clean up veilid state processing

veilid-cli/src/client_api_connection.rs

@@ -2,7 +2,6 @@ use crate::command_processor::*;
 use crate::veilid_client_capnp::*;
 use veilid_core::xx::*;
 
-use async_std::prelude::*;
 use capnp::capability::Promise;
 use capnp_rpc::{pry, rpc_twoparty_capnp, twoparty, Disconnector, RpcSystem};
 use futures::AsyncReadExt;
@@ -87,6 +86,19 @@ impl ClientApiConnection {
             })),
         }
     }
+    async fn process_veilid_state<'a>(
+        &'a mut self,
+        state: veilid_state::Reader<'a>,
+    ) -> Result<(), String> {
+        let mut inner = self.inner.borrow_mut();
+
+        // Process attachment state
+        let attachment = state.reborrow().get_attachment().map_err(map_to_string)?;
+        let state = attachment.get_state().map_err(map_to_string)?;
+        inner.comproc.update_attachment(state);
+
+        Ok(())
+    }
 
     async fn handle_connection(&mut self) -> Result<(), String> {
         trace!("ClientApiConnection::handle_connection");
@@ -140,11 +152,20 @@ impl ClientApiConnection {
                 ));
         }
 
+        // Send the request and get the state object and the registration object
+        if let Ok(response) = request.send().promise.await {
+            if let Ok(response) = response.get() {
+                if let Ok(_registration) = response.get_registration() {
+                    if let Ok(state) = response.get_state() {
+                        // Set up our state for the first time
+                        if self.process_veilid_state(state).await.is_ok() {
                             // Don't drop the registration
-        rpc_system
-            .try_join(request.send().promise)
-            .await
-            .map_err(map_to_string)?;
+                            rpc_system.await.map_err(map_to_string)?;
+                        }
+                    }
+                }
+            }
+        }
 
         // Drop the server and disconnector too (if we still have it)
         let mut inner = self.inner.borrow_mut();
@@ -169,7 +190,7 @@ impl ClientApiConnection {
             inner
                 .server
                 .as_ref()
-                .ok_or("Not connected, ignoring attach request".to_owned())?
+                .ok_or_else(|| "Not connected, ignoring attach request".to_owned())?
                 .clone()
         };
         let request = server.borrow().attach_request();
@@ -184,7 +205,7 @@ impl ClientApiConnection {
             inner
                 .server
                 .as_ref()
-                .ok_or("Not connected, ignoring detach request".to_owned())?
+                .ok_or_else(|| "Not connected, ignoring detach request".to_owned())?
                 .clone()
         };
         let request = server.borrow().detach_request();
@@ -199,7 +220,7 @@ impl ClientApiConnection {
             inner
                 .server
                 .as_ref()
-                .ok_or("Not connected, ignoring attach request".to_owned())?
+                .ok_or_else(|| "Not connected, ignoring attach request".to_owned())?
                 .clone()
         };
         let request = server.borrow().shutdown_request();
@@ -214,7 +235,7 @@ impl ClientApiConnection {
             inner
                 .server
                 .as_ref()
-                .ok_or("Not connected, ignoring attach request".to_owned())?
+                .ok_or_else(|| "Not connected, ignoring attach request".to_owned())?
                 .clone()
         };
         let mut request = server.borrow().debug_request();

veilid-core/src/attachment_manager.rs

@@ -333,11 +333,6 @@ impl AttachmentManager {
         }
     }
 
-    pub async fn send_state_update(&self) {
-        let attachment_machine = self.inner.lock().attachment_machine.clone();
-        attachment_machine.send_state_update().await;
-    }
-
     pub async fn request_attach(&self) {
         if !self.is_detached() {
             trace!("attach request ignored");
@@ -395,12 +390,10 @@ impl AttachmentManager {
                 } else {
                     return false;
                 }
-            } else {
-                if eventual.await == state {
+            } else if eventual.await == state {
                 break;
             }
         }
-        }
         true
     }
 }

veilid-core/src/callback_state_machine.rs

@@ -68,24 +68,12 @@ where
     // pub fn clear_state_change_callback(&self) {
     //     self.inner.lock().callback = None;
     // }
+
     pub fn state_eventual_instance(&self) -> (T::State, EventualValueCloneFuture<T::State>) {
         let inner = self.inner.lock();
         (inner.state, inner.eventual.instance())
     }
 
-    pub async fn send_state_update(&self) {
-        let (state, callback, eventual) = {
-            let mut inner = self.inner.lock();
-            let eventual =
-                core::mem::replace(&mut inner.eventual, EventualValueClone::<T::State>::new());
-            (inner.state, inner.callback.clone(), eventual)
-        };
-        if let Some(cb) = callback {
-            cb(state, state).await;
-        }
-        eventual.resolve(state).await;
-    }
-
     pub async fn consume(&self, input: &T::Input) -> Result<Option<T::Output>, ()> {
         let current_state = self.inner.lock().state;
 

veilid-server/proto/veilid-client.capnp

@@ -30,7 +30,7 @@ interface Registration {}
 
 interface VeilidServer {
 
-    register @0 (veilidClient: VeilidClient) -> (registration: Registration);
+    register @0 (veilidClient: VeilidClient) -> (registration: Registration, state: VeilidState);
     debug @1 (what: Text) -> (output: Text);
 
     attach @2 ();

veilid-server/src/client_api.rs

@@ -121,6 +121,7 @@ impl veilid_server::Server for VeilidServerImpl {
         mut results: veilid_server::RegisterResults,
     ) -> Promise<(), ::capnp::Error> {
         trace!("VeilidServerImpl::register");
+
         self.registration_map.borrow_mut().registrations.insert(
             self.next_id,
             RegistrationHandle {
@@ -129,16 +130,26 @@ impl veilid_server::Server for VeilidServerImpl {
             },
         );
 
-        results
-            .get()
-            .set_registration(capnp_rpc::new_client(RegistrationImpl::new(
+        let veilid_api = self.veilid_api.clone();
+        let registration = capnp_rpc::new_client(RegistrationImpl::new(
             self.next_id,
             self.registration_map.clone(),
-            )));
-
+        ));
         self.next_id += 1;
 
-        Promise::ok(())
+        Promise::from_future(async move {
+            let state = veilid_api
+                .get_state()
+                .await
+                .map_err(|e| ::capnp::Error::failed(format!("{:?}", e)))?;
+
+            let mut res = results.get();
+            res.set_registration(registration);
+            let rpc_state = res.init_state();
+            convert_state(&state, rpc_state);
+
+            Ok(())
+        })
     }
 
     fn debug(