Rename strategy store to sampling strategy provider

Signed-off-by: Yuri Shkuro <github@ysh.us>

cmd/all-in-one/main.go

@@ -46,7 +46,7 @@ import (
 	"github.com/jaegertracing/jaeger/pkg/tenancy"
 	"github.com/jaegertracing/jaeger/pkg/version"
 	metricsPlugin "github.com/jaegertracing/jaeger/plugin/metrics"
-	ss "github.com/jaegertracing/jaeger/plugin/sampling/strategystore"
+	ss "github.com/jaegertracing/jaeger/plugin/sampling/strategyprovider"
 	"github.com/jaegertracing/jaeger/plugin/storage"
 	"github.com/jaegertracing/jaeger/ports"
 	"github.com/jaegertracing/jaeger/storage/dependencystore"
@@ -68,13 +68,13 @@ func main() {
 	if err != nil {
 		log.Fatalf("Cannot initialize storage factory: %v", err)
 	}
-	strategyStoreFactoryConfig, err := ss.FactoryConfigFromEnv()
+	samplingStrategyFactoryConfig, err := ss.FactoryConfigFromEnv()
 	if err != nil {
-		log.Fatalf("Cannot initialize sampling strategy store factory config: %v", err)
+		log.Fatalf("Cannot initialize sampling strategy factory config: %v", err)
 	}
-	strategyStoreFactory, err := ss.NewFactory(*strategyStoreFactoryConfig)
+	samplingStrategyFactory, err := ss.NewFactory(*samplingStrategyFactoryConfig)
 	if err != nil {
-		log.Fatalf("Cannot initialize sampling strategy store factory: %v", err)
+		log.Fatalf("Cannot initialize sampling strategy factory: %v", err)
 	}
 
 	fc := metricsPlugin.FactoryConfigFromEnv()
@@ -133,13 +133,13 @@ by default uses only in-memory database.`,
 				logger.Fatal("Failed to create sampling store factory", zap.Error(err))
 			}
 
-			strategyStoreFactory.InitFromViper(v, logger)
-			if err := strategyStoreFactory.Initialize(collectorMetricsFactory, ssFactory, logger); err != nil {
-				logger.Fatal("Failed to init sampling strategy store factory", zap.Error(err))
+			samplingStrategyFactory.InitFromViper(v, logger)
+			if err := samplingStrategyFactory.Initialize(collectorMetricsFactory, ssFactory, logger); err != nil {
+				logger.Fatal("Failed to init sampling strategy factory", zap.Error(err))
 			}
-			strategyStore, aggregator, err := strategyStoreFactory.CreateStrategyStore()
+			samplingProvider, samplingAggregator, err := samplingStrategyFactory.CreateStrategyProvider()
 			if err != nil {
-				logger.Fatal("Failed to create sampling strategy store", zap.Error(err))
+				logger.Fatal("Failed to create sampling strategy provider", zap.Error(err))
 			}
 
 			aOpts := new(agentApp.Builder).InitFromViper(v)
@@ -161,14 +161,14 @@ by default uses only in-memory database.`,
 
 			// collector
 			c := collectorApp.New(&collectorApp.CollectorParams{
-				ServiceName:    "jaeger-collector",
-				Logger:         logger,
-				MetricsFactory: collectorMetricsFactory,
-				SpanWriter:     spanWriter,
-				StrategyStore:  strategyStore,
-				Aggregator:     aggregator,
-				HealthCheck:    svc.HC(),
-				TenancyMgr:     tm,
+				ServiceName:        "jaeger-collector",
+				Logger:             logger,
+				MetricsFactory:     collectorMetricsFactory,
+				SpanWriter:         spanWriter,
+				SamplingProvider:   samplingProvider,
+				SamplingAggregator: samplingAggregator,
+				HealthCheck:        svc.HC(),
+				TenancyMgr:         tm,
 			})
 			if err := c.Start(cOpts); err != nil {
 				log.Fatal(err)
@@ -238,7 +238,7 @@ by default uses only in-memory database.`,
 		agentGrpcRep.AddFlags,
 		collectorFlags.AddFlags,
 		queryApp.AddFlags,
-		strategyStoreFactory.AddFlags,
+		samplingStrategyFactory.AddFlags,
 		metricsReaderFactory.AddFlags,
 	)
 

cmd/collector/app/collector.go

@@ -28,7 +28,7 @@ import (
 	"github.com/jaegertracing/jaeger/cmd/collector/app/flags"
 	"github.com/jaegertracing/jaeger/cmd/collector/app/handler"
 	"github.com/jaegertracing/jaeger/cmd/collector/app/processor"
-	"github.com/jaegertracing/jaeger/cmd/collector/app/sampling/strategystore"
+	"github.com/jaegertracing/jaeger/cmd/collector/app/sampling/samplingstrategy"
 	"github.com/jaegertracing/jaeger/cmd/collector/app/server"
 	"github.com/jaegertracing/jaeger/internal/safeexpvar"
 	"github.com/jaegertracing/jaeger/model"
@@ -46,16 +46,16 @@ const (
 // Collector returns the collector as a manageable unit of work
 type Collector struct {
 	// required to start a new collector
-	serviceName    string
-	logger         *zap.Logger
-	metricsFactory metrics.Factory
-	spanWriter     spanstore.Writer
-	strategyStore  strategystore.StrategyStore
-	aggregator     strategystore.Aggregator
-	hCheck         *healthcheck.HealthCheck
-	spanProcessor  processor.SpanProcessor
-	spanHandlers   *SpanHandlers
-	tenancyMgr     *tenancy.Manager
+	serviceName        string
+	logger             *zap.Logger
+	metricsFactory     metrics.Factory
+	spanWriter         spanstore.Writer
+	samplingProvider   samplingstrategy.Provider
+	samplingAggregator samplingstrategy.Aggregator
+	hCheck             *healthcheck.HealthCheck
+	spanProcessor      processor.SpanProcessor
+	spanHandlers       *SpanHandlers
+	tenancyMgr         *tenancy.Manager
 
 	// state, read only
 	hServer                    *http.Server
@@ -69,27 +69,27 @@ type Collector struct {
 
 // CollectorParams to construct a new Jaeger Collector.
 type CollectorParams struct {
-	ServiceName    string
-	Logger         *zap.Logger
-	MetricsFactory metrics.Factory
-	SpanWriter     spanstore.Writer
-	StrategyStore  strategystore.StrategyStore
-	Aggregator     strategystore.Aggregator
-	HealthCheck    *healthcheck.HealthCheck
-	TenancyMgr     *tenancy.Manager
+	ServiceName        string
+	Logger             *zap.Logger
+	MetricsFactory     metrics.Factory
+	SpanWriter         spanstore.Writer
+	SamplingProvider   samplingstrategy.Provider
+	SamplingAggregator samplingstrategy.Aggregator
+	HealthCheck        *healthcheck.HealthCheck
+	TenancyMgr         *tenancy.Manager
 }
 
 // New constructs a new collector component, ready to be started
 func New(params *CollectorParams) *Collector {
 	return &Collector{
-		serviceName:    params.ServiceName,
-		logger:         params.Logger,
-		metricsFactory: params.MetricsFactory,
-		spanWriter:     params.SpanWriter,
-		strategyStore:  params.StrategyStore,
-		aggregator:     params.Aggregator,
-		hCheck:         params.HealthCheck,
-		tenancyMgr:     params.TenancyMgr,
+		serviceName:        params.ServiceName,
+		logger:             params.Logger,
+		metricsFactory:     params.MetricsFactory,
+		spanWriter:         params.SpanWriter,
+		samplingProvider:   params.SamplingProvider,
+		samplingAggregator: params.SamplingAggregator,
+		hCheck:             params.HealthCheck,
+		tenancyMgr:         params.TenancyMgr,
 	}
 }
 
@@ -104,9 +104,9 @@ func (c *Collector) Start(options *flags.CollectorOptions) error {
 	}
 
 	var additionalProcessors []ProcessSpan
-	if c.aggregator != nil {
+	if c.samplingAggregator != nil {
 		additionalProcessors = append(additionalProcessors, func(span *model.Span, _ /* tenant */ string) {
-			c.aggregator.HandleRootSpan(span, c.logger)
+			c.samplingAggregator.HandleRootSpan(span, c.logger)
 		})
 	}
 
@@ -117,7 +117,7 @@ func (c *Collector) Start(options *flags.CollectorOptions) error {
 		HostPort:                options.GRPC.HostPort,
 		Handler:                 c.spanHandlers.GRPCHandler,
 		TLSConfig:               options.GRPC.TLS,
-		SamplingStore:           c.strategyStore,
+		SamplingProvider:        c.samplingProvider,
 		Logger:                  c.logger,
 		MaxReceiveMessageLength: options.GRPC.MaxReceiveMessageLength,
 		MaxConnectionAge:        options.GRPC.MaxConnectionAge,
@@ -129,13 +129,13 @@ func (c *Collector) Start(options *flags.CollectorOptions) error {
 	c.grpcServer = grpcServer
 
 	httpServer, err := server.StartHTTPServer(&server.HTTPServerParams{
-		HostPort:       options.HTTP.HostPort,
-		Handler:        c.spanHandlers.JaegerBatchesHandler,
-		TLSConfig:      options.HTTP.TLS,
-		HealthCheck:    c.hCheck,
-		MetricsFactory: c.metricsFactory,
-		SamplingStore:  c.strategyStore,
-		Logger:         c.logger,
+		HostPort:         options.HTTP.HostPort,
+		Handler:          c.spanHandlers.JaegerBatchesHandler,
+		TLSConfig:        options.HTTP.TLS,
+		HealthCheck:      c.hCheck,
+		MetricsFactory:   c.metricsFactory,
+		SamplingProvider: c.samplingProvider,
+		Logger:           c.logger,
 	})
 	if err != nil {
 		return fmt.Errorf("could not start HTTP server: %w", err)
@@ -213,8 +213,8 @@ func (c *Collector) Close() error {
 	}
 
 	// aggregator does not exist for all strategy stores. only Close() if exists.
-	if c.aggregator != nil {
-		if err := c.aggregator.Close(); err != nil {
+	if c.samplingAggregator != nil {
+		if err := c.samplingAggregator.Close(); err != nil {
 			c.logger.Error("failed to close aggregator.", zap.Error(err))
 		}
 	}

cmd/collector/app/collector_test.go

@@ -75,17 +75,17 @@ func TestNewCollector(t *testing.T) {
 	baseMetrics := metricstest.NewFactory(time.Hour)
 	defer baseMetrics.Backend.Stop()
 	spanWriter := &fakeSpanWriter{}
-	strategyStore := &mockStrategyStore{}
+	samplingProvider := &mockSamplingProvider{}
 	tm := &tenancy.Manager{}
 
 	c := New(&CollectorParams{
-		ServiceName:    "collector",
-		Logger:         logger,
-		MetricsFactory: baseMetrics,
-		SpanWriter:     spanWriter,
-		StrategyStore:  strategyStore,
-		HealthCheck:    hc,
-		TenancyMgr:     tm,
+		ServiceName:      "collector",
+		Logger:           logger,
+		MetricsFactory:   baseMetrics,
+		SpanWriter:       spanWriter,
+		SamplingProvider: samplingProvider,
+		HealthCheck:      hc,
+		TenancyMgr:       tm,
 	})
 
 	collectorOpts := optionsForEphemeralPorts()
@@ -102,17 +102,17 @@ func TestCollector_StartErrors(t *testing.T) {
 			baseMetrics := metricstest.NewFactory(time.Hour)
 			defer baseMetrics.Backend.Stop()
 			spanWriter := &fakeSpanWriter{}
-			strategyStore := &mockStrategyStore{}
+			samplingProvider := &mockSamplingProvider{}
 			tm := &tenancy.Manager{}
 
 			c := New(&CollectorParams{
-				ServiceName:    "collector",
-				Logger:         logger,
-				MetricsFactory: baseMetrics,
-				SpanWriter:     spanWriter,
-				StrategyStore:  strategyStore,
-				HealthCheck:    hc,
-				TenancyMgr:     tm,
+				ServiceName:      "collector",
+				Logger:           logger,
+				MetricsFactory:   baseMetrics,
+				SpanWriter:       spanWriter,
+				SamplingProvider: samplingProvider,
+				HealthCheck:      hc,
+				TenancyMgr:       tm,
 			})
 			err := c.Start(options)
 			require.Error(t, err)
@@ -144,13 +144,13 @@ func TestCollector_StartErrors(t *testing.T) {
 	run("OTLP/HTTP", options, "could not start OTLP receiver")
 }
 
-type mockStrategyStore struct{}
+type mockSamplingProvider struct{}
 
-func (*mockStrategyStore) GetSamplingStrategy(context.Context, string /* serviceName */) (*api_v2.SamplingStrategyResponse, error) {
+func (*mockSamplingProvider) GetSamplingStrategy(context.Context, string /* serviceName */) (*api_v2.SamplingStrategyResponse, error) {
 	return &api_v2.SamplingStrategyResponse{}, nil
 }
 
-func (*mockStrategyStore) Close() error {
+func (*mockSamplingProvider) Close() error {
 	return nil
 }
 
@@ -161,17 +161,17 @@ func TestCollector_PublishOpts(t *testing.T) {
 	metricsFactory := metricstest.NewFactory(time.Second)
 	defer metricsFactory.Backend.Stop()
 	spanWriter := &fakeSpanWriter{}
-	strategyStore := &mockStrategyStore{}
+	samplingProvider := &mockSamplingProvider{}
 	tm := &tenancy.Manager{}
 
 	c := New(&CollectorParams{
-		ServiceName:    "collector",
-		Logger:         logger,
-		MetricsFactory: metricsFactory,
-		SpanWriter:     spanWriter,
-		StrategyStore:  strategyStore,
-		HealthCheck:    hc,
-		TenancyMgr:     tm,
+		ServiceName:      "collector",
+		Logger:           logger,
+		MetricsFactory:   metricsFactory,
+		SpanWriter:       spanWriter,
+		SamplingProvider: samplingProvider,
+		HealthCheck:      hc,
+		TenancyMgr:       tm,
 	})
 	collectorOpts := optionsForEphemeralPorts()
 	collectorOpts.NumWorkers = 24
@@ -191,19 +191,19 @@ func TestAggregator(t *testing.T) {
 	baseMetrics := metricstest.NewFactory(time.Hour)
 	defer baseMetrics.Backend.Stop()
 	spanWriter := &fakeSpanWriter{}
-	strategyStore := &mockStrategyStore{}
+	samplingProvider := &mockSamplingProvider{}
 	agg := &mockAggregator{}
 	tm := &tenancy.Manager{}
 
 	c := New(&CollectorParams{
-		ServiceName:    "collector",
-		Logger:         logger,
-		MetricsFactory: baseMetrics,
-		SpanWriter:     spanWriter,
-		StrategyStore:  strategyStore,
-		HealthCheck:    hc,
-		Aggregator:     agg,
-		TenancyMgr:     tm,
+		ServiceName:        "collector",
+		Logger:             logger,
+		MetricsFactory:     baseMetrics,
+		SpanWriter:         spanWriter,
+		SamplingProvider:   samplingProvider,
+		HealthCheck:        hc,
+		SamplingAggregator: agg,
+		TenancyMgr:         tm,
 	})
 	collectorOpts := optionsForEphemeralPorts()
 	collectorOpts.NumWorkers = 10

cmd/collector/app/sampling/grpc_handler.go

@@ -17,23 +17,23 @@ package sampling
 import (
 	"context"
 
-	"github.com/jaegertracing/jaeger/cmd/collector/app/sampling/strategystore"
+	"github.com/jaegertracing/jaeger/cmd/collector/app/sampling/samplingstrategy"
 	"github.com/jaegertracing/jaeger/proto-gen/api_v2"
 )
 
 // GRPCHandler is sampling strategy handler for gRPC.
 type GRPCHandler struct {
-	store strategystore.StrategyStore
+	samplingProvider samplingstrategy.Provider
 }
 
 // NewGRPCHandler creates a handler that controls sampling strategies for services.
-func NewGRPCHandler(store strategystore.StrategyStore) GRPCHandler {
+func NewGRPCHandler(provider samplingstrategy.Provider) GRPCHandler {
 	return GRPCHandler{
-		store: store,
+		samplingProvider: provider,
 	}
 }
 
 // GetSamplingStrategy returns sampling decision from store.
 func (s GRPCHandler) GetSamplingStrategy(ctx context.Context, param *api_v2.SamplingStrategyParameters) (*api_v2.SamplingStrategyResponse, error) {
-	return s.store.GetSamplingStrategy(ctx, param.GetServiceName())
+	return s.samplingProvider.GetSamplingStrategy(ctx, param.GetServiceName())
 }

cmd/collector/app/sampling/strategystore/empty_test.go → cmd/collector/app/sampling/samplingstrategy/empty_test.go

@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package strategystore
+package samplingstrategy
 
 import (
 	"testing"