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denoland-deno/cli/cache/mod.rs
David Sherret ecfafda9d8
perf: node cjs & esm analysis cache (#16097)
This commit adds a cache for CJS and ESM analysis that is backed by an
SQLite file.

The connection to the DB is lazily created on first use, so shouldn't
have impact on the startup time.

Benched with running Vite

Deno v1.26:
```
$ deno task dev
Warning deno task is unstable and may drastically change in the future
Task dev deno run -A --unstable --node-modules-dir npm:vite

  VITE v3.1.4  ready in 961 ms

  ➜  Local:   http://localhost:5173/
  ➜  Network: use --host to expose
```

This branch:
```
../deno/target/release/deno task dev
Warning deno task is unstable and may drastically change in the future
Task dev deno run -A --unstable --node-modules-dir npm:vite

  VITE v3.1.4  ready in 330 ms

  ➜  Local:   http://localhost:5173/
  ➜  Network: use --host to expose
```

Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>
2022-10-01 12:15:56 +02:00

132 lines
3.3 KiB
Rust

// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
use crate::errors::get_error_class_name;
use crate::file_fetcher::FileFetcher;
use crate::npm;
use deno_core::futures;
use deno_core::futures::FutureExt;
use deno_core::ModuleSpecifier;
use deno_graph::source::CacheInfo;
use deno_graph::source::LoadFuture;
use deno_graph::source::LoadResponse;
use deno_graph::source::Loader;
use deno_runtime::permissions::Permissions;
use std::sync::Arc;
mod check;
mod common;
mod disk_cache;
mod emit;
mod incremental;
mod node;
mod parsed_source;
pub use check::TypeCheckCache;
pub use common::FastInsecureHasher;
pub use disk_cache::DiskCache;
pub use emit::EmitCache;
pub use incremental::IncrementalCache;
pub use node::NodeAnalysisCache;
pub use parsed_source::ParsedSourceCache;
/// A "wrapper" for the FileFetcher and DiskCache for the Deno CLI that provides
/// a concise interface to the DENO_DIR when building module graphs.
pub struct FetchCacher {
emit_cache: EmitCache,
dynamic_permissions: Permissions,
file_fetcher: Arc<FileFetcher>,
root_permissions: Permissions,
}
impl FetchCacher {
pub fn new(
emit_cache: EmitCache,
file_fetcher: FileFetcher,
root_permissions: Permissions,
dynamic_permissions: Permissions,
) -> Self {
let file_fetcher = Arc::new(file_fetcher);
Self {
emit_cache,
dynamic_permissions,
file_fetcher,
root_permissions,
}
}
}
impl Loader for FetchCacher {
fn get_cache_info(&self, specifier: &ModuleSpecifier) -> Option<CacheInfo> {
if specifier.scheme() == "npm" {
return None;
}
let local = self.file_fetcher.get_local_path(specifier)?;
if local.is_file() {
let emit = self
.emit_cache
.get_emit_filepath(specifier)
.filter(|p| p.is_file());
Some(CacheInfo {
local: Some(local),
emit,
map: None,
})
} else {
None
}
}
fn load(
&mut self,
specifier: &ModuleSpecifier,
is_dynamic: bool,
) -> LoadFuture {
if specifier.scheme() == "npm" {
return Box::pin(futures::future::ready(
match npm::NpmPackageReference::from_specifier(specifier) {
Ok(_) => Ok(Some(deno_graph::source::LoadResponse::External {
specifier: specifier.clone(),
})),
Err(err) => Err(err),
},
));
}
let specifier = specifier.clone();
let mut permissions = if is_dynamic {
self.dynamic_permissions.clone()
} else {
self.root_permissions.clone()
};
let file_fetcher = self.file_fetcher.clone();
async move {
file_fetcher
.fetch(&specifier, &mut permissions)
.await
.map_or_else(
|err| {
if let Some(err) = err.downcast_ref::<std::io::Error>() {
if err.kind() == std::io::ErrorKind::NotFound {
return Ok(None);
}
} else if get_error_class_name(&err) == "NotFound" {
return Ok(None);
}
Err(err)
},
|file| {
Ok(Some(LoadResponse::Module {
specifier: file.specifier,
maybe_headers: file.maybe_headers,
content: file.source,
}))
},
)
}
.boxed()
}
}