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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
use crate::cache::DenoDir;
use crate::cache::GlobalHttpCache;
use crate::cache::HttpCache;
use crate::cache::LocalLspHttpCache;
use crate::lsp::config::Config;
use crate::lsp::logging::lsp_log;
use crate::lsp::logging::lsp_warn;
use deno_core::url::Url;
use deno_core::ModuleSpecifier;
use deno_path_util::url_to_file_path;
use std::collections::BTreeMap;
use std::fs;
use std::path::Path;
use std::sync::Arc;
use std::time::SystemTime;
pub fn calculate_fs_version(
cache: &LspCache,
specifier: &ModuleSpecifier,
file_referrer: Option<&ModuleSpecifier>,
) -> Option<String> {
match specifier.scheme() {
"npm" | "node" | "data" | "blob" => None,
"file" => url_to_file_path(specifier)
.ok()
.and_then(|path| calculate_fs_version_at_path(&path)),
_ => calculate_fs_version_in_cache(cache, specifier, file_referrer),
}
}
/// Calculate a version for for a given path.
pub fn calculate_fs_version_at_path(path: &Path) -> Option<String> {
let metadata = fs::metadata(path).ok()?;
if let Ok(modified) = metadata.modified() {
if let Ok(n) = modified.duration_since(SystemTime::UNIX_EPOCH) {
Some(n.as_millis().to_string())
} else {
Some("1".to_string())
}
} else {
Some("1".to_string())
}
}
fn calculate_fs_version_in_cache(
cache: &LspCache,
specifier: &ModuleSpecifier,
file_referrer: Option<&ModuleSpecifier>,
) -> Option<String> {
let http_cache = cache.for_specifier(file_referrer);
let Ok(cache_key) = http_cache.cache_item_key(specifier) else {
return Some("1".to_string());
};
match http_cache.read_modified_time(&cache_key) {
Ok(Some(modified)) => {
match modified.duration_since(SystemTime::UNIX_EPOCH) {
Ok(n) => Some(n.as_millis().to_string()),
Err(_) => Some("1".to_string()),
}
}
Ok(None) => None,
Err(_) => Some("1".to_string()),
}
}
#[derive(Debug, Clone)]
pub struct LspCache {
deno_dir: DenoDir,
global: Arc<GlobalHttpCache>,
vendors_by_scope: BTreeMap<ModuleSpecifier, Option<Arc<LocalLspHttpCache>>>,
}
impl Default for LspCache {
fn default() -> Self {
Self::new(None)
}
}
impl LspCache {
pub fn new(global_cache_url: Option<Url>) -> Self {
let global_cache_path = global_cache_url.and_then(|s| {
url_to_file_path(&s)
.inspect(|p| {
lsp_log!("Resolved global cache path: \"{}\"", p.to_string_lossy());
})
.inspect_err(|err| {
lsp_warn!("Failed to resolve custom cache path: {err}");
})
.ok()
});
let deno_dir = DenoDir::new(global_cache_path)
.expect("should be infallible with absolute custom root");
let global = Arc::new(GlobalHttpCache::new(
deno_dir.remote_folder_path(),
crate::cache::RealDenoCacheEnv,
));
Self {
deno_dir,
global,
vendors_by_scope: Default::default(),
}
}
pub fn update_config(&mut self, config: &Config) {
self.vendors_by_scope = config
.tree
.data_by_scope()
.iter()
.map(|(scope, config_data)| {
(
scope.clone(),
config_data.vendor_dir.as_ref().map(|v| {
Arc::new(LocalLspHttpCache::new(v.clone(), self.global.clone()))
}),
)
})
.collect();
}
pub fn deno_dir(&self) -> &DenoDir {
&self.deno_dir
}
pub fn global(&self) -> &Arc<GlobalHttpCache> {
&self.global
}
pub fn for_specifier(
&self,
file_referrer: Option<&ModuleSpecifier>,
) -> Arc<dyn HttpCache> {
let Some(file_referrer) = file_referrer else {
return self.global.clone();
};
self
.vendors_by_scope
.iter()
.rfind(|(s, _)| file_referrer.as_str().starts_with(s.as_str()))
.and_then(|(_, v)| v.clone().map(|v| v as _))
.unwrap_or(self.global.clone() as _)
}
pub fn vendored_specifier(
&self,
specifier: &ModuleSpecifier,
file_referrer: Option<&ModuleSpecifier>,
) -> Option<ModuleSpecifier> {
let file_referrer = file_referrer?;
if !matches!(specifier.scheme(), "http" | "https") {
return None;
}
let vendor = self
.vendors_by_scope
.iter()
.rfind(|(s, _)| file_referrer.as_str().starts_with(s.as_str()))?
.1
.as_ref()?;
vendor.get_file_url(specifier)
}
pub fn unvendored_specifier(
&self,
specifier: &ModuleSpecifier,
) -> Option<ModuleSpecifier> {
let path = url_to_file_path(specifier).ok()?;
let vendor = self
.vendors_by_scope
.iter()
.rfind(|(s, _)| specifier.as_str().starts_with(s.as_str()))?
.1
.as_ref()?;
vendor.get_remote_url(&path)
}
pub fn is_valid_file_referrer(&self, specifier: &ModuleSpecifier) -> bool {
if let Ok(path) = url_to_file_path(specifier) {
if !path.starts_with(&self.deno_dir().root) {
return true;
}
}
false
}
}
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