Convert search service to use service tracing.

This converts the search service to use the service tracer.
It also initialises the grpc service with a trace provider.

services/search/pkg/command/server.go

@@ -7,6 +7,7 @@ import (
 	"github.com/oklog/run"
 	"github.com/owncloud/ocis/v2/ocis-pkg/config/configlog"
 	ogrpc "github.com/owncloud/ocis/v2/ocis-pkg/service/grpc"
+	"github.com/owncloud/ocis/v2/ocis-pkg/tracing"
 	"github.com/owncloud/ocis/v2/ocis-pkg/version"
 	"github.com/owncloud/ocis/v2/services/search/pkg/config"
 	"github.com/owncloud/ocis/v2/services/search/pkg/config/parser"
@@ -14,7 +15,6 @@ import (
 	"github.com/owncloud/ocis/v2/services/search/pkg/metrics"
 	"github.com/owncloud/ocis/v2/services/search/pkg/server/debug"
 	"github.com/owncloud/ocis/v2/services/search/pkg/server/grpc"
-	"github.com/owncloud/ocis/v2/services/search/pkg/tracing"
 	"github.com/urfave/cli/v2"
 )
 
@@ -29,11 +29,15 @@ func Server(cfg *config.Config) *cli.Command {
 		},
 		Action: func(c *cli.Context) error {
 			logger := logging.Configure(cfg.Service.Name, cfg.Log)
-			err := tracing.Configure(cfg)
+			traceProvider, err := tracing.GetServiceTraceProvider(cfg.Tracing, cfg.Service.Name)
 			if err != nil {
 				return err
 			}
-			err = ogrpc.Configure(append(ogrpc.GetClientOptions(cfg.GRPCClientTLS), ogrpc.WithTraceProvider(tracing.TraceProvider))...)
+			err = ogrpc.Configure(
+				append(ogrpc.GetClientOptions(cfg.GRPCClientTLS),
+					ogrpc.WithTraceProvider(traceProvider),
+				)...,
+			)
 			if err != nil {
 				return err
 			}
@@ -57,6 +61,7 @@ func Server(cfg *config.Config) *cli.Command {
 				grpc.Context(ctx),
 				grpc.Metrics(mtrcs),
 				grpc.JWTSecret(cfg.TokenManager.JWTSecret),
+				grpc.TraceProvider(traceProvider),
 			)
 			defer teardown()
 			if err != nil {

services/search/pkg/config/tracing.go

@@ -1,5 +1,7 @@
 package config
 
+import "github.com/owncloud/ocis/v2/ocis-pkg/tracing"
+
 // Tracing defines the available tracing configuration.
 type Tracing struct {
 	Enabled   bool   `ocisConfig:"enabled" env:"OCIS_TRACING_ENABLED;SEARCH_TRACING_ENABLED" desc:"Activates tracing."`
@@ -7,3 +9,13 @@ type Tracing struct {
 	Endpoint  string `ocisConfig:"endpoint" env:"OCIS_TRACING_ENDPOINT;SEARCH_TRACING_ENDPOINT" desc:"The endpoint of the tracing agent."`
 	Collector string `ocisConfig:"collector" env:"OCIS_TRACING_COLLECTOR;SEARCH_TRACING_COLLECTOR" desc:"The HTTP endpoint for sending spans directly to a collector, i.e. http://jaeger-collector:14268/api/traces. Only used if the tracing endpoint is unset."`
 }
+
+// Convert Tracing to the tracing package's Config struct.
+func (t Tracing) Convert() tracing.Config {
+	return tracing.Config{
+		Enabled:   t.Enabled,
+		Type:      t.Type,
+		Endpoint:  t.Endpoint,
+		Collector: t.Collector,
+	}
+}

services/search/pkg/server/grpc/option.go

@@ -8,6 +8,7 @@ import (
 	"github.com/owncloud/ocis/v2/services/search/pkg/metrics"
 	svc "github.com/owncloud/ocis/v2/services/search/pkg/service/grpc/v0"
 	"github.com/urfave/cli/v2"
+	"go.opentelemetry.io/otel/trace"
 )
 
 // Option defines a single option function.
@@ -15,14 +16,15 @@ type Option func(o *Options)
 
 // Options defines the available options for this package.
 type Options struct {
-	Name      string
+	Name          string
-	Logger    log.Logger
+	Logger        log.Logger
-	Context   context.Context
+	Context       context.Context
-	Config    *config.Config
+	Config        *config.Config
-	Metrics   *metrics.Metrics
+	Metrics       *metrics.Metrics
-	Flags     []cli.Flag
+	Flags         []cli.Flag
-	Handler   *svc.Service
+	Handler       *svc.Service
-	JWTSecret string
+	JWTSecret     string
+	TraceProvider trace.TracerProvider
 }
 
 // newOptions initializes the available default options.
@@ -91,3 +93,10 @@ func JWTSecret(val string) Option {
 		o.JWTSecret = val
 	}
 }
+
+// TraceProvider provides a function to set the trace provider option.
+func TraceProvider(val trace.TracerProvider) Option {
+	return func(o *Options) {
+		o.TraceProvider = val
+	}
+}

services/search/pkg/server/grpc/server.go

@@ -24,6 +24,7 @@ func Server(opts ...Option) (grpc.Service, func(), error) {
 		grpc.Logger(options.Logger),
 		grpc.Flags(options.Flags...),
 		grpc.Version(version.GetString()),
+		grpc.TraceProvider(options.TraceProvider),
 	)
 	if err != nil {
 		options.Logger.Fatal().Err(err).Msg("Error creating search service")

services/search/pkg/tracing/tracing.go

@@ -1,23 +0,0 @@
-package tracing
-
-import (
-	pkgtrace "github.com/owncloud/ocis/v2/ocis-pkg/tracing"
-	"github.com/owncloud/ocis/v2/services/search/pkg/config"
-	"go.opentelemetry.io/otel/trace"
-)
-
-var (
-	// TraceProvider is the global trace provider for the proxy service.
-	TraceProvider = trace.NewNoopTracerProvider()
-)
-
-func Configure(cfg *config.Config) error {
-	var err error
-	if cfg.Tracing.Enabled {
-		if TraceProvider, err = pkgtrace.GetTraceProvider(cfg.Tracing.Endpoint, cfg.Tracing.Collector, cfg.Service.Name, cfg.Tracing.Type); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}