remove clients from array properly

logger.go

@@ -54,6 +54,7 @@ func (c *Client) logStdErr() {
 
 func CreateClient() *Client {
 	var client Client
+	client.initialized = true
 	client.writer = make(LogWriter, 100)
 	sliceTex.Lock()
 	clients = append(clients, &client)
@@ -70,11 +71,14 @@ func Flush() {
 
 func (c *Client) Destroy() error {
 	var otherClients []*Client
+	if !c.initialized {
+		panic(errors.New("Cannot delete uninitialized client, did you use CreateClient?"))
+	}
 	sliceTex.Lock()
 	c.writer = nil
-	c = nil
+	c.initialized = false
 	for _, x := range clients {
-		if x != nil {
+		if x.initialized {
 			otherClients = append(otherClients, x)
 		}
 	}
@@ -84,6 +88,9 @@ func (c *Client) Destroy() error {
 }
 
 func (c *Client) GetLogLevel() Level {
+	if !c.initialized {
+		panic(errors.New("Cannot get level for uninitialized client, use CreateClient instead"))
+	}
 	return c.LogLevel
 }
 
@@ -102,9 +109,19 @@ func createLog(e Entry) {
 
 // SetLogLevel set log level of logger
 func (c *Client) SetLogLevel(level Level) {
+	if !c.initialized {
+		panic(errors.New("Cannot set level for uninitialized client, use CreateClient instead"))
+	}
 	c.LogLevel = level
 }
 
+func (c *Client) Get() Entry {
+	if !c.initialized {
+		panic(errors.New("Cannot get logs for uninitialized client, did you use CreateClient?"))
+	}
+	return <-c.writer
+}
+
 // Trace prints out logs on trace level
 func Trace(args ...interface{}) {
 	output := fmt.Sprint(args...)

logger_test.go

@@ -5,8 +5,17 @@ import (
 )
 
 func TestCreateDestroy(t *testing.T) {
+	if len(clients) != 1 {
+		t.Errorf("Expected 1 client, but found %d", len(clients))
+	}
 	c := CreateClient()
+	if len(clients) != 2 {
+		t.Errorf("Expected 2 clients, but found %d", len(clients))
+	}
 	c.Destroy()
+	if len(clients) != 1 {
+		t.Errorf("Expected 1 client, but found %d", len(clients))
+	}
 }
 
 // SetLogLevel set log level of logger
@@ -19,18 +28,24 @@ func TestSetLogLevel(t *testing.T) {
 			t.Errorf("Got logLevel %d, but expected %d", int(c.GetLogLevel()), int(x))
 		}
 	}
+	c.Destroy()
 }
 
 // Trace prints out logs on trace level
 func TestTrace(t *testing.T) {
-	var c Client
+	testString := "Testing trace!"
+	var c *Client
+	c = CreateClient()
 	c.SetLogLevel(LTrace)
-	Trace("Testing trace!")
-	Trace("Testing trace!")
-	Trace("Testing trace!")
-	Trace("Testing trace!")
-	Trace("Testing trace!")
 
+	for i := 0; i < 5; i++ {
+		Trace(testString)
+	}
+	for i := 0; i < 5; i++ {
+		if testString != c.Get().Output {
+			t.Error("Trace input doesn't match output")
+		}
+	}
 }
 
 // Debug prints out logs on debug level

structs.go

@@ -7,6 +7,7 @@ type LogWriter chan Entry
 type Client struct {
 	LogLevel    Level `json:"level"`
 	writer      LogWriter
+	initialized bool
 }
 
 type Entry struct {