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