Struct OperationLog

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pub struct OperationLog {
    db: Database,
    oldest_entry: OnceCell<ChronologicalOperationLogKey>,
}

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§db: Database§oldest_entry: OnceCell<ChronologicalOperationLogKey>

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impl OperationLog

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pub fn new(db: Database) -> Self

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async fn get_oldest_operation_log_key( &self, ) -> Option<ChronologicalOperationLogKey>

Will return the oldest operation log key in the database and cache the result. If no entry exists yet the DB will be queried on each call till an entry is present.

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pub async fn add_operation_log_entry_dbtx( &self, dbtx: &mut DatabaseTransaction<'_>, operation_id: OperationId, operation_type: &str, operation_meta: impl Serialize, )

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pub async fn list_operations( &self, limit: usize, last_seen: Option<ChronologicalOperationLogKey>, ) -> Vec<(ChronologicalOperationLogKey, OperationLogEntry)>

👎Deprecated since 0.6.0: Use paginate_operations_rev instead
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pub async fn paginate_operations_rev( &self, limit: usize, last_seen: Option<ChronologicalOperationLogKey>, ) -> Vec<(ChronologicalOperationLogKey, OperationLogEntry)>

Returns the last limit operations. To fetch the next page, pass the last operation’s ChronologicalOperationLogKey as start_after.

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pub async fn get_operation( &self, operation_id: OperationId, ) -> Option<OperationLogEntry>

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pub async fn get_operation_dbtx( dbtx: &mut DatabaseTransaction<'_>, operation_id: OperationId, ) -> Option<OperationLogEntry>

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pub async fn set_operation_outcome( db: &Database, operation_id: OperationId, outcome: &(impl Serialize + Debug), ) -> Result<()>

Sets the outcome of an operation

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pub fn outcome_or_updates<U, S>( db: &Database, operation_id: OperationId, operation_log_entry: OperationLogEntry, stream_gen: impl FnOnce() -> S, ) -> UpdateStreamOrOutcome<U>
where U: Clone + Serialize + DeserializeOwned + Debug + MaybeSend + MaybeSync + 'static, S: Stream<Item = U> + MaybeSend + 'static,

Returns an a UpdateStreamOrOutcome enum that can be converted into an update stream for easier handling using UpdateStreamOrOutcome::into_stream but can also be matched over to shortcut the handling of final outcomes.

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pub async fn optimistically_set_operation_outcome( db: &Database, operation_id: OperationId, outcome: &(impl Serialize + Debug), )

Tries to set the outcome of an operation, but only logs an error if it fails and does not return it. Since the outcome can always be recomputed from an update stream, failing to save it isn’t a problem in cases where we do this merely for caching.

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impl Clone for OperationLog

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fn clone(&self) -> OperationLog

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for OperationLog

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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 IOperationLog for OperationLog

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fn get_operation<'life0, 'async_trait>( &'life0 self, operation_id: OperationId, ) -> Pin<Box<dyn Future<Output = Option<OperationLogEntry>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

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fn get_operation_dbtx<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, dbtx: &'life1 mut DatabaseTransaction<'life2>, operation_id: OperationId, ) -> Pin<Box<dyn Future<Output = Option<OperationLogEntry>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

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fn add_operation_log_entry_dbtx<'life0, 'life1, 'life2, 'life3, 'async_trait>( &'life0 self, dbtx: &'life1 mut DatabaseTransaction<'life2>, operation_id: OperationId, operation_type: &'life3 str, operation_meta: Value, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, 'life3: 'async_trait,

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fn outcome_or_updates( &self, db: &Database, operation_id: OperationId, operation: OperationLogEntry, stream_gen: Box<dyn FnOnce() -> BoxStream<'static, Value>>, ) -> UpdateStreamOrOutcome<Value>

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