diff options
Diffstat (limited to 'tvix/store/src/pathinfoservice/sled.rs')
| -rw-r--r-- | tvix/store/src/pathinfoservice/sled.rs | 190 |
1 files changed, 0 insertions, 190 deletions
diff --git a/tvix/store/src/pathinfoservice/sled.rs b/tvix/store/src/pathinfoservice/sled.rs deleted file mode 100644 index 837eb9d079e1..000000000000 --- a/tvix/store/src/pathinfoservice/sled.rs +++ /dev/null @@ -1,190 +0,0 @@ -use super::PathInfoService; -use crate::proto::PathInfo; -use async_stream::try_stream; -use futures::stream::BoxStream; -use nix_compat::nixbase32; -use prost::Message; -use std::path::Path; -use std::sync::Arc; -use tonic::async_trait; -use tracing::{instrument, warn}; -use tvix_castore::composition::{CompositionContext, ServiceBuilder}; -use tvix_castore::Error; - -/// SledPathInfoService stores PathInfo in a [sled](https://github.com/spacejam/sled). -/// -/// The PathInfo messages are stored as encoded protos, and keyed by their output hash, -/// as that's currently the only request type available. -pub struct SledPathInfoService { - db: sled::Db, -} - -impl SledPathInfoService { - pub fn new<P: AsRef<Path>>(p: P) -> Result<Self, sled::Error> { - if p.as_ref() == Path::new("/") { - return Err(sled::Error::Unsupported( - "cowardly refusing to open / with sled".to_string(), - )); - } - - let config = sled::Config::default() - .use_compression(false) // is a required parameter - .path(p); - let db = config.open()?; - - Ok(Self { db }) - } - - pub fn new_temporary() -> Result<Self, sled::Error> { - let config = sled::Config::default().temporary(true); - let db = config.open()?; - - Ok(Self { db }) - } -} - -#[async_trait] -impl PathInfoService for SledPathInfoService { - #[instrument(level = "trace", skip_all, fields(path_info.digest = nixbase32::encode(&digest)))] - async fn get(&self, digest: [u8; 20]) -> Result<Option<PathInfo>, Error> { - let resp = tokio::task::spawn_blocking({ - let db = self.db.clone(); - move || db.get(digest.as_slice()) - }) - .await? - .map_err(|e| { - warn!("failed to retrieve PathInfo: {}", e); - Error::StorageError(format!("failed to retrieve PathInfo: {}", e)) - })?; - match resp { - None => Ok(None), - Some(data) => { - let path_info = PathInfo::decode(&*data).map_err(|e| { - warn!("failed to decode stored PathInfo: {}", e); - Error::StorageError(format!("failed to decode stored PathInfo: {}", e)) - })?; - Ok(Some(path_info)) - } - } - } - - #[instrument(level = "trace", skip_all, fields(path_info.root_node = ?path_info.node))] - async fn put(&self, path_info: PathInfo) -> Result<PathInfo, Error> { - // Call validate on the received PathInfo message. - let store_path = path_info - .validate() - .map_err(|e| Error::InvalidRequest(format!("failed to validate PathInfo: {}", e)))?; - - // In case the PathInfo is valid, we were able to parse a StorePath. - // Store it in the database, keyed by its digest. - // This overwrites existing PathInfo objects. - tokio::task::spawn_blocking({ - let db = self.db.clone(); - let k = *store_path.digest(); - let data = path_info.encode_to_vec(); - move || db.insert(k, data) - }) - .await? - .map_err(|e| { - warn!("failed to insert PathInfo: {}", e); - Error::StorageError(format! { - "failed to insert PathInfo: {}", e - }) - })?; - - Ok(path_info) - } - - fn list(&self) -> BoxStream<'static, Result<PathInfo, Error>> { - let db = self.db.clone(); - let mut it = db.iter().values(); - - Box::pin(try_stream! { - // Don't block the executor while waiting for .next(), so wrap that - // in a spawn_blocking call. - // We need to pass around it to be able to reuse it. - while let (Some(elem), new_it) = tokio::task::spawn_blocking(move || { - (it.next(), it) - }).await? { - it = new_it; - let data = elem.map_err(|e| { - warn!("failed to retrieve PathInfo: {}", e); - Error::StorageError(format!("failed to retrieve PathInfo: {}", e)) - })?; - - let path_info = PathInfo::decode(&*data).map_err(|e| { - warn!("failed to decode stored PathInfo: {}", e); - Error::StorageError(format!("failed to decode stored PathInfo: {}", e)) - })?; - - yield path_info - } - }) - } -} - -#[derive(serde::Deserialize)] -#[serde(deny_unknown_fields)] -pub struct SledPathInfoServiceConfig { - is_temporary: bool, - #[serde(default)] - /// required when is_temporary = false - path: Option<String>, -} - -impl TryFrom<url::Url> for SledPathInfoServiceConfig { - type Error = Box<dyn std::error::Error + Send + Sync>; - fn try_from(url: url::Url) -> Result<Self, Self::Error> { - // sled doesn't support host, and a path can be provided (otherwise - // it'll live in memory only). - if url.has_host() { - return Err(Error::StorageError("no host allowed".to_string()).into()); - } - - // TODO: expose compression and other parameters as URL parameters? - - Ok(if url.path().is_empty() { - SledPathInfoServiceConfig { - is_temporary: true, - path: None, - } - } else { - SledPathInfoServiceConfig { - is_temporary: false, - path: Some(url.path().to_string()), - } - }) - } -} - -#[async_trait] -impl ServiceBuilder for SledPathInfoServiceConfig { - type Output = dyn PathInfoService; - async fn build<'a>( - &'a self, - _instance_name: &str, - _context: &CompositionContext, - ) -> Result<Arc<dyn PathInfoService>, Box<dyn std::error::Error + Send + Sync + 'static>> { - match self { - SledPathInfoServiceConfig { - is_temporary: true, - path: None, - } => Ok(Arc::new(SledPathInfoService::new_temporary()?)), - SledPathInfoServiceConfig { - is_temporary: true, - path: Some(_), - } => Err( - Error::StorageError("Temporary SledPathInfoService can not have path".into()) - .into(), - ), - SledPathInfoServiceConfig { - is_temporary: false, - path: None, - } => Err(Error::StorageError("SledPathInfoService is missing path".into()).into()), - SledPathInfoServiceConfig { - is_temporary: false, - path: Some(path), - } => Ok(Arc::new(SledPathInfoService::new(path)?)), - } - } -} |