fix: database error not correctly propagated (#7)

methods.go

@@ -261,7 +261,7 @@ func (c *Client) send(ctx context.Context, req request) (_ []byte, err error) {
 			return nil, fmt.Errorf("channel closed")
 		}
 
-		return res, nil
+		return res.data, res.err
 	}
 }
 

response.go

@@ -111,11 +111,6 @@ func (c *Client) handleMessage(data []byte) {
 
 	c.logger.DebugContext(c.connCtx, "Received message.", "res", res)
 
-	if res.Error != nil {
-		c.logger.ErrorContext(c.connCtx, "Received error response.", "error", res.Error)
-		return
-	}
-
 	if res.ID == "" {
 		c.handleLiveQuery(res)
 		return
@@ -131,9 +126,14 @@ func (c *Client) handleResult(res *response) {
 		return
 	}
 
+	var err error
+	if res.Error != nil {
+		err = fmt.Errorf("(%d) %s", res.Error.Code, res.Error.Message)
+	}
+
 	select {
 
-	case outCh <- res.Result:
+	case outCh <- &output{data: res.Result, err: err}:
 		return
 
 	case <-c.connCtx.Done():

stores.go

@@ -37,37 +37,42 @@ func (p *bufPool) Put(b *bytes.Buffer) {
 // -- REQUESTS
 //
 
+type output struct {
+	data []byte
+	err  error
+}
+
 type requests struct {
 	store sync.Map
 }
 
-func (r *requests) prepare() (string, <-chan []byte) {
+func (r *requests) prepare() (string, <-chan *output) {
 	key := uuid.New()
-	ch := make(chan []byte)
+	ch := make(chan *output)
 
 	r.store.Store(key.String(), ch)
 
 	return key.String(), ch
 }
 
-func (r *requests) get(key string) (chan<- []byte, bool) {
+func (r *requests) get(key string) (chan<- *output, bool) {
 	val, ok := r.store.Load(key)
 	if !ok {
 		return nil, false
 	}
 
-	return val.(chan []byte), true
+	return val.(chan *output), true
 }
 
 func (r *requests) cleanup(key string) {
 	if ch, ok := r.store.LoadAndDelete(key); ok {
-		close(ch.(chan []byte))
+		close(ch.(chan *output))
 	}
 }
 
 func (r *requests) reset() {
 	r.store.Range(func(key, ch any) bool {
-		close(ch.(chan []byte))
+		close(ch.(chan *output))
 		r.store.Delete(key)
 		return true
 	})