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use crate::nar::{NarCalculationService, RenderError};
use crate::pathinfoservice::PathInfoService;
use crate::proto;
use futures::{stream::BoxStream, TryStreamExt};
use std::ops::Deref;
use tonic::{async_trait, Request, Response, Result, Status};
use tracing::{instrument, warn};
use tvix_castore::proto as castorepb;
pub struct GRPCPathInfoServiceWrapper<PS, NS> {
path_info_service: PS,
// FUTUREWORK: allow exposing without allowing listing
nar_calculation_service: NS,
}
impl<PS, NS> GRPCPathInfoServiceWrapper<PS, NS> {
pub fn new(path_info_service: PS, nar_calculation_service: NS) -> Self {
Self {
path_info_service,
nar_calculation_service,
}
}
}
#[async_trait]
impl<PS, NS> proto::path_info_service_server::PathInfoService for GRPCPathInfoServiceWrapper<PS, NS>
where
PS: Deref<Target = dyn PathInfoService> + Send + Sync + 'static,
NS: NarCalculationService + Send + Sync + 'static,
{
type ListStream = BoxStream<'static, tonic::Result<proto::PathInfo, Status>>;
#[instrument(skip_all)]
async fn get(
&self,
request: Request<proto::GetPathInfoRequest>,
) -> Result<Response<proto::PathInfo>> {
match request.into_inner().by_what {
None => Err(Status::unimplemented("by_what needs to be specified")),
Some(proto::get_path_info_request::ByWhat::ByOutputHash(output_digest)) => {
let digest: [u8; 20] = output_digest
.to_vec()
.try_into()
.map_err(|_e| Status::invalid_argument("invalid output digest length"))?;
match self.path_info_service.get(digest).await {
Ok(None) => Err(Status::not_found("PathInfo not found")),
Ok(Some(path_info)) => Ok(Response::new(path_info)),
Err(e) => {
warn!(err = %e, "failed to get PathInfo");
Err(e.into())
}
}
}
}
}
#[instrument(skip_all)]
async fn put(&self, request: Request<proto::PathInfo>) -> Result<Response<proto::PathInfo>> {
let path_info = request.into_inner();
// Store the PathInfo in the client. Clients MUST validate the data
// they receive, so we don't validate additionally here.
match self.path_info_service.put(path_info).await {
Ok(path_info_new) => Ok(Response::new(path_info_new)),
Err(e) => {
warn!(err = %e, "failed to put PathInfo");
Err(e.into())
}
}
}
#[instrument(skip_all)]
async fn calculate_nar(
&self,
request: Request<castorepb::Node>,
) -> Result<Response<proto::CalculateNarResponse>> {
match request.into_inner().node {
None => Err(Status::invalid_argument("no root node sent")),
Some(root_node) => {
if let Err(e) = root_node.validate() {
warn!(err = %e, "invalid root node");
Err(Status::invalid_argument("invalid root node"))?
}
match self.nar_calculation_service.calculate_nar(&root_node).await {
Ok((nar_size, nar_sha256)) => Ok(Response::new(proto::CalculateNarResponse {
nar_size,
nar_sha256: nar_sha256.to_vec().into(),
})),
Err(e) => {
warn!(err = %e, "error during NAR calculation");
Err(e.into())
}
}
}
}
}
#[instrument(skip_all, err)]
async fn list(
&self,
_request: Request<proto::ListPathInfoRequest>,
) -> Result<Response<Self::ListStream>, Status> {
let stream = Box::pin(
self.path_info_service
.list()
.map_err(|e| Status::internal(e.to_string())),
);
Ok(Response::new(Box::pin(stream)))
}
}
impl From<RenderError> for tonic::Status {
fn from(value: RenderError) -> Self {
match value {
RenderError::BlobNotFound(_, _) => Self::not_found(value.to_string()),
RenderError::DirectoryNotFound(_, _) => Self::not_found(value.to_string()),
RenderError::NARWriterError(_) => Self::internal(value.to_string()),
RenderError::StoreError(_) => Self::internal(value.to_string()),
RenderError::UnexpectedBlobMeta(_, _, _, _) => Self::internal(value.to_string()),
}
}
}
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