feat(tvix): add instance_name to instrumentation of *Services r/8896

Currently it is not possible to distinguish between tracing of the same
*Service type whenever there are multiple of them. Now the instance_name
of ServiceBuilder is passed into the *Service and used in the existing
instrument as the `instance_name` field.

Places that did not already have a instance_name in its context use
`"default"`. In tests I used `"test"`.

Change-Id: Ia20bf2a7bb849a781e370d087ba7ddb3be79f654
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12739
Tested-by: BuildkiteCI
Autosubmit: Bob van der Linden <bobvanderlinden@gmail.com>
Reviewed-by: flokli <flokli@flokli.de>

10 files changed, 123 insertions, 57 deletions

diff --git a/tvix/store/src/pathinfoservice/bigtable.rs b/tvix/store/src/pathinfoservice/bigtable.rs
index 3d8db8e5044a..ce6faa2d3743 100644
--- a/tvix/store/src/pathinfoservice/bigtable.rs
+++ b/tvix/store/src/pathinfoservice/bigtable.rs
@@ -35,6 +35,7 @@ const CELL_SIZE_LIMIT: u64 = 10 * 1024 * 1024;
 /// "unimplemented" error.
 #[derive(Clone)]
 pub struct BigtablePathInfoService {
+    instance_name: String,
     client: bigtable::BigTable,
     params: BigtableParameters,
 
@@ -47,7 +48,10 @@ pub struct BigtablePathInfoService {
 
 impl BigtablePathInfoService {
     #[cfg(not(test))]
-    pub async fn connect(params: BigtableParameters) -> Result<Self, bigtable::Error> {
+    pub async fn connect(
+        instance_name: String,
+        params: BigtableParameters,
+    ) -> Result<Self, bigtable::Error> {
         let connection = bigtable::BigTableConnection::new(
             &params.project_id,
             &params.instance_name,
@@ -58,13 +62,17 @@ impl BigtablePathInfoService {
         .await?;
 
         Ok(Self {
+            instance_name,
             client: connection.client(),
             params,
         })
     }
 
     #[cfg(test)]
-    pub async fn connect(params: BigtableParameters) -> Result<Self, bigtable::Error> {
+    pub async fn connect(
+        instance_name: String,
+        params: BigtableParameters,
+    ) -> Result<Self, bigtable::Error> {
         use std::time::Duration;
 
         use async_process::{Command, Stdio};
@@ -133,6 +141,7 @@ impl BigtablePathInfoService {
         )?;
 
         Ok(Self {
+            instance_name: instance_name.to_string(),
             client: connection.client(),
             params,
             emulator: (tmpdir, emulator_process).into(),
@@ -148,7 +157,7 @@ fn derive_pathinfo_key(digest: &[u8; 20]) -> String {
 
 #[async_trait]
 impl PathInfoService for BigtablePathInfoService {
-    #[instrument(level = "trace", skip_all, fields(path_info.digest = nixbase32::encode(&digest)))]
+    #[instrument(level = "trace", skip_all, fields(path_info.digest = nixbase32::encode(&digest), instance_name = %self.instance_name))]
     async fn get(&self, digest: [u8; 20]) -> Result<Option<PathInfo>, Error> {
         let mut client = self.client.clone();
         let path_info_key = derive_pathinfo_key(&digest);
@@ -244,7 +253,7 @@ impl PathInfoService for BigtablePathInfoService {
         Ok(Some(path_info))
     }
 
-    #[instrument(level = "trace", skip_all, fields(path_info.root_node = ?path_info.node))]
+    #[instrument(level = "trace", skip_all, fields(path_info.root_node = ?path_info.node, instance_name = %self.instance_name))]
     async fn put(&self, path_info: PathInfo) -> Result<PathInfo, Error> {
         let mut client = self.client.clone();
         let path_info_key = derive_pathinfo_key(path_info.store_path.digest());
@@ -410,11 +419,11 @@ impl ServiceBuilder for BigtableParameters {
     type Output = dyn PathInfoService;
     async fn build<'a>(
         &'a self,
-        _instance_name: &str,
+        instance_name: &str,
         _context: &CompositionContext,
     ) -> Result<Arc<dyn PathInfoService>, Box<dyn std::error::Error + Send + Sync>> {
         Ok(Arc::new(
-            BigtablePathInfoService::connect(self.clone()).await?,
+            BigtablePathInfoService::connect(instance_name.to_string(), self.clone()).await?,
         ))
     }
 }
diff --git a/tvix/store/src/pathinfoservice/combinators.rs b/tvix/store/src/pathinfoservice/combinators.rs
index f386fd52dc3c..df0046875057 100644
--- a/tvix/store/src/pathinfoservice/combinators.rs
+++ b/tvix/store/src/pathinfoservice/combinators.rs
@@ -15,13 +15,18 @@ use super::{PathInfo, PathInfoService};
 /// There is no negative cache.
 /// Inserts and listings are not implemented for now.
 pub struct Cache<PS1, PS2> {
+    instance_name: String,
     near: PS1,
     far: PS2,
 }
 
 impl<PS1, PS2> Cache<PS1, PS2> {
-    pub fn new(near: PS1, far: PS2) -> Self {
-        Self { near, far }
+    pub fn new(instance_name: String, near: PS1, far: PS2) -> Self {
+        Self {
+            instance_name,
+            near,
+            far,
+        }
     }
 }
 
@@ -31,7 +36,7 @@ where
     PS1: PathInfoService,
     PS2: PathInfoService,
 {
-    #[instrument(level = "trace", skip_all, fields(path_info.digest = nixbase32::encode(&digest)))]
+    #[instrument(level = "trace", skip_all, fields(path_info.digest = nixbase32::encode(&digest), instance_name = %self.instance_name))]
     async fn get(&self, digest: [u8; 20]) -> Result<Option<PathInfo>, Error> {
         match self.near.get(digest).await? {
             Some(path_info) => {
@@ -84,7 +89,7 @@ impl ServiceBuilder for CacheConfig {
     type Output = dyn PathInfoService;
     async fn build<'a>(
         &'a self,
-        _instance_name: &str,
+        instance_name: &str,
         context: &CompositionContext,
     ) -> Result<Arc<dyn PathInfoService>, Box<dyn std::error::Error + Send + Sync + 'static>> {
         let (near, far) = futures::join!(
@@ -92,6 +97,7 @@ impl ServiceBuilder for CacheConfig {
             context.resolve::<Self::Output>(self.far.clone())
         );
         Ok(Arc::new(Cache {
+            instance_name: instance_name.to_string(),
             near: near?,
             far: far?,
         }))
@@ -114,10 +120,10 @@ mod test {
         let far = MemoryPathInfoService::default();
 
         // … and an instance of a "near" PathInfoService.
-        let near = LruPathInfoService::with_capacity(NonZeroUsize::new(1).unwrap());
+        let near = LruPathInfoService::with_capacity("test".into(), NonZeroUsize::new(1).unwrap());
 
         // create a Pathinfoservice combining the two and return it.
-        super::Cache::new(near, far)
+        super::Cache::new("test".into(), near, far)
     }
 
     /// Getting from the far backend is gonna insert it into the near one.
diff --git a/tvix/store/src/pathinfoservice/grpc.rs b/tvix/store/src/pathinfoservice/grpc.rs
index 453044cba13d..2e18f510253e 100644
--- a/tvix/store/src/pathinfoservice/grpc.rs
+++ b/tvix/store/src/pathinfoservice/grpc.rs
@@ -17,6 +17,8 @@ use tvix_castore::Node;
 /// Connects to a (remote) tvix-store PathInfoService over gRPC.
 #[derive(Clone)]
 pub struct GRPCPathInfoService<T> {
+    instance_name: String,
+
     /// The internal reference to a gRPC client.
     /// Cloning it is cheap, and it internally handles concurrent requests.
     grpc_client: proto::path_info_service_client::PathInfoServiceClient<T>,
@@ -26,9 +28,13 @@ impl<T> GRPCPathInfoService<T> {
     /// construct a [GRPCPathInfoService] from a [proto::path_info_service_client::PathInfoServiceClient].
     /// panics if called outside the context of a tokio runtime.
     pub fn from_client(
+        instance_name: String,
         grpc_client: proto::path_info_service_client::PathInfoServiceClient<T>,
     ) -> Self {
-        Self { grpc_client }
+        Self {
+            instance_name,
+            grpc_client,
+        }
     }
 }
 
@@ -40,7 +46,7 @@ where
     <T::ResponseBody as tonic::codegen::Body>::Error: Into<tonic::codegen::StdError> + Send,
     T::Future: Send,
 {
-    #[instrument(level = "trace", skip_all, fields(path_info.digest = nixbase32::encode(&digest)))]
+    #[instrument(level = "trace", skip_all, fields(path_info.digest = nixbase32::encode(&digest), instance_name = %self.instance_name))]
     async fn get(&self, digest: [u8; 20]) -> Result<Option<PathInfo>, Error> {
         let path_info = self
             .grpc_client
@@ -62,7 +68,7 @@ where
         }
     }
 
-    #[instrument(level = "trace", skip_all, fields(path_info.root_node = ?path_info.node))]
+    #[instrument(level = "trace", skip_all, fields(path_info.root_node = ?path_info.node, instance_name = %self.instance_name))]
     async fn put(&self, path_info: PathInfo) -> Result<PathInfo, Error> {
         let path_info = self
             .grpc_client
@@ -99,6 +105,7 @@ where
     #[instrument(level = "trace", skip_all)]
     fn nar_calculation_service(&self) -> Option<Box<dyn NarCalculationService>> {
         Some(Box::new(GRPCPathInfoService {
+            instance_name: self.instance_name.clone(),
             grpc_client: self.grpc_client.clone(),
         }) as Box<dyn NarCalculationService>)
     }
@@ -163,13 +170,16 @@ impl ServiceBuilder for GRPCPathInfoServiceConfig {
     type Output = dyn PathInfoService;
     async fn build<'a>(
         &'a self,
-        _instance_name: &str,
+        instance_name: &str,
         _context: &CompositionContext,
     ) -> Result<Arc<dyn PathInfoService>, Box<dyn std::error::Error + Send + Sync + 'static>> {
         let client = proto::path_info_service_client::PathInfoServiceClient::new(
             tvix_castore::tonic::channel_from_url(&self.url.parse()?).await?,
         );
-        Ok(Arc::new(GRPCPathInfoService::from_client(client)))
+        Ok(Arc::new(GRPCPathInfoService::from_client(
+            instance_name.to_string(),
+            client,
+        )))
     }
 }
 
diff --git a/tvix/store/src/pathinfoservice/lru.rs b/tvix/store/src/pathinfoservice/lru.rs
index 3055d73c22f9..0b55441860fe 100644
--- a/tvix/store/src/pathinfoservice/lru.rs
+++ b/tvix/store/src/pathinfoservice/lru.rs
@@ -14,12 +14,14 @@ use tvix_castore::Error;
 use super::{PathInfo, PathInfoService};
 
 pub struct LruPathInfoService {
+    instance_name: String,
     lru: Arc<RwLock<LruCache<[u8; 20], PathInfo>>>,
 }
 
 impl LruPathInfoService {
-    pub fn with_capacity(capacity: NonZeroUsize) -> Self {
+    pub fn with_capacity(instance_name: String, capacity: NonZeroUsize) -> Self {
         Self {
+            instance_name,
             lru: Arc::new(RwLock::new(LruCache::new(capacity))),
         }
     }
@@ -27,12 +29,12 @@ impl LruPathInfoService {
 
 #[async_trait]
 impl PathInfoService for LruPathInfoService {
-    #[instrument(level = "trace", skip_all, fields(path_info.digest = nixbase32::encode(&digest)))]
+    #[instrument(level = "trace", skip_all, fields(path_info.digest = nixbase32::encode(&digest), instance_name = %self.instance_name))]
     async fn get(&self, digest: [u8; 20]) -> Result<Option<PathInfo>, Error> {
         Ok(self.lru.write().await.get(&digest).cloned())
     }
 
-    #[instrument(level = "trace", skip_all, fields(path_info.root_node = ?path_info.node))]
+    #[instrument(level = "trace", skip_all, fields(path_info.root_node = ?path_info.node, instance_name = %self.instance_name))]
     async fn put(&self, path_info: PathInfo) -> Result<PathInfo, Error> {
         self.lru
             .write()
@@ -76,10 +78,13 @@ impl ServiceBuilder for LruPathInfoServiceConfig {
     type Output = dyn PathInfoService;
     async fn build<'a>(
         &'a self,
-        _instance_name: &str,
+        instance_name: &str,
         _context: &CompositionContext,
     ) -> Result<Arc<dyn PathInfoService>, Box<dyn std::error::Error + Send + Sync + 'static>> {
-        Ok(Arc::new(LruPathInfoService::with_capacity(self.capacity)))
+        Ok(Arc::new(LruPathInfoService::with_capacity(
+            instance_name.to_string(),
+            self.capacity,
+        )))
     }
 }
 
@@ -103,7 +108,7 @@ mod test {
 
     #[tokio::test]
     async fn evict() {
-        let svc = LruPathInfoService::with_capacity(NonZeroUsize::new(1).unwrap());
+        let svc = LruPathInfoService::with_capacity("test".into(), NonZeroUsize::new(1).unwrap());
 
         // pathinfo_1 should not be there
         assert!(svc
diff --git a/tvix/store/src/pathinfoservice/memory.rs b/tvix/store/src/pathinfoservice/memory.rs
index fd013fe9a573..88a8a379f175 100644
--- a/tvix/store/src/pathinfoservice/memory.rs
+++ b/tvix/store/src/pathinfoservice/memory.rs
@@ -11,12 +11,13 @@ use tvix_castore::Error;
 
 #[derive(Default)]
 pub struct MemoryPathInfoService {
+    instance_name: String,
     db: Arc<RwLock<HashMap<[u8; 20], PathInfo>>>,
 }
 
 #[async_trait]
 impl PathInfoService for MemoryPathInfoService {
-    #[instrument(level = "trace", skip_all, fields(path_info.digest = nixbase32::encode(&digest)))]
+    #[instrument(level = "trace", skip_all, fields(path_info.digest = nixbase32::encode(&digest), instance_name = %self.instance_name))]
     async fn get(&self, digest: [u8; 20]) -> Result<Option<PathInfo>, Error> {
         let db = self.db.read().await;
 
@@ -26,7 +27,7 @@ impl PathInfoService for MemoryPathInfoService {
         }
     }
 
-    #[instrument(level = "trace", skip_all, fields(path_info.root_node = ?path_info.node))]
+    #[instrument(level = "trace", skip_all, fields(path_info.root_node = ?path_info.node, instance_name = %self.instance_name))]
     async fn put(&self, path_info: PathInfo) -> Result<PathInfo, Error> {
         // This overwrites existing PathInfo objects with the same store path digest.
         let mut db = self.db.write().await;
@@ -69,9 +70,12 @@ impl ServiceBuilder for MemoryPathInfoServiceConfig {
     type Output = dyn PathInfoService;
     async fn build<'a>(
         &'a self,
-        _instance_name: &str,
+        instance_name: &str,
         _context: &CompositionContext,
     ) -> Result<Arc<dyn PathInfoService>, Box<dyn std::error::Error + Send + Sync + 'static>> {
-        Ok(Arc::new(MemoryPathInfoService::default()))
+        Ok(Arc::new(MemoryPathInfoService {
+            instance_name: instance_name.to_string(),
+            db: Default::default(),
+        }))
     }
 }
diff --git a/tvix/store/src/pathinfoservice/nix_http.rs b/tvix/store/src/pathinfoservice/nix_http.rs
index 29e04aa45867..6b8960b75c33 100644
--- a/tvix/store/src/pathinfoservice/nix_http.rs
+++ b/tvix/store/src/pathinfoservice/nix_http.rs
@@ -32,6 +32,7 @@ use url::Url;
 /// [PathInfoService::put] is not implemented and returns an error if called.
 /// TODO: what about reading from nix-cache-info?
 pub struct NixHTTPPathInfoService<BS, DS> {
+    instance_name: String,
     base_url: url::Url,
     http_client: reqwest_middleware::ClientWithMiddleware,
 
@@ -44,8 +45,14 @@ pub struct NixHTTPPathInfoService<BS, DS> {
 }
 
 impl<BS, DS> NixHTTPPathInfoService<BS, DS> {
-    pub fn new(base_url: url::Url, blob_service: BS, directory_service: DS) -> Self {
+    pub fn new(
+        instance_name: String,
+        base_url: url::Url,
+        blob_service: BS,
+        directory_service: DS,
+    ) -> Self {
         Self {
+            instance_name,
             base_url,
             http_client: reqwest_middleware::ClientBuilder::new(reqwest::Client::new())
                 .with(tvix_tracing::propagate::reqwest::tracing_middleware())
@@ -69,7 +76,7 @@ where
     BS: BlobService + Send + Sync + Clone + 'static,
     DS: DirectoryService + Send + Sync + Clone + 'static,
 {
-    #[instrument(skip_all, err, fields(path.digest=nixbase32::encode(&digest)))]
+    #[instrument(skip_all, err, fields(path.digest=nixbase32::encode(&digest), instance_name=%self.instance_name))]
     async fn get(&self, digest: [u8; 20]) -> Result<Option<PathInfo>, Error> {
         let narinfo_url = self
             .base_url
@@ -241,7 +248,7 @@ where
         }))
     }
 
-    #[instrument(skip_all, fields(path_info=?_path_info))]
+    #[instrument(skip_all, fields(path_info=?_path_info, instance_name=%self.instance_name))]
     async fn put(&self, _path_info: PathInfo) -> Result<PathInfo, Error> {
         Err(Error::InvalidRequest(
             "put not supported for this backend".to_string(),
@@ -314,7 +321,7 @@ impl ServiceBuilder for NixHTTPPathInfoServiceConfig {
     type Output = dyn PathInfoService;
     async fn build<'a>(
         &'a self,
-        _instance_name: &str,
+        instance_name: &str,
         context: &CompositionContext,
     ) -> Result<Arc<Self::Output>, Box<dyn std::error::Error + Send + Sync + 'static>> {
         let (blob_service, directory_service) = futures::join!(
@@ -322,6 +329,7 @@ impl ServiceBuilder for NixHTTPPathInfoServiceConfig {
             context.resolve::<dyn DirectoryService>(self.directory_service.clone())
         );
         let mut svc = NixHTTPPathInfoService::new(
+            instance_name.to_string(),
             Url::parse(&self.base_url)?,
             blob_service?,
             directory_service?,
diff --git a/tvix/store/src/pathinfoservice/redb.rs b/tvix/store/src/pathinfoservice/redb.rs
index 6e794e1981f0..8dc3083f3305 100644
--- a/tvix/store/src/pathinfoservice/redb.rs
+++ b/tvix/store/src/pathinfoservice/redb.rs
@@ -19,6 +19,7 @@ const PATHINFO_TABLE: TableDefinition<[u8; 20], Vec<u8>> = TableDefinition::new(
 /// redb stores all of its data in a single file with a K/V pointing from a path's output hash to
 /// its corresponding protobuf-encoded PathInfo.
 pub struct RedbPathInfoService {
+    instance_name: String,
     // We wrap db in an Arc to be able to move it into spawn_blocking,
     // as discussed in https://github.com/cberner/redb/issues/789
     db: Arc<Database>,
@@ -27,7 +28,7 @@ pub struct RedbPathInfoService {
 impl RedbPathInfoService {
     /// Constructs a new instance using the specified file system path for
     /// storage.
-    pub async fn new(path: PathBuf) -> Result<Self, Error> {
+    pub async fn new(instance_name: String, path: PathBuf) -> Result<Self, Error> {
         if path == PathBuf::from("/") {
             return Err(Error::StorageError(
                 "cowardly refusing to open / with redb".to_string(),
@@ -41,17 +42,23 @@ impl RedbPathInfoService {
         })
         .await??;
 
-        Ok(Self { db: Arc::new(db) })
+        Ok(Self {
+            instance_name,
+            db: Arc::new(db),
+        })
     }
 
     /// Constructs a new instance using the in-memory backend.
-    pub fn new_temporary() -> Result<Self, Error> {
+    pub fn new_temporary(instance_name: String) -> Result<Self, Error> {
         let db =
             redb::Database::builder().create_with_backend(redb::backends::InMemoryBackend::new())?;
 
         create_schema(&db)?;
 
-        Ok(Self { db: Arc::new(db) })
+        Ok(Self {
+            instance_name,
+            db: Arc::new(db),
+        })
     }
 }
 
@@ -68,7 +75,7 @@ fn create_schema(db: &redb::Database) -> Result<(), redb::Error> {
 
 #[async_trait]
 impl PathInfoService for RedbPathInfoService {
-    #[instrument(level = "trace", skip_all, fields(path_info.digest = BASE64.encode(&digest)))]
+    #[instrument(level = "trace", skip_all, fields(path_info.digest = BASE64.encode(&digest), instance_name = %self.instance_name))]
     async fn get(&self, digest: [u8; 20]) -> Result<Option<PathInfo>, Error> {
         let db = self.db.clone();
 
@@ -93,7 +100,7 @@ impl PathInfoService for RedbPathInfoService {
         .await?
     }
 
-    #[instrument(level = "trace", skip_all, fields(path_info.root_node = ?path_info.node))]
+    #[instrument(level = "trace", skip_all, fields(path_info.root_node = ?path_info.node, instance_name = %self.instance_name))]
     async fn put(&self, path_info: PathInfo) -> Result<PathInfo, Error> {
         let db = self.db.clone();
 
@@ -193,14 +200,16 @@ impl ServiceBuilder for RedbPathInfoServiceConfig {
     type Output = dyn PathInfoService;
     async fn build<'a>(
         &'a self,
-        _instance_name: &str,
+        instance_name: &str,
         _context: &CompositionContext,
     ) -> Result<Arc<dyn PathInfoService>, Box<dyn std::error::Error + Send + Sync + 'static>> {
         match self {
             RedbPathInfoServiceConfig {
                 is_temporary: true,
                 path: None,
-            } => Ok(Arc::new(RedbPathInfoService::new_temporary()?)),
+            } => Ok(Arc::new(RedbPathInfoService::new_temporary(
+                instance_name.to_string(),
+            )?)),
             RedbPathInfoServiceConfig {
                 is_temporary: true,
                 path: Some(_),
@@ -215,7 +224,9 @@ impl ServiceBuilder for RedbPathInfoServiceConfig {
             RedbPathInfoServiceConfig {
                 is_temporary: false,
                 path: Some(path),
-            } => Ok(Arc::new(RedbPathInfoService::new(path.to_owned()).await?)),
+            } => Ok(Arc::new(
+                RedbPathInfoService::new(instance_name.to_string(), path.to_owned()).await?,
+            )),
         }
     }
 }
diff --git a/tvix/store/src/pathinfoservice/signing_wrapper.rs b/tvix/store/src/pathinfoservice/signing_wrapper.rs
index 525e60e416a8..f4ac44b5edd0 100644
--- a/tvix/store/src/pathinfoservice/signing_wrapper.rs
+++ b/tvix/store/src/pathinfoservice/signing_wrapper.rs
@@ -27,6 +27,7 @@ use super::MemoryPathInfoService;
 ///
 /// The service signs the [PathInfo] **only if it has a narinfo attribute**
 pub struct SigningPathInfoService<T, S> {
+    instance_name: String,
     /// The inner [PathInfoService]
     inner: T,
     /// The key to sign narinfos
@@ -34,8 +35,12 @@ pub struct SigningPathInfoService<T, S> {
 }
 
 impl<T, S> SigningPathInfoService<T, S> {
-    pub fn new(inner: T, signing_key: Arc<SigningKey<S>>) -> Self {
-        Self { inner, signing_key }
+    pub fn new(instance_name: String, inner: T, signing_key: Arc<SigningKey<S>>) -> Self {
+        Self {
+            instance_name,
+            inner,
+            signing_key,
+        }
     }
 }
 
@@ -45,7 +50,7 @@ where
     T: PathInfoService,
     S: ed25519::signature::Signer<ed25519::Signature> + Sync + Send,
 {
-    #[instrument(level = "trace", skip_all, fields(path_info.digest = nixbase32::encode(&digest)))]
+    #[instrument(level = "trace", skip_all, fields(path_info.digest = nixbase32::encode(&digest), instance_name = %self.instance_name))]
     async fn get(&self, digest: [u8; 20]) -> Result<Option<PathInfo>, Error> {
         self.inner.get(digest).await
     }
@@ -101,7 +106,7 @@ impl ServiceBuilder for KeyFileSigningPathInfoServiceConfig {
     type Output = dyn PathInfoService;
     async fn build<'a>(
         &'a self,
-        _instance_name: &str,
+        instance_name: &str,
         context: &CompositionContext,
     ) -> Result<Arc<dyn PathInfoService>, Box<dyn std::error::Error + Send + Sync + 'static>> {
         let inner = context.resolve::<Self::Output>(self.inner.clone()).await?;
@@ -110,7 +115,11 @@ impl ServiceBuilder for KeyFileSigningPathInfoServiceConfig {
                 .map_err(|e| Error::StorageError(e.to_string()))?
                 .0,
         );
-        Ok(Arc::new(SigningPathInfoService { inner, signing_key }))
+        Ok(Arc::new(SigningPathInfoService {
+            instance_name: instance_name.to_string(),
+            inner,
+            signing_key,
+        }))
     }
 }
 
@@ -118,6 +127,7 @@ impl ServiceBuilder for KeyFileSigningPathInfoServiceConfig {
 pub(crate) fn test_signing_service() -> Arc<dyn PathInfoService> {
     let memory_svc: Arc<dyn PathInfoService> = Arc::new(MemoryPathInfoService::default());
     Arc::new(SigningPathInfoService {
+        instance_name: "test".into(),
         inner: memory_svc,
         signing_key: Arc::new(
             parse_keypair(DUMMY_KEYPAIR)
diff --git a/tvix/store/src/pathinfoservice/tests/mod.rs b/tvix/store/src/pathinfoservice/tests/mod.rs
index 12c685c80fad..f56e1015ea26 100644
--- a/tvix/store/src/pathinfoservice/tests/mod.rs
+++ b/tvix/store/src/pathinfoservice/tests/mod.rs
@@ -26,7 +26,7 @@ use self::utils::make_bigtable_path_info_service;
     let (_, _, svc) = make_grpc_path_info_service_client().await;
     svc
 })]
-#[case::redb(RedbPathInfoService::new_temporary().unwrap())]
+#[case::redb(RedbPathInfoService::new_temporary("test".into()).unwrap())]
 #[case::signing(test_signing_service())]
 #[cfg_attr(all(feature = "cloud",feature="integration"), case::bigtable(make_bigtable_path_info_service().await))]
 pub fn path_info_services(#[case] svc: impl PathInfoService) {}
diff --git a/tvix/store/src/pathinfoservice/tests/utils.rs b/tvix/store/src/pathinfoservice/tests/utils.rs
index 8b192e303b89..3b0684841d49 100644
--- a/tvix/store/src/pathinfoservice/tests/utils.rs
+++ b/tvix/store/src/pathinfoservice/tests/utils.rs
@@ -53,16 +53,19 @@ pub async fn make_grpc_path_info_service_client() -> (
     // Create a client, connecting to the right side. The URI is unused.
     let mut maybe_right = Some(right);
 
-    let path_info_service = GRPCPathInfoService::from_client(PathInfoServiceClient::new(
-        Endpoint::try_from("http://[::]:50051")
-            .unwrap()
-            .connect_with_connector(tower::service_fn(move |_: Uri| {
-                let right = maybe_right.take().unwrap();
-                async move { Ok::<_, std::io::Error>(TokioIo::new(right)) }
-            }))
-            .await
-            .unwrap(),
-    ));
+    let path_info_service = GRPCPathInfoService::from_client(
+        "default".into(),
+        PathInfoServiceClient::new(
+            Endpoint::try_from("http://[::]:50051")
+                .unwrap()
+                .connect_with_connector(tower::service_fn(move |_: Uri| {
+                    let right = maybe_right.take().unwrap();
+                    async move { Ok::<_, std::io::Error>(TokioIo::new(right)) }
+                }))
+                .await
+                .unwrap(),
+        ),
+    );
 
     (blob_service, directory_service, path_info_service)
 }
@@ -73,7 +76,7 @@ pub(crate) async fn make_bigtable_path_info_service(
     use crate::pathinfoservice::bigtable::BigtableParameters;
     use crate::pathinfoservice::BigtablePathInfoService;
 
-    BigtablePathInfoService::connect(BigtableParameters::default_for_tests())
+    BigtablePathInfoService::connect("test".into(), BigtableParameters::default_for_tests())
         .await
         .unwrap()
 }