Removed useless ErrNotFound from apiByVidPid

The `apiByVidPid` function now masks the odd behavior of the builder-api
returning an HTTP 404 if the request succeed but the result is empty.

Author: cmaglie

Diff for: commands/board/list.go

@@ -38,15 +38,7 @@ import (
 	"github.com/sirupsen/logrus"
 )
 
-type boardNotFoundError struct{}
-
-func (e *boardNotFoundError) Error() string {
-	return tr("board not found")
-}
-
 var (
-	// ErrNotFound is returned when the API returns 404
-	ErrNotFound = &boardNotFoundError{}
 	vidPidURL   = "https://builder.arduino.cc/v3/boards/byVidPid"
 	validVidPid = regexp.MustCompile(`0[xX][a-fA-F\d]{4}`)
 )
@@ -59,9 +51,6 @@ func cachedAPIByVidPid(vid, pid string) ([]*rpc.BoardListItem, error) {
 		ts := inventory.Store.GetTime(cacheKey + ".ts")
 		if time.Since(ts) < time.Hour*24 {
 			// Use cached response
-			if cachedResp == "ErrNotFound" {
-				return nil, ErrNotFound
-			}
 			if err := json.Unmarshal([]byte(cachedResp), &resp); err == nil {
 				return resp, nil
 			}
@@ -70,11 +59,7 @@ func cachedAPIByVidPid(vid, pid string) ([]*rpc.BoardListItem, error) {
 
 	resp, err := apiByVidPid(vid, pid) // Perform API requrest
 
-	if err == ErrNotFound {
-		inventory.Store.Set(cacheKey+".data", "ErrNotFound")
-		inventory.Store.Set(cacheKey+".ts", time.Now())
-		inventory.WriteStore()
-	} else if err == nil {
+	if err == nil {
 		if cachedResp, err := json.Marshal(resp); err == nil {
 			inventory.Store.Set(cacheKey+".data", string(cachedResp))
 			inventory.Store.Set(cacheKey+".ts", time.Now())
@@ -109,10 +94,11 @@ func apiByVidPid(vid, pid string) ([]*rpc.BoardListItem, error) {
 	if err != nil {
 		return nil, errors.Wrap(err, tr("error querying Arduino Cloud Api"))
 	}
+	if res.StatusCode == 404 {
+		// This is not an error, it just means that the board is not recognized
+		return nil, nil
+	}
 	if res.StatusCode >= 400 {
-		if res.StatusCode == 404 {
-			return nil, ErrNotFound
-		}
 		return nil, errors.Errorf(tr("the server responded with status %s"), res.Status)
 	}
 
@@ -146,7 +132,7 @@ func identifyViaCloudAPI(port *discovery.Port) ([]*rpc.BoardListItem, error) {
 	// If the port is not USB do not try identification via cloud
 	id := port.Properties
 	if !id.ContainsKey("vid") || !id.ContainsKey("pid") {
-		return nil, ErrNotFound
+		return nil, nil
 	}
 
 	logrus.Debug("Querying builder API for board identification...")
@@ -181,17 +167,10 @@ func identify(pme *packagemanager.Explorer, port *discovery.Port) ([]*rpc.BoardL
 	// the builder API if the board is a USB device port
 	if len(boards) == 0 {
 		items, err := identifyViaCloudAPI(port)
-		if errors.Is(err, ErrNotFound) {
-			// the board couldn't be detected, print a warning
-			logrus.Debug("Board not recognized")
-		} else if err != nil {
+		if err != nil {
 			// this is bad, but keep going
 			logrus.WithError(err).Debug("Error querying builder API")
 		}
-
-		// add a DetectedPort entry in any case: the `Boards` field will
-		// be empty but the port will be shown anyways (useful for 3rd party
-		// boards)
 		boards = items
 	}
 

Diff for: commands/board/list_test.go

@@ -71,9 +71,8 @@ func TestGetByVidPidNotFound(t *testing.T) {
 
 	vidPidURL = ts.URL
 	res, err := apiByVidPid("0x0420", "0x0069")
-	require.NotNil(t, err)
-	require.Equal(t, "board not found", err.Error())
-	require.Len(t, res, 0)
+	require.NoError(t, err)
+	require.Empty(t, res)
 }
 
 func TestGetByVidPid5xx(t *testing.T) {
@@ -108,7 +107,7 @@ func TestBoardDetectionViaAPIWithNonUSBPort(t *testing.T) {
 		Properties: properties.NewMap(),
 	}
 	items, err := identifyViaCloudAPI(port)
-	require.ErrorIs(t, err, ErrNotFound)
+	require.NoError(t, err)
 	require.Empty(t, items)
 }