f_com_del:add del component func

Signed-off-by: zhangjiulong <[email protected]>

com.go

@@ -4,11 +4,11 @@ import (
 	"sync"
 )
 
-type Components struct {
+type components struct {
 	m sync.Map
 }
 
-func (c *Components) Ins(key string, f func() interface{}) interface{} {
+func (c *components) Ins(key string, f func() interface{}) interface{} {
 	// @todo 监听配置重载信号
 	v, ok := c.m.Load(key)
 	if !ok {
@@ -19,6 +19,15 @@ func (c *Components) Ins(key string, f func() interface{}) interface{} {
 
 }
 
-var Component = new(Components)
+func (c *components) Del(key string, cb ...func()) {
+	c.m.Delete(key)
+
+	if len(cb) > 0 {
+		// 执行回调关闭链接
+		go cb[0]()
+	}
+}
+
+var Component = new(components)
 
 // example @see coms/kafka