under the state writer.
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impl<C> QueryIncomingEnvelope for C
where C: ConnectionExt,

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fn record_welcome_discovery( &self, group_id: GroupId, welcome_cursor: Cursor, ) -> Result<(), StorageError>

Record the first successful Welcome installation inside its state transaction. Rejoin does not change discovery. Local creation and history import do not call this.
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fn group_ids_discovered_through( &self, target: Cursor, ) -> Result<Vec<GroupId>, StorageError>

Groups first discovered through the fixed own-installation Welcome target. Later joins and local/imported groups cannot expand this captured discovery set.
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fn record_terminal_rejection( &self, topic: &StreamTopic, sequence: Cursor, code: &'static str, ) -> Result<(), StorageError>

Keep one rejection diagnostic per topic, replacing it with a later rejection. Store a stable error code, never an input payload or a formatted error message. The caller records this inside the same state transaction that deletes the pending row.
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fn read_last_rejection( &self, topic: &StreamTopic, ) -> Result<Option<TerminalRejection>, StorageError>

Read the topic’s last committed rejection code without loading envelope data.
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fn admit_ordered_batch( &self, topic: &StreamTopic, after: Cursor, envelopes: &[NewIncomingEnvelope], limits: IncomingLimits, ) -> Result<AdmissionResult, StorageError>

Commit the complete ordered batch and its received position together. An overlap is safe; a gap before the source cursor is rejected. Validation, capacity, or storage failure leaves both F and pending rows unchanged.
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fn topic_progress( &self, topic: &StreamTopic, ) -> Result<TopicProgress, StorageError>

Read P and F from the same row; an unseen topic starts at zero.
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fn first_pending_envelope( &self, topic: &StreamTopic, ) -> Result<Option<StoredIncomingEnvelope>, StorageError>

Read the next actual ID. Missing integer IDs are not queue entries.
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fn pending_envelope( &self, topic: &StreamTopic, sequence: Cursor, ) -> Result<Option<StoredIncomingEnvelope>, StorageError>

Recheck one independent welcome under the caller’s state transaction.
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fn pending_states_through( &self, topic: &StreamTopic, target: Cursor, ) -> Result<Vec<PendingEnvelopeState>, StorageError>

Read actual pending IDs through the fixed target without loading ciphertext. Topic and kind admission limits bound the number of stored rows returned here.
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fn complete_pending_envelope( &self, topic: &StreamTopic, sequence: Cursor, ) -> Result<bool, StorageError>

Complete only the current group or identity head. Welcomes are independent. Call this inside the state transaction that applies or rejects the envelope. Deletion and P advance commit together; an unresolved Welcome keeps its prefix open.
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fn set_incoming_retry( &self, topic: &StreamTopic, sequence: Cursor, retry: &IncomingRetry, ) -> Result<bool, StorageError>

Retry metadata is written only while this work is still current.
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fn ready_welcomes( &self, now_ns: i64, limit: u32, ) -> Result<Vec<StoredIncomingEnvelope>, StorageError>

Read due, unblocked Welcome rows. Production callers must also set a byte bound.
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fn ready_welcomes_bounded( &self, now_ns: i64, limit: u32, max_bytes: u64, ) -> Result<Vec<StoredIncomingEnvelope>, StorageError>

Read a due prefix without loading envelope bytes above the batch budget. Permanently blocked rows require a new coordinator generation, not a timer retry.
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fn blocked_welcomes_bounded( &self, topic: &StreamTopic, after: Cursor, limit: u32, max_bytes: u64, ) -> Result<Vec<StoredIncomingEnvelope>, StorageError>

Read one bounded page for a new coordinator generation to recheck unsupported work.
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fn welcome_barrier_complete( &self, topic: &StreamTopic, target: Cursor, ) -> Result<bool, StorageError>

Later welcome success cannot hide an earlier unresolved welcome.
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fn has_pending_welcomes(&self) -> Result<bool, StorageError>

Keep welcome private keys while any unresolved welcome can still need them.
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fn install_group_anchor( &self, group_id: GroupId, anchor: Cursor, mode: JoinAnchorMode, ) -> Result<(), StorageError>

Install a validated join anchor without rewinding either durable position. The caller must check the group state and install MLS state in the same transaction.
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fn pending_topic_usage( &self, kind: NetworkEntityKind, ) -> Result<Vec<PendingTopicUsage>, StorageError>

Largest queues come first; empty topics are absent and must not be paused.
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impl<C> QueryPreparedEnvelope for C
where C: ConnectionExt,

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fn prepared_envelopes( &self, intent_id: ID, ) -> Result<Option<Vec<u8>>, StorageError>

Read the persisted attempt. None means no attempt is currently prepared.
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fn compare_and_set_prepared_envelopes( &self, intent_id: ID, expected: Option<&[u8]>, replacement: Option<&[u8]>, ) -> Result<bool, StorageError>

Replace only the exact attempt the caller read under the state writer. Late publish replies must use this check before attaching receipt metadata.
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