Sergiusz Bazanski | 1fad2e5 | 2019-08-01 20:16:27 +0200 | [diff] [blame] | 1 | package model |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "fmt" |
| 6 | "net" |
| 7 | "strconv" |
| 8 | ) |
| 9 | |
| 10 | func (m *sqlModel) GetCheckablePeers(ctx context.Context) ([]*Peer, error) { |
| 11 | |
| 12 | data := []struct { |
| 13 | sqlPeer `db:"peers"` |
| 14 | sqlPeerRouter `db:"peer_routers"` |
| 15 | }{} |
| 16 | q := ` |
| 17 | SELECT |
| 18 | peers.id "peers.id", |
| 19 | peers.asn "peers.asn", |
| 20 | peers.name "peers.name", |
| 21 | |
| 22 | peer_routers.peer_id "peer_routers.peer_id", |
| 23 | peer_routers.v6 "peer_routers.v6", |
| 24 | peer_routers.v4 "peer_routers.v4" |
| 25 | FROM peers |
| 26 | LEFT JOIN peer_routers |
| 27 | ON peer_routers.peer_id = peers.id |
| 28 | ` |
| 29 | if err := m.db.SelectContext(ctx, &data, q); err != nil { |
| 30 | return nil, fmt.Errorf("SELECT peers/peerRouters: %v", err) |
| 31 | } |
| 32 | |
| 33 | // Collapse peers into map |
| 34 | // ID -> Peer |
| 35 | peers := make(map[string]*Peer) |
| 36 | |
| 37 | for _, row := range data { |
| 38 | peer, ok := peers[row.sqlPeer.ID] |
| 39 | if !ok { |
| 40 | asn, err := strconv.ParseInt(row.sqlPeer.ASN, 10, 64) |
| 41 | if err != nil { |
| 42 | return nil, fmt.Errorf("data corruption: invalid ASN %q", row.sqlPeer.ASN) |
| 43 | } |
| 44 | peer = &Peer{ |
| 45 | ASN: asn, |
| 46 | Name: row.sqlPeer.Name, |
| 47 | Routers: []*Router{}, |
| 48 | } |
| 49 | peers[row.sqlPeer.ID] = peer |
| 50 | } |
| 51 | |
| 52 | var v6 net.IP |
| 53 | var v4 net.IP |
| 54 | |
| 55 | if row.sqlPeerRouter.V6.Valid { |
| 56 | v6 = net.ParseIP(row.sqlPeerRouter.V6.String) |
| 57 | } |
| 58 | if row.sqlPeerRouter.V4.Valid { |
| 59 | v4 = net.ParseIP(row.sqlPeerRouter.V4.String) |
| 60 | } |
| 61 | |
| 62 | peer.Routers = append(peer.Routers, &Router{ |
| 63 | V6: v6, |
| 64 | V4: v4, |
| 65 | }) |
| 66 | } |
| 67 | |
| 68 | res := make([]*Peer, len(peers)) |
| 69 | i := 0 |
| 70 | for _, peer := range peers { |
| 71 | res[i] = peer |
| 72 | i += 1 |
| 73 | } |
| 74 | |
| 75 | return res, nil |
| 76 | } |