package ipam
import (
"encoding/json"
"flag"
"fmt"
"io/ioutil"
"math/rand"
"net"
"strconv"
"testing"
"time"
"github.com/docker/libkv/store"
"github.com/docker/libkv/store/boltdb"
"github.com/docker/libnetwork/bitseq"
"github.com/docker/libnetwork/datastore"
"github.com/docker/libnetwork/ipamapi"
"github.com/docker/libnetwork/ipamutils"
_ "github.com/docker/libnetwork/testutils"
"github.com/docker/libnetwork/types"
)
const (
defaultPrefix = "/tmp/libnetwork/test/ipam"
)
func init() {
boltdb.Register()
}
// OptionBoltdbWithRandomDBFile function returns a random dir for local store backend
func randomLocalStore() (datastore.DataStore, error) {
tmp, err := ioutil.TempFile("", "libnetwork-")
if err != nil {
return nil, fmt.Errorf("Error creating temp file: %v", err)
}
if err := tmp.Close(); err != nil {
return nil, fmt.Errorf("Error closing temp file: %v", err)
}
return datastore.NewDataStore(datastore.LocalScope, &datastore.ScopeCfg{
Client: datastore.ScopeClientCfg{
Provider: "boltdb",
Address: defaultPrefix + tmp.Name(),
Config: &store.Config{
Bucket: "libnetwork",
ConnectionTimeout: 3 * time.Second,
},
},
})
}
func getAllocator() (*Allocator, error) {
ipamutils.InitNetworks()
ds, err := randomLocalStore()
if err != nil {
return nil, err
}
a, err := NewAllocator(ds, nil)
if err != nil {
return nil, err
}
return a, nil
}
func TestInt2IP2IntConversion(t *testing.T) {
for i := uint64(0); i < 256*256*256; i++ {
var array [4]byte // new array at each cycle
addIntToIP(array[:], i)
j := ipToUint64(array[:])
if j != i {
t.Fatalf("Failed to convert ordinal %d to IP % x and back to ordinal. Got %d", i, array, j)
}
}
}
func TestGetAddressVersion(t *testing.T) {
if v4 != getAddressVersion(net.ParseIP("172.28.30.112")) {
t.Fatalf("Failed to detect IPv4 version")
}
if v4 != getAddressVersion(net.ParseIP("0.0.0.1")) {
t.Fatalf("Failed to detect IPv4 version")
}
if v6 != getAddressVersion(net.ParseIP("ff01::1")) {
t.Fatalf("Failed to detect IPv6 version")
}
if v6 != getAddressVersion(net.ParseIP("2001:db8::76:51")) {
t.Fatalf("Failed to detect IPv6 version")
}
}
func TestKeyString(t *testing.T) {
k := &SubnetKey{AddressSpace: "default", Subnet: "172.27.0.0/16"}
expected := "default/172.27.0.0/16"
if expected != k.String() {
t.Fatalf("Unexpected key string: %s", k.String())
}
k2 := &SubnetKey{}
err := k2.FromString(expected)
if err != nil {
t.Fatal(err)
}
if k2.AddressSpace != k.AddressSpace || k2.Subnet != k.Subnet {
t.Fatalf("SubnetKey.FromString() failed. Expected %v. Got %v", k, k2)
}
expected = fmt.Sprintf("%s/%s", expected, "172.27.3.0/24")
k.ChildSubnet = "172.27.3.0/24"
if expected != k.String() {
t.Fatalf("Unexpected key string: %s", k.String())
}
err = k2.FromString(expected)
if err != nil {
t.Fatal(err)
}
if k2.AddressSpace != k.AddressSpace || k2.Subnet != k.Subnet || k2.ChildSubnet != k.ChildSubnet {
t.Fatalf("SubnetKey.FromString() failed. Expected %v. Got %v", k, k2)
}
}
func TestPoolDataMarshal(t *testing.T) {
_, nw, err := net.ParseCIDR("172.28.30.1/24")
if err != nil {
t.Fatal(err)
}
p := &PoolData{
ParentKey: SubnetKey{AddressSpace: "Blue", Subnet: "172.28.0.0/16"},
Pool: nw,
Range: &AddressRange{Sub: &net.IPNet{IP: net.IP{172, 28, 20, 0}, Mask: net.IPMask{255, 255, 255, 0}}, Start: 0, End: 255},
RefCount: 4,
}
ba, err := json.Marshal(p)
if err != nil {
t.Fatal(err)
}
var q PoolData
err = json.Unmarshal(ba, &q)
if err != nil {
t.Fatal(err)
}
if p.ParentKey != q.ParentKey || !types.CompareIPNet(p.Range.Sub, q.Range.Sub) ||
p.Range.Start != q.Range.Start || p.Range.End != q.Range.End || p.RefCount != q.RefCount ||
!types.CompareIPNet(p.Pool, q.Pool) {
t.Fatalf("\n%#v\n%#v", p, &q)
}
p = &PoolData{
ParentKey: SubnetKey{AddressSpace: "Blue", Subnet: "172.28.0.0/16"},
Pool: nw,
RefCount: 4,
}
ba, err = json.Marshal(p)
if err != nil {
t.Fatal(err)
}
err = json.Unmarshal(ba, &q)
if err != nil {
t.Fatal(err)
}
if q.Range != nil {
t.Fatalf("Unexpected Range")
}
}
func TestSubnetsMarshal(t *testing.T) {
a, err := getAllocator()
if err != nil {
t.Fatal(err)
}
pid0, _, _, err := a.RequestPool(localAddressSpace, "192.168.0.0/16", "", nil, false)
if err != nil {
t.Fatal(err)
}
pid1, _, _, err := a.RequestPool(localAddressSpace, "192.169.0.0/16", "", nil, false)
if err != nil {
t.Fatal(err)
}
_, _, err = a.RequestAddress(pid0, nil, nil)
if err != nil {
t.Fatal(err)
}
cfg, err := a.getAddrSpace(localAddressSpace)
if err != nil {
t.Fatal(err)
}
ba := cfg.Value()
if err := cfg.SetValue(ba); err != nil {
t.Fatal(err)
}
expIP := &net.IPNet{IP: net.IP{192, 168, 0, 2}, Mask: net.IPMask{255, 255, 0, 0}}
ip, _, err := a.RequestAddress(pid0, nil, nil)
if err != nil {
t.Fatal(err)
}
if !types.CompareIPNet(expIP, ip) {
t.Fatalf("Got unexpected ip after pool config restore: %s", ip)
}
expIP = &net.IPNet{IP: net.IP{192, 169, 0, 1}, Mask: net.IPMask{255, 255, 0, 0}}
ip, _, err = a.RequestAddress(pid1, nil, nil)
if err != nil {
t.Fatal(err)
}
if !types.CompareIPNet(expIP, ip) {
t.Fatalf("Got unexpected ip after pool config restore: %s", ip)
}
}
func TestAddSubnets(t *testing.T) {
a, err := getAllocator()
if err != nil {
t.Fatal(err)
}
a.addrSpaces["abc"] = a.addrSpaces[localAddressSpace]
pid0, _, _, err := a.RequestPool(localAddressSpace, "10.0.0.0/8", "", nil, false)
if err != nil {
t.Fatalf("Unexpected failure in adding subnet")
}
pid1, _, _, err := a.RequestPool("abc", "10.0.0.0/8", "", nil, false)
if err != nil {
t.Fatalf("Unexpected failure in adding overlapping subnets to different address spaces: %v", err)
}
if pid0 == pid1 {
t.Fatalf("returned same pool id for same subnets in different namespaces")
}
pid, _, _, err := a.RequestPool("abc", "10.0.0.0/8", "", nil, false)
if err != nil {
t.Fatalf("Unexpected failure requesting existing subnet: %v", err)
}
if pid != pid1 {
t.Fatalf("returned different pool id for same subnet requests")
}
_, _, _, err = a.RequestPool("abc", "10.128.0.0/9", "", nil, false)
if err == nil {
t.Fatalf("Expected failure on adding overlapping base subnet")
}
pid2, _, _, err := a.RequestPool("abc", "10.0.0.0/8", "10.128.0.0/9", nil, false)
if err != nil {
t.Fatalf("Unexpected failure on adding sub pool: %v", err)
}
pid3, _, _, err := a.RequestPool("abc", "10.0.0.0/8", "10.128.0.0/9", nil, false)
if err != nil {
t.Fatalf("Unexpected failure on adding overlapping sub pool: %v", err)
}
if pid2 != pid3 {
t.Fatalf("returned different pool id for same sub pool requests")
}
pid, _, _, err = a.RequestPool(localAddressSpace, "10.20.2.0/24", "", nil, false)
if err == nil {
t.Fatalf("Failed to detect overlapping subnets")
}
_, _, _, err = a.RequestPool(localAddressSpace, "10.128.0.0/9", "", nil, false)
if err == nil {
t.Fatalf("Failed to detect overlapping subnets")
}
_, _, _, err = a.RequestPool(localAddressSpace, "1003:1:2:3:4:5:6::/112", "", nil, false)
if err != nil {
t.Fatalf("Failed to add v6 subnet: %s", err.Error())
}
_, _, _, err = a.RequestPool(localAddressSpace, "1003:1:2:3::/64", "", nil, false)
if err == nil {
t.Fatalf("Failed to detect overlapping v6 subnet")
}
}
func TestAddReleasePoolID(t *testing.T) {
var k0, k1, k2 SubnetKey
a, err := getAllocator()
if err != nil {
t.Fatal(err)
}
aSpace, err := a.getAddrSpace(localAddressSpace)
if err != nil {
t.Fatal(err)
}
subnets := aSpace.subnets
pid0, _, _, err := a.RequestPool(localAddressSpace, "10.0.0.0/8", "", nil, false)
if err != nil {
t.Fatalf("Unexpected failure in adding pool")
}
if err := k0.FromString(pid0); err != nil {
t.Fatal(err)
}
aSpace, err = a.getAddrSpace(localAddressSpace)
if err != nil {
t.Fatal(err)
}
subnets = aSpace.subnets
if subnets[k0].RefCount != 1 {
t.Fatalf("Unexpected ref count for %s: %d", k0, subnets[k0].RefCount)
}
pid1, _, _, err := a.RequestPool(localAddressSpace, "10.0.0.0/8", "10.0.0.0/16", nil, false)
if err != nil {
t.Fatalf("Unexpected failure in adding sub pool")
}
if err := k1.FromString(pid1); err != nil {
t.Fatal(err)
}
aSpace, err = a.getAddrSpace(localAddressSpace)
if err != nil {
t.Fatal(err)
}
subnets = aSpace.subnets
if subnets[k1].RefCount != 1 {
t.Fatalf("Unexpected ref count for %s: %d", k1, subnets[k1].RefCount)
}
pid2, _, _, err := a.RequestPool(localAddressSpace, "10.0.0.0/8", "10.0.0.0/16", nil, false)
if err != nil {
t.Fatalf("Unexpected failure in adding sub pool")
}
if pid0 == pid1 || pid0 == pid2 || pid1 != pid2 {
t.Fatalf("Incorrect poolIDs returned %s, %s, %s", pid0, pid1, pid2)
}
if err := k2.FromString(pid2); err != nil {
t.Fatal(err)
}
aSpace, err = a.getAddrSpace(localAddressSpace)
if err != nil {
t.Fatal(err)
}
subnets = aSpace.subnets
if subnets[k2].RefCount != 2 {
t.Fatalf("Unexpected ref count for %s: %d", k2, subnets[k2].RefCount)
}
if subnets[k0].RefCount != 3 {
t.Fatalf("Unexpected ref count for %s: %d", k0, subnets[k0].RefCount)
}
if err := a.ReleasePool(pid1); err != nil {
t.Fatal(err)
}
aSpace, err = a.getAddrSpace(localAddressSpace)
if err != nil {
t.Fatal(err)
}
subnets = aSpace.subnets
if subnets[k0].RefCount != 2 {
t.Fatalf("Unexpected ref count for %s: %d", k0, subnets[k0].RefCount)
}
if err := a.ReleasePool(pid0); err != nil {
t.Fatal(err)
}
aSpace, err = a.getAddrSpace(localAddressSpace)
if err != nil {
t.Fatal(err)
}
subnets = aSpace.subnets
if subnets[k0].RefCount != 1 {
t.Fatalf("Unexpected ref count for %s: %d", k0, subnets[k0].RefCount)
}
pid00, _, _, err := a.RequestPool(localAddressSpace, "10.0.0.0/8", "", nil, false)
if err != nil {
t.Fatalf("Unexpected failure in adding pool")
}
if pid00 != pid0 {
t.Fatalf("main pool should still exist")
}
aSpace, err = a.getAddrSpace(localAddressSpace)
if err != nil {
t.Fatal(err)
}
subnets = aSpace.subnets
if subnets[k0].RefCount != 2 {
t.Fatalf("Unexpected ref count for %s: %d", k0, subnets[k0].RefCount)
}
if err := a.ReleasePool(pid2); err != nil {
t.Fatal(err)
}
aSpace, err = a.getAddrSpace(localAddressSpace)
if err != nil {
t.Fatal(err)
}
subnets = aSpace.subnets
if subnets[k0].RefCount != 1 {
t.Fatalf("Unexpected ref count for %s: %d", k0, subnets[k0].RefCount)
}
if err := a.ReleasePool(pid00); err != nil {
t.Fatal(err)
}
aSpace, err = a.getAddrSpace(localAddressSpace)
if err != nil {
t.Fatal(err)
}
subnets = aSpace.subnets
if bp, ok := subnets[k0]; ok {
t.Fatalf("Base pool %s is still present: %v", k0, bp)
}
_, _, _, err = a.RequestPool(localAddressSpace, "10.0.0.0/8", "", nil, false)
if err != nil {
t.Fatalf("Unexpected failure in adding pool")
}
aSpace, err = a.getAddrSpace(localAddressSpace)
if err != nil {
t.Fatal(err)
}
subnets = aSpace.subnets
if subnets[k0].RefCount != 1 {
t.Fatalf("Unexpected ref count for %s: %d", k0, subnets[k0].RefCount)
}
}
func TestPredefinedPool(t *testing.T) {
a, err := getAllocator()
if err != nil {
t.Fatal(err)
}
if _, err := a.getPredefinedPool("blue", false); err == nil {
t.Fatalf("Expected failure for non default addr space")
}
pid, nw, _, err := a.RequestPool(localAddressSpace, "", "", nil, false)
if err != nil {
t.Fatal(err)
}
nw2, err := a.getPredefinedPool(localAddressSpace, false)
if err != nil {
t.Fatal(err)
}
if types.CompareIPNet(nw, nw2) {
t.Fatalf("Unexpected default network returned: %s = %s", nw2, nw)
}
if err := a.ReleasePool(pid); err != nil {
t.Fatal(err)
}
}
func TestRemoveSubnet(t *testing.T) {
a, err := getAllocator()
if err != nil {
t.Fatal(err)
}
a.addrSpaces["splane"] = &addrSpace{
id: dsConfigKey + "/" + "splane",
ds: a.addrSpaces[localAddressSpace].ds,
alloc: a.addrSpaces[localAddressSpace].alloc,
scope: a.addrSpaces[localAddressSpace].scope,
subnets: map[SubnetKey]*PoolData{},
}
input := []struct {
addrSpace string
subnet string
v6 bool
}{
{localAddressSpace, "192.168.0.0/16", false},
{localAddressSpace, "172.17.0.0/16", false},
{localAddressSpace, "10.0.0.0/8", false},
{localAddressSpace, "2001:db8:1:2:3:4:ffff::/112", false},
{"splane", "172.17.0.0/16", false},
{"splane", "10.0.0.0/8", false},
{"splane", "2001:db8:1:2:3:4:5::/112", true},
{"splane", "2001:db8:1:2:3:4:ffff::/112", true},
}
poolIDs := make([]string, len(input))
for ind, i := range input {
if poolIDs[ind], _, _, err = a.RequestPool(i.addrSpace, i.subnet, "", nil, i.v6); err != nil {
t.Fatalf("Failed to apply input. Can't proceed: %s", err.Error())
}
}
for ind, id := range poolIDs {
if err := a.ReleasePool(id); err != nil {
t.Fatalf("Failed to release poolID %s (%d)", id, ind)
}
}
}
func TestGetSameAddress(t *testing.T) {
a, err := getAllocator()
if err != nil {
t.Fatal(err)
}
a.addrSpaces["giallo"] = &addrSpace{
id: dsConfigKey + "/" + "giallo",
ds: a.addrSpaces[localAddressSpace].ds,
alloc: a.addrSpaces[localAddressSpace].alloc,
scope: a.addrSpaces[localAddressSpace].scope,
subnets: map[SubnetKey]*PoolData{},
}
pid, _, _, err := a.RequestPool("giallo", "192.168.100.0/24", "", nil, false)
if err != nil {
t.Fatal(err)
}
ip := net.ParseIP("192.168.100.250")
_, _, err = a.RequestAddress(pid, ip, nil)
if err != nil {
t.Fatal(err)
}
_, _, err = a.RequestAddress(pid, ip, nil)
if err == nil {
t.Fatal(err)
}
}
func TestGetAddressSubPoolEqualPool(t *testing.T) {
a, err := getAllocator()
if err != nil {
t.Fatal(err)
}
// Requesting a subpool of same size of the master pool should not cause any problem on ip allocation
pid, _, _, err := a.RequestPool(localAddressSpace, "172.18.0.0/16", "172.18.0.0/16", nil, false)
if err != nil {
t.Fatal(err)
}
_, _, err = a.RequestAddress(pid, nil, nil)
if err != nil {
t.Fatal(err)
}
}
func TestRequestReleaseAddressFromSubPool(t *testing.T) {
a, err := getAllocator()
if err != nil {
t.Fatal(err)
}
a.addrSpaces["rosso"] = &addrSpace{
id: dsConfigKey + "/" + "rosso",
ds: a.addrSpaces[localAddressSpace].ds,
alloc: a.addrSpaces[localAddressSpace].alloc,
scope: a.addrSpaces[localAddressSpace].scope,
subnets: map[SubnetKey]*PoolData{},
}
poolID, _, _, err := a.RequestPool("rosso", "172.28.0.0/16", "172.28.30.0/24", nil, false)
if err != nil {
t.Fatal(err)
}
var ip *net.IPNet
expected := &net.IPNet{IP: net.IP{172, 28, 30, 255}, Mask: net.IPMask{255, 255, 0, 0}}
for err == nil {
var c *net.IPNet
if c, _, err = a.RequestAddress(poolID, nil, nil); err == nil {
ip = c
}
}
if err != ipamapi.ErrNoAvailableIPs {
t.Fatal(err)
}
if !types.CompareIPNet(expected, ip) {
t.Fatalf("Unexpected last IP from subpool. Expected: %s. Got: %v.", expected, ip)
}
rp := &net.IPNet{IP: net.IP{172, 28, 30, 97}, Mask: net.IPMask{255, 255, 0, 0}}
if err = a.ReleaseAddress(poolID, rp.IP); err != nil {
t.Fatal(err)
}
if ip, _, err = a.RequestAddress(poolID, nil, nil); err != nil {
t.Fatal(err)
}
if !types.CompareIPNet(rp, ip) {
t.Fatalf("Unexpected IP from subpool. Expected: %s. Got: %v.", rp, ip)
}
_, _, _, err = a.RequestPool("rosso", "10.0.0.0/8", "10.0.0.0/16", nil, false)
if err != nil {
t.Fatal(err)
}
poolID, _, _, err = a.RequestPool("rosso", "10.0.0.0/16", "10.0.0.0/24", nil, false)
if err != nil {
t.Fatal(err)
}
expected = &net.IPNet{IP: net.IP{10, 0, 0, 255}, Mask: net.IPMask{255, 255, 0, 0}}
for err == nil {
var c *net.IPNet
if c, _, err = a.RequestAddress(poolID, nil, nil); err == nil {
ip = c
}
}
if err != ipamapi.ErrNoAvailableIPs {
t.Fatal(err)
}
if !types.CompareIPNet(expected, ip) {
t.Fatalf("Unexpected last IP from subpool. Expected: %s. Got: %v.", expected, ip)
}
rp = &net.IPNet{IP: net.IP{10, 0, 0, 79}, Mask: net.IPMask{255, 255, 0, 0}}
if err = a.ReleaseAddress(poolID, rp.IP); err != nil {
t.Fatal(err)
}
if ip, _, err = a.RequestAddress(poolID, nil, nil); err != nil {
t.Fatal(err)
}
if !types.CompareIPNet(rp, ip) {
t.Fatalf("Unexpected IP from subpool. Expected: %s. Got: %v.", rp, ip)
}
// Request any addresses from subpool after explicit address request
unoExp, _ := types.ParseCIDR("10.2.2.0/16")
dueExp, _ := types.ParseCIDR("10.2.2.2/16")
treExp, _ := types.ParseCIDR("10.2.2.1/16")
if poolID, _, _, err = a.RequestPool("rosso", "10.2.0.0/16", "10.2.2.0/24", nil, false); err != nil {
t.Fatal(err)
}
tre, _, err := a.RequestAddress(poolID, treExp.IP, nil)
if err != nil {
t.Fatal(err)
}
if !types.CompareIPNet(tre, treExp) {
t.Fatalf("Unexpected address: %v", tre)
}
uno, _, err := a.RequestAddress(poolID, nil, nil)
if err != nil {
t.Fatal(err)
}
if !types.CompareIPNet(uno, unoExp) {
t.Fatalf("Unexpected address: %v", uno)
}
due, _, err := a.RequestAddress(poolID, nil, nil)
if err != nil {
t.Fatal(err)
}
if !types.CompareIPNet(due, dueExp) {
t.Fatalf("Unexpected address: %v", due)
}
if err = a.ReleaseAddress(poolID, uno.IP); err != nil {
t.Fatal(err)
}
uno, _, err = a.RequestAddress(poolID, nil, nil)
if err != nil {
t.Fatal(err)
}
if !types.CompareIPNet(uno, unoExp) {
t.Fatalf("Unexpected address: %v", uno)
}
if err = a.ReleaseAddress(poolID, tre.IP); err != nil {
t.Fatal(err)
}
tre, _, err = a.RequestAddress(poolID, nil, nil)
if err != nil {
t.Fatal(err)
}
if !types.CompareIPNet(tre, treExp) {
t.Fatalf("Unexpected address: %v", tre)
}
}
func TestGetAddress(t *testing.T) {
input := []string{
/*"10.0.0.0/8", "10.0.0.0/9", "10.0.0.0/10",*/ "10.0.0.0/11", "10.0.0.0/12", "10.0.0.0/13", "10.0.0.0/14",
"10.0.0.0/15", "10.0.0.0/16", "10.0.0.0/17", "10.0.0.0/18", "10.0.0.0/19", "10.0.0.0/20", "10.0.0.0/21",
"10.0.0.0/22", "10.0.0.0/23", "10.0.0.0/24", "10.0.0.0/25", "10.0.0.0/26", "10.0.0.0/27", "10.0.0.0/28",
"10.0.0.0/29", "10.0.0.0/30", "10.0.0.0/31"}
for _, subnet := range input {
assertGetAddress(t, subnet)
}
}
func TestRequestSyntaxCheck(t *testing.T) {
var (
pool = "192.168.0.0/16"
subPool = "192.168.0.0/24"
as = "green"
err error
)
a, err := getAllocator()
if err != nil {
t.Fatal(err)
}
a.addrSpaces[as] = &addrSpace{
id: dsConfigKey + "/" + as,
ds: a.addrSpaces[localAddressSpace].ds,
alloc: a.addrSpaces[localAddressSpace].alloc,
scope: a.addrSpaces[localAddressSpace].scope,
subnets: map[SubnetKey]*PoolData{},
}
_, _, _, err = a.RequestPool("", pool, "", nil, false)
if err == nil {
t.Fatalf("Failed to detect wrong request: empty address space")
}
_, _, _, err = a.RequestPool("", pool, subPool, nil, false)
if err == nil {
t.Fatalf("Failed to detect wrong request: empty address space")
}
_, _, _, err = a.RequestPool(as, "", subPool, nil, false)
if err == nil {
t.Fatalf("Failed to detect wrong request: subPool specified and no pool")
}
pid, _, _, err := a.RequestPool(as, pool, subPool, nil, false)
if err != nil {
t.Fatalf("Unexpected failure: %v", err)
}
_, _, err = a.RequestAddress("", nil, nil)
if err == nil {
t.Fatalf("Failed to detect wrong request: no pool id specified")
}
ip := net.ParseIP("172.17.0.23")
_, _, err = a.RequestAddress(pid, ip, nil)
if err == nil {
t.Fatalf("Failed to detect wrong request: requested IP from different subnet")
}
ip = net.ParseIP("192.168.0.50")
_, _, err = a.RequestAddress(pid, ip, nil)
if err != nil {
t.Fatalf("Unexpected failure: %v", err)
}
err = a.ReleaseAddress("", ip)
if err == nil {
t.Fatalf("Failed to detect wrong request: no pool id specified")
}
err = a.ReleaseAddress(pid, nil)
if err == nil {
t.Fatalf("Failed to detect wrong request: no pool id specified")
}
err = a.ReleaseAddress(pid, ip)
if err != nil {
t.Fatalf("Unexpected failure: %v: %s, %s", err, pid, ip)
}
}
func TestRequest(t *testing.T) {
// Request N addresses from different size subnets, verifying last request
// returns expected address. Internal subnet host size is Allocator's default, 16
input := []struct {
subnet string
numReq int
lastIP string
}{
{"192.168.59.0/24", 254, "192.168.59.254"},
{"192.168.240.0/20", 255, "192.168.240.255"},
{"192.168.0.0/16", 255, "192.168.0.255"},
{"192.168.0.0/16", 256, "192.168.1.0"},
{"10.16.0.0/16", 255, "10.16.0.255"},
{"10.128.0.0/12", 255, "10.128.0.255"},
{"10.0.0.0/8", 256, "10.0.1.0"},
{"192.168.128.0/18", 4*256 - 1, "192.168.131.255"},
/*
{"192.168.240.0/20", 16*256 - 2, "192.168.255.254"},
{"192.168.0.0/16", 256*256 - 2, "192.168.255.254"},
{"10.0.0.0/8", 2 * 256, "10.0.2.0"},
{"10.0.0.0/8", 5 * 256, "10.0.5.0"},
{"10.0.0.0/8", 100 * 256 * 254, "10.99.255.254"},
*/
}
for _, d := range input {
assertNRequests(t, d.subnet, d.numReq, d.lastIP)
}
}
func TestRelease(t *testing.T) {
var (
subnet = "192.168.0.0/23"
)
a, err := getAllocator()
if err != nil {
t.Fatal(err)
}
pid, _, _, err := a.RequestPool(localAddressSpace, subnet, "", nil, false)
if err != nil {
t.Fatal(err)
}
bm := a.addresses[SubnetKey{localAddressSpace, subnet, ""}]
// Allocate all addresses
for err != ipamapi.ErrNoAvailableIPs {
_, _, err = a.RequestAddress(pid, nil, nil)
}
toRelease := []struct {
address string
}{
{"192.168.0.1"},
{"192.168.0.2"},
{"192.168.0.3"},
{"192.168.0.4"},
{"192.168.0.5"},
{"192.168.0.6"},
{"192.168.0.7"},
{"192.168.0.8"},
{"192.168.0.9"},
{"192.168.0.10"},
{"192.168.0.30"},
{"192.168.0.31"},
{"192.168.1.32"},
{"192.168.0.254"},
{"192.168.1.1"},
{"192.168.1.2"},
{"192.168.1.3"},
{"192.168.1.253"},
{"192.168.1.254"},
}
// One by one, relase the address and request again. We should get the same IP
for i, inp := range toRelease {
ip0 := net.ParseIP(inp.address)
a.ReleaseAddress(pid, ip0)
bm = a.addresses[SubnetKey{localAddressSpace, subnet, ""}]
if bm.Unselected() != 1 {
t.Fatalf("Failed to update free address count after release. Expected %d, Found: %d", i+1, bm.Unselected())
}
nw, _, err := a.RequestAddress(pid, nil, nil)
if err != nil {
t.Fatalf("Failed to obtain the address: %s", err.Error())
}
ip := nw.IP
if !ip0.Equal(ip) {
t.Fatalf("Failed to obtain the same address. Expected: %s, Got: %s", ip0, ip)
}
}
}
func assertGetAddress(t *testing.T, subnet string) {
var (
err error
printTime = false
a = &Allocator{}
)
_, sub, _ := net.ParseCIDR(subnet)
ones, bits := sub.Mask.Size()
zeroes := bits - ones
numAddresses := 1 << uint(zeroes)
bm, err := bitseq.NewHandle("ipam_test", nil, "default/"+subnet, uint64(numAddresses))
if err != nil {
t.Fatal(err)
}
start := time.Now()
run := 0
for err != ipamapi.ErrNoAvailableIPs {
_, err = a.getAddress(sub, bm, nil, nil)
run++
}
if printTime {
fmt.Printf("\nTaken %v, to allocate all addresses on %s. (nemAddresses: %d. Runs: %d)", time.Since(start), subnet, numAddresses, run)
}
if bm.Unselected() != 0 {
t.Fatalf("Unexpected free count after reserving all addresses: %d", bm.Unselected())
}
/*
if bm.Head.Block != expectedMax || bm.Head.Count != numBlocks {
t.Fatalf("Failed to effectively reserve all addresses on %s. Expected (0x%x, %d) as first sequence. Found (0x%x,%d)",
subnet, expectedMax, numBlocks, bm.Head.Block, bm.Head.Count)
}
*/
}
func assertNRequests(t *testing.T, subnet string, numReq int, lastExpectedIP string) {
var (
nw *net.IPNet
printTime = false
)
lastIP := net.ParseIP(lastExpectedIP)
a, err := getAllocator()
if err != nil {
t.Fatal(err)
}
pid, _, _, err := a.RequestPool(localAddressSpace, subnet, "", nil, false)
if err != nil {
t.Fatal(err)
}
i := 0
start := time.Now()
for ; i < numReq; i++ {
nw, _, err = a.RequestAddress(pid, nil, nil)
}
if printTime {
fmt.Printf("\nTaken %v, to allocate %d addresses on %s\n", time.Since(start), numReq, subnet)
}
if !lastIP.Equal(nw.IP) {
t.Fatalf("Wrong last IP. Expected %s. Got: %s (err: %v, ind: %d)", lastExpectedIP, nw.IP.String(), err, i)
}
}
func benchmarkRequest(b *testing.B, a *Allocator, subnet string) {
pid, _, _, err := a.RequestPool(localAddressSpace, subnet, "", nil, false)
for err != ipamapi.ErrNoAvailableIPs {
_, _, err = a.RequestAddress(pid, nil, nil)
}
}
func benchMarkRequest(subnet string, b *testing.B) {
a, _ := getAllocator()
for n := 0; n < b.N; n++ {
benchmarkRequest(b, a, subnet)
}
}
func BenchmarkRequest_24(b *testing.B) {
a, _ := getAllocator()
benchmarkRequest(b, a, "10.0.0.0/24")
}
func BenchmarkRequest_16(b *testing.B) {
a, _ := getAllocator()
benchmarkRequest(b, a, "10.0.0.0/16")
}
func BenchmarkRequest_8(b *testing.B) {
a, _ := getAllocator()
benchmarkRequest(b, a, "10.0.0.0/8")
}
func TestAllocateRandomDeallocate(t *testing.T) {
testAllocateRandomDeallocate(t, "172.25.0.0/16", "", 384)
testAllocateRandomDeallocate(t, "172.25.0.0/16", "172.25.252.0/22", 384)
}
func testAllocateRandomDeallocate(t *testing.T, pool, subPool string, num int) {
ds, err := randomLocalStore()
if err != nil {
t.Fatal(err)
}
a, err := NewAllocator(ds, nil)
if err != nil {
t.Fatal(err)
}
pid, _, _, err := a.RequestPool(localAddressSpace, pool, subPool, nil, false)
if err != nil {
t.Fatal(err)
}
// Allocate num ip addresses
indices := make(map[int]*net.IPNet, num)
allocated := make(map[string]bool, num)
for i := 0; i < num; i++ {
ip, _, err := a.RequestAddress(pid, nil, nil)
if err != nil {
t.Fatal(err)
}
ips := ip.String()
if _, ok := allocated[ips]; ok {
t.Fatalf("Address %s is already allocated", ips)
}
allocated[ips] = true
indices[i] = ip
}
if len(indices) != len(allocated) || len(indices) != num {
t.Fatalf("Unexpected number of allocated addresses: (%d,%d).", len(indices), len(allocated))
}
seed := time.Now().Unix()
rand.Seed(seed)
// Deallocate half of the allocated addresses following a random pattern
pattern := rand.Perm(num)
for i := 0; i < num/2; i++ {
idx := pattern[i]
ip := indices[idx]
err := a.ReleaseAddress(pid, ip.IP)
if err != nil {
t.Fatalf("Unexpected failure on deallocation of %s: %v.\nSeed: %d.", ip, err, seed)
}
delete(indices, idx)
delete(allocated, ip.String())
}
// Request a quarter of addresses
for i := 0; i < num/2; i++ {
ip, _, err := a.RequestAddress(pid, nil, nil)
if err != nil {
t.Fatal(err)
}
ips := ip.String()
if _, ok := allocated[ips]; ok {
t.Fatalf("\nAddress %s is already allocated.\nSeed: %d.", ips, seed)
}
allocated[ips] = true
}
if len(allocated) != num {
t.Fatalf("Unexpected number of allocated addresses: %d.\nSeed: %d.", len(allocated), seed)
}
}
func TestRetrieveFromStore(t *testing.T) {
num := 200
ds, err := randomLocalStore()
if err != nil {
t.Fatal(err)
}
a, err := NewAllocator(ds, nil)
if err != nil {
t.Fatal(err)
}
pid, _, _, err := a.RequestPool(localAddressSpace, "172.25.0.0/16", "", nil, false)
if err != nil {
t.Fatal(err)
}
for i := 0; i < num; i++ {
if _, _, err := a.RequestAddress(pid, nil, nil); err != nil {
t.Fatal(err)
}
}
// Restore
a1, err := NewAllocator(ds, nil)
if err != nil {
t.Fatal(err)
}
a1.refresh(localAddressSpace)
db := a.DumpDatabase()
db1 := a1.DumpDatabase()
if db != db1 {
t.Fatalf("Unexpected db change.\nExpected:%s\nGot:%s", db, db1)
}
checkDBEquality(a, a1, t)
pid, _, _, err = a1.RequestPool(localAddressSpace, "172.25.0.0/16", "172.25.1.0/24", nil, false)
if err != nil {
t.Fatal(err)
}
for i := 0; i < num/2; i++ {
if _, _, err := a1.RequestAddress(pid, nil, nil); err != nil {
t.Fatal(err)
}
}
// Restore
a2, err := NewAllocator(ds, nil)
if err != nil {
t.Fatal(err)
}
a2.refresh(localAddressSpace)
checkDBEquality(a1, a2, t)
pid, _, _, err = a2.RequestPool(localAddressSpace, "172.25.0.0/16", "172.25.2.0/24", nil, false)
if err != nil {
t.Fatal(err)
}
for i := 0; i < num/2; i++ {
if _, _, err := a2.RequestAddress(pid, nil, nil); err != nil {
t.Fatal(err)
}
}
// Restore
a3, err := NewAllocator(ds, nil)
if err != nil {
t.Fatal(err)
}
a3.refresh(localAddressSpace)
checkDBEquality(a2, a3, t)
pid, _, _, err = a3.RequestPool(localAddressSpace, "172.26.0.0/16", "", nil, false)
if err != nil {
t.Fatal(err)
}
for i := 0; i < num/2; i++ {
if _, _, err := a3.RequestAddress(pid, nil, nil); err != nil {
t.Fatal(err)
}
}
// Restore
a4, err := NewAllocator(ds, nil)
if err != nil {
t.Fatal(err)
}
a4.refresh(localAddressSpace)
checkDBEquality(a3, a4, t)
}
func checkDBEquality(a1, a2 *Allocator, t *testing.T) {
for k, cnf1 := range a1.addrSpaces[localAddressSpace].subnets {
cnf2 := a2.addrSpaces[localAddressSpace].subnets[k]
if cnf1.String() != cnf2.String() {
t.Fatalf("%s\n%s", cnf1, cnf2)
}
if cnf1.Range == nil {
a2.retrieveBitmask(k, cnf1.Pool)
}
}
for k, bm1 := range a1.addresses {
bm2 := a2.addresses[k]
if bm1.String() != bm2.String() {
t.Fatalf("%s\n%s", bm1, bm2)
}
}
}
const (
numInstances = 5
first = 0
last = numInstances - 1
)
var (
allocator *Allocator
start = make(chan struct{})
done = make(chan chan struct{}, numInstances-1)
pools = make([]*net.IPNet, numInstances)
)
func runParallelTests(t *testing.T, instance int) {
var err error
t.Parallel()
pTest := flag.Lookup("test.parallel")
if pTest == nil {
t.Skip("Skipped because test.parallel flag not set;")
}
numParallel, err := strconv.Atoi(pTest.Value.String())
if err != nil {
t.Fatal(err)
}
if numParallel < numInstances {
t.Skip("Skipped because t.parallel was less than ", numInstances)
}
// The first instance creates the allocator, gives the start
// and finally checks the pools each instance was assigned
if instance == first {
allocator, err = getAllocator()
if err != nil {
t.Fatal(err)
}
close(start)
}
if instance != first {
select {
case <-start:
}
instDone := make(chan struct{})
done <- instDone
defer close(instDone)
if instance == last {
defer close(done)
}
}
_, pools[instance], _, err = allocator.RequestPool(localAddressSpace, "", "", nil, false)
if err != nil {
t.Fatal(err)
}
if instance == first {
for instDone := range done {
select {
case <-instDone:
}
}
// Now check each instance got a different pool
for i := 0; i < numInstances; i++ {
for j := i + 1; j < numInstances; j++ {
if types.CompareIPNet(pools[i], pools[j]) {
t.Fatalf("Instance %d and %d were given the same predefined pool: %v", i, j, pools)
}
}
}
}
}
func TestParallelPredefinedRequest1(t *testing.T) {
runParallelTests(t, 0)
}
func TestParallelPredefinedRequest2(t *testing.T) {
runParallelTests(t, 1)
}
func TestParallelPredefinedRequest3(t *testing.T) {
runParallelTests(t, 2)
}
func TestParallelPredefinedRequest4(t *testing.T) {
runParallelTests(t, 3)
}
func TestParallelPredefinedRequest5(t *testing.T) {
runParallelTests(t, 4)
}