|
| 1 | +package main |
| 2 | + |
| 3 | +import ( |
| 4 | + "errors" |
| 5 | + "fmt" |
| 6 | + "net" |
| 7 | + "os" |
| 8 | + "time" |
| 9 | + |
| 10 | + "github.com/imroc/req/v3" |
| 11 | +) |
| 12 | + |
| 13 | +type ConnectorState int |
| 14 | + |
| 15 | +const ( |
| 16 | + ConnectorStateBroken ConnectorState = iota |
| 17 | + ConnectorStateConnecting |
| 18 | + ConnectorStateWaiting |
| 19 | + ConnectorStateConnected |
| 20 | + ConnectorStateUploaded |
| 21 | + ConnectorStatePrintingPrepared |
| 22 | + ConnectorStatePrinting |
| 23 | + ConnectorStatePrinted |
| 24 | + ConnectorStatePrintStopped |
| 25 | + ConnectorStateDisconnected |
| 26 | + ConnectorStateDiscovering |
| 27 | + ConnectorStateDiscovered |
| 28 | +) |
| 29 | + |
| 30 | +const ( |
| 31 | + toolHead3DP = 1 |
| 32 | + toolHeadCNC = 2 |
| 33 | + toolHeadLaser = 3 |
| 34 | + toolHeadLaser10 = 4 |
| 35 | +) |
| 36 | + |
| 37 | +type Connector struct { |
| 38 | + Target *Machine |
| 39 | + State chan ConnectorState |
| 40 | + Error error // last error |
| 41 | + UploadCallback func(req.UploadInfo) |
| 42 | + PrintCallback func() |
| 43 | + ToolHead int |
| 44 | + client *req.Client |
| 45 | + cancel chan bool |
| 46 | +} |
| 47 | + |
| 48 | +func NewConnector() *Connector { |
| 49 | + client := req.C() |
| 50 | + client.SetCommonHeader("User-Agent", "sm2uploader/0.1") |
| 51 | + client.SetCommonHeader("Cache-Control", "no-cache") |
| 52 | + client.SetCommonHeader("Connection", "keep-alive") |
| 53 | + // client.EnableDumpAllWithoutRequestBody() |
| 54 | + // client.EnableDumpAll() |
| 55 | + |
| 56 | + return &Connector{ |
| 57 | + State: make(chan ConnectorState, 1), |
| 58 | + Target: nil, |
| 59 | + Error: nil, |
| 60 | + UploadCallback: nil, |
| 61 | + client: client, |
| 62 | + cancel: make(chan bool, 1), |
| 63 | + } |
| 64 | +} |
| 65 | + |
| 66 | +func (conn *Connector) setState(state ConnectorState) { conn.State <- state } |
| 67 | + |
| 68 | +func (conn *Connector) Cancel() { conn.cancel <- true } |
| 69 | + |
| 70 | +func (conn *Connector) broken(err any) { |
| 71 | + if err != nil { |
| 72 | + switch err.(type) { |
| 73 | + case string: |
| 74 | + conn.Error = errors.New(err.(string)) |
| 75 | + case error: |
| 76 | + conn.Error = err.(error) |
| 77 | + } |
| 78 | + } |
| 79 | + conn.setState(ConnectorStateBroken) |
| 80 | +} |
| 81 | + |
| 82 | +func (conn *Connector) Discover(timeout time.Duration) <-chan *Machine { |
| 83 | + conn.setState(ConnectorStateDiscovering) |
| 84 | + |
| 85 | + ret := make(chan *Machine) |
| 86 | + |
| 87 | + src := &net.UDPAddr{IP: net.IPv4zero, Port: 0} |
| 88 | + dst := &net.UDPAddr{IP: net.ParseIP("255.255.255.255"), Port: 20054} |
| 89 | + c, err := net.ListenUDP("udp4", src) |
| 90 | + if err != nil { |
| 91 | + conn.broken(err) |
| 92 | + return ret |
| 93 | + } |
| 94 | + |
| 95 | + c.SetDeadline(time.Now().Add(timeout * time.Second)) |
| 96 | + _, err = c.WriteToUDP([]byte("discover"), dst) |
| 97 | + if err != nil { |
| 98 | + conn.broken(err) |
| 99 | + return ret |
| 100 | + } |
| 101 | + |
| 102 | + go func() { |
| 103 | + defer close(ret) |
| 104 | + |
| 105 | + for { |
| 106 | + data := make([]byte, 512) |
| 107 | + n, addr, err := c.ReadFromUDP(data) |
| 108 | + if err != nil { // timeout |
| 109 | + conn.setState(ConnectorStateDiscovered) |
| 110 | + break |
| 111 | + } |
| 112 | + if n > 0 { |
| 113 | + // fmt.Printf("read %s from <%s>\n", data[:n], addr) |
| 114 | + machine, err := NewMachine(addr, data[:n]) |
| 115 | + if err == nil { |
| 116 | + ret <- machine |
| 117 | + } |
| 118 | + // ignore invalid response |
| 119 | + } |
| 120 | + } |
| 121 | + }() |
| 122 | + return ret |
| 123 | +} |
| 124 | + |
| 125 | +func (conn *Connector) request(timeout ...int) *req.Request { |
| 126 | + t := 0 |
| 127 | + if len(timeout) > 0 { |
| 128 | + t = timeout[0] |
| 129 | + } |
| 130 | + req := conn.client.SetTimeout(time.Duration(t) * time.Second).R() |
| 131 | + // for POST |
| 132 | + req.SetFormData(map[string]string{"token": conn.Target.Token}) |
| 133 | + // for GET |
| 134 | + req.SetQueryParam("token", conn.Target.Token) |
| 135 | + // no cache |
| 136 | + req.SetQueryParam("_", fmt.Sprintf("%d", time.Now().Unix())) |
| 137 | + return req |
| 138 | +} |
| 139 | + |
| 140 | +func (conn *Connector) Connect() { |
| 141 | + conn.setState(ConnectorStateConnecting) |
| 142 | + |
| 143 | + api := conn.Target.URL("/connect") |
| 144 | + |
| 145 | + type data struct { |
| 146 | + Token string `json:"token"` |
| 147 | + HeadType uint `json:"headType"` |
| 148 | + // Readonly string `json:"readonly"` |
| 149 | + // Series string `json:"series"` |
| 150 | + // HasEnclosure bool `json:"hasEnclosure"` |
| 151 | + } |
| 152 | + result := &data{} |
| 153 | + resp, err := conn.request(3).SetResult(result).Post(api) |
| 154 | + if err != nil { |
| 155 | + conn.broken(err) |
| 156 | + return |
| 157 | + } |
| 158 | + |
| 159 | + if resp.IsError() { |
| 160 | + conn.broken(fmt.Sprintf("error code: %d from %s", resp.StatusCode, api)) |
| 161 | + return |
| 162 | + } |
| 163 | + |
| 164 | + conn.setToken(result.Token) |
| 165 | + |
| 166 | + go conn.startHeartbeat() |
| 167 | +} |
| 168 | + |
| 169 | +func (conn *Connector) Disconnect() { |
| 170 | + // conn.setState(ConnectorStateDisconnecting) |
| 171 | + |
| 172 | + api := conn.Target.URL("/disconnect") |
| 173 | + resp, err := conn.request(2).Post(api) |
| 174 | + if err == nil && resp.IsSuccess() { |
| 175 | + conn.setState(ConnectorStateDisconnected) |
| 176 | + } else { |
| 177 | + conn.setState(ConnectorStateBroken) |
| 178 | + } |
| 179 | +} |
| 180 | + |
| 181 | +func (conn *Connector) heartbeat() int { |
| 182 | + api := conn.Target.URL("/status") |
| 183 | + |
| 184 | + /* |
| 185 | + type data struct { |
| 186 | + Status string `json:"status"` // IDLE/RUNNING/STOPPED/PAUSED |
| 187 | + // ToolHead string `json:"toolHead"` // TOOLHEAD_3DPRINTING_1 |
| 188 | + // PrintStatus string `json:"printStatus"` // Complete |
| 189 | + // IsFilamentOut bool `json:"isFilamentOut"` |
| 190 | + } |
| 191 | + result := &data{} |
| 192 | + */ |
| 193 | + // if resp, err := conn.request().SetResult(result).Get(api); err == nil { |
| 194 | + |
| 195 | + if resp, err := conn.request(3).Get(api); err == nil { |
| 196 | + return resp.StatusCode |
| 197 | + } |
| 198 | + return -1 |
| 199 | +} |
| 200 | + |
| 201 | +func (conn *Connector) startHeartbeat() { |
| 202 | + ticker := time.NewTicker(3 * time.Second) |
| 203 | + defer ticker.Stop() |
| 204 | + |
| 205 | + for { |
| 206 | + switch conn.heartbeat() { |
| 207 | + case 200: |
| 208 | + conn.setState(ConnectorStateConnected) |
| 209 | + case 204: |
| 210 | + conn.setState(ConnectorStateWaiting) |
| 211 | + default: |
| 212 | + conn.broken("Machine was not connected") |
| 213 | + return |
| 214 | + } |
| 215 | + |
| 216 | + select { |
| 217 | + case <-ticker.C: |
| 218 | + continue |
| 219 | + case <-conn.cancel: |
| 220 | + return |
| 221 | + } |
| 222 | + } |
| 223 | +} |
| 224 | + |
| 225 | +func (conn *Connector) Upload(name string, file *os.File) { |
| 226 | + url := conn.Target.URL("/upload") |
| 227 | + r := conn.request(60) |
| 228 | + r.SetUploadCallback(conn.UploadCallback) |
| 229 | + r.SetFileReader("file", name, file) |
| 230 | + conn.do(r.Post, url, ConnectorStateUploaded) |
| 231 | +} |
| 232 | + |
| 233 | +func (conn *Connector) PreparePrint(name string, file *os.File) { |
| 234 | + url := conn.Target.URL("/prepare_print") |
| 235 | + r := conn.request(60) |
| 236 | + r.SetFormData(map[string]string{"type": "3DP"}) |
| 237 | + r.SetUploadCallback(conn.UploadCallback) |
| 238 | + r.SetFileReader("file", name, file) |
| 239 | + conn.do(r.Post, url, ConnectorStatePrintingPrepared) |
| 240 | +} |
| 241 | + |
| 242 | +func (conn *Connector) StartPrint() { |
| 243 | + url := conn.Target.URL("/start_print") |
| 244 | + conn.do(conn.request(60).Post, url, ConnectorStatePrinting) |
| 245 | +} |
| 246 | + |
| 247 | +func (conn *Connector) StopPrint() { |
| 248 | + url := conn.Target.URL("/stop_print") |
| 249 | + conn.do(conn.request(5).Post, url, ConnectorStatePrintStopped) |
| 250 | +} |
| 251 | + |
| 252 | +func (conn *Connector) do(req func(string) (*req.Response, error), url string, state ConnectorState) { |
| 253 | + if resp, err := req(url); err != nil { |
| 254 | + conn.broken(err) |
| 255 | + } else if resp.IsError() { |
| 256 | + conn.broken(resp.Status) |
| 257 | + } else { |
| 258 | + conn.setState(state) |
| 259 | + } |
| 260 | +} |
| 261 | + |
| 262 | +func (conn *Connector) setToken(token string) { conn.Target.Token = token } |
| 263 | + |
| 264 | +func Probe(ip string) bool { |
| 265 | + url := "http://" + ip + ":8080/api/v1/enclosure?token=fake" |
| 266 | + if resp, err := req.C().SetTimeout(2 * time.Second).R().Get(url); err == nil { |
| 267 | + if resp.StatusCode == 401 { // 401 UNAUTHORIZED |
| 268 | + return true |
| 269 | + } |
| 270 | + } |
| 271 | + return false |
| 272 | +} |
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