Added notification manager

main.go

@@ -4,7 +4,10 @@ import (
 	// External
 	ws "git.gibonuddevalla.se/go/webservice"
 	"git.gibonuddevalla.se/go/webservice/session"
-	we "git.gibonuddevalla.se/go/wrappederror"
+	werr "git.gibonuddevalla.se/go/wrappederror"
+
+	// Internal
+	"smon/notification"
 
 	// Standard
 	"embed"
@@ -33,6 +36,7 @@ var (
 	logFile             *os.File
 	parsedTemplates     map[string]*template.Template
 	componentFilenames  []string
+	notificationManager notification.Manager
 
 	//go:embed sql
 	sqlFS embed.FS
@@ -50,7 +54,7 @@ func init() { // {{{
 
 	confDir, err := os.UserConfigDir()
 	if err != nil {
-		logger.Error("application", "error", we.Wrap(err))
+		logger.Error("application", "error", werr.Wrap(err))
 	}
 	cfgPath := path.Join(confDir, "smon.yaml")
 	flag.StringVar(&flagConfigFile, "config", cfgPath, "Path and filename of the YAML configuration file")
@@ -68,8 +72,8 @@ func init() { // {{{
 func main() { // {{{
 	var err error
 
-	we.Init()
+	werr.Init()
-	we.SetLogCallback(logHandler)
+	werr.SetLogCallback(logHandler)
 
 	service, err = ws.New(flagConfigFile, VERSION, logger)
 	if err != nil {
@@ -96,6 +100,12 @@ func main() { // {{{
 		return
 	}
 
+	err = InitNotificationManager()
+	if err != nil {
+		err = werr.Wrap(err).Log()
+		logger.Error("notification", "error", err)
+	}
+
 	service.Register("/", false, false, staticHandler)
 
 	service.Register("/area/new/{name}", false, false, areaNew)
@@ -124,7 +134,7 @@ func main() { // {{{
 
 	err = service.Start()
 	if err != nil {
-		logger.Error("webserver", "error", we.Wrap(err))
+		logger.Error("webserver", "error", werr.Wrap(err))
 		os.Exit(1)
 	}
 
@@ -139,7 +149,7 @@ func sqlProvider(dbname string, version int) (sql []byte, found bool) { // {{{
 	found = true
 	return
 } // }}}
-func logHandler(err we.Error) { // {{{
+func logHandler(err werr.Error) { // {{{
 	j, _ := json.Marshal(err)
 	logFile.Write(j)
 	logFile.Write([]byte("\n"))
@@ -175,7 +185,7 @@ func entryDatapoint(w http.ResponseWriter, r *http.Request, sess *session.T) { /
 
 	err := DatapointAdd(dpoint, value)
 	if err != nil {
-		httpError(w, we.Wrap(err).Log())
+		httpError(w, werr.Wrap(err).Log())
 		return
 	}
 
@@ -188,7 +198,7 @@ func entryDatapoint(w http.ResponseWriter, r *http.Request, sess *session.T) { /
 		var out any
 		out, err = trigger.Run()
 		if err != nil {
-			err = we.Wrap(err).Log()
+			err = werr.Wrap(err).Log()
 			logger.Error("entry", "error", err)
 
 		}
@@ -200,13 +210,13 @@ func entryDatapoint(w http.ResponseWriter, r *http.Request, sess *session.T) { /
 			if v {
 				err = ProblemStart(trigger)
 				if err != nil {
-					err = we.Wrap(err).Log()
+					err = werr.Wrap(err).Log()
 					logger.Error("entry", "error", err)
 				}
 			} else {
 				err = ProblemClose(trigger)
 				if err != nil {
-					err = we.Wrap(err).Log()
+					err = werr.Wrap(err).Log()
 					logger.Error("entry", "error", err)
 				}
 			}
@@ -214,7 +224,7 @@ func entryDatapoint(w http.ResponseWriter, r *http.Request, sess *session.T) { /
 		default:
 			err := fmt.Errorf(`Expression for trigger %s not returning bool (%T)`, trigger.Name, v)
 			logger.Info("entry", "error", err)
-			we.Wrap(err).WithData(v).Log()
+			werr.Wrap(err).WithData(v).Log()
 		}
 	}
 
@@ -268,7 +278,7 @@ func getPage(layout, page string) (tmpl *template.Template, err error) { // {{{
 		tmpl, err = template.New("main.gotmpl").Funcs(funcMap).ParseFS(viewFS, filenames...)
 	}
 	if err != nil {
-		err = we.Wrap(err).Log()
+		err = werr.Wrap(err).Log()
 		return
 	}
 
@@ -288,7 +298,7 @@ func areaNew(w http.ResponseWriter, r *http.Request, _ *session.T) { // {{{
 	name := r.PathValue("name")
 	err := AreaCreate(name)
 	if err != nil {
-		httpError(w, we.Wrap(err).Log())
+		httpError(w, werr.Wrap(err).Log())
 		return
 	}
 
@@ -300,14 +310,14 @@ func areaRename(w http.ResponseWriter, r *http.Request, _ *session.T) { // {{{
 	idStr := r.PathValue("id")
 	id, err := strconv.Atoi(idStr)
 	if err != nil {
-		httpError(w, we.Wrap(err).Log())
+		httpError(w, werr.Wrap(err).Log())
 		return
 	}
 
 	name := r.PathValue("name")
 	err = AreaRename(id, name)
 	if err != nil {
-		httpError(w, we.Wrap(err).Log())
+		httpError(w, werr.Wrap(err).Log())
 		return
 	}
 
@@ -320,14 +330,14 @@ func sectionNew(w http.ResponseWriter, r *http.Request, _ *session.T) { // {{{
 	idStr := r.PathValue("areaID")
 	areaID, err := strconv.Atoi(idStr)
 	if err != nil {
-		httpError(w, we.Wrap(err).Log())
+		httpError(w, werr.Wrap(err).Log())
 		return
 	}
 
 	name := r.PathValue("name")
 	err = SectionCreate(areaID, name)
 	if err != nil {
-		httpError(w, we.Wrap(err).Log())
+		httpError(w, werr.Wrap(err).Log())
 		return
 	}
 
@@ -339,14 +349,14 @@ func sectionRename(w http.ResponseWriter, r *http.Request, _ *session.T) { // {{
 	idStr := r.PathValue("id")
 	id, err := strconv.Atoi(idStr)
 	if err != nil {
-		httpError(w, we.Wrap(err).Log())
+		httpError(w, werr.Wrap(err).Log())
 		return
 	}
 
 	name := r.PathValue("name")
 	err = SectionRename(id, name)
 	if err != nil {
-		httpError(w, we.Wrap(err).Log())
+		httpError(w, werr.Wrap(err).Log())
 		return
 	}
 
@@ -363,7 +373,7 @@ func pageProblems(w http.ResponseWriter, _ *http.Request, _ *session.T) { // {{{
 
 	problems, err := ProblemsRetrieve()
 	if err != nil {
-		httpError(w, we.Wrap(err).Log())
+		httpError(w, werr.Wrap(err).Log())
 		return
 	}
 
@@ -377,13 +387,13 @@ func pageProblemAcknowledge(w http.ResponseWriter, r *http.Request, _ *session.T
 	idStr := r.PathValue("id")
 	id, err := strconv.Atoi(idStr)
 	if err != nil {
-		httpError(w, we.Wrap(err).Log())
+		httpError(w, werr.Wrap(err).Log())
 		return
 	}
 
 	err = ProblemAcknowledge(id, true)
 	if err != nil {
-		httpError(w, we.Wrap(err).Log())
+		httpError(w, werr.Wrap(err).Log())
 		return
 	}
 
@@ -396,13 +406,13 @@ func pageProblemUnacknowledge(w http.ResponseWriter, r *http.Request, _ *session
 	idStr := r.PathValue("id")
 	id, err := strconv.Atoi(idStr)
 	if err != nil {
-		httpError(w, we.Wrap(err).Log())
+		httpError(w, werr.Wrap(err).Log())
 		return
 	}
 
 	err = ProblemAcknowledge(id, false)
 	if err != nil {
-		httpError(w, we.Wrap(err).Log())
+		httpError(w, werr.Wrap(err).Log())
 		return
 	}
 
@@ -420,7 +430,7 @@ func pageDatapoints(w http.ResponseWriter, r *http.Request, _ *session.T) { // {
 
 	datapoints, err := DatapointsRetrieve()
 	if err != nil {
-		httpError(w, we.Wrap(err).Log())
+		httpError(w, werr.Wrap(err).Log())
 		return
 	}
 
@@ -441,7 +451,7 @@ func pageDatapointEdit(w http.ResponseWriter, r *http.Request, _ *session.T) { /
 	idStr := r.PathValue("id")
 	id, err := strconv.Atoi(idStr)
 	if err != nil {
-		httpError(w, we.Wrap(err).Log())
+		httpError(w, werr.Wrap(err).Log())
 		return
 	}
 
@@ -452,7 +462,7 @@ func pageDatapointEdit(w http.ResponseWriter, r *http.Request, _ *session.T) { /
 	} else {
 		datapoint, err = DatapointRetrieve(id, "")
 		if err != nil {
-			httpError(w, we.Wrap(err).Log())
+			httpError(w, werr.Wrap(err).Log())
 			return
 		}
 	}
@@ -475,7 +485,7 @@ func pageDatapointUpdate(w http.ResponseWriter, r *http.Request, _ *session.T) {
 	idStr := r.PathValue("id")
 	id, err := strconv.Atoi(idStr)
 	if err != nil {
-		httpError(w, we.Wrap(err).Log())
+		httpError(w, werr.Wrap(err).Log())
 		return
 	}
 
@@ -485,7 +495,7 @@ func pageDatapointUpdate(w http.ResponseWriter, r *http.Request, _ *session.T) {
 	dp.Datatype = DatapointType(r.FormValue("datatype"))
 	err = dp.Update()
 	if err != nil {
-		httpError(w, we.Wrap(err).Log())
+		httpError(w, werr.Wrap(err).Log())
 		return
 	}
 
@@ -496,13 +506,13 @@ func pageDatapointDelete(w http.ResponseWriter, r *http.Request, _ *session.T) {
 	idStr := r.PathValue("id")
 	id, err := strconv.Atoi(idStr)
 	if err != nil {
-		httpError(w, we.Wrap(err).Log())
+		httpError(w, werr.Wrap(err).Log())
 		return
 	}
 
 	err = DatapointDelete(id)
 	if err != nil {
-		httpError(w, we.Wrap(err).Log())
+		httpError(w, werr.Wrap(err).Log())
 		return
 	}
 
@@ -513,7 +523,7 @@ func pageDatapointDelete(w http.ResponseWriter, r *http.Request, _ *session.T) {
 func pageTriggers(w http.ResponseWriter, _ *http.Request, _ *session.T) { // {{{
 	areas, err := TriggersRetrieve()
 	if err != nil {
-		httpError(w, we.Wrap(err).Log())
+		httpError(w, werr.Wrap(err).Log())
 		return
 	}
 
@@ -535,7 +545,7 @@ func pageTriggerEdit(w http.ResponseWriter, r *http.Request, _ *session.T) { //
 	idStr := r.PathValue("id")
 	id, err := strconv.Atoi(idStr)
 	if err != nil {
-		httpError(w, we.Wrap(err).Log())
+		httpError(w, werr.Wrap(err).Log())
 		return
 	}
 
@@ -546,7 +556,7 @@ func pageTriggerEdit(w http.ResponseWriter, r *http.Request, _ *session.T) { //
 	if id > 0 {
 		trigger, err = TriggerRetrieve(id)
 		if err != nil {
-			httpError(w, we.Wrap(err).Log())
+			httpError(w, werr.Wrap(err).Log())
 			return
 		}
 	} else {
@@ -555,7 +565,7 @@ func pageTriggerEdit(w http.ResponseWriter, r *http.Request, _ *session.T) { //
 		if sectionIDStr != "" {
 			trigger.SectionID, err = strconv.Atoi(sectionIDStr)
 			if err != nil {
-				httpError(w, we.Wrap(err).Log())
+				httpError(w, werr.Wrap(err).Log())
 				return
 			}
 		}
@@ -565,7 +575,7 @@ func pageTriggerEdit(w http.ResponseWriter, r *http.Request, _ *session.T) { //
 	for _, dpname := range trigger.Datapoints {
 		dp, err := DatapointRetrieve(0, dpname)
 		if err != nil {
-			httpError(w, we.Wrap(err).Log())
+			httpError(w, werr.Wrap(err).Log())
 			return
 		}
 		dp.LastDatapointValue.TemplateValue = dp.LastDatapointValue.Value()
@@ -590,7 +600,7 @@ func pageTriggerUpdate(w http.ResponseWriter, r *http.Request, _ *session.T) { /
 	idStr := r.PathValue("id")
 	id, err := strconv.Atoi(idStr)
 	if err != nil {
-		httpError(w, we.Wrap(err).Log())
+		httpError(w, werr.Wrap(err).Log())
 		return
 	}
 
@@ -598,13 +608,13 @@ func pageTriggerUpdate(w http.ResponseWriter, r *http.Request, _ *session.T) { /
 	if id > 0 {
 		trigger, err = TriggerRetrieve(id)
 		if err != nil {
-			httpError(w, we.Wrap(err).Log())
+			httpError(w, werr.Wrap(err).Log())
 			return
 		}
 	} else {
 		trigger.SectionID, err = strconv.Atoi(r.FormValue("sectionID"))
 		if err != nil {
-			httpError(w, we.Wrap(err).Log())
+			httpError(w, werr.Wrap(err).Log())
 			return
 		}
 	}
@@ -614,7 +624,7 @@ func pageTriggerUpdate(w http.ResponseWriter, r *http.Request, _ *session.T) { /
 	trigger.Datapoints = r.Form["datapoints[]"]
 	err = trigger.Update()
 	if err != nil {
-		httpError(w, we.Wrap(err).Log())
+		httpError(w, werr.Wrap(err).Log())
 		return
 	}
 
@@ -625,14 +635,14 @@ func pageTriggerRun(w http.ResponseWriter, r *http.Request, _ *session.T) { // {
 	idStr := r.PathValue("id")
 	id, err := strconv.Atoi(idStr)
 	if err != nil {
-		httpError(w, we.Wrap(err).Log())
+		httpError(w, werr.Wrap(err).Log())
 		return
 	}
 
 	var trigger Trigger
 	trigger, err = TriggerRetrieve(id)
 	if err != nil {
-		httpError(w, we.Wrap(err).Log())
+		httpError(w, werr.Wrap(err).Log())
 		return
 	}
 
@@ -647,7 +657,7 @@ func pageTriggerRun(w http.ResponseWriter, r *http.Request, _ *session.T) { // {
 	}
 	resp.Output, err = trigger.Run()
 	if err != nil {
-		we.Wrap(err).Log()
+		werr.Wrap(err).Log()
 		httpError(w, err)
 		return
 	}
@@ -660,7 +670,7 @@ func pageTriggerRun(w http.ResponseWriter, r *http.Request, _ *session.T) { // {
 func pageConfiguration(w http.ResponseWriter, _ *http.Request, _ *session.T) { // {{{
 	areas, err := AreaRetrieve()
 	if err != nil {
-		httpError(w, we.Wrap(err).Log())
+		httpError(w, werr.Wrap(err).Log())
 		return
 	}
 

notification/factory.go

@@ -0,0 +1,23 @@
+package notification
+
+import (
+	// External
+	werr "git.gibonuddevalla.se/go/wrappederror"
+
+	// Standard
+	"log/slog"
+)
+
+func ServiceFactory(t string, config []byte, prio int, ackURL string, logger *slog.Logger) (Service, error) {
+	switch t {
+	case "NTFY":
+		ntfy, err := NewNTFY(config, prio, ackURL)
+		if err != nil {
+			err = werr.Wrap(err).WithData(config)
+			return nil, err
+		}
+		return ntfy, nil
+	}
+
+	return nil, werr.New("Unknown notification service, '%s'", t).WithCode("002-0000")
+}

notification/ntfy.go

@@ -0,0 +1,83 @@
+package notification
+
+import (
+	// External
+	werr "git.gibonuddevalla.se/go/wrappederror"
+
+	// Standard
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"log/slog"
+	"net/http"
+)
+
+type NTFY struct {
+	URL            string
+	Prio           int
+	AcknowledgeURL string
+	logger         *slog.Logger
+}
+
+func NewNTFY(config []byte, prio int, ackURL string) (instance *NTFY, err error) {
+	instance = new(NTFY)
+	err = json.Unmarshal(config, &instance)
+	if err != nil {
+		err = werr.Wrap(err).WithCode("002-0001").WithData(config)
+		return
+	}
+	instance.Prio = prio
+	instance.AcknowledgeURL = ackURL
+	return instance, nil
+}
+
+func (ntfy *NTFY) SetLogger(l *slog.Logger) {
+	ntfy.logger = l
+}
+
+func (ntfy *NTFY) GetType() string {
+	return "NTFY"
+}
+
+func (ntfy *NTFY) GetPrio() int {
+	return ntfy.Prio
+}
+
+func (ntfy NTFY) Send(uuid string, msg []byte) (err error) {
+	var req *http.Request
+	var res *http.Response
+	req, err = http.NewRequest("POST", ntfy.URL, bytes.NewReader(msg))
+	if err != nil {
+		err = werr.Wrap(err).WithCode("002-0002").WithData(ntfy.URL)
+		return
+	}
+
+	ackURL := fmt.Sprintf("http, OK, %s/notification/ack?uuid=%s", ntfy.AcknowledgeURL, uuid)
+	req.Header.Add("X-Actions", ackURL)
+	req.Header.Add("X-Priority", "3") // XXX: should be 5
+	req.Header.Add("X-Tags", "calendar")
+
+	res, err = http.DefaultClient.Do(req)
+	if err != nil {
+		err = werr.Wrap(err).WithCode("002-0003")
+		return
+	}
+
+	body, _ := io.ReadAll(res.Body)
+	if res.StatusCode != 200 {
+		err = werr.New("Invalid NTFY response").WithCode("002-0004").WithData(body)
+		return
+	}
+
+	ntfyResp := struct {
+		ID string
+	}{}
+	err = json.Unmarshal(body, &ntfyResp)
+	if err != nil {
+		err = werr.Wrap(err).WithCode("002-0005").WithData(body)
+		return
+	}
+
+	return
+}

notification/pkg.go

@@ -0,0 +1,61 @@
+package notification
+
+import (
+	// External
+	werr "git.gibonuddevalla.se/go/wrappederror"
+
+	// Standard
+	"log/slog"
+	"slices"
+)
+
+type Service interface {
+	SetLogger(*slog.Logger)
+	GetPrio() int
+	GetType() string
+	Send(string, []byte) error
+}
+
+type Manager struct {
+	services []Service
+	logger   *slog.Logger
+}
+
+func NewManager(logger *slog.Logger) (nm Manager) {
+	nm.services = []Service{}
+	nm.logger = logger
+	return
+}
+
+func (nm *Manager) AddService(service Service) {
+	nm.services = append(nm.services, service)
+	slices.SortFunc(nm.services, func(a, b Service) int {
+		if a.GetPrio() < b.GetPrio() {
+			return -1
+		}
+		if a.GetPrio() > b.GetPrio() {
+			return 1
+		}
+		return 0
+	})
+}
+
+func (nm *Manager) Send(uuid string, msg []byte) (err error) {
+	for _, service := range nm.services {
+		nm.logger.Info("notification", "service", service.GetType(), "prio", service.GetPrio())
+		if err = service.Send(uuid, msg); err == nil {
+			break
+		} else {
+			data := struct {
+				UUID string
+				Msg  []byte
+			}{
+				uuid,
+				msg,
+			}
+			werr.Wrap(err).WithData(data).Log()
+		}
+	}
+
+	return
+}

notification_manager.go

@@ -0,0 +1,80 @@
+package main
+
+import (
+	// External
+	werr "git.gibonuddevalla.se/go/wrappederror"
+
+	// Internal
+	"smon/notification"
+
+	// Standard
+	"database/sql"
+	"encoding/json"
+)
+
+type DbNotificationService struct {
+	ID            int
+	Service       string
+	Configuration string
+	Prio          int
+}
+
+func InitNotificationManager() (err error) { // {{{
+	var dbServices []DbNotificationService
+	var row *sql.Row
+
+	row = service.Db.Conn.QueryRow(`
+		WITH services AS (
+			SELECT
+				id,
+				prio,
+				service,
+				configuration::varchar
+			FROM notification n
+			ORDER BY
+				prio ASC
+		)
+		SELECT COALESCE(jsonb_agg(s.*), '[]')
+		FROM services s
+		`,
+	)
+	var dbData []byte
+	err = row.Scan(&dbData)
+	if err != nil {
+		err = werr.Wrap(err).WithCode("002-0006")
+		return
+	}
+
+	err = json.Unmarshal(dbData, &dbServices)
+	if err != nil {
+		err = werr.Wrap(err).WithCode("002-0007")
+		return
+	}
+
+	notificationManager = notification.NewManager(logger)
+	var service notification.Service
+	for _, dbService := range dbServices {
+		service, err = notification.ServiceFactory(
+			dbService.Service,
+			[]byte(dbService.Configuration),
+			dbService.Prio,
+			"blah",
+			//config.Application.NotificationBaseURL,
+			logger,
+		)
+		if err != nil {
+			err = werr.Wrap(err).WithData(dbService.Service)
+		}
+		notificationManager.AddService(service)
+	}
+
+	return
+} // }}}
+
+func AcknowledgeNotification(uuid string) (err error) { // {{{
+	_, err = service.Db.Conn.Exec(`UPDATE schedule SET acknowledged=true WHERE schedule_uuid=$1`, uuid)
+	if err != nil {
+		err = werr.Wrap(err).WithData(uuid)
+	}
+	return
+} // }}}

sql/00011.sql

@@ -0,0 +1,10 @@
+ CREATE TYPE notification_type AS ENUM('NTFY', 'PUSHOVER', 'HTTP', 'EMAIL');
+
+CREATE TABLE public.notification (
+	id serial4 NOT NULL,
+	service notification_type DEFAULT 'NTFY' NOT NULL,
+	"configuration" jsonb DEFAULT '{}'::jsonb NOT NULL,
+	prio int4 DEFAULT 0 NOT NULL,
+	CONSTRAINT notification_pk PRIMARY KEY (id),
+	CONSTRAINT notification_unique UNIQUE (prio)
+);