Change error events to be identified by event type and not by name

Signed-off-by: trivernis <trivernis@protonmail.com>

src/ipc/context.rs

@@ -1,20 +1,20 @@
 use std::collections::HashMap;
 use std::mem;
 use std::ops::{Deref, DerefMut};
-use std::sync::Arc;
 use std::sync::atomic::{AtomicUsize, Ordering};
+use std::sync::Arc;
 
-use tokio::sync::{Mutex, oneshot, RwLock};
-use tokio::sync::oneshot::{Sender, Receiver};
+use tokio::sync::oneshot::{Receiver, Sender};
+use tokio::sync::{oneshot, Mutex, RwLock};
 use tokio::time::Duration;
 use typemap_rev::TypeMap;
 
 use crate::error::{Error, Result};
-use crate::event::Event;
+use crate::event::{Event, EventType};
 use crate::ipc::stream_emitter::{EmitMetadata, StreamEmitter};
+use crate::payload::IntoPayload;
 #[cfg(feature = "serialize")]
 use crate::payload::{DynamicSerializer, SerdePayload};
-use crate::payload::IntoPayload;
 
 pub(crate) type ReplyListeners = Arc<Mutex<HashMap<u64, oneshot::Sender<Event>>>>;
 
@@ -71,12 +71,26 @@ impl Context {
         }
     }
 
-    /// Emits an event with a given payload that can be serialized into bytes
-    pub fn emit<S: AsRef<str>, P: IntoPayload>(
+    /// Emits a raw event. Only for internal use
+    pub(crate) fn emit_raw<P: IntoPayload>(
         &self,
-        name: S,
+        name: &str,
+        namespace: Option<String>,
+        event_type: EventType,
         payload: P,
     ) -> EmitMetadata<P> {
+        self.emitter.emit_raw(
+            self.clone(),
+            self.ref_id.clone(),
+            name,
+            namespace,
+            event_type,
+            payload,
+        )
+    }
+
+    /// Emits an event with a given payload that can be serialized into bytes
+    pub fn emit<S: AsRef<str>, P: IntoPayload>(&self, name: S, payload: P) -> EmitMetadata<P> {
         if let Some(ref_id) = &self.ref_id {
             self.emitter
                 .emit_response(self.clone(), *ref_id, name, payload)

src/ipc/mod.rs

@@ -1,7 +1,8 @@
 use std::collections::HashMap;
 use std::sync::Arc;
 
-use crate::error_event::{ERROR_EVENT_NAME, ErrorEventData};
+use crate::error_event::{ErrorEventData, ERROR_EVENT_NAME};
+use crate::event::EventType;
 use crate::events::event_handler::EventHandler;
 use crate::namespaces::namespace::Namespace;
 use crate::prelude::*;
@@ -60,13 +61,16 @@ fn handle_event(mut ctx: Context, handler: Arc<EventHandler>, event: Event) {
         if let Err(e) = handler.handle_event(&ctx, event).await {
             // emit an error event
             if let Err(e) = ctx
-                .emit(
+                .emit_raw(
                     ERROR_EVENT_NAME,
+                    None,
+                    EventType::Error,
                     ErrorEventData {
                         message: format!("{:?}", e),
                         code: 500,
                     },
-                ).await
+                )
+                .await
             {
                 tracing::error!("Error occurred when sending error response: {:?}", e);
             }

src/ipc/stream_emitter.rs

@@ -13,7 +13,7 @@ use tokio::sync::Mutex;
 use tracing;
 
 use crate::error::{Error, Result};
-use crate::error_event::{ErrorEventData, ERROR_EVENT_NAME};
+use crate::error_event::ErrorEventData;
 use crate::event::EventType;
 use crate::events::event::Event;
 use crate::ipc::context::Context;
@@ -52,7 +52,7 @@ impl StreamEmitter {
     fn _emit<P: IntoPayload>(
         &self,
         ctx: Context,
-        namespace: Option<&str>,
+        namespace: Option<String>,
         event: &str,
         payload: P,
         res_id: Option<u64>,
@@ -62,7 +62,7 @@ impl StreamEmitter {
             ctx,
             self.stream.clone(),
             event.to_string(),
-            namespace.map(|n| n.to_string()),
+            namespace,
             payload,
             res_id,
             event_type,
@@ -98,7 +98,7 @@ impl StreamEmitter {
     ) -> EmitMetadata<P> {
         self._emit(
             ctx,
-            Some(namespace.as_ref()),
+            Some(namespace.as_ref().to_string()),
             event.as_ref(),
             payload,
             None,
@@ -106,6 +106,20 @@ impl StreamEmitter {
         )
     }
 
+    /// Emits a raw event
+    #[inline]
+    pub(crate) fn emit_raw<P: IntoPayload>(
+        &self,
+        ctx: Context,
+        res_id: Option<u64>,
+        event: &str,
+        namespace: Option<String>,
+        event_type: EventType,
+        payload: P,
+    ) -> EmitMetadata<P> {
+        self._emit(ctx, namespace, event, payload, res_id, event_type)
+    }
+
     /// Emits a response to an event
     #[inline]
     pub(crate) fn emit_response<S: AsRef<str>, P: IntoPayload>(
@@ -137,7 +151,7 @@ impl StreamEmitter {
     ) -> EmitMetadata<P> {
         self._emit(
             ctx,
-            Some(namespace.as_ref()),
+            Some(namespace.as_ref().to_string()),
             event.as_ref(),
             payload,
             Some(event_id),
@@ -330,7 +344,7 @@ impl<P: IntoPayload + Send + Sync + 'static> Future for EmitMetadataWithResponse
                         Err(Error::Timeout)
                     }
                 }?;
-                if reply.name() == ERROR_EVENT_NAME {
+                if reply.event_type() == EventType::Error {
                     Err(reply.payload::<ErrorEventData>()?.into())
                 } else {
                     Ok(reply)