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Socket connection to provide ability to start different project build…
… from script.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,136 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "bufio" | ||
| "fmt" | ||
| "log" | ||
| "net" | ||
| "os" | ||
| ) | ||
|
|
||
| type socketAction byte | ||
| type socketResponse byte | ||
|
|
||
| const ( | ||
| socketActionStart socketAction = iota + 1 | ||
| ) | ||
|
|
||
| const ( | ||
| socketResponseOk socketResponse = iota | ||
| socketResponseFail | ||
| ) | ||
|
|
||
| const ( | ||
| envSocketPort = "LURCH_SOCKET_PORT" | ||
| envSocketToken = "LURCH_SOCKET_TOKEN" | ||
| ) | ||
|
|
||
| type socketServerContext struct { | ||
| port int | ||
| c *Context | ||
| j *Job | ||
| l net.Listener | ||
| token string | ||
| } | ||
|
|
||
| type socketData struct { | ||
| token string | ||
| action socketAction | ||
| length int | ||
| data string | ||
| } | ||
|
|
||
| func (s *socketServerContext) parseSocketData(str string) *socketData { | ||
| result := &socketData{} | ||
| _, err := fmt.Sscanf(str, "%s %d %d %s", &result.token, &result.action, &result.length, &result.data) | ||
|
|
||
| if err != nil || len(result.data) != result.length || s.token != result.token { | ||
| return nil | ||
| } | ||
| return result | ||
| } | ||
|
|
||
| func (s *socketData) String() string { | ||
| s.length = len(s.data) | ||
| return fmt.Sprintf("%s %d %d %s", s.token, s.action, s.length, s.data) | ||
| } | ||
|
|
||
| func startServerSocket(c *Context, j *Job) *socketServerContext { | ||
| s := &socketServerContext{c: c, j: j, token: randomToken(32)} | ||
|
|
||
| var err error | ||
| s.l, err = net.Listen("tcp", "localhost:0") | ||
| if err != nil { | ||
| log.Print("could not start server socket for ", j.p.name, " #", j.name) | ||
| return nil | ||
| } | ||
|
|
||
| address := s.l.Addr().(*net.TCPAddr) | ||
| s.port = address.Port | ||
|
|
||
| go s.handle() | ||
|
|
||
| return s | ||
| } | ||
|
|
||
| func (s *socketServerContext) handle() { | ||
| for { | ||
| con, err := s.l.Accept() | ||
| if err != nil { | ||
| break | ||
| } | ||
|
|
||
| msg, err := bufio.NewReader(con).ReadString('\n') | ||
| if err != nil { | ||
| break | ||
| } | ||
| d := s.parseSocketData(msg) | ||
| if d == nil { | ||
| log.Print("incomming data are not valid") | ||
| con.Write([]byte{byte(socketResponseFail), '\n'}) | ||
| con.Close() | ||
| continue | ||
| } | ||
|
|
||
| response := socketResponseFail | ||
|
|
||
| switch d.action { | ||
| case socketActionStart: | ||
| p := s.c.OpenProject(d.data) | ||
| if p != nil { | ||
| if r := s.c.StartJob(p, nil); r != "" { | ||
| response = socketResponseOk | ||
| } | ||
| } | ||
| } | ||
|
|
||
| con.Write([]byte{byte(response), '\n'}) | ||
| con.Close() | ||
| } | ||
| } | ||
|
|
||
| func (s *socketServerContext) stop() { | ||
| s.l.Close() | ||
| } | ||
|
|
||
| func makeSocketClientAction(action socketAction, data string) int { | ||
| s := &socketData{action: action, data: data} | ||
| s.token = os.Getenv(envSocketToken) | ||
|
|
||
| con, err := net.Dial("tcp", fmt.Sprintf("localhost:%s", os.Getenv(envSocketPort))) | ||
| if err != nil { | ||
| log.Println(err) | ||
| return int(socketResponseFail) | ||
| } | ||
| defer con.Close() | ||
|
|
||
| con.Write([]byte(s.String() + "\n")) | ||
| res, err := bufio.NewReader(con).ReadString('\n') | ||
| if err != nil { | ||
| log.Println(err) | ||
| } | ||
|
|
||
| log.Print("result code: ", int(res[0])) | ||
|
|
||
| return int(res[0]) | ||
| } |
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