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mini-beieli-web
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scales: fill in metrics

This commit is contained in:
Joerg Lehmann 2019-07-06 11:36:01 +02:00
parent 172212f0a8
commit 05e21aed4e
5 changed files with 385 additions and 71 deletions
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5
authentication.go
View File

@ -66,13 +66,12 @@ func loginHandler(response http.ResponseWriter, request *http.Request) {
name := request.FormValue("email")
pass := request.FormValue("password")
redirectTarget := "/invalid_login.html"
//if name != "" && pass != "" {
if checkLoginCredentials(name,pass) {
// .. check credentials ..
if checkLoginCredentials(name,pass) {
redirectTarget = "/scales.html"
logit(fmt.Sprintf("loginHandler: successful login for User %s",name))
setSession(name, response)
updateLoginTime(name)
redirectTarget = "/scales.html"
} else {
logit(fmt.Sprintf("loginHandler: invalid login for User %s",name))
}

37
main.go
View File

@ -8,22 +8,15 @@ import (
"time"
)
type AccountData struct {
Full_name string
Phone string
Address string
Zip string
City string
}
type Scale struct {
Beielipi_id string
Beielipi_alias string
Id string
Deveui string
Alias string
My_sms_number string
Sms_alarm string
Last_alarm string
Last_measurement string
Last_temp string
Last_humidity string
Last_weight string
Last_pressure string
Last_accu_level string
}
func serveTemplate(w http.ResponseWriter, r *http.Request) {
@ -57,12 +50,27 @@ func serveTemplate(w http.ResponseWriter, r *http.Request) {
t := time.Now()
var datetimestring = t.Format("20060102150405")
var scales = getMyDevs(userName)
var last_metrics []OneMetric
if r.URL.Path == "/scales.html" {
// wir holen noch die letzten Metriken
for _, v := range scales {
last_metric := getLastMetrics(v)
last_metrics = append(last_metrics, last_metric)
}
}
data := struct {
UserName string
DateTimeString string
Scales []string
LastMetrics []OneMetric
} {
userName,
datetimestring,
scales,
last_metrics,
}
if err := tmpl.ExecuteTemplate(w, "layout", &data); err != nil {
@ -85,6 +93,7 @@ func main() {
http.HandleFunc("/logout", logoutHandler)
http.HandleFunc("/confirm", confirmHandler)
http.HandleFunc("/metrics", metricsHandler)
http.HandleFunc("/lastmetrics", lastmetricsHandler)
logit("Starting Web Application...")
http.ListenAndServe("127.0.0.1:4000", nil)

227
metrics.go
View File

@ -11,13 +11,64 @@ import (
"strings"
)
type OneMetric struct {
Deveui string
Alias string
Timestamp string
Temperature string
Humidity string
Weight string
Pressure string
BatteryPercent string
}
// Contains tells whether a contains x.
func Contains(a []string, x string) bool {
log.Println("Search for: "+x)
for _, n := range a {
log.Println("Piece of Array: "+n)
if x == n {
return true
}
}
return false
}
// metrics handler
func metricsHandler(response http.ResponseWriter, request *http.Request) {
name := getUserName(request)
if name != "" {
property, ok := request.URL.Query()["property"]
if !ok || len(property[0]) < 1 {
log.Println("Url Param 'property' is missing")
fmt.Fprintf(response, "{ \"msg\": \"property must be specified in URL\" }")
return
}
deveui, ok := request.URL.Query()["deveui"]
if !ok || len(deveui[0]) < 1 {
log.Println("Url Param 'deveui' is missing")
fmt.Fprintf(response, "{ \"msg\": \"deveui must be specified in URL\" }")
return
}
// Query()["deveui"] will return an array of items,
// we only want the single item.
mydeveui := deveui[0]
if !(Contains(getMyDevs(name),mydeveui)) {
log.Println("specified 'deveui' does not belong to this user")
fmt.Fprintf(response, "{ \"msg\": \"specified deveui does not belong to this user\" }")
return
}
log.Println("Url Param 'deveui' is: " + string(mydeveui))
url := "http://localhost:9999/api/v2/query?org=beieliorg"
data := []byte(`from(bucket:"beielibucket") |> range(start:-24h) |> filter(fn: (r) => r._field == "v") |> filter(fn: (r) => r.devaddr == "084B3824")`)
data := []byte(fmt.Sprintf(`from(bucket:"beielibucket") |> range(start:-24h) |> filter(fn: (r) => r._field == "%s") |> filter(fn: (r) => r.deveui == "%s")`,property[0],mydeveui))
req, err := http.NewRequest("POST", url, bytes.NewBuffer(data))
if err != nil {
@ -73,3 +124,177 @@ func metricsHandler(response http.ResponseWriter, request *http.Request) {
fmt.Fprintf(response, "{ \"msg\": \"Only available for logged in users\" }")
}
}
func lastmetricsHandler(response http.ResponseWriter, request *http.Request) {
name := getUserName(request)
if name != "" {
deveui, ok := request.URL.Query()["deveui"]
if !ok || len(deveui[0]) < 1 {
log.Println("Url Param 'deveui' is missing")
fmt.Fprintf(response, "{ \"msg\": \"deveui must be specified in URL\" }")
return
}
// Query()["deveui"] will return an array of items,
// we only want the single item.
mydeveui := deveui[0]
if !(Contains(getMyDevs(name),mydeveui)) {
log.Println("specified 'deveui' does not belong to this user")
fmt.Fprintf(response, "{ \"msg\": \"specified deveui does not belong to this user\" }")
return
}
log.Println("Url Param 'deveui' is: " + string(mydeveui))
url := "http://localhost:9999/api/v2/query?org=beieliorg"
//data := []byte(fmt.Sprintf(`from(bucket:"beielibucket") |> range(start:-365d) |> filter(fn: (r) => r.deveui == "%s") |> filter(fn: (r) => r._field == "v" or r._field == "t") |> last() |> yield(name: "last")`,mydeveui))
data := []byte(fmt.Sprintf(`from(bucket:"beielibucket")
|> range(start:-365d)
|> filter(fn: (r) => r.deveui == "%s")
|> filter(fn: (r) => r._field == "t" or r._field == "h" or r._field == "w" or r._field == "p" or r._field == "vp")
|> last() |> yield(name: "last")`,mydeveui))
req, err := http.NewRequest("POST", url, bytes.NewBuffer(data))
if err != nil {
log.Fatal("Error reading request. ", err)
}
// Set headers
req.Header.Set("Authorization", "Token xXnq8ADcDygAyM_L0B_10c9yuoOv-cYcUfIXkJunRrIDMhB5ZNmza-Whr1ELcbKNzW8GzUMMYD85QohUHQdAmg==")
req.Header.Set("accept", "application/csv")
req.Header.Set("content-type", "application/vnd.flux")
// Set client timeout
client := &http.Client{Timeout: time.Second * 10}
// Send request
resp, err := client.Do(req)
if err != nil {
log.Fatal("Error reading response. ", err)
}
defer resp.Body.Close()
fmt.Println("response Status:", resp.Status)
fmt.Println("response Headers:", resp.Header)
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
log.Fatal("Error reading body. ", err)
}
fmt.Println("response Body:", string(body))
scanner := bufio.NewScanner(strings.NewReader(string(body)))
ts := ""
t := ""
h := ""
w := ""
p := ""
vp := ""
location, err := time.LoadLocation("Europe/Zurich")
for scanner.Scan() {
s := strings.Split(scanner.Text(),",")
if ((len(s) >= 7) && !(strings.HasPrefix(s[5],"_"))) {
mytime,err := time.Parse(time.RFC3339,s[5])
if err != nil {
continue
}
ts = mytime.In(location).Format("02.01.2006 15:04")
value := s[6]
field := s[7]
if field == "t" {
t = value
} else if field == "h" {
h = value
} else if field == "w" {
w = value
} else if field == "p" {
p = value
} else if field == "vp" {
vp = value
}
}
}
fmt.Fprintf(response,`{
"ts": "%s",
"t": "%s",
"h": "%s",
"w": "%s",
"p": "%s",
"vp": "%s"
}`,ts,t,h,w,p,vp)
} else {
fmt.Fprintf(response, "{ \"msg\": \"Only available for logged in users\" }")
}
}
func getLastMetrics(deveui string) OneMetric {
var res OneMetric
url := "http://localhost:9999/api/v2/query?org=beieliorg"
data := []byte(fmt.Sprintf(`from(bucket:"beielibucket")
|> range(start:-365d)
|> filter(fn: (r) => r.deveui == "%s")
|> filter(fn: (r) => r._field == "t" or r._field == "h" or r._field == "w" or r._field == "p" or r._field == "vp")
|> last() |> yield(name: "last")`,deveui))
req, err := http.NewRequest("POST", url, bytes.NewBuffer(data))
if err != nil {
log.Fatal("Error reading request. ", err)
}
// Set headers
req.Header.Set("Authorization", "Token xXnq8ADcDygAyM_L0B_10c9yuoOv-cYcUfIXkJunRrIDMhB5ZNmza-Whr1ELcbKNzW8GzUMMYD85QohUHQdAmg==")
req.Header.Set("accept", "application/csv")
req.Header.Set("content-type", "application/vnd.flux")
// Set client timeout
client := &http.Client{Timeout: time.Second * 10}
// Send request
resp, err := client.Do(req)
if err != nil {
log.Fatal("Error reading response. ", err)
}
defer resp.Body.Close()
fmt.Println("response Status:", resp.Status)
fmt.Println("response Headers:", resp.Header)
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
log.Fatal("Error reading body. ", err)
}
fmt.Println("response Body:", string(body))
scanner := bufio.NewScanner(strings.NewReader(string(body)))
location, err := time.LoadLocation("Europe/Zurich")
for scanner.Scan() {
s := strings.Split(scanner.Text(),",")
if ((len(s) >= 7) && !(strings.HasPrefix(s[5],"_"))) {
mytime,err := time.Parse(time.RFC3339,s[5])
if err != nil {
continue
}
res.Timestamp = mytime.In(location).Format("02.01.2006 15:04")
value := s[6]
field := s[7]
if field == "t" {
res.Temperature = value
} else if field == "h" {
res.Humidity = value
} else if field == "w" {
res.Weight = value
} else if field == "p" {
res.Pressure = value
} else if field == "vp" {
res.BatteryPercent = value
}
}
}
res.Deveui = deveui
res.Alias = getDevAlias(deveui)
return res
}

107
persistence.go
View File

@ -2,6 +2,8 @@ package main
import (
"time"
"strings"
"log"
"encoding/json"
"crypto/rand"
"golang.org/x/crypto/bcrypt"
@ -9,10 +11,9 @@ import (
)
var globalPool *redis.Pool
var globalConn redis.Conn
const userPrefix string = "user:"
const devPrefix string = "dev:"
const confirmPrefix string = "confirm:"
func newPool() *redis.Pool {
@ -56,6 +57,13 @@ type User struct {
NewPassword string `json:"new_password"`
ConfirmId string `json:"confirm_id"`
LastLogin string `json:"last_login"`
MyDevs string `json:"my_devs"`
}
type Dev struct {
Deveui string `json:"deveui"`
Alias string `json:"alias"`
}
@ -96,14 +104,14 @@ func initDB() {
// newPool returns a pointer to a redis.Pool
pool := newPool()
// get a connection from the pool (redis.Conn)
// get a connection from the globalPool (redis.Conn)
conn := pool.Get()
defer conn.Close()
globalPool = pool
globalConn = conn
// wir machen einen Connection Test
ping(globalConn)
ping(conn)
// Wir legen einen initialen Admin User an, falls es diesen noch nicht gibt
if checkUserAvailable("joerg.lehmann@nbit.ch") {
@ -113,13 +121,15 @@ func initDB() {
}
func closeDB() {
globalConn.Close()
globalPool.Close()
}
func checkUserAvailable(username string) bool {
logit("checkUserAvailable: User: "+username)
_, err := redis.String(globalConn.Do("GET", userPrefix+username))
conn := globalPool.Get()
defer conn.Close()
_, err := redis.String(conn.Do("GET", userPrefix+username))
if (err == redis.ErrNil) {
logit("User does not exist and is therefore available:"+username)
return true
@ -130,6 +140,52 @@ func checkUserAvailable(username string) bool {
return false
}
func getMyDevs(username string) []string {
res := []string{}
if username == "" {
return res
}
conn := globalPool.Get()
defer conn.Close()
logit("getMyDevs: User: "+username)
mydevs, err := redis.String(conn.Do("HGET", userPrefix+username, "my_devs"))
if err == nil {
logit("getMyDevs: mydevs: "+mydevs)
res = strings.Split(mydevs, ",")
} else {
log.Print(err)
}
return res
}
func getDevAlias(deveui string) string {
res := deveui
if deveui == "" {
return res
}
conn := globalPool.Get()
defer conn.Close()
logit("getDevAlias: Deveui: "+deveui)
alias, err := redis.String(conn.Do("HGET", devPrefix+deveui, "alias"))
if err == nil {
logit("getDevAlias: alias: "+alias)
res = alias
} else {
log.Print(err)
}
return res
}
func randString(n int) string {
const alphanum = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
var bytes = make([]byte, n)
@ -141,6 +197,8 @@ func randString(n int) string {
}
func insertUser(username,password,is_admin string) {
conn := globalPool.Get()
defer conn.Close()
logit("insertUser: "+username)
pwd := []byte(password)
hashedPassword,err := bcrypt.GenerateFromPassword(pwd, bcrypt.DefaultCost)
@ -150,7 +208,7 @@ func insertUser(username,password,is_admin string) {
}
confirm_id := ""
_, err = globalConn.Do("HMSET", userPrefix+username, "password", string(hashedPassword), "new_password", string(hashedPassword), "confirm_id", confirm_id, "last_login", "")
_, err = conn.Do("HMSET", userPrefix+username, "password", string(hashedPassword), "new_password", string(hashedPassword), "confirm_id", confirm_id, "last_login", "", "my_devs","")
if err != nil {
logit("insertUser: Error inserting User: "+username)
@ -159,6 +217,8 @@ func insertUser(username,password,is_admin string) {
}
func updateUser(username,password string) {
conn := globalPool.Get()
defer conn.Close()
logit("updateUser: "+username)
pwd := []byte(password)
hashedPassword,err := bcrypt.GenerateFromPassword(pwd, bcrypt.DefaultCost)
@ -168,12 +228,12 @@ func updateUser(username,password string) {
}
confirm_id := randString(30)
_, err = globalConn.Do("HMSET", userPrefix+username, "new_password", string(hashedPassword), "confirm_id", confirm_id)
_, err = conn.Do("HMSET", userPrefix+username, "new_password", string(hashedPassword), "confirm_id", confirm_id)
if err != nil {
logit("updateUser: Error updateing User: "+username)
return
}
_, err = globalConn.Do("SET", confirmPrefix+confirm_id,username)
_, err = conn.Do("SET", confirmPrefix+confirm_id,username)
if err != nil {
logit("updateUser: Error inserting confirm_id: "+confirm_id+": "+username)
return
@ -183,10 +243,14 @@ func updateUser(username,password string) {
}
func checkLoginCredentials(username,password string) bool {
conn := globalPool.Get()
defer conn.Close()
logit("checkLoginCredentials: called with username,password: "+username+","+password)
pwd, err := redis.String(globalConn.Do("HGET", userPrefix+username, "password"))
pwd, err := redis.String(conn.Do("HGET", userPrefix+username, "password"))
if err == nil {
cid, err := redis.String(globalConn.Do("HGET", userPrefix+username, "confirm_id"))
logit("checkLoginCredentials: pwd: "+pwd+" CMD: HGET "+userPrefix+username+userPrefix+username+" confirm_id")
cid, err := redis.String(conn.Do("HGET", userPrefix+username, "confirm_id"))
if err == nil {
logit("checkLoginCredentials: cid: "+cid)
if !(err != nil && cid != "") {
@ -196,6 +260,9 @@ func checkLoginCredentials(username,password string) bool {
}
}
}
} else {
log.Print(err)
return false
}
hashedPassword := []byte(pwd)
@ -204,7 +271,10 @@ func checkLoginCredentials(username,password string) bool {
}
func updateLoginTime(username string) {
_, err := globalConn.Do("HSET", userPrefix+username, "last_login", time.Now().UTC().Format("2006-01-02 15:04:05"))
conn := globalPool.Get()
defer conn.Close()
_, err := conn.Do("HSET", userPrefix+username, "last_login", time.Now().UTC().Format("2006-01-02 15:04:05"))
if err != nil {
logit("updateUser: Error updateing User: "+username)
return
@ -212,22 +282,25 @@ func updateLoginTime(username string) {
}
func confirmUser(confirm_id string) {
u, err := redis.String(globalConn.Do("GET", confirmPrefix+confirm_id))
conn := globalPool.Get()
defer conn.Close()
u, err := redis.String(conn.Do("GET", confirmPrefix+confirm_id))
if err != nil {
logit("confirmUser: Error with searching confirm_id: "+confirm_id)
return
}
new_password, err := redis.String(globalConn.Do("HGET", userPrefix+u, "new_password"))
new_password, err := redis.String(conn.Do("HGET", userPrefix+u, "new_password"))
if err != nil {
logit("confirmUser: Error with getting new_password: "+u)
return
}
_, err = globalConn.Do("HMSET", userPrefix+u, "confirm_id", "", "password", new_password)
_, err = conn.Do("HMSET", userPrefix+u, "confirm_id", "", "password", new_password)
if err != nil {
logit("confirmUser: Error updateing User: "+u)
return
}
_, err = globalConn.Do("DEL", confirmPrefix+confirm_id)
_, err = conn.Do("DEL", confirmPrefix+confirm_id)
if err != nil {
logit("confirmUser: Error deleting confirm_id: "+confirm_id)
return

24
snippets/scales.html
View File

@ -16,44 +16,51 @@
</div>
</div>
{{range .LastMetrics}}
<div class="column is-full notification is-warning">
<p class="is-size-2 has-text-centered has-text-weight-bold">Waage 1</p>
<p class="has-text-centered">letzte Messung: 1.1.2000 19:20</p>
<p id="alias_{{.Deveui}}" class="is-size-2 has-text-centered has-text-weight-bold">{{.Alias}}</p>
<p id="lastmeasurement_{{.Deveui}}" class="has-text-centered">letzte Messung: {{.Timestamp}}</p>
<div>
<div class="colums is-full notification is-warning">
<nav class="level">
<div class="level-item has-text-centered">
<div>
<p class="icon"><i class="fa fa-thermometer-half"></i></p>
<p class="title">22.0 &deg;C</p>
<p id="temp_{{.Deveui}}" class="title">{{.Temperature}}</p>
</div>
</div>
<div class="level-item has-text-centered">
<div>
<p class="icon"><i class="fa fa-tint"></i></p>
<p class="title">50 %</p>
<p id="humidity_{{.Deveui}}" class="title">{{.Humidity}}</p>
</div>
</div>
<div class="level-item has-text-centered">
<div>
<p class="icon"><i class="fa fa-balance-scale"></i></p>
<p class="title is-size-1 has-text-weight-bold">456K</p>
<p id="weight_{{.Deveui}}" class="title is-size-1 has-text-weight-bold">{{.Weight}}</p>
</div>
</div>
<div class="level-item has-text-centered">
<div>
<p class="icon"><i class="fa fa-cloud"></i></p>
<p class="title">789</p>
<p id="pressure_{{.Deveui}}" class="title">{{.Pressure}}</p>
</div>
</div>
<div class="level-item has-text-centered">
<div>
<p class="icon"><i class="fa fa-battery-three-quarters"></i></p>
<p class="title">90%</p>
<p id="acculevel_{{.Deveui}}" class="title">{{.BatteryPercent}}/p>
</div>
</div>
</nav>
</div>
</div>
</div>
<div>
</div>
{{end}}
<script>
$("#mybutton,.delete").click(function(){
console.log("Hallo Velo");
@ -63,7 +70,7 @@ $("#mybutton,.delete").click(function(){
<script src="https://cdn.jsdelivr.net/npm/apexcharts"></script>
<script>
$.getJSON('https://mini-beieli.ch/metrics', function(mydata) {
$.getJSON('https://mini-beieli.ch/metrics?deveui=0002CC010000029D&property=t', function(mydata) {
var options = {
chart: {
type: 'line',
@ -90,6 +97,7 @@ $.getJSON('https://mini-beieli.ch/metrics', function(mydata) {
chart.render();
});
</script>
{{ else }}
<h4>Bitte zuerst <a href="login.html">einloggen</a></h4>
{{end}}