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-rw-r--r--tvix/store/src/bin/tvix-store.rs20
-rw-r--r--tvix/store/src/nar/mod.rs2
-rw-r--r--tvix/store/src/nar/renderer.rs4
-rw-r--r--tvix/store/src/pathinfoservice/grpc.rs32
-rw-r--r--tvix/store/src/pathinfoservice/memory.rs32
-rw-r--r--tvix/store/src/pathinfoservice/mod.rs5
-rw-r--r--tvix/store/src/pathinfoservice/sled.rs47
-rw-r--r--tvix/store/src/proto/grpc_pathinfoservice_wrapper.rs36
-rw-r--r--tvix/store/src/proto/tests/grpc_pathinfoservice.rs12
-rw-r--r--tvix/store/src/tests/nar_renderer.rs14
-rw-r--r--tvix/store/src/tests/utils.rs7
11 files changed, 145 insertions, 66 deletions
diff --git a/tvix/store/src/bin/tvix-store.rs b/tvix/store/src/bin/tvix-store.rs
index 49c8c9ec34eb..97e2447ec82a 100644
--- a/tvix/store/src/bin/tvix-store.rs
+++ b/tvix/store/src/bin/tvix-store.rs
@@ -101,9 +101,13 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
             // initialize stores
             let blob_service = SledBlobService::new("blobs.sled".into())?;
             let boxed_blob_service: Box<dyn BlobService> = Box::new(blob_service.clone());
-            let boxed_blob_service2: Box<dyn BlobService> = Box::new(blob_service);
+            let boxed_blob_service2: Box<dyn BlobService> = Box::new(blob_service.clone());
             let directory_service = SledDirectoryService::new("directories.sled".into())?;
-            let path_info_service = SledPathInfoService::new("pathinfo.sled".into())?;
+            let path_info_service = SledPathInfoService::new(
+                "pathinfo.sled".into(),
+                boxed_blob_service,
+                directory_service.clone(),
+            )?;
 
             let listen_address = listen_address
                 .unwrap_or_else(|| "[::]:8000".to_string())
@@ -115,16 +119,14 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
             #[allow(unused_mut)]
             let mut router = server
                 .add_service(BlobServiceServer::new(GRPCBlobServiceWrapper::from(
-                    boxed_blob_service,
+                    boxed_blob_service2,
                 )))
                 .add_service(DirectoryServiceServer::new(
-                    GRPCDirectoryServiceWrapper::from(directory_service.clone()),
+                    GRPCDirectoryServiceWrapper::from(directory_service),
                 ))
-                .add_service(PathInfoServiceServer::new(GRPCPathInfoServiceWrapper::new(
-                    path_info_service,
-                    boxed_blob_service2,
-                    directory_service,
-                )));
+                .add_service(PathInfoServiceServer::new(
+                    GRPCPathInfoServiceWrapper::from(path_info_service),
+                ));
 
             #[cfg(feature = "reflection")]
             {
diff --git a/tvix/store/src/nar/mod.rs b/tvix/store/src/nar/mod.rs
index c73e610f4ecb..13e4f7bd93f6 100644
--- a/tvix/store/src/nar/mod.rs
+++ b/tvix/store/src/nar/mod.rs
@@ -4,7 +4,7 @@ use thiserror::Error;
 
 mod renderer;
 pub use renderer::calculate_size_and_sha256;
-pub use renderer::writer_nar;
+pub use renderer::write_nar;
 
 /// Errors that can encounter while rendering NARs.
 #[derive(Debug, Error)]
diff --git a/tvix/store/src/nar/renderer.rs b/tvix/store/src/nar/renderer.rs
index 6ea76e1429be..80bf9bc6d816 100644
--- a/tvix/store/src/nar/renderer.rs
+++ b/tvix/store/src/nar/renderer.rs
@@ -21,7 +21,7 @@ pub fn calculate_size_and_sha256<DS: DirectoryService + Clone>(
     let h = Sha256::new();
     let mut cw = CountWrite::from(h);
 
-    writer_nar(&mut cw, root_node, blob_service, directory_service)?;
+    write_nar(&mut cw, root_node, blob_service, directory_service)?;
 
     Ok((cw.count(), cw.into_inner().finalize().into()))
 }
@@ -30,7 +30,7 @@ pub fn calculate_size_and_sha256<DS: DirectoryService + Clone>(
 /// and uses the passed blob_service and directory_service to
 /// perform the necessary lookups as it traverses the structure.
 /// The contents in NAR serialization are writen to the passed [std::io::Write].
-pub fn writer_nar<W: std::io::Write, DS: DirectoryService + Clone>(
+pub fn write_nar<W: std::io::Write, DS: DirectoryService + Clone>(
     w: &mut W,
     proto_root_node: &proto::node::Node,
     blob_service: &Box<dyn BlobService>,
diff --git a/tvix/store/src/pathinfoservice/grpc.rs b/tvix/store/src/pathinfoservice/grpc.rs
index 6bb774c668a3..871c3b592256 100644
--- a/tvix/store/src/pathinfoservice/grpc.rs
+++ b/tvix/store/src/pathinfoservice/grpc.rs
@@ -78,4 +78,36 @@ impl PathInfoService for GRPCPathInfoService {
             .block_on(task)?
             .map_err(|e| crate::Error::StorageError(e.to_string()))
     }
+
+    fn calculate_nar(
+        &self,
+        root_node: &proto::node::Node,
+    ) -> Result<(u64, [u8; 32]), crate::Error> {
+        // Get a new handle to the gRPC client.
+        let mut grpc_client = self.grpc_client.clone();
+        let root_node = root_node.clone();
+
+        let task: tokio::task::JoinHandle<Result<_, Status>> =
+            self.tokio_handle.spawn(async move {
+                let path_info = grpc_client
+                    .calculate_nar(proto::Node {
+                        node: Some(root_node),
+                    })
+                    .await?
+                    .into_inner();
+                Ok(path_info)
+            });
+
+        let resp = self
+            .tokio_handle
+            .block_on(task)?
+            .map_err(|e| crate::Error::StorageError(e.to_string()))?;
+
+        let nar_sha256: [u8; 32] = resp
+            .nar_sha256
+            .try_into()
+            .map_err(|_e| crate::Error::StorageError("invalid digest length".to_string()))?;
+
+        Ok((resp.nar_size, nar_sha256))
+    }
 }
diff --git a/tvix/store/src/pathinfoservice/memory.rs b/tvix/store/src/pathinfoservice/memory.rs
index d0ff1976efab..5b48ed9efa34 100644
--- a/tvix/store/src/pathinfoservice/memory.rs
+++ b/tvix/store/src/pathinfoservice/memory.rs
@@ -1,16 +1,31 @@
 use super::PathInfoService;
-use crate::{proto, Error};
+use crate::{
+    blobservice::BlobService, directoryservice::DirectoryService, nar::calculate_size_and_sha256,
+    proto, Error,
+};
 use std::{
     collections::HashMap,
     sync::{Arc, RwLock},
 };
 
-#[derive(Default)]
-pub struct MemoryPathInfoService {
+pub struct MemoryPathInfoService<DS: DirectoryService> {
     db: Arc<RwLock<HashMap<[u8; 20], proto::PathInfo>>>,
+
+    blob_service: Box<dyn BlobService>,
+    directory_service: DS,
+}
+
+impl<DS: DirectoryService> MemoryPathInfoService<DS> {
+    pub fn new(blob_service: Box<dyn BlobService>, directory_service: DS) -> Self {
+        Self {
+            db: Default::default(),
+            blob_service,
+            directory_service,
+        }
+    }
 }
 
-impl PathInfoService for MemoryPathInfoService {
+impl<DS: DirectoryService + Clone> PathInfoService for MemoryPathInfoService<DS> {
     fn get(&self, digest: [u8; 20]) -> Result<Option<proto::PathInfo>, Error> {
         let db = self.db.read().unwrap();
 
@@ -38,4 +53,13 @@ impl PathInfoService for MemoryPathInfoService {
             }
         }
     }
+
+    fn calculate_nar(&self, root_node: &proto::node::Node) -> Result<(u64, [u8; 32]), Error> {
+        calculate_size_and_sha256(
+            root_node,
+            &self.blob_service,
+            self.directory_service.clone(),
+        )
+        .map_err(|e| Error::StorageError(e.to_string()))
+    }
 }
diff --git a/tvix/store/src/pathinfoservice/mod.rs b/tvix/store/src/pathinfoservice/mod.rs
index ddede5851575..2483909a1190 100644
--- a/tvix/store/src/pathinfoservice/mod.rs
+++ b/tvix/store/src/pathinfoservice/mod.rs
@@ -18,5 +18,8 @@ pub trait PathInfoService {
     /// invalid messages.
     fn put(&self, path_info: proto::PathInfo) -> Result<proto::PathInfo, Error>;
 
-    // TODO: add default impl for nar calculation here, and override from GRPC client!
+    /// Return the nar size and nar sha256 digest for a given root node.
+    /// This can be used to calculate NAR-based output paths,
+    /// and implementations are encouraged to cache it.
+    fn calculate_nar(&self, root_node: &proto::node::Node) -> Result<(u64, [u8; 32]), Error>;
 }
diff --git a/tvix/store/src/pathinfoservice/sled.rs b/tvix/store/src/pathinfoservice/sled.rs
index 8776ebcbc106..98ea60ff4440 100644
--- a/tvix/store/src/pathinfoservice/sled.rs
+++ b/tvix/store/src/pathinfoservice/sled.rs
@@ -1,5 +1,8 @@
 use super::PathInfoService;
-use crate::{proto, Error};
+use crate::{
+    blobservice::BlobService, directoryservice::DirectoryService, nar::calculate_size_and_sha256,
+    proto, Error,
+};
 use prost::Message;
 use std::path::PathBuf;
 use tracing::warn;
@@ -8,28 +11,45 @@ use tracing::warn;
 ///
 /// The PathInfo messages are stored as encoded protos, and keyed by their output hash,
 /// as that's currently the only request type available.
-#[derive(Clone)]
-pub struct SledPathInfoService {
+pub struct SledPathInfoService<DS: DirectoryService> {
     db: sled::Db,
+
+    blob_service: Box<dyn BlobService>,
+    directory_service: DS,
 }
 
-impl SledPathInfoService {
-    pub fn new(p: PathBuf) -> Result<Self, sled::Error> {
+impl<DS: DirectoryService> SledPathInfoService<DS> {
+    pub fn new(
+        p: PathBuf,
+        blob_service: Box<dyn BlobService>,
+        directory_service: DS,
+    ) -> Result<Self, sled::Error> {
         let config = sled::Config::default().use_compression(true).path(p);
         let db = config.open()?;
 
-        Ok(Self { db })
+        Ok(Self {
+            db,
+            blob_service,
+            directory_service,
+        })
     }
 
-    pub fn new_temporary() -> Result<Self, sled::Error> {
+    pub fn new_temporary(
+        blob_service: Box<dyn BlobService>,
+        directory_service: DS,
+    ) -> Result<Self, sled::Error> {
         let config = sled::Config::default().temporary(true);
         let db = config.open()?;
 
-        Ok(Self { db })
+        Ok(Self {
+            db,
+            blob_service,
+            directory_service,
+        })
     }
 }
 
-impl PathInfoService for SledPathInfoService {
+impl<DS: DirectoryService + Clone> PathInfoService for SledPathInfoService<DS> {
     fn get(&self, digest: [u8; 20]) -> Result<Option<proto::PathInfo>, Error> {
         match self.db.get(digest) {
             Ok(None) => Ok(None),
@@ -73,4 +93,13 @@ impl PathInfoService for SledPathInfoService {
             },
         }
     }
+
+    fn calculate_nar(&self, root_node: &proto::node::Node) -> Result<(u64, [u8; 32]), Error> {
+        calculate_size_and_sha256(
+            root_node,
+            &self.blob_service,
+            self.directory_service.clone(),
+        )
+        .map_err(|e| Error::StorageError(e.to_string()))
+    }
 }
diff --git a/tvix/store/src/proto/grpc_pathinfoservice_wrapper.rs b/tvix/store/src/proto/grpc_pathinfoservice_wrapper.rs
index c070b883fa16..645f4aa60556 100644
--- a/tvix/store/src/proto/grpc_pathinfoservice_wrapper.rs
+++ b/tvix/store/src/proto/grpc_pathinfoservice_wrapper.rs
@@ -1,36 +1,24 @@
-use crate::blobservice::BlobService;
-use crate::directoryservice::DirectoryService;
-use crate::nar::{calculate_size_and_sha256, RenderError};
+use crate::nar::RenderError;
 use crate::pathinfoservice::PathInfoService;
 use crate::proto;
 use tonic::{async_trait, Request, Response, Result, Status};
 use tracing::{instrument, warn};
 
-pub struct GRPCPathInfoServiceWrapper<PS: PathInfoService, DS: DirectoryService> {
+pub struct GRPCPathInfoServiceWrapper<PS: PathInfoService> {
     path_info_service: PS,
-    blob_service: Box<dyn BlobService>,
-    directory_service: DS,
 }
 
-impl<PS: PathInfoService, DS: DirectoryService> GRPCPathInfoServiceWrapper<PS, DS> {
-    pub fn new(
-        path_info_service: PS,
-        blob_service: Box<dyn BlobService>,
-        directory_service: DS,
-    ) -> Self {
+impl<PS: PathInfoService> From<PS> for GRPCPathInfoServiceWrapper<PS> {
+    fn from(value: PS) -> Self {
         Self {
-            path_info_service,
-            blob_service,
-            directory_service,
+            path_info_service: value,
         }
     }
 }
 
 #[async_trait]
-impl<
-        PS: PathInfoService + Send + Sync + 'static,
-        DS: DirectoryService + Send + Sync + Clone + 'static,
-    > proto::path_info_service_server::PathInfoService for GRPCPathInfoServiceWrapper<PS, DS>
+impl<PS: PathInfoService + Send + Sync + 'static> proto::path_info_service_server::PathInfoService
+    for GRPCPathInfoServiceWrapper<PS>
 {
     #[instrument(skip(self))]
     async fn get(
@@ -78,12 +66,10 @@ impl<
         match request.into_inner().node {
             None => Err(Status::invalid_argument("no root node sent")),
             Some(root_node) => {
-                let (nar_size, nar_sha256) = calculate_size_and_sha256(
-                    &root_node,
-                    &self.blob_service,
-                    self.directory_service.clone(),
-                )
-                .expect("error during nar calculation"); // TODO: handle error
+                let (nar_size, nar_sha256) = self
+                    .path_info_service
+                    .calculate_nar(&root_node)
+                    .expect("error during nar calculation"); // TODO: handle error
 
                 Ok(Response::new(proto::CalculateNarResponse {
                     nar_size,
diff --git a/tvix/store/src/proto/tests/grpc_pathinfoservice.rs b/tvix/store/src/proto/tests/grpc_pathinfoservice.rs
index dbcdc5ced056..8b7038ccbc35 100644
--- a/tvix/store/src/proto/tests/grpc_pathinfoservice.rs
+++ b/tvix/store/src/proto/tests/grpc_pathinfoservice.rs
@@ -5,7 +5,9 @@ use crate::proto::GRPCPathInfoServiceWrapper;
 use crate::proto::PathInfo;
 use crate::proto::{GetPathInfoRequest, Node, SymlinkNode};
 use crate::tests::fixtures::DUMMY_OUTPUT_HASH;
-use crate::tests::utils::{gen_blob_service, gen_directory_service, gen_pathinfo_service};
+use crate::tests::utils::gen_blob_service;
+use crate::tests::utils::gen_directory_service;
+use crate::tests::utils::gen_pathinfo_service;
 use tonic::Request;
 
 /// generates a GRPCPathInfoService out of blob, directory and pathinfo services.
@@ -14,11 +16,9 @@ use tonic::Request;
 /// It uses the NonCachingNARCalculationService NARCalculationService to
 /// calculate NARs.
 fn gen_grpc_service() -> impl GRPCPathInfoService {
-    GRPCPathInfoServiceWrapper::new(
-        gen_pathinfo_service(),
-        gen_blob_service(),
-        gen_directory_service(),
-    )
+    let blob_service = gen_blob_service();
+    let directory_service = gen_directory_service();
+    GRPCPathInfoServiceWrapper::from(gen_pathinfo_service(blob_service, directory_service))
 }
 
 /// Trying to get a non-existent PathInfo should return a not found error.
diff --git a/tvix/store/src/tests/nar_renderer.rs b/tvix/store/src/tests/nar_renderer.rs
index 48c07e53c93e..20cca1e77848 100644
--- a/tvix/store/src/tests/nar_renderer.rs
+++ b/tvix/store/src/tests/nar_renderer.rs
@@ -1,6 +1,6 @@
 use crate::directoryservice::DirectoryService;
 use crate::nar::calculate_size_and_sha256;
-use crate::nar::writer_nar;
+use crate::nar::write_nar;
 use crate::proto::DirectoryNode;
 use crate::proto::FileNode;
 use crate::proto::SymlinkNode;
@@ -13,7 +13,7 @@ use std::io;
 fn single_symlink() {
     let mut buf: Vec<u8> = vec![];
 
-    writer_nar(
+    write_nar(
         &mut buf,
         &crate::proto::node::Node::Symlink(SymlinkNode {
             name: "doesntmatter".to_string(),
@@ -33,7 +33,7 @@ fn single_symlink() {
 fn single_file_missing_blob() {
     let mut buf: Vec<u8> = vec![];
 
-    let e = writer_nar(
+    let e = write_nar(
         &mut buf,
         &crate::proto::node::Node::File(FileNode {
             name: "doesntmatter".to_string(),
@@ -74,7 +74,7 @@ fn single_file_wrong_blob_size() {
     {
         let mut buf: Vec<u8> = vec![];
 
-        let e = writer_nar(
+        let e = write_nar(
             &mut buf,
             &crate::proto::node::Node::File(FileNode {
                 name: "doesntmatter".to_string(),
@@ -99,7 +99,7 @@ fn single_file_wrong_blob_size() {
     {
         let mut buf: Vec<u8> = vec![];
 
-        let e = writer_nar(
+        let e = write_nar(
             &mut buf,
             &crate::proto::node::Node::File(FileNode {
                 name: "doesntmatter".to_string(),
@@ -136,7 +136,7 @@ fn single_file() {
 
     let mut buf: Vec<u8> = vec![];
 
-    writer_nar(
+    write_nar(
         &mut buf,
         &crate::proto::node::Node::File(FileNode {
             name: "doesntmatter".to_string(),
@@ -174,7 +174,7 @@ fn test_complicated() {
 
     let mut buf: Vec<u8> = vec![];
 
-    writer_nar(
+    write_nar(
         &mut buf,
         &crate::proto::node::Node::Directory(DirectoryNode {
             name: "doesntmatter".to_string(),
diff --git a/tvix/store/src/tests/utils.rs b/tvix/store/src/tests/utils.rs
index ec379bddcf77..6905fe56b5d7 100644
--- a/tvix/store/src/tests/utils.rs
+++ b/tvix/store/src/tests/utils.rs
@@ -12,6 +12,9 @@ pub fn gen_directory_service() -> impl DirectoryService + Send + Sync + Clone +
     MemoryDirectoryService::default()
 }
 
-pub fn gen_pathinfo_service() -> impl PathInfoService {
-    MemoryPathInfoService::default()
+pub fn gen_pathinfo_service<DS: DirectoryService + Clone>(
+    blob_service: Box<dyn BlobService>,
+    directory_service: DS,
+) -> impl PathInfoService {
+    MemoryPathInfoService::new(blob_service, directory_service)
 }
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