fix: datarace config read/write by multiple go routines

.github/workflows/check-certificates.yml

@@ -6,6 +6,8 @@ on:
   push:
     paths:
       - ".github/workflows/check-certificates.ya?ml"
+    tags-ignore:
+      - '*'
   pull_request:
     paths:
       - ".github/workflows/check-certificates.ya?ml"

.github/workflows/release.yml

@@ -286,6 +286,11 @@ jobs:
             -k "${{ env.KEYCHAIN_PASSWORD }}" \
             "${{ env.KEYCHAIN }}"
 
+      - name: Install Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: ${{ env.GO_VERSION }}
+
       - name: Install gon for code signing
         uses: actions/checkout@v4
         with:
@@ -309,7 +314,7 @@ jobs:
           bundle_id = "cc.arduino.${{ env.PROJECT_NAME }}"
 
           sign {
-            application_identity = "Developer ID Application: ARDUINO SA (7KT7ZWMCJT)"
+            application_identity = "Massimo Banzi Apple Key"
             deep = true
           }
 
@@ -577,7 +582,7 @@ jobs:
           bundle_id = "cc.arduino.${{ env.PROJECT_NAME }}-installer"
 
           sign {
-            application_identity = "Developer ID Application: ARDUINO SA (7KT7ZWMCJT)"
+            application_identity = "Massimo Banzi Apple Key"
           }
 
           # Ask Gon for zip output to force notarization process to take place.

bufferflow_timed.go

@@ -33,8 +33,8 @@ type BufferflowTimed struct {
 	bufferedOutput string
 }
 
-// NewBufferflowTimed will create a new timed bufferflow
-func NewBufferflowTimed(port string, output chan<- []byte) *BufferflowTimed {
+// NewBufferFlowTimed will create a new timed bufferflow
+func NewBufferFlowTimed(port string, output chan<- []byte) *BufferflowTimed {
 	return &BufferflowTimed{
 		port:           port,
 		output:         output,
@@ -48,7 +48,7 @@ func NewBufferflowTimed(port string, output chan<- []byte) *BufferflowTimed {
 
 // Init will initialize the bufferflow
 func (b *BufferflowTimed) Init() {
-	log.Println("Initting timed buffer flow (output once every 16ms)")
+	log.Println("Start consuming from serial port (output once every 16ms)")
 	go b.consumeInput()
 }
 

config/config.go

@@ -142,3 +142,41 @@
 	}
 	return nil
 }
+
+func GetConfigPath() *paths.Path {
+	// Let's handle the config
+	configDir := GetDefaultConfigDir()
+	var configPath *paths.Path
+
+	// see if the env var is defined, if it is take the config from there, this will override the default path
+	if envConfig := os.Getenv("ARDUINO_CREATE_AGENT_CONFIG"); envConfig != "" {
+		configPath = paths.New(envConfig)
+		if configPath.NotExist() {
+			log.Panicf("config from env var %s does not exists", envConfig)
+		}
+		log.Infof("using config from env variable: %s", configPath)
+	} else if defaultConfigPath := configDir.Join("config.ini"); defaultConfigPath.Exist() {
+		// by default take the config from the ~/.arduino-create/config.ini file
+		configPath = defaultConfigPath
+		log.Infof("using config from default: %s", configPath)
+	} else {
+		// Fall back to the old config.ini location
+		src, _ := os.Executable()
+		oldConfigPath := paths.New(src).Parent().Join("config.ini")
+		if oldConfigPath.Exist() {
+			err := oldConfigPath.CopyTo(defaultConfigPath)
+			if err != nil {
+				log.Errorf("cannot copy old %s, to %s, generating new config", oldConfigPath, configPath)
+			} else {
+				configPath = defaultConfigPath
+				log.Infof("copied old %s, to %s", oldConfigPath, configPath)
+			}
+		}
+	}
+	if configPath == nil {
+		configPath = GenerateConfig(configDir)
+	}
+
+	return configPath
+
+}

config/config_test.go

@@ -0,0 +1,61 @@
+package config
+
+import (
+	"fmt"
+	"os"
+	"testing"
+
+	"github.com/arduino/go-paths-helper"
+	"github.com/sirupsen/logrus"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestGetConfigPath(t *testing.T) {
+	t.Run("read config.ini from ARDUINO_CREATE_AGENT_CONFIG", func(t *testing.T) {
+		os.Setenv("ARDUINO_CREATE_AGENT_CONFIG", "./testdata/fromenv/config.ini")
+		defer os.Unsetenv("ARDUINO_CREATE_AGENT_CONFIG")
+		configPath := GetConfigPath()
+		assert.Equal(t, "./testdata/fromenv/config.ini", configPath.String())
+	})
+
+	t.Run("panic if config.ini does not exist", func(t *testing.T) {
+		os.Setenv("ARDUINO_CREATE_AGENT_CONFIG", "./testdata/nonexistent_config.ini")
+		defer os.Unsetenv("ARDUINO_CREATE_AGENT_CONFIG")
+
+		defer func() {
+			if r := recover(); r != nil {
+				entry, ok := r.(*logrus.Entry)
+				if !ok {
+					t.Errorf("Expected panic of type *logrus.Entry but got %T", r)
+				} else {
+					assert.Equal(t, "config from env var ./testdata/nonexistent_config.ini does not exists", entry.Message)
+				}
+			} else {
+				t.Errorf("Expected panic but did not get one")
+			}
+		}()
+
+		GetConfigPath()
+	})
+
+	t.Run("read config.ini from $HOME", func(t *testing.T) {
+		os.Setenv("HOME", "./testdata/home")
+		defer os.Unsetenv("HOME")
+		configPath := GetConfigPath()
+		assert.Equal(t, "testdata/home/.config/ArduinoCreateAgent/config.ini", configPath.String())
+	})
+
+	t.Run("fallback old : read config.ini where the binary is launched", func(t *testing.T) {
+		src, _ := os.Executable()
+		paths.New(src).Parent().Join("config.ini").Create() // create a config.ini in the same directory as the binary
+		// The fallback path is the directory where the binary is launched
+		fmt.Println(src)
+		os.Setenv("HOME", "./testdata/noconfig") // force to not have a config in the home directory
+		defer os.Unsetenv("HOME")
+
+		// expect it creates a config.ini in the same directory as the binary
+		configPath := GetConfigPath()
+		assert.Equal(t, "testdata/home/.config/ArduinoCreateAgent/config.ini", configPath.String())
+	})
+
+}

config/testdata/fromenv/config.ini

@@ -0,0 +1,8 @@
+gc = std
+hostname = unknown-hostname
+regex = usb|acm|com
+v = true
+appName = CreateAgent/Stable
+updateUrl = https://downloads.arduino.cc/
+origins = https://local.arduino.cc:8000, https://local.arduino.cc:8001, https://create-dev.arduino.cc, https://*.sparklyunicorn.cc, https://*.iot-cloud-arduino-cc.pages.dev, https://cloud.oniudra.cc, https://app.oniudra.cc,https://*.iot-cloud-arduino-cc.pages.dev
+crashreport = false

config/testdata/home/.config/ArduinoCreateAgent/config.ini

@@ -0,0 +1,8 @@
+gc = std
+hostname = unknown-hostname
+regex = usb|acm|com
+v = true
+appName = config-from-home-dir
+updateUrl = https://downloads.arduino.cc/
+origins = https://local.arduino.cc:8000, https://local.arduino.cc:8001, https://*.iot-cloud-arduino-cc.pages.dev
+crashreport = false

config/testdata/noconfig/.config/ArduinoCreateAgent/config.ini

@@ -0,0 +1,10 @@
+gc = std  # Type of garbage collection. std = Normal garbage collection allowing system to decide (this has been known to cause a stop the world in the middle of a CNC job which can cause lost responses from the CNC controller and thus stalled jobs. use max instead to solve.), off = let memory grow unbounded (you have to send in the gc command manually to garbage collect or you will run out of RAM eventually), max = Force garbage collection on each recv or send on a serial port (this minimizes stop the world events and thus lost serial responses, but increases CPU usage)
+hostname = unknown-hostname  # Override the hostname we get from the OS
+regex = usb|acm|com  # Regular expression to filter serial port list
+v = true  # show debug logging
+appName = CreateAgent/Stable
+updateUrl = https://downloads.arduino.cc/
+origins = https://local.arduino.cc:8000
+#httpProxy = http://your.proxy:port # Proxy server for HTTP requests
+crashreport = false # enable crashreport logging
+autostartMacOS = true # the Arduino Create Agent is able to start automatically after login on macOS (launchd agent)