refactor: remove unused getInitPid function

.gitignore

@@ -31,3 +31,6 @@ bundles/
 
 # python-related directories
 __pycache__/
+
+# IDE/editor specific files
+.idea/

pkg/unikontainers/utils.go

@@ -43,30 +43,6 @@ const (
 	rootfsDirName     = "rootfs"
 )
 
-// getInitPid extracts "init_process_pid" value from the given JSON file
-func getInitPid(filePath string) (float64, error) {
-	// Open the JSON file for reading
-	file, err := os.Open(filePath)
-	if err != nil {
-		return 0, nil
-	}
-	defer file.Close()
-
-	// Decode the JSON data into a map[string]interface{}
-	var jsonData map[string]interface{}
-	decoder := json.NewDecoder(file)
-	if err := decoder.Decode(&jsonData); err != nil {
-		return 0, nil
-	}
-
-	// Extract the specific value "init_process_pid"
-	initProcessPID, found := jsonData["init_process_pid"].(float64) // Assuming it's a numeric value
-	if !found {
-		return 0, nil
-	}
-	return initProcessPID, nil
-}
-
 // copy sourceFile to targetDir
 // creates targetDir and all necessary parent directories
 func copyFile(sourceFile string, targetPath string) error {

pkg/unikontainers/utils_test.go

@@ -47,78 +47,6 @@ func TestWritePidFile(t *testing.T) {
 	os.Remove(pidFilePath)
 }
 
-func TestGetInitPid(t *testing.T) {
-	t.Run("init PID found", func(t *testing.T) {
-		t.Parallel()
-
-		// Create a temporary file for testing
-		tmpDir := t.TempDir()
-		tmpFile, err := os.CreateTemp(tmpDir, "test*.json")
-		assert.NoError(t, err)
-
-		// Write test data to the file
-		testData := map[string]interface{}{
-			"init_process_pid": 12345.0,
-		}
-		jsonData, err := json.Marshal(testData)
-		assert.NoError(t, err)
-
-		_, err = tmpFile.Write(jsonData)
-		assert.NoError(t, err)
-		tmpFile.Close()
-
-		// Call the function and check the result
-		pid, err := getInitPid(tmpFile.Name())
-		assert.NoError(t, err, "Expected no error in getting init PID")
-		assert.Equal(t, 12345.0, pid, "Expected PID to be 12345")
-	})
-	t.Run("init PID file not found", func(t *testing.T) {
-		t.Parallel()
-		// Call the function with a non-existent file
-		pid, err := getInitPid("nonexistent.json")
-		assert.Equal(t, float64(0), pid, "Expected PID to be 0 for nonexistent file")
-		assert.NoError(t, err, "Expected no error for nonexistent file")
-	})
-
-	t.Run("init PID invalid JSON", func(t *testing.T) {
-		t.Parallel()
-		// Create a temporary file with invalid JSON
-		tmpDir := t.TempDir()
-		tmpFile, err := os.CreateTemp(tmpDir, "test*.json")
-		assert.NoError(t, err)
-		_, err = tmpFile.WriteString("{invalid json}")
-		assert.NoError(t, err)
-		tmpFile.Close()
-
-		// Call the function and check the result
-		pid, err := getInitPid(tmpFile.Name())
-		assert.Equal(t, float64(0), pid, "Expected PID to be 0 for invalid JSON")
-		assert.NoError(t, err, "Expected no error for invalid JSON")
-	})
-	t.Run("init PID missing key", func(t *testing.T) {
-		t.Parallel()
-		// Create a temporary file without "init_process_pid"
-		tmpDir := t.TempDir()
-		tmpFile, err := os.CreateTemp(tmpDir, "test*.json")
-		assert.NoError(t, err)
-
-		testData := map[string]interface{}{
-			"some_other_key": 12345.0,
-		}
-		jsonData, err := json.Marshal(testData)
-		assert.NoError(t, err)
-
-		_, err = tmpFile.Write(jsonData)
-		assert.NoError(t, err)
-		tmpFile.Close()
-
-		// Call the function and check the result
-		pid, err := getInitPid(tmpFile.Name())
-		assert.Equal(t, float64(0), pid, "Expected PID to be 0 for missing key")
-		assert.NoError(t, err, "Expected no error for missing key")
-	})
-}
-
 func TestCopyFile(t *testing.T) {
 	t.Run("copy file success", func(t *testing.T) {
 		t.Parallel()