new request/reponse API

satrs-minisim/src/acs.rs

@@ -7,7 +7,7 @@ use asynchronix::{
 use satrs::power::SwitchStateBinary;
 use satrs_minisim::{
     acs::{MgmReply, MgmSensorValues, MgtDipole, MgtHkSet, MgtReply, MGT_GEN_MAGNETIC_FIELD},
-    SimReply, SimTarget,
+    SimReply,
 };
 
 use crate::time::current_millis;
@@ -54,14 +54,10 @@ impl MagnetometerModel {
 
     pub async fn send_sensor_values(&mut self, _: (), scheduler: &Scheduler<Self>) {
         self.reply_sender
-            .send(SimReply::new(
-                SimTarget::Mgm,
-                MgmReply {
-                    switch_state: self.switch_state,
-                    sensor_values: self
-                        .calculate_current_mgm_tuple(current_millis(scheduler.time())),
-                },
-            ))
+            .send(SimReply::new(MgmReply {
+                switch_state: self.switch_state,
+                sensor_values: self.calculate_current_mgm_tuple(current_millis(scheduler.time())),
+            }))
             .expect("sending MGM sensor values failed");
     }
 
@@ -149,12 +145,11 @@ impl MagnetorquerModel {
     }
 
     pub fn send_housekeeping_data(&mut self) {
-        let mgt_reply = MgtReply::Hk(MgtHkSet {
-            dipole: self.torque_dipole,
-            torquing: self.torquing,
-        });
         self.reply_sender
-            .send(SimReply::new(SimTarget::Mgt, mgt_reply))
+            .send(SimReply::new(MgtReply::Hk(MgtHkSet {
+                dipole: self.torque_dipole,
+                torquing: self.torquing,
+            })))
             .unwrap();
     }
 
@@ -186,7 +181,7 @@ pub mod tests {
     use satrs_minisim::{
         acs::{MgmReply, MgmRequest, MgtDipole, MgtHkSet, MgtReply, MgtRequest},
         eps::PcduSwitch,
-        SimRequest, SimTarget,
+        SerializableSimMsgPayload, SimMessageProvider, SimRequest, SimTarget,
     };
 
     use crate::{eps::tests::switch_device_on, test_helpers::SimTestbench};
@@ -194,8 +189,7 @@ pub mod tests {
     #[test]
     fn test_basic_mgm_request() {
         let mut sim_testbench = SimTestbench::new();
-        let mgm_request = MgmRequest::RequestSensorData;
-        let request = SimRequest::new(SimTarget::Mgm, mgm_request);
+        let request = SimRequest::new(MgmRequest::RequestSensorData);
         sim_testbench
             .send_request(request)
             .expect("sending MGM request failed");
@@ -205,7 +199,7 @@ pub mod tests {
         assert!(sim_reply.is_some());
         let sim_reply = sim_reply.unwrap();
         assert_eq!(sim_reply.target(), SimTarget::Mgm);
-        let reply: MgmReply = serde_json::from_str(sim_reply.reply())
+        let reply = MgmReply::from_sim_message(&sim_reply)
             .expect("failed to deserialize MGM sensor values");
         assert_eq!(reply.switch_state, SwitchStateBinary::Off);
         assert_eq!(reply.sensor_values.x, 0.0);
@@ -218,8 +212,7 @@ pub mod tests {
         let mut sim_testbench = SimTestbench::new();
         switch_device_on(&mut sim_testbench, PcduSwitch::Mgm);
 
-        let mgm_request = MgmRequest::RequestSensorData;
-        let mut request = SimRequest::new(SimTarget::Mgm, mgm_request);
+        let mut request = SimRequest::new(MgmRequest::RequestSensorData);
         sim_testbench
             .send_request(request)
             .expect("sending MGM request failed");
@@ -229,12 +222,11 @@ pub mod tests {
         assert!(sim_reply_res.is_some());
         let mut sim_reply = sim_reply_res.unwrap();
         assert_eq!(sim_reply.target(), SimTarget::Mgm);
-        let first_reply: MgmReply = serde_json::from_str(sim_reply.reply())
+        let first_reply = MgmReply::from_sim_message(&sim_reply)
             .expect("failed to deserialize MGM sensor values");
-        let mgm_request = MgmRequest::RequestSensorData;
         sim_testbench.step_by(Duration::from_millis(50));
 
-        request = SimRequest::new(SimTarget::Mgm, mgm_request);
+        request = SimRequest::new(MgmRequest::RequestSensorData);
         sim_testbench
             .send_request(request)
             .expect("sending MGM request failed");
@@ -244,7 +236,7 @@ pub mod tests {
         assert!(sim_reply_res.is_some());
         sim_reply = sim_reply_res.unwrap();
 
-        let second_reply: MgmReply = serde_json::from_str(sim_reply.reply())
+        let second_reply = MgmReply::from_sim_message(&sim_reply)
             .expect("failed to deserialize MGM sensor values");
         // Check that the values are changing.
         assert!(first_reply != second_reply);
@@ -253,8 +245,7 @@ pub mod tests {
     #[test]
     fn test_basic_mgt_request_is_off() {
         let mut sim_testbench = SimTestbench::new();
-        let mgt_request = MgtRequest::RequestHk;
-        let request = SimRequest::new(SimTarget::Mgt, mgt_request);
+        let request = SimRequest::new(MgtRequest::RequestHk);
         sim_testbench
             .send_request(request)
             .expect("sending MGM request failed");
@@ -268,8 +259,8 @@ pub mod tests {
     fn test_basic_mgt_request_is_on() {
         let mut sim_testbench = SimTestbench::new();
         switch_device_on(&mut sim_testbench, PcduSwitch::Mgt);
-        let mgt_request = MgtRequest::RequestHk;
-        let request = SimRequest::new(SimTarget::Mgt, mgt_request);
+        let request = SimRequest::new(MgtRequest::RequestHk);
+
         sim_testbench
             .send_request(request)
             .expect("sending MGM request failed");
@@ -278,7 +269,7 @@ pub mod tests {
         let sim_reply_res = sim_testbench.try_receive_next_reply();
         assert!(sim_reply_res.is_some());
         let sim_reply = sim_reply_res.unwrap();
-        let mgt_reply: MgtReply = serde_json::from_str(sim_reply.reply())
+        let mgt_reply = MgtReply::from_sim_message(&sim_reply)
             .expect("failed to deserialize MGM sensor values");
         match mgt_reply {
             MgtReply::Hk(hk) => {
@@ -290,8 +281,7 @@ pub mod tests {
     }
 
     fn check_mgt_hk(sim_testbench: &mut SimTestbench, expected_hk_set: MgtHkSet) {
-        let mgt_request = MgtRequest::RequestHk;
-        let request = SimRequest::new(SimTarget::Mgt, mgt_request);
+        let request = SimRequest::new(MgtRequest::RequestHk);
         sim_testbench
             .send_request(request)
             .expect("sending MGM request failed");
@@ -300,7 +290,7 @@ pub mod tests {
         let sim_reply_res = sim_testbench.try_receive_next_reply();
         assert!(sim_reply_res.is_some());
         let sim_reply = sim_reply_res.unwrap();
-        let mgt_reply: MgtReply = serde_json::from_str(sim_reply.reply())
+        let mgt_reply = MgtReply::from_sim_message(&sim_reply)
             .expect("failed to deserialize MGM sensor values");
         match mgt_reply {
             MgtReply::Hk(hk) => {
@@ -319,11 +309,10 @@ pub mod tests {
             y: 200,
             z: 1000,
         };
-        let mgt_request = MgtRequest::ApplyTorque {
+        let request = SimRequest::new(MgtRequest::ApplyTorque {
             duration: Duration::from_millis(100),
             dipole: commanded_dipole,
-        };
-        let request = SimRequest::new(SimTarget::Mgt, mgt_request);
+        });
         sim_testbench
             .send_request(request)
             .expect("sending MGM request failed");

satrs-minisim/src/controller.rs

@@ -7,7 +7,8 @@ use asynchronix::{
 use satrs_minisim::{
     acs::{MgmRequest, MgtRequest},
     eps::PcduRequest,
-    RequestError, SimCtrlReply, SimCtrlRequest, SimReply, SimRequest, SimTarget,
+    SerializableSimMsgPayload, SimCtrlReply, SimCtrlRequest, SimMessageProvider, SimReply,
+    SimRequest, SimRequestError, SimTarget,
 };
 
 use crate::{
@@ -86,19 +87,19 @@ impl SimController {
         }
     }
 
-    fn handle_ctrl_request(&mut self, request: &SimRequest) -> serde_json::Result<()> {
-        let sim_ctrl_request: SimCtrlRequest = serde_json::from_str(request.request())?;
+    fn handle_ctrl_request(&mut self, request: &SimRequest) -> Result<(), SimRequestError> {
+        let sim_ctrl_request = SimCtrlRequest::from_sim_message(request)?;
         match sim_ctrl_request {
             SimCtrlRequest::Ping => {
                 self.reply_sender
-                    .send(SimReply::new(SimTarget::SimCtrl, SimCtrlReply::Pong))
+                    .send(SimReply::new(SimCtrlReply::Pong))
                     .expect("sending reply from sim controller failed");
             }
         }
         Ok(())
     }
-    fn handle_mgm_request(&mut self, request: &SimRequest) -> serde_json::Result<()> {
-        let mgm_request: MgmRequest = serde_json::from_str(request.request())?;
+    fn handle_mgm_request(&mut self, request: &SimRequest) -> Result<(), SimRequestError> {
+        let mgm_request = MgmRequest::from_sim_message(request)?;
         match mgm_request {
             MgmRequest::RequestSensorData => {
                 self.simulation.send_event(
@@ -111,8 +112,8 @@ impl SimController {
         Ok(())
     }
 
-    fn handle_pcdu_request(&mut self, request: &SimRequest) -> serde_json::Result<()> {
-        let pcdu_request: PcduRequest = serde_json::from_str(request.request())?;
+    fn handle_pcdu_request(&mut self, request: &SimRequest) -> Result<(), SimRequestError> {
+        let pcdu_request = PcduRequest::from_sim_message(request)?;
         match pcdu_request {
             PcduRequest::RequestSwitchInfo => {
                 self.simulation
@@ -129,8 +130,8 @@ impl SimController {
         Ok(())
     }
 
-    fn handle_mgt_request(&mut self, request: &SimRequest) -> serde_json::Result<()> {
-        let mgt_request: MgtRequest = serde_json::from_str(request.request())?;
+    fn handle_mgt_request(&mut self, request: &SimRequest) -> Result<(), SimRequestError> {
+        let mgt_request = MgtRequest::from_sim_message(request)?;
         match mgt_request {
             MgtRequest::ApplyTorque { duration, dipole } => self.simulation.send_event(
                 MagnetorquerModel::apply_torque,
@@ -148,7 +149,7 @@ impl SimController {
 
     fn handle_invalid_request_with_valid_target(
         &self,
-        error: serde_json::Error,
+        error: SimRequestError,
         request: &SimRequest,
     ) {
         log::warn!(
@@ -157,10 +158,7 @@ impl SimController {
             error
         );
         self.reply_sender
-            .send(SimReply::new(
-                SimTarget::SimCtrl,
-                SimCtrlReply::from(RequestError::TargetRequestMissmatch(request.clone())),
-            ))
+            .send(SimReply::new(SimCtrlReply::from(error)))
             .expect("sending reply from sim controller failed");
     }
 }
@@ -174,8 +172,7 @@ mod tests {
     #[test]
     fn test_basic_ping() {
         let mut sim_testbench = SimTestbench::new();
-        let sim_ctrl_request = SimCtrlRequest::Ping;
-        let request = SimRequest::new(SimTarget::SimCtrl, sim_ctrl_request);
+        let request = SimRequest::new(SimCtrlRequest::Ping);
         sim_testbench
             .send_request(request)
             .expect("sending sim ctrl request failed");
@@ -185,13 +182,8 @@ mod tests {
         assert!(sim_reply.is_some());
         let sim_reply = sim_reply.unwrap();
         assert_eq!(sim_reply.target(), SimTarget::SimCtrl);
-        let reply: SimCtrlReply = serde_json::from_str(sim_reply.reply())
+        let reply = SimCtrlReply::from_sim_message(&sim_reply)
             .expect("failed to deserialize MGM sensor values");
         assert_eq!(reply, SimCtrlReply::Pong);
     }
-
-    #[test]
-    fn test_invalid_request() {
-        // TODO: Implement this test. Check for the expected reply.
-    }
 }

satrs-minisim/src/eps.rs

@@ -7,7 +7,7 @@ use asynchronix::{
 use satrs::power::SwitchStateBinary;
 use satrs_minisim::{
     eps::{PcduReply, PcduSwitch, SwitchMap},
-    SimReply, SimTarget,
+    SimReply,
 };
 
 pub const SWITCH_INFO_DELAY_MS: u64 = 10;
@@ -44,8 +44,7 @@ impl PcduModel {
     }
 
     pub fn send_switch_info(&mut self) {
-        let switch_info = PcduReply::SwitchInfo(self.switcher_map.clone());
-        let reply = SimReply::new(SimTarget::Pcdu, switch_info);
+        let reply = SimReply::new(PcduReply::SwitchInfo(self.switcher_map.clone()));
         self.reply_sender.send(reply).unwrap();
     }
 
@@ -76,7 +75,9 @@ pub(crate) mod tests {
     use super::*;
     use std::time::Duration;
 
-    use satrs_minisim::{eps::PcduRequest, SimRequest, SimTarget};
+    use satrs_minisim::{
+        eps::PcduRequest, SerializableSimMsgPayload, SimMessageProvider, SimRequest, SimTarget,
+    };
 
     use crate::test_helpers::SimTestbench;
 
@@ -85,11 +86,10 @@ pub(crate) mod tests {
         switch: PcduSwitch,
         target: SwitchStateBinary,
     ) {
-        let pcdu_request = PcduRequest::SwitchDevice {
+        let request = SimRequest::new(PcduRequest::SwitchDevice {
             switch,
             state: target,
-        };
-        let request = SimRequest::new(SimTarget::Pcdu, pcdu_request);
+        });
         sim_testbench
             .send_request(request)
             .expect("sending MGM switch request failed");
@@ -113,8 +113,7 @@ pub(crate) mod tests {
     }
 
     fn check_switch_state(sim_testbench: &mut SimTestbench, expected_switch_map: &SwitchMap) {
-        let pcdu_request = PcduRequest::RequestSwitchInfo;
-        let request = SimRequest::new(SimTarget::Pcdu, pcdu_request);
+        let request = SimRequest::new(PcduRequest::RequestSwitchInfo);
         sim_testbench
             .send_request(request)
             .expect("sending MGM request failed");
@@ -124,7 +123,7 @@ pub(crate) mod tests {
         assert!(sim_reply.is_some());
         let sim_reply = sim_reply.unwrap();
         assert_eq!(sim_reply.target(), SimTarget::Pcdu);
-        let pcdu_reply: PcduReply = serde_json::from_str(&sim_reply.reply())
+        let pcdu_reply = PcduReply::from_sim_message(&sim_reply)
             .expect("failed to deserialize PCDU switch info");
         match pcdu_reply {
             PcduReply::SwitchInfo(switch_map) => {
@@ -144,8 +143,7 @@ pub(crate) mod tests {
     #[test]
     fn test_pcdu_switcher_request() {
         let mut sim_testbench = SimTestbench::new();
-        let pcdu_request = PcduRequest::RequestSwitchInfo;
-        let request = SimRequest::new(SimTarget::Pcdu, pcdu_request);
+        let request = SimRequest::new(PcduRequest::RequestSwitchInfo);
         sim_testbench
             .send_request(request)
             .expect("sending MGM request failed");
@@ -160,7 +158,7 @@ pub(crate) mod tests {
         assert!(sim_reply.is_some());
         let sim_reply = sim_reply.unwrap();
         assert_eq!(sim_reply.target(), SimTarget::Pcdu);
-        let pcdu_reply: PcduReply = serde_json::from_str(&sim_reply.reply())
+        let pcdu_reply = PcduReply::from_sim_message(&sim_reply)
             .expect("failed to deserialize PCDU switch info");
         match pcdu_reply {
             PcduReply::SwitchInfo(switch_map) => {

satrs-minisim/src/lib.rs

@@ -1,4 +1,4 @@
-use serde::{Deserialize, Serialize};
+use serde::{de::DeserializeOwned, Deserialize, Serialize};
 
 #[derive(Debug, Copy, Clone, PartialEq, Eq, Serialize, Deserialize)]
 pub enum SimTarget {
@@ -9,48 +9,100 @@ pub enum SimTarget {
 }
 
 #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
-pub struct SimRequest {
-    target: SimTarget,
-    request: String,
+pub struct SimMessage {
+    pub target: SimTarget,
+    pub payload: String,
 }
 
-impl SimRequest {
-    pub fn new<T: Serialize>(device: SimTarget, request: T) -> Self {
-        Self {
-            target: device,
-            request: serde_json::to_string(&request).unwrap(),
-        }
-    }
-
-    pub fn target(&self) -> SimTarget {
-        self.target
-    }
-
-    pub fn request(&self) -> &String {
-        &self.request
-    }
+/// A generic simulation request type. Right now, the payload data is expected to be
+/// JSON, which might be changed in the future.
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+pub struct SimRequest {
+    inner: SimMessage,
 }
 
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+pub enum SimMessageType {
+    Request,
+    Reply,
+}
+
+/// Generic trait implemented by simulation request or reply payloads. It ties the request or
+/// reply to a specific target and provides an API which does boilerplate tasks like checking the
+/// validity of the target.
+pub trait SerializableSimMsgPayload<P: SimMessageProvider>:
+    Serialize + DeserializeOwned + Sized
+{
+    const TARGET: SimTarget;
+
+    fn from_sim_message(sim_message: &P) -> Result<Self, SimMessageError<P>> {
+        if sim_message.target() == Self::TARGET {
+            return Ok(serde_json::from_str(sim_message.payload())?);
+        }
+        Err(SimMessageError::TargetRequestMissmatch(sim_message.clone()))
+    }
+}
+
+pub trait SimMessageProvider: Serialize + DeserializeOwned + Clone + Sized {
+    fn msg_type(&self) -> SimMessageType;
+    fn target(&self) -> SimTarget;
+    fn payload(&self) -> &String;
+    fn from_raw_data(data: &[u8]) -> serde_json::Result<Self> {
+        serde_json::from_slice(data)
+    }
+}
+
+impl SimRequest {
+    pub fn new<T: SerializableSimMsgPayload<SimRequest>>(serializable_request: T) -> Self {
+        Self {
+            inner: SimMessage {
+                target: T::TARGET,
+                payload: serde_json::to_string(&serializable_request).unwrap(),
+            },
+        }
+    }
+}
+
+impl SimMessageProvider for SimRequest {
+    fn target(&self) -> SimTarget {
+        self.inner.target
+    }
+    fn payload(&self) -> &String {
+        &self.inner.payload
+    }
+
+    fn msg_type(&self) -> SimMessageType {
+        SimMessageType::Request
+    }
+}
+
+/// A generic simulation reply type. Right now, the payload data is expected to be
+/// JSON, which might be changed inthe future.
 #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
 pub struct SimReply {
-    target: SimTarget,
-    reply: String,
+    inner: SimMessage,
 }
 
 impl SimReply {
-    pub fn new<T: Serialize>(device: SimTarget, reply: T) -> Self {
+    pub fn new<T: SerializableSimMsgPayload<SimReply>>(serializable_reply: T) -> Self {
         Self {
-            target: device,
-            reply: serde_json::to_string(&reply).unwrap(),
+            inner: SimMessage {
+                target: T::TARGET,
+                payload: serde_json::to_string(&serializable_reply).unwrap(),
+            },
         }
     }
+}
 
-    pub fn target(&self) -> SimTarget {
-        self.target
+impl SimMessageProvider for SimReply {
+    fn target(&self) -> SimTarget {
+        self.inner.target
     }
-
-    pub fn reply(&self) -> &String {
-        &self.reply
+    fn payload(&self) -> &String {
+        &self.inner.payload
+    }
+    fn msg_type(&self) -> SimMessageType {
+        SimMessageType::Reply
     }
 }
 
@@ -59,19 +111,37 @@ pub enum SimCtrlRequest {
     Ping,
 }
 
+impl SerializableSimMsgPayload<SimRequest> for SimCtrlRequest {
+    const TARGET: SimTarget = SimTarget::SimCtrl;
+}
+
+pub type SimReplyError = SimMessageError<SimReply>;
+pub type SimRequestError = SimMessageError<SimRequest>;
+
 #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
-pub enum RequestError {
-    TargetRequestMissmatch(SimRequest),
+pub enum SimMessageError<P> {
+    SerdeJson(String),
+    TargetRequestMissmatch(P),
+}
+
+impl<P> From<serde_json::Error> for SimMessageError<P> {
+    fn from(error: serde_json::Error) -> SimMessageError<P> {
+        SimMessageError::SerdeJson(error.to_string())
+    }
 }
 
 #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
 pub enum SimCtrlReply {
     Pong,
-    InvalidRequest(RequestError),
+    InvalidRequest(SimRequestError),
 }
 
-impl From<RequestError> for SimCtrlReply {
-    fn from(error: RequestError) -> Self {
+impl SerializableSimMsgPayload<SimReply> for SimCtrlReply {
+    const TARGET: SimTarget = SimTarget::SimCtrl;
+}
+
+impl From<SimRequestError> for SimCtrlReply {
+    fn from(error: SimRequestError) -> Self {
         SimCtrlReply::InvalidRequest(error)
     }
 }
@@ -99,10 +169,18 @@ pub mod eps {
         RequestSwitchInfo,
     }
 
+    impl SerializableSimMsgPayload<SimRequest> for PcduRequest {
+        const TARGET: SimTarget = SimTarget::Pcdu;
+    }
+
     #[derive(Debug, Clone, Serialize, Deserialize)]
     pub enum PcduReply {
         SwitchInfo(SwitchMap),
     }
+
+    impl SerializableSimMsgPayload<SimReply> for PcduReply {
+        const TARGET: SimTarget = SimTarget::Pcdu;
+    }
 }
 
 pub mod acs {
@@ -117,6 +195,10 @@ pub mod acs {
         RequestSensorData,
     }
 
+    impl SerializableSimMsgPayload<SimRequest> for MgmRequest {
+        const TARGET: SimTarget = SimTarget::Mgm;
+    }
+
     // Normally, small magnetometers generate their output as a signed 16 bit raw format or something
     // similar which needs to be converted to a signed float value with physical units. We will
     // simplify this now and generate the signed float values directly.
@@ -133,6 +215,10 @@ pub mod acs {
         pub sensor_values: MgmSensorValues,
     }
 
+    impl SerializableSimMsgPayload<SimReply> for MgmReply {
+        const TARGET: SimTarget = SimTarget::Mgm;
+    }
+
     pub const MGT_GEN_MAGNETIC_FIELD: MgmSensorValues = MgmSensorValues {
         x: 0.03,
         y: -0.03,
@@ -161,6 +247,10 @@ pub mod acs {
         RequestHk,
     }
 
+    impl SerializableSimMsgPayload<SimRequest> for MgtRequest {
+        const TARGET: SimTarget = SimTarget::Mgt;
+    }
+
     #[derive(Debug, Copy, Clone, PartialEq, Eq, Serialize, Deserialize)]
     pub struct MgtHkSet {
         pub dipole: MgtDipole,
@@ -173,6 +263,10 @@ pub mod acs {
         Nak(MgtRequestType),
         Hk(MgtHkSet),
     }
+
+    impl SerializableSimMsgPayload<SimReply> for MgtReply {
+        const TARGET: SimTarget = SimTarget::Mgm;
+    }
 }
 
 pub mod udp {
@@ -244,3 +338,46 @@ pub mod udp {
         }
     }
 }
+
+#[cfg(test)]
+pub mod tests {
+    use super::*;
+
+    #[derive(Debug, Copy, Clone, PartialEq, Eq, Serialize, Deserialize)]
+    pub enum DummyRequest {
+        Ping,
+    }
+
+    impl SerializableSimMsgPayload<SimRequest> for DummyRequest {
+        const TARGET: SimTarget = SimTarget::SimCtrl;
+    }
+
+    #[derive(Debug, Copy, Clone, PartialEq, Eq, Serialize, Deserialize)]
+    pub enum DummyReply {
+        Pong,
+    }
+
+    impl SerializableSimMsgPayload<SimReply> for DummyReply {
+        const TARGET: SimTarget = SimTarget::SimCtrl;
+    }
+
+    #[test]
+    fn test_basic_request() {
+        let sim_request = SimRequest::new(DummyRequest::Ping);
+        assert_eq!(sim_request.target(), SimTarget::SimCtrl);
+        assert_eq!(sim_request.msg_type(), SimMessageType::Request);
+        let dummy_request =
+            DummyRequest::from_sim_message(&sim_request).expect("deserialization failed");
+        assert_eq!(dummy_request, DummyRequest::Ping);
+    }
+
+    #[test]
+    fn test_basic_reply() {
+        let sim_reply = SimReply::new(DummyReply::Pong);
+        assert_eq!(sim_reply.target(), SimTarget::SimCtrl);
+        assert_eq!(sim_reply.msg_type(), SimMessageType::Reply);
+        let dummy_request =
+            DummyReply::from_sim_message(&sim_reply).expect("deserialization failed");
+        assert_eq!(dummy_request, DummyReply::Pong);
+    }
+}

satrs-minisim/src/udp.rs

@@ -6,7 +6,7 @@ use std::{
     time::Duration,
 };
 
-use satrs_minisim::{SimReply, SimRequest};
+use satrs_minisim::{SimMessageProvider, SimReply, SimRequest};
 
 // A UDP server which handles all TC received by a client application.
 pub struct SimUdpServer {
@@ -90,11 +90,7 @@ impl SimUdpServer {
 
             self.sender_addr = Some(src);
 
-            // Convert the buffer into a string slice and print the message.
-            let req_string = std::str::from_utf8(&self.req_buf[..bytes_read])
-                .expect("Could not write buffer as string");
-            log::info!("Received request from {}: {}", src, req_string);
-            let sim_req: serde_json::Result<SimRequest> = serde_json::from_str(req_string);
+            let sim_req = SimRequest::from_raw_data(&self.req_buf[..bytes_read]);
             if sim_req.is_err() {
                 log::warn!(
                     "received UDP request with invalid format: {}",
@@ -164,7 +160,7 @@ mod tests {
     use satrs_minisim::{
         eps::{PcduReply, PcduRequest},
         udp::{ReceptionError, SimUdpClient},
-        SimCtrlReply, SimCtrlRequest, SimReply, SimRequest, SimTarget,
+        SimCtrlReply, SimCtrlRequest, SimReply, SimRequest,
     };
 
     use crate::eps::tests::get_all_off_switch_map;
@@ -274,7 +270,7 @@ mod tests {
             UdpTestbench::new(true, Some(SERVER_WAIT_TIME_MS), 10)
                 .expect("could not create testbench");
         let server_thread = std::thread::spawn(move || udp_server.run());
-        let sim_request = SimRequest::new(SimTarget::Pcdu, PcduRequest::RequestSwitchInfo);
+        let sim_request = SimRequest::new(PcduRequest::RequestSwitchInfo);
         udp_testbench
             .send_request(&sim_request)
             .expect("sending request failed");
@@ -296,13 +292,10 @@ mod tests {
                 .expect("could not create testbench");
         let server_thread = std::thread::spawn(move || udp_server.run());
         udp_testbench
-            .send_request(&SimRequest::new(SimTarget::SimCtrl, SimCtrlRequest::Ping))
+            .send_request(&SimRequest::new(SimCtrlRequest::Ping))
             .expect("sending request failed");
 
-        let sim_reply = SimReply::new(
-            SimTarget::Pcdu,
-            PcduReply::SwitchInfo(get_all_off_switch_map()),
-        );
+        let sim_reply = SimReply::new(PcduReply::SwitchInfo(get_all_off_switch_map()));
         udp_testbench.send_reply(&sim_reply);
 
         udp_testbench.check_next_sim_reply(&sim_reply);
@@ -323,14 +316,11 @@ mod tests {
         // Send a ping so that the server knows the address of the client.
         // Do not check that the request arrives on the receiver side, is done by other test.
         udp_testbench
-            .send_request(&SimRequest::new(SimTarget::SimCtrl, SimCtrlRequest::Ping))
+            .send_request(&SimRequest::new(SimCtrlRequest::Ping))
             .expect("sending request failed");
 
         // Send a reply to the server, ensure it gets forwarded to the client.
-        let sim_reply = SimReply::new(
-            SimTarget::Pcdu,
-            PcduReply::SwitchInfo(get_all_off_switch_map()),
-        );
+        let sim_reply = SimReply::new(PcduReply::SwitchInfo(get_all_off_switch_map()));
         udp_testbench.send_reply(&sim_reply);
         std::thread::sleep(Duration::from_millis(SERVER_WAIT_TIME_MS));
 
@@ -349,10 +339,7 @@ mod tests {
         let server_thread = std::thread::spawn(move || udp_server.run());
 
         // Send a reply to the server. The client is not connected, so it won't get forwarded.
-        let sim_reply = SimReply::new(
-            SimTarget::Pcdu,
-            PcduReply::SwitchInfo(get_all_off_switch_map()),
-        );
+        let sim_reply = SimReply::new(PcduReply::SwitchInfo(get_all_off_switch_map()));
         udp_testbench.send_reply(&sim_reply);
         std::thread::sleep(Duration::from_millis(10));
 
@@ -360,7 +347,7 @@ mod tests {
 
         // Connect by sending a ping.
         udp_testbench
-            .send_request(&SimRequest::new(SimTarget::SimCtrl, SimCtrlRequest::Ping))
+            .send_request(&SimRequest::new(SimCtrlRequest::Ping))
             .expect("sending request failed");
         std::thread::sleep(Duration::from_millis(SERVER_WAIT_TIME_MS));
 
@@ -379,7 +366,7 @@ mod tests {
         let server_thread = std::thread::spawn(move || udp_server.run());
 
         // The server only caches up to 3 replies.
-        let sim_reply = SimReply::new(SimTarget::SimCtrl, SimCtrlReply::Pong);
+        let sim_reply = SimReply::new(SimCtrlReply::Pong);
         for _ in 0..4 {
             udp_testbench.send_reply(&sim_reply);
         }
@@ -389,7 +376,7 @@ mod tests {
 
         // Connect by sending a ping.
         udp_testbench
-            .send_request(&SimRequest::new(SimTarget::SimCtrl, SimCtrlRequest::Ping))
+            .send_request(&SimRequest::new(SimCtrlRequest::Ping))
             .expect("sending request failed");
         std::thread::sleep(Duration::from_millis(SERVER_WAIT_TIME_MS));