feat: Introduce EphemeralStorage, allowing storages to create temporary

Stores.

rust/noosphere-common/src/task.rs

@@ -13,6 +13,8 @@ use futures::future::join_all;
 #[cfg(not(target_arch = "wasm32"))]
 use tokio::task::JoinSet;
 
+use crate::ConditionalSend;
+
 #[cfg(target_arch = "wasm32")]
 /// Spawn a future by scheduling it with the local executor. The returned
 /// future will be pending until the spawned future completes.
@@ -43,6 +45,18 @@ where
     Ok(tokio::spawn(future).await?)
 }
 
+/// Spawns a [ConditionalSend] future without requiring `await`.
+/// The future will immediately start processing.
+pub fn spawn_no_wait<F>(future: F)
+where
+    F: Future<Output = ()> + ConditionalSend + 'static,
+{
+    #[cfg(target_arch = "wasm32")]
+    wasm_bindgen_futures::spawn_local(future);
+    #[cfg(not(target_arch = "wasm32"))]
+    tokio::task::spawn(future);
+}
+
 /// An aggregator of async work that can be used to observe the moment when all
 /// the aggregated work is completed. It is similar to tokio's [JoinSet], but is
 /// relatively constrained and also works on `wasm32-unknown-unknown`. Unlike

rust/noosphere-core/src/authority/author.rs

@@ -179,7 +179,7 @@ mod tests {
     #[cfg_attr(not(target_arch = "wasm32"), tokio::test)]
     async fn it_gives_read_only_access_when_there_is_no_authorization() -> Result<()> {
         let author = Author::anonymous();
-        let mut db = SphereDb::new(&MemoryStorage::default()).await?;
+        let mut db = SphereDb::new(MemoryStorage::default()).await?;
 
         let (sphere, _, _) = Sphere::generate("did:key:foo", &mut db).await?;
 
@@ -201,7 +201,7 @@ mod tests {
     async fn it_gives_read_write_access_if_the_key_is_authorized() -> Result<()> {
         let owner_key = generate_ed25519_key();
         let owner_did = Did(owner_key.get_did().await.unwrap());
-        let mut db = SphereDb::new(&MemoryStorage::default()).await.unwrap();
+        let mut db = SphereDb::new(MemoryStorage::default()).await.unwrap();
 
         let (sphere, authorization, _) = Sphere::generate(&owner_did, &mut db).await.unwrap();
 
@@ -227,7 +227,7 @@ mod tests {
     async fn it_gives_read_write_access_to_the_root_sphere_credential() -> Result<()> {
         let owner_key = generate_ed25519_key();
         let owner_did = Did(owner_key.get_did().await.unwrap());
-        let mut db = SphereDb::new(&MemoryStorage::default()).await.unwrap();
+        let mut db = SphereDb::new(MemoryStorage::default()).await.unwrap();
 
         let (sphere, authorization, mnemonic) =
             Sphere::generate(&owner_did, &mut db).await.unwrap();
@@ -256,7 +256,7 @@ mod tests {
     async fn it_can_find_itself_in_an_authorization_lineage() -> Result<()> {
         let owner_key = generate_ed25519_key();
         let owner_did = Did(owner_key.get_did().await.unwrap());
-        let mut db = SphereDb::new(&MemoryStorage::default()).await.unwrap();
+        let mut db = SphereDb::new(MemoryStorage::default()).await.unwrap();
 
         let (sphere, authorization, _) = Sphere::generate(&owner_did, &mut db).await.unwrap();
 

rust/noosphere-core/src/context/context.rs

@@ -393,7 +393,7 @@ mod tests {
             let mut records: Vec<LinkRecord> = vec![];
             let owner_key = generate_ed25519_key();
             let owner_did = owner_key.get_did().await?;
-            let mut db = SphereDb::new(&MemoryStorage::default()).await?;
+            let mut db = SphereDb::new(MemoryStorage::default()).await?;
             let (sphere, proof, _) = Sphere::generate(&owner_did, &mut db).await?;
             let ucan_proof = proof.as_ucan(&db).await?;
             let sphere_identity = sphere.get_identity().await?;

rust/noosphere-core/src/data/address.rs

@@ -403,7 +403,7 @@ mod tests {
         let sphere_identity = Did::from(sphere_key.get_did().await?);
         let link = "bafyr4iagi6t6khdrtbhmyjpjgvdlwv6pzylxhuhstxhkdp52rju7er325i";
         let cid_link: Link<MemoIpld> = link.parse()?;
-        let store = SphereDb::new(&MemoryStorage::default()).await.unwrap();
+        let store = SphereDb::new(MemoryStorage::default()).await.unwrap();
 
         let record = from_issuer(&sphere_key, &sphere_identity, &cid_link, None).await?;
 
@@ -422,7 +422,7 @@ mod tests {
         let sphere_identity = Did::from(sphere_key.get_did().await?);
         let link = "bafyr4iagi6t6khdrtbhmyjpjgvdlwv6pzylxhuhstxhkdp52rju7er325i";
         let cid_link: Cid = link.parse()?;
-        let mut store = SphereDb::new(&MemoryStorage::default()).await.unwrap();
+        let mut store = SphereDb::new(MemoryStorage::default()).await.unwrap();
 
         // First verify that `owner` cannot publish for `sphere`
         // without delegation.
@@ -486,7 +486,7 @@ mod tests {
         let sphere_key = generate_ed25519_key();
         let sphere_identity = Did::from(sphere_key.get_did().await?);
         let cid_address = "bafyr4iagi6t6khdrtbhmyjpjgvdlwv6pzylxhuhstxhkdp52rju7er325i";
-        let store = SphereDb::new(&MemoryStorage::default()).await.unwrap();
+        let store = SphereDb::new(MemoryStorage::default()).await.unwrap();
 
         expect_failure(
             "fails when expect `fact` is missing",
@@ -676,7 +676,7 @@ mod tests {
         let delegatee_key = generate_ed25519_key();
         let delegatee_did = delegatee_key.get_did().await?;
 
-        let mut db = SphereDb::new(&MemoryStorage::default()).await?;
+        let mut db = SphereDb::new(MemoryStorage::default()).await?;
         let mut ucan_store = UcanStore(db.clone());
 
         let (sphere, proof, _) = Sphere::generate(&owner_did, &mut db).await?;

rust/noosphere-core/src/data/sphere.rs

@@ -78,7 +78,7 @@ mod tests {
         let identity_credential = generate_ed25519_key();
         let identity = Did(identity_credential.get_did().await?);
 
-        let mut store = SphereDb::new(&MemoryStorage::default()).await?;
+        let mut store = SphereDb::new(MemoryStorage::default()).await?;
 
         let sphere = SphereIpld::new(&identity, &mut store).await?;
 
@@ -127,7 +127,7 @@ mod tests {
         let identity = Did(identity_credential.get_did().await?);
         let authorized = Did(authorized_credential.get_did().await?);
 
-        let mut store = SphereDb::new(&MemoryStorage::default()).await?;
+        let mut store = SphereDb::new(MemoryStorage::default()).await?;
 
         let sphere = SphereIpld::new(&identity, &mut store).await?;
 

rust/noosphere-core/src/helpers/context.rs

@@ -39,7 +39,7 @@ pub async fn simulated_sphere_context(
         Some(db) => db,
         None => {
             let storage_provider = TrackingStorage::wrap(MemoryStorage::default());
-            SphereDb::new(&storage_provider).await?
+            SphereDb::new(storage_provider).await?
         }
     };
 

rust/noosphere-core/src/helpers/link.rs

@@ -16,7 +16,7 @@ where
 {
     let owner_key = generate_ed25519_key();
     let owner_did = owner_key.get_did().await?;
-    let mut db = SphereDb::new(&MemoryStorage::default()).await?;
+    let mut db = SphereDb::new(MemoryStorage::default()).await?;
 
     let (sphere, proof, _) = Sphere::generate(&owner_did, &mut db).await?;
     let ucan_proof = proof.as_ucan(&db).await?;

rust/noosphere-into/examples/notes-to-html/implementation.rs

@@ -27,7 +27,7 @@ use ucan::crypto::KeyMaterial;
 
 pub async fn main() -> Result<()> {
     let storage_provider = MemoryStorage::default();
-    let mut db = SphereDb::new(&storage_provider).await.unwrap();
+    let mut db = SphereDb::new(storage_provider).await.unwrap();
 
     let owner_key: SphereContextKey = Arc::new(Box::new(generate_ed25519_key()));
     let owner_did = owner_key.get_did().await?;

rust/noosphere-ipfs/src/storage.rs

@@ -3,7 +3,7 @@ use anyhow::Result;
 use async_trait::async_trait;
 use cid::Cid;
 use noosphere_common::ConditionalSync;
-use noosphere_storage::{BlockStore, Storage};
+use noosphere_storage::{BlockStore, EphemeralStorage, EphemeralStore, Storage};
 use std::sync::Arc;
 use tokio::sync::RwLock;
 
@@ -45,7 +45,6 @@ where
     C: IpfsClient + ConditionalSync,
 {
     type BlockStore = IpfsStore<S::BlockStore, C>;
-
     type KeyValueStore = S::KeyValueStore;
 
     async fn get_block_store(&self, name: &str) -> Result<Self::BlockStore> {
@@ -58,6 +57,20 @@ where
     }
 }
 
+#[cfg_attr(not(target_arch = "wasm32"), async_trait)]
+#[cfg_attr(target_arch = "wasm32", async_trait(?Send))]
+impl<S, C> EphemeralStorage for IpfsStorage<S, C>
+where
+    S: Storage + EphemeralStorage + ConditionalSync,
+    C: IpfsClient + ConditionalSync,
+{
+    type EphemeralStoreType = <S as EphemeralStorage>::EphemeralStoreType;
+
+    async fn get_ephemeral_store(&self) -> Result<EphemeralStore<Self::EphemeralStoreType>> {
+        self.local_storage.get_ephemeral_store().await
+    }
+}
+
 /// An implementation of [BlockStore] that wraps some other implementation of
 /// same. It forwards most behavior to its wrapped implementation, except when
 /// reading blocks. In that case, if a block cannot be found locally, it will

rust/noosphere-ns/src/builder.rs

@@ -23,7 +23,7 @@ use libp2p::kad::KademliaConfig;
 /// #[tokio::main(flavor = "multi_thread")]
 /// async fn main() {
 ///     let key_material = generate_ed25519_key();
-///     let store = SphereDb::new(&MemoryStorage::default()).await.unwrap();
+///     let store = SphereDb::new(MemoryStorage::default()).await.unwrap();
 ///
 ///     let ns = NameSystemBuilder::default()
 ///         .ucan_store(store)
@@ -190,7 +190,7 @@ mod tests {
             let keypair = key_material.to_dht_keypair()?;
             PeerId::from(keypair.public())
         };
-        let store = SphereDb::new(&MemoryStorage::default()).await.unwrap();
+        let store = SphereDb::new(MemoryStorage::default()).await.unwrap();
         let bootstrap_peers: Vec<Multiaddr> = vec![
             "/ip4/127.0.0.50/tcp/33333/p2p/12D3KooWH8WgH9mgbMXrKX4veokUznvEn6Ycwg4qaGNi83nLkoUK"
                 .parse()?,

rust/noosphere-ns/src/dht_client.rs

@@ -133,7 +133,7 @@ pub mod test {
         // Now test another node connecting.
         let (_other_ns, other_peer_id) = {
             let key_material = generate_ed25519_key();
-            let store = SphereDb::new(&MemoryStorage::default()).await.unwrap();
+            let store = SphereDb::new(MemoryStorage::default()).await.unwrap();
             let ns = NameSystemBuilder::default()
                 .ucan_store(store)
                 .key_material(&key_material)

rust/noosphere-ns/src/name_system.rs

@@ -172,7 +172,7 @@ mod test {
     async fn before_name_resolver_tests() -> Result<NameSystem> {
         let ns = {
             let key_material = generate_ed25519_key();
-            let store = SphereDb::new(&MemoryStorage::default()).await.unwrap();
+            let store = SphereDb::new(MemoryStorage::default()).await.unwrap();
             let ns = NameSystemBuilder::default()
                 .ucan_store(store)
                 .key_material(&key_material)
@@ -205,7 +205,7 @@ mod test {
     async fn before_each() -> Result<(DataPlaceholder, Arc<Mutex<NameSystem>>)> {
         let (bootstrap, bootstrap_address) = {
             let key_material = generate_ed25519_key();
-            let store = SphereDb::new(&MemoryStorage::default()).await.unwrap();
+            let store = SphereDb::new(MemoryStorage::default()).await.unwrap();
             let ns = NameSystemBuilder::default()
                 .ucan_store(store)
                 .key_material(&key_material)
@@ -221,7 +221,7 @@ mod test {
 
         let ns = {
             let key_material = generate_ed25519_key();
-            let store = SphereDb::new(&MemoryStorage::default()).await.unwrap();
+            let store = SphereDb::new(MemoryStorage::default()).await.unwrap();
             let ns = NameSystemBuilder::default()
                 .ucan_store(store)
                 .key_material(&key_material)

rust/noosphere-ns/src/server/client.rs

@@ -146,7 +146,7 @@ mod test {
     async fn before_each() -> Result<(DataPlaceholder, Arc<Mutex<HttpClient>>)> {
         let (bootstrap, bootstrap_address) = {
             let key_material = generate_ed25519_key();
-            let store = SphereDb::new(&MemoryStorage::default()).await.unwrap();
+            let store = SphereDb::new(MemoryStorage::default()).await.unwrap();
             let ns = NameSystemBuilder::default()
                 .ucan_store(store)
                 .key_material(&key_material)
@@ -164,7 +164,7 @@ mod test {
         let api_port = api_listener.local_addr().unwrap().port();
         let api_url = Url::parse(&format!("http://127.0.0.1:{}", api_port))?;
         let key_material = generate_ed25519_key();
-        let store = SphereDb::new(&MemoryStorage::default()).await.unwrap();
+        let store = SphereDb::new(MemoryStorage::default()).await.unwrap();
 
         let ns = NameSystemBuilder::default()
             .ucan_store(store)

rust/noosphere-ns/tests/ns_test.rs

@@ -75,7 +75,7 @@ async fn test_name_system_peer_propagation() -> Result<()> {
     initialize_tracing(None);
     // Create two NameSystems, where `ns_1` is publishing for `sphere_1`
     // and `ns_2` is publishing for `sphere_2`.
-    let mut db = SphereDb::new(&MemoryStorage::default()).await?;
+    let mut db = SphereDb::new(MemoryStorage::default()).await?;
     let network = NameSystemNetwork::generate(3, Some(db.clone())).await?;
     let sphere_1_cid_1 = derive_cid::<DagCborCodec>(b"00000000");
     let sphere_1_cid_2 = derive_cid::<DagCborCodec>(b"11111111");
@@ -172,7 +172,7 @@ async fn test_name_system_peer_propagation() -> Result<()> {
 #[tokio::test]
 async fn test_name_system_validation() -> Result<()> {
     initialize_tracing(None);
-    let mut db = SphereDb::new(&MemoryStorage::default()).await?;
+    let mut db = SphereDb::new(MemoryStorage::default()).await?;
     let network = NameSystemNetwork::generate(2, Some(db.clone())).await?;
 
     let ns_1 = network.get(1).unwrap();

rust/noosphere-storage/Cargo.toml

@@ -21,29 +21,27 @@ readme = "README.md"
 anyhow = { workspace = true }
 async-trait = "~0.1"
 async-stream = { workspace = true }
+futures = { workspace = true }
 tokio-stream = { workspace = true }
 cid = { workspace = true }
 noosphere-common = { version = "0.1.2", path = "../noosphere-common" }
 tracing = "~0.1"
 ucan = { workspace = true }
 libipld-core = { workspace = true }
 libipld-cbor = { workspace = true }
+rand = { workspace = true }
 serde = { workspace = true }
 base64 = "=0.21.4"
 url = { version = "^2" }
 
 [dev-dependencies]
-witty-phrase-generator = "~0.2"
 wasm-bindgen-test = { workspace = true }
-rand = { workspace = true }
 noosphere-core-dev = { path = "../noosphere-core", features = ["helpers"], package = "noosphere-core" }
 noosphere-common = { path = "../noosphere-common", features = ["helpers"] }
 instant = { workspace = true }
 
-[target.'cfg(not(target_arch = "wasm32"))'.dev-dependencies]
-tempfile = { workspace = true }
-
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
+tempfile = { workspace = true }
 sled = "~0.34"
 tokio = { workspace = true, features = ["full"] }
 rocksdb = { version = "0.21.0", optional = true }
@@ -52,6 +50,7 @@ rocksdb = { version = "0.21.0", optional = true }
 tokio = { workspace = true, features = ["sync", "macros"] }
 wasm-bindgen = { workspace = true, features = ["serde-serialize"] }
 wasm-bindgen-futures = { workspace = true }
+witty-phrase-generator = "~0.2"
 serde-wasm-bindgen = { workspace = true }
 js-sys = { workspace = true }
 rexie = { version = "~0.5" }

rust/noosphere-storage/examples/bench/main.rs

@@ -179,7 +179,7 @@ impl BenchmarkStorage {
     }
 
     pub async fn sphere_db(&self) -> Result<SphereDb<ActiveStorageType>> {
-        SphereDb::new(&self.storage).await
+        SphereDb::new(self.storage.clone()).await
     }
 
     pub async fn as_stats(&mut self) -> Result<PerformanceStats> {

rust/noosphere-storage/examples/bench/performance.rs

@@ -1,7 +1,7 @@
 use anyhow::{Error, Result};
 use async_trait::async_trait;
 use instant::{Duration, Instant};
-use noosphere_storage::{Space, Storage, Store};
+use noosphere_storage::{EphemeralStorage, EphemeralStore, Space, Storage, Store};
 use std::{collections::HashMap, sync::Arc};
 use tokio::sync::Mutex;
 
@@ -208,3 +208,16 @@ impl<S: Store> Store for PerformanceStore<S> {
         result
     }
 }
+
+#[cfg_attr(not(target_arch = "wasm32"), async_trait)]
+#[cfg_attr(target_arch = "wasm32", async_trait(?Send))]
+impl<S> EphemeralStorage for PerformanceStorage<S>
+where
+    S: Storage,
+{
+    type EphemeralStoreType = <S as EphemeralStorage>::EphemeralStoreType;
+
+    async fn get_ephemeral_store(&self) -> Result<EphemeralStore<Self::EphemeralStoreType>> {
+        self.storage.get_ephemeral_store().await
+    }
+}