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This PR adds generated files under pkg/client and vendor folder.
This commit is contained in:
xing-yang
2018-07-12 10:55:15 -07:00
parent 36b1de0341
commit e213d1890d
17729 changed files with 5090889 additions and 0 deletions
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33
vendor/k8s.io/kubernetes/pkg/controller/nodeipam/ipam/cidrset/BUILD generated vendored Normal file
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package(default_visibility = ["//visibility:public"])
load(
"@io_bazel_rules_go//go:def.bzl",
"go_library",
"go_test",
)
go_test(
name = "go_default_test",
srcs = ["cidr_set_test.go"],
embed = [":go_default_library"],
deps = ["//vendor/github.com/golang/glog:go_default_library"],
)
go_library(
name = "go_default_library",
srcs = ["cidr_set.go"],
importpath = "k8s.io/kubernetes/pkg/controller/nodeipam/ipam/cidrset",
)
filegroup(
name = "package-srcs",
srcs = glob(["**"]),
tags = ["automanaged"],
visibility = ["//visibility:private"],
)
filegroup(
name = "all-srcs",
srcs = [":package-srcs"],
tags = ["automanaged"],
)

264
vendor/k8s.io/kubernetes/pkg/controller/nodeipam/ipam/cidrset/cidr_set.go generated vendored Normal file
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/*
Copyright 2016 The Kubernetes 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 cidrset
import (
"encoding/binary"
"errors"
"fmt"
"math/big"
"math/bits"
"net"
"sync"
)
// CidrSet manages a set of CIDR ranges from which blocks of IPs can
// be allocated from.
type CidrSet struct {
sync.Mutex
clusterCIDR *net.IPNet
clusterIP net.IP
clusterMaskSize int
maxCIDRs int
nextCandidate int
used big.Int
subNetMaskSize int
}
const (
// The subnet mask size cannot be greater than 16 more than the cluster mask size
// TODO: https://github.com/kubernetes/kubernetes/issues/44918
// clusterSubnetMaxDiff limited to 16 due to the uncompressed bitmap
clusterSubnetMaxDiff = 16
// halfIPv6Len is the half of the IPv6 length
halfIPv6Len = net.IPv6len / 2
)
var (
// ErrCIDRRangeNoCIDRsRemaining occurs when there is no more space
// to allocate CIDR ranges.
ErrCIDRRangeNoCIDRsRemaining = errors.New(
"CIDR allocation failed; there are no remaining CIDRs left to allocate in the accepted range")
// ErrCIDRSetSubNetTooBig occurs when the subnet mask size is too
// big compared to the CIDR mask size.
ErrCIDRSetSubNetTooBig = errors.New(
"New CIDR set failed; the node CIDR size is too big")
)
// NewCIDRSet creates a new CidrSet.
func NewCIDRSet(clusterCIDR *net.IPNet, subNetMaskSize int) (*CidrSet, error) {
clusterMask := clusterCIDR.Mask
clusterMaskSize, _ := clusterMask.Size()
var maxCIDRs int
if (clusterCIDR.IP.To4() == nil) && (subNetMaskSize-clusterMaskSize > clusterSubnetMaxDiff) {
return nil, ErrCIDRSetSubNetTooBig
}
maxCIDRs = 1 << uint32(subNetMaskSize-clusterMaskSize)
return &CidrSet{
clusterCIDR: clusterCIDR,
clusterIP: clusterCIDR.IP,
clusterMaskSize: clusterMaskSize,
maxCIDRs: maxCIDRs,
subNetMaskSize: subNetMaskSize,
}, nil
}
func (s *CidrSet) indexToCIDRBlock(index int) *net.IPNet {
var ip []byte
var mask int
switch /*v4 or v6*/ {
case s.clusterIP.To4() != nil:
{
j := uint32(index) << uint32(32-s.subNetMaskSize)
ipInt := (binary.BigEndian.Uint32(s.clusterIP)) | j
ip = make([]byte, 4)
binary.BigEndian.PutUint32(ip, ipInt)
mask = 32
}
case s.clusterIP.To16() != nil:
{
// leftClusterIP | rightClusterIP
// 2001:0DB8:1234:0000:0000:0000:0000:0000
const v6NBits = 128
const halfV6NBits = v6NBits / 2
leftClusterIP := binary.BigEndian.Uint64(s.clusterIP[:halfIPv6Len])
rightClusterIP := binary.BigEndian.Uint64(s.clusterIP[halfIPv6Len:])
leftIP, rightIP := make([]byte, halfIPv6Len), make([]byte, halfIPv6Len)
if s.subNetMaskSize <= halfV6NBits {
// We only care about left side IP
leftClusterIP |= uint64(index) << uint(halfV6NBits-s.subNetMaskSize)
} else {
if s.clusterMaskSize < halfV6NBits {
// see how many bits are needed to reach the left side
btl := uint(s.subNetMaskSize - halfV6NBits)
indexMaxBit := uint(64 - bits.LeadingZeros64(uint64(index)))
if indexMaxBit > btl {
leftClusterIP |= uint64(index) >> btl
}
}
// the right side will be calculated the same way either the
// subNetMaskSize affects both left and right sides
rightClusterIP |= uint64(index) << uint(v6NBits-s.subNetMaskSize)
}
binary.BigEndian.PutUint64(leftIP, leftClusterIP)
binary.BigEndian.PutUint64(rightIP, rightClusterIP)
ip = append(leftIP, rightIP...)
mask = 128
}
}
return &net.IPNet{
IP: ip,
Mask: net.CIDRMask(s.subNetMaskSize, mask),
}
}
// AllocateNext allocates the next free CIDR range. This will set the range
// as occupied and return the allocated range.
func (s *CidrSet) AllocateNext() (*net.IPNet, error) {
s.Lock()
defer s.Unlock()
nextUnused := -1
for i := 0; i < s.maxCIDRs; i++ {
candidate := (i + s.nextCandidate) % s.maxCIDRs
if s.used.Bit(candidate) == 0 {
nextUnused = candidate
break
}
}
if nextUnused == -1 {
return nil, ErrCIDRRangeNoCIDRsRemaining
}
s.nextCandidate = (nextUnused + 1) % s.maxCIDRs
s.used.SetBit(&s.used, nextUnused, 1)
return s.indexToCIDRBlock(nextUnused), nil
}
func (s *CidrSet) getBeginingAndEndIndices(cidr *net.IPNet) (begin, end int, err error) {
begin, end = 0, s.maxCIDRs-1
cidrMask := cidr.Mask
maskSize, _ := cidrMask.Size()
var ipSize int
if cidr == nil {
return -1, -1, fmt.Errorf("Error getting indices for cluster cidr %v, cidr is nil", s.clusterCIDR)
}
if !s.clusterCIDR.Contains(cidr.IP.Mask(s.clusterCIDR.Mask)) && !cidr.Contains(s.clusterCIDR.IP.Mask(cidr.Mask)) {
return -1, -1, fmt.Errorf("cidr %v is out the range of cluster cidr %v", cidr, s.clusterCIDR)
}
if s.clusterMaskSize < maskSize {
ipSize = net.IPv4len
if cidr.IP.To4() == nil {
ipSize = net.IPv6len
}
subNetMask := net.CIDRMask(s.subNetMaskSize, ipSize*8)
begin, err = s.getIndexForCIDR(&net.IPNet{
IP: cidr.IP.Mask(subNetMask),
Mask: subNetMask,
})
if err != nil {
return -1, -1, err
}
ip := make([]byte, ipSize)
if cidr.IP.To4() != nil {
ipInt := binary.BigEndian.Uint32(cidr.IP) | (^binary.BigEndian.Uint32(cidr.Mask))
binary.BigEndian.PutUint32(ip, ipInt)
} else {
// ipIntLeft | ipIntRight
// 2001:0DB8:1234:0000:0000:0000:0000:0000
ipIntLeft := binary.BigEndian.Uint64(cidr.IP[:net.IPv6len/2]) | (^binary.BigEndian.Uint64(cidr.Mask[:net.IPv6len/2]))
ipIntRight := binary.BigEndian.Uint64(cidr.IP[net.IPv6len/2:]) | (^binary.BigEndian.Uint64(cidr.Mask[net.IPv6len/2:]))
binary.BigEndian.PutUint64(ip[:net.IPv6len/2], ipIntLeft)
binary.BigEndian.PutUint64(ip[net.IPv6len/2:], ipIntRight)
}
end, err = s.getIndexForCIDR(&net.IPNet{
IP: net.IP(ip).Mask(subNetMask),
Mask: subNetMask,
})
if err != nil {
return -1, -1, err
}
}
return begin, end, nil
}
// Release releases the given CIDR range.
func (s *CidrSet) Release(cidr *net.IPNet) error {
begin, end, err := s.getBeginingAndEndIndices(cidr)
if err != nil {
return err
}
s.Lock()
defer s.Unlock()
for i := begin; i <= end; i++ {
s.used.SetBit(&s.used, i, 0)
}
return nil
}
// Occupy marks the given CIDR range as used. Occupy does not check if the CIDR
// range was previously used.
func (s *CidrSet) Occupy(cidr *net.IPNet) (err error) {
begin, end, err := s.getBeginingAndEndIndices(cidr)
if err != nil {
return err
}
s.Lock()
defer s.Unlock()
for i := begin; i <= end; i++ {
s.used.SetBit(&s.used, i, 1)
}
return nil
}
func (s *CidrSet) getIndexForCIDR(cidr *net.IPNet) (int, error) {
return s.getIndexForIP(cidr.IP)
}
func (s *CidrSet) getIndexForIP(ip net.IP) (int, error) {
if ip.To4() != nil {
cidrIndex := (binary.BigEndian.Uint32(s.clusterIP) ^ binary.BigEndian.Uint32(ip.To4())) >> uint32(32-s.subNetMaskSize)
if cidrIndex >= uint32(s.maxCIDRs) {
return 0, fmt.Errorf("CIDR: %v/%v is out of the range of CIDR allocator", ip, s.subNetMaskSize)
}
return int(cidrIndex), nil
}
if ip.To16() != nil {
bigIP := big.NewInt(0).SetBytes(s.clusterIP)
bigIP = bigIP.Xor(bigIP, big.NewInt(0).SetBytes(ip))
cidrIndexBig := bigIP.Rsh(bigIP, uint(net.IPv6len*8-s.subNetMaskSize))
cidrIndex := cidrIndexBig.Uint64()
if cidrIndex >= uint64(s.maxCIDRs) {
return 0, fmt.Errorf("CIDR: %v/%v is out of the range of CIDR allocator", ip, s.subNetMaskSize)
}
return int(cidrIndex), nil
}
return 0, fmt.Errorf("invalid IP: %v", ip)
}

733
vendor/k8s.io/kubernetes/pkg/controller/nodeipam/ipam/cidrset/cidr_set_test.go generated vendored Normal file
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/*
Copyright 2016 The Kubernetes 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 cidrset
import (
"math/big"
"net"
"reflect"
"testing"
"github.com/golang/glog"
)
func TestCIDRSetFullyAllocated(t *testing.T) {
cases := []struct {
clusterCIDRStr string
subNetMaskSize int
expectedCIDR string
description string
}{
{
clusterCIDRStr: "127.123.234.0/30",
subNetMaskSize: 30,
expectedCIDR: "127.123.234.0/30",
description: "Fully allocated CIDR with IPv4",
},
{
clusterCIDRStr: "beef:1234::/30",
subNetMaskSize: 30,
expectedCIDR: "beef:1234::/30",
description: "Fully allocated CIDR with IPv6",
},
}
for _, tc := range cases {
_, clusterCIDR, _ := net.ParseCIDR(tc.clusterCIDRStr)
a, err := NewCIDRSet(clusterCIDR, tc.subNetMaskSize)
if err != nil {
t.Fatalf("unexpected error: %v for %v", err, tc.description)
}
p, err := a.AllocateNext()
if err != nil {
t.Fatalf("unexpected error: %v for %v", err, tc.description)
}
if p.String() != tc.expectedCIDR {
t.Fatalf("unexpected allocated cidr: %v, expecting %v for %v",
p.String(), tc.expectedCIDR, tc.description)
}
_, err = a.AllocateNext()
if err == nil {
t.Fatalf("expected error because of fully-allocated range for %v", tc.description)
}
a.Release(p)
p, err = a.AllocateNext()
if err != nil {
t.Fatalf("unexpected error: %v for %v", err, tc.description)
}
if p.String() != tc.expectedCIDR {
t.Fatalf("unexpected allocated cidr: %v, expecting %v for %v",
p.String(), tc.expectedCIDR, tc.description)
}
_, err = a.AllocateNext()
if err == nil {
t.Fatalf("expected error because of fully-allocated range for %v", tc.description)
}
}
}
func TestIndexToCIDRBlock(t *testing.T) {
cases := []struct {
clusterCIDRStr string
subnetMaskSize int
index int
CIDRBlock string
description string
}{
{
clusterCIDRStr: "127.123.3.0/16",
subnetMaskSize: 24,
index: 0,
CIDRBlock: "127.123.0.0/24",
description: "1st IP address indexed with IPv4",
},
{
clusterCIDRStr: "127.123.0.0/16",
subnetMaskSize: 24,
index: 15,
CIDRBlock: "127.123.15.0/24",
description: "16th IP address indexed with IPv4",
},
{
clusterCIDRStr: "192.168.5.219/28",
subnetMaskSize: 32,
index: 5,
CIDRBlock: "192.168.5.213/32",
description: "5th IP address indexed with IPv4",
},
{
clusterCIDRStr: "2001:0db8:1234:3::/48",
subnetMaskSize: 64,
index: 0,
CIDRBlock: "2001:db8:1234::/64",
description: "1st IP address indexed with IPv6 /64",
},
{
clusterCIDRStr: "2001:0db8:1234::/48",
subnetMaskSize: 64,
index: 15,
CIDRBlock: "2001:db8:1234:f::/64",
description: "16th IP address indexed with IPv6 /64",
},
{
clusterCIDRStr: "2001:0db8:85a3::8a2e:0370:7334/50",
subnetMaskSize: 63,
index: 6425,
CIDRBlock: "2001:db8:85a3:3232::/63",
description: "6426th IP address indexed with IPv6 /63",
},
{
clusterCIDRStr: "2001:0db8::/32",
subnetMaskSize: 48,
index: 0,
CIDRBlock: "2001:db8::/48",
description: "1st IP address indexed with IPv6 /48",
},
{
clusterCIDRStr: "2001:0db8::/32",
subnetMaskSize: 48,
index: 15,
CIDRBlock: "2001:db8:f::/48",
description: "16th IP address indexed with IPv6 /48",
},
{
clusterCIDRStr: "2001:0db8:85a3::8a2e:0370:7334/32",
subnetMaskSize: 48,
index: 6425,
CIDRBlock: "2001:db8:1919::/48",
description: "6426th IP address indexed with IPv6 /48",
},
{
clusterCIDRStr: "2001:0db8:1234:ff00::/56",
subnetMaskSize: 72,
index: 0,
CIDRBlock: "2001:db8:1234:ff00::/72",
description: "1st IP address indexed with IPv6 /72",
},
{
clusterCIDRStr: "2001:0db8:1234:ff00::/56",
subnetMaskSize: 72,
index: 15,
CIDRBlock: "2001:db8:1234:ff00:f00::/72",
description: "16th IP address indexed with IPv6 /72",
},
{
clusterCIDRStr: "2001:0db8:1234:ff00::0370:7334/56",
subnetMaskSize: 72,
index: 6425,
CIDRBlock: "2001:db8:1234:ff19:1900::/72",
description: "6426th IP address indexed with IPv6 /72",
},
{
clusterCIDRStr: "2001:0db8:1234:0:1234::/80",
subnetMaskSize: 96,
index: 0,
CIDRBlock: "2001:db8:1234:0:1234::/96",
description: "1st IP address indexed with IPv6 /96",
},
{
clusterCIDRStr: "2001:0db8:1234:0:1234::/80",
subnetMaskSize: 96,
index: 15,
CIDRBlock: "2001:db8:1234:0:1234:f::/96",
description: "16th IP address indexed with IPv6 /96",
},
{
clusterCIDRStr: "2001:0db8:1234:ff00::0370:7334/80",
subnetMaskSize: 96,
index: 6425,
CIDRBlock: "2001:db8:1234:ff00:0:1919::/96",
description: "6426th IP address indexed with IPv6 /96",
},
}
for _, tc := range cases {
_, clusterCIDR, _ := net.ParseCIDR(tc.clusterCIDRStr)
a, err := NewCIDRSet(clusterCIDR, tc.subnetMaskSize)
if err != nil {
t.Fatalf("error for %v ", tc.description)
}
cidr := a.indexToCIDRBlock(tc.index)
if cidr.String() != tc.CIDRBlock {
t.Fatalf("error for %v index %d %s", tc.description, tc.index, cidr.String())
}
}
}
func TestCIDRSet_RandomishAllocation(t *testing.T) {
cases := []struct {
clusterCIDRStr string
description string
}{
{
clusterCIDRStr: "127.123.234.0/16",
description: "RandomishAllocation with IPv4",
},
{
clusterCIDRStr: "beef:1234::/16",
description: "RandomishAllocation with IPv6",
},
}
for _, tc := range cases {
_, clusterCIDR, _ := net.ParseCIDR(tc.clusterCIDRStr)
a, err := NewCIDRSet(clusterCIDR, 24)
if err != nil {
t.Fatalf("Error allocating CIDRSet for %v", tc.description)
}
// allocate all the CIDRs
var cidrs []*net.IPNet
for i := 0; i < 256; i++ {
if c, err := a.AllocateNext(); err == nil {
cidrs = append(cidrs, c)
} else {
t.Fatalf("unexpected error: %v for %v", err, tc.description)
}
}
//var err error
_, err = a.AllocateNext()
if err == nil {
t.Fatalf("expected error because of fully-allocated range for %v", tc.description)
}
// release them all
for i := 0; i < len(cidrs); i++ {
a.Release(cidrs[i])
}
// allocate the CIDRs again
var rcidrs []*net.IPNet
for i := 0; i < 256; i++ {
if c, err := a.AllocateNext(); err == nil {
rcidrs = append(rcidrs, c)
} else {
t.Fatalf("unexpected error: %d, %v for %v", i, err, tc.description)
}
}
_, err = a.AllocateNext()
if err == nil {
t.Fatalf("expected error because of fully-allocated range for %v", tc.description)
}
if !reflect.DeepEqual(cidrs, rcidrs) {
t.Fatalf("expected re-allocated cidrs are the same collection for %v", tc.description)
}
}
}
func TestCIDRSet_AllocationOccupied(t *testing.T) {
cases := []struct {
clusterCIDRStr string
description string
}{
{
clusterCIDRStr: "127.123.234.0/16",
description: "AllocationOccupied with IPv4",
},
{
clusterCIDRStr: "beef:1234::/16",
description: "AllocationOccupied with IPv6",
},
}
for _, tc := range cases {
_, clusterCIDR, _ := net.ParseCIDR(tc.clusterCIDRStr)
a, err := NewCIDRSet(clusterCIDR, 24)
if err != nil {
t.Fatalf("Error allocating CIDRSet for %v", tc.description)
}
// allocate all the CIDRs
var cidrs []*net.IPNet
var numCIDRs = 256
for i := 0; i < numCIDRs; i++ {
if c, err := a.AllocateNext(); err == nil {
cidrs = append(cidrs, c)
} else {
t.Fatalf("unexpected error: %v for %v", err, tc.description)
}
}
//var err error
_, err = a.AllocateNext()
if err == nil {
t.Fatalf("expected error because of fully-allocated range for %v", tc.description)
}
// release them all
for i := 0; i < len(cidrs); i++ {
a.Release(cidrs[i])
}
// occupy the last 128 CIDRs
for i := numCIDRs / 2; i < numCIDRs; i++ {
a.Occupy(cidrs[i])
}
// allocate the first 128 CIDRs again
var rcidrs []*net.IPNet
for i := 0; i < numCIDRs/2; i++ {
if c, err := a.AllocateNext(); err == nil {
rcidrs = append(rcidrs, c)
} else {
t.Fatalf("unexpected error: %d, %v for %v", i, err, tc.description)
}
}
_, err = a.AllocateNext()
if err == nil {
t.Fatalf("expected error because of fully-allocated range for %v", tc.description)
}
// check Occupy() work properly
for i := numCIDRs / 2; i < numCIDRs; i++ {
rcidrs = append(rcidrs, cidrs[i])
}
if !reflect.DeepEqual(cidrs, rcidrs) {
t.Fatalf("expected re-allocated cidrs are the same collection for %v", tc.description)
}
}
}
func TestGetBitforCIDR(t *testing.T) {
cases := []struct {
clusterCIDRStr string
subNetMaskSize int
subNetCIDRStr string
expectedBit int
expectErr bool
description string
}{
{
clusterCIDRStr: "127.0.0.0/8",
subNetMaskSize: 16,
subNetCIDRStr: "127.0.0.0/16",
expectedBit: 0,
expectErr: false,
description: "Get 0 Bit with IPv4",
},
{
clusterCIDRStr: "be00::/8",
subNetMaskSize: 16,
subNetCIDRStr: "be00::/16",
expectedBit: 0,
expectErr: false,
description: "Get 0 Bit with IPv6",
},
{
clusterCIDRStr: "127.0.0.0/8",
subNetMaskSize: 16,
subNetCIDRStr: "127.123.0.0/16",
expectedBit: 123,
expectErr: false,
description: "Get 123rd Bit with IPv4",
},
{
clusterCIDRStr: "be00::/8",
subNetMaskSize: 16,
subNetCIDRStr: "beef::/16",
expectedBit: 0xef,
expectErr: false,
description: "Get xef Bit with IPv6",
},
{
clusterCIDRStr: "127.0.0.0/8",
subNetMaskSize: 16,
subNetCIDRStr: "127.168.0.0/16",
expectedBit: 168,
expectErr: false,
description: "Get 168th Bit with IPv4",
},
{
clusterCIDRStr: "be00::/8",
subNetMaskSize: 16,
subNetCIDRStr: "be68::/16",
expectedBit: 0x68,
expectErr: false,
description: "Get x68th Bit with IPv6",
},
{
clusterCIDRStr: "127.0.0.0/8",
subNetMaskSize: 16,
subNetCIDRStr: "127.224.0.0/16",
expectedBit: 224,
expectErr: false,
description: "Get 224th Bit with IPv4",
},
{
clusterCIDRStr: "be00::/8",
subNetMaskSize: 16,
subNetCIDRStr: "be24::/16",
expectedBit: 0x24,
expectErr: false,
description: "Get x24th Bit with IPv6",
},
{
clusterCIDRStr: "192.168.0.0/16",
subNetMaskSize: 24,
subNetCIDRStr: "192.168.12.0/24",
expectedBit: 12,
expectErr: false,
description: "Get 12th Bit with IPv4",
},
{
clusterCIDRStr: "beef::/16",
subNetMaskSize: 24,
subNetCIDRStr: "beef:1200::/24",
expectedBit: 0x12,
expectErr: false,
description: "Get x12th Bit with IPv6",
},
{
clusterCIDRStr: "192.168.0.0/16",
subNetMaskSize: 24,
subNetCIDRStr: "192.168.151.0/24",
expectedBit: 151,
expectErr: false,
description: "Get 151st Bit with IPv4",
},
{
clusterCIDRStr: "beef::/16",
subNetMaskSize: 24,
subNetCIDRStr: "beef:9700::/24",
expectedBit: 0x97,
expectErr: false,
description: "Get x97st Bit with IPv6",
},
{
clusterCIDRStr: "192.168.0.0/16",
subNetMaskSize: 24,
subNetCIDRStr: "127.168.224.0/24",
expectErr: true,
description: "Get error with IPv4",
},
{
clusterCIDRStr: "beef::/16",
subNetMaskSize: 24,
subNetCIDRStr: "2001:db00::/24",
expectErr: true,
description: "Get error with IPv6",
},
}
for _, tc := range cases {
_, clusterCIDR, err := net.ParseCIDR(tc.clusterCIDRStr)
if err != nil {
t.Fatalf("unexpected error: %v for %v", err, tc.description)
}
cs, err := NewCIDRSet(clusterCIDR, tc.subNetMaskSize)
if err != nil {
t.Fatalf("Error allocating CIDRSet for %v", tc.description)
}
_, subnetCIDR, err := net.ParseCIDR(tc.subNetCIDRStr)
if err != nil {
t.Fatalf("unexpected error: %v for %v", err, tc.description)
}
got, err := cs.getIndexForCIDR(subnetCIDR)
if err == nil && tc.expectErr {
glog.Errorf("expected error but got null for %v", tc.description)
continue
}
if err != nil && !tc.expectErr {
glog.Errorf("unexpected error: %v for %v", err, tc.description)
continue
}
if got != tc.expectedBit {
glog.Errorf("expected %v, but got %v for %v", tc.expectedBit, got, tc.description)
}
}
}
func TestOccupy(t *testing.T) {
cases := []struct {
clusterCIDRStr string
subNetMaskSize int
subNetCIDRStr string
expectedUsedBegin int
expectedUsedEnd int
expectErr bool
description string
}{
{
clusterCIDRStr: "127.0.0.0/8",
subNetMaskSize: 16,
subNetCIDRStr: "127.0.0.0/8",
expectedUsedBegin: 0,
expectedUsedEnd: 255,
expectErr: false,
description: "Occupy all Bits with IPv4",
},
{
clusterCIDRStr: "2001:beef:1200::/40",
subNetMaskSize: 48,
subNetCIDRStr: "2001:beef:1200::/40",
expectedUsedBegin: 0,
expectedUsedEnd: 255,
expectErr: false,
description: "Occupy all Bits with IPv6",
},
{
clusterCIDRStr: "127.0.0.0/8",
subNetMaskSize: 16,
subNetCIDRStr: "127.0.0.0/2",
expectedUsedBegin: 0,
expectedUsedEnd: 255,
expectErr: false,
description: "Occupy every Bit with IPv4",
},
{
clusterCIDRStr: "2001:beef:1200::/40",
subNetMaskSize: 48,
subNetCIDRStr: "2001:beef:1234::/34",
expectedUsedBegin: 0,
expectedUsedEnd: 255,
expectErr: false,
description: "Occupy every Bit with IPv6",
},
{
clusterCIDRStr: "127.0.0.0/8",
subNetMaskSize: 16,
subNetCIDRStr: "127.0.0.0/16",
expectedUsedBegin: 0,
expectedUsedEnd: 0,
expectErr: false,
description: "Occupy 1st Bit with IPv4",
},
{
clusterCIDRStr: "2001:beef:1200::/40",
subNetMaskSize: 48,
subNetCIDRStr: "2001:beef:1200::/48",
expectedUsedBegin: 0,
expectedUsedEnd: 0,
expectErr: false,
description: "Occupy 1st Bit with IPv6",
},
{
clusterCIDRStr: "127.0.0.0/8",
subNetMaskSize: 32,
subNetCIDRStr: "127.0.0.0/16",
expectedUsedBegin: 0,
expectedUsedEnd: 65535,
expectErr: false,
description: "Occupy 65535 Bits with IPv4",
},
{
clusterCIDRStr: "2001:beef:1200::/48",
subNetMaskSize: 64,
subNetCIDRStr: "2001:beef:1200::/48",
expectedUsedBegin: 0,
expectedUsedEnd: 65535,
expectErr: false,
description: "Occupy 65535 Bits with IPv6",
},
{
clusterCIDRStr: "127.0.0.0/7",
subNetMaskSize: 16,
subNetCIDRStr: "127.0.0.0/15",
expectedUsedBegin: 256,
expectedUsedEnd: 257,
expectErr: false,
description: "Occupy 257th Bit with IPv4",
},
{
clusterCIDRStr: "2001:beef:7f00::/39",
subNetMaskSize: 48,
subNetCIDRStr: "2001:beef:7f00::/47",
expectedUsedBegin: 256,
expectedUsedEnd: 257,
expectErr: false,
description: "Occupy 257th Bit with IPv6",
},
{
clusterCIDRStr: "127.0.0.0/7",
subNetMaskSize: 15,
subNetCIDRStr: "127.0.0.0/15",
expectedUsedBegin: 128,
expectedUsedEnd: 128,
expectErr: false,
description: "Occupy 128th Bit with IPv4",
},
{
clusterCIDRStr: "2001:beef:7f00::/39",
subNetMaskSize: 47,
subNetCIDRStr: "2001:beef:7f00::/47",
expectedUsedBegin: 128,
expectedUsedEnd: 128,
expectErr: false,
description: "Occupy 128th Bit with IPv6",
},
{
clusterCIDRStr: "127.0.0.0/7",
subNetMaskSize: 18,
subNetCIDRStr: "127.0.0.0/15",
expectedUsedBegin: 1024,
expectedUsedEnd: 1031,
expectErr: false,
description: "Occupy 1031st Bit with IPv4",
},
{
clusterCIDRStr: "2001:beef:7f00::/39",
subNetMaskSize: 50,
subNetCIDRStr: "2001:beef:7f00::/47",
expectedUsedBegin: 1024,
expectedUsedEnd: 1031,
expectErr: false,
description: "Occupy 1031st Bit with IPv6",
},
}
for _, tc := range cases {
_, clusterCIDR, err := net.ParseCIDR(tc.clusterCIDRStr)
if err != nil {
t.Fatalf("unexpected error: %v for %v", err, tc.description)
}
cs, err := NewCIDRSet(clusterCIDR, tc.subNetMaskSize)
if err != nil {
t.Fatalf("Error allocating CIDRSet for %v", tc.description)
}
_, subnetCIDR, err := net.ParseCIDR(tc.subNetCIDRStr)
if err != nil {
t.Fatalf("unexpected error: %v for %v", err, tc.description)
}
err = cs.Occupy(subnetCIDR)
if err == nil && tc.expectErr {
t.Errorf("expected error but got none for %v", tc.description)
continue
}
if err != nil && !tc.expectErr {
t.Errorf("unexpected error: %v for %v", err, tc.description)
continue
}
expectedUsed := big.Int{}
for i := tc.expectedUsedBegin; i <= tc.expectedUsedEnd; i++ {
expectedUsed.SetBit(&expectedUsed, i, 1)
}
if expectedUsed.Cmp(&cs.used) != 0 {
t.Errorf("error for %v", tc.description)
}
}
}
func TestCIDRSetv6(t *testing.T) {
cases := []struct {
clusterCIDRStr string
subNetMaskSize int
expectedCIDR string
expectedCIDR2 string
expectErr bool
description string
}{
{
clusterCIDRStr: "127.0.0.0/8",
subNetMaskSize: 32,
expectErr: false,
expectedCIDR: "127.0.0.0/32",
expectedCIDR2: "127.0.0.1/32",
description: "Max cluster subnet size with IPv4",
},
{
clusterCIDRStr: "beef:1234::/32",
subNetMaskSize: 49,
expectErr: true,
description: "Max cluster subnet size with IPv6",
},
{
clusterCIDRStr: "2001:beef:1234:369b::/60",
subNetMaskSize: 64,
expectedCIDR: "2001:beef:1234:3690::/64",
expectedCIDR2: "2001:beef:1234:3691::/64",
expectErr: false,
description: "Allocate a few IPv6",
},
}
for _, tc := range cases {
_, clusterCIDR, _ := net.ParseCIDR(tc.clusterCIDRStr)
a, err := NewCIDRSet(clusterCIDR, tc.subNetMaskSize)
if err != nil {
if tc.expectErr {
continue
}
t.Fatalf("Error allocating CIDRSet for %v", tc.description)
}
p, err := a.AllocateNext()
if err == nil && tc.expectErr {
t.Errorf("expected error but got none for %v", tc.description)
continue
}
if err != nil && !tc.expectErr {
t.Errorf("unexpected error: %v for %v", err, tc.description)
continue
}
if !tc.expectErr {
if p.String() != tc.expectedCIDR {
t.Fatalf("unexpected allocated cidr: %s for %v", p.String(), tc.description)
}
}
p2, err := a.AllocateNext()
if !tc.expectErr {
if p2.String() != tc.expectedCIDR2 {
t.Fatalf("unexpected allocated cidr: %s for %v", p2.String(), tc.description)
}
}
}
}