cat_gateway::db::event

Struct EventDB

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pub(crate) struct EventDB {}
Expand description

The Catalyst Event SQL Database

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impl EventDB

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pub(crate) async fn schema_version_check() -> Result<i32>

Check the schema version. return the current schema version if its current. Otherwise return an error.

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impl EventDB

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pub(crate) fn is_deep_query_enabled() -> bool

Determine if deep query inspection is enabled.

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pub(crate) fn modify_deep_query(enable: bool)

Modify the deep query inspection setting.

§Arguments
  • enable - Set the DeepQueryInspection setting to this value.
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pub(crate) async fn query( stmt: &str, params: &[&(dyn ToSql + Sync)], ) -> Result<Vec<Row>>

Query the database.

If deep query inspection is enabled, this will log the query plan inside a rolled-back transaction, before running the query.

§Arguments
  • stmt - &str SQL statement.
  • params - &[&(dyn ToSql + Sync)] SQL parameters.
§Returns

anyhow::Result<Vec<Row>>

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pub(crate) async fn query_stream( stmt: &str, params: &[&(dyn ToSql + Sync)], ) -> Result<impl Stream<Item = Result<Row>>>

Query the database and return a async stream of rows.

If deep query inspection is enabled, this will log the query plan inside a rolled-back transaction, before running the query.

§Arguments
  • stmt - &str SQL statement.
  • params - &[&(dyn ToSql + Sync)] SQL parameters.
§Returns

anyhow::Result<impl Stream<Item = anyhow::Result<Row>>>

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pub(crate) async fn query_one( stmt: &str, params: &[&(dyn ToSql + Sync)], ) -> Result<Row>

Query the database for a single row.

§Arguments
  • stmt - &str SQL statement.
  • params - &[&(dyn ToSql + Sync)] SQL parameters.
§Returns

Result<Row, anyhow::Error>

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pub(crate) async fn modify( stmt: &str, params: &[&(dyn ToSql + Sync)], ) -> Result<()>

Modify the database.

Use this for UPDATE, DELETE, and other DB statements that don’t return data.

§Arguments
  • stmt - &str SQL statement.
  • params - &[&(dyn ToSql + Sync)] SQL parameters.
§Returns

anyhow::Result<()>

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async fn explain_analyze_rollback( stmt: &str, params: &[&(dyn ToSql + Sync)], ) -> Result<()>

Prepend EXPLAIN ANALYZE to the query, and rollback the transaction.

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async fn explain_analyze_commit( stmt: &str, params: &[&(dyn ToSql + Sync)], ) -> Result<()>

Prepend EXPLAIN ANALYZE to the query, and commit the transaction.

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async fn explain_analyze( stmt: &str, params: &[&(dyn ToSql + Sync)], rollback: bool, ) -> Result<()>

Prepend EXPLAIN ANALYZE to the query.

Log the query plan inside a transaction that may be committed or rolled back.

§Arguments
  • stmt - &str SQL statement.
  • params - &[&(dyn ToSql + Sync)] SQL parameters.
  • rollback - bool whether to roll back the transaction or not.

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