diff --git a/dev/dev.htm b/dev/dev.htm index 6d889aa..440c0bd 100644 --- a/dev/dev.htm +++ b/dev/dev.htm @@ -5,11 +5,61 @@ - + + -
+
+

Test!

diff --git a/shroom_internals/sql.go b/shroom_internals/sql.go index 016efda..64e9be7 100644 --- a/shroom_internals/sql.go +++ b/shroom_internals/sql.go @@ -65,3 +65,9 @@ func LatestTime(db *sql.DB) (int64, error) { } return t, nil } + +func InsertRow(db *sql.DB, s *ShroomData) error { + _, err := db.Exec("INSERT INTO shrooms (time, temperature, humidity, humidifier_volts) VALUES (?, ?, ?, ?)", + s.Time, s.Temperature, s.Humidity, s.HumidifierVolts) + return err +} diff --git a/shroom_internals/tcp_server.go b/shroom_internals/tcp_server.go index af22d3a..e32a0bf 100644 --- a/shroom_internals/tcp_server.go +++ b/shroom_internals/tcp_server.go @@ -18,26 +18,63 @@ func newlinePos(s []byte) int { } type ShroomData struct { - Time uint64 - Temperature float32 - Humidity float32 - HumidifierVolts float32 - Status uint32 -} - -type ShroomStatusData struct { - Status uint32 - NumConnections int + Time uint64 `json:"time"` + Temperature float32 `json:"temp"` + Humidity float32 `json:"hum"` + HumidifierVolts float32 `json:"hv"` + Status uint32 `json:"status"` } type ShroomStatus struct { - Status uint32 + sync.RWMutex + HumidifierOn bool NumConnections int - Lock sync.RWMutex + Wait chan struct{} +} + +func (s *ShroomStatus) Update() { + s.Lock() + defer s.Unlock() + close(s.Wait) + s.Wait = make(chan struct{}) +} + +func parseMsg(line []byte, db *sql.DB, status *ShroomStatus) { + data := ShroomData{ + Time: 0, + Temperature: -1, + Humidity: -1, + HumidifierVolts: -1, + Status: 0, + } + err := json.Unmarshal(line, &data) + if err != nil { + log.Println("unable to parse tcp line: ", err) + log.Println(string(line)) + log.Println(line) + return + } + if data.Time > 0 && data.Temperature > 0 && data.Humidity > 0 && data.HumidifierVolts > 0 { + err = InsertRow(db, &data) + if err != nil { + log.Println("unable to write to database: ", err) + } + // we got a data packet + status.Update() + } else if data.Status > 0 { + status.Lock() + // TODO change to have more detailed data + status.HumidifierOn = (data.Status & 1) == 1 + status.Unlock() + status.Update() + } else { + log.Println("unknown packet: ", line) + } + } func InitTcpServer(db *sql.DB, status *ShroomStatus) { - // TODO start TCP server for the pipe from the raspberry pi + // start TCP server for the pipe from the raspberry pi ln, err := net.Listen("tcp", ":9876") if err != nil { log.Fatal("unable to open tcp server: ", err) @@ -49,14 +86,14 @@ func InitTcpServer(db *sql.DB, status *ShroomStatus) { log.Println("tcp accept error: ", err) continue } - status.Lock.Lock() + status.Lock() status.NumConnections += 1 - status.Lock.Unlock() + status.Unlock() defer func() { - status.Lock.Lock() + status.Lock() status.NumConnections -= 1 - status.Lock.Unlock() + status.Unlock() log.Println("connection disconnected") }() @@ -96,35 +133,8 @@ func InitTcpServer(db *sql.DB, status *ShroomStatus) { if len(line) == 0 { continue } - data := ShroomData{ - Time: 0, - Temperature: -1, - Humidity: -1, - HumidifierVolts: -1, - Status: 0, - } - err := json.Unmarshal(line, &data) - if err != nil { - log.Println("unable to read humdifier data: ", err) - log.Println(string(line)) - log.Println(line) - continue - } - if data.Time > 0 && data.Temperature > 0 && data.Humidity > 0 && data.HumidifierVolts > 0 { - // we got a data packet - _, err = db.Exec("INSERT INTO shrooms (time, temperature, humidity, humidifier_volts) VALUES (?, ?, ?, ?)", - data.Time, data.Temperature, data.Humidity, data.HumidifierVolts) - if err != nil { - log.Println("unable to write to database: ", err) - } - } else if data.Status > 0 { - status.Lock.Lock() - // TODO change to have more detailed data - status.Status = data.Status - status.Lock.Unlock() - } else { - log.Println("unknown packet: ", line) - } + + parseMsg(line, db, status) } // shift the remaining data back to the start of the buffer copy(buf[:len(unread)], unread) diff --git a/shroom_server.go b/shroom_server.go index bcd64bb..cf1e511 100644 --- a/shroom_server.go +++ b/shroom_server.go @@ -11,6 +11,8 @@ import ( import ( "database/sql" "embed" + "encoding/json" + "fmt" "io/fs" "log" "net/http" @@ -20,8 +22,9 @@ import ( //go:embed static/* var content embed.FS -type commandDispatcher struct { - // TODO +type statusJson struct { + Connected bool `json:"connected"` + Humidifier bool `json:"humidifier"` } func dumpData(db *sql.DB, offset int64) func(http.ResponseWriter, *http.Request) { @@ -52,7 +55,9 @@ func main() { log.Fatal("unable to create table ", err) } - status := s.ShroomStatus{} + status := s.ShroomStatus{ + Wait: make(chan struct{}), + } s.InitTcpServer(db, &status) contentSub, err := fs.Sub(content, "static") @@ -63,6 +68,7 @@ func main() { dumpWeek := dumpData(db, -7*24*60*60) dumpDay := dumpData(db, -24*60*60) dumpHour := dumpData(db, -60*60) + dumpMinute := dumpData(db, -60) lastPoint := func(w http.ResponseWriter, _req *http.Request) { msg, err := s.LastTime(db) @@ -75,27 +81,48 @@ func main() { } getStatus := func(w http.ResponseWriter, _req *http.Request) { - status.Lock.RLock() + status.RLock() num_connections := status.NumConnections - status.Lock.RUnlock() - if num_connections > 0 { - w.Write([]byte("foo")) + humidifier := status.HumidifierOn + status.RUnlock() + s := statusJson{ + Connected: num_connections > 0, + Humidifier: humidifier, + } + msg, err := json.Marshal(s) + if err != nil { + err = fmt.Errorf("unable to marshal json: %w", err) + w.WriteHeader(500) + w.Write([]byte(err.Error())) + } else { + w.Write(msg) } - // TODO } adminHandler := func(w http.ResponseWriter, req *http.Request) { + w.WriteHeader(500) + w.Write([]byte("unimplemented")) // TODO } + updateHandler := func(w http.ResponseWriter, req *http.Request) { + stillopen := true + for stillopen { + _, stillopen = <-status.Wait + } + w.Write([]byte("ok")) + } + http.Handle("/d/", http.StripPrefix("/d/", http.FileServer(http.Dir("./dev")))) http.Handle("/", http.FileServer(http.FS(contentSub))) - http.HandleFunc("/api/data/week", dumpWeek) - http.HandleFunc("/api/data/day", dumpDay) - http.HandleFunc("/api/data/hour", dumpHour) + http.HandleFunc("/api/last/week", dumpWeek) + http.HandleFunc("/api/last/day", dumpDay) + http.HandleFunc("/api/last/hour", dumpHour) + http.HandleFunc("/api/last/minute", dumpMinute) http.HandleFunc("/api/latest", lastPoint) http.HandleFunc("/api/status", getStatus) http.HandleFunc("/api/admin", adminHandler) + http.HandleFunc("/api/update", updateHandler) // TODO periodically clear old entries from the database diff --git a/static/d3.v5.min.js b/static/d3.v5.min.js new file mode 100644 index 0000000..344d26c --- /dev/null +++ b/static/d3.v5.min.js @@ -0,0 +1,2 @@ +// https://d3js.org v5.16.0 Copyright 2020 Mike Bostock +!function(t,n){"object"==typeof exports&&"undefined"!=typeof module?n(exports):"function"==typeof define&&define.amd?define(["exports"],n):n((t=t||self).d3=t.d3||{})}(this,function(t){"use strict";function n(t,n){return 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