|
| 1 | +package network |
| 2 | + |
| 3 | +import ( |
| 4 | + "errors" |
| 5 | + "net" |
| 6 | + |
| 7 | + "github.com/Azure/azure-container-networking/cni" |
| 8 | + "github.com/containernetworking/cni/pkg/skel" |
| 9 | + "github.com/containernetworking/cni/pkg/types/current" |
| 10 | +) |
| 11 | + |
| 12 | +const ( |
| 13 | + subnetBits = 24 |
| 14 | + ipv4Bits = 32 |
| 15 | + subnetv6Bits = 64 |
| 16 | + ipv6Bits = 128 |
| 17 | +) |
| 18 | + |
| 19 | +var ( |
| 20 | + errV4 = errors.New("v4 fail") |
| 21 | + errV6 = errors.New("v6 Fail") |
| 22 | + errDeleteIpam = errors.New("delete fail") |
| 23 | +) |
| 24 | + |
| 25 | +type MockIpamInvoker struct { |
| 26 | + isIPv6 bool |
| 27 | + v4Fail bool |
| 28 | + v6Fail bool |
| 29 | + ipMap map[string]bool |
| 30 | +} |
| 31 | + |
| 32 | +func NewMockIpamInvoker(ipv6, v4Fail, v6Fail bool) *MockIpamInvoker { |
| 33 | + return &MockIpamInvoker{ |
| 34 | + isIPv6: ipv6, |
| 35 | + v4Fail: v4Fail, |
| 36 | + v6Fail: v6Fail, |
| 37 | + ipMap: make(map[string]bool), |
| 38 | + } |
| 39 | +} |
| 40 | + |
| 41 | +func (invoker *MockIpamInvoker) Add(nwCfg *cni.NetworkConfig, _ *skel.CmdArgs, subnetPrefix *net.IPNet, options map[string]interface{}) (v4, v6 *current.Result, err error) { |
| 42 | + var resultV6 *current.Result |
| 43 | + |
| 44 | + if invoker.v4Fail { |
| 45 | + return nil, nil, errV4 |
| 46 | + } |
| 47 | + |
| 48 | + result := ¤t.Result{} |
| 49 | + |
| 50 | + ipv4Str := "10.240.0.5" |
| 51 | + if _, ok := invoker.ipMap["10.240.0.5/24"]; ok { |
| 52 | + ipv4Str = "10.240.0.6" |
| 53 | + } |
| 54 | + |
| 55 | + ip := net.ParseIP(ipv4Str) |
| 56 | + ipnet := net.IPNet{IP: ip, Mask: net.CIDRMask(subnetBits, ipv4Bits)} |
| 57 | + gwIP := net.ParseIP("10.240.0.1") |
| 58 | + ipConfig := ¤t.IPConfig{Address: ipnet, Gateway: gwIP, Version: "4"} |
| 59 | + result.IPs = append(result.IPs, ipConfig) |
| 60 | + invoker.ipMap[ipnet.String()] = true |
| 61 | + if invoker.v6Fail { |
| 62 | + return result, nil, errV6 |
| 63 | + } |
| 64 | + |
| 65 | + if invoker.isIPv6 { |
| 66 | + resultV6 = ¤t.Result{} |
| 67 | + ipv6Str := "fc00::2" |
| 68 | + if _, ok := invoker.ipMap["fc00::2/128"]; ok { |
| 69 | + ipv6Str = "fc00::3" |
| 70 | + } |
| 71 | + |
| 72 | + ip := net.ParseIP(ipv6Str) |
| 73 | + ipnet := net.IPNet{IP: ip, Mask: net.CIDRMask(subnetv6Bits, ipv6Bits)} |
| 74 | + gwIP := net.ParseIP("fc00::1") |
| 75 | + ipConfig := ¤t.IPConfig{Address: ipnet, Gateway: gwIP, Version: "6"} |
| 76 | + resultV6.IPs = append(resultV6.IPs, ipConfig) |
| 77 | + invoker.ipMap[ipnet.String()] = true |
| 78 | + } |
| 79 | + |
| 80 | + return result, resultV6, nil |
| 81 | +} |
| 82 | + |
| 83 | +func (invoker *MockIpamInvoker) Delete(address *net.IPNet, nwCfg *cni.NetworkConfig, _ *skel.CmdArgs, options map[string]interface{}) error { |
| 84 | + if invoker.v4Fail || invoker.v6Fail { |
| 85 | + return errDeleteIpam |
| 86 | + } |
| 87 | + |
| 88 | + if address == nil { |
| 89 | + return errDeleteIpam |
| 90 | + } |
| 91 | + |
| 92 | + if _, ok := invoker.ipMap[address.String()]; !ok { |
| 93 | + return errDeleteIpam |
| 94 | + } |
| 95 | + delete(invoker.ipMap, address.String()) |
| 96 | + return nil |
| 97 | +} |
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