Add more error handling and mutex guards

api/config/config.go

@@ -58,15 +58,15 @@ func (c *ServerConfig) PopulateCalculatedFields() {
 
 	switch c.LogLevel {
 	case "debug":
-		logger.LogLevel = logger.LogLevelDebug
+		logger.SetLogLevel(logger.LogLevelDebug)
 	case "info":
-		logger.LogLevel = logger.LogLevelInfo
+		logger.SetLogLevel(logger.LogLevelInfo)
 	case "error":
-		logger.LogLevel = logger.LogLevelError
+		logger.SetLogLevel(logger.LogLevelError)
 	case "silent":
-		logger.LogLevel = logger.LogLevelSilent
+		logger.SetLogLevel(logger.LogLevelSilent)
 	default:
-		logger.LogLevel = logger.LogLevelInfo
+		logger.SetLogLevel(logger.LogLevelInfo)
 	}
 }
 

api/router.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"net/http"
+	"sync"
 
 	"github.com/gin-gonic/gin"
 	"github.com/pikami/cosmium/api/handlers"
@@ -13,15 +14,19 @@ import (
 	tlsprovider "github.com/pikami/cosmium/internal/tls_provider"
 )
 
+var ginMux sync.Mutex
+
 func (s *ApiServer) CreateRouter(repository *repositories.DataRepository) {
 	routeHandlers := handlers.NewHandlers(repository, s.config)
 
+	ginMux.Lock()
 	gin.DefaultWriter = logger.InfoWriter()
 	gin.DefaultErrorWriter = logger.ErrorWriter()
 
 	if s.config.LogLevel != "debug" {
 		gin.SetMode(gin.ReleaseMode)
 	}
+	ginMux.Unlock()
 
 	router := gin.Default(func(e *gin.Engine) {
 		e.RedirectTrailingSlash = false

internal/logger/logger.go

@@ -6,6 +6,7 @@ import (
 	"os"
 	"runtime"
 	"strings"
+	"sync"
 )
 
 type LogLevelType int
@@ -21,67 +22,68 @@ type LogWriter struct {
 	WriterLevel LogLevelType
 }
 
-var LogLevel = LogLevelInfo
+var logLevelMutex sync.RWMutex
+var logLevel = LogLevelInfo
 
 var DebugLogger = log.New(os.Stdout, "", log.Ldate|log.Ltime)
 var InfoLogger = log.New(os.Stdout, "", log.Ldate|log.Ltime)
 var ErrorLogger = log.New(os.Stderr, "", log.Ldate|log.Ltime)
 
 func DebugLn(v ...any) {
-	if LogLevel <= LogLevelDebug {
+	if GetLogLevel() <= LogLevelDebug {
 		prefix := getCallerPrefix()
 		DebugLogger.Println(append([]interface{}{prefix}, v...)...)
 	}
 }
 
 func Debug(v ...any) {
-	if LogLevel <= LogLevelDebug {
+	if GetLogLevel() <= LogLevelDebug {
 		prefix := getCallerPrefix()
 		DebugLogger.Println(append([]interface{}{prefix}, v...)...)
 	}
 }
 
 func Debugf(format string, v ...any) {
-	if LogLevel <= LogLevelDebug {
+	if GetLogLevel() <= LogLevelDebug {
 		prefix := getCallerPrefix()
 		DebugLogger.Printf(prefix+format, v...)
 	}
 }
 
 func InfoLn(v ...any) {
-	if LogLevel <= LogLevelInfo {
+	if GetLogLevel() <= LogLevelInfo {
 		InfoLogger.Println(v...)
 	}
 }
 
 func Info(v ...any) {
-	if LogLevel <= LogLevelInfo {
+	if GetLogLevel() <= LogLevelInfo {
 		InfoLogger.Print(v...)
 	}
 }
 
 func Infof(format string, v ...any) {
-	if LogLevel <= LogLevelInfo {
+	if GetLogLevel() <= LogLevelInfo {
 		InfoLogger.Printf(format, v...)
 	}
 }
 
 func ErrorLn(v ...any) {
-	if LogLevel <= LogLevelError {
+	if GetLogLevel() <= LogLevelError {
 		prefix := getCallerPrefix()
 		ErrorLogger.Println(append([]interface{}{prefix}, v...)...)
 	}
 }
 
 func Error(v ...any) {
-	if LogLevel <= LogLevelError {
+	if GetLogLevel() <= LogLevelError {
 		prefix := getCallerPrefix()
 		ErrorLogger.Print(append([]interface{}{prefix}, v...)...)
 	}
 }
 
 func Errorf(format string, v ...any) {
-	if LogLevel <= LogLevelError {
+	if GetLogLevel() <= LogLevelError {
 		prefix := getCallerPrefix()
 		ErrorLogger.Printf(prefix+format, v...)
 	}
@@ -112,11 +114,25 @@ func DebugWriter() *LogWriter {
 	return &LogWriter{WriterLevel: LogLevelDebug}
 }
 
+func SetLogLevel(level LogLevelType) {
+	logLevelMutex.Lock()
+	defer logLevelMutex.Unlock()
+	logLevel = level
+}
+
+func GetLogLevel() LogLevelType {
+	logLevelMutex.RLock()
+	defer logLevelMutex.RUnlock()
+	return logLevel
+}
+
 func getCallerPrefix() string {
 	_, file, line, ok := runtime.Caller(2)
 	if ok {
 		parts := strings.Split(file, "/")
-		file = parts[len(parts)-1]
+		if len(parts) > 0 {
+			file = parts[len(parts)-1]
+		}
 		return fmt.Sprintf("%s:%d - ", file, line)
 	}
 

internal/repositories/state.go

@@ -46,8 +46,8 @@ func (r *DataRepository) LoadStateFS(filePath string) {
 }
 
 func (r *DataRepository) LoadStateJSON(jsonData string) error {
-	r.storeState.RLock()
+	r.storeState.Lock()
-	defer r.storeState.RUnlock()
+	defer r.storeState.Unlock()
 
 	var state repositorymodels.State
 	if err := json.Unmarshal([]byte(jsonData), &state); err != nil {

sharedlibrary/collections.go

@@ -47,7 +47,10 @@ func GetCollection(serverName *C.char, databaseId *C.char, collectionId *C.char)
 		return C.CString("")
 	}
 
-	collectionJson, _ := json.Marshal(collection)
+	collectionJson, err := json.Marshal(collection)
+	if err != nil {
+		return C.CString("")
+	}
 	return C.CString(string(collectionJson))
 }
 
@@ -67,7 +70,10 @@ func GetAllCollections(serverName *C.char, databaseId *C.char) *C.char {
 		return C.CString("")
 	}
 
-	collectionsJson, _ := json.Marshal(collections)
+	collectionsJson, err := json.Marshal(collections)
+	if err != nil {
+		return C.CString("")
+	}
 	return C.CString(string(collectionsJson))
 }
 

sharedlibrary/databases.go

@@ -45,7 +45,10 @@ func GetDatabase(serverName *C.char, databaseId *C.char) *C.char {
 		return C.CString("")
 	}
 
-	databaseJson, _ := json.Marshal(database)
+	databaseJson, err := json.Marshal(database)
+	if err != nil {
+		return C.CString("")
+	}
 	return C.CString(string(databaseJson))
 }
 

sharedlibrary/documents.go

@@ -49,7 +49,10 @@ func GetDocument(serverName *C.char, databaseId *C.char, collectionId *C.char, d
 		return C.CString("")
 	}
 
-	documentJson, _ := json.Marshal(document)
+	documentJson, err := json.Marshal(document)
+	if err != nil {
+		return C.CString("")
+	}
 	return C.CString(string(documentJson))
 }
 
@@ -70,7 +73,10 @@ func GetAllDocuments(serverName *C.char, databaseId *C.char, collectionId *C.cha
 		return C.CString("")
 	}
 
-	documentsJson, _ := json.Marshal(documents)
+	documentsJson, err := json.Marshal(documents)
+	if err != nil {
+		return C.CString("")
+	}
 	return C.CString(string(documentsJson))
 }
 

sharedlibrary/shared.go

@@ -14,7 +14,7 @@ type ServerInstance struct {
 }
 
 var serverInstances map[string]*ServerInstance
-var mutex sync.RWMutex
+var mutex sync.Mutex
 
 const (
 	ResponseSuccess = 0
@@ -32,8 +32,8 @@ const (
 )
 
 func getInstance(serverName string) (*ServerInstance, bool) {
-	mutex.RLock()
+	mutex.Lock()
-	defer mutex.RUnlock()
+	defer mutex.Unlock()
 
 	if serverInstances == nil {
 		serverInstances = make(map[string]*ServerInstance)