110 lines
2.9 KiB
Rust
110 lines
2.9 KiB
Rust
/*
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A storage middleware that logs the time underlying storage operations took.
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*/
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use crate::{
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storage::{StorageFactory, StorageFactoryExt, TorrentStorage},
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ManagedTorrentInfo,
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};
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#[derive(Clone)]
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pub struct TimingStorageFactory<U> {
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name: String,
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underlying_factory: U,
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}
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impl<U> TimingStorageFactory<U> {
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pub fn new(name: String, underlying: U) -> Self {
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Self {
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name,
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underlying_factory: underlying,
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}
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}
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}
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impl<U: StorageFactory + Clone> StorageFactory for TimingStorageFactory<U> {
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type Storage = TimingStorage<U::Storage>;
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fn create(&self, info: &crate::ManagedTorrentInfo) -> anyhow::Result<Self::Storage> {
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Ok(TimingStorage {
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name: self.name.clone(),
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underlying: self.underlying_factory.create(info)?,
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})
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}
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fn is_type_id(&self, type_id: std::any::TypeId) -> bool {
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self.underlying_factory.is_type_id(type_id)
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}
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fn clone_box(&self) -> crate::storage::BoxStorageFactory {
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self.clone().boxed()
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}
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}
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pub struct TimingStorage<U> {
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name: String,
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underlying: U,
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}
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macro_rules! timeit {
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($name:expr, $op:expr, $($rest:tt),*) => {
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{
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let start = std::time::Instant::now();
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let r = $op;
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let elapsed = start.elapsed();
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tracing::debug!(name = $name, $($rest),*, elapsed_micros=elapsed.as_micros());
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r
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}
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};
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}
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impl<U: TorrentStorage> TorrentStorage for TimingStorage<U> {
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fn pread_exact(&self, file_id: usize, offset: u64, buf: &mut [u8]) -> anyhow::Result<()> {
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let storage = &self.name;
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let len = buf.len();
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timeit!(
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"pread_exact",
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self.underlying.pread_exact(file_id, offset, buf),
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file_id,
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offset,
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storage,
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len
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)
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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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let storage = &self.name;
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let len = buf.len();
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timeit!(
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"pwrite_all",
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self.underlying.pwrite_all(file_id, offset, buf),
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file_id,
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offset,
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storage,
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len
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)
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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(TimingStorage {
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underlying: self.underlying.take()?,
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name: self.name.clone(),
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}))
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}
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fn remove_directory_if_empty(&self, path: &std::path::Path) -> anyhow::Result<()> {
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self.underlying.remove_directory_if_empty(path)
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}
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fn init(&mut self, meta: &ManagedTorrentInfo) -> anyhow::Result<()> {
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self.underlying.init(meta)
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}
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}
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