add ks-iam and ks-apigateway

Signed-off-by: hongming <talonwan@yunify.com>

pkg/models/iam/counter.go

@@ -0,0 +1,54 @@
+/*
+
+ Copyright 2019 The KubeSphere Authors.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+
+*/
+package iam
+
+import "sync"
+
+type Counter struct {
+	value int
+	m     *sync.Mutex
+}
+
+func NewCounter(value int) Counter {
+	c := Counter{}
+	c.m = &sync.Mutex{}
+	c.Set(value)
+	return c
+}
+
+func (c *Counter) Set(value int) {
+	c.m.Lock()
+	c.value = value
+	c.m.Unlock()
+}
+
+func (c *Counter) Add(value int) {
+	c.m.Lock()
+	c.value += value
+	c.m.Unlock()
+}
+
+func (c *Counter) Sub(value int) {
+	c.m.Lock()
+	c.value -= value
+	c.m.Unlock()
+}
+
+func (c *Counter) Get() int {
+	return c.value
+}