8b77c7fcd7
Change-Id: Ie6290b296baba2b987f1a61c9bb4c78549ac11f1 Reviewed-on: https://cl.tvl.fyi/c/depot/+/11983 Reviewed-by: flokli <flokli@flokli.de> Autosubmit: yuka <yuka@yuka.dev> Tested-by: BuildkiteCI
89 lines
2.8 KiB
Rust
89 lines
2.8 KiB
Rust
use super::PathInfoService;
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use crate::proto::PathInfo;
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use async_stream::try_stream;
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use futures::stream::BoxStream;
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use nix_compat::nixbase32;
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use std::{collections::HashMap, sync::Arc};
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use tokio::sync::RwLock;
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use tonic::async_trait;
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use tracing::instrument;
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use tvix_castore::composition::{CompositionContext, ServiceBuilder};
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use tvix_castore::Error;
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#[derive(Default)]
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pub struct MemoryPathInfoService {
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db: Arc<RwLock<HashMap<[u8; 20], PathInfo>>>,
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}
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#[async_trait]
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impl PathInfoService for MemoryPathInfoService {
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#[instrument(level = "trace", skip_all, fields(path_info.digest = nixbase32::encode(&digest)))]
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async fn get(&self, digest: [u8; 20]) -> Result<Option<PathInfo>, Error> {
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let db = self.db.read().await;
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match db.get(&digest) {
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None => Ok(None),
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Some(path_info) => Ok(Some(path_info.clone())),
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}
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}
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#[instrument(level = "trace", skip_all, fields(path_info.root_node = ?path_info.node))]
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async fn put(&self, path_info: PathInfo) -> Result<PathInfo, Error> {
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// Call validate on the received PathInfo message.
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match path_info.validate() {
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Err(e) => Err(Error::InvalidRequest(format!(
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"failed to validate PathInfo: {}",
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e
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))),
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// In case the PathInfo is valid, and we were able to extract a NixPath, store it in the database.
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// This overwrites existing PathInfo objects.
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Ok(nix_path) => {
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let mut db = self.db.write().await;
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db.insert(*nix_path.digest(), path_info.clone());
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Ok(path_info)
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}
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}
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}
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fn list(&self) -> BoxStream<'static, Result<PathInfo, Error>> {
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let db = self.db.clone();
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Box::pin(try_stream! {
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let db = db.read().await;
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let it = db.iter();
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for (_k, v) in it {
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yield v.clone()
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}
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})
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}
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}
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#[derive(serde::Deserialize, Debug)]
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#[serde(deny_unknown_fields)]
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pub struct MemoryPathInfoServiceConfig {}
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impl TryFrom<url::Url> for MemoryPathInfoServiceConfig {
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type Error = Box<dyn std::error::Error + Send + Sync>;
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fn try_from(url: url::Url) -> Result<Self, Self::Error> {
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// memory doesn't support host or path in the URL.
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if url.has_host() || !url.path().is_empty() {
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return Err(Error::StorageError("invalid url".to_string()).into());
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}
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Ok(MemoryPathInfoServiceConfig {})
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}
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}
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#[async_trait]
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impl ServiceBuilder for MemoryPathInfoServiceConfig {
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type Output = dyn PathInfoService;
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async fn build<'a>(
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&'a self,
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_instance_name: &str,
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_context: &CompositionContext,
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) -> Result<Arc<dyn PathInfoService>, Box<dyn std::error::Error + Send + Sync + 'static>> {
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Ok(Arc::new(MemoryPathInfoService::default()))
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}
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}
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