| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package l2topology |
| 4 | |
| 5 | import ( |
| 6 | "math" |
| 7 | "strconv" |
| 8 | "strings" |
| 9 | "time" |
| 10 | ) |
| 11 | |
| 12 | func topologyCanonicalPortName(attrs map[string]any) string { |
| 13 | if name := topologyAttrString(attrs, "port_name"); name != "" { |
| 14 | return name |
| 15 | } |
| 16 | if name := topologyAttrString(attrs, "if_name"); name != "" { |
| 17 | return name |
| 18 | } |
| 19 | if name := topologyAttrString(attrs, "if_descr"); name != "" { |
| 20 | return name |
| 21 | } |
| 22 | if name := topologyAttrString(attrs, "if_alias"); name != "" { |
| 23 | return name |
| 24 | } |
| 25 | |
| 26 | if ifIndex := topologyAttrInt(attrs, "if_index"); ifIndex > 0 { |
| 27 | return strconv.Itoa(ifIndex) |
| 28 | } |
| 29 | |
| 30 | if portID := topologyAttrString(attrs, "port_id"); portID != "" { |
| 31 | if n, err := strconv.Atoi(strings.TrimSpace(portID)); err == nil && n > 0 { |
| 32 | return strconv.Itoa(n) |
| 33 | } |
| 34 | return portID |
| 35 | } |
| 36 | if bridgePort := topologyAttrString(attrs, "bridge_port"); bridgePort != "" { |
| 37 | if n, err := strconv.Atoi(strings.TrimSpace(bridgePort)); err == nil && n > 0 { |
| 38 | return strconv.Itoa(n) |
| 39 | } |
| 40 | return bridgePort |
| 41 | } |
| 42 | return "" |
| 43 | } |
| 44 | |
| 45 | func topologyCanonicalLinkName(srcName, srcPortName, dstName, dstPortName string) string { |
| 46 | srcName = strings.TrimSpace(srcName) |
| 47 | if srcName == "" { |
| 48 | srcName = "[unset]" |
| 49 | } |
| 50 | dstName = strings.TrimSpace(dstName) |
| 51 | if dstName == "" { |
| 52 | dstName = "[unset]" |
| 53 | } |
| 54 | srcPortName = strings.TrimSpace(srcPortName) |
| 55 | if srcPortName == "" { |
| 56 | srcPortName = "[unset]" |
| 57 | } |
| 58 | dstPortName = strings.TrimSpace(dstPortName) |
| 59 | if dstPortName == "" { |
| 60 | dstPortName = "[unset]" |
| 61 | } |
| 62 | return srcName + ":" + srcPortName + " -> " + dstName + ":" + dstPortName |
| 63 | } |
| 64 | |
| 65 | func topologyAttrString(attrs map[string]any, key string) string { |
| 66 | if len(attrs) == 0 { |
| 67 | return "" |
| 68 | } |
| 69 | value, ok := attrs[key] |
| 70 | if !ok || value == nil { |
| 71 | return "" |
| 72 | } |
| 73 | str, ok := value.(string) |
| 74 | if !ok { |
| 75 | return "" |
| 76 | } |
| 77 | return strings.TrimSpace(str) |
| 78 | } |
| 79 | |
| 80 | func topologyAttrInt(attrs map[string]any, key string) int { |
| 81 | if len(attrs) == 0 { |
| 82 | return 0 |
| 83 | } |
| 84 | value, ok := attrs[key] |
| 85 | if !ok || value == nil { |
| 86 | return 0 |
| 87 | } |
| 88 | switch typed := value.(type) { |
| 89 | case int: |
| 90 | return typed |
| 91 | case int64: |
| 92 | if typed < 0 { |
| 93 | return 0 |
| 94 | } |
| 95 | if typed > math.MaxInt { |
| 96 | return math.MaxInt |
| 97 | } |
| 98 | return int(typed) |
| 99 | case float64: |
| 100 | if typed <= 0 { |
| 101 | return 0 |
| 102 | } |
| 103 | if typed > math.MaxInt { |
| 104 | return math.MaxInt |
| 105 | } |
| 106 | return int(typed) |
| 107 | case string: |
| 108 | parsed, err := strconv.Atoi(strings.TrimSpace(typed)) |
| 109 | if err != nil || parsed <= 0 { |
| 110 | return 0 |
| 111 | } |
| 112 | return parsed |
| 113 | default: |
| 114 | return 0 |
| 115 | } |
| 116 | } |
| 117 | |
| 118 | func topologyAttrStringSlice(attrs map[string]any, key string) []string { |
| 119 | if len(attrs) == 0 { |
| 120 | return nil |
| 121 | } |
| 122 | value, ok := attrs[key] |
| 123 | if !ok || value == nil { |
| 124 | return nil |
| 125 | } |
| 126 | switch typed := value.(type) { |
| 127 | case []string: |
| 128 | return append([]string(nil), typed...) |
| 129 | case []any: |
| 130 | out := make([]string, 0, len(typed)) |
| 131 | for _, item := range typed { |
| 132 | str, ok := item.(string) |
| 133 | if !ok { |
| 134 | continue |
| 135 | } |
| 136 | if str = strings.TrimSpace(str); str != "" { |
| 137 | out = append(out, str) |
| 138 | } |
| 139 | } |
| 140 | return out |
| 141 | default: |
| 142 | return nil |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | func topologyTimePtr(t time.Time) *time.Time { |
| 147 | if t.IsZero() { |
| 148 | return nil |
| 149 | } |
| 150 | out := t |
| 151 | return &out |
| 152 | } |