Trait CheckpointStore 

pub trait CheckpointStore: Send + Sync {
    // Required methods
    fn load<'life0, 'life1, 'life2, 'async_trait>(
        &'life0 self,
        chain_id: &'life1 str,
        indexer_id: &'life2 str,
    ) -> Pin<Box<dyn Future<Output = Result<Option<Checkpoint>, IndexerError>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait,
             'life2: 'async_trait;
    fn save<'life0, 'async_trait>(
        &'life0 self,
        checkpoint: Checkpoint,
    ) -> Pin<Box<dyn Future<Output = Result<(), IndexerError>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;
    fn delete<'life0, 'life1, 'life2, 'async_trait>(
        &'life0 self,
        chain_id: &'life1 str,
        indexer_id: &'life2 str,
    ) -> Pin<Box<dyn Future<Output = Result<(), IndexerError>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait,
             'life2: 'async_trait;
}

Trait for storing and loading checkpoints.

Implementations include MemoryCheckpointStore, SqliteCheckpointStore, and PostgresCheckpointStore.

Required Methods

fn load<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, chain_id: &'life1 str, indexer_id: &'life2 str, ) -> Pin<Box<dyn Future<Output = Result<Option<Checkpoint>, IndexerError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Load the latest checkpoint for a given chain + indexer pair.

fn save<'life0, 'async_trait>( &'life0 self, checkpoint: Checkpoint, ) -> Pin<Box<dyn Future<Output = Result<(), IndexerError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Save (upsert) a checkpoint.

fn delete<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, chain_id: &'life1 str, indexer_id: &'life2 str, ) -> Pin<Box<dyn Future<Output = Result<(), IndexerError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Delete a checkpoint (e.g. when resetting an indexer).

Implementors

impl CheckpointStore for MemoryCheckpointStore