qiniu_upload_manager/data_partition_provider/
multiply.rs

1use super::{DataPartitionProvider, DataPartitionProviderFeedback, PartSize};
2use std::num::NonZeroU64;
3
4/// 整数倍分片大小提供者
5///
6/// 基于一个分片大小提供者实例，如果提供的分片大小不是指定倍数的整数倍，则下调到它的整数倍
7#[derive(Debug, Clone, Copy)]
8pub struct MultiplyDataPartitionProvider<P: ?Sized> {
9    multiply: NonZeroU64,
10    base: P,
11}
12
13impl<P: DataPartitionProvider> MultiplyDataPartitionProvider<P> {
14    /// 创建整数倍分片大小提供者
15    ///
16    /// 如果传入 `0` 将返回 [`None`]。
17    #[inline]
18    pub fn new(base: P, multiply: u64) -> Option<Self> {
19        NonZeroU64::new(multiply).map(|multiply| Self::new_with_non_zero_multiply(base, multiply))
20    }
21
22    /// 创建整数倍分片大小提供者
23    ///
24    /// 提供 [`NonZeroU64`] 作为分片大小类型。
25    #[inline]
26    pub fn new_with_non_zero_multiply(base: P, multiply: NonZeroU64) -> Self {
27        Self { base, multiply }
28    }
29}
30
31impl<P: DataPartitionProvider + Default> Default for MultiplyDataPartitionProvider<P> {
32    #[inline]
33    fn default() -> Self {
34        Self {
35            base: Default::default(),
36            multiply: NonZeroU64::new(1 << 20).unwrap(),
37        }
38    }
39}
40
41impl<P> MultiplyDataPartitionProvider<P> {
42    /// 获取倍数
43    #[inline]
44    pub const fn multiply(&self) -> NonZeroU64 {
45        self.multiply
46    }
47}
48
49impl<P: DataPartitionProvider + Clone> DataPartitionProvider for MultiplyDataPartitionProvider<P> {
50    #[inline]
51    fn part_size(&self) -> PartSize {
52        let base_partition = self.base.part_size().as_non_zero_u64();
53        let multiply = self.multiply.get();
54        let partition = base_partition.max(self.multiply).get() / multiply * multiply;
55        NonZeroU64::new(partition).unwrap().into()
56    }
57
58    #[inline]
59    fn feedback(&self, feedback: DataPartitionProviderFeedback<'_>) {
60        self.base.feedback(feedback)
61    }
62}
qiniu_upload_manager/data_partition_provider/multiply.rs

qiniu_upload_manager/data_partition_provider/
multiply.rs
