vendor: spanner

5 files changed, 3182 insertions, 0 deletions

diff --git a/vendor/github.com/census-instrumentation/opencensus-proto/AUTHORS b/vendor/github.com/census-instrumentation/opencensus-proto/AUTHORS
new file mode 100644
index 000000000..e068e731e
--- /dev/null
+++ b/vendor/github.com/census-instrumentation/opencensus-proto/AUTHORS
@@ -0,0 +1 @@
+Google Inc.
\ No newline at end of file
diff --git a/vendor/github.com/census-instrumentation/opencensus-proto/LICENSE b/vendor/github.com/census-instrumentation/opencensus-proto/LICENSE
new file mode 100644
index 000000000..d64569567
--- /dev/null
+++ b/vendor/github.com/census-instrumentation/opencensus-proto/LICENSE
@@ -0,0 +1,202 @@
+
+                                 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
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      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
+      separable from, or merely link (or bind by name) to the interfaces of,
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+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
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+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
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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
+      copyright license to reproduce, prepare Derivative Works of,
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+      Work and such Derivative Works in Source or Object form.
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+   3. Grant of Patent 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
+      (except as stated in this section) patent license to make, have made,
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+      where such license applies only to those patent claims licensable
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+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
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+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
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+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      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,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   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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+   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
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+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
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+   9. Accepting Warranty or Additional Liability. While redistributing
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+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
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+   Copyright [yyyy] [name of copyright owner]
+
+   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.
diff --git a/vendor/github.com/census-instrumentation/opencensus-proto/gen-go/resource/v1/resource.pb.go b/vendor/github.com/census-instrumentation/opencensus-proto/gen-go/resource/v1/resource.pb.go
new file mode 100644
index 000000000..194dd70df
--- /dev/null
+++ b/vendor/github.com/census-instrumentation/opencensus-proto/gen-go/resource/v1/resource.pb.go
@@ -0,0 +1,189 @@
+// Copyright 2018, OpenCensus 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.
+
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.26.0
+// 	protoc        v3.17.3
+// source: opencensus/proto/resource/v1/resource.proto
+
+package v1
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+// Resource information.
+type Resource struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Type identifier for the resource.
+	Type string `protobuf:"bytes,1,opt,name=type,proto3" json:"type,omitempty"`
+	// Set of labels that describe the resource.
+	Labels map[string]string `protobuf:"bytes,2,rep,name=labels,proto3" json:"labels,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
+}
+
+func (x *Resource) Reset() {
+	*x = Resource{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_opencensus_proto_resource_v1_resource_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Resource) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Resource) ProtoMessage() {}
+
+func (x *Resource) ProtoReflect() protoreflect.Message {
+	mi := &file_opencensus_proto_resource_v1_resource_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Resource.ProtoReflect.Descriptor instead.
+func (*Resource) Descriptor() ([]byte, []int) {
+	return file_opencensus_proto_resource_v1_resource_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *Resource) GetType() string {
+	if x != nil {
+		return x.Type
+	}
+	return ""
+}
+
+func (x *Resource) GetLabels() map[string]string {
+	if x != nil {
+		return x.Labels
+	}
+	return nil
+}
+
+var File_opencensus_proto_resource_v1_resource_proto protoreflect.FileDescriptor
+
+var file_opencensus_proto_resource_v1_resource_proto_rawDesc = []byte{
+	0x0a, 0x2b, 0x6f, 0x70, 0x65, 0x6e, 0x63, 0x65, 0x6e, 0x73, 0x75, 0x73, 0x2f, 0x70, 0x72, 0x6f,
+	0x74, 0x6f, 0x2f, 0x72, 0x65, 0x73, 0x6f, 0x75, 0x72, 0x63, 0x65, 0x2f, 0x76, 0x31, 0x2f, 0x72,
+	0x65, 0x73, 0x6f, 0x75, 0x72, 0x63, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x1c, 0x6f,
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+	0x6c, 0x61, 0x62, 0x65, 0x6c, 0x73, 0x18, 0x02, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x32, 0x2e, 0x6f,
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+	0x52, 0x06, 0x6c, 0x61, 0x62, 0x65, 0x6c, 0x73, 0x1a, 0x39, 0x0a, 0x0b, 0x4c, 0x61, 0x62, 0x65,
+	0x6c, 0x73, 0x45, 0x6e, 0x74, 0x72, 0x79, 0x12, 0x10, 0x0a, 0x03, 0x6b, 0x65, 0x79, 0x18, 0x01,
+	0x20, 0x01, 0x28, 0x09, 0x52, 0x03, 0x6b, 0x65, 0x79, 0x12, 0x14, 0x0a, 0x05, 0x76, 0x61, 0x6c,
+	0x75, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x3a,
+	0x02, 0x38, 0x01, 0x42, 0x9b, 0x01, 0x0a, 0x1f, 0x69, 0x6f, 0x2e, 0x6f, 0x70, 0x65, 0x6e, 0x63,
+	0x65, 0x6e, 0x73, 0x75, 0x73, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2e, 0x72, 0x65, 0x73, 0x6f,
+	0x75, 0x72, 0x63, 0x65, 0x2e, 0x76, 0x31, 0x42, 0x0d, 0x52, 0x65, 0x73, 0x6f, 0x75, 0x72, 0x63,
+	0x65, 0x50, 0x72, 0x6f, 0x74, 0x6f, 0x50, 0x01, 0x5a, 0x45, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62,
+	0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x63, 0x65, 0x6e, 0x73, 0x75, 0x73, 0x2d, 0x69, 0x6e, 0x73, 0x74,
+	0x72, 0x75, 0x6d, 0x65, 0x6e, 0x74, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x2f, 0x6f, 0x70, 0x65, 0x6e,
+	0x63, 0x65, 0x6e, 0x73, 0x75, 0x73, 0x2d, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f, 0x67, 0x65, 0x6e,
+	0x2d, 0x67, 0x6f, 0x2f, 0x72, 0x65, 0x73, 0x6f, 0x75, 0x72, 0x63, 0x65, 0x2f, 0x76, 0x31, 0xea,
+	0x02, 0x1f, 0x4f, 0x70, 0x65, 0x6e, 0x43, 0x65, 0x6e, 0x73, 0x75, 0x73, 0x3a, 0x3a, 0x50, 0x72,
+	0x6f, 0x74, 0x6f, 0x3a, 0x3a, 0x52, 0x65, 0x73, 0x6f, 0x75, 0x72, 0x63, 0x65, 0x3a, 0x3a, 0x56,
+	0x31, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_opencensus_proto_resource_v1_resource_proto_rawDescOnce sync.Once
+	file_opencensus_proto_resource_v1_resource_proto_rawDescData = file_opencensus_proto_resource_v1_resource_proto_rawDesc
+)
+
+func file_opencensus_proto_resource_v1_resource_proto_rawDescGZIP() []byte {
+	file_opencensus_proto_resource_v1_resource_proto_rawDescOnce.Do(func() {
+		file_opencensus_proto_resource_v1_resource_proto_rawDescData = protoimpl.X.CompressGZIP(file_opencensus_proto_resource_v1_resource_proto_rawDescData)
+	})
+	return file_opencensus_proto_resource_v1_resource_proto_rawDescData
+}
+
+var file_opencensus_proto_resource_v1_resource_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
+var file_opencensus_proto_resource_v1_resource_proto_goTypes = []interface{}{
+	(*Resource)(nil), // 0: opencensus.proto.resource.v1.Resource
+	nil,              // 1: opencensus.proto.resource.v1.Resource.LabelsEntry
+}
+var file_opencensus_proto_resource_v1_resource_proto_depIdxs = []int32{
+	1, // 0: opencensus.proto.resource.v1.Resource.labels:type_name -> opencensus.proto.resource.v1.Resource.LabelsEntry
+	1, // [1:1] is the sub-list for method output_type
+	1, // [1:1] is the sub-list for method input_type
+	1, // [1:1] is the sub-list for extension type_name
+	1, // [1:1] is the sub-list for extension extendee
+	0, // [0:1] is the sub-list for field type_name
+}
+
+func init() { file_opencensus_proto_resource_v1_resource_proto_init() }
+func file_opencensus_proto_resource_v1_resource_proto_init() {
+	if File_opencensus_proto_resource_v1_resource_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_opencensus_proto_resource_v1_resource_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Resource); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_opencensus_proto_resource_v1_resource_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   2,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_opencensus_proto_resource_v1_resource_proto_goTypes,
+		DependencyIndexes: file_opencensus_proto_resource_v1_resource_proto_depIdxs,
+		MessageInfos:      file_opencensus_proto_resource_v1_resource_proto_msgTypes,
+	}.Build()
+	File_opencensus_proto_resource_v1_resource_proto = out.File
+	file_opencensus_proto_resource_v1_resource_proto_rawDesc = nil
+	file_opencensus_proto_resource_v1_resource_proto_goTypes = nil
+	file_opencensus_proto_resource_v1_resource_proto_depIdxs = nil
+}
diff --git a/vendor/github.com/census-instrumentation/opencensus-proto/gen-go/trace/v1/trace.pb.go b/vendor/github.com/census-instrumentation/opencensus-proto/gen-go/trace/v1/trace.pb.go
new file mode 100644
index 000000000..d35612ca0
--- /dev/null
+++ b/vendor/github.com/census-instrumentation/opencensus-proto/gen-go/trace/v1/trace.pb.go
@@ -0,0 +1,2235 @@
+// Copyright 2017, OpenCensus 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.
+
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.26.0
+// 	protoc        v3.17.3
+// source: opencensus/proto/trace/v1/trace.proto
+
+package v1
+
+import (
+	v1 "github.com/census-instrumentation/opencensus-proto/gen-go/resource/v1"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	timestamppb "google.golang.org/protobuf/types/known/timestamppb"
+	wrapperspb "google.golang.org/protobuf/types/known/wrapperspb"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+// Type of span. Can be used to specify additional relationships between spans
+// in addition to a parent/child relationship.
+type Span_SpanKind int32
+
+const (
+	// Unspecified.
+	Span_SPAN_KIND_UNSPECIFIED Span_SpanKind = 0
+	// Indicates that the span covers server-side handling of an RPC or other
+	// remote network request.
+	Span_SERVER Span_SpanKind = 1
+	// Indicates that the span covers the client-side wrapper around an RPC or
+	// other remote request.
+	Span_CLIENT Span_SpanKind = 2
+)
+
+// Enum value maps for Span_SpanKind.
+var (
+	Span_SpanKind_name = map[int32]string{
+		0: "SPAN_KIND_UNSPECIFIED",
+		1: "SERVER",
+		2: "CLIENT",
+	}
+	Span_SpanKind_value = map[string]int32{
+		"SPAN_KIND_UNSPECIFIED": 0,
+		"SERVER":                1,
+		"CLIENT":                2,
+	}
+)
+
+func (x Span_SpanKind) Enum() *Span_SpanKind {
+	p := new(Span_SpanKind)
+	*p = x
+	return p
+}
+
+func (x Span_SpanKind) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (Span_SpanKind) Descriptor() protoreflect.EnumDescriptor {
+	return file_opencensus_proto_trace_v1_trace_proto_enumTypes[0].Descriptor()
+}
+
+func (Span_SpanKind) Type() protoreflect.EnumType {
+	return &file_opencensus_proto_trace_v1_trace_proto_enumTypes[0]
+}
+
+func (x Span_SpanKind) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use Span_SpanKind.Descriptor instead.
+func (Span_SpanKind) EnumDescriptor() ([]byte, []int) {
+	return file_opencensus_proto_trace_v1_trace_proto_rawDescGZIP(), []int{0, 0}
+}
+
+// Indicates whether the message was sent or received.
+type Span_TimeEvent_MessageEvent_Type int32
+
+const (
+	// Unknown event type.
+	Span_TimeEvent_MessageEvent_TYPE_UNSPECIFIED Span_TimeEvent_MessageEvent_Type = 0
+	// Indicates a sent message.
+	Span_TimeEvent_MessageEvent_SENT Span_TimeEvent_MessageEvent_Type = 1
+	// Indicates a received message.
+	Span_TimeEvent_MessageEvent_RECEIVED Span_TimeEvent_MessageEvent_Type = 2
+)
+
+// Enum value maps for Span_TimeEvent_MessageEvent_Type.
+var (
+	Span_TimeEvent_MessageEvent_Type_name = map[int32]string{
+		0: "TYPE_UNSPECIFIED",
+		1: "SENT",
+		2: "RECEIVED",
+	}
+	Span_TimeEvent_MessageEvent_Type_value = map[string]int32{
+		"TYPE_UNSPECIFIED": 0,
+		"SENT":             1,
+		"RECEIVED":         2,
+	}
+)
+
+func (x Span_TimeEvent_MessageEvent_Type) Enum() *Span_TimeEvent_MessageEvent_Type {
+	p := new(Span_TimeEvent_MessageEvent_Type)
+	*p = x
+	return p
+}
+
+func (x Span_TimeEvent_MessageEvent_Type) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (Span_TimeEvent_MessageEvent_Type) Descriptor() protoreflect.EnumDescriptor {
+	return file_opencensus_proto_trace_v1_trace_proto_enumTypes[1].Descriptor()
+}
+
+func (Span_TimeEvent_MessageEvent_Type) Type() protoreflect.EnumType {
+	return &file_opencensus_proto_trace_v1_trace_proto_enumTypes[1]
+}
+
+func (x Span_TimeEvent_MessageEvent_Type) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use Span_TimeEvent_MessageEvent_Type.Descriptor instead.
+func (Span_TimeEvent_MessageEvent_Type) EnumDescriptor() ([]byte, []int) {
+	return file_opencensus_proto_trace_v1_trace_proto_rawDescGZIP(), []int{0, 2, 1, 0}
+}
+
+// The relationship of the current span relative to the linked span: child,
+// parent, or unspecified.
+type Span_Link_Type int32
+
+const (
+	// The relationship of the two spans is unknown, or known but other
+	// than parent-child.
+	Span_Link_TYPE_UNSPECIFIED Span_Link_Type = 0
+	// The linked span is a child of the current span.
+	Span_Link_CHILD_LINKED_SPAN Span_Link_Type = 1
+	// The linked span is a parent of the current span.
+	Span_Link_PARENT_LINKED_SPAN Span_Link_Type = 2
+)
+
+// Enum value maps for Span_Link_Type.
+var (
+	Span_Link_Type_name = map[int32]string{
+		0: "TYPE_UNSPECIFIED",
+		1: "CHILD_LINKED_SPAN",
+		2: "PARENT_LINKED_SPAN",
+	}
+	Span_Link_Type_value = map[string]int32{
+		"TYPE_UNSPECIFIED":   0,
+		"CHILD_LINKED_SPAN":  1,
+		"PARENT_LINKED_SPAN": 2,
+	}
+)
+
+func (x Span_Link_Type) Enum() *Span_Link_Type {
+	p := new(Span_Link_Type)
+	*p = x
+	return p
+}
+
+func (x Span_Link_Type) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (Span_Link_Type) Descriptor() protoreflect.EnumDescriptor {
+	return file_opencensus_proto_trace_v1_trace_proto_enumTypes[2].Descriptor()
+}
+
+func (Span_Link_Type) Type() protoreflect.EnumType {
+	return &file_opencensus_proto_trace_v1_trace_proto_enumTypes[2]
+}
+
+func (x Span_Link_Type) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use Span_Link_Type.Descriptor instead.
+func (Span_Link_Type) EnumDescriptor() ([]byte, []int) {
+	return file_opencensus_proto_trace_v1_trace_proto_rawDescGZIP(), []int{0, 4, 0}
+}
+
+// A span represents a single operation within a trace. Spans can be
+// nested to form a trace tree. Spans may also be linked to other spans
+// from the same or different trace. And form graphs. Often, a trace
+// contains a root span that describes the end-to-end latency, and one
+// or more subspans for its sub-operations. A trace can also contain
+// multiple root spans, or none at all. Spans do not need to be
+// contiguous - there may be gaps or overlaps between spans in a trace.
+//
+// The next id is 17.
+// TODO(bdrutu): Add an example.
+type Span struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// A unique identifier for a trace. All spans from the same trace share
+	// the same `trace_id`. The ID is a 16-byte array. An ID with all zeroes
+	// is considered invalid.
+	//
+	// This field is semantically required. Receiver should generate new
+	// random trace_id if empty or invalid trace_id was received.
+	//
+	// This field is required.
+	TraceId []byte `protobuf:"bytes,1,opt,name=trace_id,json=traceId,proto3" json:"trace_id,omitempty"`
+	// A unique identifier for a span within a trace, assigned when the span
+	// is created. The ID is an 8-byte array. An ID with all zeroes is considered
+	// invalid.
+	//
+	// This field is semantically required. Receiver should generate new
+	// random span_id if empty or invalid span_id was received.
+	//
+	// This field is required.
+	SpanId []byte `protobuf:"bytes,2,opt,name=span_id,json=spanId,proto3" json:"span_id,omitempty"`
+	// The Tracestate on the span.
+	Tracestate *Span_Tracestate `protobuf:"bytes,15,opt,name=tracestate,proto3" json:"tracestate,omitempty"`
+	// The `span_id` of this span's parent span. If this is a root span, then this
+	// field must be empty. The ID is an 8-byte array.
+	ParentSpanId []byte `protobuf:"bytes,3,opt,name=parent_span_id,json=parentSpanId,proto3" json:"parent_span_id,omitempty"`
+	// A description of the span's operation.
+	//
+	// For example, the name can be a qualified method name or a file name
+	// and a line number where the operation is called. A best practice is to use
+	// the same display name at the same call point in an application.
+	// This makes it easier to correlate spans in different traces.
+	//
+	// This field is semantically required to be set to non-empty string.
+	// When null or empty string received - receiver may use string "name"
+	// as a replacement. There might be smarted algorithms implemented by
+	// receiver to fix the empty span name.
+	//
+	// This field is required.
+	Name *TruncatableString `protobuf:"bytes,4,opt,name=name,proto3" json:"name,omitempty"`
+	// Distinguishes between spans generated in a particular context. For example,
+	// two spans with the same name may be distinguished using `CLIENT` (caller)
+	// and `SERVER` (callee) to identify queueing latency associated with the span.
+	Kind Span_SpanKind `protobuf:"varint,14,opt,name=kind,proto3,enum=opencensus.proto.trace.v1.Span_SpanKind" json:"kind,omitempty"`
+	// The start time of the span. On the client side, this is the time kept by
+	// the local machine where the span execution starts. On the server side, this
+	// is the time when the server's application handler starts running.
+	//
+	// This field is semantically required. When not set on receive -
+	// receiver should set it to the value of end_time field if it was
+	// set. Or to the current time if neither was set. It is important to
+	// keep end_time > start_time for consistency.
+	//
+	// This field is required.
+	StartTime *timestamppb.Timestamp `protobuf:"bytes,5,opt,name=start_time,json=startTime,proto3" json:"start_time,omitempty"`
+	// The end time of the span. On the client side, this is the time kept by
+	// the local machine where the span execution ends. On the server side, this
+	// is the time when the server application handler stops running.
+	//
+	// This field is semantically required. When not set on receive -
+	// receiver should set it to start_time value. It is important to
+	// keep end_time > start_time for consistency.
+	//
+	// This field is required.
+	EndTime *timestamppb.Timestamp `protobuf:"bytes,6,opt,name=end_time,json=endTime,proto3" json:"end_time,omitempty"`
+	// A set of attributes on the span.
+	Attributes *Span_Attributes `protobuf:"bytes,7,opt,name=attributes,proto3" json:"attributes,omitempty"`
+	// A stack trace captured at the start of the span.
+	StackTrace *StackTrace `protobuf:"bytes,8,opt,name=stack_trace,json=stackTrace,proto3" json:"stack_trace,omitempty"`
+	// The included time events.
+	TimeEvents *Span_TimeEvents `protobuf:"bytes,9,opt,name=time_events,json=timeEvents,proto3" json:"time_events,omitempty"`
+	// The included links.
+	Links *Span_Links `protobuf:"bytes,10,opt,name=links,proto3" json:"links,omitempty"`
+	// An optional final status for this span. Semantically when Status
+	// wasn't set it is means span ended without errors and assume
+	// Status.Ok (code = 0).
+	Status *Status `protobuf:"bytes,11,opt,name=status,proto3" json:"status,omitempty"`
+	// An optional resource that is associated with this span. If not set, this span
+	// should be part of a batch that does include the resource information, unless resource
+	// information is unknown.
+	Resource *v1.Resource `protobuf:"bytes,16,opt,name=resource,proto3" json:"resource,omitempty"`
+	// A highly recommended but not required flag that identifies when a
+	// trace crosses a process boundary. True when the parent_span belongs
+	// to the same process as the current span. This flag is most commonly
+	// used to indicate the need to adjust time as clocks in different
+	// processes may not be synchronized.
+	SameProcessAsParentSpan *wrapperspb.BoolValue `protobuf:"bytes,12,opt,name=same_process_as_parent_span,json=sameProcessAsParentSpan,proto3" json:"same_process_as_parent_span,omitempty"`
+	// An optional number of child spans that were generated while this span
+	// was active. If set, allows an implementation to detect missing child spans.
+	ChildSpanCount *wrapperspb.UInt32Value `protobuf:"bytes,13,opt,name=child_span_count,json=childSpanCount,proto3" json:"child_span_count,omitempty"`
+}
+
+func (x *Span) Reset() {
+	*x = Span{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Span) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Span) ProtoMessage() {}
+
+func (x *Span) ProtoReflect() protoreflect.Message {
+	mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Span.ProtoReflect.Descriptor instead.
+func (*Span) Descriptor() ([]byte, []int) {
+	return file_opencensus_proto_trace_v1_trace_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *Span) GetTraceId() []byte {
+	if x != nil {
+		return x.TraceId
+	}
+	return nil
+}
+
+func (x *Span) GetSpanId() []byte {
+	if x != nil {
+		return x.SpanId
+	}
+	return nil
+}
+
+func (x *Span) GetTracestate() *Span_Tracestate {
+	if x != nil {
+		return x.Tracestate
+	}
+	return nil
+}
+
+func (x *Span) GetParentSpanId() []byte {
+	if x != nil {
+		return x.ParentSpanId
+	}
+	return nil
+}
+
+func (x *Span) GetName() *TruncatableString {
+	if x != nil {
+		return x.Name
+	}
+	return nil
+}
+
+func (x *Span) GetKind() Span_SpanKind {
+	if x != nil {
+		return x.Kind
+	}
+	return Span_SPAN_KIND_UNSPECIFIED
+}
+
+func (x *Span) GetStartTime() *timestamppb.Timestamp {
+	if x != nil {
+		return x.StartTime
+	}
+	return nil
+}
+
+func (x *Span) GetEndTime() *timestamppb.Timestamp {
+	if x != nil {
+		return x.EndTime
+	}
+	return nil
+}
+
+func (x *Span) GetAttributes() *Span_Attributes {
+	if x != nil {
+		return x.Attributes
+	}
+	return nil
+}
+
+func (x *Span) GetStackTrace() *StackTrace {
+	if x != nil {
+		return x.StackTrace
+	}
+	return nil
+}
+
+func (x *Span) GetTimeEvents() *Span_TimeEvents {
+	if x != nil {
+		return x.TimeEvents
+	}
+	return nil
+}
+
+func (x *Span) GetLinks() *Span_Links {
+	if x != nil {
+		return x.Links
+	}
+	return nil
+}
+
+func (x *Span) GetStatus() *Status {
+	if x != nil {
+		return x.Status
+	}
+	return nil
+}
+
+func (x *Span) GetResource() *v1.Resource {
+	if x != nil {
+		return x.Resource
+	}
+	return nil
+}
+
+func (x *Span) GetSameProcessAsParentSpan() *wrapperspb.BoolValue {
+	if x != nil {
+		return x.SameProcessAsParentSpan
+	}
+	return nil
+}
+
+func (x *Span) GetChildSpanCount() *wrapperspb.UInt32Value {
+	if x != nil {
+		return x.ChildSpanCount
+	}
+	return nil
+}
+
+// The `Status` type defines a logical error model that is suitable for different
+// programming environments, including REST APIs and RPC APIs. This proto's fields
+// are a subset of those of
+// [google.rpc.Status](https://github.com/googleapis/googleapis/blob/master/google/rpc/status.proto),
+// which is used by [gRPC](https://github.com/grpc).
+type Status struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The status code. This is optional field. It is safe to assume 0 (OK)
+	// when not set.
+	Code int32 `protobuf:"varint,1,opt,name=code,proto3" json:"code,omitempty"`
+	// A developer-facing error message, which should be in English.
+	Message string `protobuf:"bytes,2,opt,name=message,proto3" json:"message,omitempty"`
+}
+
+func (x *Status) Reset() {
+	*x = Status{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Status) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Status) ProtoMessage() {}
+
+func (x *Status) ProtoReflect() protoreflect.Message {
+	mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Status.ProtoReflect.Descriptor instead.
+func (*Status) Descriptor() ([]byte, []int) {
+	return file_opencensus_proto_trace_v1_trace_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *Status) GetCode() int32 {
+	if x != nil {
+		return x.Code
+	}
+	return 0
+}
+
+func (x *Status) GetMessage() string {
+	if x != nil {
+		return x.Message
+	}
+	return ""
+}
+
+// The value of an Attribute.
+type AttributeValue struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The type of the value.
+	//
+	// Types that are assignable to Value:
+	//	*AttributeValue_StringValue
+	//	*AttributeValue_IntValue
+	//	*AttributeValue_BoolValue
+	//	*AttributeValue_DoubleValue
+	Value isAttributeValue_Value `protobuf_oneof:"value"`
+}
+
+func (x *AttributeValue) Reset() {
+	*x = AttributeValue{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *AttributeValue) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*AttributeValue) ProtoMessage() {}
+
+func (x *AttributeValue) ProtoReflect() protoreflect.Message {
+	mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[2]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use AttributeValue.ProtoReflect.Descriptor instead.
+func (*AttributeValue) Descriptor() ([]byte, []int) {
+	return file_opencensus_proto_trace_v1_trace_proto_rawDescGZIP(), []int{2}
+}
+
+func (m *AttributeValue) GetValue() isAttributeValue_Value {
+	if m != nil {
+		return m.Value
+	}
+	return nil
+}
+
+func (x *AttributeValue) GetStringValue() *TruncatableString {
+	if x, ok := x.GetValue().(*AttributeValue_StringValue); ok {
+		return x.StringValue
+	}
+	return nil
+}
+
+func (x *AttributeValue) GetIntValue() int64 {
+	if x, ok := x.GetValue().(*AttributeValue_IntValue); ok {
+		return x.IntValue
+	}
+	return 0
+}
+
+func (x *AttributeValue) GetBoolValue() bool {
+	if x, ok := x.GetValue().(*AttributeValue_BoolValue); ok {
+		return x.BoolValue
+	}
+	return false
+}
+
+func (x *AttributeValue) GetDoubleValue() float64 {
+	if x, ok := x.GetValue().(*AttributeValue_DoubleValue); ok {
+		return x.DoubleValue
+	}
+	return 0
+}
+
+type isAttributeValue_Value interface {
+	isAttributeValue_Value()
+}
+
+type AttributeValue_StringValue struct {
+	// A string up to 256 bytes long.
+	StringValue *TruncatableString `protobuf:"bytes,1,opt,name=string_value,json=stringValue,proto3,oneof"`
+}
+
+type AttributeValue_IntValue struct {
+	// A 64-bit signed integer.
+	IntValue int64 `protobuf:"varint,2,opt,name=int_value,json=intValue,proto3,oneof"`
+}
+
+type AttributeValue_BoolValue struct {
+	// A Boolean value represented by `true` or `false`.
+	BoolValue bool `protobuf:"varint,3,opt,name=bool_value,json=boolValue,proto3,oneof"`
+}
+
+type AttributeValue_DoubleValue struct {
+	// A double value.
+	DoubleValue float64 `protobuf:"fixed64,4,opt,name=double_value,json=doubleValue,proto3,oneof"`
+}
+
+func (*AttributeValue_StringValue) isAttributeValue_Value() {}
+
+func (*AttributeValue_IntValue) isAttributeValue_Value() {}
+
+func (*AttributeValue_BoolValue) isAttributeValue_Value() {}
+
+func (*AttributeValue_DoubleValue) isAttributeValue_Value() {}
+
+// The call stack which originated this span.
+type StackTrace struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Stack frames in this stack trace.
+	StackFrames *StackTrace_StackFrames `protobuf:"bytes,1,opt,name=stack_frames,json=stackFrames,proto3" json:"stack_frames,omitempty"`
+	// The hash ID is used to conserve network bandwidth for duplicate
+	// stack traces within a single trace.
+	//
+	// Often multiple spans will have identical stack traces.
+	// The first occurrence of a stack trace should contain both
+	// `stack_frames` and a value in `stack_trace_hash_id`.
+	//
+	// Subsequent spans within the same request can refer
+	// to that stack trace by setting only `stack_trace_hash_id`.
+	//
+	// TODO: describe how to deal with the case where stack_trace_hash_id is
+	// zero because it was not set.
+	StackTraceHashId uint64 `protobuf:"varint,2,opt,name=stack_trace_hash_id,json=stackTraceHashId,proto3" json:"stack_trace_hash_id,omitempty"`
+}
+
+func (x *StackTrace) Reset() {
+	*x = StackTrace{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[3]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *StackTrace) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*StackTrace) ProtoMessage() {}
+
+func (x *StackTrace) ProtoReflect() protoreflect.Message {
+	mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[3]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use StackTrace.ProtoReflect.Descriptor instead.
+func (*StackTrace) Descriptor() ([]byte, []int) {
+	return file_opencensus_proto_trace_v1_trace_proto_rawDescGZIP(), []int{3}
+}
+
+func (x *StackTrace) GetStackFrames() *StackTrace_StackFrames {
+	if x != nil {
+		return x.StackFrames
+	}
+	return nil
+}
+
+func (x *StackTrace) GetStackTraceHashId() uint64 {
+	if x != nil {
+		return x.StackTraceHashId
+	}
+	return 0
+}
+
+// A description of a binary module.
+type Module struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// TODO: document the meaning of this field.
+	// For example: main binary, kernel modules, and dynamic libraries
+	// such as libc.so, sharedlib.so.
+	Module *TruncatableString `protobuf:"bytes,1,opt,name=module,proto3" json:"module,omitempty"`
+	// A unique identifier for the module, usually a hash of its
+	// contents.
+	BuildId *TruncatableString `protobuf:"bytes,2,opt,name=build_id,json=buildId,proto3" json:"build_id,omitempty"`
+}
+
+func (x *Module) Reset() {
+	*x = Module{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[4]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Module) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Module) ProtoMessage() {}
+
+func (x *Module) ProtoReflect() protoreflect.Message {
+	mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[4]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Module.ProtoReflect.Descriptor instead.
+func (*Module) Descriptor() ([]byte, []int) {
+	return file_opencensus_proto_trace_v1_trace_proto_rawDescGZIP(), []int{4}
+}
+
+func (x *Module) GetModule() *TruncatableString {
+	if x != nil {
+		return x.Module
+	}
+	return nil
+}
+
+func (x *Module) GetBuildId() *TruncatableString {
+	if x != nil {
+		return x.BuildId
+	}
+	return nil
+}
+
+// A string that might be shortened to a specified length.
+type TruncatableString struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The shortened string. For example, if the original string was 500 bytes long and
+	// the limit of the string was 128 bytes, then this value contains the first 128
+	// bytes of the 500-byte string. Note that truncation always happens on a
+	// character boundary, to ensure that a truncated string is still valid UTF-8.
+	// Because it may contain multi-byte characters, the size of the truncated string
+	// may be less than the truncation limit.
+	Value string `protobuf:"bytes,1,opt,name=value,proto3" json:"value,omitempty"`
+	// The number of bytes removed from the original string. If this
+	// value is 0, then the string was not shortened.
+	TruncatedByteCount int32 `protobuf:"varint,2,opt,name=truncated_byte_count,json=truncatedByteCount,proto3" json:"truncated_byte_count,omitempty"`
+}
+
+func (x *TruncatableString) Reset() {
+	*x = TruncatableString{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[5]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *TruncatableString) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*TruncatableString) ProtoMessage() {}
+
+func (x *TruncatableString) ProtoReflect() protoreflect.Message {
+	mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[5]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use TruncatableString.ProtoReflect.Descriptor instead.
+func (*TruncatableString) Descriptor() ([]byte, []int) {
+	return file_opencensus_proto_trace_v1_trace_proto_rawDescGZIP(), []int{5}
+}
+
+func (x *TruncatableString) GetValue() string {
+	if x != nil {
+		return x.Value
+	}
+	return ""
+}
+
+func (x *TruncatableString) GetTruncatedByteCount() int32 {
+	if x != nil {
+		return x.TruncatedByteCount
+	}
+	return 0
+}
+
+// This field conveys information about request position in multiple distributed tracing graphs.
+// It is a list of Tracestate.Entry with a maximum of 32 members in the list.
+//
+// See the https://github.com/w3c/distributed-tracing for more details about this field.
+type Span_Tracestate struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// A list of entries that represent the Tracestate.
+	Entries []*Span_Tracestate_Entry `protobuf:"bytes,1,rep,name=entries,proto3" json:"entries,omitempty"`
+}
+
+func (x *Span_Tracestate) Reset() {
+	*x = Span_Tracestate{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[6]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Span_Tracestate) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Span_Tracestate) ProtoMessage() {}
+
+func (x *Span_Tracestate) ProtoReflect() protoreflect.Message {
+	mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[6]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Span_Tracestate.ProtoReflect.Descriptor instead.
+func (*Span_Tracestate) Descriptor() ([]byte, []int) {
+	return file_opencensus_proto_trace_v1_trace_proto_rawDescGZIP(), []int{0, 0}
+}
+
+func (x *Span_Tracestate) GetEntries() []*Span_Tracestate_Entry {
+	if x != nil {
+		return x.Entries
+	}
+	return nil
+}
+
+// A set of attributes, each with a key and a value.
+type Span_Attributes struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The set of attributes. The value can be a string, an integer, a double
+	// or the Boolean values `true` or `false`. Note, global attributes like
+	// server name can be set as tags using resource API. Examples of attributes:
+	//
+	//     "/http/user_agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36"
+	//     "/http/server_latency": 300
+	//     "abc.com/myattribute": true
+	//     "abc.com/score": 10.239
+	AttributeMap map[string]*AttributeValue `protobuf:"bytes,1,rep,name=attribute_map,json=attributeMap,proto3" json:"attribute_map,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
+	// The number of attributes that were discarded. Attributes can be discarded
+	// because their keys are too long or because there are too many attributes.
+	// If this value is 0, then no attributes were dropped.
+	DroppedAttributesCount int32 `protobuf:"varint,2,opt,name=dropped_attributes_count,json=droppedAttributesCount,proto3" json:"dropped_attributes_count,omitempty"`
+}
+
+func (x *Span_Attributes) Reset() {
+	*x = Span_Attributes{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[7]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Span_Attributes) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Span_Attributes) ProtoMessage() {}
+
+func (x *Span_Attributes) ProtoReflect() protoreflect.Message {
+	mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[7]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Span_Attributes.ProtoReflect.Descriptor instead.
+func (*Span_Attributes) Descriptor() ([]byte, []int) {
+	return file_opencensus_proto_trace_v1_trace_proto_rawDescGZIP(), []int{0, 1}
+}
+
+func (x *Span_Attributes) GetAttributeMap() map[string]*AttributeValue {
+	if x != nil {
+		return x.AttributeMap
+	}
+	return nil
+}
+
+func (x *Span_Attributes) GetDroppedAttributesCount() int32 {
+	if x != nil {
+		return x.DroppedAttributesCount
+	}
+	return 0
+}
+
+// A time-stamped annotation or message event in the Span.
+type Span_TimeEvent struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The time the event occurred.
+	Time *timestamppb.Timestamp `protobuf:"bytes,1,opt,name=time,proto3" json:"time,omitempty"`
+	// A `TimeEvent` can contain either an `Annotation` object or a
+	// `MessageEvent` object, but not both.
+	//
+	// Types that are assignable to Value:
+	//	*Span_TimeEvent_Annotation_
+	//	*Span_TimeEvent_MessageEvent_
+	Value isSpan_TimeEvent_Value `protobuf_oneof:"value"`
+}
+
+func (x *Span_TimeEvent) Reset() {
+	*x = Span_TimeEvent{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[8]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Span_TimeEvent) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Span_TimeEvent) ProtoMessage() {}
+
+func (x *Span_TimeEvent) ProtoReflect() protoreflect.Message {
+	mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[8]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Span_TimeEvent.ProtoReflect.Descriptor instead.
+func (*Span_TimeEvent) Descriptor() ([]byte, []int) {
+	return file_opencensus_proto_trace_v1_trace_proto_rawDescGZIP(), []int{0, 2}
+}
+
+func (x *Span_TimeEvent) GetTime() *timestamppb.Timestamp {
+	if x != nil {
+		return x.Time
+	}
+	return nil
+}
+
+func (m *Span_TimeEvent) GetValue() isSpan_TimeEvent_Value {
+	if m != nil {
+		return m.Value
+	}
+	return nil
+}
+
+func (x *Span_TimeEvent) GetAnnotation() *Span_TimeEvent_Annotation {
+	if x, ok := x.GetValue().(*Span_TimeEvent_Annotation_); ok {
+		return x.Annotation
+	}
+	return nil
+}
+
+func (x *Span_TimeEvent) GetMessageEvent() *Span_TimeEvent_MessageEvent {
+	if x, ok := x.GetValue().(*Span_TimeEvent_MessageEvent_); ok {
+		return x.MessageEvent
+	}
+	return nil
+}
+
+type isSpan_TimeEvent_Value interface {
+	isSpan_TimeEvent_Value()
+}
+
+type Span_TimeEvent_Annotation_ struct {
+	// A text annotation with a set of attributes.
+	Annotation *Span_TimeEvent_Annotation `protobuf:"bytes,2,opt,name=annotation,proto3,oneof"`
+}
+
+type Span_TimeEvent_MessageEvent_ struct {
+	// An event describing a message sent/received between Spans.
+	MessageEvent *Span_TimeEvent_MessageEvent `protobuf:"bytes,3,opt,name=message_event,json=messageEvent,proto3,oneof"`
+}
+
+func (*Span_TimeEvent_Annotation_) isSpan_TimeEvent_Value() {}
+
+func (*Span_TimeEvent_MessageEvent_) isSpan_TimeEvent_Value() {}
+
+// A collection of `TimeEvent`s. A `TimeEvent` is a time-stamped annotation
+// on the span, consisting of either user-supplied key-value pairs, or
+// details of a message sent/received between Spans.
+type Span_TimeEvents struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// A collection of `TimeEvent`s.
+	TimeEvent []*Span_TimeEvent `protobuf:"bytes,1,rep,name=time_event,json=timeEvent,proto3" json:"time_event,omitempty"`
+	// The number of dropped annotations in all the included time events.
+	// If the value is 0, then no annotations were dropped.
+	DroppedAnnotationsCount int32 `protobuf:"varint,2,opt,name=dropped_annotations_count,json=droppedAnnotationsCount,proto3" json:"dropped_annotations_count,omitempty"`
+	// The number of dropped message events in all the included time events.
+	// If the value is 0, then no message events were dropped.
+	DroppedMessageEventsCount int32 `protobuf:"varint,3,opt,name=dropped_message_events_count,json=droppedMessageEventsCount,proto3" json:"dropped_message_events_count,omitempty"`
+}
+
+func (x *Span_TimeEvents) Reset() {
+	*x = Span_TimeEvents{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[9]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Span_TimeEvents) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Span_TimeEvents) ProtoMessage() {}
+
+func (x *Span_TimeEvents) ProtoReflect() protoreflect.Message {
+	mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[9]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Span_TimeEvents.ProtoReflect.Descriptor instead.
+func (*Span_TimeEvents) Descriptor() ([]byte, []int) {
+	return file_opencensus_proto_trace_v1_trace_proto_rawDescGZIP(), []int{0, 3}
+}
+
+func (x *Span_TimeEvents) GetTimeEvent() []*Span_TimeEvent {
+	if x != nil {
+		return x.TimeEvent
+	}
+	return nil
+}
+
+func (x *Span_TimeEvents) GetDroppedAnnotationsCount() int32 {
+	if x != nil {
+		return x.DroppedAnnotationsCount
+	}
+	return 0
+}
+
+func (x *Span_TimeEvents) GetDroppedMessageEventsCount() int32 {
+	if x != nil {
+		return x.DroppedMessageEventsCount
+	}
+	return 0
+}
+
+// A pointer from the current span to another span in the same trace or in a
+// different trace. For example, this can be used in batching operations,
+// where a single batch handler processes multiple requests from different
+// traces or when the handler receives a request from a different project.
+type Span_Link struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// A unique identifier of a trace that this linked span is part of. The ID is a
+	// 16-byte array.
+	TraceId []byte `protobuf:"bytes,1,opt,name=trace_id,json=traceId,proto3" json:"trace_id,omitempty"`
+	// A unique identifier for the linked span. The ID is an 8-byte array.
+	SpanId []byte `protobuf:"bytes,2,opt,name=span_id,json=spanId,proto3" json:"span_id,omitempty"`
+	// The relationship of the current span relative to the linked span.
+	Type Span_Link_Type `protobuf:"varint,3,opt,name=type,proto3,enum=opencensus.proto.trace.v1.Span_Link_Type" json:"type,omitempty"`
+	// A set of attributes on the link.
+	Attributes *Span_Attributes `protobuf:"bytes,4,opt,name=attributes,proto3" json:"attributes,omitempty"`
+	// The Tracestate associated with the link.
+	Tracestate *Span_Tracestate `protobuf:"bytes,5,opt,name=tracestate,proto3" json:"tracestate,omitempty"`
+}
+
+func (x *Span_Link) Reset() {
+	*x = Span_Link{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[10]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Span_Link) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Span_Link) ProtoMessage() {}
+
+func (x *Span_Link) ProtoReflect() protoreflect.Message {
+	mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[10]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Span_Link.ProtoReflect.Descriptor instead.
+func (*Span_Link) Descriptor() ([]byte, []int) {
+	return file_opencensus_proto_trace_v1_trace_proto_rawDescGZIP(), []int{0, 4}
+}
+
+func (x *Span_Link) GetTraceId() []byte {
+	if x != nil {
+		return x.TraceId
+	}
+	return nil
+}
+
+func (x *Span_Link) GetSpanId() []byte {
+	if x != nil {
+		return x.SpanId
+	}
+	return nil
+}
+
+func (x *Span_Link) GetType() Span_Link_Type {
+	if x != nil {
+		return x.Type
+	}
+	return Span_Link_TYPE_UNSPECIFIED
+}
+
+func (x *Span_Link) GetAttributes() *Span_Attributes {
+	if x != nil {
+		return x.Attributes
+	}
+	return nil
+}
+
+func (x *Span_Link) GetTracestate() *Span_Tracestate {
+	if x != nil {
+		return x.Tracestate
+	}
+	return nil
+}
+
+// A collection of links, which are references from this span to a span
+// in the same or different trace.
+type Span_Links struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// A collection of links.
+	Link []*Span_Link `protobuf:"bytes,1,rep,name=link,proto3" json:"link,omitempty"`
+	// The number of dropped links after the maximum size was enforced. If
+	// this value is 0, then no links were dropped.
+	DroppedLinksCount int32 `protobuf:"varint,2,opt,name=dropped_links_count,json=droppedLinksCount,proto3" json:"dropped_links_count,omitempty"`
+}
+
+func (x *Span_Links) Reset() {
+	*x = Span_Links{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[11]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Span_Links) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Span_Links) ProtoMessage() {}
+
+func (x *Span_Links) ProtoReflect() protoreflect.Message {
+	mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[11]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Span_Links.ProtoReflect.Descriptor instead.
+func (*Span_Links) Descriptor() ([]byte, []int) {
+	return file_opencensus_proto_trace_v1_trace_proto_rawDescGZIP(), []int{0, 5}
+}
+
+func (x *Span_Links) GetLink() []*Span_Link {
+	if x != nil {
+		return x.Link
+	}
+	return nil
+}
+
+func (x *Span_Links) GetDroppedLinksCount() int32 {
+	if x != nil {
+		return x.DroppedLinksCount
+	}
+	return 0
+}
+
+type Span_Tracestate_Entry struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The key must begin with a lowercase letter, and can only contain
+	// lowercase letters 'a'-'z', digits '0'-'9', underscores '_', dashes
+	// '-', asterisks '*', and forward slashes '/'.
+	Key string `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+	// The value is opaque string up to 256 characters printable ASCII
+	// RFC0020 characters (i.e., the range 0x20 to 0x7E) except ',' and '='.
+	// Note that this also excludes tabs, newlines, carriage returns, etc.
+	Value string `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"`
+}
+
+func (x *Span_Tracestate_Entry) Reset() {
+	*x = Span_Tracestate_Entry{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[12]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Span_Tracestate_Entry) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Span_Tracestate_Entry) ProtoMessage() {}
+
+func (x *Span_Tracestate_Entry) ProtoReflect() protoreflect.Message {
+	mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[12]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Span_Tracestate_Entry.ProtoReflect.Descriptor instead.
+func (*Span_Tracestate_Entry) Descriptor() ([]byte, []int) {
+	return file_opencensus_proto_trace_v1_trace_proto_rawDescGZIP(), []int{0, 0, 0}
+}
+
+func (x *Span_Tracestate_Entry) GetKey() string {
+	if x != nil {
+		return x.Key
+	}
+	return ""
+}
+
+func (x *Span_Tracestate_Entry) GetValue() string {
+	if x != nil {
+		return x.Value
+	}
+	return ""
+}
+
+// A text annotation with a set of attributes.
+type Span_TimeEvent_Annotation struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// A user-supplied message describing the event.
+	Description *TruncatableString `protobuf:"bytes,1,opt,name=description,proto3" json:"description,omitempty"`
+	// A set of attributes on the annotation.
+	Attributes *Span_Attributes `protobuf:"bytes,2,opt,name=attributes,proto3" json:"attributes,omitempty"`
+}
+
+func (x *Span_TimeEvent_Annotation) Reset() {
+	*x = Span_TimeEvent_Annotation{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[14]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Span_TimeEvent_Annotation) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Span_TimeEvent_Annotation) ProtoMessage() {}
+
+func (x *Span_TimeEvent_Annotation) ProtoReflect() protoreflect.Message {
+	mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[14]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Span_TimeEvent_Annotation.ProtoReflect.Descriptor instead.
+func (*Span_TimeEvent_Annotation) Descriptor() ([]byte, []int) {
+	return file_opencensus_proto_trace_v1_trace_proto_rawDescGZIP(), []int{0, 2, 0}
+}
+
+func (x *Span_TimeEvent_Annotation) GetDescription() *TruncatableString {
+	if x != nil {
+		return x.Description
+	}
+	return nil
+}
+
+func (x *Span_TimeEvent_Annotation) GetAttributes() *Span_Attributes {
+	if x != nil {
+		return x.Attributes
+	}
+	return nil
+}
+
+// An event describing a message sent/received between Spans.
+type Span_TimeEvent_MessageEvent struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The type of MessageEvent. Indicates whether the message was sent or
+	// received.
+	Type Span_TimeEvent_MessageEvent_Type `protobuf:"varint,1,opt,name=type,proto3,enum=opencensus.proto.trace.v1.Span_TimeEvent_MessageEvent_Type" json:"type,omitempty"`
+	// An identifier for the MessageEvent's message that can be used to match
+	// SENT and RECEIVED MessageEvents. For example, this field could
+	// represent a sequence ID for a streaming RPC. It is recommended to be
+	// unique within a Span.
+	Id uint64 `protobuf:"varint,2,opt,name=id,proto3" json:"id,omitempty"`
+	// The number of uncompressed bytes sent or received.
+	UncompressedSize uint64 `protobuf:"varint,3,opt,name=uncompressed_size,json=uncompressedSize,proto3" json:"uncompressed_size,omitempty"`
+	// The number of compressed bytes sent or received. If zero, assumed to
+	// be the same size as uncompressed.
+	CompressedSize uint64 `protobuf:"varint,4,opt,name=compressed_size,json=compressedSize,proto3" json:"compressed_size,omitempty"`
+}
+
+func (x *Span_TimeEvent_MessageEvent) Reset() {
+	*x = Span_TimeEvent_MessageEvent{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[15]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Span_TimeEvent_MessageEvent) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Span_TimeEvent_MessageEvent) ProtoMessage() {}
+
+func (x *Span_TimeEvent_MessageEvent) ProtoReflect() protoreflect.Message {
+	mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[15]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Span_TimeEvent_MessageEvent.ProtoReflect.Descriptor instead.
+func (*Span_TimeEvent_MessageEvent) Descriptor() ([]byte, []int) {
+	return file_opencensus_proto_trace_v1_trace_proto_rawDescGZIP(), []int{0, 2, 1}
+}
+
+func (x *Span_TimeEvent_MessageEvent) GetType() Span_TimeEvent_MessageEvent_Type {
+	if x != nil {
+		return x.Type
+	}
+	return Span_TimeEvent_MessageEvent_TYPE_UNSPECIFIED
+}
+
+func (x *Span_TimeEvent_MessageEvent) GetId() uint64 {
+	if x != nil {
+		return x.Id
+	}
+	return 0
+}
+
+func (x *Span_TimeEvent_MessageEvent) GetUncompressedSize() uint64 {
+	if x != nil {
+		return x.UncompressedSize
+	}
+	return 0
+}
+
+func (x *Span_TimeEvent_MessageEvent) GetCompressedSize() uint64 {
+	if x != nil {
+		return x.CompressedSize
+	}
+	return 0
+}
+
+// A single stack frame in a stack trace.
+type StackTrace_StackFrame struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The fully-qualified name that uniquely identifies the function or
+	// method that is active in this frame.
+	FunctionName *TruncatableString `protobuf:"bytes,1,opt,name=function_name,json=functionName,proto3" json:"function_name,omitempty"`
+	// An un-mangled function name, if `function_name` is
+	// [mangled](http://www.avabodh.com/cxxin/namemangling.html). The name can
+	// be fully qualified.
+	OriginalFunctionName *TruncatableString `protobuf:"bytes,2,opt,name=original_function_name,json=originalFunctionName,proto3" json:"original_function_name,omitempty"`
+	// The name of the source file where the function call appears.
+	FileName *TruncatableString `protobuf:"bytes,3,opt,name=file_name,json=fileName,proto3" json:"file_name,omitempty"`
+	// The line number in `file_name` where the function call appears.
+	LineNumber int64 `protobuf:"varint,4,opt,name=line_number,json=lineNumber,proto3" json:"line_number,omitempty"`
+	// The column number where the function call appears, if available.
+	// This is important in JavaScript because of its anonymous functions.
+	ColumnNumber int64 `protobuf:"varint,5,opt,name=column_number,json=columnNumber,proto3" json:"column_number,omitempty"`
+	// The binary module from where the code was loaded.
+	LoadModule *Module `protobuf:"bytes,6,opt,name=load_module,json=loadModule,proto3" json:"load_module,omitempty"`
+	// The version of the deployed source code.
+	SourceVersion *TruncatableString `protobuf:"bytes,7,opt,name=source_version,json=sourceVersion,proto3" json:"source_version,omitempty"`
+}
+
+func (x *StackTrace_StackFrame) Reset() {
+	*x = StackTrace_StackFrame{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[16]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *StackTrace_StackFrame) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*StackTrace_StackFrame) ProtoMessage() {}
+
+func (x *StackTrace_StackFrame) ProtoReflect() protoreflect.Message {
+	mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[16]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use StackTrace_StackFrame.ProtoReflect.Descriptor instead.
+func (*StackTrace_StackFrame) Descriptor() ([]byte, []int) {
+	return file_opencensus_proto_trace_v1_trace_proto_rawDescGZIP(), []int{3, 0}
+}
+
+func (x *StackTrace_StackFrame) GetFunctionName() *TruncatableString {
+	if x != nil {
+		return x.FunctionName
+	}
+	return nil
+}
+
+func (x *StackTrace_StackFrame) GetOriginalFunctionName() *TruncatableString {
+	if x != nil {
+		return x.OriginalFunctionName
+	}
+	return nil
+}
+
+func (x *StackTrace_StackFrame) GetFileName() *TruncatableString {
+	if x != nil {
+		return x.FileName
+	}
+	return nil
+}
+
+func (x *StackTrace_StackFrame) GetLineNumber() int64 {
+	if x != nil {
+		return x.LineNumber
+	}
+	return 0
+}
+
+func (x *StackTrace_StackFrame) GetColumnNumber() int64 {
+	if x != nil {
+		return x.ColumnNumber
+	}
+	return 0
+}
+
+func (x *StackTrace_StackFrame) GetLoadModule() *Module {
+	if x != nil {
+		return x.LoadModule
+	}
+	return nil
+}
+
+func (x *StackTrace_StackFrame) GetSourceVersion() *TruncatableString {
+	if x != nil {
+		return x.SourceVersion
+	}
+	return nil
+}
+
+// A collection of stack frames, which can be truncated.
+type StackTrace_StackFrames struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Stack frames in this call stack.
+	Frame []*StackTrace_StackFrame `protobuf:"bytes,1,rep,name=frame,proto3" json:"frame,omitempty"`
+	// The number of stack frames that were dropped because there
+	// were too many stack frames.
+	// If this value is 0, then no stack frames were dropped.
+	DroppedFramesCount int32 `protobuf:"varint,2,opt,name=dropped_frames_count,json=droppedFramesCount,proto3" json:"dropped_frames_count,omitempty"`
+}
+
+func (x *StackTrace_StackFrames) Reset() {
+	*x = StackTrace_StackFrames{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[17]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *StackTrace_StackFrames) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*StackTrace_StackFrames) ProtoMessage() {}
+
+func (x *StackTrace_StackFrames) ProtoReflect() protoreflect.Message {
+	mi := &file_opencensus_proto_trace_v1_trace_proto_msgTypes[17]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use StackTrace_StackFrames.ProtoReflect.Descriptor instead.
+func (*StackTrace_StackFrames) Descriptor() ([]byte, []int) {
+	return file_opencensus_proto_trace_v1_trace_proto_rawDescGZIP(), []int{3, 1}
+}
+
+func (x *StackTrace_StackFrames) GetFrame() []*StackTrace_StackFrame {
+	if x != nil {
+		return x.Frame
+	}
+	return nil
+}
+
+func (x *StackTrace_StackFrames) GetDroppedFramesCount() int32 {
+	if x != nil {
+		return x.DroppedFramesCount
+	}
+	return 0
+}
+
+var File_opencensus_proto_trace_v1_trace_proto protoreflect.FileDescriptor
+
+var file_opencensus_proto_trace_v1_trace_proto_rawDesc = []byte{
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+}
+
+var (
+	file_opencensus_proto_trace_v1_trace_proto_rawDescOnce sync.Once
+	file_opencensus_proto_trace_v1_trace_proto_rawDescData = file_opencensus_proto_trace_v1_trace_proto_rawDesc
+)
+
+func file_opencensus_proto_trace_v1_trace_proto_rawDescGZIP() []byte {
+	file_opencensus_proto_trace_v1_trace_proto_rawDescOnce.Do(func() {
+		file_opencensus_proto_trace_v1_trace_proto_rawDescData = protoimpl.X.CompressGZIP(file_opencensus_proto_trace_v1_trace_proto_rawDescData)
+	})
+	return file_opencensus_proto_trace_v1_trace_proto_rawDescData
+}
+
+var file_opencensus_proto_trace_v1_trace_proto_enumTypes = make([]protoimpl.EnumInfo, 3)
+var file_opencensus_proto_trace_v1_trace_proto_msgTypes = make([]protoimpl.MessageInfo, 18)
+var file_opencensus_proto_trace_v1_trace_proto_goTypes = []interface{}{
+	(Span_SpanKind)(0),                    // 0: opencensus.proto.trace.v1.Span.SpanKind
+	(Span_TimeEvent_MessageEvent_Type)(0), // 1: opencensus.proto.trace.v1.Span.TimeEvent.MessageEvent.Type
+	(Span_Link_Type)(0),                   // 2: opencensus.proto.trace.v1.Span.Link.Type
+	(*Span)(nil),                          // 3: opencensus.proto.trace.v1.Span
+	(*Status)(nil),                        // 4: opencensus.proto.trace.v1.Status
+	(*AttributeValue)(nil),                // 5: opencensus.proto.trace.v1.AttributeValue
+	(*StackTrace)(nil),                    // 6: opencensus.proto.trace.v1.StackTrace
+	(*Module)(nil),                        // 7: opencensus.proto.trace.v1.Module
+	(*TruncatableString)(nil),             // 8: opencensus.proto.trace.v1.TruncatableString
+	(*Span_Tracestate)(nil),               // 9: opencensus.proto.trace.v1.Span.Tracestate
+	(*Span_Attributes)(nil),               // 10: opencensus.proto.trace.v1.Span.Attributes
+	(*Span_TimeEvent)(nil),                // 11: opencensus.proto.trace.v1.Span.TimeEvent
+	(*Span_TimeEvents)(nil),               // 12: opencensus.proto.trace.v1.Span.TimeEvents
+	(*Span_Link)(nil),                     // 13: opencensus.proto.trace.v1.Span.Link
+	(*Span_Links)(nil),                    // 14: opencensus.proto.trace.v1.Span.Links
+	(*Span_Tracestate_Entry)(nil),         // 15: opencensus.proto.trace.v1.Span.Tracestate.Entry
+	nil,                                   // 16: opencensus.proto.trace.v1.Span.Attributes.AttributeMapEntry
+	(*Span_TimeEvent_Annotation)(nil),     // 17: opencensus.proto.trace.v1.Span.TimeEvent.Annotation
+	(*Span_TimeEvent_MessageEvent)(nil),   // 18: opencensus.proto.trace.v1.Span.TimeEvent.MessageEvent
+	(*StackTrace_StackFrame)(nil),         // 19: opencensus.proto.trace.v1.StackTrace.StackFrame
+	(*StackTrace_StackFrames)(nil),        // 20: opencensus.proto.trace.v1.StackTrace.StackFrames
+	(*timestamppb.Timestamp)(nil),         // 21: google.protobuf.Timestamp
+	(*v1.Resource)(nil),                   // 22: opencensus.proto.resource.v1.Resource
+	(*wrapperspb.BoolValue)(nil),          // 23: google.protobuf.BoolValue
+	(*wrapperspb.UInt32Value)(nil),        // 24: google.protobuf.UInt32Value
+}
+var file_opencensus_proto_trace_v1_trace_proto_depIdxs = []int32{
+	9,  // 0: opencensus.proto.trace.v1.Span.tracestate:type_name -> opencensus.proto.trace.v1.Span.Tracestate
+	8,  // 1: opencensus.proto.trace.v1.Span.name:type_name -> opencensus.proto.trace.v1.TruncatableString
+	0,  // 2: opencensus.proto.trace.v1.Span.kind:type_name -> opencensus.proto.trace.v1.Span.SpanKind
+	21, // 3: opencensus.proto.trace.v1.Span.start_time:type_name -> google.protobuf.Timestamp
+	21, // 4: opencensus.proto.trace.v1.Span.end_time:type_name -> google.protobuf.Timestamp
+	10, // 5: opencensus.proto.trace.v1.Span.attributes:type_name -> opencensus.proto.trace.v1.Span.Attributes
+	6,  // 6: opencensus.proto.trace.v1.Span.stack_trace:type_name -> opencensus.proto.trace.v1.StackTrace
+	12, // 7: opencensus.proto.trace.v1.Span.time_events:type_name -> opencensus.proto.trace.v1.Span.TimeEvents
+	14, // 8: opencensus.proto.trace.v1.Span.links:type_name -> opencensus.proto.trace.v1.Span.Links
+	4,  // 9: opencensus.proto.trace.v1.Span.status:type_name -> opencensus.proto.trace.v1.Status
+	22, // 10: opencensus.proto.trace.v1.Span.resource:type_name -> opencensus.proto.resource.v1.Resource
+	23, // 11: opencensus.proto.trace.v1.Span.same_process_as_parent_span:type_name -> google.protobuf.BoolValue
+	24, // 12: opencensus.proto.trace.v1.Span.child_span_count:type_name -> google.protobuf.UInt32Value
+	8,  // 13: opencensus.proto.trace.v1.AttributeValue.string_value:type_name -> opencensus.proto.trace.v1.TruncatableString
+	20, // 14: opencensus.proto.trace.v1.StackTrace.stack_frames:type_name -> opencensus.proto.trace.v1.StackTrace.StackFrames
+	8,  // 15: opencensus.proto.trace.v1.Module.module:type_name -> opencensus.proto.trace.v1.TruncatableString
+	8,  // 16: opencensus.proto.trace.v1.Module.build_id:type_name -> opencensus.proto.trace.v1.TruncatableString
+	15, // 17: opencensus.proto.trace.v1.Span.Tracestate.entries:type_name -> opencensus.proto.trace.v1.Span.Tracestate.Entry
+	16, // 18: opencensus.proto.trace.v1.Span.Attributes.attribute_map:type_name -> opencensus.proto.trace.v1.Span.Attributes.AttributeMapEntry
+	21, // 19: opencensus.proto.trace.v1.Span.TimeEvent.time:type_name -> google.protobuf.Timestamp
+	17, // 20: opencensus.proto.trace.v1.Span.TimeEvent.annotation:type_name -> opencensus.proto.trace.v1.Span.TimeEvent.Annotation
+	18, // 21: opencensus.proto.trace.v1.Span.TimeEvent.message_event:type_name -> opencensus.proto.trace.v1.Span.TimeEvent.MessageEvent
+	11, // 22: opencensus.proto.trace.v1.Span.TimeEvents.time_event:type_name -> opencensus.proto.trace.v1.Span.TimeEvent
+	2,  // 23: opencensus.proto.trace.v1.Span.Link.type:type_name -> opencensus.proto.trace.v1.Span.Link.Type
+	10, // 24: opencensus.proto.trace.v1.Span.Link.attributes:type_name -> opencensus.proto.trace.v1.Span.Attributes
+	9,  // 25: opencensus.proto.trace.v1.Span.Link.tracestate:type_name -> opencensus.proto.trace.v1.Span.Tracestate
+	13, // 26: opencensus.proto.trace.v1.Span.Links.link:type_name -> opencensus.proto.trace.v1.Span.Link
+	5,  // 27: opencensus.proto.trace.v1.Span.Attributes.AttributeMapEntry.value:type_name -> opencensus.proto.trace.v1.AttributeValue
+	8,  // 28: opencensus.proto.trace.v1.Span.TimeEvent.Annotation.description:type_name -> opencensus.proto.trace.v1.TruncatableString
+	10, // 29: opencensus.proto.trace.v1.Span.TimeEvent.Annotation.attributes:type_name -> opencensus.proto.trace.v1.Span.Attributes
+	1,  // 30: opencensus.proto.trace.v1.Span.TimeEvent.MessageEvent.type:type_name -> opencensus.proto.trace.v1.Span.TimeEvent.MessageEvent.Type
+	8,  // 31: opencensus.proto.trace.v1.StackTrace.StackFrame.function_name:type_name -> opencensus.proto.trace.v1.TruncatableString
+	8,  // 32: opencensus.proto.trace.v1.StackTrace.StackFrame.original_function_name:type_name -> opencensus.proto.trace.v1.TruncatableString
+	8,  // 33: opencensus.proto.trace.v1.StackTrace.StackFrame.file_name:type_name -> opencensus.proto.trace.v1.TruncatableString
+	7,  // 34: opencensus.proto.trace.v1.StackTrace.StackFrame.load_module:type_name -> opencensus.proto.trace.v1.Module
+	8,  // 35: opencensus.proto.trace.v1.StackTrace.StackFrame.source_version:type_name -> opencensus.proto.trace.v1.TruncatableString
+	19, // 36: opencensus.proto.trace.v1.StackTrace.StackFrames.frame:type_name -> opencensus.proto.trace.v1.StackTrace.StackFrame
+	37, // [37:37] is the sub-list for method output_type
+	37, // [37:37] is the sub-list for method input_type
+	37, // [37:37] is the sub-list for extension type_name
+	37, // [37:37] is the sub-list for extension extendee
+	0,  // [0:37] is the sub-list for field type_name
+}
+
+func init() { file_opencensus_proto_trace_v1_trace_proto_init() }
+func file_opencensus_proto_trace_v1_trace_proto_init() {
+	if File_opencensus_proto_trace_v1_trace_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_opencensus_proto_trace_v1_trace_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Span); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_opencensus_proto_trace_v1_trace_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Status); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_opencensus_proto_trace_v1_trace_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*AttributeValue); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_opencensus_proto_trace_v1_trace_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*StackTrace); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_opencensus_proto_trace_v1_trace_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Module); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_opencensus_proto_trace_v1_trace_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*TruncatableString); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_opencensus_proto_trace_v1_trace_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Span_Tracestate); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_opencensus_proto_trace_v1_trace_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Span_Attributes); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_opencensus_proto_trace_v1_trace_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Span_TimeEvent); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_opencensus_proto_trace_v1_trace_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Span_TimeEvents); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_opencensus_proto_trace_v1_trace_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Span_Link); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_opencensus_proto_trace_v1_trace_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Span_Links); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_opencensus_proto_trace_v1_trace_proto_msgTypes[12].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Span_Tracestate_Entry); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_opencensus_proto_trace_v1_trace_proto_msgTypes[14].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Span_TimeEvent_Annotation); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_opencensus_proto_trace_v1_trace_proto_msgTypes[15].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Span_TimeEvent_MessageEvent); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_opencensus_proto_trace_v1_trace_proto_msgTypes[16].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*StackTrace_StackFrame); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_opencensus_proto_trace_v1_trace_proto_msgTypes[17].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*StackTrace_StackFrames); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	file_opencensus_proto_trace_v1_trace_proto_msgTypes[2].OneofWrappers = []interface{}{
+		(*AttributeValue_StringValue)(nil),
+		(*AttributeValue_IntValue)(nil),
+		(*AttributeValue_BoolValue)(nil),
+		(*AttributeValue_DoubleValue)(nil),
+	}
+	file_opencensus_proto_trace_v1_trace_proto_msgTypes[8].OneofWrappers = []interface{}{
+		(*Span_TimeEvent_Annotation_)(nil),
+		(*Span_TimeEvent_MessageEvent_)(nil),
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_opencensus_proto_trace_v1_trace_proto_rawDesc,
+			NumEnums:      3,
+			NumMessages:   18,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_opencensus_proto_trace_v1_trace_proto_goTypes,
+		DependencyIndexes: file_opencensus_proto_trace_v1_trace_proto_depIdxs,
+		EnumInfos:         file_opencensus_proto_trace_v1_trace_proto_enumTypes,
+		MessageInfos:      file_opencensus_proto_trace_v1_trace_proto_msgTypes,
+	}.Build()
+	File_opencensus_proto_trace_v1_trace_proto = out.File
+	file_opencensus_proto_trace_v1_trace_proto_rawDesc = nil
+	file_opencensus_proto_trace_v1_trace_proto_goTypes = nil
+	file_opencensus_proto_trace_v1_trace_proto_depIdxs = nil
+}
diff --git a/vendor/github.com/census-instrumentation/opencensus-proto/gen-go/trace/v1/trace_config.pb.go b/vendor/github.com/census-instrumentation/opencensus-proto/gen-go/trace/v1/trace_config.pb.go
new file mode 100644
index 000000000..ee62b2e35
--- /dev/null
+++ b/vendor/github.com/census-instrumentation/opencensus-proto/gen-go/trace/v1/trace_config.pb.go
@@ -0,0 +1,555 @@
+// Copyright 2018, OpenCensus 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.
+
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.26.0
+// 	protoc        v3.17.3
+// source: opencensus/proto/trace/v1/trace_config.proto
+
+package v1
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+// How spans should be sampled:
+// - Always off
+// - Always on
+// - Always follow the parent Span's decision (off if no parent).
+type ConstantSampler_ConstantDecision int32
+
+const (
+	ConstantSampler_ALWAYS_OFF    ConstantSampler_ConstantDecision = 0
+	ConstantSampler_ALWAYS_ON     ConstantSampler_ConstantDecision = 1
+	ConstantSampler_ALWAYS_PARENT ConstantSampler_ConstantDecision = 2
+)
+
+// Enum value maps for ConstantSampler_ConstantDecision.
+var (
+	ConstantSampler_ConstantDecision_name = map[int32]string{
+		0: "ALWAYS_OFF",
+		1: "ALWAYS_ON",
+		2: "ALWAYS_PARENT",
+	}
+	ConstantSampler_ConstantDecision_value = map[string]int32{
+		"ALWAYS_OFF":    0,
+		"ALWAYS_ON":     1,
+		"ALWAYS_PARENT": 2,
+	}
+)
+
+func (x ConstantSampler_ConstantDecision) Enum() *ConstantSampler_ConstantDecision {
+	p := new(ConstantSampler_ConstantDecision)
+	*p = x
+	return p
+}
+
+func (x ConstantSampler_ConstantDecision) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (ConstantSampler_ConstantDecision) Descriptor() protoreflect.EnumDescriptor {
+	return file_opencensus_proto_trace_v1_trace_config_proto_enumTypes[0].Descriptor()
+}
+
+func (ConstantSampler_ConstantDecision) Type() protoreflect.EnumType {
+	return &file_opencensus_proto_trace_v1_trace_config_proto_enumTypes[0]
+}
+
+func (x ConstantSampler_ConstantDecision) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use ConstantSampler_ConstantDecision.Descriptor instead.
+func (ConstantSampler_ConstantDecision) EnumDescriptor() ([]byte, []int) {
+	return file_opencensus_proto_trace_v1_trace_config_proto_rawDescGZIP(), []int{2, 0}
+}
+
+// Global configuration of the trace service. All fields must be specified, or
+// the default (zero) values will be used for each type.
+type TraceConfig struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The global default sampler used to make decisions on span sampling.
+	//
+	// Types that are assignable to Sampler:
+	//	*TraceConfig_ProbabilitySampler
+	//	*TraceConfig_ConstantSampler
+	//	*TraceConfig_RateLimitingSampler
+	Sampler isTraceConfig_Sampler `protobuf_oneof:"sampler"`
+	// The global default max number of attributes per span.
+	MaxNumberOfAttributes int64 `protobuf:"varint,4,opt,name=max_number_of_attributes,json=maxNumberOfAttributes,proto3" json:"max_number_of_attributes,omitempty"`
+	// The global default max number of annotation events per span.
+	MaxNumberOfAnnotations int64 `protobuf:"varint,5,opt,name=max_number_of_annotations,json=maxNumberOfAnnotations,proto3" json:"max_number_of_annotations,omitempty"`
+	// The global default max number of message events per span.
+	MaxNumberOfMessageEvents int64 `protobuf:"varint,6,opt,name=max_number_of_message_events,json=maxNumberOfMessageEvents,proto3" json:"max_number_of_message_events,omitempty"`
+	// The global default max number of link entries per span.
+	MaxNumberOfLinks int64 `protobuf:"varint,7,opt,name=max_number_of_links,json=maxNumberOfLinks,proto3" json:"max_number_of_links,omitempty"`
+}
+
+func (x *TraceConfig) Reset() {
+	*x = TraceConfig{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_opencensus_proto_trace_v1_trace_config_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *TraceConfig) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*TraceConfig) ProtoMessage() {}
+
+func (x *TraceConfig) ProtoReflect() protoreflect.Message {
+	mi := &file_opencensus_proto_trace_v1_trace_config_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use TraceConfig.ProtoReflect.Descriptor instead.
+func (*TraceConfig) Descriptor() ([]byte, []int) {
+	return file_opencensus_proto_trace_v1_trace_config_proto_rawDescGZIP(), []int{0}
+}
+
+func (m *TraceConfig) GetSampler() isTraceConfig_Sampler {
+	if m != nil {
+		return m.Sampler
+	}
+	return nil
+}
+
+func (x *TraceConfig) GetProbabilitySampler() *ProbabilitySampler {
+	if x, ok := x.GetSampler().(*TraceConfig_ProbabilitySampler); ok {
+		return x.ProbabilitySampler
+	}
+	return nil
+}
+
+func (x *TraceConfig) GetConstantSampler() *ConstantSampler {
+	if x, ok := x.GetSampler().(*TraceConfig_ConstantSampler); ok {
+		return x.ConstantSampler
+	}
+	return nil
+}
+
+func (x *TraceConfig) GetRateLimitingSampler() *RateLimitingSampler {
+	if x, ok := x.GetSampler().(*TraceConfig_RateLimitingSampler); ok {
+		return x.RateLimitingSampler
+	}
+	return nil
+}
+
+func (x *TraceConfig) GetMaxNumberOfAttributes() int64 {
+	if x != nil {
+		return x.MaxNumberOfAttributes
+	}
+	return 0
+}
+
+func (x *TraceConfig) GetMaxNumberOfAnnotations() int64 {
+	if x != nil {
+		return x.MaxNumberOfAnnotations
+	}
+	return 0
+}
+
+func (x *TraceConfig) GetMaxNumberOfMessageEvents() int64 {
+	if x != nil {
+		return x.MaxNumberOfMessageEvents
+	}
+	return 0
+}
+
+func (x *TraceConfig) GetMaxNumberOfLinks() int64 {
+	if x != nil {
+		return x.MaxNumberOfLinks
+	}
+	return 0
+}
+
+type isTraceConfig_Sampler interface {
+	isTraceConfig_Sampler()
+}
+
+type TraceConfig_ProbabilitySampler struct {
+	ProbabilitySampler *ProbabilitySampler `protobuf:"bytes,1,opt,name=probability_sampler,json=probabilitySampler,proto3,oneof"`
+}
+
+type TraceConfig_ConstantSampler struct {
+	ConstantSampler *ConstantSampler `protobuf:"bytes,2,opt,name=constant_sampler,json=constantSampler,proto3,oneof"`
+}
+
+type TraceConfig_RateLimitingSampler struct {
+	RateLimitingSampler *RateLimitingSampler `protobuf:"bytes,3,opt,name=rate_limiting_sampler,json=rateLimitingSampler,proto3,oneof"`
+}
+
+func (*TraceConfig_ProbabilitySampler) isTraceConfig_Sampler() {}
+
+func (*TraceConfig_ConstantSampler) isTraceConfig_Sampler() {}
+
+func (*TraceConfig_RateLimitingSampler) isTraceConfig_Sampler() {}
+
+// Sampler that tries to uniformly sample traces with a given probability.
+// The probability of sampling a trace is equal to that of the specified probability.
+type ProbabilitySampler struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The desired probability of sampling. Must be within [0.0, 1.0].
+	SamplingProbability float64 `protobuf:"fixed64,1,opt,name=samplingProbability,proto3" json:"samplingProbability,omitempty"`
+}
+
+func (x *ProbabilitySampler) Reset() {
+	*x = ProbabilitySampler{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_opencensus_proto_trace_v1_trace_config_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ProbabilitySampler) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ProbabilitySampler) ProtoMessage() {}
+
+func (x *ProbabilitySampler) ProtoReflect() protoreflect.Message {
+	mi := &file_opencensus_proto_trace_v1_trace_config_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ProbabilitySampler.ProtoReflect.Descriptor instead.
+func (*ProbabilitySampler) Descriptor() ([]byte, []int) {
+	return file_opencensus_proto_trace_v1_trace_config_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *ProbabilitySampler) GetSamplingProbability() float64 {
+	if x != nil {
+		return x.SamplingProbability
+	}
+	return 0
+}
+
+// Sampler that always makes a constant decision on span sampling.
+type ConstantSampler struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Decision ConstantSampler_ConstantDecision `protobuf:"varint,1,opt,name=decision,proto3,enum=opencensus.proto.trace.v1.ConstantSampler_ConstantDecision" json:"decision,omitempty"`
+}
+
+func (x *ConstantSampler) Reset() {
+	*x = ConstantSampler{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_opencensus_proto_trace_v1_trace_config_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ConstantSampler) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ConstantSampler) ProtoMessage() {}
+
+func (x *ConstantSampler) ProtoReflect() protoreflect.Message {
+	mi := &file_opencensus_proto_trace_v1_trace_config_proto_msgTypes[2]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ConstantSampler.ProtoReflect.Descriptor instead.
+func (*ConstantSampler) Descriptor() ([]byte, []int) {
+	return file_opencensus_proto_trace_v1_trace_config_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *ConstantSampler) GetDecision() ConstantSampler_ConstantDecision {
+	if x != nil {
+		return x.Decision
+	}
+	return ConstantSampler_ALWAYS_OFF
+}
+
+// Sampler that tries to sample with a rate per time window.
+type RateLimitingSampler struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Rate per second.
+	Qps int64 `protobuf:"varint,1,opt,name=qps,proto3" json:"qps,omitempty"`
+}
+
+func (x *RateLimitingSampler) Reset() {
+	*x = RateLimitingSampler{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_opencensus_proto_trace_v1_trace_config_proto_msgTypes[3]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *RateLimitingSampler) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*RateLimitingSampler) ProtoMessage() {}
+
+func (x *RateLimitingSampler) ProtoReflect() protoreflect.Message {
+	mi := &file_opencensus_proto_trace_v1_trace_config_proto_msgTypes[3]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use RateLimitingSampler.ProtoReflect.Descriptor instead.
+func (*RateLimitingSampler) Descriptor() ([]byte, []int) {
+	return file_opencensus_proto_trace_v1_trace_config_proto_rawDescGZIP(), []int{3}
+}
+
+func (x *RateLimitingSampler) GetQps() int64 {
+	if x != nil {
+		return x.Qps
+	}
+	return 0
+}
+
+var File_opencensus_proto_trace_v1_trace_config_proto protoreflect.FileDescriptor
+
+var file_opencensus_proto_trace_v1_trace_config_proto_rawDesc = []byte{
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+}
+
+var (
+	file_opencensus_proto_trace_v1_trace_config_proto_rawDescOnce sync.Once
+	file_opencensus_proto_trace_v1_trace_config_proto_rawDescData = file_opencensus_proto_trace_v1_trace_config_proto_rawDesc
+)
+
+func file_opencensus_proto_trace_v1_trace_config_proto_rawDescGZIP() []byte {
+	file_opencensus_proto_trace_v1_trace_config_proto_rawDescOnce.Do(func() {
+		file_opencensus_proto_trace_v1_trace_config_proto_rawDescData = protoimpl.X.CompressGZIP(file_opencensus_proto_trace_v1_trace_config_proto_rawDescData)
+	})
+	return file_opencensus_proto_trace_v1_trace_config_proto_rawDescData
+}
+
+var file_opencensus_proto_trace_v1_trace_config_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
+var file_opencensus_proto_trace_v1_trace_config_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
+var file_opencensus_proto_trace_v1_trace_config_proto_goTypes = []interface{}{
+	(ConstantSampler_ConstantDecision)(0), // 0: opencensus.proto.trace.v1.ConstantSampler.ConstantDecision
+	(*TraceConfig)(nil),                   // 1: opencensus.proto.trace.v1.TraceConfig
+	(*ProbabilitySampler)(nil),            // 2: opencensus.proto.trace.v1.ProbabilitySampler
+	(*ConstantSampler)(nil),               // 3: opencensus.proto.trace.v1.ConstantSampler
+	(*RateLimitingSampler)(nil),           // 4: opencensus.proto.trace.v1.RateLimitingSampler
+}
+var file_opencensus_proto_trace_v1_trace_config_proto_depIdxs = []int32{
+	2, // 0: opencensus.proto.trace.v1.TraceConfig.probability_sampler:type_name -> opencensus.proto.trace.v1.ProbabilitySampler
+	3, // 1: opencensus.proto.trace.v1.TraceConfig.constant_sampler:type_name -> opencensus.proto.trace.v1.ConstantSampler
+	4, // 2: opencensus.proto.trace.v1.TraceConfig.rate_limiting_sampler:type_name -> opencensus.proto.trace.v1.RateLimitingSampler
+	0, // 3: opencensus.proto.trace.v1.ConstantSampler.decision:type_name -> opencensus.proto.trace.v1.ConstantSampler.ConstantDecision
+	4, // [4:4] is the sub-list for method output_type
+	4, // [4:4] is the sub-list for method input_type
+	4, // [4:4] is the sub-list for extension type_name
+	4, // [4:4] is the sub-list for extension extendee
+	0, // [0:4] is the sub-list for field type_name
+}
+
+func init() { file_opencensus_proto_trace_v1_trace_config_proto_init() }
+func file_opencensus_proto_trace_v1_trace_config_proto_init() {
+	if File_opencensus_proto_trace_v1_trace_config_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_opencensus_proto_trace_v1_trace_config_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*TraceConfig); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_opencensus_proto_trace_v1_trace_config_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ProbabilitySampler); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_opencensus_proto_trace_v1_trace_config_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ConstantSampler); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_opencensus_proto_trace_v1_trace_config_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*RateLimitingSampler); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	file_opencensus_proto_trace_v1_trace_config_proto_msgTypes[0].OneofWrappers = []interface{}{
+		(*TraceConfig_ProbabilitySampler)(nil),
+		(*TraceConfig_ConstantSampler)(nil),
+		(*TraceConfig_RateLimitingSampler)(nil),
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_opencensus_proto_trace_v1_trace_config_proto_rawDesc,
+			NumEnums:      1,
+			NumMessages:   4,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_opencensus_proto_trace_v1_trace_config_proto_goTypes,
+		DependencyIndexes: file_opencensus_proto_trace_v1_trace_config_proto_depIdxs,
+		EnumInfos:         file_opencensus_proto_trace_v1_trace_config_proto_enumTypes,
+		MessageInfos:      file_opencensus_proto_trace_v1_trace_config_proto_msgTypes,
+	}.Build()
+	File_opencensus_proto_trace_v1_trace_config_proto = out.File
+	file_opencensus_proto_trace_v1_trace_config_proto_rawDesc = nil
+	file_opencensus_proto_trace_v1_trace_config_proto_goTypes = nil
+	file_opencensus_proto_trace_v1_trace_config_proto_depIdxs = nil
+}