feat: Add inspect metrics API (#7197)

* feat(inspect): added inspect metric api | 7076

* feat(inspect): added inspect metric api | 7076

* feat(inspect): added inspect metric api | 7076

* feat(inspect): removed underscore label keys

* feat(explorer): updated metadata metrics api| 7076

* feat(explorer): added inspect metrics with resource attribute| 7076

* fix(summary): fixed dashboard name in metric metadata api

* fix(summary): removed offset from second query

* fix(summary): removed offset from second query

* feat(inspect): normalized resource attributes

---------

Co-authored-by: Srikanth Chekuri <srikanth.chekuri92@gmail.com>

pkg/query-service/app/clickhouseReader/reader.go

@@ -70,6 +70,7 @@ const (
 	signozTraceTableName      = "distributed_signoz_index_v2"
 	signozTraceLocalTableName = "signoz_index_v2"
 	signozMetricDBName        = "signoz_metrics"
+	signozMetadataDbName      = "signoz_metadata"
 
 	signozSampleLocalTableName = "samples_v4"
 	signozSampleTableName      = "distributed_samples_v4"
@@ -95,6 +96,8 @@ const (
 	signozTSLocalTableNameV41Week = "time_series_v4_1week"
 	signozTSTableNameV41Week      = "distributed_time_series_v4_1week"
 
+	signozTableAttributesMetadata         = "distributed_attributes_metadata"
+	signozLocalTableAttributesMetadata    = "attributes_metadata"
 	minTimespanForProgressiveSearch       = time.Hour
 	minTimespanForProgressiveSearchMargin = time.Minute
 	maxProgressiveSteps                   = 4
@@ -2031,9 +2034,6 @@ func (r *ClickHouseReader) SetTTLTracesV2(ctx context.Context, params *model.TTL
 	return &model.SetTTLResponseItem{Message: "move ttl has been successfully set up"}, nil
 }
 
-// SetTTL sets the TTL for traces or metrics or logs tables.
-// This is an async API which creates goroutines to set TTL.
-// Status of TTL update is tracked with ttl_status table in sqlite db.
 // SetTTL sets the TTL for traces or metrics or logs tables.
 // This is an async API which creates goroutines to set TTL.
 // Status of TTL update is tracked with ttl_status table in sqlite db.
@@ -5691,7 +5691,8 @@ func (r *ClickHouseReader) GetAllMetricFilterAttributeKeys(ctx context.Context,
 	if req.Limit != 0 {
 		query = query + fmt.Sprintf(" LIMIT %d;", req.Limit)
 	}
-	rows, err := r.db.Query(ctx, query, common.PastDayRoundOff(), fmt.Sprintf("%%%s%%", req.SearchText))
+	valueCtx := context.WithValue(ctx, "clickhouse_max_threads", constants.MetricsExplorerClickhouseThreads)
+	rows, err := r.db.Query(valueCtx, query, common.PastDayRoundOff(), fmt.Sprintf("%%%s%%", req.SearchText)) //only showing past day data
 	if err != nil {
 		zap.L().Error("Error while executing query", zap.Error(err))
 		return nil, &model.ApiError{Typ: "ClickHouseError", Err: err}
@@ -5713,6 +5714,9 @@ func (r *ClickHouseReader) GetAllMetricFilterAttributeKeys(ctx context.Context,
 		}
 		response = append(response, key)
 	}
+	if err := rows.Err(); err != nil {
+		return nil, &model.ApiError{Typ: "ClickHouseError", Err: err}
+	}
 	return &response, nil
 }
 
@@ -5726,7 +5730,8 @@ func (r *ClickHouseReader) GetAllMetricFilterAttributeValues(ctx context.Context
 	if req.Limit != 0 {
 		query = query + fmt.Sprintf(" LIMIT %d;", req.Limit)
 	}
-	rows, err = r.db.Query(ctx, query, req.FilterKey, req.FilterKey, fmt.Sprintf("%%%s%%", req.SearchText), common.PastDayRoundOff())
+	valueCtx := context.WithValue(ctx, "clickhouse_max_threads", constants.MetricsExplorerClickhouseThreads)
+	rows, err = r.db.Query(valueCtx, query, req.FilterKey, req.FilterKey, fmt.Sprintf("%%%s%%", req.SearchText), common.PastDayRoundOff()) //only showing past day data
 
 	if err != nil {
 		zap.L().Error("Error while executing query", zap.Error(err))
@@ -5741,6 +5746,9 @@ func (r *ClickHouseReader) GetAllMetricFilterAttributeValues(ctx context.Context
 		}
 		attributeValues = append(attributeValues, atrributeValue)
 	}
+	if err := rows.Err(); err != nil {
+		return nil, &model.ApiError{Typ: "ClickHouseError", Err: err}
+	}
 	return attributeValues, nil
 }
 
@@ -5752,7 +5760,8 @@ func (r *ClickHouseReader) GetAllMetricFilterUnits(ctx context.Context, req *met
 		query = query + fmt.Sprintf(" LIMIT %d;", req.Limit)
 	}
 
-	rows, err := r.db.Query(ctx, query, fmt.Sprintf("%%%s%%", req.SearchText))
+	valueCtx := context.WithValue(ctx, "clickhouse_max_threads", constants.MetricsExplorerClickhouseThreads)
+	rows, err := r.db.Query(valueCtx, query, fmt.Sprintf("%%%s%%", req.SearchText))
 	if err != nil {
 		zap.L().Error("Error while executing query", zap.Error(err))
 		return nil, &model.ApiError{Typ: "ClickHouseError", Err: err}
@@ -5765,6 +5774,9 @@ func (r *ClickHouseReader) GetAllMetricFilterUnits(ctx context.Context, req *met
 		}
 		response = append(response, attributeKey)
 	}
+	if err := rows.Err(); err != nil {
+		return nil, &model.ApiError{Typ: "ClickHouseError", Err: err}
+	}
 	return response, nil
 }
 func (r *ClickHouseReader) GetAllMetricFilterTypes(ctx context.Context, req *metrics_explorer.FilterValueRequest) ([]string, *model.ApiError) {
@@ -5774,8 +5786,8 @@ func (r *ClickHouseReader) GetAllMetricFilterTypes(ctx context.Context, req *met
 	if req.Limit != 0 {
 		query = query + fmt.Sprintf(" LIMIT %d;", req.Limit)
 	}
-
+	valueCtx := context.WithValue(ctx, "clickhouse_max_threads", constants.MetricsExplorerClickhouseThreads)
-	rows, err := r.db.Query(ctx, query, fmt.Sprintf("%%%s%%", req.SearchText))
+	rows, err := r.db.Query(valueCtx, query, fmt.Sprintf("%%%s%%", req.SearchText))
 	if err != nil {
 		zap.L().Error("Error while executing query", zap.Error(err))
 		return nil, &model.ApiError{Typ: "ClickHouseError", Err: err}
@@ -5788,6 +5800,9 @@ func (r *ClickHouseReader) GetAllMetricFilterTypes(ctx context.Context, req *met
 		}
 		response = append(response, attributeKey)
 	}
+	if err := rows.Err(); err != nil {
+		return nil, &model.ApiError{Typ: "ClickHouseError", Err: err}
+	}
 	return response, nil
 }
 
@@ -5798,7 +5813,8 @@ FROM %s.%s
 WHERE metric_name = ?
 `, signozMetricDBName, constants.SIGNOZ_SAMPLES_V4_AGG_30M_TABLENAME)
 	var dataPoints uint64
-	err := r.db.QueryRow(ctx, query, metricName).Scan(&dataPoints)
+	valueCtx := context.WithValue(ctx, "clickhouse_max_threads", constants.MetricsExplorerClickhouseThreads)
+	err := r.db.QueryRow(valueCtx, query, metricName).Scan(&dataPoints)
 	if err != nil {
 		return 0, &model.ApiError{Typ: "ClickHouseError", Err: err}
 	}
@@ -5812,7 +5828,8 @@ FROM %s.%s
 WHERE metric_name = ?
 `, signozMetricDBName, signozSampleTableName)
 	var lastReceived int64
-	err := r.db.QueryRow(ctx, query, metricName).Scan(&lastReceived)
+	valueCtx := context.WithValue(ctx, "clickhouse_max_threads", constants.MetricsExplorerClickhouseThreads)
+	err := r.db.QueryRow(valueCtx, query, metricName).Scan(&lastReceived)
 	if err != nil {
 		return 0, &model.ApiError{Typ: "ClickHouseError", Err: err}
 	}
@@ -5825,52 +5842,60 @@ func (r *ClickHouseReader) GetTotalTimeSeriesForMetricName(ctx context.Context,
 FROM %s.%s
 WHERE metric_name = ?;`, signozMetricDBName, signozTSTableNameV41Week)
 	var timeSeriesCount uint64
-	err := r.db.QueryRow(ctx, query, metricName).Scan(&timeSeriesCount)
+	valueCtx := context.WithValue(ctx, "clickhouse_max_threads", constants.MetricsExplorerClickhouseThreads)
+	err := r.db.QueryRow(valueCtx, query, metricName).Scan(&timeSeriesCount)
 	if err != nil {
 		return 0, &model.ApiError{Typ: "ClickHouseError", Err: err}
 	}
 	return timeSeriesCount, nil
 }
 
-func (r *ClickHouseReader) GetAttributesForMetricName(ctx context.Context, metricName string) (*[]metrics_explorer.Attribute, *model.ApiError) {
+func (r *ClickHouseReader) GetAttributesForMetricName(ctx context.Context, metricName string, start, end *int64) (*[]metrics_explorer.Attribute, *model.ApiError) {
-	query := fmt.Sprintf(`
+	const baseQueryTemplate = `
 SELECT 
     kv.1 AS key,
-    arrayMap(x -> trim(BOTH '\"' FROM x), groupUniqArray(10000)(kv.2)) AS values,
+    arrayMap(x -> trim(BOTH '"' FROM x), groupUniqArray(10000)(kv.2)) AS values,
     length(groupUniqArray(10000)(kv.2)) AS valueCount
 FROM %s.%s
 ARRAY JOIN arrayFilter(x -> NOT startsWith(x.1, '__'), JSONExtractKeysAndValuesRaw(labels)) AS kv
-WHERE metric_name = ?
+WHERE metric_name = ?`
-GROUP BY kv.1
-ORDER BY valueCount DESC;
-    `, signozMetricDBName, signozTSTableNameV41Week)
 
-	rows, err := r.db.Query(ctx, query, metricName)
+	var args []interface{}
+	args = append(args, metricName)
+	tableName := signozTSTableNameV41Week
+
+	if start != nil && end != nil {
+		st, en, tsTable, _ := utils.WhichTSTableToUse(*start, *end)
+		*start, *end, tableName = st, en, tsTable
+		args = append(args, *start, *end)
+	} else if start == nil && end == nil {
+		tableName = signozTSTableNameV41Week
+	}
+
+	query := fmt.Sprintf(baseQueryTemplate, signozMetricDBName, tableName)
+
+	if start != nil && end != nil {
+		query += " AND unix_milli BETWEEN ? AND ?"
+	}
+
+	query += "\nGROUP BY kv.1\nORDER BY valueCount DESC;"
+
+	valueCtx := context.WithValue(ctx, "clickhouse_max_threads", constants.MetricsExplorerClickhouseThreads)
+	rows, err := r.db.Query(valueCtx, query, args...)
 	if err != nil {
 		return nil, &model.ApiError{Typ: "ClickHouseError", Err: err}
 	}
-	defer rows.Close() // Ensure the rows are closed
+	defer rows.Close()
 
 	var attributesList []metrics_explorer.Attribute
 	for rows.Next() {
-		var key string
+		var attr metrics_explorer.Attribute
-		var values []string
+		if err := rows.Scan(&attr.Key, &attr.Value, &attr.ValueCount); err != nil {
-		var valueCount uint64
-
-		// Manually scan each value into its corresponding variable
-		if err := rows.Scan(&key, &values, &valueCount); err != nil {
 			return nil, &model.ApiError{Typ: "ClickHouseError", Err: err}
 		}
-
+		attributesList = append(attributesList, attr)
-		// Append the scanned values into the struct
-		attributesList = append(attributesList, metrics_explorer.Attribute{
-			Key:        key,
-			Value:      values,
-			ValueCount: valueCount,
-		})
 	}
 
-	// Handle any errors encountered while scanning rows
 	if err := rows.Err(); err != nil {
 		return nil, &model.ApiError{Typ: "ClickHouseError", Err: err}
 	}
@@ -5883,7 +5908,8 @@ func (r *ClickHouseReader) GetActiveTimeSeriesForMetricName(ctx context.Context,
 	query := fmt.Sprintf("SELECT uniq(fingerprint) FROM %s.%s WHERE metric_name = '%s' and unix_milli >= ?", signozMetricDBName, signozTSTableNameV4, metricName)
 	var timeSeries uint64
 	// Using QueryRow instead of Select since we're only expecting a single value
-	err := r.db.QueryRow(ctx, query, milli).Scan(&timeSeries)
+	valueCtx := context.WithValue(ctx, "clickhouse_max_threads", constants.MetricsExplorerClickhouseThreads)
+	err := r.db.QueryRow(valueCtx, query, milli).Scan(&timeSeries)
 	if err != nil {
 		return 0, &model.ApiError{Typ: "ClickHouseError", Err: err}
 	}
@@ -6009,7 +6035,7 @@ func (r *ClickHouseReader) ListSummaryMetrics(ctx context.Context, req *metrics_
 		sb.WriteString(orderByClauseFirstQuery)
 	}
 
-	sb.WriteString(fmt.Sprintf(" LIMIT %d OFFSET %d;", req.Limit, req.Offset))
+	sb.WriteString(fmt.Sprintf(" LIMIT %d;", req.Limit))
 
 	sampleQuery := sb.String()
 
@@ -6455,6 +6481,10 @@ func (r *ClickHouseReader) GetAttributeSimilarity(ctx context.Context, req *metr
 		}
 	}
 
+	if err := rows.Err(); err != nil {
+		return nil, &model.ApiError{Typ: "ClickHouseError", Err: err}
+	}
+
 	// Normalize the attribute similarity scores
 	normalizeMap := utils.NormalizeMap(attributeMap)
 	for metric := range result {
@@ -6467,3 +6497,199 @@ func (r *ClickHouseReader) GetAttributeSimilarity(ctx context.Context, req *metr
 
 	return result, nil
 }
+
+func (r *ClickHouseReader) GetMetricsAllResourceAttributes(ctx context.Context, start int64, end int64) (map[string]uint64, *model.ApiError) {
+	start, end, attTable, _ := utils.WhichAttributesTableToUse(start, end)
+	query := fmt.Sprintf(`SELECT 
+    key, 
+    count(distinct value) AS distinct_value_count
+FROM (
+    SELECT key, value
+    FROM %s.%s
+    ARRAY JOIN 
+        arrayConcat(mapKeys(resource_attributes)) AS key,
+        arrayConcat(mapValues(resource_attributes)) AS value
+    WHERE unix_milli between ? and ?
+) 
+GROUP BY key
+ORDER BY distinct_value_count DESC;`, signozMetadataDbName, attTable)
+	valueCtx := context.WithValue(ctx, "clickhouse_max_threads", constants.MetricsExplorerClickhouseThreads)
+	rows, err := r.db.Query(valueCtx, query, start, end)
+	if err != nil {
+		return nil, &model.ApiError{Typ: "ClickHouseError", Err: err}
+	}
+	attributes := make(map[string]uint64)
+	for rows.Next() {
+		var attrs string
+		var uniqCount uint64
+
+		if err := rows.Scan(&attrs, &uniqCount); err != nil {
+			return nil, &model.ApiError{Typ: "ClickHouseError", Err: err}
+		}
+		attributes[attrs] = uniqCount
+	}
+	if err := rows.Err(); err != nil {
+		return nil, &model.ApiError{Typ: "ClickHouseError", Err: err}
+	}
+	return attributes, nil
+}
+
+func (r *ClickHouseReader) GetInspectMetrics(ctx context.Context, req *metrics_explorer.InspectMetricsRequest, fingerprints []string) (*metrics_explorer.InspectMetricsResponse, *model.ApiError) {
+	start, end, _, localTsTable := utils.WhichTSTableToUse(req.Start, req.End)
+	fingerprintsString := strings.Join(fingerprints, ",")
+	query := fmt.Sprintf(`SELECT
+                fingerprint,
+                labels,
+                unix_milli,
+                value as per_series_value
+        FROM
+                signoz_metrics.distributed_samples_v4
+        INNER JOIN (
+                SELECT DISTINCT
+                        fingerprint,
+                        labels
+                FROM
+                        %s.%s
+                WHERE
+                        fingerprint in (%s)
+                        AND unix_milli >= ?
+                        AND unix_milli < ?) as filtered_time_series
+                USING fingerprint
+        WHERE
+                metric_name  = ?
+                AND unix_milli >= ?
+                AND unix_milli < ?
+                ORDER BY fingerprint DESC, unix_milli DESC`, signozMetricDBName, localTsTable, fingerprintsString)
+	valueCtx := context.WithValue(ctx, "clickhouse_max_threads", constants.MetricsExplorerClickhouseThreads)
+	rows, err := r.db.Query(valueCtx, query, start, end, req.MetricName, start, end)
+	if err != nil {
+		return nil, &model.ApiError{Typ: "ClickHouseError", Err: err}
+	}
+	defer rows.Close()
+
+	seriesMap := make(map[uint64]*v3.Series)
+
+	for rows.Next() {
+		var fingerprint uint64
+		var labelsJSON string
+		var unixMilli int64
+		var perSeriesValue float64
+
+		if err := rows.Scan(&fingerprint, &labelsJSON, &unixMilli, &perSeriesValue); err != nil {
+			return nil, &model.ApiError{Typ: "ClickHouseError", Err: err}
+		}
+
+		var labelsMap map[string]string
+		if err := json.Unmarshal([]byte(labelsJSON), &labelsMap); err != nil {
+			return nil, &model.ApiError{Typ: "JsonUnmarshalError", Err: err}
+		}
+
+		// Filter out keys starting with "__"
+		filteredLabelsMap := make(map[string]string)
+		for k, v := range labelsMap {
+			if !strings.HasPrefix(k, "__") {
+				filteredLabelsMap[k] = v
+			}
+		}
+
+		var labelsArray []map[string]string
+		for k, v := range filteredLabelsMap {
+			labelsArray = append(labelsArray, map[string]string{k: v})
+		}
+
+		// Check if we already have a Series for this fingerprint.
+		series, exists := seriesMap[fingerprint]
+		if !exists {
+			series = &v3.Series{
+				Labels:      filteredLabelsMap,
+				LabelsArray: labelsArray,
+				Points:      []v3.Point{},
+			}
+			seriesMap[fingerprint] = series
+		}
+
+		series.Points = append(series.Points, v3.Point{
+			Timestamp: unixMilli,
+			Value:     perSeriesValue,
+		})
+	}
+
+	if err = rows.Err(); err != nil {
+		return nil, &model.ApiError{Typ: "ClickHouseError", Err: err}
+	}
+
+	var seriesList []v3.Series
+	for _, s := range seriesMap {
+		seriesList = append(seriesList, *s)
+	}
+
+	return &metrics_explorer.InspectMetricsResponse{
+		Series: &seriesList,
+	}, nil
+}
+
+func (r *ClickHouseReader) GetInspectMetricsFingerprints(ctx context.Context, attributes []string, req *metrics_explorer.InspectMetricsRequest) ([]string, *model.ApiError) {
+	// Build dynamic key selections and JSON extracts
+	var jsonExtracts []string
+	var groupBys []string
+
+	for i, attr := range attributes {
+		keyAlias := fmt.Sprintf("key%d", i+1)
+		jsonExtracts = append(jsonExtracts, fmt.Sprintf("JSONExtractString(labels, '%s') AS %s", attr, keyAlias))
+		groupBys = append(groupBys, keyAlias)
+	}
+	start, end, tsTable, _ := utils.WhichTSTableToUse(req.Start, req.End)
+	query := fmt.Sprintf(`
+        SELECT 
+    arrayDistinct(groupArray(toString(fingerprint))) AS fingerprints
+FROM
+(
+    SELECT 
+        metric_name, labels, fingerprint,
+        %s
+    FROM %s.%s
+    WHERE metric_name = ?
+      AND unix_milli BETWEEN ? AND ?
+)
+GROUP BY %s
+ORDER BY length(fingerprints) DESC, rand()
+LIMIT 40`, // added rand to get diff value every time we run this query
+		strings.Join(jsonExtracts, ", "),
+		signozMetricDBName, tsTable,
+		strings.Join(groupBys, ", "))
+	valueCtx := context.WithValue(ctx, "clickhouse_max_threads", constants.MetricsExplorerClickhouseThreads)
+	rows, err := r.db.Query(valueCtx, query,
+		req.MetricName,
+		start,
+		end,
+	)
+	if err != nil {
+		return nil, &model.ApiError{Typ: model.ErrorExec, Err: err}
+	}
+	defer rows.Close()
+
+	var fingerprints []string
+	for rows.Next() {
+		// Create dynamic scanning based on number of attributes
+		var fingerprintsList []string
+
+		if err := rows.Scan(&fingerprintsList); err != nil {
+			return nil, &model.ApiError{Typ: model.ErrorExec, Err: err}
+		}
+
+		if len(fingerprints) == 0 || len(fingerprints)+len(fingerprintsList) < 40 {
+			fingerprints = append(fingerprints, fingerprintsList...)
+		}
+
+		if len(fingerprints) > 40 {
+			break
+		}
+
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, &model.ApiError{Typ: model.ErrorExec, Err: err}
+	}
+
+	return fingerprints, nil
+}

pkg/query-service/app/dashboards/model.go

@@ -518,10 +518,10 @@ func GetDashboardsWithMetricNames(ctx context.Context, orgID string, metricNames
 					for _, metricName := range metricNames {
 						if strings.TrimSpace(key) == metricName {
 							result[metricName] = append(result[metricName], map[string]string{
-								"dashboard_id":    dashboard.UUID,
+								"dashboard_id":   dashboard.UUID,
-								"widget_title":    widgetTitle,
+								"widget_name":    widgetTitle,
-								"widget_id":       widgetID,
+								"widget_id":      widgetID,
-								"dashboard_title": dashTitle,
+								"dashboard_name": dashTitle,
 							})
 						}
 					}

pkg/query-service/app/http_handler.go

@@ -636,6 +636,9 @@ func (ah *APIHandler) MetricExplorerRoutes(router *mux.Router, am *AuthMiddlewar
 	router.HandleFunc("/api/v1/metrics/related",
 		am.ViewAccess(ah.GetRelatedMetrics)).
 		Methods(http.MethodPost)
+	router.HandleFunc("/api/v1/metrics/inspect",
+		am.ViewAccess(ah.GetInspectMetricsData)).
+		Methods(http.MethodPost)
 }
 
 func Intersection(a, b []int) (c []int) {

pkg/query-service/app/metricsexplorer/parser.go

@@ -76,3 +76,14 @@ func ParseRelatedMetricsParams(r *http.Request) (*metrics_explorer.RelatedMetric
 	}
 	return &relatedMetricParams, nil
 }
+
+func ParseInspectMetricsParams(r *http.Request) (*metrics_explorer.InspectMetricsRequest, *model.ApiError) {
+	var inspectMetricParams metrics_explorer.InspectMetricsRequest
+	if err := json.NewDecoder(r.Body).Decode(&inspectMetricParams); err != nil {
+		return nil, &model.ApiError{Typ: model.ErrorBadData, Err: fmt.Errorf("cannot parse the request body: %v", err)}
+	}
+	if inspectMetricParams.End-inspectMetricParams.Start > 1800000 { // half hour only
+		return nil, &model.ApiError{Typ: model.ErrorBadData, Err: fmt.Errorf("time duration shouldn't be more than 30 mins")}
+	}
+	return &inspectMetricParams, nil
+}

pkg/query-service/app/metricsexplorer/summary.go

@@ -5,6 +5,7 @@ import (
 	"encoding/json"
 	"errors"
 	"sort"
+	"strings"
 	"time"
 
 	"go.uber.org/zap"
@@ -143,7 +144,7 @@ func (receiver *SummaryService) GetMetricsSummary(ctx context.Context, metricNam
 	})
 
 	g.Go(func() error {
-		attributes, err := receiver.reader.GetAttributesForMetricName(ctx, metricName)
+		attributes, err := receiver.reader.GetAttributesForMetricName(ctx, metricName, nil, nil)
 		if err != nil {
 			return err
 		}
@@ -171,13 +172,15 @@ func (receiver *SummaryService) GetMetricsSummary(ctx context.Context, metricNam
 				return &model.ApiError{Typ: "MarshallingErr", Err: err}
 			}
 
-			var dashboards []metrics_explorer.Dashboard
+			var dashboards map[string][]metrics_explorer.Dashboard
 			err = json.Unmarshal(jsonData, &dashboards)
 			if err != nil {
 				zap.L().Error("Error unmarshalling data:", zap.Error(err))
 				return &model.ApiError{Typ: "UnMarshallingErr", Err: err}
 			}
-			metricDetailsDTO.Dashboards = dashboards
+			if _, ok := dashboards[metricName]; ok {
+				metricDetailsDTO.Dashboards = dashboards[metricName]
+			}
 		}
 		return nil
 	})
@@ -456,3 +459,85 @@ func getQueryRangeForRelateMetricsList(metricName string, scores metrics_explore
 
 	return &query
 }
+
+func (receiver *SummaryService) GetInspectMetrics(ctx context.Context, params *metrics_explorer.InspectMetricsRequest) (*metrics_explorer.InspectMetricsResponse, *model.ApiError) {
+	// Capture the original context.
+	parentCtx := ctx
+
+	// Create an errgroup using the original context.
+	g, egCtx := errgroup.WithContext(ctx)
+
+	var attributes []metrics_explorer.Attribute
+	var resourceAttrs map[string]uint64
+
+	// Run the two queries concurrently using the derived context.
+	g.Go(func() error {
+		attrs, apiErr := receiver.reader.GetAttributesForMetricName(egCtx, params.MetricName, &params.Start, &params.End)
+		if apiErr != nil {
+			return apiErr
+		}
+		if attrs != nil {
+			attributes = *attrs
+		}
+		return nil
+	})
+
+	g.Go(func() error {
+		resAttrs, apiErr := receiver.reader.GetMetricsAllResourceAttributes(egCtx, params.Start, params.End)
+		if apiErr != nil {
+			return apiErr
+		}
+		if resAttrs != nil {
+			resourceAttrs = resAttrs
+		}
+		return nil
+	})
+
+	// Wait for the concurrent operations to complete.
+	if err := g.Wait(); err != nil {
+		return nil, &model.ApiError{Typ: "InternalError", Err: err}
+	}
+
+	// Use the parentCtx (or create a new context from it) for the rest of the calls.
+	if parentCtx.Err() != nil {
+		return nil, &model.ApiError{Typ: "ContextCanceled", Err: parentCtx.Err()}
+	}
+
+	// Build a set of attribute keys for O(1) lookup.
+	attributeKeys := make(map[string]struct{})
+	for _, attr := range attributes {
+		attributeKeys[attr.Key] = struct{}{}
+	}
+
+	// Filter resource attributes that are present in attributes.
+	var validAttrs []string
+	for attrName := range resourceAttrs {
+		normalizedAttrName := strings.ReplaceAll(attrName, ".", "_")
+		if _, ok := attributeKeys[normalizedAttrName]; ok {
+			validAttrs = append(validAttrs, normalizedAttrName)
+		}
+	}
+
+	// Get top 3 resource attributes (or use top attributes by valueCount if none match).
+	if len(validAttrs) > 3 {
+		validAttrs = validAttrs[:3]
+	} else if len(validAttrs) == 0 {
+		sort.Slice(attributes, func(i, j int) bool {
+			return attributes[i].ValueCount > attributes[j].ValueCount
+		})
+		for i := 0; i < len(attributes) && i < 3; i++ {
+			validAttrs = append(validAttrs, attributes[i].Key)
+		}
+	}
+	fingerprints, apiError := receiver.reader.GetInspectMetricsFingerprints(parentCtx, validAttrs, params)
+	if apiError != nil {
+		return nil, apiError
+	}
+
+	baseResponse, apiErr := receiver.reader.GetInspectMetrics(parentCtx, params, fingerprints)
+	if apiErr != nil {
+		return nil, apiErr
+	}
+
+	return baseResponse, nil
+}

pkg/query-service/app/summary.go

@@ -122,3 +122,23 @@ func (aH *APIHandler) GetRelatedMetrics(w http.ResponseWriter, r *http.Request)
 	aH.Respond(w, result)
 
 }
+
+func (aH *APIHandler) GetInspectMetricsData(w http.ResponseWriter, r *http.Request) {
+	bodyBytes, _ := io.ReadAll(r.Body)
+	r.Body = io.NopCloser(bytes.NewBuffer(bodyBytes))
+	ctx := r.Context()
+	params, apiError := explorer.ParseInspectMetricsParams(r)
+	if apiError != nil {
+		zap.L().Error("error parsing metric query range params", zap.Error(apiError.Err))
+		RespondError(w, apiError, nil)
+		return
+	}
+	result, apiError := aH.SummaryService.GetInspectMetrics(ctx, params)
+	if apiError != nil {
+		zap.L().Error("error getting inspect metrics data", zap.Error(apiError.Err))
+		RespondError(w, apiError, nil)
+		return
+	}
+	aH.Respond(w, result)
+
+}

pkg/query-service/constants/constants.go

@@ -226,6 +226,8 @@ const (
 	SIGNOZ_TIMESERIES_v4_TABLENAME             = "distributed_time_series_v4"
 	SIGNOZ_TIMESERIES_v4_1WEEK_TABLENAME       = "distributed_time_series_v4_1week"
 	SIGNOZ_TIMESERIES_v4_6HRS_TABLENAME        = "distributed_time_series_v4_6hrs"
+	SIGNOZ_ATTRIBUTES_METADATA_TABLENAME       = "distributed_attributes_metadata"
+	SIGNOZ_ATTRIBUTES_METADATA_LOCAL_TABLENAME = "attributes_metadata"
 )
 
 // alert related constants

pkg/query-service/interfaces/interface.go

@@ -126,7 +126,7 @@ type Reader interface {
 	GetMetricsLastReceived(ctx context.Context, metricName string) (int64, *model.ApiError)
 	GetTotalTimeSeriesForMetricName(ctx context.Context, metricName string) (uint64, *model.ApiError)
 	GetActiveTimeSeriesForMetricName(ctx context.Context, metricName string, duration time.Duration) (uint64, *model.ApiError)
-	GetAttributesForMetricName(ctx context.Context, metricName string) (*[]metrics_explorer.Attribute, *model.ApiError)
+	GetAttributesForMetricName(ctx context.Context, metricName string, start, end *int64) (*[]metrics_explorer.Attribute, *model.ApiError)
 
 	ListSummaryMetrics(ctx context.Context, req *metrics_explorer.SummaryListMetricsRequest) (*metrics_explorer.SummaryListMetricsResponse, *model.ApiError)
 
@@ -135,6 +135,10 @@ type Reader interface {
 
 	GetNameSimilarity(ctx context.Context, req *metrics_explorer.RelatedMetricsRequest) (map[string]metrics_explorer.RelatedMetricsScore, *model.ApiError)
 	GetAttributeSimilarity(ctx context.Context, req *metrics_explorer.RelatedMetricsRequest) (map[string]metrics_explorer.RelatedMetricsScore, *model.ApiError)
+
+	GetMetricsAllResourceAttributes(ctx context.Context, start int64, end int64) (map[string]uint64, *model.ApiError)
+	GetInspectMetricsFingerprints(ctx context.Context, attributes []string, req *metrics_explorer.InspectMetricsRequest) ([]string, *model.ApiError)
+	GetInspectMetrics(ctx context.Context, req *metrics_explorer.InspectMetricsRequest, fingerprints []string) (*metrics_explorer.InspectMetricsResponse, *model.ApiError)
 }
 
 type Querier interface {

pkg/query-service/model/metrics_explorer/summary.go

@@ -149,3 +149,14 @@ type RelatedMetrics struct {
 	Dashboards []Dashboard      `json:"dashboards"`
 	Alerts     []Alert          `json:"alerts"`
 }
+
+type InspectMetricsRequest struct {
+	MetricName string       `json:"metricName"`
+	Filters    v3.FilterSet `json:"filters"`
+	Start      int64        `json:"start"`
+	End        int64        `json:"end"`
+}
+
+type InspectMetricsResponse struct {
+	Series *[]v3.Series `json:"series,omitempty"`
+}

pkg/query-service/utils/filter_conditions.go

@@ -151,3 +151,10 @@ func WhichSampleTableToUse(start, end int64) (string, string) {
 		return constants.SIGNOZ_SAMPLES_V4_AGG_30M_TABLENAME, "sum(count)"
 	}
 }
+
+func WhichAttributesTableToUse(start, end int64) (int64, int64, string, string) {
+	if end-start < sixHoursInMilliseconds {
+		start = start - (start % (time.Hour.Milliseconds() * 6))
+	}
+	return start, end, constants.SIGNOZ_ATTRIBUTES_METADATA_TABLENAME, constants.SIGNOZ_ATTRIBUTES_METADATA_LOCAL_TABLENAME
+}