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perf: schema updates for better event indexing

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This commit is contained in:
Greg Heartsfield 2022-12-14 22:27:32 -06:00
parent bbe359364a
commit c48e45686d
1 changed files with 26 additions and 4 deletions
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30
src/schema.rs
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@ -20,7 +20,7 @@ pragma mmap_size = 536870912; -- 512MB of mmap
"##;
/// Latest database version
pub const DB_VERSION: usize = 7;
pub const DB_VERSION: usize = 8;
/// Schema definition
const INIT_SQL: &str = formatcp!(
@ -48,11 +48,9 @@ content TEXT NOT NULL -- serialized json of event object
-- Event Indexes
CREATE UNIQUE INDEX IF NOT EXISTS event_hash_index ON event(event_hash);
CREATE INDEX IF NOT EXISTS created_at_index ON event(created_at);
CREATE INDEX IF NOT EXISTS author_index ON event(author);
CREATE INDEX IF NOT EXISTS delegated_by_index ON event(delegated_by);
CREATE INDEX IF NOT EXISTS kind_index ON event(kind);
CREATE INDEX IF NOT EXISTS kind_created_index ON event(kind,created_at);
CREATE INDEX IF NOT EXISTS event_composite_index ON event(kind,created_at);
-- Tag Table
-- Tag values are stored as either a BLOB (if they come in as a
@ -158,6 +156,9 @@ pub fn upgrade_db(conn: &mut PooledConnection) -> Result<()> {
if curr_version == 6 {
curr_version = mig_6_to_7(conn)?;
}
if curr_version == 7 {
curr_version = mig_7_to_8(conn)?;
}
if curr_version == DB_VERSION {
info!(
"All migration scripts completed successfully. Welcome to v{}.",
@ -374,3 +375,24 @@ PRAGMA user_version = 7;
}
Ok(7)
}
fn mig_7_to_8(conn: &mut PooledConnection) -> Result<usize> {
info!("database schema needs update from 7->8");
// Remove redundant indexes, and add a better multi-column index.
let upgrade_sql = r##"
DROP INDEX IF EXISTS created_at_index;
DROP INDEX IF EXISTS kind_index;
CREATE INDEX IF NOT EXISTS event_composite_index ON event(kind,created_at);
PRAGMA user_version = 8;
"##;
match conn.execute_batch(upgrade_sql) {
Ok(()) => {
info!("database schema upgraded v7 -> v8");
}
Err(err) => {
error!("update failed: {}", err);
panic!("database could not be upgraded");
}
}
Ok(8)
}