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feat: implement HashingReader for efficient file hashing and update package indexing

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This commit is contained in:
SFG545
2026-02-28 15:48:50 -06:00
parent 35d063b9ca
commit 887f0135d1
1 changed files with 160 additions and 104 deletions
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src/db/repo.rs
+86 -30
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@@ -2,6 +2,7 @@
use anyhow::{Context, Result};
use rusqlite::{Connection, params};
use sha2::{Digest, Sha256, Sha512};
use std::fs;
use std::io::{Read, Write};
use std::path::{Path, PathBuf};
@@ -32,6 +33,40 @@ pub struct RepoManager {
pub repo_dir: PathBuf,
}
struct HashingReader<R> {
inner: R,
sha256: Sha256,
sha512: Sha512,
}
impl<R> HashingReader<R> {
fn new(inner: R) -> Self {
Self {
inner,
sha256: Sha256::new(),
sha512: Sha512::new(),
}
}
fn finalize_hex(self) -> (String, String) {
(
format!("{:x}", self.sha256.finalize()),
format!("{:x}", self.sha512.finalize()),
)
}
}
impl<R: Read> Read for HashingReader<R> {
fn read(&mut self, buf: &mut [u8]) -> std::io::Result<usize> {
let n = self.inner.read(buf)?;
if n > 0 {
self.sha256.update(&buf[..n]);
self.sha512.update(&buf[..n]);
}
Ok(n)
}
}
struct IndexedPackage {
name: String,
version: String,
@@ -108,13 +143,32 @@ impl RepoManager {
let mut conn = Connection::open(&db_path)
.with_context(|| format!("Failed to create repo database at {}", db_path.display()))?;
self.configure_repo_build_pragmas(&mut conn)?;
self.init_repo_schema(&mut conn)?;
let package_paths = self.collect_repo_package_paths()?;
let indexed_packages = self.collect_indexed_packages_parallel(&package_paths)?;
conn.execute_batch("BEGIN IMMEDIATE TRANSACTION;")
.context("Failed to begin repo DB write transaction")?;
let insert_result: Result<()> = (|| {
for indexed in indexed_packages {
self.insert_indexed_package(&mut conn, indexed)?;
}
Ok(())
})();
match insert_result {
Ok(()) => {
conn.execute_batch("COMMIT;")
.context("Failed to commit repo DB write transaction")?;
}
Err(err) => {
let _ = conn.execute_batch("ROLLBACK;");
return Err(err);
}
}
self.create_repo_indexes(&mut conn)?;
conn.close().map_err(|(_, e)| e)?;
@@ -127,6 +181,19 @@ impl RepoManager {
Ok(compressed_db_path)
}
fn configure_repo_build_pragmas(&self, conn: &mut Connection) -> Result<()> {
// Speed-focused settings are scoped to this temporary repo DB build process.
conn.execute_batch(
"PRAGMA synchronous = OFF;
PRAGMA journal_mode = MEMORY;
PRAGMA temp_store = MEMORY;
PRAGMA locking_mode = EXCLUSIVE;
PRAGMA cache_size = -200000;",
)
.context("Failed to apply SQLite build PRAGMAs for repo DB creation")?;
Ok(())
}
fn collect_repo_package_paths(&self) -> Result<Vec<PathBuf>> {
let mut package_paths = Vec::new();
for entry in fs::read_dir(&self.repo_dir)
@@ -223,14 +290,21 @@ impl RepoManager {
package_id INTEGER,
path TEXT NOT NULL,
FOREIGN KEY(package_id) REFERENCES packages(id)
);
CREATE INDEX idx_packages_name ON packages(name);
);",
)
.context("Failed to initialize repo schema")?;
Ok(())
}
fn create_repo_indexes(&self, conn: &mut Connection) -> Result<()> {
conn.execute_batch(
"CREATE INDEX idx_packages_name ON packages(name);
CREATE INDEX idx_provides_name ON provides(name);
CREATE INDEX idx_dependencies_name ON dependencies(name);
CREATE INDEX idx_dependencies_kind ON dependencies(kind);
CREATE INDEX idx_repo_files_path ON files(path);",
)
.context("Failed to initialize repo schema")?;
.context("Failed to create repo DB indexes")?;
Ok(())
}
@@ -242,13 +316,9 @@ impl RepoManager {
.and_then(|name| name.to_str())
.with_context(|| format!("Invalid package filename: {}", pkg_path.display()))?
.to_string();
let size = pkg_path.metadata()?.len();
let (sha256, sha512) = self.calculate_hashes(pkg_path)?;
// Read .metadata.toml from archive
let file = fs::File::open(pkg_path)?;
let zstd_decoder = zstd::stream::read::Decoder::new(file)?;
let mut archive = tar::Archive::new(zstd_decoder);
let size = file.metadata()?.len();
let mut hashing_reader = HashingReader::new(file);
let mut name = String::new();
let mut version = String::new();
@@ -261,6 +331,9 @@ impl RepoManager {
let mut optional_dependencies = Vec::new();
let mut archive_files = Vec::new();
{
let zstd_decoder = zstd::stream::read::Decoder::new(&mut hashing_reader)?;
let mut archive = tar::Archive::new(zstd_decoder);
for entry in archive.entries()? {
let mut entry = entry?;
let path = entry.path()?;
@@ -297,7 +370,8 @@ impl RepoManager {
.map(String::from);
license = parse_license_text(&metadata);
if let Some(provides_arr) = metadata.get("provides").and_then(|v| v.as_array()) {
if let Some(provides_arr) = metadata.get("provides").and_then(|v| v.as_array())
{
provides = provides_arr
.iter()
.filter_map(|v| v.as_str())
@@ -337,6 +411,8 @@ impl RepoManager {
archive_files.push(normalized);
}
}
}
let (sha256, sha512) = hashing_reader.finalize_hex();
if name.is_empty() {
// Fallback for packages WITHOUT metadata (e.g. legacy or during transition)
@@ -439,26 +515,6 @@ impl RepoManager {
Ok(())
}
fn calculate_hashes(&self, path: &Path) -> Result<(String, String)> {
use sha2::{Digest, Sha256, Sha512};
let mut file = fs::File::open(path)?;
let mut sha256 = Sha256::new();
let mut sha512 = Sha512::new();
let mut buf = [0u8; 64 * 1024];
loop {
let n = file.read(&mut buf)?;
if n == 0 {
break;
}
sha256.update(&buf[..n]);
sha512.update(&buf[..n]);
}
Ok((
format!("{:x}", sha256.finalize()),
format!("{:x}", sha512.finalize()),
))
}
fn compress_db(&self, source: &Path, dest: &Path) -> Result<()> {
let mut input = fs::File::open(source)?;
let output = fs::File::create(dest)?;