rocketmq-store 0.9.0

// Copyright 2023 The RocketMQ Rust Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use cheetah_string::CheetahString;

/// Service for checking if message data is in cold storage area
#[derive(Default)]
pub struct ColdDataCheckService;

impl ColdDataCheckService {
    /// Check if the data at the given offset is in page cache
    pub fn is_data_in_page_cache(&self) -> bool {
        true
    }

    /// Check if the message at the given queue offset is in cold data area
    ///
    /// Cold data is data that has not been accessed for a long time and may be
    /// stored on slower storage or has been paged out from memory.
    ///
    /// # Arguments
    /// * `consumer_group` - The consumer group name
    /// * `topic` - The topic name
    /// * `queue_id` - The queue ID
    /// * `queue_offset` - The queue offset to check
    ///
    /// # Returns
    /// `true` if the message is in cold data area, `false` otherwise
    pub fn is_msg_in_cold_area(
        &self,
        _consumer_group: &CheetahString,
        _topic: &CheetahString,
        _queue_id: i32,
        _queue_offset: i64,
    ) -> bool {
        // TODO: Implement actual cold data detection logic
        // This should check if the message's physical offset is in cold storage area
        // based on configuration like cold data threshold time or physical offset threshold
        false
    }
}