[metrics][storage] Move metrics reader decorator to metrics storage factory (#6287)

## Which problem is this PR solving?
- Towards #6219 

## Description of the changes
- This PR moves the decoration of the metrics readers with the metrics
factory to inside the storage factory itself rather than handling it a
higher level (ex. all-in-one, query server/extension)
- For v2, the namespacing of the metrics has been moved from the query
extension to the storage extension.
- For v1, the namespacing of the metrics has been moved from the various
binaries to the metrics storage meta-factory.
- 🛑 This PR contains the following breaking changes:
- In v1, metrics related to the metrics reader that were being published
under `jaeger_query` will now be published under `jaeger_storage` with
the `kind` and `role=metricstore` tags.
- In v2, metrics related to the metrics reader that were being published
under `jaeger_metricstore` will now be published under `jaeger_storage`
with the `name`, `kind`, and `role=metricstore` tags.

## How was this change tested?
- CI

## Checklist
- [x] I have read
https://github.com/jaegertracing/jaeger/blob/master/CONTRIBUTING_GUIDELINES.md
- [x] I have signed all commits
- [x] I have added unit tests for the new functionality
- [x] I have run lint and test steps successfully
  - for `jaeger`: `make lint test`
  - for `jaeger-ui`: `yarn lint` and `yarn test`

---------

Signed-off-by: Mahad Zaryab <[email protected]>

Author: mahadzaryab1

cmd/all-in-one/main.go

@@ -39,7 +39,6 @@ import (
 	"github.com/jaegertracing/jaeger/plugin/storage"
 	"github.com/jaegertracing/jaeger/ports"
 	"github.com/jaegertracing/jaeger/storage/dependencystore"
-	"github.com/jaegertracing/jaeger/storage/metricsstore/metricstoremetrics"
 	"github.com/jaegertracing/jaeger/storage/spanstore"
 )
 
@@ -118,7 +117,7 @@ by default uses only in-memory database.`,
 				logger.Fatal("Failed to create dependency reader", zap.Error(err))
 			}
 
-			metricsQueryService, err := createMetricsQueryService(metricsReaderFactory, v, logger, queryMetricsFactory)
+			metricsQueryService, err := createMetricsQueryService(metricsReaderFactory, v, baseTelset)
 			if err != nil {
 				logger.Fatal("Failed to create metrics reader", zap.Error(err))
 			}
@@ -238,20 +237,18 @@ func startQuery(
 func createMetricsQueryService(
 	metricsReaderFactory *metricsPlugin.Factory,
 	v *viper.Viper,
-	logger *zap.Logger,
-	metricsReaderMetricsFactory metrics.Factory,
+	telset telemetry.Settings,
 ) (querysvc.MetricsQueryService, error) {
-	if err := metricsReaderFactory.Initialize(logger); err != nil {
+	if err := metricsReaderFactory.Initialize(telset); err != nil {
 		return nil, fmt.Errorf("failed to init metrics reader factory: %w", err)
 	}
 
 	// Ensure default parameter values are loaded correctly.
-	metricsReaderFactory.InitFromViper(v, logger)
+	metricsReaderFactory.InitFromViper(v, telset.Logger)
 	reader, err := metricsReaderFactory.CreateMetricsReader()
 	if err != nil {
 		return nil, fmt.Errorf("failed to create metrics reader: %w", err)
 	}
 
-	// Decorate the metrics reader with metrics instrumentation.
-	return metricstoremetrics.NewReaderDecorator(reader, metricsReaderMetricsFactory), nil
+	return reader, nil
 }

cmd/jaeger/internal/extension/jaegerquery/server.go

@@ -15,14 +15,12 @@ import (
 	"github.com/jaegertracing/jaeger/cmd/jaeger/internal/extension/jaegerstorage"
 	queryApp "github.com/jaegertracing/jaeger/cmd/query/app"
 	"github.com/jaegertracing/jaeger/cmd/query/app/querysvc"
-	"github.com/jaegertracing/jaeger/internal/metrics/otelmetrics"
 	"github.com/jaegertracing/jaeger/pkg/jtracer"
 	"github.com/jaegertracing/jaeger/pkg/metrics"
 	"github.com/jaegertracing/jaeger/pkg/telemetry"
 	"github.com/jaegertracing/jaeger/pkg/tenancy"
 	"github.com/jaegertracing/jaeger/plugin/metrics/disabled"
 	"github.com/jaegertracing/jaeger/storage/metricsstore"
-	"github.com/jaegertracing/jaeger/storage/metricsstore/metricstoremetrics"
 )
 
 var (
@@ -156,10 +154,7 @@ func (s *server) createMetricReader(host component.Host) (metricsstore.Reader, e
 		return nil, fmt.Errorf("cannot create metrics reader %w", err)
 	}
 
-	// Decorate the metrics reader with metrics instrumentation.
-	mf := otelmetrics.NewFactory(s.telset.MeterProvider)
-	mf = mf.Namespace(metrics.NSOptions{Name: "jaeger_metricstore"})
-	return metricstoremetrics.NewReaderDecorator(metricsReader, mf), nil
+	return metricsReader, nil
 }
 
 func (s *server) Shutdown(ctx context.Context) error {

cmd/jaeger/internal/extension/jaegerquery/server_test.go

@@ -26,6 +26,7 @@ import (
 	"github.com/jaegertracing/jaeger/cmd/query/app/querysvc"
 	"github.com/jaegertracing/jaeger/internal/grpctest"
 	"github.com/jaegertracing/jaeger/pkg/metrics"
+	"github.com/jaegertracing/jaeger/pkg/telemetry"
 	"github.com/jaegertracing/jaeger/pkg/testutils"
 	"github.com/jaegertracing/jaeger/storage"
 	"github.com/jaegertracing/jaeger/storage/dependencystore"
@@ -73,7 +74,7 @@ type fakeMetricsFactory struct {
 }
 
 // Initialize implements storage.MetricsFactory.
-func (fmf fakeMetricsFactory) Initialize(*zap.Logger) error {
+func (fmf fakeMetricsFactory) Initialize(telemetry.Settings) error {
 	if fmf.name == "need-initialize-error" {
 		return errors.New("test-error")
 	}

cmd/jaeger/internal/extension/jaegerstorage/extension.go

@@ -117,12 +117,13 @@ func newStorageExt(config *Config, telset component.TelemetrySettings) *storageE
 func (s *storageExt) Start(_ context.Context, host component.Host) error {
 	telset := telemetry.FromOtelComponent(s.telset, host)
 	telset.Metrics = telset.Metrics.Namespace(metrics.NSOptions{Name: "jaeger"})
-	getMetricsFactory := func(name, kind string) metrics.Factory {
+	scopedMetricsFactory := func(name, kind, role string) metrics.Factory {
 		return telset.Metrics.Namespace(metrics.NSOptions{
 			Name: "storage",
 			Tags: map[string]string{
 				"name": name,
 				"kind": kind,
+				"role": role,
 			},
 		})
 	}
@@ -134,35 +135,35 @@ func (s *storageExt) Start(_ context.Context, host component.Host) error {
 		case cfg.Memory != nil:
 			factory, err = memory.NewFactoryWithConfig(
 				*cfg.Memory,
-				getMetricsFactory(storageName, "memory"),
+				scopedMetricsFactory(storageName, "memory", "tracestore"),
 				s.telset.Logger,
 			), nil
 		case cfg.Badger != nil:
 			factory, err = badger.NewFactoryWithConfig(
 				*cfg.Badger,
-				getMetricsFactory(storageName, "badger"),
+				scopedMetricsFactory(storageName, "badger", "tracestore"),
 				s.telset.Logger)
 		case cfg.GRPC != nil:
 			grpcTelset := telset
-			grpcTelset.Metrics = getMetricsFactory(storageName, "grpc")
+			grpcTelset.Metrics = scopedMetricsFactory(storageName, "grpc", "tracestore")
 			//nolint: contextcheck
 			factory, err = grpc.NewFactoryWithConfig(*cfg.GRPC, grpcTelset)
 		case cfg.Cassandra != nil:
 			factory, err = cassandra.NewFactoryWithConfig(
 				*cfg.Cassandra,
-				getMetricsFactory(storageName, "cassandra"),
+				scopedMetricsFactory(storageName, "cassandra", "tracestore"),
 				s.telset.Logger,
 			)
 		case cfg.Elasticsearch != nil:
 			factory, err = es.NewFactoryWithConfig(
 				*cfg.Elasticsearch,
-				getMetricsFactory(storageName, "elasticsearch"),
+				scopedMetricsFactory(storageName, "elasticsearch", "tracestore"),
 				s.telset.Logger,
 			)
 		case cfg.Opensearch != nil:
 			factory, err = es.NewFactoryWithConfig(
 				*cfg.Opensearch,
-				getMetricsFactory(storageName, "opensearch"),
+				scopedMetricsFactory(storageName, "opensearch", "tracestore"),
 				s.telset.Logger,
 			)
 		}
@@ -177,7 +178,11 @@ func (s *storageExt) Start(_ context.Context, host component.Host) error {
 		var metricsFactory storage.MetricsFactory
 		var err error
 		if cfg.Prometheus != nil {
-			metricsFactory, err = prometheus.NewFactoryWithConfig(*cfg.Prometheus, s.telset.Logger)
+			promTelset := telset
+			promTelset.Metrics = scopedMetricsFactory(metricStorageName, "prometheus", "metricstore")
+			metricsFactory, err = prometheus.NewFactoryWithConfig(
+				*cfg.Prometheus,
+				promTelset)
 		}
 		if err != nil {
 			return fmt.Errorf("failed to initialize metrics storage '%s': %w", metricStorageName, err)

cmd/query/main.go

@@ -32,7 +32,6 @@ import (
 	metricsPlugin "github.com/jaegertracing/jaeger/plugin/metrics"
 	"github.com/jaegertracing/jaeger/plugin/storage"
 	"github.com/jaegertracing/jaeger/ports"
-	"github.com/jaegertracing/jaeger/storage/metricsstore/metricstoremetrics"
 )
 
 func main() {
@@ -99,7 +98,7 @@ func main() {
 				logger.Fatal("Failed to create dependency reader", zap.Error(err))
 			}
 
-			metricsQueryService, err := createMetricsQueryService(metricsReaderFactory, v, logger, metricsFactory)
+			metricsQueryService, err := createMetricsQueryService(metricsReaderFactory, v, baseTelset)
 			if err != nil {
 				logger.Fatal("Failed to create metrics query service", zap.Error(err))
 			}
@@ -166,20 +165,18 @@ func main() {
 func createMetricsQueryService(
 	metricsReaderFactory *metricsPlugin.Factory,
 	v *viper.Viper,
-	logger *zap.Logger,
-	metricsReaderMetricsFactory metrics.Factory,
+	telset telemetry.Settings,
 ) (querysvc.MetricsQueryService, error) {
-	if err := metricsReaderFactory.Initialize(logger); err != nil {
+	if err := metricsReaderFactory.Initialize(telset); err != nil {
 		return nil, fmt.Errorf("failed to init metrics reader factory: %w", err)
 	}
 
 	// Ensure default parameter values are loaded correctly.
-	metricsReaderFactory.InitFromViper(v, logger)
+	metricsReaderFactory.InitFromViper(v, telset.Logger)
 	reader, err := metricsReaderFactory.CreateMetricsReader()
 	if err != nil {
 		return nil, fmt.Errorf("failed to create metrics reader: %w", err)
 	}
 
-	// Decorate the metrics reader with metrics instrumentation.
-	return metricstoremetrics.NewReaderDecorator(reader, metricsReaderMetricsFactory), nil
+	return reader, nil
 }

plugin/metrics/disabled/factory.go

@@ -9,6 +9,7 @@ import (
 	"github.com/spf13/viper"
 	"go.uber.org/zap"
 
+	"github.com/jaegertracing/jaeger/pkg/telemetry"
 	"github.com/jaegertracing/jaeger/plugin"
 	"github.com/jaegertracing/jaeger/storage/metricsstore"
 )
@@ -30,7 +31,7 @@ func (*Factory) AddFlags(_ *flag.FlagSet) {}
 func (*Factory) InitFromViper(_ *viper.Viper, _ *zap.Logger) {}
 
 // Initialize implements storage.MetricsFactory.
-func (*Factory) Initialize(_ *zap.Logger) error {
+func (*Factory) Initialize(_ telemetry.Settings) error {
 	return nil
 }
 

plugin/metrics/disabled/factory_test.go

@@ -10,16 +10,17 @@ import (
 	"github.com/stretchr/testify/require"
 	"go.uber.org/zap"
 
+	"github.com/jaegertracing/jaeger/pkg/telemetry"
 	"github.com/jaegertracing/jaeger/storage"
 )
 
 var _ storage.MetricsFactory = new(Factory)
 
 func TestPrometheusFactory(t *testing.T) {
 	f := NewFactory()
-	require.NoError(t, f.Initialize(zap.NewNop()))
+	require.NoError(t, f.Initialize(telemetry.NoopSettings()))
 
-	err := f.Initialize(nil)
+	err := f.Initialize(telemetry.NoopSettings())
 	require.NoError(t, err)
 
 	f.AddFlags(nil)

plugin/metrics/factory.go

@@ -10,6 +10,8 @@ import (
 	"github.com/spf13/viper"
 	"go.uber.org/zap"
 
+	"github.com/jaegertracing/jaeger/pkg/metrics"
+	"github.com/jaegertracing/jaeger/pkg/telemetry"
 	"github.com/jaegertracing/jaeger/plugin"
 	"github.com/jaegertracing/jaeger/plugin/metrics/disabled"
 	"github.com/jaegertracing/jaeger/plugin/metrics/prometheus"
@@ -63,9 +65,17 @@ func (*Factory) getFactoryOfType(factoryType string) (storage.MetricsFactory, er
 }
 
 // Initialize implements storage.MetricsFactory.
-func (f *Factory) Initialize(logger *zap.Logger) error {
-	for _, factory := range f.factories {
-		factory.Initialize(logger)
+func (f *Factory) Initialize(telset telemetry.Settings) error {
+	for kind, factory := range f.factories {
+		scopedTelset := telset
+		scopedTelset.Metrics = telset.Metrics.Namespace(metrics.NSOptions{
+			Name: "storage",
+			Tags: map[string]string{
+				"kind": kind,
+				"role": "metricstore",
+			},
+		})
+		factory.Initialize(scopedTelset)
 	}
 	return nil
 }

plugin/metrics/factory_test.go

@@ -12,6 +12,7 @@ import (
 	"github.com/stretchr/testify/require"
 	"go.uber.org/zap"
 
+	"github.com/jaegertracing/jaeger/pkg/telemetry"
 	"github.com/jaegertracing/jaeger/plugin/metrics/disabled"
 	"github.com/jaegertracing/jaeger/storage"
 	"github.com/jaegertracing/jaeger/storage/mocks"
@@ -53,7 +54,7 @@ func TestCreateMetricsReader(t *testing.T) {
 	require.NoError(t, err)
 	require.NotNil(t, f)
 
-	require.NoError(t, f.Initialize(zap.NewNop()))
+	require.NoError(t, f.Initialize(telemetry.NoopSettings()))
 
 	reader, err := f.CreateMetricsReader()
 	require.NoError(t, err)

plugin/metrics/prometheus/factory.go

@@ -7,29 +7,29 @@ import (
 	"flag"
 
 	"github.com/spf13/viper"
-	"go.opentelemetry.io/otel"
-	"go.opentelemetry.io/otel/trace"
 	"go.uber.org/zap"
 
 	"github.com/jaegertracing/jaeger/pkg/prometheus/config"
+	"github.com/jaegertracing/jaeger/pkg/telemetry"
 	"github.com/jaegertracing/jaeger/plugin"
 	prometheusstore "github.com/jaegertracing/jaeger/plugin/metrics/prometheus/metricsstore"
 	"github.com/jaegertracing/jaeger/storage/metricsstore"
+	"github.com/jaegertracing/jaeger/storage/metricsstore/metricstoremetrics"
 )
 
 var _ plugin.Configurable = (*Factory)(nil)
 
 // Factory implements storage.Factory and creates storage components backed by memory store.
 type Factory struct {
 	options *Options
-	logger  *zap.Logger
-	tracer  trace.TracerProvider
+	telset  telemetry.Settings
 }
 
 // NewFactory creates a new Factory.
 func NewFactory() *Factory {
+	telset := telemetry.NoopSettings()
 	return &Factory{
-		tracer:  otel.GetTracerProvider(),
+		telset:  telset,
 		options: NewOptions(),
 	}
 }
@@ -47,19 +47,23 @@ func (f *Factory) InitFromViper(v *viper.Viper, logger *zap.Logger) {
 }
 
 // Initialize implements storage.MetricsFactory.
-func (f *Factory) Initialize(logger *zap.Logger) error {
-	f.logger = logger
+func (f *Factory) Initialize(telset telemetry.Settings) error {
+	f.telset = telset
 	return nil
 }
 
 // CreateMetricsReader implements storage.MetricsFactory.
 func (f *Factory) CreateMetricsReader() (metricsstore.Reader, error) {
-	return prometheusstore.NewMetricsReader(f.options.Configuration, f.logger, f.tracer)
+	mr, err := prometheusstore.NewMetricsReader(f.options.Configuration, f.telset.Logger, f.telset.TracerProvider)
+	if err != nil {
+		return nil, err
+	}
+	return metricstoremetrics.NewReaderDecorator(mr, f.telset.Metrics), nil
 }
 
 func NewFactoryWithConfig(
 	cfg config.Configuration,
-	logger *zap.Logger,
+	telset telemetry.Settings,
 ) (*Factory, error) {
 	if err := cfg.Validate(); err != nil {
 		return nil, err
@@ -68,6 +72,6 @@ func NewFactoryWithConfig(
 	f.options = &Options{
 		Configuration: cfg,
 	}
-	f.Initialize(logger)
+	f.Initialize(telset)
 	return f, nil
 }