Struct PostgresMessageStore 

pub struct PostgresMessageStore { /* private fields */ }

Implementations

impl PostgresMessageStore

pub fn new(pool: PgPool) -> Self

pub async fn open(database_url: &str) -> Result<Self, Error>

Open a connection pool from a database URL and return a store.

pub async fn migrate(&self) -> Result<(), Error>

Apply the DDL. Safe to call multiple times (uses IF NOT EXISTS).

Trait Implementations

impl MessageStore for PostgresMessageStore

fn save_messages<'life0, 'life1, 'life2, 'life3, 'async_trait>( &'life0 self, conversation_id: &'life1 str, messages: &'life2 [ChatMessage], scope: &'life3 Scope, ) -> Pin<Box<dyn Future<Output = Result<Vec<MessageId>, MemoryError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, 'life3: 'async_trait,

Save one or more messages to a conversation. Returns the ids of the saved messages.

fn get_messages<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, conversation_id: &'life1 str, last_n: Option<usize>, scope: &'life2 Scope, ) -> Pin<Box<dyn Future<Output = Result<Vec<ChatMessage>, MemoryError>> + Send + 'async_trait>>

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

Retrieve messages from a conversation, optionally limited to the last N messages. Results are ordered by seq ascending.

fn list_conversations<'life0, 'life1, 'async_trait>( &'life0 self, scope: &'life1 Scope, ) -> Pin<Box<dyn Future<Output = Result<Vec<String>, MemoryError>> + Send + 'async_trait>>

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

List all conversation ids visible to the given scope.

fn delete_messages<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, conversation_id: &'life1 str, scope: &'life2 Scope, ) -> Pin<Box<dyn Future<Output = Result<u64, MemoryError>> + Send + 'async_trait>>

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

Delete all messages in a conversation. Returns the number of rows deleted.