diff --git a/vendor/go.opentelemetry.io/otel/internal/baggage/baggage.go b/vendor/go.opentelemetry.io/otel/internal/baggage/baggage.go
new file mode 100644
index 0000000..6b5c0c2
--- /dev/null
+++ b/vendor/go.opentelemetry.io/otel/internal/baggage/baggage.go
@@ -0,0 +1,338 @@
+// Copyright The OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package baggage provides types and functions to manage W3C Baggage.
+package baggage
+
+import (
+	"context"
+
+	"go.opentelemetry.io/otel/label"
+)
+
+type rawMap map[label.Key]label.Value
+type keySet map[label.Key]struct{}
+
+// Map is an immutable storage for correlations.
+type Map struct {
+	m rawMap
+}
+
+// MapUpdate contains information about correlation changes to be
+// made.
+type MapUpdate struct {
+	// DropSingleK contains a single key to be dropped from
+	// correlations. Use this to avoid an overhead of a slice
+	// allocation if there is only one key to drop.
+	DropSingleK label.Key
+	// DropMultiK contains all the keys to be dropped from
+	// correlations.
+	DropMultiK []label.Key
+
+	// SingleKV contains a single key-value pair to be added to
+	// correlations. Use this to avoid an overhead of a slice
+	// allocation if there is only one key-value pair to add.
+	SingleKV label.KeyValue
+	// MultiKV contains all the key-value pairs to be added to
+	// correlations.
+	MultiKV []label.KeyValue
+}
+
+func newMap(raw rawMap) Map {
+	return Map{
+		m: raw,
+	}
+}
+
+// NewEmptyMap creates an empty correlations map.
+func NewEmptyMap() Map {
+	return newMap(nil)
+}
+
+// NewMap creates a map with the contents of the update applied. In
+// this function, having an update with DropSingleK or DropMultiK
+// makes no sense - those fields are effectively ignored.
+func NewMap(update MapUpdate) Map {
+	return NewEmptyMap().Apply(update)
+}
+
+// Apply creates a copy of the map with the contents of the update
+// applied. Apply will first drop the keys from DropSingleK and
+// DropMultiK, then add key-value pairs from SingleKV and MultiKV.
+func (m Map) Apply(update MapUpdate) Map {
+	delSet, addSet := getModificationSets(update)
+	mapSize := getNewMapSize(m.m, delSet, addSet)
+
+	r := make(rawMap, mapSize)
+	for k, v := range m.m {
+		// do not copy items we want to drop
+		if _, ok := delSet[k]; ok {
+			continue
+		}
+		// do not copy items we would overwrite
+		if _, ok := addSet[k]; ok {
+			continue
+		}
+		r[k] = v
+	}
+	if update.SingleKV.Key.Defined() {
+		r[update.SingleKV.Key] = update.SingleKV.Value
+	}
+	for _, kv := range update.MultiKV {
+		r[kv.Key] = kv.Value
+	}
+	if len(r) == 0 {
+		r = nil
+	}
+	return newMap(r)
+}
+
+func getModificationSets(update MapUpdate) (delSet, addSet keySet) {
+	deletionsCount := len(update.DropMultiK)
+	if update.DropSingleK.Defined() {
+		deletionsCount++
+	}
+	if deletionsCount > 0 {
+		delSet = make(map[label.Key]struct{}, deletionsCount)
+		for _, k := range update.DropMultiK {
+			delSet[k] = struct{}{}
+		}
+		if update.DropSingleK.Defined() {
+			delSet[update.DropSingleK] = struct{}{}
+		}
+	}
+
+	additionsCount := len(update.MultiKV)
+	if update.SingleKV.Key.Defined() {
+		additionsCount++
+	}
+	if additionsCount > 0 {
+		addSet = make(map[label.Key]struct{}, additionsCount)
+		for _, k := range update.MultiKV {
+			addSet[k.Key] = struct{}{}
+		}
+		if update.SingleKV.Key.Defined() {
+			addSet[update.SingleKV.Key] = struct{}{}
+		}
+	}
+
+	return
+}
+
+func getNewMapSize(m rawMap, delSet, addSet keySet) int {
+	mapSizeDiff := 0
+	for k := range addSet {
+		if _, ok := m[k]; !ok {
+			mapSizeDiff++
+		}
+	}
+	for k := range delSet {
+		if _, ok := m[k]; ok {
+			if _, inAddSet := addSet[k]; !inAddSet {
+				mapSizeDiff--
+			}
+		}
+	}
+	return len(m) + mapSizeDiff
+}
+
+// Value gets a value from correlations map and returns a boolean
+// value indicating whether the key exist in the map.
+func (m Map) Value(k label.Key) (label.Value, bool) {
+	value, ok := m.m[k]
+	return value, ok
+}
+
+// HasValue returns a boolean value indicating whether the key exist
+// in the map.
+func (m Map) HasValue(k label.Key) bool {
+	_, has := m.Value(k)
+	return has
+}
+
+// Len returns a length of the map.
+func (m Map) Len() int {
+	return len(m.m)
+}
+
+// Foreach calls a passed callback once on each key-value pair until
+// all the key-value pairs of the map were iterated or the callback
+// returns false, whichever happens first.
+func (m Map) Foreach(f func(label.KeyValue) bool) {
+	for k, v := range m.m {
+		if !f(label.KeyValue{
+			Key:   k,
+			Value: v,
+		}) {
+			return
+		}
+	}
+}
+
+type correlationsType struct{}
+
+// SetHookFunc describes a type of a callback that is called when
+// storing baggage in the context.
+type SetHookFunc func(context.Context) context.Context
+
+// GetHookFunc describes a type of a callback that is called when
+// getting baggage from the context.
+type GetHookFunc func(context.Context, Map) Map
+
+// value under this key is either of type Map or correlationsData
+var correlationsKey = &correlationsType{}
+
+type correlationsData struct {
+	m       Map
+	setHook SetHookFunc
+	getHook GetHookFunc
+}
+
+func (d correlationsData) isHookless() bool {
+	return d.setHook == nil && d.getHook == nil
+}
+
+type hookKind int
+
+const (
+	hookKindSet hookKind = iota
+	hookKindGet
+)
+
+func (d *correlationsData) overrideHook(kind hookKind, setHook SetHookFunc, getHook GetHookFunc) {
+	switch kind {
+	case hookKindSet:
+		d.setHook = setHook
+	case hookKindGet:
+		d.getHook = getHook
+	}
+}
+
+// ContextWithSetHook installs a hook function that will be invoked
+// every time ContextWithMap is called. To avoid unnecessary callback
+// invocations (recursive or not), the callback can temporarily clear
+// the hooks from the context with the ContextWithNoHooks function.
+//
+// Note that NewContext also calls ContextWithMap, so the hook will be
+// invoked.
+//
+// Passing nil SetHookFunc creates a context with no set hook to call.
+//
+// This function should not be used by applications or libraries. It
+// is mostly for interoperation with other observability APIs.
+func ContextWithSetHook(ctx context.Context, hook SetHookFunc) context.Context {
+	return contextWithHook(ctx, hookKindSet, hook, nil)
+}
+
+// ContextWithGetHook installs a hook function that will be invoked
+// every time MapFromContext is called. To avoid unnecessary callback
+// invocations (recursive or not), the callback can temporarily clear
+// the hooks from the context with the ContextWithNoHooks function.
+//
+// Note that NewContext also calls MapFromContext, so the hook will be
+// invoked.
+//
+// Passing nil GetHookFunc creates a context with no get hook to call.
+//
+// This function should not be used by applications or libraries. It
+// is mostly for interoperation with other observability APIs.
+func ContextWithGetHook(ctx context.Context, hook GetHookFunc) context.Context {
+	return contextWithHook(ctx, hookKindGet, nil, hook)
+}
+
+func contextWithHook(ctx context.Context, kind hookKind, setHook SetHookFunc, getHook GetHookFunc) context.Context {
+	switch v := ctx.Value(correlationsKey).(type) {
+	case correlationsData:
+		v.overrideHook(kind, setHook, getHook)
+		if v.isHookless() {
+			return context.WithValue(ctx, correlationsKey, v.m)
+		}
+		return context.WithValue(ctx, correlationsKey, v)
+	case Map:
+		return contextWithOneHookAndMap(ctx, kind, setHook, getHook, v)
+	default:
+		m := NewEmptyMap()
+		return contextWithOneHookAndMap(ctx, kind, setHook, getHook, m)
+	}
+}
+
+func contextWithOneHookAndMap(ctx context.Context, kind hookKind, setHook SetHookFunc, getHook GetHookFunc, m Map) context.Context {
+	d := correlationsData{m: m}
+	d.overrideHook(kind, setHook, getHook)
+	if d.isHookless() {
+		return ctx
+	}
+	return context.WithValue(ctx, correlationsKey, d)
+}
+
+// ContextWithNoHooks creates a context with all the hooks
+// disabled. Also returns old set and get hooks. This function can be
+// used to temporarily clear the context from hooks and then reinstate
+// them by calling ContextWithSetHook and ContextWithGetHook functions
+// passing the hooks returned by this function.
+//
+// This function should not be used by applications or libraries. It
+// is mostly for interoperation with other observability APIs.
+func ContextWithNoHooks(ctx context.Context) (context.Context, SetHookFunc, GetHookFunc) {
+	switch v := ctx.Value(correlationsKey).(type) {
+	case correlationsData:
+		return context.WithValue(ctx, correlationsKey, v.m), v.setHook, v.getHook
+	default:
+		return ctx, nil, nil
+	}
+}
+
+// ContextWithMap returns a context with the Map entered into it.
+func ContextWithMap(ctx context.Context, m Map) context.Context {
+	switch v := ctx.Value(correlationsKey).(type) {
+	case correlationsData:
+		v.m = m
+		ctx = context.WithValue(ctx, correlationsKey, v)
+		if v.setHook != nil {
+			ctx = v.setHook(ctx)
+		}
+		return ctx
+	default:
+		return context.WithValue(ctx, correlationsKey, m)
+	}
+}
+
+// ContextWithNoCorrelationData returns a context stripped of correlation
+// data.
+func ContextWithNoCorrelationData(ctx context.Context) context.Context {
+	return context.WithValue(ctx, correlationsKey, nil)
+}
+
+// NewContext returns a context with the map from passed context
+// updated with the passed key-value pairs.
+func NewContext(ctx context.Context, keyvalues ...label.KeyValue) context.Context {
+	return ContextWithMap(ctx, MapFromContext(ctx).Apply(MapUpdate{
+		MultiKV: keyvalues,
+	}))
+}
+
+// MapFromContext gets the current Map from a Context.
+func MapFromContext(ctx context.Context) Map {
+	switch v := ctx.Value(correlationsKey).(type) {
+	case correlationsData:
+		if v.getHook != nil {
+			return v.getHook(ctx, v.m)
+		}
+		return v.m
+	case Map:
+		return v
+	default:
+		return NewEmptyMap()
+	}
+}
diff --git a/vendor/go.opentelemetry.io/otel/internal/rawhelpers.go b/vendor/go.opentelemetry.io/otel/internal/rawhelpers.go
new file mode 100644
index 0000000..dae825e
--- /dev/null
+++ b/vendor/go.opentelemetry.io/otel/internal/rawhelpers.go
@@ -0,0 +1,91 @@
+// Copyright The OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package internal
+
+import (
+	"math"
+	"unsafe"
+)
+
+func BoolToRaw(b bool) uint64 {
+	if b {
+		return 1
+	}
+	return 0
+}
+
+func RawToBool(r uint64) bool {
+	return r != 0
+}
+
+func Int64ToRaw(i int64) uint64 {
+	return uint64(i)
+}
+
+func RawToInt64(r uint64) int64 {
+	return int64(r)
+}
+
+func Uint64ToRaw(u uint64) uint64 {
+	return u
+}
+
+func RawToUint64(r uint64) uint64 {
+	return r
+}
+
+func Float64ToRaw(f float64) uint64 {
+	return math.Float64bits(f)
+}
+
+func RawToFloat64(r uint64) float64 {
+	return math.Float64frombits(r)
+}
+
+func Int32ToRaw(i int32) uint64 {
+	return uint64(i)
+}
+
+func RawToInt32(r uint64) int32 {
+	return int32(r)
+}
+
+func Uint32ToRaw(u uint32) uint64 {
+	return uint64(u)
+}
+
+func RawToUint32(r uint64) uint32 {
+	return uint32(r)
+}
+
+func Float32ToRaw(f float32) uint64 {
+	return Uint32ToRaw(math.Float32bits(f))
+}
+
+func RawToFloat32(r uint64) float32 {
+	return math.Float32frombits(RawToUint32(r))
+}
+
+func RawPtrToFloat64Ptr(r *uint64) *float64 {
+	return (*float64)(unsafe.Pointer(r))
+}
+
+func RawPtrToInt64Ptr(r *uint64) *int64 {
+	return (*int64)(unsafe.Pointer(r))
+}
+
+func RawPtrToUint64Ptr(r *uint64) *uint64 {
+	return r
+}
diff --git a/vendor/go.opentelemetry.io/otel/internal/trace/noop/noop.go b/vendor/go.opentelemetry.io/otel/internal/trace/noop/noop.go
new file mode 100644
index 0000000..c09a737
--- /dev/null
+++ b/vendor/go.opentelemetry.io/otel/internal/trace/noop/noop.go
@@ -0,0 +1,35 @@
+// Copyright The OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package noop provides noop tracing implementations for tracer and span.
+package noop
+
+import (
+	"context"
+
+	"go.opentelemetry.io/otel/api/trace"
+)
+
+var (
+	// Tracer is a noop tracer that starts noop spans.
+	Tracer trace.Tracer
+
+	// Span is a noop Span.
+	Span trace.Span
+)
+
+func init() {
+	Tracer = trace.NoopTracerProvider().Tracer("")
+	_, Span = Tracer.Start(context.Background(), "")
+}