DB up/down/sidegrade

bffhd/capnp/machine.rs

@@ -1,4 +1,4 @@
-use crate::resources::modules::fabaccess::MachineState;
+use crate::resources::modules::fabaccess::{MachineState, Status};
 use crate::resources::Resource;
 use crate::session::SessionHandle;
 use api::machine_capnp::machine::{
@@ -49,7 +49,7 @@ impl UseServer for Machine {
         let session = self.session.clone();
         Promise::from_future(async move {
             let user = session.get_user();
-            resource.try_update(session, MachineState::used(user)).await;
+            resource.try_update(session, Status::InUse(user)).await;
             Ok(())
         })
     }
@@ -64,7 +64,7 @@ impl UseServer for Machine {
         Promise::from_future(async move {
             let user = session.get_user();
             resource
-                .try_update(session, MachineState::reserved(user))
+                .try_update(session, Status::Reserved(user))
                 .await;
             Ok(())
         })
@@ -166,7 +166,7 @@ impl ManageServer for Machine {
         let session = self.session.clone();
         Promise::from_future(async move {
             resource
-                .force_set(MachineState::used(session.get_user()))
+                .force_set(Status::InUse(session.get_user()))
                 .await;
             Ok(())
         })
@@ -180,7 +180,7 @@ impl ManageServer for Machine {
         let resource = self.resource.clone();
         let session = self.session.clone();
         Promise::from_future(async move {
-            resource.force_set(MachineState::free()).await;
+            resource.force_set(Status::Free).await;
             Ok(())
         })
     }
@@ -203,7 +203,7 @@ impl ManageServer for Machine {
         let session = self.session.clone();
         Promise::from_future(async move {
             resource
-                .force_set(MachineState::blocked(session.get_user()))
+                .force_set(Status::Blocked(session.get_user()))
                 .await;
             Ok(())
         })
@@ -215,7 +215,7 @@ impl ManageServer for Machine {
     ) -> Promise<(), ::capnp::Error> {
         let mut resource = self.resource.clone();
         Promise::from_future(async move {
-            resource.force_set(MachineState::disabled()).await;
+            resource.force_set(Status::Disabled).await;
             Ok(())
         })
     }
@@ -230,12 +230,12 @@ impl AdminServer for Machine {
         use api::schema::machine_capnp::machine::MachineState as APIMState;
         let user = self.session.get_user();
         let state = match pry!(pry!(params.get()).get_state()) {
-            APIMState::Free => MachineState::free(),
+            APIMState::Free => Status::Free,
-            APIMState::Blocked => MachineState::blocked(user),
+            APIMState::Blocked => Status::Blocked(user),
-            APIMState::Disabled => MachineState::disabled(),
+            APIMState::Disabled => Status::Disabled,
-            APIMState::InUse => MachineState::used(user),
+            APIMState::InUse => Status::InUse(user),
-            APIMState::Reserved => MachineState::reserved(user),
+            APIMState::Reserved => Status::Reserved(user),
-            APIMState::ToCheck => MachineState::check(user),
+            APIMState::ToCheck => Status::ToCheck(user),
             APIMState::Totakeover => return Promise::err(::capnp::Error::unimplemented(
                     "totakeover not implemented".to_string(),
                 )),

bffhd/db/mod.rs

@@ -30,7 +30,6 @@ pub use typed::{
 mod hash;
 pub use hash::{
     HashDB,
-    Entry,
 };
 
 mod fix;
@@ -45,11 +44,12 @@ use std::sync::Arc;
 use std::path::Path;
 use crate::users::db::{User, UserDB};
 use std::collections::HashMap;
-use crate::resources::state::{OwnedEntry, State, db::StateDB};
+use rkyv::Infallible;
+use crate::resources::state::{State, db::StateDB};
 use std::iter::FromIterator;
 use std::ops::Deref;
 use crate::authentication::db::PassDB;
-use crate::resources::db::ResourceDB;
+use crate::resources::search::ResourcesHandle;
 use crate::utils::oid::{ArchivedObjectIdentifier, ObjectIdentifier};
 use crate::resources::state::value::SerializeValue;
 
@@ -117,99 +117,25 @@ impl<V: Serialize<AlignedSerializer<AlignedVec>>> Adapter for AlignedAdapter<V>
     }
 }
 
-#[derive(Debug)]
-pub struct Databases {
-    pub userdb: UserDB,
-    pub passdb: PassDB,
-    pub resourcedb: ResourceDB,
-    pub statedb: StateDB,
-}
-
-impl Databases {
-    pub fn open<P: AsRef<Path>>(path: P) -> Result<Self> {
-        let env = Arc::new(Environment::new()
-            .open(&Path::join(path.as_ref(), "internal"))?
-        );
-        let userdb = unsafe { UserDB::open(env.clone())? };
-        let passdb = unsafe { PassDB::open(env.clone())? };
-        let resourcedb = unsafe { ResourceDB::open(env)? };
-
-        let statedb = StateDB::open(&Path::join(path.as_ref(), "state"))?;
-
-        Ok(Self { userdb, passdb, resourcedb, statedb })
-    }
-
-    pub fn create<P: AsRef<Path>>(path: P) -> Result<Self> {
-        let env = Arc::new(Environment::new()
-            .set_max_dbs(16)
-            .open(path.as_ref())?
-        );
-        let userdb = unsafe { UserDB::create(env.clone())? };
-        let passdb = unsafe { PassDB::create(env.clone())? };
-        let resourcedb = unsafe { ResourceDB::create(env)? };
-
-        let statedb = StateDB::create(&Path::join(path.as_ref(), "state"))?;
-
-        Ok(Self { userdb, passdb, resourcedb, statedb })
-    }
-}
-
 #[derive(Debug, serde::Serialize)]
 pub struct Dump {
     users: HashMap<String, User>,
     passwds: HashMap<String, String>,
-    states: HashMap<String, (State, State)>,
+    states: HashMap<String, State>,
 }
 
 impl Dump {
-    pub fn new(dbs: &Databases) -> Result<Self> {
+    pub fn new(userdb: UserDB, passdb: PassDB, resources: ResourcesHandle) -> Result<Self> {
-        let users = HashMap::from_iter(dbs.userdb.get_all()?.into_iter());
+        let users = HashMap::from_iter(userdb.get_all()?.into_iter());
-        let passwds = HashMap::from_iter(dbs.passdb.get_all()?.into_iter());
+        let passwds = HashMap::from_iter(passdb.get_all()?.into_iter());
         let mut states = HashMap::new();
-        for (name, id) in  dbs.resourcedb.get_all()?.into_iter() {
+        for resource in resources.list_all().into_iter() {
-            let input = dbs.statedb.get_input(id)?.map(|input| {
+            if let Some(output) = resource.get_raw_state() {
-                let input: &Archived<State> = input.deref();
+                let output: State = Deserialize::<State, _>::deserialize(output.deref(), &mut Infallible).unwrap();
-                let hash: u64 = input.hash;
+                let old = states.insert(resource.get_id().to_string(), output);
-                let inner = input.inner.iter()
-                    .map(|entry| {
-
-                    let oid: &ArchivedObjectIdentifier = &entry.oid;
-                    let bytes: &[u8] = oid.deref();
-                    let mut vec = Vec::with_capacity(bytes.len());
-                    vec.copy_from_slice(bytes);
-                    let oid = ObjectIdentifier::new_unchecked(vec.into_boxed_slice());
-
-                    let val: Box<dyn SerializeValue> = entry.val
-                        .deserialize(&mut rkyv::Infallible).unwrap();
-
-                    OwnedEntry { oid, val }
-                }).collect();
-                State { hash, inner }
-            }).unwrap_or(State::build().finish());
-
-            let output = dbs.statedb.get_output(id)?.map(|output| {
-                let output: &Archived<State> = output.deref();
-                let hash: u64 = output.hash;
-                let inner = output.inner.iter().map(|entry| {
-
-                    let oid: &ArchivedObjectIdentifier = &entry.oid;
-                    let bytes: &[u8] = oid.deref();
-                    let mut vec = Vec::with_capacity(bytes.len());
-                    vec.copy_from_slice(bytes);
-                    let oid = ObjectIdentifier::new_unchecked(vec.into_boxed_slice());
-
-                    let val: Box<dyn SerializeValue> = entry.val
-                        .deserialize(&mut rkyv::Infallible).unwrap();
-
-                    OwnedEntry { oid, val }
-                }).collect();
-
-                State { hash, inner }
-            }).unwrap_or(State::build().finish());
-
-            let old = states.insert(name, (input, output));
                 assert!(old.is_none());
             }
+        }
 
         Ok(Self { users, passwds, states })
     }

bffhd/lib.rs

@@ -53,6 +53,7 @@ use executor::pool::Executor;
 use crate::authentication::AuthenticationHandle;
 use crate::capnp::APIServer;
 use crate::config::{Config, TlsListen};
+use crate::resources::modules::fabaccess::MachineState;
 use crate::session::SessionManager;
 use crate::tls::TlsConfig;
 
@@ -87,7 +88,9 @@ impl Diflouroborane {
             SIGTERM,
         ]).context("Failed to construct signal handler")?;
 
-
+        // - Load Machines from config
+        // - Load states from DB
+        // - Connect modules to machines
 
         let tlsconfig = TlsConfig::new(config.tlskeylog.as_ref(), !config.is_quiet())?;
         let acceptor = tlsconfig.make_tls_acceptor(&config.tlsconfig)?;

bffhd/resources/db.rs

@@ -6,6 +6,7 @@ use crate::db::RawDB;
 use std::sync::Arc;
 use crate::db::{Environment, DatabaseFlags};
 use crate::db::Result;
+use crate::resources::state::db::StateDB;
 
 #[derive(Clone, Debug, PartialEq, Eq)]
 #[derive(Archive, Serialize, Deserialize)]
@@ -16,55 +17,3 @@ pub struct Resource {
     name_idx: u64,
     description_idx: u64,
 }
-
-#[derive(Debug, Clone)]
-pub struct ResourceDB {
-    env: Arc<Environment>,
-    db: DB<AllocAdapter<Resource>>,
-    id_index: DB<AlignedAdapter<u64>>,
-}
-
-impl ResourceDB {
-    pub unsafe fn new(env: Arc<Environment>, db: RawDB, id_index: RawDB) -> Self {
-        let db = DB::new_unchecked(db);
-        let id_index = DB::new_unchecked(id_index);
-
-        Self { env, db, id_index }
-    }
-
-    pub unsafe fn open(env: Arc<Environment>) -> Result<Self> {
-        let db = RawDB::open(&env, Some("resources"))?;
-        let idx = RawDB::open(&env, Some("resources-idx"))?;
-        Ok(Self::new(env, db, idx))
-    }
-
-    pub unsafe fn create(env: Arc<Environment>) -> Result<Self> {
-        let flags = DatabaseFlags::empty();
-        let db = RawDB::create(&env, Some("resources"), flags)?;
-        let idx = RawDB::create(&env, Some("resources-idx"), flags)?;
-        Ok(Self::new(env, db, idx))
-    }
-
-    pub fn lookup_id<S: AsRef<str>>(&self, id: S) -> Result<Option<u64>> {
-        let txn = self.env.begin_ro_txn()?;
-        let id = self.id_index.get(&txn, &id.as_ref().as_bytes()).map(|ok| {
-            ok.map(|num| *num)
-        })?;
-        Ok(id)
-    }
-
-    pub fn get_all(&self) -> Result<Vec<(String, u64)>> {
-        let txn = self.env.begin_ro_txn()?;
-        let mut cursor = self.id_index.open_ro_cursor(&txn)?;
-        let iter = cursor.iter_start();
-        let mut out = Vec::new();
-
-        for id in iter {
-            let (name, id) = id?;
-            let name = unsafe { std::str::from_utf8_unchecked(name).to_string() };
-            out.push((name, *id));
-        }
-
-        Ok(out)
-    }
-}

bffhd/resources/driver.rs

@@ -4,9 +4,9 @@ use async_trait::async_trait;
 use futures_signals::signal::Mutable;
 use async_oneshot::Sender;
 use async_channel::Receiver;
+use crate::resources::state::db::StateDB;
 
 use super::state::State;
-use super::state::db::StateAccessor;
 
 /// A resources in BFFH has to contain several different parts;
 /// - Currently set state
@@ -77,7 +77,8 @@ pub struct ResourceDriver {
     rx: Receiver<Update>,
 
     // output
-    db: StateAccessor,
+    db: StateDB,
+    key: String,
 
     signal: Mutable<State>,
 }
@@ -99,7 +100,7 @@ impl ResourceDriver {
                     //  "Best" solution would be to tell the resources to rollback their interal
                     //  changes on a fatal failure and then notify the Claimant, while simply trying
                     //  again for temporary failures.
-                    let _ = self.db.set(&state, &outstate);
+                    let _ = self.db.update(self.key.as_bytes(), &state, &outstate);
                     self.signal.set(outstate);
                 },
                 Err(e) => {

bffhd/resources/mod.rs

@@ -1,4 +1,11 @@
+use std::ops::Deref;
+use std::sync::Arc;
+use futures_signals::signal::{Mutable, Signal, SignalExt};
+use lmdb::RoTransaction;
+use rkyv::Archived;
+use crate::db::LMDBorrow;
 use crate::resources::modules::fabaccess::{MachineState, Status};
+use crate::resources::state::db::StateDB;
 use crate::resources::state::State;
 use crate::session::SessionHandle;
 use crate::users::User;
@@ -13,15 +20,78 @@ pub mod modules;
 
 pub struct PermissionDenied;
 
-#[derive(Clone)]
+pub(crate) struct Inner {
-pub struct Resource {}
+    id: String,
+    db: StateDB,
+    signal: Mutable<MachineState>,
+}
+impl Inner {
+    pub fn new(id: String, db: StateDB) -> Self {
+        let state = if let Some(previous) = db.get_output(id.as_bytes()).unwrap() {
+            let state = MachineState::from(&previous);
+            tracing::info!(%id, ?state, "Found previous state");
+            state
+        } else {
+            tracing::info!(%id, "No previous state, defaulting to `free`");
+            MachineState::free(None)
+        };
+        let signal = Mutable::new(state);
 
-impl Resource {
+        Self { id, db, signal }
-    pub fn get_state(&self) -> MachineState {
+    }
-        unimplemented!()
+
+    pub fn signal(&self) -> impl Signal<Item=MachineState> {
+        Box::pin(self.signal.signal_cloned().dedupe_cloned())
+    }
+
+    fn get_state(&self) -> MachineState {
+        MachineState::from(&self.db.get_output(self.id.as_bytes()).unwrap().unwrap())
+    }
+
+    fn get_raw_state(&self) -> Option<LMDBorrow<RoTransaction, Archived<State>>> {
+        self.db.get_output(self.id.as_bytes()).unwrap()
     }
 
     fn set_state(&self, state: MachineState) {
+        let span = tracing::debug_span!("set", id = %self.id, ?state, "Updating state");
+        let _guard = span.enter();
+        tracing::debug!("Updating state");
+        tracing::trace!("Updating DB");
+        let update = state.to_state();
+        self.db.update(self.id.as_bytes(), &update, &update).unwrap();
+        tracing::trace!("Updated DB, sending update signal");
+        self.signal.set(state);
+        tracing::trace!("Sent update signal");
+    }
+}
+
+#[derive(Clone)]
+pub struct Resource {
+    inner: Arc<Inner>
+}
+
+impl Resource {
+    pub(crate) fn new(inner: Arc<Inner>) -> Self {
+        Self { inner }
+    }
+
+    pub fn get_raw_state(&self) -> Option<LMDBorrow<RoTransaction, Archived<State>>> {
+        self.inner.get_raw_state()
+    }
+
+    pub fn get_state(&self) -> MachineState {
+        self.inner.get_state()
+    }
+
+    pub fn get_id(&self) -> &str {
+        &self.inner.id
+    }
+
+    fn set_state(&self, state: MachineState) {
+
+    }
+
+    fn set_status(&self, state: Status) {
         unimplemented!()
     }
 
@@ -29,14 +99,14 @@ impl Resource {
         unimplemented!()
     }
 
-    pub async fn try_update(&self, session: SessionHandle, new: MachineState) {
+    pub async fn try_update(&self, session: SessionHandle, new: Status) {
         let old = self.get_state();
         let user = session.get_user();
 
         if session.has_manage(self) // Default allow for managers
 
             || (session.has_write(self) // Decision tree for writers
-                && match (old.state, &new.state) {
+                && match (old.state, &new) {
                 // Going from available to used by the person requesting is okay.
                 (Status::Free, Status::InUse(who))
                 // Check that the person requesting does not request for somebody else.
@@ -67,7 +137,7 @@ impl Resource {
             })
 
             // Default permissions everybody has
-            || match (old.state, &new.state) {
+            || match (old.state, &new) {
                 // Returning things we've been using is okay. This includes both if
                 // they're being freed or marked as to be checked.
                 (Status::InUse(who), Status::Free | Status::ToCheck(_)) if who == user => true,
@@ -79,20 +149,19 @@ impl Resource {
                 _ => false,
             }
         {
-            self.set_state(new);
+            self.set_status(new);
         }
     }
 
     pub async fn give_back(&self, session: SessionHandle) {
         if let Status::InUse(user) = self.get_state().state {
             if user == session.get_user() {
-                self.set_state(MachineState::free());
+                self.set_state(MachineState::free(Some(user)));
-                self.set_previous_user(user);
             }
         }
     }
 
-    pub async fn force_set(&self, new: MachineState) {
+    pub async fn force_set(&self, new: Status) {
         unimplemented!()
     }
 

bffhd/resources/modules/fabaccess.rs

@@ -1,10 +1,13 @@
+use std::ops::Deref;
 use crate::utils::oid::ObjectIdentifier;
 use once_cell::sync::Lazy;
-use rkyv::{Archive, Deserialize, Serialize};
+use rkyv::{Archive, Archived, Deserialize, Serialize, Infallible};
 use rkyv_dyn::{DynError, DynSerializer};
 use std::str::FromStr;
 
 use crate::oidvalue;
+use crate::resources::state::{State};
+use crate::resources::state::value::Value;
 use crate::session::SessionHandle;
 use crate::users::User;
 
@@ -49,66 +52,77 @@ pub enum Status {
     serde::Serialize,
     serde::Deserialize,
 )]
-#[archive_attr(derive(Debug, PartialEq, serde::Serialize, serde::Deserialize))]
+#[archive_attr(derive(Debug, PartialEq))]
 /// The status of the machine
 pub struct MachineState {
     pub state: Status,
+    pub previous: Option<User>,
 }
 
 impl MachineState {
     pub fn new() -> Self {
         Self {
             state: Status::Free,
+            previous: None,
         }
     }
 
-    pub fn from(state: Status) -> Self {
+    pub fn from(dbstate: &Archived<State>) -> Self {
-        Self { state }
+        use std::any::TypeId;
+        let state: &Archived<MachineState> = &dbstate.inner;
+        Deserialize::deserialize(state, &mut Infallible).unwrap()
+    }
+    pub fn to_state(&self) -> State {
+        State {
+            inner: self.clone()
+        }
     }
 
-    pub fn free() -> Self {
+    pub fn free(previous: Option<User>) -> Self {
         Self {
             state: Status::Free,
+            previous,
         }
     }
 
-    pub fn used(user: User) -> Self {
+    pub fn used(user: User, previous: Option<User>) -> Self {
         Self {
             state: Status::InUse(user),
+            previous,
         }
     }
 
-    pub fn blocked(user: User) -> Self {
+    pub fn blocked(user: User, previous: Option<User>) -> Self {
         Self {
             state: Status::Blocked(user),
+            previous,
         }
     }
 
-    pub fn disabled() -> Self {
+    pub fn disabled(previous: Option<User>) -> Self {
         Self {
             state: Status::Disabled,
+            previous,
         }
     }
 
-    pub fn reserved(user: User) -> Self {
+    pub fn reserved(user: User, previous: Option<User>) -> Self {
         Self {
             state: Status::Reserved(user),
+            previous,
         }
     }
 
     pub fn check(user: User) -> Self {
         Self {
             state: Status::ToCheck(user),
+            previous: Some(user),
         }
     }
-
-    pub fn make_used(&mut self, session: SessionHandle) -> Self {
-        unimplemented!()
-    }
 }
 
-static OID_TYPE: Lazy<ObjectIdentifier> =
+pub static OID_TYPE: Lazy<ObjectIdentifier> =
     Lazy::new(|| ObjectIdentifier::from_str("1.3.6.1.4.1.48398.612.1.14").unwrap());
-static OID_VALUE: Lazy<ObjectIdentifier> =
+pub static OID_VALUE: Lazy<ObjectIdentifier> =
     Lazy::new(|| ObjectIdentifier::from_str("1.3.6.1.4.1.48398.612.2.4").unwrap());
 oidvalue!(OID_TYPE, MachineState, ArchivedMachineState);

bffhd/resources/state/db.rs

@@ -29,7 +29,7 @@ use crate::resources::state::State;
 type StateAdapter = AllocAdapter<State>;
 
 /// State Database containing the currently set state
-#[derive(Clone, Debug)]
+#[derive(Debug)]
 pub struct StateDB {
     /// The environment for all the databases below
     env: Arc<Environment>,
@@ -55,18 +55,6 @@ impl StateDB {
         Self { env: Arc::new(env), input, output }
     }
 
-    pub fn init<P: AsRef<Path>>(path: P) -> lmdb::Result<Self> {
-        let env = Self::open_env(path)?;
-        let input = unsafe {
-            DB::create(&env, Some("input"), DatabaseFlags::INTEGER_KEY)?
-        };
-        let output = unsafe {
-            DB::create(&env, Some("output"), DatabaseFlags::INTEGER_KEY)?
-        };
-
-        Ok(Self::new(env, input, output))
-    }
-
     pub fn open<P: AsRef<Path>>(path: P) -> lmdb::Result<Self> {
         let env = Self::open_env(path)?;
         let input = unsafe { DB::open(&env, Some("input"))?  };
@@ -84,17 +72,17 @@ impl StateDB {
         Ok(Self::new(env, input, output))
     }
 
-    fn update_txn(&self, txn: &mut RwTransaction, key: u64, input: &State, output: &State)
+    fn update_txn(&self, txn: &mut RwTransaction, key: impl AsRef<[u8]>, input: &State, output: &State)
         -> Result<(), DBError>
     {
         let flags = WriteFlags::empty();
-        let k = key.to_ne_bytes();
+        let k = key.as_ref();
         self.input.put(txn, &k, input, flags)?;
         self.output.put(txn, &k, output, flags)?;
         Ok(())
     }
 
-    pub fn update(&self, key: u64, input: &State, output: &State) 
+    pub fn update(&self, key: impl AsRef<[u8]>, input: &State, output: &State)
         -> Result<(), DBError>
     {
         let mut txn = self.env.begin_rw_txn().map_err(StateAdapter::from_db_err)?;
@@ -103,11 +91,11 @@ impl StateDB {
         txn.commit().map_err(StateAdapter::from_db_err)
     }
 
-    fn get(&self, db: &DB<StateAdapter>, key: u64)
+    fn get(&self, db: &DB<StateAdapter>, key: impl AsRef<[u8]>)
         -> Result<Option<LMDBorrow<RoTransaction, Archived<State>>>, DBError> 
     {
         let txn = self.env.begin_ro_txn().map_err(StateAdapter::from_db_err)?;
-        if let Some(state) = db.get(&txn, &key.to_ne_bytes())? {
+        if let Some(state) = db.get(&txn, &key.as_ref())? {
             let ptr = state.into();
             Ok(Some(unsafe { LMDBorrow::new(ptr, txn) }))
         } else {
@@ -116,46 +104,14 @@ impl StateDB {
     }
 
     #[inline(always)]
-    pub fn get_input(&self, key: u64)
+    pub fn get_input(&self, key: impl AsRef<[u8]>)
         -> Result<Option<LMDBorrow<RoTransaction, Archived<State>>>, DBError> 
     { self.get(&self.input, key) }
 
     #[inline(always)]
-    pub fn get_output(&self, key: u64)
+    pub fn get_output(&self, key: impl AsRef<[u8]>)
         -> Result<Option<LMDBorrow<RoTransaction, Archived<State>>>, DBError> 
     { self.get(&self.output, key) }
-
-    pub fn accessor(&self, key: u64) -> StateAccessor {
-        StateAccessor::new(key, self.clone())
-    }
-}
-
-#[derive(Debug)]
-pub struct StateAccessor {
-    key: u64,
-    db: StateDB
-}
-
-impl StateAccessor {
-    pub fn new(key: u64, db: StateDB) -> Self {
-        Self { key, db }
-    }
-
-    pub fn get_input(&self)
-        -> Result<Option<LMDBorrow<RoTransaction, Archived<State>>>, DBError>
-    {
-        self.db.get_input(self.key)
-    }
-
-    pub fn get_output(&self)
-        -> Result<Option<LMDBorrow<RoTransaction, Archived<State>>>, DBError>
-    {
-        self.db.get_output(self.key)
-    }
-
-    pub fn set(&self, input: &State, output: &State) -> Result<(), DBError> {
-        self.db.update(self.key, input, output)
-    }
 }
 
 #[cfg(test)]
@@ -171,7 +127,7 @@ mod tests {
         let tmpdir = tempfile::tempdir().unwrap();
         let mut tmppath = tmpdir.path().to_owned();
         tmppath.push("db");
-        let db = StateDB::init(tmppath).unwrap();
+        let db = StateDB::create(tmppath).unwrap();
         let b = State::build()
             .add(OID_COLOUR.clone(), Box::new(Vec3u8 { a: 1, b: 2, c: 3}))
             .add(OID_POWERED.clone(), Box::new(true))

bffhd/resources/state/mod.rs

@@ -16,159 +16,72 @@ use rkyv::{
     out_field,
     Serialize,
 };
-use serde::de::{Error, MapAccess};
+use serde::de::{Error, MapAccess, Unexpected};
 use serde::Deserializer;
 use serde::ser::SerializeMap;
 
 use value::{RegisteredImpl, SerializeValue};
+use crate::MachineState;
+use crate::resources::modules::fabaccess::OID_VALUE;
 
 use crate::utils::oid::ObjectIdentifier;
-use crate::resources::state::value::{DynOwnedVal, DynVal, TypeOid, };
+use crate::resources::state::value::{DynOwnedVal, DynVal, TypeOid, Value};
 
 pub mod value;
 pub mod db;
 
-#[derive(serde::Serialize, serde::Deserialize)]
 #[derive(Archive, Serialize, Deserialize)]
-#[derive(Clone, PartialEq)]
+#[derive(Clone, PartialEq, Eq)]
 #[archive_attr(derive(Debug))]
-/// State object of a resources
-///
-/// This object serves three functions:
-/// 1. it is constructed by modification via Claims or via internal resources logic
-/// 2. it is serializable and storable in the database
-/// 3. it is sendable and forwarded to all Actors and Notifys
 pub struct State {
-    pub hash: u64,
+    pub inner: MachineState,
-    pub inner: Vec<OwnedEntry>,
 }
 
-impl State {
-    pub fn build() -> StateBuilder {
-        StateBuilder::new()
-    }
-    pub fn hash(&self) -> u64 {
-        self.hash
-    }
-}
-
-impl PartialEq<Archived<State>> for State {
-    fn eq(&self, other: &Archived<Self>) -> bool {
-        self.hash == other.hash
-    }
-}
-
-impl Eq for State {}
-
 impl fmt::Debug for State {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         let mut sf = f.debug_struct("State");
-        for OwnedEntry { oid, val } in self.inner.iter() {
+        //for Entry { oid, val } in self.inner.iter() {
-            let k: String = oid.into();
+        let k: String = OID_VALUE.deref().into();
-            sf.field(k.as_ref(), val);
+        sf.field(k.as_ref(), &self.inner);
-        }
+        //}
         sf.finish()
     }
 }
 
-#[derive(Debug)]
+impl serde::Serialize for State {
-pub struct StateBuilder {
-    hasher: DefaultHasher,
-    inner: Vec<OwnedEntry>
-}
-
-impl StateBuilder {
-    pub fn new() -> Self {
-        let hasher = DefaultHasher::new();
-        Self { inner: Vec::new(), hasher }
-    }
-
-    pub fn finish(self) -> State {
-        State {
-            hash: self.hasher.finish(),
-            inner: self.inner,
-        }
-    }
-
-    /// Add key-value pair to the State being built.
-    ///
-    /// We have to use this split system here because type erasure prevents us from limiting values
-    /// to `Hash`. Specifically, you can't have a trait object of `Hash` because `Hash` depends on
-    /// `Self`. In this function however the compiler still knows the exact type of `V` and can
-    /// call statically call its `hash` method.
-    pub fn add<V>(mut self, oid: ObjectIdentifier, val: Box<V>) -> Self
-        where V: SerializeValue + Hash + Archive,
-              Archived<V>: TypeOid + RegisteredImpl,
-    {
-    // Hash before creating the StateEntry struct which removes the type information
-        oid.hash(&mut self.hasher);
-        val.hash(&mut self.hasher);
-        self.inner.push(OwnedEntry { oid, val });
-
-        self
-    }
-}
-
-#[derive(Debug)]
-pub struct Entry<'a> {
-    pub oid: &'a ObjectIdentifier,
-    pub val: &'a dyn SerializeValue,
-}
-
-#[derive(Debug, Clone, Archive, Serialize, Deserialize)]
-#[archive_attr(derive(Debug))]
-pub struct OwnedEntry {
-    pub oid: ObjectIdentifier,
-    pub val: Box<dyn SerializeValue>,
-}
-
-impl PartialEq for OwnedEntry {
-    fn eq(&self, other: &Self) -> bool {
-        self.oid == other.oid && self.val.dyn_eq(other.val.as_value())
-    }
-}
-
-impl<'a> serde::Serialize for Entry<'a> {
     fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
         where S: serde::Serializer
     {
         let mut ser = serializer.serialize_map(Some(1))?;
-        ser.serialize_entry(&self.oid, &DynVal(self.val))?;
+        ser.serialize_entry(OID_VALUE.deref(), &self.inner)?;
         ser.end()
     }
 }
-
+impl<'de> serde::Deserialize<'de> for State {
-impl serde::Serialize for OwnedEntry {
-    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
-        where S: serde::Serializer
-    {
-        let mut ser = serializer.serialize_map(Some(1))?;
-        ser.serialize_entry(&self.oid, &DynVal(self.val.deref()))?;
-        ser.end()
-    }
-}
-impl<'de> serde::Deserialize<'de> for OwnedEntry {
     fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
         where D: Deserializer<'de>
     {
-        deserializer.deserialize_map(OwnedEntryVisitor)
+        deserializer.deserialize_map(StateVisitor)
     }
 }
 
-struct OwnedEntryVisitor;
+struct StateVisitor;
-impl<'de> serde::de::Visitor<'de> for OwnedEntryVisitor {
+impl<'de> serde::de::Visitor<'de> for StateVisitor {
-    type Value = OwnedEntry;
+    type Value = State;
 
     fn expecting(&self, formatter: &mut Formatter) -> fmt::Result {
-        write!(formatter, "an one entry map from OID to some value object")
+        write!(formatter, "a map from OIDs to value objects")
     }
 
     fn visit_map<A: MapAccess<'de>>(self, mut map: A) -> Result<Self::Value, A::Error>
     {
         let oid: ObjectIdentifier = map.next_key()?
             .ok_or(A::Error::missing_field("oid"))?;
-        let val: DynOwnedVal = map.next_value()?;
+        if oid != *OID_VALUE.deref() {
-        Ok(OwnedEntry { oid, val: val.0 })
+            return Err(A::Error::invalid_value(Unexpected::Other("Unknown OID"), &"OID of fabaccess state"))
+        }
+        let val: MachineState = map.next_value()?;
+        Ok(State { inner: val })
     }
 }
 

bffhd/resources/state/value.rs

@@ -276,8 +276,8 @@ impl Clone for Box<dyn SerializeValue> {
 }
 
 #[ptr_meta::pointee]
-pub trait DeserializeValue: Value + DeserializeDynOid {}
+pub trait DeserializeValue: DeserializeDynOid {}
-impl<T: Value + DeserializeDynOid> DeserializeValue for T {}
+impl<T: DeserializeDynOid> DeserializeValue for T {}
 impl ArchivePointee for dyn DeserializeValue {
     type ArchivedMetadata = ArchivedValueMetadata;
 

bin/bffhd/main.rs

@@ -1,5 +1,5 @@
 use clap::{Arg, Command};
-use diflouroborane::db::{Databases, Dump};
+use diflouroborane::db::Dump;
 use diflouroborane::{config, Diflouroborane, error::Error};
 use std::net::ToSocketAddrs;
 use std::os::unix::prelude::AsRawFd;