fix(deps): update module github.com/prometheus/prometheus to v0.307.3 (main)

clients/cmd/docker-driver/config.go

@@ -366,6 +366,12 @@ func relabelConfig(config string, lbs model.LabelSet) (model.LabelSet, error) {
 	if err := yaml.UnmarshalStrict([]byte(config), &relabelConfig); err != nil {
 		return nil, err
 	}
+	// Validate relabel configs to set the validation scheme properly
+	for _, rc := range relabelConfig {
+		if err := rc.Validate(model.UTF8Validation); err != nil {
+			return nil, err
+		}
+	}
 	relabed, _ := relabel.Process(labels.FromMap(util.ModelLabelSetToMap(lbs)), relabelConfig...)
 	return model.LabelSet(util.LabelsToMetric(relabed)), nil
 }

clients/pkg/promtail/promtail_test.go

@@ -515,7 +515,7 @@ func getPromMetrics(t *testing.T, httpListenAddr net.Addr) ([]byte, string) {
 func parsePromMetrics(t *testing.T, bytes []byte, contentType string, metricName string, label string) map[string]float64 {
 	rb := map[string]float64{}
 
-	pr, err := textparse.New(bytes, contentType, "", false, false, false, nil)
+	pr, err := textparse.New(bytes, contentType, nil, textparse.ParserOptions{})
 	require.NoError(t, err)
 	for {
 		et, err := pr.Next()

clients/pkg/promtail/targets/azureeventhubs/parser.go

@@ -203,7 +203,21 @@ func (e *messageParser) getLabels(logRecord *azureMonitorResourceLog, relabelCon
 	var processed labels.Labels
 	// apply relabeling
 	if len(relabelConfig) > 0 {
-		processed, _ = relabel.Process(lbs, relabelConfig...)
+		// Validate relabel configs to set the validation scheme properly
+		valid := true
+		for _, rc := range relabelConfig {
+			if err := rc.Validate(model.UTF8Validation); err != nil {
+				// If validation fails, skip relabeling and use original labels
+				valid = false
+				break
+			}
+		}
+		// Only process if all configs were validated successfully
+		if valid {
+			processed, _ = relabel.Process(lbs, relabelConfig...)
+		} else {
+			processed = lbs
+		}
 	} else {
 		processed = lbs
 	}

clients/pkg/promtail/targets/gcplog/formatter.go

@@ -74,7 +74,21 @@ func parseGCPLogsEntry(data []byte, other model.LabelSet, otherInternal labels.L
 
 	// apply relabeling
 	if len(relabelConfig) > 0 {
-		processed, _ = relabel.Process(lbs.Labels(), relabelConfig...)
+		// Validate relabel configs to set the validation scheme properly
+		valid := true
+		for _, rc := range relabelConfig {
+			if err := rc.Validate(model.UTF8Validation); err != nil {
+				// If validation fails, skip relabeling and use original labels
+				valid = false
+				break
+			}
+		}
+		// Only process if all configs were validated successfully
+		if valid {
+			processed, _ = relabel.Process(lbs.Labels(), relabelConfig...)
+		} else {
+			processed = lbs.Labels()
+		}
 	} else {
 		processed = lbs.Labels()
 	}

clients/pkg/promtail/targets/gelf/gelftarget.go

@@ -122,7 +122,26 @@ func (t *Target) handleMessage(msg *gelf.Message) {
 	lb.Set("__gelf_message_version", msg.Version)
 	lb.Set("__gelf_message_facility", msg.Facility)
 
-	processed, _ := relabel.Process(lb.Labels(), t.relabelConfig...)
+	var processed labels.Labels
+	if len(t.relabelConfig) > 0 {
+		// Validate relabel configs to set the validation scheme properly
+		valid := true
+		for _, rc := range t.relabelConfig {
+			if err := rc.Validate(model.UTF8Validation); err != nil {
+				// If validation fails, skip relabeling and use original labels
+				valid = false
+				break
+			}
+		}
+		// Only process if all configs were validated successfully
+		if valid {
+			processed, _ = relabel.Process(lb.Labels(), t.relabelConfig...)
+		} else {
+			processed = lb.Labels()
+		}
+	} else {
+		processed = lb.Labels()
+	}
 
 	filtered := make(model.LabelSet)
 	processed.Range(func(lbl labels.Label) {

clients/pkg/promtail/targets/heroku/target.go

@@ -128,7 +128,26 @@ func (h *Target) drain(w http.ResponseWriter, r *http.Request) {
 			lb.Set(lokiClient.ReservedLabelTenantID, tenantIDHeaderValue)
 		}
 
-		processed, _ := relabel.Process(lb.Labels(), h.relabelConfigs...)
+		var processed labels.Labels
+		if len(h.relabelConfigs) > 0 {
+			// Validate relabel configs to set the validation scheme properly
+			valid := true
+			for _, rc := range h.relabelConfigs {
+				if err := rc.Validate(model.UTF8Validation); err != nil {
+					// If validation fails, skip relabeling and use original labels
+					valid = false
+					break
+				}
+			}
+			// Only process if all configs were validated successfully
+			if valid {
+				processed, _ = relabel.Process(lb.Labels(), h.relabelConfigs...)
+			} else {
+				processed = lb.Labels()
+			}
+		} else {
+			processed = lb.Labels()
+		}
 
 		// Start with the set of labels fixed in the configuration
 		filtered := h.Labels().Clone()

clients/pkg/promtail/targets/kafka/formatter.go

@@ -14,7 +14,26 @@ func format(lbs labels.Labels, cfg []*relabel.Config) model.LabelSet {
 	if lbs.IsEmpty() {
 		return nil
 	}
-	processed, _ := relabel.Process(lbs, cfg...)
+	var processed labels.Labels
+	if len(cfg) > 0 {
+		// Validate relabel configs to set the validation scheme properly
+		valid := true
+		for _, rc := range cfg {
+			if err := rc.Validate(model.UTF8Validation); err != nil {
+				// If validation fails, skip relabeling and use original labels
+				valid = false
+				break
+			}
+		}
+		// Only process if all configs were validated successfully
+		if valid {
+			processed, _ = relabel.Process(lbs, cfg...)
+		} else {
+			processed = lbs
+		}
+	} else {
+		processed = lbs
+	}
 	labelOut := model.LabelSet(util.LabelsToMetric(processed))
 	for k := range labelOut {
 		if strings.HasPrefix(string(k), "__") {

clients/pkg/promtail/targets/syslog/syslogtarget.go

@@ -149,7 +149,26 @@ func (t *SyslogTarget) handleMessageRFC5424(connLabels labels.Labels, msg syslog
 		}
 	}
 
-	processed, _ := relabel.Process(lb.Labels(), t.relabelConfig...)
+	var processed labels.Labels
+	if len(t.relabelConfig) > 0 {
+		// Validate relabel configs to set the validation scheme properly
+		valid := true
+		for _, rc := range t.relabelConfig {
+			if err := rc.Validate(model.UTF8Validation); err != nil {
+				// If validation fails, skip relabeling and use original labels
+				valid = false
+				break
+			}
+		}
+		// Only process if all configs were validated successfully
+		if valid {
+			processed, _ = relabel.Process(lb.Labels(), t.relabelConfig...)
+		} else {
+			processed = lb.Labels()
+		}
+	} else {
+		processed = lb.Labels()
+	}
 
 	filtered := make(model.LabelSet)
 	processed.Range(func(lbl labels.Label) {
@@ -206,7 +225,26 @@ func (t *SyslogTarget) handleMessageRFC3164(connLabels labels.Labels, msg syslog
 		lb.Set("__syslog_message_msg_id", *v)
 	}
 
-	processed, _ := relabel.Process(lb.Labels(), t.relabelConfig...)
+	var processed labels.Labels
+	if len(t.relabelConfig) > 0 {
+		// Validate relabel configs to set the validation scheme properly
+		valid := true
+		for _, rc := range t.relabelConfig {
+			if err := rc.Validate(model.UTF8Validation); err != nil {
+				// If validation fails, skip relabeling and use original labels
+				valid = false
+				break
+			}
+		}
+		// Only process if all configs were validated successfully
+		if valid {
+			processed, _ = relabel.Process(lb.Labels(), t.relabelConfig...)
+		} else {
+			processed = lb.Labels()
+		}
+	} else {
+		processed = lb.Labels()
+	}
 
 	filtered := make(model.LabelSet)
 	processed.Range(func(lbl labels.Label) {

cmd/dataobj-inspect/go.mod

@@ -1,6 +1,6 @@
 module github.com/grafana/loki/cmd/index
 
-go 1.25.0
+go 1.25.3
 
 replace github.com/grafana/loki/v3 => ../..
 
@@ -9,7 +9,7 @@ require (
 	github.com/dustin/go-humanize v1.0.1
 	github.com/fatih/color v1.18.0
 	github.com/grafana/loki/v3 v3.5.8
-	github.com/prometheus/prometheus v0.305.1-0.20250806170547-208187eaa19b
+	github.com/prometheus/prometheus v0.307.3
 )
 
 require (
@@ -30,34 +30,34 @@ require (
 	github.com/golang/snappy v1.0.0 // indirect
 	github.com/google/flatbuffers v25.2.10+incompatible // indirect
 	github.com/google/go-cmp v0.7.0 // indirect
-	github.com/grafana/regexp v0.0.0-20240518133315-a468a5bfb3bc // indirect
+	github.com/grafana/regexp v0.0.0-20250905093917-f7b3be9d1853 // indirect
 	github.com/kamstrup/intmap v0.5.1 // indirect
 	github.com/klauspost/compress v1.18.1 // indirect
 	github.com/klauspost/cpuid/v2 v2.3.0 // indirect
 	github.com/mattn/go-colorable v0.1.14 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
-	github.com/prometheus/client_golang v1.23.0 // indirect
+	github.com/prometheus/client_golang v1.23.2 // indirect
 	github.com/prometheus/client_model v0.6.2 // indirect
-	github.com/prometheus/common v0.65.1-0.20250703115700-7f8b2a0d32d3 // indirect
+	github.com/prometheus/common v0.67.2 // indirect
 	github.com/prometheus/procfs v0.17.0 // indirect
 	github.com/thanos-io/objstore v0.0.0-20250115091151-a54d0f04b42a // indirect
 	github.com/xhit/go-str2duration/v2 v2.1.0 // indirect
 	github.com/zeebo/xxh3 v1.0.2 // indirect
-	go.opentelemetry.io/auto/sdk v1.1.0 // indirect
+	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
 	go.opentelemetry.io/otel v1.38.0 // indirect
 	go.opentelemetry.io/otel/metric v1.38.0 // indirect
 	go.opentelemetry.io/otel/trace v1.38.0 // indirect
 	go.uber.org/atomic v1.11.0 // indirect
-	golang.org/x/exp v0.0.0-20250711185948-6ae5c78190dc // indirect
-	golang.org/x/mod v0.28.0 // indirect
+	go.yaml.in/yaml/v2 v2.4.3 // indirect
+	golang.org/x/exp v0.0.0-20250808145144-a408d31f581a // indirect
+	golang.org/x/mod v0.29.0 // indirect
 	golang.org/x/sync v0.18.0 // indirect
 	golang.org/x/sys v0.38.0 // indirect
-	golang.org/x/telemetry v0.0.0-20250908211612-aef8a434d053 // indirect
+	golang.org/x/telemetry v0.0.0-20251008203120-078029d740a8 // indirect
 	golang.org/x/text v0.30.0 // indirect
-	golang.org/x/tools v0.37.0 // indirect
+	golang.org/x/tools v0.38.0 // indirect
 	golang.org/x/xerrors v0.0.0-20240903120638-7835f813f4da // indirect
 	google.golang.org/protobuf v1.36.10 // indirect
-	gopkg.in/yaml.v2 v2.4.0 // indirect
 )