Merge pull request #547 from kaysond/master

Add support for disabling repeat notifications if the values haven't changed

.gitignore

@@ -65,4 +65,6 @@ scrutiny_test.db
 scrutiny.yaml
 coverage.txt
 /config
-/influxdb
+/influxdb
+.angular
+web.log

webapp/backend/pkg/database/helpers.go

@@ -1,12 +0,0 @@
-package database
-
-import (
-	"github.com/analogj/scrutiny/webapp/backend/pkg/models/measurements"
-	"sort"
-)
-
-func sortSmartMeasurementsDesc(smartResults []measurements.Smart) {
-	sort.SliceStable(smartResults, func(i, j int) bool {
-		return smartResults[i].Date.After(smartResults[j].Date)
-	})
-}

webapp/backend/pkg/database/helpers_test.go

@@ -1,30 +0,0 @@
-package database
-
-import (
-	"github.com/analogj/scrutiny/webapp/backend/pkg/models/measurements"
-	"github.com/stretchr/testify/require"
-	"testing"
-	"time"
-)
-
-func Test_sortSmartMeasurementsDesc_LatestFirst(t *testing.T) {
-	//setup
-	timeNow := time.Now()
-	smartResults := []measurements.Smart{
-		{
-			Date: timeNow.AddDate(0, 0, -2),
-		},
-		{
-			Date: timeNow,
-		},
-		{
-			Date: timeNow.AddDate(0, 0, -1),
-		},
-	}
-
-	//test
-	sortSmartMeasurementsDesc(smartResults)
-
-	//assert
-	require.Equal(t, smartResults[0].Date, timeNow)
-}

webapp/backend/pkg/database/interface.go

@@ -2,12 +2,15 @@ package database
 
 import (
 	"context"
+
 	"github.com/analogj/scrutiny/webapp/backend/pkg"
 	"github.com/analogj/scrutiny/webapp/backend/pkg/models"
 	"github.com/analogj/scrutiny/webapp/backend/pkg/models/collector"
 	"github.com/analogj/scrutiny/webapp/backend/pkg/models/measurements"
 )
 
+// Create mock using:
+// mockgen -source=webapp/backend/pkg/database/interface.go -destination=webapp/backend/pkg/database/mock/mock_database.go
 type DeviceRepo interface {
 	Close() error
 	HealthCheck(ctx context.Context) error
@@ -20,7 +23,7 @@ type DeviceRepo interface {
 	DeleteDevice(ctx context.Context, wwn string) error
 
 	SaveSmartAttributes(ctx context.Context, wwn string, collectorSmartData collector.SmartInfo) (measurements.Smart, error)
-	GetSmartAttributeHistory(ctx context.Context, wwn string, durationKey string, attributes []string) ([]measurements.Smart, error)
+	GetSmartAttributeHistory(ctx context.Context, wwn string, durationKey string, selectEntries int, selectEntriesOffset int, attributes []string) ([]measurements.Smart, error)
 
 	SaveSmartTemperature(ctx context.Context, wwn string, deviceProtocol string, collectorSmartData collector.SmartInfo) error
 

webapp/backend/pkg/database/mock/mock_database.go

@@ -0,0 +1,258 @@
+// Code generated by MockGen. DO NOT EDIT.
+// Source: webapp/backend/pkg/database/interface.go
+
+// Package mock_database is a generated GoMock package.
+package mock_database
+
+import (
+	context "context"
+	reflect "reflect"
+
+	pkg "github.com/analogj/scrutiny/webapp/backend/pkg"
+	models "github.com/analogj/scrutiny/webapp/backend/pkg/models"
+	collector "github.com/analogj/scrutiny/webapp/backend/pkg/models/collector"
+	measurements "github.com/analogj/scrutiny/webapp/backend/pkg/models/measurements"
+	gomock "github.com/golang/mock/gomock"
+)
+
+// MockDeviceRepo is a mock of DeviceRepo interface.
+type MockDeviceRepo struct {
+	ctrl     *gomock.Controller
+	recorder *MockDeviceRepoMockRecorder
+}
+
+// MockDeviceRepoMockRecorder is the mock recorder for MockDeviceRepo.
+type MockDeviceRepoMockRecorder struct {
+	mock *MockDeviceRepo
+}
+
+// NewMockDeviceRepo creates a new mock instance.
+func NewMockDeviceRepo(ctrl *gomock.Controller) *MockDeviceRepo {
+	mock := &MockDeviceRepo{ctrl: ctrl}
+	mock.recorder = &MockDeviceRepoMockRecorder{mock}
+	return mock
+}
+
+// EXPECT returns an object that allows the caller to indicate expected use.
+func (m *MockDeviceRepo) EXPECT() *MockDeviceRepoMockRecorder {
+	return m.recorder
+}
+
+// Close mocks base method.
+func (m *MockDeviceRepo) Close() error {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "Close")
+	ret0, _ := ret[0].(error)
+	return ret0
+}
+
+// Close indicates an expected call of Close.
+func (mr *MockDeviceRepoMockRecorder) Close() *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Close", reflect.TypeOf((*MockDeviceRepo)(nil).Close))
+}
+
+// DeleteDevice mocks base method.
+func (m *MockDeviceRepo) DeleteDevice(ctx context.Context, wwn string) error {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "DeleteDevice", ctx, wwn)
+	ret0, _ := ret[0].(error)
+	return ret0
+}
+
+// DeleteDevice indicates an expected call of DeleteDevice.
+func (mr *MockDeviceRepoMockRecorder) DeleteDevice(ctx, wwn interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "DeleteDevice", reflect.TypeOf((*MockDeviceRepo)(nil).DeleteDevice), ctx, wwn)
+}
+
+// GetDeviceDetails mocks base method.
+func (m *MockDeviceRepo) GetDeviceDetails(ctx context.Context, wwn string) (models.Device, error) {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "GetDeviceDetails", ctx, wwn)
+	ret0, _ := ret[0].(models.Device)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// GetDeviceDetails indicates an expected call of GetDeviceDetails.
+func (mr *MockDeviceRepoMockRecorder) GetDeviceDetails(ctx, wwn interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GetDeviceDetails", reflect.TypeOf((*MockDeviceRepo)(nil).GetDeviceDetails), ctx, wwn)
+}
+
+// GetDevices mocks base method.
+func (m *MockDeviceRepo) GetDevices(ctx context.Context) ([]models.Device, error) {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "GetDevices", ctx)
+	ret0, _ := ret[0].([]models.Device)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// GetDevices indicates an expected call of GetDevices.
+func (mr *MockDeviceRepoMockRecorder) GetDevices(ctx interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GetDevices", reflect.TypeOf((*MockDeviceRepo)(nil).GetDevices), ctx)
+}
+
+// GetSmartAttributeHistory mocks base method.
+func (m *MockDeviceRepo) GetSmartAttributeHistory(ctx context.Context, wwn, durationKey string, selectEntries, selectEntriesOffset int, attributes []string) ([]measurements.Smart, error) {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "GetSmartAttributeHistory", ctx, wwn, durationKey, selectEntries, selectEntriesOffset, attributes)
+	ret0, _ := ret[0].([]measurements.Smart)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// GetSmartAttributeHistory indicates an expected call of GetSmartAttributeHistory.
+func (mr *MockDeviceRepoMockRecorder) GetSmartAttributeHistory(ctx, wwn, durationKey, selectEntries, selectEntriesOffset, attributes interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GetSmartAttributeHistory", reflect.TypeOf((*MockDeviceRepo)(nil).GetSmartAttributeHistory), ctx, wwn, durationKey, selectEntries, selectEntriesOffset, attributes)
+}
+
+// GetSmartTemperatureHistory mocks base method.
+func (m *MockDeviceRepo) GetSmartTemperatureHistory(ctx context.Context, durationKey string) (map[string][]measurements.SmartTemperature, error) {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "GetSmartTemperatureHistory", ctx, durationKey)
+	ret0, _ := ret[0].(map[string][]measurements.SmartTemperature)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// GetSmartTemperatureHistory indicates an expected call of GetSmartTemperatureHistory.
+func (mr *MockDeviceRepoMockRecorder) GetSmartTemperatureHistory(ctx, durationKey interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GetSmartTemperatureHistory", reflect.TypeOf((*MockDeviceRepo)(nil).GetSmartTemperatureHistory), ctx, durationKey)
+}
+
+// GetSummary mocks base method.
+func (m *MockDeviceRepo) GetSummary(ctx context.Context) (map[string]*models.DeviceSummary, error) {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "GetSummary", ctx)
+	ret0, _ := ret[0].(map[string]*models.DeviceSummary)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// GetSummary indicates an expected call of GetSummary.
+func (mr *MockDeviceRepoMockRecorder) GetSummary(ctx interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GetSummary", reflect.TypeOf((*MockDeviceRepo)(nil).GetSummary), ctx)
+}
+
+// HealthCheck mocks base method.
+func (m *MockDeviceRepo) HealthCheck(ctx context.Context) error {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "HealthCheck", ctx)
+	ret0, _ := ret[0].(error)
+	return ret0
+}
+
+// HealthCheck indicates an expected call of HealthCheck.
+func (mr *MockDeviceRepoMockRecorder) HealthCheck(ctx interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "HealthCheck", reflect.TypeOf((*MockDeviceRepo)(nil).HealthCheck), ctx)
+}
+
+// LoadSettings mocks base method.
+func (m *MockDeviceRepo) LoadSettings(ctx context.Context) (*models.Settings, error) {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "LoadSettings", ctx)
+	ret0, _ := ret[0].(*models.Settings)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// LoadSettings indicates an expected call of LoadSettings.
+func (mr *MockDeviceRepoMockRecorder) LoadSettings(ctx interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "LoadSettings", reflect.TypeOf((*MockDeviceRepo)(nil).LoadSettings), ctx)
+}
+
+// RegisterDevice mocks base method.
+func (m *MockDeviceRepo) RegisterDevice(ctx context.Context, dev models.Device) error {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "RegisterDevice", ctx, dev)
+	ret0, _ := ret[0].(error)
+	return ret0
+}
+
+// RegisterDevice indicates an expected call of RegisterDevice.
+func (mr *MockDeviceRepoMockRecorder) RegisterDevice(ctx, dev interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "RegisterDevice", reflect.TypeOf((*MockDeviceRepo)(nil).RegisterDevice), ctx, dev)
+}
+
+// SaveSettings mocks base method.
+func (m *MockDeviceRepo) SaveSettings(ctx context.Context, settings models.Settings) error {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "SaveSettings", ctx, settings)
+	ret0, _ := ret[0].(error)
+	return ret0
+}
+
+// SaveSettings indicates an expected call of SaveSettings.
+func (mr *MockDeviceRepoMockRecorder) SaveSettings(ctx, settings interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "SaveSettings", reflect.TypeOf((*MockDeviceRepo)(nil).SaveSettings), ctx, settings)
+}
+
+// SaveSmartAttributes mocks base method.
+func (m *MockDeviceRepo) SaveSmartAttributes(ctx context.Context, wwn string, collectorSmartData collector.SmartInfo) (measurements.Smart, error) {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "SaveSmartAttributes", ctx, wwn, collectorSmartData)
+	ret0, _ := ret[0].(measurements.Smart)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// SaveSmartAttributes indicates an expected call of SaveSmartAttributes.
+func (mr *MockDeviceRepoMockRecorder) SaveSmartAttributes(ctx, wwn, collectorSmartData interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "SaveSmartAttributes", reflect.TypeOf((*MockDeviceRepo)(nil).SaveSmartAttributes), ctx, wwn, collectorSmartData)
+}
+
+// SaveSmartTemperature mocks base method.
+func (m *MockDeviceRepo) SaveSmartTemperature(ctx context.Context, wwn, deviceProtocol string, collectorSmartData collector.SmartInfo) error {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "SaveSmartTemperature", ctx, wwn, deviceProtocol, collectorSmartData)
+	ret0, _ := ret[0].(error)
+	return ret0
+}
+
+// SaveSmartTemperature indicates an expected call of SaveSmartTemperature.
+func (mr *MockDeviceRepoMockRecorder) SaveSmartTemperature(ctx, wwn, deviceProtocol, collectorSmartData interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "SaveSmartTemperature", reflect.TypeOf((*MockDeviceRepo)(nil).SaveSmartTemperature), ctx, wwn, deviceProtocol, collectorSmartData)
+}
+
+// UpdateDevice mocks base method.
+func (m *MockDeviceRepo) UpdateDevice(ctx context.Context, wwn string, collectorSmartData collector.SmartInfo) (models.Device, error) {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "UpdateDevice", ctx, wwn, collectorSmartData)
+	ret0, _ := ret[0].(models.Device)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// UpdateDevice indicates an expected call of UpdateDevice.
+func (mr *MockDeviceRepoMockRecorder) UpdateDevice(ctx, wwn, collectorSmartData interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "UpdateDevice", reflect.TypeOf((*MockDeviceRepo)(nil).UpdateDevice), ctx, wwn, collectorSmartData)
+}
+
+// UpdateDeviceStatus mocks base method.
+func (m *MockDeviceRepo) UpdateDeviceStatus(ctx context.Context, wwn string, status pkg.DeviceStatus) (models.Device, error) {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "UpdateDeviceStatus", ctx, wwn, status)
+	ret0, _ := ret[0].(models.Device)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// UpdateDeviceStatus indicates an expected call of UpdateDeviceStatus.
+func (mr *MockDeviceRepoMockRecorder) UpdateDeviceStatus(ctx, wwn, status interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "UpdateDeviceStatus", reflect.TypeOf((*MockDeviceRepo)(nil).UpdateDeviceStatus), ctx, wwn, status)
+}

webapp/backend/pkg/database/scrutiny_repository_device_smart_attributes.go

@@ -3,13 +3,14 @@ package database
 import (
 	"context"
 	"fmt"
+	"strings"
+	"time"
+
 	"github.com/analogj/scrutiny/webapp/backend/pkg/models/collector"
 	"github.com/analogj/scrutiny/webapp/backend/pkg/models/measurements"
 	influxdb2 "github.com/influxdata/influxdb-client-go/v2"
 	"github.com/influxdata/influxdb-client-go/v2/api"
 	log "github.com/sirupsen/logrus"
-	"strings"
-	"time"
 )
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -30,14 +31,17 @@ func (sr *scrutinyRepository) SaveSmartAttributes(ctx context.Context, wwn strin
 }
 
 // GetSmartAttributeHistory MUST return in sorted order, where newest entries are at the beginning of the list, and oldest are at the end.
-func (sr *scrutinyRepository) GetSmartAttributeHistory(ctx context.Context, wwn string, durationKey string, attributes []string) ([]measurements.Smart, error) {
+// When selectEntries is > 0, only the most recent selectEntries database entries are returned, starting from the selectEntriesOffset entry.
+// For example, with selectEntries = 5, selectEntries = 0, the most recent 5 are returned. With selectEntries = 3, selectEntries = 2, entries
+// 2 to 4 are returned (2 being the third newest, since it is zero-indexed)
+func (sr *scrutinyRepository) GetSmartAttributeHistory(ctx context.Context, wwn string, durationKey string, selectEntries int, selectEntriesOffset int, attributes []string) ([]measurements.Smart, error) {
 	// Get SMartResults from InfluxDB
 
 	//TODO: change the filter startrange to a real number.
 
 	// Get parser flux query result
 	//appConfig.GetString("web.influxdb.bucket")
-	queryStr := sr.aggregateSmartAttributesQuery(wwn, durationKey)
+	queryStr := sr.aggregateSmartAttributesQuery(wwn, durationKey, selectEntries, selectEntriesOffset, attributes)
 	log.Infoln(queryStr)
 
 	smartResults := []measurements.Smart{}
@@ -65,9 +69,6 @@ func (sr *scrutinyRepository) GetSmartAttributeHistory(ctx context.Context, wwn
 		return nil, err
 	}
 
-	//we have to sort the smartResults again, because the `union` command will return multiple 'tables' and only sort the records in each table.
-	sortSmartMeasurementsDesc(smartResults)
-
 	return smartResults, nil
 
 	//if err := device.SquashHistory(); err != nil {
@@ -99,7 +100,7 @@ func (sr *scrutinyRepository) saveDatapoint(influxWriteApi api.WriteAPIBlocking,
 	return influxWriteApi.WritePoint(ctx, p)
 }
 
-func (sr *scrutinyRepository) aggregateSmartAttributesQuery(wwn string, durationKey string) string {
+func (sr *scrutinyRepository) aggregateSmartAttributesQuery(wwn string, durationKey string, selectEntries int, selectEntriesOffset int, attributes []string) string {
 
 	/*
 
@@ -108,28 +109,34 @@ func (sr *scrutinyRepository) aggregateSmartAttributesQuery(wwn string, duration
 		|> range(start: -1w, stop: now())
 		|> filter(fn: (r) => r["_measurement"] == "smart" )
 		|> filter(fn: (r) => r["device_wwn"] == "0x5000c5002df89099" )
+		|> tail(n: 10, offset: 0)
 		|> schema.fieldsAsCols()
 
 		monthData = from(bucket: "metrics_weekly")
 		|> range(start: -1mo, stop: -1w)
 		|> filter(fn: (r) => r["_measurement"] == "smart" )
 		|> filter(fn: (r) => r["device_wwn"] == "0x5000c5002df89099" )
+		|> tail(n: 10, offset: 0)
 		|> schema.fieldsAsCols()
 
 		yearData = from(bucket: "metrics_monthly")
 		|> range(start: -1y, stop: -1mo)
 		|> filter(fn: (r) => r["_measurement"] == "smart" )
 		|> filter(fn: (r) => r["device_wwn"] == "0x5000c5002df89099" )
+		|> tail(n: 10, offset: 0)
 		|> schema.fieldsAsCols()
 
 		foreverData = from(bucket: "metrics_yearly")
 		|> range(start: -10y, stop: -1y)
 		|> filter(fn: (r) => r["_measurement"] == "smart" )
 		|> filter(fn: (r) => r["device_wwn"] == "0x5000c5002df89099" )
+		|> tail(n: 10, offset: 0)
 		|> schema.fieldsAsCols()
 
 		union(tables: [weekData, monthData, yearData, foreverData])
-		|> sort(columns: ["_time"], desc: false)
+		|> group()
+		|> sort(columns: ["_time"], desc: true)
+		|> tail(n: 6, offset: 4)
 		|> yield(name: "last")
 
 	*/
@@ -140,34 +147,57 @@ func (sr *scrutinyRepository) aggregateSmartAttributesQuery(wwn string, duration
 
 	nestedDurationKeys := sr.lookupNestedDurationKeys(durationKey)
 
-	subQueryNames := []string{}
+	if len(nestedDurationKeys) == 1 {
-	for _, nestedDurationKey := range nestedDurationKeys {
-		bucketName := sr.lookupBucketName(nestedDurationKey)
-		durationRange := sr.lookupDuration(nestedDurationKey)
-
-		subQueryNames = append(subQueryNames, fmt.Sprintf(`%sData`, nestedDurationKey))
-		partialQueryStr = append(partialQueryStr, []string{
-			fmt.Sprintf(`%sData = from(bucket: "%s")`, nestedDurationKey, bucketName),
-			fmt.Sprintf(`|> range(start: %s, stop: %s)`, durationRange[0], durationRange[1]),
-			`|> filter(fn: (r) => r["_measurement"] == "smart" )`,
-			fmt.Sprintf(`|> filter(fn: (r) => r["device_wwn"] == "%s" )`, wwn),
-			"|> schema.fieldsAsCols()",
-		}...)
-	}
-
-	if len(subQueryNames) == 1 {
 		//there's only one bucket being queried, no need to union, just aggregate the dataset and return
 		partialQueryStr = append(partialQueryStr, []string{
-			subQueryNames[0],
+			sr.generateSmartAttributesSubquery(wwn, nestedDurationKeys[0], selectEntries, selectEntriesOffset, attributes),
+			fmt.Sprintf(`%sData`, nestedDurationKeys[0]),
+			`|> sort(columns: ["_time"], desc: true)`,
 			`|> yield()`,
 		}...)
-	} else {
+		return strings.Join(partialQueryStr, "\n")
-		partialQueryStr = append(partialQueryStr, []string{
-			fmt.Sprintf("union(tables: [%s])", strings.Join(subQueryNames, ", ")),
-			`|> sort(columns: ["_time"], desc: false)`,
-			`|> yield(name: "last")`,
-		}...)
 	}
 
+	subQueries := []string{}
+	subQueryNames := []string{}
+	for _, nestedDurationKey := range nestedDurationKeys {
+		subQueryNames = append(subQueryNames, fmt.Sprintf(`%sData`, nestedDurationKey))
+		if selectEntries > 0 {
+			// We only need the last `n + offset` # of entries from each table to guarantee we can
+			// get the last `n` # of entries starting from `offset` of the union
+			subQueries = append(subQueries, sr.generateSmartAttributesSubquery(wwn, nestedDurationKey, selectEntries+selectEntriesOffset, 0, attributes))
+		} else {
+			subQueries = append(subQueries, sr.generateSmartAttributesSubquery(wwn, nestedDurationKey, 0, 0, attributes))
+		}
+	}
+	partialQueryStr = append(partialQueryStr, subQueries...)
+	partialQueryStr = append(partialQueryStr, []string{
+		fmt.Sprintf("union(tables: [%s])", strings.Join(subQueryNames, ", ")),
+		`|> group()`,
+		`|> sort(columns: ["_time"], desc: true)`,
+	}...)
+	if selectEntries > 0 {
+		partialQueryStr = append(partialQueryStr, fmt.Sprintf(`|> tail(n: %d, offset: %d)`, selectEntries, selectEntriesOffset))
+	}
+	partialQueryStr = append(partialQueryStr, `|> yield(name: "last")`)
+
+	return strings.Join(partialQueryStr, "\n")
+}
+
+func (sr *scrutinyRepository) generateSmartAttributesSubquery(wwn string, durationKey string, selectEntries int, selectEntriesOffset int, attributes []string) string {
+	bucketName := sr.lookupBucketName(durationKey)
+	durationRange := sr.lookupDuration(durationKey)
+
+	partialQueryStr := []string{
+		fmt.Sprintf(`%sData = from(bucket: "%s")`, durationKey, bucketName),
+		fmt.Sprintf(`|> range(start: %s, stop: %s)`, durationRange[0], durationRange[1]),
+		`|> filter(fn: (r) => r["_measurement"] == "smart" )`,
+		fmt.Sprintf(`|> filter(fn: (r) => r["device_wwn"] == "%s" )`, wwn),
+	}
+	if selectEntries > 0 {
+		partialQueryStr = append(partialQueryStr, fmt.Sprintf(`|> tail(n: %d, offset: %d)`, selectEntries, selectEntriesOffset))
+	}
+	partialQueryStr = append(partialQueryStr, "|> schema.fieldsAsCols()")
+
 	return strings.Join(partialQueryStr, "\n")
 }

webapp/backend/pkg/database/scrutiny_repository_migrations.go

@@ -4,6 +4,9 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"strconv"
+	"time"
+
 	"github.com/analogj/scrutiny/webapp/backend/pkg"
 	"github.com/analogj/scrutiny/webapp/backend/pkg/database/migrations/m20201107210306"
 	"github.com/analogj/scrutiny/webapp/backend/pkg/database/migrations/m20220503120000"
@@ -17,8 +20,6 @@ import (
 	"github.com/influxdata/influxdb-client-go/v2/api/http"
 	log "github.com/sirupsen/logrus"
 	"gorm.io/gorm"
-	"strconv"
-	"time"
 )
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -369,6 +370,21 @@ func (sr *scrutinyRepository) Migrate(ctx context.Context) error {
 				return tx.Create(&defaultSettings).Error
 			},
 		},
+		{
+			ID: "m20231123123300", // add repeat_notifications setting.
+			Migrate: func(tx *gorm.DB) error {
+				//add repeat_notifications setting default.
+				var defaultSettings = []m20220716214900.Setting{
+					{
+						SettingKeyName:        "metrics.repeat_notifications",
+						SettingKeyDescription: "Whether to repeat all notifications or just when values change (true | false)",
+						SettingDataType:       "bool",
+						SettingValueBool:      true,
+					},
+				}
+				return tx.Create(&defaultSettings).Error
+			},
+		},
 	})
 
 	if err := m.Migrate(); err != nil {

webapp/backend/pkg/models/measurements/smart_ata_attribute.go

@@ -2,10 +2,11 @@ package measurements
 
 import (
 	"fmt"
-	"github.com/analogj/scrutiny/webapp/backend/pkg"
-	"github.com/analogj/scrutiny/webapp/backend/pkg/thresholds"
 	"strconv"
 	"strings"
+
+	"github.com/analogj/scrutiny/webapp/backend/pkg"
+	"github.com/analogj/scrutiny/webapp/backend/pkg/thresholds"
 )
 
 type SmartAtaAttribute struct {
@@ -24,6 +25,10 @@ type SmartAtaAttribute struct {
 	FailureRate      float64             `json:"failure_rate,omitempty"`
 }
 
+func (sa *SmartAtaAttribute) GetTransformedValue() int64 {
+	return sa.TransformedValue
+}
+
 func (sa *SmartAtaAttribute) GetStatus() pkg.AttributeStatus {
 	return sa.Status
 }

webapp/backend/pkg/models/measurements/smart_attribute.go

@@ -6,4 +6,5 @@ type SmartAttribute interface {
 	Flatten() (fields map[string]interface{})
 	Inflate(key string, val interface{})
 	GetStatus() pkg.AttributeStatus
+	GetTransformedValue() int64
 }

webapp/backend/pkg/models/measurements/smart_nvme_attribute.go

@@ -2,9 +2,10 @@ package measurements
 
 import (
 	"fmt"
+	"strings"
+
 	"github.com/analogj/scrutiny/webapp/backend/pkg"
 	"github.com/analogj/scrutiny/webapp/backend/pkg/thresholds"
-	"strings"
 )
 
 type SmartNvmeAttribute struct {
@@ -18,6 +19,10 @@ type SmartNvmeAttribute struct {
 	FailureRate      float64             `json:"failure_rate,omitempty"`
 }
 
+func (sa *SmartNvmeAttribute) GetTransformedValue() int64 {
+	return sa.TransformedValue
+}
+
 func (sa *SmartNvmeAttribute) GetStatus() pkg.AttributeStatus {
 	return sa.Status
 }

webapp/backend/pkg/models/measurements/smart_scsci_attribute.go

@@ -2,9 +2,10 @@ package measurements
 
 import (
 	"fmt"
+	"strings"
+
 	"github.com/analogj/scrutiny/webapp/backend/pkg"
 	"github.com/analogj/scrutiny/webapp/backend/pkg/thresholds"
-	"strings"
 )
 
 type SmartScsiAttribute struct {
@@ -18,6 +19,10 @@ type SmartScsiAttribute struct {
 	FailureRate      float64             `json:"failure_rate,omitempty"`
 }
 
+func (sa *SmartScsiAttribute) GetTransformedValue() int64 {
+	return sa.TransformedValue
+}
+
 func (sa *SmartScsiAttribute) GetStatus() pkg.AttributeStatus {
 	return sa.Status
 }

webapp/backend/pkg/models/settings.go

@@ -17,8 +17,9 @@ type Settings struct {
 	LineStroke       string `json:"line_stroke" mapstructure:"line_stroke"`
 
 	Metrics struct {
-		NotifyLevel            int `json:"notify_level" mapstructure:"notify_level"`
+		NotifyLevel            int  `json:"notify_level" mapstructure:"notify_level"`
-		StatusFilterAttributes int `json:"status_filter_attributes" mapstructure:"status_filter_attributes"`
+		StatusFilterAttributes int  `json:"status_filter_attributes" mapstructure:"status_filter_attributes"`
-		StatusThreshold        int `json:"status_threshold" mapstructure:"status_threshold"`
+		StatusThreshold        int  `json:"status_threshold" mapstructure:"status_threshold"`
+		RepeatNotifications    bool `json:"repeat_notifications" mapstructure:"repeat_notifications"`
 	} `json:"metrics" mapstructure:"metrics"`
 }

webapp/backend/pkg/models/testdata/helper.go

@@ -4,13 +4,14 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
-	"github.com/analogj/scrutiny/webapp/backend/pkg/models/collector"
 	"io"
 	"io/ioutil"
 	"log"
 	"net/http"
 	"os"
 	"time"
+
+	"github.com/analogj/scrutiny/webapp/backend/pkg/models/collector"
 )
 
 func main() {
@@ -32,7 +33,7 @@ func main() {
 		log.Fatalf("ERROR %v", err)
 	}
 	defer file.Close()
-	_, err = SendPostRequest("http://localhost:9090/api/devices/register", file)
+	_, err = SendPostRequest("http://localhost:8080/api/devices/register", file)
 	if err != nil {
 		log.Fatalf("ERROR %v", err)
 	}
@@ -46,7 +47,7 @@ func main() {
 					log.Fatalf("ERROR %v", err)
 				}
 
-				_, err = SendPostRequest(fmt.Sprintf("http://localhost:9090/api/device/%s/smart", diskId), smartDataReader)
+				_, err = SendPostRequest(fmt.Sprintf("http://localhost:8080/api/device/%s/smart", diskId), smartDataReader)
 				if err != nil {
 					log.Fatalf("ERROR %v", err)
 				}

webapp/backend/pkg/notify/notify.go

@@ -15,11 +15,13 @@ import (
 	"github.com/analogj/go-util/utils"
 	"github.com/analogj/scrutiny/webapp/backend/pkg"
 	"github.com/analogj/scrutiny/webapp/backend/pkg/config"
+	"github.com/analogj/scrutiny/webapp/backend/pkg/database"
 	"github.com/analogj/scrutiny/webapp/backend/pkg/models"
 	"github.com/analogj/scrutiny/webapp/backend/pkg/models/measurements"
 	"github.com/analogj/scrutiny/webapp/backend/pkg/thresholds"
 	"github.com/containrrr/shoutrrr"
 	shoutrrrTypes "github.com/containrrr/shoutrrr/pkg/types"
+	"github.com/gin-gonic/gin"
 	"github.com/sirupsen/logrus"
 	"golang.org/x/sync/errgroup"
 )
@@ -30,7 +32,7 @@ const NotifyFailureTypeSmartFailure = "SmartFailure"
 const NotifyFailureTypeScrutinyFailure = "ScrutinyFailure"
 
 // ShouldNotify check if the error Message should be filtered (level mismatch or filtered_attributes)
-func ShouldNotify(device models.Device, smartAttrs measurements.Smart, statusThreshold pkg.MetricsStatusThreshold, statusFilterAttributes pkg.MetricsStatusFilterAttributes) bool {
+func ShouldNotify(logger logrus.FieldLogger, device models.Device, smartAttrs measurements.Smart, statusThreshold pkg.MetricsStatusThreshold, statusFilterAttributes pkg.MetricsStatusFilterAttributes, repeatNotifications bool, c *gin.Context, deviceRepo database.DeviceRepo) bool {
 	// 1. check if the device is healthy
 	if device.DeviceStatus == pkg.DeviceStatusPassed {
 		return false
@@ -54,52 +56,69 @@ func ShouldNotify(device models.Device, smartAttrs measurements.Smart, statusThr
 		requiredAttrStatus = pkg.AttributeStatusFailedScrutiny
 	}
 
-	// 2. check if the attributes that are failing should be filtered (non-critical)
+	// This is the only case where individual attributes need not be considered
-	// 3. for any unfiltered attribute, store the failure reason (Smart or Scrutiny)
+	if statusFilterAttributes == pkg.MetricsStatusFilterAttributesAll && repeatNotifications {
-	if statusFilterAttributes == pkg.MetricsStatusFilterAttributesCritical {
+		return pkg.DeviceStatusHas(device.DeviceStatus, requiredDeviceStatus)
-		hasFailingCriticalAttr := false
+	}
-		var statusFailingCriticalAttr pkg.AttributeStatus
 
-		for attrId, attrData := range smartAttrs.Attributes {
+	var failingAttributes []string
-			//find failing attribute
+	// Loop through the attributes to find the failing ones
-			if attrData.GetStatus() == pkg.AttributeStatusPassed {
+	for attrId, attrData := range smartAttrs.Attributes {
-				continue //skip all passing attributes
+		var status pkg.AttributeStatus = attrData.GetStatus()
-			}
+		// Skip over passing attributes
+		if status == pkg.AttributeStatusPassed {
+			continue
+		}
 
-			// merge the status's of all critical attributes
+		// If the user only wants to consider critical attributes, we have to check
-			statusFailingCriticalAttr = pkg.AttributeStatusSet(statusFailingCriticalAttr, attrData.GetStatus())
+		// if the not-passing attribute is critical or not
-
+		if statusFilterAttributes == pkg.MetricsStatusFilterAttributesCritical {
-			//found a failing attribute, see if its critical
+			critical := false
-			if device.IsScsi() && thresholds.ScsiMetadata[attrId].Critical {
+			if device.IsScsi() {
-				hasFailingCriticalAttr = true
+				critical = thresholds.ScsiMetadata[attrId].Critical
-			} else if device.IsNvme() && thresholds.NmveMetadata[attrId].Critical {
+			} else if device.IsNvme() {
-				hasFailingCriticalAttr = true
+				critical = thresholds.NmveMetadata[attrId].Critical
 			} else {
 				//this is ATA
 				attrIdInt, err := strconv.Atoi(attrId)
 				if err != nil {
 					continue
 				}
-				if thresholds.AtaMetadata[attrIdInt].Critical {
+				critical = thresholds.AtaMetadata[attrIdInt].Critical
-					hasFailingCriticalAttr = true
+			}
-				}
+			// Skip non-critical, non-passing attributes when this setting is on
+			if !critical {
+				continue
 			}
-
 		}
 
-		if !hasFailingCriticalAttr {
+		// Record any attribute that doesn't get skipped by the above two checks
-			//no critical attributes are failing, and notifyFilterAttributes == "critical"
+		failingAttributes = append(failingAttributes, attrId)
-			return false
-		} else {
-			// check if any of the critical attributes have a status that we're looking for
-			return pkg.AttributeStatusHas(statusFailingCriticalAttr, requiredAttrStatus)
-		}
-
-	} else {
-		// 2. SKIP - we are processing every attribute.
-		// 3. check if the device failure level matches the wanted failure level.
-		return pkg.DeviceStatusHas(device.DeviceStatus, requiredDeviceStatus)
 	}
+
+	// If the user doesn't want repeated notifications when the failing value doesn't change, we need to get the last value from the db
+	var lastPoints []measurements.Smart
+	var err error
+	if !repeatNotifications {
+		lastPoints, err = deviceRepo.GetSmartAttributeHistory(c, c.Param("wwn"), database.DURATION_KEY_FOREVER, 1, 1, failingAttributes)
+		if err == nil || len(lastPoints) < 1 {
+			logger.Warningln("Could not get the most recent data points from the database. This is expected to happen only if this is the very first submission of data for the device.")
+		}
+	}
+	for _, attrId := range failingAttributes {
+		attrStatus := smartAttrs.Attributes[attrId].GetStatus()
+		if pkg.AttributeStatusHas(attrStatus, requiredAttrStatus) {
+			if repeatNotifications {
+				return true
+			}
+			// This is checked again here to avoid repeating the entire for loop in the check above.
+			// Probably unnoticeably worse performance, but cleaner code.
+			if err != nil || len(lastPoints) < 1 || lastPoints[0].Attributes[attrId].GetTransformedValue() != smartAttrs.Attributes[attrId].GetTransformedValue() {
+				return true
+			}
+		}
+	}
+	return false
 }
 
 // TODO: include user label for device.
@@ -222,7 +241,7 @@ func (n *Notify) Send() error {
 	notifyScripts := []string{}
 	notifyShoutrrr := []string{}
 
-	for ndx, _ := range configUrls {
+	for ndx := range configUrls {
 		if strings.HasPrefix(configUrls[ndx], "https://") || strings.HasPrefix(configUrls[ndx], "http://") {
 			notifyWebhooks = append(notifyWebhooks, configUrls[ndx])
 		} else if strings.HasPrefix(configUrls[ndx], "script://") {

webapp/backend/pkg/notify/notify_test.go

@@ -1,13 +1,20 @@
 package notify
 
 import (
+	"errors"
 	"fmt"
-	"github.com/analogj/scrutiny/webapp/backend/pkg"
-	"github.com/analogj/scrutiny/webapp/backend/pkg/models"
-	"github.com/analogj/scrutiny/webapp/backend/pkg/models/measurements"
-	"github.com/stretchr/testify/require"
 	"testing"
 	"time"
+
+	"github.com/analogj/scrutiny/webapp/backend/pkg"
+	"github.com/analogj/scrutiny/webapp/backend/pkg/database"
+	mock_database "github.com/analogj/scrutiny/webapp/backend/pkg/database/mock"
+	"github.com/analogj/scrutiny/webapp/backend/pkg/models"
+	"github.com/analogj/scrutiny/webapp/backend/pkg/models/measurements"
+	"github.com/gin-gonic/gin"
+	"github.com/golang/mock/gomock"
+	"github.com/sirupsen/logrus"
+	"github.com/stretchr/testify/require"
 )
 
 func TestShouldNotify_MustSkipPassingDevices(t *testing.T) {
@@ -20,22 +27,27 @@ func TestShouldNotify_MustSkipPassingDevices(t *testing.T) {
 	statusThreshold := pkg.MetricsStatusThresholdBoth
 	notifyFilterAttributes := pkg.MetricsStatusFilterAttributesAll
 
+	mockCtrl := gomock.NewController(t)
+	defer mockCtrl.Finish()
+	fakeDatabase := mock_database.NewMockDeviceRepo(mockCtrl)
 	//assert
-	require.False(t, ShouldNotify(device, smartAttrs, statusThreshold, notifyFilterAttributes))
+	require.False(t, ShouldNotify(logrus.StandardLogger(), device, smartAttrs, statusThreshold, notifyFilterAttributes, true, &gin.Context{}, fakeDatabase))
 }
 
 func TestShouldNotify_MetricsStatusThresholdBoth_FailingSmartDevice(t *testing.T) {
 	t.Parallel()
-	//setup
+	//setupD
 	device := models.Device{
 		DeviceStatus: pkg.DeviceStatusFailedSmart,
 	}
 	smartAttrs := measurements.Smart{}
 	statusThreshold := pkg.MetricsStatusThresholdBoth
 	notifyFilterAttributes := pkg.MetricsStatusFilterAttributesAll
-
+	mockCtrl := gomock.NewController(t)
+	defer mockCtrl.Finish()
+	fakeDatabase := mock_database.NewMockDeviceRepo(mockCtrl)
 	//assert
-	require.True(t, ShouldNotify(device, smartAttrs, statusThreshold, notifyFilterAttributes))
+	require.True(t, ShouldNotify(logrus.StandardLogger(), device, smartAttrs, statusThreshold, notifyFilterAttributes, true, &gin.Context{}, fakeDatabase))
 }
 
 func TestShouldNotify_MetricsStatusThresholdSmart_FailingSmartDevice(t *testing.T) {
@@ -47,9 +59,11 @@ func TestShouldNotify_MetricsStatusThresholdSmart_FailingSmartDevice(t *testing.
 	smartAttrs := measurements.Smart{}
 	statusThreshold := pkg.MetricsStatusThresholdSmart
 	notifyFilterAttributes := pkg.MetricsStatusFilterAttributesAll
-
+	mockCtrl := gomock.NewController(t)
+	defer mockCtrl.Finish()
+	fakeDatabase := mock_database.NewMockDeviceRepo(mockCtrl)
 	//assert
-	require.True(t, ShouldNotify(device, smartAttrs, statusThreshold, notifyFilterAttributes))
+	require.True(t, ShouldNotify(logrus.StandardLogger(), device, smartAttrs, statusThreshold, notifyFilterAttributes, true, &gin.Context{}, fakeDatabase))
 }
 
 func TestShouldNotify_MetricsStatusThresholdScrutiny_FailingSmartDevice(t *testing.T) {
@@ -61,9 +75,11 @@ func TestShouldNotify_MetricsStatusThresholdScrutiny_FailingSmartDevice(t *testi
 	smartAttrs := measurements.Smart{}
 	statusThreshold := pkg.MetricsStatusThresholdScrutiny
 	notifyFilterAttributes := pkg.MetricsStatusFilterAttributesAll
-
+	mockCtrl := gomock.NewController(t)
+	defer mockCtrl.Finish()
+	fakeDatabase := mock_database.NewMockDeviceRepo(mockCtrl)
 	//assert
-	require.False(t, ShouldNotify(device, smartAttrs, statusThreshold, notifyFilterAttributes))
+	require.False(t, ShouldNotify(logrus.StandardLogger(), device, smartAttrs, statusThreshold, notifyFilterAttributes, true, &gin.Context{}, fakeDatabase))
 }
 
 func TestShouldNotify_MetricsStatusFilterAttributesCritical_WithCriticalAttrs(t *testing.T) {
@@ -79,9 +95,12 @@ func TestShouldNotify_MetricsStatusFilterAttributesCritical_WithCriticalAttrs(t
 	}}
 	statusThreshold := pkg.MetricsStatusThresholdBoth
 	notifyFilterAttributes := pkg.MetricsStatusFilterAttributesCritical
+	mockCtrl := gomock.NewController(t)
+	defer mockCtrl.Finish()
+	fakeDatabase := mock_database.NewMockDeviceRepo(mockCtrl)
 
 	//assert
-	require.True(t, ShouldNotify(device, smartAttrs, statusThreshold, notifyFilterAttributes))
+	require.True(t, ShouldNotify(logrus.StandardLogger(), device, smartAttrs, statusThreshold, notifyFilterAttributes, true, &gin.Context{}, fakeDatabase))
 }
 
 func TestShouldNotify_MetricsStatusFilterAttributesCritical_WithMultipleCriticalAttrs(t *testing.T) {
@@ -100,9 +119,12 @@ func TestShouldNotify_MetricsStatusFilterAttributesCritical_WithMultipleCritical
 	}}
 	statusThreshold := pkg.MetricsStatusThresholdBoth
 	notifyFilterAttributes := pkg.MetricsStatusFilterAttributesCritical
+	mockCtrl := gomock.NewController(t)
+	defer mockCtrl.Finish()
+	fakeDatabase := mock_database.NewMockDeviceRepo(mockCtrl)
 
 	//assert
-	require.True(t, ShouldNotify(device, smartAttrs, statusThreshold, notifyFilterAttributes))
+	require.True(t, ShouldNotify(logrus.StandardLogger(), device, smartAttrs, statusThreshold, notifyFilterAttributes, true, &gin.Context{}, fakeDatabase))
 }
 
 func TestShouldNotify_MetricsStatusFilterAttributesCritical_WithNoCriticalAttrs(t *testing.T) {
@@ -118,9 +140,12 @@ func TestShouldNotify_MetricsStatusFilterAttributesCritical_WithNoCriticalAttrs(
 	}}
 	statusThreshold := pkg.MetricsStatusThresholdBoth
 	notifyFilterAttributes := pkg.MetricsStatusFilterAttributesCritical
+	mockCtrl := gomock.NewController(t)
+	defer mockCtrl.Finish()
+	fakeDatabase := mock_database.NewMockDeviceRepo(mockCtrl)
 
 	//assert
-	require.False(t, ShouldNotify(device, smartAttrs, statusThreshold, notifyFilterAttributes))
+	require.False(t, ShouldNotify(logrus.StandardLogger(), device, smartAttrs, statusThreshold, notifyFilterAttributes, true, &gin.Context{}, fakeDatabase))
 }
 
 func TestShouldNotify_MetricsStatusFilterAttributesCritical_WithNoFailingCriticalAttrs(t *testing.T) {
@@ -136,9 +161,12 @@ func TestShouldNotify_MetricsStatusFilterAttributesCritical_WithNoFailingCritica
 	}}
 	statusThreshold := pkg.MetricsStatusThresholdBoth
 	notifyFilterAttributes := pkg.MetricsStatusFilterAttributesCritical
+	mockCtrl := gomock.NewController(t)
+	defer mockCtrl.Finish()
+	fakeDatabase := mock_database.NewMockDeviceRepo(mockCtrl)
 
 	//assert
-	require.False(t, ShouldNotify(device, smartAttrs, statusThreshold, notifyFilterAttributes))
+	require.False(t, ShouldNotify(logrus.StandardLogger(), device, smartAttrs, statusThreshold, notifyFilterAttributes, true, &gin.Context{}, fakeDatabase))
 }
 
 func TestShouldNotify_MetricsStatusFilterAttributesCritical_MetricsStatusThresholdSmart_WithCriticalAttrsFailingScrutiny(t *testing.T) {
@@ -157,9 +185,77 @@ func TestShouldNotify_MetricsStatusFilterAttributesCritical_MetricsStatusThresho
 	}}
 	statusThreshold := pkg.MetricsStatusThresholdSmart
 	notifyFilterAttributes := pkg.MetricsStatusFilterAttributesCritical
+	mockCtrl := gomock.NewController(t)
+	defer mockCtrl.Finish()
+	fakeDatabase := mock_database.NewMockDeviceRepo(mockCtrl)
 
 	//assert
-	require.False(t, ShouldNotify(device, smartAttrs, statusThreshold, notifyFilterAttributes))
+	require.False(t, ShouldNotify(logrus.StandardLogger(), device, smartAttrs, statusThreshold, notifyFilterAttributes, true, &gin.Context{}, fakeDatabase))
+}
+func TestShouldNotify_NoRepeat_DatabaseFailure(t *testing.T) {
+	t.Parallel()
+	//setup
+	device := models.Device{
+		DeviceStatus: pkg.DeviceStatusFailedScrutiny,
+	}
+	smartAttrs := measurements.Smart{Attributes: map[string]measurements.SmartAttribute{
+		"5": &measurements.SmartAtaAttribute{
+			Status: pkg.AttributeStatusFailedScrutiny,
+		},
+	}}
+	statusThreshold := pkg.MetricsStatusThresholdBoth
+	notifyFilterAttributes := pkg.MetricsStatusFilterAttributesAll
+	mockCtrl := gomock.NewController(t)
+	defer mockCtrl.Finish()
+	fakeDatabase := mock_database.NewMockDeviceRepo(mockCtrl)
+	fakeDatabase.EXPECT().GetSmartAttributeHistory(&gin.Context{}, "", database.DURATION_KEY_FOREVER, 1, 1, []string{"5"}).Return([]measurements.Smart{}, errors.New("")).Times(1)
+
+	//assert
+	require.True(t, ShouldNotify(logrus.StandardLogger(), device, smartAttrs, statusThreshold, notifyFilterAttributes, false, &gin.Context{}, fakeDatabase))
+}
+
+func TestShouldNotify_NoRepeat_NoDatabaseData(t *testing.T) {
+	t.Parallel()
+	//setup
+	device := models.Device{
+		DeviceStatus: pkg.DeviceStatusFailedScrutiny,
+	}
+	smartAttrs := measurements.Smart{Attributes: map[string]measurements.SmartAttribute{
+		"5": &measurements.SmartAtaAttribute{
+			Status: pkg.AttributeStatusFailedScrutiny,
+		},
+	}}
+	statusThreshold := pkg.MetricsStatusThresholdBoth
+	notifyFilterAttributes := pkg.MetricsStatusFilterAttributesAll
+	mockCtrl := gomock.NewController(t)
+	defer mockCtrl.Finish()
+	fakeDatabase := mock_database.NewMockDeviceRepo(mockCtrl)
+	fakeDatabase.EXPECT().GetSmartAttributeHistory(&gin.Context{}, "", database.DURATION_KEY_FOREVER, 1, 1, []string{"5"}).Return([]measurements.Smart{}, nil).Times(1)
+
+	//assert
+	require.True(t, ShouldNotify(logrus.StandardLogger(), device, smartAttrs, statusThreshold, notifyFilterAttributes, false, &gin.Context{}, fakeDatabase))
+}
+func TestShouldNotify_NoRepeat(t *testing.T) {
+	t.Parallel()
+	//setup
+	device := models.Device{
+		DeviceStatus: pkg.DeviceStatusFailedScrutiny,
+	}
+	smartAttrs := measurements.Smart{Attributes: map[string]measurements.SmartAttribute{
+		"5": &measurements.SmartAtaAttribute{
+			Status:           pkg.AttributeStatusFailedScrutiny,
+			TransformedValue: 0,
+		},
+	}}
+	statusThreshold := pkg.MetricsStatusThresholdBoth
+	notifyFilterAttributes := pkg.MetricsStatusFilterAttributesAll
+	mockCtrl := gomock.NewController(t)
+	defer mockCtrl.Finish()
+	fakeDatabase := mock_database.NewMockDeviceRepo(mockCtrl)
+	fakeDatabase.EXPECT().GetSmartAttributeHistory(&gin.Context{}, "", database.DURATION_KEY_FOREVER, 1, 1, []string{"5"}).Return([]measurements.Smart{smartAttrs}, nil).Times(1)
+
+	//assert
+	require.False(t, ShouldNotify(logrus.StandardLogger(), device, smartAttrs, statusThreshold, notifyFilterAttributes, false, &gin.Context{}, fakeDatabase))
 }
 
 func TestNewPayload(t *testing.T) {

webapp/backend/pkg/web/handler/get_device_details.go

@@ -1,11 +1,12 @@
 package handler
 
 import (
+	"net/http"
+
 	"github.com/analogj/scrutiny/webapp/backend/pkg/database"
 	"github.com/analogj/scrutiny/webapp/backend/pkg/thresholds"
 	"github.com/gin-gonic/gin"
 	"github.com/sirupsen/logrus"
-	"net/http"
 )
 
 func GetDeviceDetails(c *gin.Context) {
@@ -24,7 +25,7 @@ func GetDeviceDetails(c *gin.Context) {
 		durationKey = "forever"
 	}
 
-	smartResults, err := deviceRepo.GetSmartAttributeHistory(c, c.Param("wwn"), durationKey, nil)
+	smartResults, err := deviceRepo.GetSmartAttributeHistory(c, c.Param("wwn"), durationKey, 0, 0, nil)
 	if err != nil {
 		logger.Errorln("An error occurred while retrieving device smart results", err)
 		c.JSON(http.StatusInternalServerError, gin.H{"success": false})

webapp/backend/pkg/web/handler/upload_device_metrics.go

@@ -2,6 +2,8 @@ package handler
 
 import (
 	"fmt"
+	"net/http"
+
 	"github.com/analogj/scrutiny/webapp/backend/pkg"
 	"github.com/analogj/scrutiny/webapp/backend/pkg/config"
 	"github.com/analogj/scrutiny/webapp/backend/pkg/database"
@@ -9,7 +11,6 @@ import (
 	"github.com/analogj/scrutiny/webapp/backend/pkg/notify"
 	"github.com/gin-gonic/gin"
 	"github.com/sirupsen/logrus"
-	"net/http"
 )
 
 func UploadDeviceMetrics(c *gin.Context) {
@@ -69,10 +70,14 @@ func UploadDeviceMetrics(c *gin.Context) {
 
 	//check for error
 	if notify.ShouldNotify(
+		logger,
 		updatedDevice,
 		smartData,
 		pkg.MetricsStatusThreshold(appConfig.GetInt(fmt.Sprintf("%s.metrics.status_threshold", config.DB_USER_SETTINGS_SUBKEY))),
 		pkg.MetricsStatusFilterAttributes(appConfig.GetInt(fmt.Sprintf("%s.metrics.status_filter_attributes", config.DB_USER_SETTINGS_SUBKEY))),
+		appConfig.GetBool(fmt.Sprintf("%s.metrics.repeat_notifications", config.DB_USER_SETTINGS_SUBKEY)),
+		c,
+		deviceRepo,
 	) {
 		//send notifications
 

webapp/backend/pkg/web/server_test.go

@@ -4,6 +4,16 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path"
+	"strings"
+	"testing"
+	"time"
+
 	"github.com/analogj/scrutiny/webapp/backend/pkg"
 	"github.com/analogj/scrutiny/webapp/backend/pkg/config"
 	mock_config "github.com/analogj/scrutiny/webapp/backend/pkg/config/mock"
@@ -14,15 +24,6 @@ import (
 	"github.com/sirupsen/logrus"
 	"github.com/stretchr/testify/require"
 	"github.com/stretchr/testify/suite"
-	"io"
-	"io/ioutil"
-	"net/http"
-	"net/http/httptest"
-	"os"
-	"path"
-	"strings"
-	"testing"
-	"time"
 )
 
 /*
@@ -189,6 +190,7 @@ func (suite *ServerTestSuite) TestUploadDeviceMetricsRoute() {
 	fakeConfig.EXPECT().GetString("web.influxdb.token").Return("my-super-secret-auth-token").AnyTimes()
 	fakeConfig.EXPECT().GetString("web.influxdb.org").Return("scrutiny").AnyTimes()
 	fakeConfig.EXPECT().GetString("web.influxdb.bucket").Return("metrics").AnyTimes()
+	fakeConfig.EXPECT().GetBool("user.metrics.repeat_notifications").Return(true).AnyTimes()
 	fakeConfig.EXPECT().GetBool("web.influxdb.tls.insecure_skip_verify").Return(false).AnyTimes()
 	fakeConfig.EXPECT().GetBool("web.influxdb.retention_policy").Return(false).AnyTimes()
 	if _, isGithubActions := os.LookupEnv("GITHUB_ACTIONS"); isGithubActions {
@@ -247,6 +249,7 @@ func (suite *ServerTestSuite) TestPopulateMultiple() {
 	fakeConfig.EXPECT().GetString("web.influxdb.token").Return("my-super-secret-auth-token").AnyTimes()
 	fakeConfig.EXPECT().GetString("web.influxdb.org").Return("scrutiny").AnyTimes()
 	fakeConfig.EXPECT().GetString("web.influxdb.bucket").Return("metrics").AnyTimes()
+	fakeConfig.EXPECT().GetBool("user.metrics.repeat_notifications").Return(true).AnyTimes()
 	fakeConfig.EXPECT().GetBool("web.influxdb.tls.insecure_skip_verify").Return(false).AnyTimes()
 	fakeConfig.EXPECT().GetBool("web.influxdb.retention_policy").Return(false).AnyTimes()
 	if _, isGithubActions := os.LookupEnv("GITHUB_ACTIONS"); isGithubActions {
@@ -529,6 +532,7 @@ func (suite *ServerTestSuite) TestGetDevicesSummaryRoute_Nvme() {
 	fakeConfig.EXPECT().GetString("web.influxdb.token").Return("my-super-secret-auth-token").AnyTimes()
 	fakeConfig.EXPECT().GetString("web.influxdb.org").Return("scrutiny").AnyTimes()
 	fakeConfig.EXPECT().GetString("web.influxdb.bucket").Return("metrics").AnyTimes()
+	fakeConfig.EXPECT().GetBool("user.metrics.repeat_notifications").Return(true).AnyTimes()
 	fakeConfig.EXPECT().GetBool("web.influxdb.tls.insecure_skip_verify").Return(false).AnyTimes()
 	fakeConfig.EXPECT().GetBool("web.influxdb.retention_policy").Return(false).AnyTimes()
 	fakeConfig.EXPECT().GetStringSlice("notify.urls").AnyTimes().Return([]string{})

webapp/frontend/src/app/core/config/app.config.ts

@@ -55,6 +55,7 @@ export interface AppConfig {
         notify_level?: MetricsNotifyLevel
         status_filter_attributes?: MetricsStatusFilterAttributes
         status_threshold?: MetricsStatusThreshold
+        repeat_notifications?: boolean
     }
 
 }
@@ -82,7 +83,8 @@ export const appConfig: AppConfig = {
     metrics: {
         notify_level: MetricsNotifyLevel.Fail,
         status_filter_attributes: MetricsStatusFilterAttributes.All,
-        status_threshold: MetricsStatusThreshold.Both
+        status_threshold: MetricsStatusThreshold.Both,
+        repeat_notifications: true
     }
 };
 

webapp/frontend/src/app/layout/common/dashboard-settings/dashboard-settings.component.html

@@ -84,6 +84,16 @@
                 </mat-select>
             </mat-form-field>
         </div>
+
+        <div class="flex flex-col mt-5 gt-md:flex-row">
+            <mat-form-field class="flex-auto gt-xs:pr-3 gt-md:pr-3">
+                <mat-label>Repeat Notifications</mat-label>
+                <mat-select [(ngModel)]=repeatNotifications>
+                    <mat-option [value]=true>Always</mat-option>
+                    <mat-option [value]=false>Only when the value has changed</mat-option>
+                </mat-select>
+            </mat-form-field>
+        </div>
     </div>
 
 </mat-dialog-content>

webapp/frontend/src/app/layout/common/dashboard-settings/dashboard-settings.component.ts

@@ -28,6 +28,7 @@ export class DashboardSettingsComponent implements OnInit {
     theme: string;
     statusThreshold: number;
     statusFilterAttributes: number;
+    repeatNotifications: boolean;
 
     // Private
     private _unsubscribeAll: Subject<void>;
@@ -55,6 +56,7 @@ export class DashboardSettingsComponent implements OnInit {
 
                 this.statusFilterAttributes = config.metrics.status_filter_attributes;
                 this.statusThreshold = config.metrics.status_threshold;
+                this.repeatNotifications = config.metrics.repeat_notifications;
 
             });
 
@@ -70,7 +72,8 @@ export class DashboardSettingsComponent implements OnInit {
             theme: this.theme as Theme,
             metrics: {
                 status_filter_attributes: this.statusFilterAttributes as MetricsStatusFilterAttributes,
-                status_threshold: this.statusThreshold as MetricsStatusThreshold
+                status_threshold: this.statusThreshold as MetricsStatusThreshold,
+                repeat_notifications: this.repeatNotifications
             }
         }
         this._configService.config = newSettings