CommitGet actor

ng-broker/src/rocksdb_server_storage.rs

@@ -291,6 +291,7 @@ impl RocksDbServerStorage {
                     OverlayStorage::create(
                         inner_overlay,
                         &(*overlay_access).into(),
+                        expose_outer,
                         &self.core_storage,
                     )?
                 }
@@ -299,7 +300,7 @@ impl RocksDbServerStorage {
             };
         // the overlay we use to store all the info is: the outer for a RW access, and the inner for a WO access.
         let overlay = match inner_overlay_storage.overlay_type() {
-            OverlayType::Outer(_) => {
+            OverlayType::Outer(_) | OverlayType::OuterOnly => {
                 panic!("shouldnt happen: we are pinning to an inner overlay. why is it outer type?")
             }
             OverlayType::Inner(outer) => outer,
@@ -410,6 +411,13 @@ impl RocksDbServerStorage {
                 _ => e.into(),
             })?;
         Ok(match overlay_storage.overlay_type() {
+            OverlayType::OuterOnly => {
+                if overlay.is_outer() {
+                    *overlay
+                } else {
+                    return Err(ServerError::OverlayMismatch);
+                }
+            }
             OverlayType::Outer(_) => {
                 if overlay.is_outer() {
                     *overlay
@@ -472,8 +480,35 @@ impl RocksDbServerStorage {
         overlay: &OverlayId,
         id: &ObjectId,
     ) -> Result<Vec<Block>, ServerError> {
-        //TODO: implement correctly !
-        Ok(vec![Block::dummy()])
+        let overlay = self.check_overlay(overlay)?;
+
+        let mut commit_storage = CommitStorage::open(id, &overlay, &self.core_storage)?;
+
+        let event_info = commit_storage
+            .event()
+            .as_ref()
+            .ok_or(ServerError::NotFound)?;
+
+        // // rehydrate the event :
+        // let mut blocks = Vec::with_capacity(event_info.blocks.len());
+        // for block_id in event_info.blocks {
+        //     let block = self.block_storage.get(&overlay, &block_id)?;
+        //     blocks.push(block);
+        // }
+
+        // match event_info.event {
+        //     Event::V0(mut v0) => {
+        //         v0.content.blocks = blocks;
+        //     }
+        // }
+
+        let mut blocks = Vec::with_capacity(event_info.blocks.len());
+        for block_id in event_info.blocks.iter() {
+            let block = self.block_storage.get(&overlay, block_id)?;
+            blocks.push(block);
+        }
+
+        Ok(blocks)
     }
 
     fn add_block(
@@ -500,7 +535,7 @@ impl RocksDbServerStorage {
         let overlay = self.check_overlay(overlay)?;
         let overlay = &overlay;
 
-        // check that the sequence number is correct
+        // TODO: check that the sequence number is correct
 
         // check that the topic exists and that this user has pinned it as publisher
         let mut topic_storage = TopicStorage::open(event.topic_id(), overlay, &self.core_storage)
@@ -518,7 +553,7 @@ impl RocksDbServerStorage {
             return Err(ServerError::AccessDenied);
         }
 
-        // remove the blocks from inside the event, and save the empty event and each block separately.
+        // remove the blocks from inside the event, and save the "dehydrated" event and each block separately.
         match event {
             Event::V0(mut v0) => {
                 let mut overlay_storage = OverlayStorage::new(overlay, &self.core_storage);

ng-broker/src/server_broker.rs

@@ -61,6 +61,7 @@ pub struct CommitInfo {
 
 #[derive(Clone, Copy, Debug, Serialize, Deserialize, PartialEq, Eq)]
 pub enum OverlayType {
+    OuterOnly,
     Outer(OverlayId), // the ID of the inner overlay corresponding to this outer.
     Inner(OverlayId), // the ID of the outer overlay corresponding to the inner
     InnerOnly,
@@ -73,6 +74,18 @@ impl OverlayType {
             _ => None,
         }
     }
+    pub fn is_outer_to_inner(&self) -> bool {
+        match self {
+            Self::Outer(_) => true,
+            _ => false,
+        }
+    }
+    pub fn is_outer_only(&self) -> bool {
+        match self {
+            Self::OuterOnly => true,
+            _ => false,
+        }
+    }
 }
 
 impl From<OverlayAccess> for OverlayType {

ng-broker/src/server_storage/core/overlay.rs

@@ -101,10 +101,19 @@ impl<'a> OverlayStorage<'a> {
     pub fn create(
         id: &OverlayId,
         overlay_type: &OverlayType,
+        expose_outer: bool,
         storage: &'a dyn KCVStorage,
     ) -> Result<OverlayStorage<'a>, StorageError> {
         let mut overlay = OverlayStorage::new(id, storage);
         if overlay.exists() {
+            if !expose_outer
+                && overlay_type.is_outer_to_inner()
+                && overlay.overlay_type().is_outer_only()
+            {
+                // we are asked to upgrade an OuterOnly to an Outer().
+                // let's do it
+                ExistentialValue::save(&overlay, overlay_type)?;
+            }
             return Err(StorageError::AlreadyExists);
         }
         overlay.overlay_type.set(overlay_type)?;
@@ -112,15 +121,18 @@ impl<'a> OverlayStorage<'a> {
 
         if id.is_inner() {
             if let Some(outer) = overlay_type.is_inner_get_outer() {
-                match OverlayStorage::create(outer, &OverlayType::Outer(*id), storage) {
+                if expose_outer {
+                    match OverlayStorage::create(outer, &OverlayType::Outer(*id), false, storage) {
                         Err(StorageError::AlreadyExists) => {
-                        //it is ok if the Outer overlay already exists. someone else had pinned it before, in read_only, and the broker ahd subscribed to it from another broker
+                            //it is ok if the Outer overlay already exists. someone else had pinned it before, in read_only, and the broker had subscribed to it from another broker
+                            // or some other user pinned it before as expose_outer.
                         }
-                    Err(e) => return Err(e), //TODO: remove the existentialvalue that was previously saved (or use a transaction)
+                        Err(e) => return Err(e), //TODO: in case of error, remove the existentialvalue that was previously saved (or use a transaction)
                         Ok(_) => {}
                     }
                 }
             }
+        }
 
         Ok(overlay)
     }

ng-verifier/src/verifier.rs

@@ -768,13 +768,14 @@ impl Verifier {
             let user = self.config.user_priv_key.to_pub();
             let remote = self.connected_server_id.to_owned().unwrap();
             let read_cap = self.config.private_store_read_cap.as_ref().unwrap();
+            let private_store_id = self.config.private_store_id.as_ref().unwrap();
+            let private_inner_overlay_id = OverlayId::inner(private_store_id, &read_cap.key);
+
             // first we fetch the read_cap commit of private store repo.
             let msg = CommitGet::V0(CommitGetV0 {
                 id: read_cap.id,
                 topic: None, // we dont have the topic (only available from RepoLink/BranchLink) but we are pretty sure the Broker has the commit anyway.
-                overlay: Some(OverlayId::outer(
-                    self.config.private_store_id.as_ref().unwrap(),
-                )),
+                overlay: Some(private_inner_overlay_id),
             });
             match broker
                 .request::<CommitGet, Block>(&user, &remote, msg)