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Signed-off-by: Oleg Vasilev <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,196 @@ | ||
| package ipam_test | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "testing" | ||
| "time" | ||
|
|
||
| nadv1 "github.com/k8snetworkplumbingwg/network-attachment-definition-client/pkg/apis/k8s.cni.cncf.io/v1" | ||
| nadfake "github.com/k8snetworkplumbingwg/network-attachment-definition-client/pkg/client/clientset/versioned/fake" | ||
| "github.com/stretchr/testify/assert" | ||
| "github.com/stretchr/testify/require" | ||
| "go.uber.org/zap" | ||
|
|
||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/apimachinery/pkg/types" | ||
| kfake "k8s.io/client-go/kubernetes/fake" | ||
|
|
||
| vmv1 "github.com/neondatabase/autoscaling/neonvm/apis/neonvm/v1" | ||
| nfake "github.com/neondatabase/autoscaling/neonvm/client/clientset/versioned/fake" | ||
| "github.com/neondatabase/autoscaling/pkg/neonvm/ipam" | ||
| "github.com/neondatabase/autoscaling/pkg/util/taskgroup" | ||
| ) | ||
|
|
||
| func makeIPAM(t *testing.T, cfg string) *ipam.IPAM { | ||
| client := ipam.Client{ | ||
| KubeClient: kfake.NewSimpleClientset(), | ||
| VMClient: nfake.NewSimpleClientset(), | ||
| NADClient: nadfake.NewSimpleClientset(), | ||
| } | ||
| _, err := client.NADClient.K8sCniCncfIoV1().NetworkAttachmentDefinitions("default").Create(context.Background(), &nadv1.NetworkAttachmentDefinition{ | ||
| TypeMeta: metav1.TypeMeta{ | ||
| Kind: "NetworkAttachmentDefinition", | ||
| APIVersion: "k8s.cni.cncf.io/v1", | ||
| }, | ||
| ObjectMeta: metav1.ObjectMeta{ | ||
| Name: "nad", | ||
| }, | ||
| Spec: nadv1.NetworkAttachmentDefinitionSpec{ | ||
| Config: fmt.Sprintf(`{"ipam":%s}`, cfg), | ||
| }, | ||
| }, metav1.CreateOptions{}) | ||
| require.NoError(t, err) | ||
|
|
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| ipam, err := ipam.NewWithClient(&client, "nad", "default") | ||
| require.NoError(t, err) | ||
|
|
||
| return ipam | ||
| } | ||
|
|
||
| func TestIPAM(t *testing.T) { | ||
| ipam := makeIPAM(t, | ||
| `{ | ||
| "ipRanges": [ | ||
| { | ||
| "range":"10.100.123.0/24", | ||
| "range_start":"10.100.123.1", | ||
| "range_end":"10.100.123.254", | ||
| "network_name":"nad" | ||
| } | ||
| ] | ||
| }`, | ||
| ) | ||
|
|
||
| defer ipam.Close() | ||
|
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| name := types.NamespacedName{ | ||
| Namespace: "default", | ||
| Name: "vm", | ||
| } | ||
|
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||
| ip1, err := ipam.AcquireIP(context.Background(), name) | ||
| require.NoError(t, err) | ||
| require.NotNil(t, ip1) | ||
| assert.Equal(t, "10.100.123.1/24", ip1.String()) | ||
|
|
||
| // Same VM - same IP | ||
| ipResult, err := ipam.AcquireIP(context.Background(), name) | ||
| require.NoError(t, err) | ||
| require.NotNil(t, ipResult) | ||
| assert.Equal(t, ip1, ipResult) | ||
|
|
||
| // Different VM - different IP | ||
| name.Name = "vm2" | ||
| ip2, err := ipam.AcquireIP(context.Background(), name) | ||
| require.NoError(t, err) | ||
| require.NotNil(t, ip2) | ||
| assert.Equal(t, "10.100.123.2/24", ip2.String()) | ||
|
|
||
| // Release the second IP | ||
| ipResult, err = ipam.ReleaseIP(context.Background(), name) | ||
| require.NoError(t, err) | ||
| require.Equal(t, ip2, ipResult) | ||
|
|
||
| // Allocate it again | ||
| name.Name = "vm3" | ||
| ip3, err := ipam.AcquireIP(context.Background(), name) | ||
| require.NoError(t, err) | ||
| require.NotNil(t, ip3) | ||
| assert.Equal(t, ip2, ip3) | ||
| } | ||
|
|
||
| func TestIPAMCleanup(t *testing.T) { | ||
| ipam := makeIPAM(t, | ||
| `{ | ||
| "ipRanges": [ | ||
| { | ||
| "range":"10.100.123.0/24", | ||
| "range_start":"10.100.123.1", | ||
| "range_end":"10.100.123.254" | ||
| } | ||
| ], | ||
| "network_name":"nadNetworkName" | ||
| }`, | ||
| ) | ||
|
|
||
| defer ipam.Close() | ||
|
|
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| name := types.NamespacedName{ | ||
| Namespace: "default", | ||
| Name: "vm", | ||
| } | ||
|
|
||
| ip, err := ipam.AcquireIP(context.Background(), name) | ||
| require.NoError(t, err) | ||
| require.NotNil(t, ip) | ||
|
|
||
| lst, err := ipam.Client.VMClient.NeonvmV1().IPPools("default").List(context.Background(), metav1.ListOptions{}) | ||
| require.NoError(t, err) | ||
| require.NotNil(t, lst) | ||
|
|
||
| getIPPool := func() *vmv1.IPPool { | ||
| ipPool, err := ipam.Client.VMClient.NeonvmV1().IPPools("default").Get(context.Background(), "nadNetworkName-10.100.123.0-24", metav1.GetOptions{}) | ||
| require.NoError(t, err) | ||
| require.NotNil(t, ipPool) | ||
| return ipPool | ||
| } | ||
|
|
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| ipPool := getIPPool() | ||
|
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| assert.Equal(t, ipPool.Spec.Range, "10.100.123.0/24") | ||
| assert.Equal(t, map[string]vmv1.IPAllocation{ | ||
| // IP offset: allocation | ||
| "1": { | ||
| ContainerID: "default/vm", | ||
| PodRef: "", | ||
| }, | ||
| }, ipPool.Spec.Allocations) | ||
|
|
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| name2 := types.NamespacedName{ | ||
| Namespace: "default", | ||
| Name: "vm2", | ||
| } | ||
| ip2, err := ipam.AcquireIP(context.Background(), name2) | ||
| require.NoError(t, err) | ||
| require.NotNil(t, ip2) | ||
| assert.Equal(t, ip2.String(), "10.100.123.2/24") | ||
|
|
||
| // Let's create only the second VM | ||
| // The cleanup will release the first IP, but will keep the second | ||
| result, err := ipam.Client.VMClient.NeonvmV1().VirtualMachines("default").Create(context.Background(), &vmv1.VirtualMachine{ | ||
| ObjectMeta: metav1.ObjectMeta{ | ||
| Name: "vm2", | ||
| }, | ||
| }, metav1.CreateOptions{}) | ||
| require.NoError(t, err) | ||
| require.NotNil(t, result) | ||
|
|
||
| ipPool = getIPPool() | ||
| assert.Len(t, ipPool.Spec.Allocations, 2) | ||
|
|
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| ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second) | ||
| defer cancel() | ||
|
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| tg := taskgroup.NewGroup(zap.NewNop()) | ||
|
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| defer tg.Wait() //nolint:errcheck // always nil | ||
|
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| tg.Go("cleanup", func(logger *zap.Logger) error { | ||
| err := ipam.RunCleanup(ctx, "default") | ||
| require.ErrorContains(t, err, "context canceled") | ||
| return nil | ||
| }) | ||
|
|
||
| for i := 0; i < 100; i++ { | ||
| ipPool = getIPPool() | ||
| if len(ipPool.Spec.Allocations) == 1 { | ||
| // Test succeeded | ||
| assert.Equal(t, ipPool.Spec.Allocations["2"].ContainerID, "default/vm2") | ||
| cancel() | ||
| return | ||
| } | ||
| time.Sleep(100 * time.Millisecond) | ||
| } | ||
| require.Fail(t, "cleanup did not finish", ipPool.Spec.Allocations) | ||
| } |