65 lines
1.7 KiB
Rust
65 lines
1.7 KiB
Rust
use std::time::Duration;
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use rand::Rng;
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use super::{StorageFactory, TorrentStorage};
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pub struct SlowStorageFactory {
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underlying_factory: Box<dyn StorageFactory>,
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}
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impl SlowStorageFactory {
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pub fn new(underlying: Box<dyn StorageFactory>) -> Self {
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Self {
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underlying_factory: underlying,
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}
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}
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}
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impl StorageFactory for SlowStorageFactory {
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fn init_storage(
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&self,
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info: &crate::ManagedTorrentInfo,
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) -> anyhow::Result<Box<dyn TorrentStorage>> {
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Ok(Box::new(SlowStorage {
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underlying: self.underlying_factory.init_storage(info)?,
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}))
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}
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}
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struct SlowStorage {
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underlying: Box<dyn TorrentStorage>,
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}
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fn random_sleep() {
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let sl = rand::thread_rng().gen_range(0f64..0.1f64);
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let sl = Duration::from_secs_f64(sl);
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tracing::debug!(duration = ?sl, "sleeping");
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std::thread::sleep(sl)
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}
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impl TorrentStorage for SlowStorage {
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fn pread_exact(&self, file_id: usize, offset: u64, buf: &mut [u8]) -> anyhow::Result<()> {
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random_sleep();
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self.underlying.pread_exact(file_id, offset, buf)
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}
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fn pwrite_all(&self, file_id: usize, offset: u64, buf: &[u8]) -> anyhow::Result<()> {
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random_sleep();
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self.underlying.pwrite_all(file_id, offset, buf)
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}
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fn remove_file(&self, file_id: usize, filename: &std::path::Path) -> anyhow::Result<()> {
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self.underlying.remove_file(file_id, filename)
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}
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fn ensure_file_length(&self, file_id: usize, length: u64) -> anyhow::Result<()> {
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self.underlying.ensure_file_length(file_id, length)
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}
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fn take(&self) -> anyhow::Result<Box<dyn TorrentStorage>> {
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Ok(Box::new(Self {
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underlying: self.underlying.take()?,
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}))
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}
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}
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