implement ippool

1. support vlan ippool management
2. support calico ippool management

Signed-off-by: Duan Jiong <djduanjiong@gmail.com>

pkg/simple/client/network/ippool/ipam/ipam_test.go

@@ -0,0 +1,139 @@
+/*
+Copyright 2020 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 ipam
+
+import (
+	"flag"
+	"fmt"
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/klog"
+	"kubesphere.io/kubesphere/pkg/apis/network/v1alpha1"
+	ksfake "kubesphere.io/kubesphere/pkg/client/clientset/versioned/fake"
+	"testing"
+)
+
+func TestIPAM_blockGenerator(t *testing.T) {
+	pool := &v1alpha1.IPPool{
+		ObjectMeta: v1.ObjectMeta{
+			Name: "testippool",
+		},
+		Spec: v1alpha1.IPPoolSpec{
+			Type:       v1alpha1.VLAN,
+			CIDR:       "192.168.0.0/24",
+			RangeEnd:   "192.168.0.250",
+			RangeStart: "192.168.0.10",
+			BlockSize:  25,
+		},
+	}
+	blocks := blockGenerator(pool)
+	for subnet := blocks(); subnet != nil; subnet = blocks() {
+		if subnet.String() != "192.168.0.0/25" && subnet.String() != "192.168.0.128/25" {
+			t.FailNow()
+		}
+	}
+}
+
+func TestIPAMSuit(t *testing.T) {
+	klog.InitFlags(nil)
+	flag.Set("logtostderr", "true")
+	flag.Set("v", "4")
+	flag.Parse()
+	klog.SetOutput(GinkgoWriter)
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "IPAM Test Suite")
+}
+
+const (
+	vlanIPPoolName = "testippool"
+)
+
+var (
+	vlanIPPool = &v1alpha1.IPPool{
+		TypeMeta: v1.TypeMeta{},
+		ObjectMeta: v1.ObjectMeta{
+			Name: vlanIPPoolName,
+		},
+		Spec: v1alpha1.IPPoolSpec{
+			Type: v1alpha1.VLAN,
+			CIDR: "192.168.0.0/24",
+		},
+		Status: v1alpha1.IPPoolStatus{},
+	}
+)
+
+func newVLANIPAMClient() IPAMClient {
+	vlanIPPool.Labels = map[string]string{
+		v1alpha1.IPPoolTypeLabel: vlanIPPool.Spec.Type,
+		v1alpha1.IPPoolNameLabel: vlanIPPool.Name,
+		v1alpha1.IPPoolIDLabel:   fmt.Sprintf("%d", vlanIPPool.ID()),
+	}
+	return IPAMClient{
+		typeStr: v1alpha1.VLAN,
+		client:  ksfake.NewSimpleClientset(vlanIPPool),
+	}
+}
+
+func TestIpamClient_GetAllPools(t *testing.T) {
+	c := newVLANIPAMClient()
+	pools, _ := c.getAllPools()
+	if len(pools) != 1 {
+		t.FailNow()
+	}
+}
+
+var _ = Describe("test vlan ippool", func() {
+	It("test get all vlan ippool", func() {
+		c := newVLANIPAMClient()
+		pools, _ := c.getAllPools()
+		Expect(len(pools)).To(Equal(1))
+	})
+
+	It("test get pool utilization", func() {
+		c := newVLANIPAMClient()
+		stats, _ := c.GetUtilization(GetUtilizationArgs{Pools: []string{vlanIPPoolName}})
+		Expect(len(stats)).To(Equal(1))
+		Expect(stats[0].Unallocated).To(Equal(256))
+	})
+
+	It("test auto assign/unassign ip", func() {
+		c := newVLANIPAMClient()
+		result, _ := c.AutoAssign(AutoAssignArgs{
+			HandleID: "testhandle",
+			Pool:     vlanIPPoolName,
+		})
+		Expect(len(result.IPs)).To(Equal(1))
+		stats, _ := c.GetUtilization(GetUtilizationArgs{Pools: []string{vlanIPPoolName}})
+		Expect(stats[0].Unallocated).To(Equal(255))
+
+		blocks, _ := c.client.NetworkV1alpha1().IPAMBlocks().List(v1.ListOptions{})
+		Expect(len(blocks.Items)).To(Equal(1))
+		Expect(blocks.Items[0].BlockName()).To(Equal(fmt.Sprintf("%d-%s", vlanIPPool.ID(), "192-168-0-0-24")))
+
+		handles, _ := c.client.NetworkV1alpha1().IPAMHandles().List(v1.ListOptions{})
+		Expect(len(handles.Items)).To(Equal(1))
+		Expect(handles.Items[0].Name).To(Equal("testhandle"))
+
+		Expect(c.ReleaseByHandle("testhandle")).ShouldNot(HaveOccurred())
+		blocks, _ = c.client.NetworkV1alpha1().IPAMBlocks().List(v1.ListOptions{})
+		Expect(len(blocks.Items)).To(Equal(0))
+
+		handles, _ = c.client.NetworkV1alpha1().IPAMHandles().List(v1.ListOptions{})
+		Expect(len(handles.Items)).To(Equal(0))
+	})
+})