Implemented EXPIREAT and PEXPIREAT

herodb/src/cmd.rs

@@ -44,6 +44,8 @@ pub enum Cmd {
     Ttl(String),
     Expire(String, i64),
     PExpire(String, i64),
+    ExpireAt(String, i64),
+    PExpireAt(String, i64),
     Persist(String),
     Exists(String),
     ExistsMulti(Vec<String>),
@@ -417,6 +419,20 @@ impl Cmd {
                             let ms = cmd[2].parse::<i64>().map_err(|_| DBError("ERR value is not an integer or out of range".to_string()))?;
                             Cmd::PExpire(cmd[1].clone(), ms)
                         }
+                        "expireat" => {
+                            if cmd.len() != 3 {
+                                return Err(DBError("wrong number of arguments for EXPIREAT command".to_string()));
+                            }
+                            let ts = cmd[2].parse::<i64>().map_err(|_| DBError("ERR value is not an integer or out of range".to_string()))?;
+                            Cmd::ExpireAt(cmd[1].clone(), ts)
+                        }
+                        "pexpireat" => {
+                            if cmd.len() != 3 {
+                                return Err(DBError("wrong number of arguments for PEXPIREAT command".to_string()));
+                            }
+                            let ts_ms = cmd[2].parse::<i64>().map_err(|_| DBError("ERR value is not an integer or out of range".to_string()))?;
+                            Cmd::PExpireAt(cmd[1].clone(), ts_ms)
+                        }
                         "persist" => {
                             if cmd.len() != 2 {
                                 return Err(DBError("wrong number of arguments for PERSIST command".to_string()));
@@ -676,6 +692,8 @@ impl Cmd {
             Cmd::Ttl(key) => ttl_cmd(server, &key).await,
             Cmd::Expire(key, secs) => expire_cmd(server, &key, secs).await,
             Cmd::PExpire(key, ms) => pexpire_cmd(server, &key, ms).await,
+            Cmd::ExpireAt(key, ts_secs) => expireat_cmd(server, &key, ts_secs).await,
+            Cmd::PExpireAt(key, ts_ms) => pexpireat_cmd(server, &key, ts_ms).await,
             Cmd::Persist(key) => persist_cmd(server, &key).await,
             Cmd::Exists(key) => exists_cmd(server, &key).await,
             Cmd::ExistsMulti(keys) => exists_multi_cmd(server, &keys).await,
@@ -1456,6 +1474,21 @@ async fn persist_cmd(server: &Server, key: &str) -> Result<Protocol, DBError> {
         Err(e) => Ok(Protocol::err(&e.0)),
     }
 }
+// EXPIREAT key timestamp-seconds -> 1 if timeout set, 0 otherwise
+async fn expireat_cmd(server: &Server, key: &str, ts_secs: i64) -> Result<Protocol, DBError> {
+    match server.current_storage()?.expire_at_seconds(key, ts_secs) {
+        Ok(applied) => Ok(Protocol::SimpleString(if applied { "1" } else { "0" }.to_string())),
+        Err(e) => Ok(Protocol::err(&e.0)),
+    }
+}
+
+// PEXPIREAT key timestamp-milliseconds -> 1 if timeout set, 0 otherwise
+async fn pexpireat_cmd(server: &Server, key: &str, ts_ms: i64) -> Result<Protocol, DBError> {
+    match server.current_storage()?.pexpire_at_millis(key, ts_ms) {
+        Ok(applied) => Ok(Protocol::SimpleString(if applied { "1" } else { "0" }.to_string())),
+        Err(e) => Ok(Protocol::err(&e.0)),
+    }
+}
 
 async fn client_setname_cmd(server: &mut Server, name: &str) -> Result<Protocol, DBError> {
     server.client_name = Some(name.to_string());

herodb/src/storage/storage_extra.rs

@@ -164,6 +164,50 @@ impl Storage {
         write_txn.commit()?;
         Ok(removed)
     }
+
+    // Absolute EXPIREAT in seconds since epoch
+    // Returns true if applied (key exists and is string), false otherwise
+    pub fn expire_at_seconds(&self, key: &str, ts_secs: i64) -> Result<bool, DBError> {
+        let mut applied = false;
+        let write_txn = self.db.begin_write()?;
+        {
+            let types_table = write_txn.open_table(TYPES_TABLE)?;
+            let is_string = types_table
+                .get(key)?
+                .map(|v| v.value() == "string")
+                .unwrap_or(false);
+            if is_string {
+                let mut expiration_table = write_txn.open_table(EXPIRATION_TABLE)?;
+                let expires_at_ms: u128 = if ts_secs <= 0 { 0 } else { (ts_secs as u128) * 1000 };
+                expiration_table.insert(key, &((expires_at_ms as u64)))?;
+                applied = true;
+            }
+        }
+        write_txn.commit()?;
+        Ok(applied)
+    }
+
+    // Absolute PEXPIREAT in milliseconds since epoch
+    // Returns true if applied (key exists and is string), false otherwise
+    pub fn pexpire_at_millis(&self, key: &str, ts_ms: i64) -> Result<bool, DBError> {
+        let mut applied = false;
+        let write_txn = self.db.begin_write()?;
+        {
+            let types_table = write_txn.open_table(TYPES_TABLE)?;
+            let is_string = types_table
+                .get(key)?
+                .map(|v| v.value() == "string")
+                .unwrap_or(false);
+            if is_string {
+                let mut expiration_table = write_txn.open_table(EXPIRATION_TABLE)?;
+                let expires_at_ms: u128 = if ts_ms <= 0 { 0 } else { ts_ms as u128 };
+                expiration_table.insert(key, &((expires_at_ms as u64)))?;
+                applied = true;
+            }
+        }
+        write_txn.commit()?;
+        Ok(applied)
+    }
 }
 
 // Utility function for glob pattern matching

herodb/tests/usage_suite.rs

@@ -850,3 +850,43 @@ async fn test_13_dbsize() {
     let n_final = send_cmd(&mut s, &["DBSIZE"]).await;
     assert_contains(&n_final, "0", "DBSIZE after deleting all keys should be 0");
 }
+#[tokio::test]
+async fn test_14_expireat_pexpireat() {
+    use std::time::{SystemTime, UNIX_EPOCH};
+
+    let (server, port) = start_test_server("expireat_suite").await;
+    spawn_listener(server, port).await;
+    sleep(Duration::from_millis(150)).await;
+
+    let mut s = connect(port).await;
+
+    // EXPIREAT: seconds since epoch
+    let now_secs = SystemTime::now().duration_since(UNIX_EPOCH).unwrap().as_secs() as i64;
+    let _ = send_cmd(&mut s, &["SET", "exp:at:s", "v"]).await;
+    let exat = send_cmd(&mut s, &["EXPIREAT", "exp:at:s", &format!("{}", now_secs + 1)]).await;
+    assert_contains(&exat, "1", "EXPIREAT exp:at:s now+1s -> 1 (applied)");
+    let ttl1 = send_cmd(&mut s, &["TTL", "exp:at:s"]).await;
+    assert!(
+        ttl1.contains("1") || ttl1.contains("0"),
+        "TTL exp:at:s should be 1 or 0 shortly after EXPIREAT, got: {}",
+        ttl1
+    );
+    sleep(Duration::from_millis(1200)).await;
+    let exists_after_exat = send_cmd(&mut s, &["EXISTS", "exp:at:s"]).await;
+    assert_contains(&exists_after_exat, "0", "EXISTS exp:at:s after EXPIREAT expiry -> 0");
+
+    // PEXPIREAT: milliseconds since epoch
+    let now_ms = SystemTime::now().duration_since(UNIX_EPOCH).unwrap().as_millis() as i64;
+    let _ = send_cmd(&mut s, &["SET", "exp:at:ms", "v"]).await;
+    let pexat = send_cmd(&mut s, &["PEXPIREAT", "exp:at:ms", &format!("{}", now_ms + 450)]).await;
+    assert_contains(&pexat, "1", "PEXPIREAT exp:at:ms now+450ms -> 1 (applied)");
+    let ttl2 = send_cmd(&mut s, &["TTL", "exp:at:ms"]).await;
+    assert!(
+        ttl2.contains("0") || ttl2.contains("1"),
+        "TTL exp:at:ms should be 0..1 soon after PEXPIREAT, got: {}",
+        ttl2
+    );
+    sleep(Duration::from_millis(600)).await;
+    let exists_after_pexat = send_cmd(&mut s, &["EXISTS", "exp:at:ms"]).await;
+    assert_contains(&exists_after_pexat, "0", "EXISTS exp:at:ms after PEXPIREAT expiry -> 0");
+}