merge 4.0.0-RC

1 files changed, 54 insertions, 0 deletions

diff --git a/internal/io/dlog/loggers/factory.go b/internal/io/dlog/loggers/factory.go
new file mode 100644
index 0000000..a5cc7cf
--- /dev/null
+++ b/internal/io/dlog/loggers/factory.go
@@ -0,0 +1,54 @@
+package loggers
+
+import (
+	"fmt"
+	"strings"
+	"sync"
+)
+
+var factoryMap map[string]Logger
+var factoryMutex sync.Mutex
+
+// Factory is there to retrieve a logger based on various settings.
+func Factory(sourceName, loggerName string, logRotation Strategy) Logger {
+	factoryMutex.Lock()
+	defer factoryMutex.Unlock()
+
+	id := fmt.Sprintf("sourceName:%s,fileBase:%s,loggerName:%s", sourceName,
+		logRotation.FileBase, loggerName)
+	if factoryMap == nil {
+		factoryMap = make(map[string]Logger)
+	}
+
+	singleton, ok := factoryMap[id]
+	if !ok {
+		switch strings.ToLower(loggerName) {
+		case "none":
+			singleton = none{}
+		case "stdout":
+			singleton = newStdout()
+			factoryMap[id] = singleton
+		case "file":
+			singleton = newFile(logRotation)
+			factoryMap[id] = singleton
+		case "fout":
+			singleton = newFout(logRotation)
+			factoryMap[id] = singleton
+		default:
+			panic(fmt.Sprintf("Unsupported logger type '%s'", loggerName))
+		}
+	}
+	return singleton
+}
+
+// FactoryRotate invokes a log rotation of all loggers.
+func FactoryRotate() {
+	factoryMutex.Lock()
+	defer factoryMutex.Unlock()
+	if factoryMap == nil {
+		return
+	}
+	for _, logger := range factoryMap {
+		logger.Rotate()
+	}
+}