feat: log db better maintenance (#16330)

Run a DB clean-up more frequently with an incremental `VACCUM` in it

codex-rs/state/src/runtime/logs.rs

@@ -1,5 +1,7 @@
 use super::*;
 
+const LOG_RETENTION_DAYS: i64 = 10;
+
 impl StateRuntime {
     pub async fn insert_log(&self, entry: &LogEntry) -> anyhow::Result<()> {
         self.insert_logs(std::slice::from_ref(entry)).await
@@ -291,6 +293,22 @@ WHERE id IN (
         Ok(result.rows_affected())
     }
 
+    pub(crate) async fn run_logs_startup_maintenance(&self) -> anyhow::Result<()> {
+        let Some(cutoff) =
+            Utc::now().checked_sub_signed(chrono::Duration::days(LOG_RETENTION_DAYS))
+        else {
+            return Ok(());
+        };
+        self.delete_logs_before(cutoff.timestamp()).await?;
+        sqlx::query("PRAGMA wal_checkpoint(TRUNCATE)")
+            .execute(self.logs_pool.as_ref())
+            .await?;
+        sqlx::query("PRAGMA incremental_vacuum")
+            .execute(self.logs_pool.as_ref())
+            .await?;
+        Ok(())
+    }
+
     /// Query logs with optional filters.
     pub async fn query_logs(&self, query: &LogQuery) -> anyhow::Result<Vec<LogRow>> {
         let mut builder = QueryBuilder::<Sqlite>::new(
@@ -520,6 +538,7 @@ mod tests {
     use crate::logs_db_path;
     use crate::migrations::LOGS_MIGRATOR;
     use crate::state_db_path;
+    use chrono::Utc;
     use pretty_assertions::assert_eq;
     use sqlx::SqlitePool;
     use sqlx::migrate::Migrator;
@@ -607,7 +626,7 @@ mod tests {
         sqlx::query(
             "INSERT INTO logs (ts, ts_nanos, level, target, message, module_path, file, line, thread_id, process_uuid, estimated_bytes) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)",
         )
-        .bind(1_i64)
+        .bind(Utc::now().timestamp())
         .bind(0_i64)
         .bind("INFO")
         .bind("cli")
@@ -676,6 +695,84 @@ mod tests {
         let _ = tokio::fs::remove_dir_all(codex_home).await;
     }
 
+    #[tokio::test]
+    async fn init_recreates_legacy_logs_db_when_log_version_changes() {
+        let codex_home = unique_temp_dir();
+        tokio::fs::create_dir_all(&codex_home)
+            .await
+            .expect("create codex home");
+        let legacy_logs_path = codex_home.join("logs_1.sqlite");
+        let pool = SqlitePool::connect_with(
+            SqliteConnectOptions::new()
+                .filename(&legacy_logs_path)
+                .create_if_missing(true),
+        )
+        .await
+        .expect("open legacy logs db");
+        LOGS_MIGRATOR
+            .run(&pool)
+            .await
+            .expect("apply legacy logs schema");
+        sqlx::query(
+            "INSERT INTO logs (ts, ts_nanos, level, target, feedback_log_body, module_path, file, line, thread_id, process_uuid, estimated_bytes) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)",
+        )
+        .bind(1_i64)
+        .bind(0_i64)
+        .bind("INFO")
+        .bind("cli")
+        .bind("legacy-log-row")
+        .bind("mod")
+        .bind("main.rs")
+        .bind(7_i64)
+        .bind("thread-1")
+        .bind("proc-1")
+        .bind(16_i64)
+        .execute(&pool)
+        .await
+        .expect("insert legacy log row");
+        pool.close().await;
+
+        let runtime = StateRuntime::init(codex_home.clone(), "test-provider".to_string())
+            .await
+            .expect("initialize runtime");
+
+        assert!(
+            !legacy_logs_path.exists(),
+            "legacy logs db should be removed when the version changes"
+        );
+        assert!(
+            logs_db_path(codex_home.as_path()).exists(),
+            "current logs db should be recreated during init"
+        );
+        assert!(
+            runtime
+                .query_logs(&LogQuery::default())
+                .await
+                .expect("query recreated logs db")
+                .is_empty()
+        );
+
+        let _ = tokio::fs::remove_dir_all(codex_home).await;
+    }
+
+    #[tokio::test]
+    async fn init_configures_logs_db_with_incremental_auto_vacuum() {
+        let codex_home = unique_temp_dir();
+        let _runtime = StateRuntime::init(codex_home.clone(), "test-provider".to_string())
+            .await
+            .expect("initialize runtime");
+
+        let pool = open_db_pool(logs_db_path(codex_home.as_path()).as_path()).await;
+        let auto_vacuum = sqlx::query_scalar::<_, i64>("PRAGMA auto_vacuum")
+            .fetch_one(&pool)
+            .await
+            .expect("read auto_vacuum pragma");
+        assert_eq!(auto_vacuum, 2);
+        pool.close().await;
+
+        let _ = tokio::fs::remove_dir_all(codex_home).await;
+    }
+
     #[test]
     fn format_feedback_log_line_matches_feedback_formatter_shape() {
         assert_eq!(