fn jump_near_key()

in below/store/src/cursor.rs [615:637]

• 20 lines of code
• 4 McCabe index (conditional complexity)

    fn jump_near_key(&mut self, key: &u64, _direction: Direction) {
        let time_offset = key % SHARD_TIME;
        let shard = key - time_offset;
        self.set_offset(StoreOffset::new(Some(shard), None));
        // Move to the end of the shard.
        if self.advance_index(Direction::Reverse) {
            if let Some(last_entry) = self.get_index_entry() {
                let last_entry_index_offset = self
                    .get_offset()
                    .get_index_offset()
                    .expect("get_index_offset should return Some if get_index_entry returns Some");
                let last_entry_time_offset = last_entry.timestamp % SHARD_TIME;
                if last_entry_time_offset != 0 {
                    // Assume samples are recorded in constant interval and
                    // scale index offset by time offset
                    let index_offset_hint = (last_entry_index_offset as f64
                        / last_entry_time_offset as f64
                        * time_offset as f64) as usize;
                    self.set_offset(StoreOffset::new(Some(shard), Some(index_offset_hint)));
                }
            }
        }
    }