@@ -11,8 +11,10 @@ import (

 	"github.com/docker/docker/api/server/router"

 	"github.com/docker/docker/api/types"

 	"github.com/docker/docker/dockerversion"

+	"github.com/docker/docker/internal/otelutil"

 	"github.com/gorilla/mux"

 	"go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp"

+	"go.opentelemetry.io/otel/baggage"

 )

 // versionMatcher defines a variable matcher to be parsed by the router

@@ -42,7 +44,10 @@ func (s *Server) makeHTTPHandler(handler httputils.APIFunc, operation string) ht

 		// use intermediate variable to prevent "should not use basic type

 		// string as key in context.WithValue" golint errors

-		ctx := context.WithValue(r.Context(), dockerversion.UAStringKey{}, r.Header.Get("User-Agent"))

+		ua := r.Header.Get("User-Agent")

+		ctx := baggage.ContextWithBaggage(context.WithValue(r.Context(), dockerversion.UAStringKey{}, ua), otelutil.MustNewBaggage(

+			otelutil.MustNewMemberRaw(otelutil.TriggerKey, "api"),

+		))

 		r = r.WithContext(ctx)

 		handlerFunc := s.handlerWithGlobalMiddlewares(handler)

@@ -31,6 +31,7 @@ import (

 	"github.com/docker/docker/daemon/initlayer"

 	"github.com/docker/docker/errdefs"

 	"github.com/docker/docker/internal/nlwrap"

+	"github.com/docker/docker/internal/otelutil"

 	"github.com/docker/docker/internal/usergroup"

 	"github.com/docker/docker/libcontainerd/remote"

 	"github.com/docker/docker/libnetwork"

@@ -51,6 +52,7 @@ import (

 	"github.com/opencontainers/selinux/go-selinux/label"

 	"github.com/pkg/errors"

 	"github.com/vishvananda/netlink"

+	"go.opentelemetry.io/otel/baggage"

 	"golang.org/x/sys/unix"

 )

@@ -849,7 +851,9 @@ func (daemon *Daemon) initNetworkController(cfg *config.Config, activeSandboxes

 		return err

 	}

-	ctx := context.TODO()

+	ctx := baggage.ContextWithBaggage(context.TODO(), otelutil.MustNewBaggage(

+		otelutil.MustNewMemberRaw(otelutil.TriggerKey, "daemon.initNetworkController"),

+	))

 	daemon.netController, err = libnetwork.New(ctx, netOptions...)

 	if err != nil {

 		return fmt.Errorf("error obtaining controller instance: %v", err)

@@ -21,6 +21,7 @@ import (

 	"github.com/docker/docker/daemon/config"

 	"github.com/docker/docker/daemon/network"

 	"github.com/docker/docker/errdefs"

+	"github.com/docker/docker/internal/otelutil"

 	"github.com/docker/docker/libnetwork"

 	lncluster "github.com/docker/docker/libnetwork/cluster"

 	"github.com/docker/docker/libnetwork/driverapi"

@@ -32,6 +33,7 @@ import (

 	"github.com/docker/docker/opts"

 	"github.com/docker/docker/pkg/plugingetter"

 	"github.com/docker/go-connections/nat"

+	"go.opentelemetry.io/otel/baggage"

 )

 // PredefinedNetworkError is returned when user tries to create predefined network that already exists.

@@ -203,11 +205,14 @@ func (daemon *Daemon) setupIngress(cfg *config.Config, create *clustertypes.Netw

 		daemon.releaseIngress(staleID)

 	}

-	if _, err := daemon.createNetwork(context.TODO(), cfg, create.CreateRequest, create.ID, true); err != nil {

+	ctx := baggage.ContextWithBaggage(context.TODO(), otelutil.MustNewBaggage(

+		otelutil.MustNewMemberRaw(otelutil.TriggerKey, "daemon.setupIngress"),

+	))

+	if _, err := daemon.createNetwork(ctx, cfg, create.CreateRequest, create.ID, true); err != nil {

 		// If it is any other error other than already

 		// exists error log error and return.

 		if _, ok := err.(libnetwork.NetworkNameError); !ok {

-			log.G(context.TODO()).Errorf("Failed creating ingress network: %v", err)

+			log.G(ctx).Errorf("Failed creating ingress network: %v", err)

 			return

 		}

 		// Otherwise continue down the call to create or recreate sandbox.

new file mode 100644

@@ -0,0 +1,43 @@

+package otelutil

+

+import (

+	"context"

+

+	"github.com/containerd/log"

+	"go.opentelemetry.io/otel/baggage"

+)

+

+// TriggerKey is the key used for the 'trigger' member in the baggage. It is

+// used to know what triggered a code path (e.g. API call, libnet init, etc...)

+const TriggerKey = "trigger"

+

+// MustNewBaggage creates an OTel Baggage containing the provided members. It

+// panics if the baggage cannot be created.

+//

+// DO NOT USE this function with dynamic values.

+func MustNewBaggage(members ...baggage.Member) baggage.Baggage {

+	b, err := baggage.New(members...)

+	if err != nil {

+		log.G(context.Background()).WithFields(log.Fields{

+			"error":   err,

+			"members": members,

+		}).Fatal("OTel baggage creation failure")

+	}

+	return b

+}

+

+// MustNewMemberRaw creates an OTel Baggage member with the provided key and

+// value. It panics if the key or value aren't valid UTF-8 strings.

+//

+// DO NOT USE this function with dynamic key/value.

+func MustNewMemberRaw(key, value string) baggage.Member {

+	m, err := baggage.NewMemberRaw(key, value)

+	if err != nil {

+		log.G(context.Background()).WithFields(log.Fields{

+			"error": err,

+			"key":   key,

+			"value": value,

+		}).Fatal("OTel baggage member creation failure")

+	}

+	return m

+}

@@ -5,6 +5,8 @@ import (

 	"github.com/containerd/log"

 	"github.com/moby/buildkit/util/tracing/detect"

+	"go.opentelemetry.io/contrib/processors/baggagecopy"

+	"go.opentelemetry.io/otel/baggage"

 	"go.opentelemetry.io/otel/sdk/resource"

 	sdktrace "go.opentelemetry.io/otel/sdk/trace"

 	"go.opentelemetry.io/otel/trace"

@@ -31,6 +33,7 @@ func NewTracerProvider(ctx context.Context, allowNoop bool) (trace.TracerProvide

 		sdktrace.WithResource(resource.Default()),

 		sdktrace.WithSyncer(detect.Recorder),

 		sdktrace.WithBatcher(exp),

+		sdktrace.WithSpanProcessor(baggagecopy.NewSpanProcessor(func(member baggage.Member) bool { return true })),

 	)

 	return tp, tp.Shutdown

 }

@@ -5,7 +5,9 @@ import (

 	"fmt"

 	"strconv"

+	"github.com/docker/docker/internal/otelutil"

 	"github.com/docker/docker/libnetwork/drivers/bridge"

+	"go.opentelemetry.io/otel/baggage"

 )

 const libnGWNetwork = "docker_gwbridge"

@@ -15,7 +17,11 @@ func getPlatformOption() EndpointOption {

 }

 func (c *Controller) createGWNetwork() (*Network, error) {

-	n, err := c.NewNetwork(context.TODO(), "bridge", libnGWNetwork, "",

+	ctx := baggage.ContextWithBaggage(context.TODO(), otelutil.MustNewBaggage(

+		otelutil.MustNewMemberRaw(otelutil.TriggerKey, "libnetwork.Controller.createGWNetwork"),

+	))

+

+	n, err := c.NewNetwork(ctx, "bridge", libnGWNetwork, "",

 		NetworkOptionDriverOpts(map[string]string{

 			bridge.BridgeName:         libnGWNetwork,

 			bridge.EnableICC:          strconv.FormatBool(false),

@@ -9,10 +9,12 @@ import (

 	"net"

 	"github.com/containerd/log"

+	"github.com/docker/docker/internal/otelutil"

 	"github.com/docker/docker/libnetwork/datastore"

 	"github.com/docker/docker/libnetwork/types"

 	"go.opentelemetry.io/otel"

 	"go.opentelemetry.io/otel/attribute"

+	"go.opentelemetry.io/otel/baggage"

 	"go.opentelemetry.io/otel/trace"

 )

@@ -49,9 +51,12 @@ func (d *driver) populateNetworks() error {

 		return nil

 	}

+	ctx := baggage.ContextWithBaggage(context.TODO(), otelutil.MustNewBaggage(

+		otelutil.MustNewMemberRaw(otelutil.TriggerKey, spanPrefix+".initStore"),

+	))

 	for _, kvo := range kvol {

 		ncfg := kvo.(*networkConfiguration)

-		if err = d.createNetwork(context.TODO(), ncfg); err != nil {

+		if err = d.createNetwork(ctx, ncfg); err != nil {

 			log.G(context.TODO()).Warnf("could not create bridge network for id %s bridge name %s while booting up from persistent state: %v", ncfg.ID, ncfg.BridgeName, err)

 		}

 		log.G(context.TODO()).Debugf("Network (%.7s) restored", ncfg.ID)

@@ -100,6 +100,7 @@ require (

 	go.etcd.io/bbolt v1.3.11

 	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.56.0

 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.56.0

+	go.opentelemetry.io/contrib/processors/baggagecopy v0.4.0

 	go.opentelemetry.io/otel v1.31.0

 	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.31.0

 	go.opentelemetry.io/otel/sdk v1.31.0

@@ -614,6 +614,8 @@ go.opentelemetry.io/contrib/instrumentation/net/http/httptrace/otelhttptrace v0.

 go.opentelemetry.io/contrib/instrumentation/net/http/httptrace/otelhttptrace v0.56.0/go.mod h1:3qi2EEwMgB4xnKgPLqsDP3j9qxnHDZeHsnAxfjQqTko=

 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.56.0 h1:UP6IpuHFkUgOQL9FFQFrZ+5LiwhhYRbi7VZSIx6Nj5s=

 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.56.0/go.mod h1:qxuZLtbq5QDtdeSHsS7bcf6EH6uO6jUAgk764zd3rhM=

+go.opentelemetry.io/contrib/processors/baggagecopy v0.4.0 h1:SUsGRzllvPRJK6VKn1S3lsItIoQaLvExUh63cD+J+D8=

+go.opentelemetry.io/contrib/processors/baggagecopy v0.4.0/go.mod h1:68LCyaHcLhUf3tciKAAbSFKkr4Pkrt24ei0/xHm0No8=

 go.opentelemetry.io/otel v1.31.0 h1:NsJcKPIW0D0H3NgzPDHmo0WW6SptzPdqg/L1zsIm2hY=

 go.opentelemetry.io/otel v1.31.0/go.mod h1:O0C14Yl9FgkjqcCZAsE053C13OaddMYr/hz6clDkEJE=

 go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.31.0 h1:FZ6ei8GFW7kyPYdxJaV2rgI6M+4tvZzhYsQ2wgyVC08=

new file mode 100644

@@ -0,0 +1,201 @@

+                                 Apache License

+                           Version 2.0, January 2004

+                        http://www.apache.org/licenses/

+

+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

+

+   1. Definitions.

+

+      "License" shall mean the terms and conditions for use, reproduction,

+      and distribution as defined by Sections 1 through 9 of this document.

+

+      "Licensor" shall mean the copyright owner or entity authorized by

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+

+      "Legal Entity" shall mean the union of the acting entity and all

+      other entities that control, are controlled by, or are under common

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+      outstanding shares, or (iii) beneficial ownership of such entity.

+

+      "You" (or "Your") shall mean an individual or Legal Entity

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+      "Source" form shall mean the preferred form for making modifications,

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+

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+      "Work" shall mean the work of authorship, whether in Source or

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+      form, that is based on (or derived from) the Work and for which the

+      editorial revisions, annotations, elaborations, or other modifications

+      represent, as a whole, an original work of authorship. For the purposes

+      of this License, Derivative Works shall not include works that remain

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+      to the Licensor or its representatives, including but not limited to

+      communication on electronic mailing lists, source code control systems,

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+      designated in writing by the copyright owner as "Not a Contribution."

+

+      "Contributor" shall mean Licensor and any individual or Legal Entity

+      on behalf of whom a Contribution has been received by Licensor and

+      subsequently incorporated within the Work.

+

+   2. Grant of Copyright License. Subject to the terms and conditions of

+      this License, each Contributor hereby grants to You a perpetual,

+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable

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+      the conditions stated in this License.

+

+   5. Submission of Contributions. Unless You explicitly state otherwise,

+      any Contribution intentionally submitted for inclusion in the Work

+      by You to the Licensor shall be under the terms and conditions of

+      this License, without any additional terms or conditions.

+      Notwithstanding the above, nothing herein shall supersede or modify

+      the terms of any separate license agreement you may have executed

+      with Licensor regarding such Contributions.

+

+   6. Trademarks. This License does not grant permission to use the trade

+      names, trademarks, service marks, or product names of the Licensor,

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+

+   7. Disclaimer of Warranty. Unless required by applicable law or

+      agreed to in writing, Licensor provides the Work (and each

+      Contributor provides its Contributions) on an "AS IS" BASIS,

+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or

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+      risks associated with Your exercise of permissions under this License.

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+   8. Limitation of Liability. In no event and under no legal theory,

+      whether in tort (including negligence), contract, or otherwise,

+      unless required by applicable law (such as deliberate and grossly

+      negligent acts) or agreed to in writing, shall any Contributor be

+      liable to You for damages, including any direct, indirect, special,

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+      of your accepting any such warranty or additional liability.

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+

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+      To apply the Apache License to your work, attach the following

+      boilerplate notice, with the fields enclosed by brackets "[]"

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+   Unless required by applicable law or agreed to in writing, software

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new file mode 100644

@@ -0,0 +1,27 @@

+// Copyright The OpenTelemetry Authors

+// SPDX-License-Identifier: Apache-2.0

+

+// Package baggagecopy is an OpenTelemetry [Span Processor] that reads key/values

+// stored in [Baggage] in the starting span's parent context and adds them as

+// attributes to the span.

+//

+// Keys and values added to Baggage will appear on all subsequent child spans for

+// a trace within this service and will be propagated to external services via

+// propagation headers.

+// If the external services also have a Baggage span processor, the keys and

+// values will appear in those child spans as well.

+//

+// Do not put sensitive information in Baggage.

+//

+// # Usage

+//

+// Add the span processor when configuring the tracer provider.

+//

+// The convenience function [AllowAllBaggageKeys] is provided to

+// allow all baggage keys to be copied to the span. Alternatively, you can

+// provide a custom baggage key predicate to select which baggage keys you want

+// to copy.

+//

+// [Span Processor]: https://opentelemetry.io/docs/specs/otel/trace/sdk/#span-processor

+// [Baggage]: https://opentelemetry.io/docs/specs/otel/api/baggage

+package baggagecopy // import "go.opentelemetry.io/contrib/processors/baggagecopy"

new file mode 100644

@@ -0,0 +1,63 @@

+// Copyright The OpenTelemetry Authors

+// SPDX-License-Identifier: Apache-2.0

+

+package baggagecopy // import "go.opentelemetry.io/contrib/processors/baggagecopy"

+

+import (

+	"context"

+

+	"go.opentelemetry.io/otel/attribute"

+	"go.opentelemetry.io/otel/baggage"

+	"go.opentelemetry.io/otel/sdk/trace"

+)

+

+// Filter returns true if the baggage member should be added to a span.

+type Filter func(member baggage.Member) bool

+

+// AllowAllMembers allows all baggage members to be added to a span.

+var AllowAllMembers Filter = func(baggage.Member) bool { return true }

+

+// SpanProcessor is a [trace.SpanProcessor] implementation that adds baggage

+// members onto a span as attributes.

+type SpanProcessor struct {

+	filter Filter

+}

+

+var _ trace.SpanProcessor = (*SpanProcessor)(nil)

+

+// NewSpanProcessor returns a new [SpanProcessor].

+//

+// The Baggage span processor duplicates onto a span the attributes found

+// in Baggage in the parent context at the moment the span is started.

+// The passed filter determines which baggage members are added to the span.

+//

+// If filter is nil, all baggage members will be added.

+func NewSpanProcessor(filter Filter) *SpanProcessor {

+	return &SpanProcessor{

+		filter: filter,

+	}

+}

+

+// OnStart is called when a span is started and adds span attributes for baggage contents.

+func (processor SpanProcessor) OnStart(ctx context.Context, span trace.ReadWriteSpan) {

+	filter := processor.filter

+	if filter == nil {

+		filter = AllowAllMembers

+	}

+

+	for _, member := range baggage.FromContext(ctx).Members() {

+		if filter(member) {

+			span.SetAttributes(attribute.String(member.Key(), member.Value()))

+		}

+	}

+}

+

+// OnEnd is called when span is finished and is a no-op for this processor.

+func (processor SpanProcessor) OnEnd(s trace.ReadOnlySpan) {}

+

+// Shutdown is called when the SDK shuts down and is a no-op for this processor.

+func (processor SpanProcessor) Shutdown(context.Context) error { return nil }

+

+// ForceFlush exports all ended spans to the configured Exporter that have not yet

+// been exported and is a no-op for this processor.

+func (processor SpanProcessor) ForceFlush(context.Context) error { return nil }

@@ -1288,6 +1288,9 @@ go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp

 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/internal/request

 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/internal/semconv

 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/internal/semconvutil

+# go.opentelemetry.io/contrib/processors/baggagecopy v0.4.0

+## explicit; go 1.22

+go.opentelemetry.io/contrib/processors/baggagecopy

 # go.opentelemetry.io/otel v1.31.0

 ## explicit; go 1.22

 go.opentelemetry.io/otel