diff --git a/third_party/go/opencensus-proto/gen-go/trace/v1/trace.pb.go b/third_party/go/opencensus-proto/gen-go/trace/v1/trace.pb.go
new file mode 100644
index 0000000..2f4ab19
--- /dev/null
+++ b/third_party/go/opencensus-proto/gen-go/trace/v1/trace.pb.go
@@ -0,0 +1,1553 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: opencensus/proto/trace/v1/trace.proto
+
+package v1
+
+import (
+	fmt "fmt"
+	v1 "github.com/census-instrumentation/opencensus-proto/gen-go/resource/v1"
+	proto "github.com/golang/protobuf/proto"
+	timestamp "github.com/golang/protobuf/ptypes/timestamp"
+	wrappers "github.com/golang/protobuf/ptypes/wrappers"
+	math "math"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
+
+// 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
+)
+
+var Span_SpanKind_name = map[int32]string{
+	0: "SPAN_KIND_UNSPECIFIED",
+	1: "SERVER",
+	2: "CLIENT",
+}
+
+var Span_SpanKind_value = map[string]int32{
+	"SPAN_KIND_UNSPECIFIED": 0,
+	"SERVER":                1,
+	"CLIENT":                2,
+}
+
+func (x Span_SpanKind) String() string {
+	return proto.EnumName(Span_SpanKind_name, int32(x))
+}
+
+func (Span_SpanKind) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_8ea38bbb821bf584, []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
+)
+
+var Span_TimeEvent_MessageEvent_Type_name = map[int32]string{
+	0: "TYPE_UNSPECIFIED",
+	1: "SENT",
+	2: "RECEIVED",
+}
+
+var Span_TimeEvent_MessageEvent_Type_value = map[string]int32{
+	"TYPE_UNSPECIFIED": 0,
+	"SENT":             1,
+	"RECEIVED":         2,
+}
+
+func (x Span_TimeEvent_MessageEvent_Type) String() string {
+	return proto.EnumName(Span_TimeEvent_MessageEvent_Type_name, int32(x))
+}
+
+func (Span_TimeEvent_MessageEvent_Type) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_8ea38bbb821bf584, []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
+)
+
+var Span_Link_Type_name = map[int32]string{
+	0: "TYPE_UNSPECIFIED",
+	1: "CHILD_LINKED_SPAN",
+	2: "PARENT_LINKED_SPAN",
+}
+
+var Span_Link_Type_value = map[string]int32{
+	"TYPE_UNSPECIFIED":   0,
+	"CHILD_LINKED_SPAN":  1,
+	"PARENT_LINKED_SPAN": 2,
+}
+
+func (x Span_Link_Type) String() string {
+	return proto.EnumName(Span_Link_Type_name, int32(x))
+}
+
+func (Span_Link_Type) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_8ea38bbb821bf584, []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 {
+	// 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 *timestamp.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 *timestamp.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 *wrappers.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       *wrappers.UInt32Value `protobuf:"bytes,13,opt,name=child_span_count,json=childSpanCount,proto3" json:"child_span_count,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}              `json:"-"`
+	XXX_unrecognized     []byte                `json:"-"`
+	XXX_sizecache        int32                 `json:"-"`
+}
+
+func (m *Span) Reset()         { *m = Span{} }
+func (m *Span) String() string { return proto.CompactTextString(m) }
+func (*Span) ProtoMessage()    {}
+func (*Span) Descriptor() ([]byte, []int) {
+	return fileDescriptor_8ea38bbb821bf584, []int{0}
+}
+
+func (m *Span) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Span.Unmarshal(m, b)
+}
+func (m *Span) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Span.Marshal(b, m, deterministic)
+}
+func (m *Span) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Span.Merge(m, src)
+}
+func (m *Span) XXX_Size() int {
+	return xxx_messageInfo_Span.Size(m)
+}
+func (m *Span) XXX_DiscardUnknown() {
+	xxx_messageInfo_Span.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Span proto.InternalMessageInfo
+
+func (m *Span) GetTraceId() []byte {
+	if m != nil {
+		return m.TraceId
+	}
+	return nil
+}
+
+func (m *Span) GetSpanId() []byte {
+	if m != nil {
+		return m.SpanId
+	}
+	return nil
+}
+
+func (m *Span) GetTracestate() *Span_Tracestate {
+	if m != nil {
+		return m.Tracestate
+	}
+	return nil
+}
+
+func (m *Span) GetParentSpanId() []byte {
+	if m != nil {
+		return m.ParentSpanId
+	}
+	return nil
+}
+
+func (m *Span) GetName() *TruncatableString {
+	if m != nil {
+		return m.Name
+	}
+	return nil
+}
+
+func (m *Span) GetKind() Span_SpanKind {
+	if m != nil {
+		return m.Kind
+	}
+	return Span_SPAN_KIND_UNSPECIFIED
+}
+
+func (m *Span) GetStartTime() *timestamp.Timestamp {
+	if m != nil {
+		return m.StartTime
+	}
+	return nil
+}
+
+func (m *Span) GetEndTime() *timestamp.Timestamp {
+	if m != nil {
+		return m.EndTime
+	}
+	return nil
+}
+
+func (m *Span) GetAttributes() *Span_Attributes {
+	if m != nil {
+		return m.Attributes
+	}
+	return nil
+}
+
+func (m *Span) GetStackTrace() *StackTrace {
+	if m != nil {
+		return m.StackTrace
+	}
+	return nil
+}
+
+func (m *Span) GetTimeEvents() *Span_TimeEvents {
+	if m != nil {
+		return m.TimeEvents
+	}
+	return nil
+}
+
+func (m *Span) GetLinks() *Span_Links {
+	if m != nil {
+		return m.Links
+	}
+	return nil
+}
+
+func (m *Span) GetStatus() *Status {
+	if m != nil {
+		return m.Status
+	}
+	return nil
+}
+
+func (m *Span) GetResource() *v1.Resource {
+	if m != nil {
+		return m.Resource
+	}
+	return nil
+}
+
+func (m *Span) GetSameProcessAsParentSpan() *wrappers.BoolValue {
+	if m != nil {
+		return m.SameProcessAsParentSpan
+	}
+	return nil
+}
+
+func (m *Span) GetChildSpanCount() *wrappers.UInt32Value {
+	if m != nil {
+		return m.ChildSpanCount
+	}
+	return nil
+}
+
+// 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 {
+	// A list of entries that represent the Tracestate.
+	Entries              []*Span_Tracestate_Entry `protobuf:"bytes,1,rep,name=entries,proto3" json:"entries,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}                 `json:"-"`
+	XXX_unrecognized     []byte                   `json:"-"`
+	XXX_sizecache        int32                    `json:"-"`
+}
+
+func (m *Span_Tracestate) Reset()         { *m = Span_Tracestate{} }
+func (m *Span_Tracestate) String() string { return proto.CompactTextString(m) }
+func (*Span_Tracestate) ProtoMessage()    {}
+func (*Span_Tracestate) Descriptor() ([]byte, []int) {
+	return fileDescriptor_8ea38bbb821bf584, []int{0, 0}
+}
+
+func (m *Span_Tracestate) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Span_Tracestate.Unmarshal(m, b)
+}
+func (m *Span_Tracestate) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Span_Tracestate.Marshal(b, m, deterministic)
+}
+func (m *Span_Tracestate) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Span_Tracestate.Merge(m, src)
+}
+func (m *Span_Tracestate) XXX_Size() int {
+	return xxx_messageInfo_Span_Tracestate.Size(m)
+}
+func (m *Span_Tracestate) XXX_DiscardUnknown() {
+	xxx_messageInfo_Span_Tracestate.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Span_Tracestate proto.InternalMessageInfo
+
+func (m *Span_Tracestate) GetEntries() []*Span_Tracestate_Entry {
+	if m != nil {
+		return m.Entries
+	}
+	return nil
+}
+
+type Span_Tracestate_Entry struct {
+	// 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"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *Span_Tracestate_Entry) Reset()         { *m = Span_Tracestate_Entry{} }
+func (m *Span_Tracestate_Entry) String() string { return proto.CompactTextString(m) }
+func (*Span_Tracestate_Entry) ProtoMessage()    {}
+func (*Span_Tracestate_Entry) Descriptor() ([]byte, []int) {
+	return fileDescriptor_8ea38bbb821bf584, []int{0, 0, 0}
+}
+
+func (m *Span_Tracestate_Entry) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Span_Tracestate_Entry.Unmarshal(m, b)
+}
+func (m *Span_Tracestate_Entry) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Span_Tracestate_Entry.Marshal(b, m, deterministic)
+}
+func (m *Span_Tracestate_Entry) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Span_Tracestate_Entry.Merge(m, src)
+}
+func (m *Span_Tracestate_Entry) XXX_Size() int {
+	return xxx_messageInfo_Span_Tracestate_Entry.Size(m)
+}
+func (m *Span_Tracestate_Entry) XXX_DiscardUnknown() {
+	xxx_messageInfo_Span_Tracestate_Entry.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Span_Tracestate_Entry proto.InternalMessageInfo
+
+func (m *Span_Tracestate_Entry) GetKey() string {
+	if m != nil {
+		return m.Key
+	}
+	return ""
+}
+
+func (m *Span_Tracestate_Entry) GetValue() string {
+	if m != nil {
+		return m.Value
+	}
+	return ""
+}
+
+// A set of attributes, each with a key and a value.
+type Span_Attributes struct {
+	// 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"`
+	XXX_NoUnkeyedLiteral   struct{} `json:"-"`
+	XXX_unrecognized       []byte   `json:"-"`
+	XXX_sizecache          int32    `json:"-"`
+}
+
+func (m *Span_Attributes) Reset()         { *m = Span_Attributes{} }
+func (m *Span_Attributes) String() string { return proto.CompactTextString(m) }
+func (*Span_Attributes) ProtoMessage()    {}
+func (*Span_Attributes) Descriptor() ([]byte, []int) {
+	return fileDescriptor_8ea38bbb821bf584, []int{0, 1}
+}
+
+func (m *Span_Attributes) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Span_Attributes.Unmarshal(m, b)
+}
+func (m *Span_Attributes) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Span_Attributes.Marshal(b, m, deterministic)
+}
+func (m *Span_Attributes) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Span_Attributes.Merge(m, src)
+}
+func (m *Span_Attributes) XXX_Size() int {
+	return xxx_messageInfo_Span_Attributes.Size(m)
+}
+func (m *Span_Attributes) XXX_DiscardUnknown() {
+	xxx_messageInfo_Span_Attributes.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Span_Attributes proto.InternalMessageInfo
+
+func (m *Span_Attributes) GetAttributeMap() map[string]*AttributeValue {
+	if m != nil {
+		return m.AttributeMap
+	}
+	return nil
+}
+
+func (m *Span_Attributes) GetDroppedAttributesCount() int32 {
+	if m != nil {
+		return m.DroppedAttributesCount
+	}
+	return 0
+}
+
+// A time-stamped annotation or message event in the Span.
+type Span_TimeEvent struct {
+	// The time the event occurred.
+	Time *timestamp.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 valid to be assigned to Value:
+	//	*Span_TimeEvent_Annotation_
+	//	*Span_TimeEvent_MessageEvent_
+	Value                isSpan_TimeEvent_Value `protobuf_oneof:"value"`
+	XXX_NoUnkeyedLiteral struct{}               `json:"-"`
+	XXX_unrecognized     []byte                 `json:"-"`
+	XXX_sizecache        int32                  `json:"-"`
+}
+
+func (m *Span_TimeEvent) Reset()         { *m = Span_TimeEvent{} }
+func (m *Span_TimeEvent) String() string { return proto.CompactTextString(m) }
+func (*Span_TimeEvent) ProtoMessage()    {}
+func (*Span_TimeEvent) Descriptor() ([]byte, []int) {
+	return fileDescriptor_8ea38bbb821bf584, []int{0, 2}
+}
+
+func (m *Span_TimeEvent) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Span_TimeEvent.Unmarshal(m, b)
+}
+func (m *Span_TimeEvent) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Span_TimeEvent.Marshal(b, m, deterministic)
+}
+func (m *Span_TimeEvent) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Span_TimeEvent.Merge(m, src)
+}
+func (m *Span_TimeEvent) XXX_Size() int {
+	return xxx_messageInfo_Span_TimeEvent.Size(m)
+}
+func (m *Span_TimeEvent) XXX_DiscardUnknown() {
+	xxx_messageInfo_Span_TimeEvent.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Span_TimeEvent proto.InternalMessageInfo
+
+func (m *Span_TimeEvent) GetTime() *timestamp.Timestamp {
+	if m != nil {
+		return m.Time
+	}
+	return nil
+}
+
+type isSpan_TimeEvent_Value interface {
+	isSpan_TimeEvent_Value()
+}
+
+type Span_TimeEvent_Annotation_ struct {
+	Annotation *Span_TimeEvent_Annotation `protobuf:"bytes,2,opt,name=annotation,proto3,oneof"`
+}
+
+type Span_TimeEvent_MessageEvent_ struct {
+	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() {}
+
+func (m *Span_TimeEvent) GetValue() isSpan_TimeEvent_Value {
+	if m != nil {
+		return m.Value
+	}
+	return nil
+}
+
+func (m *Span_TimeEvent) GetAnnotation() *Span_TimeEvent_Annotation {
+	if x, ok := m.GetValue().(*Span_TimeEvent_Annotation_); ok {
+		return x.Annotation
+	}
+	return nil
+}
+
+func (m *Span_TimeEvent) GetMessageEvent() *Span_TimeEvent_MessageEvent {
+	if x, ok := m.GetValue().(*Span_TimeEvent_MessageEvent_); ok {
+		return x.MessageEvent
+	}
+	return nil
+}
+
+// XXX_OneofWrappers is for the internal use of the proto package.
+func (*Span_TimeEvent) XXX_OneofWrappers() []interface{} {
+	return []interface{}{
+		(*Span_TimeEvent_Annotation_)(nil),
+		(*Span_TimeEvent_MessageEvent_)(nil),
+	}
+}
+
+// A text annotation with a set of attributes.
+type Span_TimeEvent_Annotation struct {
+	// 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"`
+	XXX_NoUnkeyedLiteral struct{}         `json:"-"`
+	XXX_unrecognized     []byte           `json:"-"`
+	XXX_sizecache        int32            `json:"-"`
+}
+
+func (m *Span_TimeEvent_Annotation) Reset()         { *m = Span_TimeEvent_Annotation{} }
+func (m *Span_TimeEvent_Annotation) String() string { return proto.CompactTextString(m) }
+func (*Span_TimeEvent_Annotation) ProtoMessage()    {}
+func (*Span_TimeEvent_Annotation) Descriptor() ([]byte, []int) {
+	return fileDescriptor_8ea38bbb821bf584, []int{0, 2, 0}
+}
+
+func (m *Span_TimeEvent_Annotation) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Span_TimeEvent_Annotation.Unmarshal(m, b)
+}
+func (m *Span_TimeEvent_Annotation) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Span_TimeEvent_Annotation.Marshal(b, m, deterministic)
+}
+func (m *Span_TimeEvent_Annotation) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Span_TimeEvent_Annotation.Merge(m, src)
+}
+func (m *Span_TimeEvent_Annotation) XXX_Size() int {
+	return xxx_messageInfo_Span_TimeEvent_Annotation.Size(m)
+}
+func (m *Span_TimeEvent_Annotation) XXX_DiscardUnknown() {
+	xxx_messageInfo_Span_TimeEvent_Annotation.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Span_TimeEvent_Annotation proto.InternalMessageInfo
+
+func (m *Span_TimeEvent_Annotation) GetDescription() *TruncatableString {
+	if m != nil {
+		return m.Description
+	}
+	return nil
+}
+
+func (m *Span_TimeEvent_Annotation) GetAttributes() *Span_Attributes {
+	if m != nil {
+		return m.Attributes
+	}
+	return nil
+}
+
+// An event describing a message sent/received between Spans.
+type Span_TimeEvent_MessageEvent struct {
+	// 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"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *Span_TimeEvent_MessageEvent) Reset()         { *m = Span_TimeEvent_MessageEvent{} }
+func (m *Span_TimeEvent_MessageEvent) String() string { return proto.CompactTextString(m) }
+func (*Span_TimeEvent_MessageEvent) ProtoMessage()    {}
+func (*Span_TimeEvent_MessageEvent) Descriptor() ([]byte, []int) {
+	return fileDescriptor_8ea38bbb821bf584, []int{0, 2, 1}
+}
+
+func (m *Span_TimeEvent_MessageEvent) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Span_TimeEvent_MessageEvent.Unmarshal(m, b)
+}
+func (m *Span_TimeEvent_MessageEvent) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Span_TimeEvent_MessageEvent.Marshal(b, m, deterministic)
+}
+func (m *Span_TimeEvent_MessageEvent) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Span_TimeEvent_MessageEvent.Merge(m, src)
+}
+func (m *Span_TimeEvent_MessageEvent) XXX_Size() int {
+	return xxx_messageInfo_Span_TimeEvent_MessageEvent.Size(m)
+}
+func (m *Span_TimeEvent_MessageEvent) XXX_DiscardUnknown() {
+	xxx_messageInfo_Span_TimeEvent_MessageEvent.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Span_TimeEvent_MessageEvent proto.InternalMessageInfo
+
+func (m *Span_TimeEvent_MessageEvent) GetType() Span_TimeEvent_MessageEvent_Type {
+	if m != nil {
+		return m.Type
+	}
+	return Span_TimeEvent_MessageEvent_TYPE_UNSPECIFIED
+}
+
+func (m *Span_TimeEvent_MessageEvent) GetId() uint64 {
+	if m != nil {
+		return m.Id
+	}
+	return 0
+}
+
+func (m *Span_TimeEvent_MessageEvent) GetUncompressedSize() uint64 {
+	if m != nil {
+		return m.UncompressedSize
+	}
+	return 0
+}
+
+func (m *Span_TimeEvent_MessageEvent) GetCompressedSize() uint64 {
+	if m != nil {
+		return m.CompressedSize
+	}
+	return 0
+}
+
+// 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 {
+	// 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"`
+	XXX_NoUnkeyedLiteral      struct{} `json:"-"`
+	XXX_unrecognized          []byte   `json:"-"`
+	XXX_sizecache             int32    `json:"-"`
+}
+
+func (m *Span_TimeEvents) Reset()         { *m = Span_TimeEvents{} }
+func (m *Span_TimeEvents) String() string { return proto.CompactTextString(m) }
+func (*Span_TimeEvents) ProtoMessage()    {}
+func (*Span_TimeEvents) Descriptor() ([]byte, []int) {
+	return fileDescriptor_8ea38bbb821bf584, []int{0, 3}
+}
+
+func (m *Span_TimeEvents) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Span_TimeEvents.Unmarshal(m, b)
+}
+func (m *Span_TimeEvents) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Span_TimeEvents.Marshal(b, m, deterministic)
+}
+func (m *Span_TimeEvents) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Span_TimeEvents.Merge(m, src)
+}
+func (m *Span_TimeEvents) XXX_Size() int {
+	return xxx_messageInfo_Span_TimeEvents.Size(m)
+}
+func (m *Span_TimeEvents) XXX_DiscardUnknown() {
+	xxx_messageInfo_Span_TimeEvents.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Span_TimeEvents proto.InternalMessageInfo
+
+func (m *Span_TimeEvents) GetTimeEvent() []*Span_TimeEvent {
+	if m != nil {
+		return m.TimeEvent
+	}
+	return nil
+}
+
+func (m *Span_TimeEvents) GetDroppedAnnotationsCount() int32 {
+	if m != nil {
+		return m.DroppedAnnotationsCount
+	}
+	return 0
+}
+
+func (m *Span_TimeEvents) GetDroppedMessageEventsCount() int32 {
+	if m != nil {
+		return m.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 {
+	// 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"`
+	XXX_NoUnkeyedLiteral struct{}         `json:"-"`
+	XXX_unrecognized     []byte           `json:"-"`
+	XXX_sizecache        int32            `json:"-"`
+}
+
+func (m *Span_Link) Reset()         { *m = Span_Link{} }
+func (m *Span_Link) String() string { return proto.CompactTextString(m) }
+func (*Span_Link) ProtoMessage()    {}
+func (*Span_Link) Descriptor() ([]byte, []int) {
+	return fileDescriptor_8ea38bbb821bf584, []int{0, 4}
+}
+
+func (m *Span_Link) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Span_Link.Unmarshal(m, b)
+}
+func (m *Span_Link) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Span_Link.Marshal(b, m, deterministic)
+}
+func (m *Span_Link) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Span_Link.Merge(m, src)
+}
+func (m *Span_Link) XXX_Size() int {
+	return xxx_messageInfo_Span_Link.Size(m)
+}
+func (m *Span_Link) XXX_DiscardUnknown() {
+	xxx_messageInfo_Span_Link.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Span_Link proto.InternalMessageInfo
+
+func (m *Span_Link) GetTraceId() []byte {
+	if m != nil {
+		return m.TraceId
+	}
+	return nil
+}
+
+func (m *Span_Link) GetSpanId() []byte {
+	if m != nil {
+		return m.SpanId
+	}
+	return nil
+}
+
+func (m *Span_Link) GetType() Span_Link_Type {
+	if m != nil {
+		return m.Type
+	}
+	return Span_Link_TYPE_UNSPECIFIED
+}
+
+func (m *Span_Link) GetAttributes() *Span_Attributes {
+	if m != nil {
+		return m.Attributes
+	}
+	return nil
+}
+
+func (m *Span_Link) GetTracestate() *Span_Tracestate {
+	if m != nil {
+		return m.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 {
+	// 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"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *Span_Links) Reset()         { *m = Span_Links{} }
+func (m *Span_Links) String() string { return proto.CompactTextString(m) }
+func (*Span_Links) ProtoMessage()    {}
+func (*Span_Links) Descriptor() ([]byte, []int) {
+	return fileDescriptor_8ea38bbb821bf584, []int{0, 5}
+}
+
+func (m *Span_Links) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Span_Links.Unmarshal(m, b)
+}
+func (m *Span_Links) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Span_Links.Marshal(b, m, deterministic)
+}
+func (m *Span_Links) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Span_Links.Merge(m, src)
+}
+func (m *Span_Links) XXX_Size() int {
+	return xxx_messageInfo_Span_Links.Size(m)
+}
+func (m *Span_Links) XXX_DiscardUnknown() {
+	xxx_messageInfo_Span_Links.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Span_Links proto.InternalMessageInfo
+
+func (m *Span_Links) GetLink() []*Span_Link {
+	if m != nil {
+		return m.Link
+	}
+	return nil
+}
+
+func (m *Span_Links) GetDroppedLinksCount() int32 {
+	if m != nil {
+		return m.DroppedLinksCount
+	}
+	return 0
+}
+
+// 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 {
+	// 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"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *Status) Reset()         { *m = Status{} }
+func (m *Status) String() string { return proto.CompactTextString(m) }
+func (*Status) ProtoMessage()    {}
+func (*Status) Descriptor() ([]byte, []int) {
+	return fileDescriptor_8ea38bbb821bf584, []int{1}
+}
+
+func (m *Status) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Status.Unmarshal(m, b)
+}
+func (m *Status) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Status.Marshal(b, m, deterministic)
+}
+func (m *Status) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Status.Merge(m, src)
+}
+func (m *Status) XXX_Size() int {
+	return xxx_messageInfo_Status.Size(m)
+}
+func (m *Status) XXX_DiscardUnknown() {
+	xxx_messageInfo_Status.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Status proto.InternalMessageInfo
+
+func (m *Status) GetCode() int32 {
+	if m != nil {
+		return m.Code
+	}
+	return 0
+}
+
+func (m *Status) GetMessage() string {
+	if m != nil {
+		return m.Message
+	}
+	return ""
+}
+
+// The value of an Attribute.
+type AttributeValue struct {
+	// The type of the value.
+	//
+	// Types that are valid to be assigned to Value:
+	//	*AttributeValue_StringValue
+	//	*AttributeValue_IntValue
+	//	*AttributeValue_BoolValue
+	//	*AttributeValue_DoubleValue
+	Value                isAttributeValue_Value `protobuf_oneof:"value"`
+	XXX_NoUnkeyedLiteral struct{}               `json:"-"`
+	XXX_unrecognized     []byte                 `json:"-"`
+	XXX_sizecache        int32                  `json:"-"`
+}
+
+func (m *AttributeValue) Reset()         { *m = AttributeValue{} }
+func (m *AttributeValue) String() string { return proto.CompactTextString(m) }
+func (*AttributeValue) ProtoMessage()    {}
+func (*AttributeValue) Descriptor() ([]byte, []int) {
+	return fileDescriptor_8ea38bbb821bf584, []int{2}
+}
+
+func (m *AttributeValue) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_AttributeValue.Unmarshal(m, b)
+}
+func (m *AttributeValue) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_AttributeValue.Marshal(b, m, deterministic)
+}
+func (m *AttributeValue) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_AttributeValue.Merge(m, src)
+}
+func (m *AttributeValue) XXX_Size() int {
+	return xxx_messageInfo_AttributeValue.Size(m)
+}
+func (m *AttributeValue) XXX_DiscardUnknown() {
+	xxx_messageInfo_AttributeValue.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_AttributeValue proto.InternalMessageInfo
+
+type isAttributeValue_Value interface {
+	isAttributeValue_Value()
+}
+
+type AttributeValue_StringValue struct {
+	StringValue *TruncatableString `protobuf:"bytes,1,opt,name=string_value,json=stringValue,proto3,oneof"`
+}
+
+type AttributeValue_IntValue struct {
+	IntValue int64 `protobuf:"varint,2,opt,name=int_value,json=intValue,proto3,oneof"`
+}
+
+type AttributeValue_BoolValue struct {
+	BoolValue bool `protobuf:"varint,3,opt,name=bool_value,json=boolValue,proto3,oneof"`
+}
+
+type AttributeValue_DoubleValue struct {
+	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() {}
+
+func (m *AttributeValue) GetValue() isAttributeValue_Value {
+	if m != nil {
+		return m.Value
+	}
+	return nil
+}
+
+func (m *AttributeValue) GetStringValue() *TruncatableString {
+	if x, ok := m.GetValue().(*AttributeValue_StringValue); ok {
+		return x.StringValue
+	}
+	return nil
+}
+
+func (m *AttributeValue) GetIntValue() int64 {
+	if x, ok := m.GetValue().(*AttributeValue_IntValue); ok {
+		return x.IntValue
+	}
+	return 0
+}
+
+func (m *AttributeValue) GetBoolValue() bool {
+	if x, ok := m.GetValue().(*AttributeValue_BoolValue); ok {
+		return x.BoolValue
+	}
+	return false
+}
+
+func (m *AttributeValue) GetDoubleValue() float64 {
+	if x, ok := m.GetValue().(*AttributeValue_DoubleValue); ok {
+		return x.DoubleValue
+	}
+	return 0
+}
+
+// XXX_OneofWrappers is for the internal use of the proto package.
+func (*AttributeValue) XXX_OneofWrappers() []interface{} {
+	return []interface{}{
+		(*AttributeValue_StringValue)(nil),
+		(*AttributeValue_IntValue)(nil),
+		(*AttributeValue_BoolValue)(nil),
+		(*AttributeValue_DoubleValue)(nil),
+	}
+}
+
+// The call stack which originated this span.
+type StackTrace struct {
+	// 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"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *StackTrace) Reset()         { *m = StackTrace{} }
+func (m *StackTrace) String() string { return proto.CompactTextString(m) }
+func (*StackTrace) ProtoMessage()    {}
+func (*StackTrace) Descriptor() ([]byte, []int) {
+	return fileDescriptor_8ea38bbb821bf584, []int{3}
+}
+
+func (m *StackTrace) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_StackTrace.Unmarshal(m, b)
+}
+func (m *StackTrace) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_StackTrace.Marshal(b, m, deterministic)
+}
+func (m *StackTrace) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_StackTrace.Merge(m, src)
+}
+func (m *StackTrace) XXX_Size() int {
+	return xxx_messageInfo_StackTrace.Size(m)
+}
+func (m *StackTrace) XXX_DiscardUnknown() {
+	xxx_messageInfo_StackTrace.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_StackTrace proto.InternalMessageInfo
+
+func (m *StackTrace) GetStackFrames() *StackTrace_StackFrames {
+	if m != nil {
+		return m.StackFrames
+	}
+	return nil
+}
+
+func (m *StackTrace) GetStackTraceHashId() uint64 {
+	if m != nil {
+		return m.StackTraceHashId
+	}
+	return 0
+}
+
+// A single stack frame in a stack trace.
+type StackTrace_StackFrame struct {
+	// 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"`
+	XXX_NoUnkeyedLiteral struct{}           `json:"-"`
+	XXX_unrecognized     []byte             `json:"-"`
+	XXX_sizecache        int32              `json:"-"`
+}
+
+func (m *StackTrace_StackFrame) Reset()         { *m = StackTrace_StackFrame{} }
+func (m *StackTrace_StackFrame) String() string { return proto.CompactTextString(m) }
+func (*StackTrace_StackFrame) ProtoMessage()    {}
+func (*StackTrace_StackFrame) Descriptor() ([]byte, []int) {
+	return fileDescriptor_8ea38bbb821bf584, []int{3, 0}
+}
+
+func (m *StackTrace_StackFrame) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_StackTrace_StackFrame.Unmarshal(m, b)
+}
+func (m *StackTrace_StackFrame) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_StackTrace_StackFrame.Marshal(b, m, deterministic)
+}
+func (m *StackTrace_StackFrame) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_StackTrace_StackFrame.Merge(m, src)
+}
+func (m *StackTrace_StackFrame) XXX_Size() int {
+	return xxx_messageInfo_StackTrace_StackFrame.Size(m)
+}
+func (m *StackTrace_StackFrame) XXX_DiscardUnknown() {
+	xxx_messageInfo_StackTrace_StackFrame.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_StackTrace_StackFrame proto.InternalMessageInfo
+
+func (m *StackTrace_StackFrame) GetFunctionName() *TruncatableString {
+	if m != nil {
+		return m.FunctionName
+	}
+	return nil
+}
+
+func (m *StackTrace_StackFrame) GetOriginalFunctionName() *TruncatableString {
+	if m != nil {
+		return m.OriginalFunctionName
+	}
+	return nil
+}
+
+func (m *StackTrace_StackFrame) GetFileName() *TruncatableString {
+	if m != nil {
+		return m.FileName
+	}
+	return nil
+}
+
+func (m *StackTrace_StackFrame) GetLineNumber() int64 {
+	if m != nil {
+		return m.LineNumber
+	}
+	return 0
+}
+
+func (m *StackTrace_StackFrame) GetColumnNumber() int64 {
+	if m != nil {
+		return m.ColumnNumber
+	}
+	return 0
+}
+
+func (m *StackTrace_StackFrame) GetLoadModule() *Module {
+	if m != nil {
+		return m.LoadModule
+	}
+	return nil
+}
+
+func (m *StackTrace_StackFrame) GetSourceVersion() *TruncatableString {
+	if m != nil {
+		return m.SourceVersion
+	}
+	return nil
+}
+
+// A collection of stack frames, which can be truncated.
+type StackTrace_StackFrames struct {
+	// 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"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *StackTrace_StackFrames) Reset()         { *m = StackTrace_StackFrames{} }
+func (m *StackTrace_StackFrames) String() string { return proto.CompactTextString(m) }
+func (*StackTrace_StackFrames) ProtoMessage()    {}
+func (*StackTrace_StackFrames) Descriptor() ([]byte, []int) {
+	return fileDescriptor_8ea38bbb821bf584, []int{3, 1}
+}
+
+func (m *StackTrace_StackFrames) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_StackTrace_StackFrames.Unmarshal(m, b)
+}
+func (m *StackTrace_StackFrames) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_StackTrace_StackFrames.Marshal(b, m, deterministic)
+}
+func (m *StackTrace_StackFrames) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_StackTrace_StackFrames.Merge(m, src)
+}
+func (m *StackTrace_StackFrames) XXX_Size() int {
+	return xxx_messageInfo_StackTrace_StackFrames.Size(m)
+}
+func (m *StackTrace_StackFrames) XXX_DiscardUnknown() {
+	xxx_messageInfo_StackTrace_StackFrames.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_StackTrace_StackFrames proto.InternalMessageInfo
+
+func (m *StackTrace_StackFrames) GetFrame() []*StackTrace_StackFrame {
+	if m != nil {
+		return m.Frame
+	}
+	return nil
+}
+
+func (m *StackTrace_StackFrames) GetDroppedFramesCount() int32 {
+	if m != nil {
+		return m.DroppedFramesCount
+	}
+	return 0
+}
+
+// A description of a binary module.
+type Module struct {
+	// 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"`
+	XXX_NoUnkeyedLiteral struct{}           `json:"-"`
+	XXX_unrecognized     []byte             `json:"-"`
+	XXX_sizecache        int32              `json:"-"`
+}
+
+func (m *Module) Reset()         { *m = Module{} }
+func (m *Module) String() string { return proto.CompactTextString(m) }
+func (*Module) ProtoMessage()    {}
+func (*Module) Descriptor() ([]byte, []int) {
+	return fileDescriptor_8ea38bbb821bf584, []int{4}
+}
+
+func (m *Module) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Module.Unmarshal(m, b)
+}
+func (m *Module) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Module.Marshal(b, m, deterministic)
+}
+func (m *Module) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Module.Merge(m, src)
+}
+func (m *Module) XXX_Size() int {
+	return xxx_messageInfo_Module.Size(m)
+}
+func (m *Module) XXX_DiscardUnknown() {
+	xxx_messageInfo_Module.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Module proto.InternalMessageInfo
+
+func (m *Module) GetModule() *TruncatableString {
+	if m != nil {
+		return m.Module
+	}
+	return nil
+}
+
+func (m *Module) GetBuildId() *TruncatableString {
+	if m != nil {
+		return m.BuildId
+	}
+	return nil
+}
+
+// A string that might be shortened to a specified length.
+type TruncatableString struct {
+	// 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"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *TruncatableString) Reset()         { *m = TruncatableString{} }
+func (m *TruncatableString) String() string { return proto.CompactTextString(m) }
+func (*TruncatableString) ProtoMessage()    {}
+func (*TruncatableString) Descriptor() ([]byte, []int) {
+	return fileDescriptor_8ea38bbb821bf584, []int{5}
+}
+
+func (m *TruncatableString) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_TruncatableString.Unmarshal(m, b)
+}
+func (m *TruncatableString) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_TruncatableString.Marshal(b, m, deterministic)
+}
+func (m *TruncatableString) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_TruncatableString.Merge(m, src)
+}
+func (m *TruncatableString) XXX_Size() int {
+	return xxx_messageInfo_TruncatableString.Size(m)
+}
+func (m *TruncatableString) XXX_DiscardUnknown() {
+	xxx_messageInfo_TruncatableString.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_TruncatableString proto.InternalMessageInfo
+
+func (m *TruncatableString) GetValue() string {
+	if m != nil {
+		return m.Value
+	}
+	return ""
+}
+
+func (m *TruncatableString) GetTruncatedByteCount() int32 {
+	if m != nil {
+		return m.TruncatedByteCount
+	}
+	return 0
+}
+
+func init() {
+	proto.RegisterEnum("opencensus.proto.trace.v1.Span_SpanKind", Span_SpanKind_name, Span_SpanKind_value)
+	proto.RegisterEnum("opencensus.proto.trace.v1.Span_TimeEvent_MessageEvent_Type", Span_TimeEvent_MessageEvent_Type_name, Span_TimeEvent_MessageEvent_Type_value)
+	proto.RegisterEnum("opencensus.proto.trace.v1.Span_Link_Type", Span_Link_Type_name, Span_Link_Type_value)
+	proto.RegisterType((*Span)(nil), "opencensus.proto.trace.v1.Span")
+	proto.RegisterType((*Span_Tracestate)(nil), "opencensus.proto.trace.v1.Span.Tracestate")
+	proto.RegisterType((*Span_Tracestate_Entry)(nil), "opencensus.proto.trace.v1.Span.Tracestate.Entry")
+	proto.RegisterType((*Span_Attributes)(nil), "opencensus.proto.trace.v1.Span.Attributes")
+	proto.RegisterMapType((map[string]*AttributeValue)(nil), "opencensus.proto.trace.v1.Span.Attributes.AttributeMapEntry")
+	proto.RegisterType((*Span_TimeEvent)(nil), "opencensus.proto.trace.v1.Span.TimeEvent")
+	proto.RegisterType((*Span_TimeEvent_Annotation)(nil), "opencensus.proto.trace.v1.Span.TimeEvent.Annotation")
+	proto.RegisterType((*Span_TimeEvent_MessageEvent)(nil), "opencensus.proto.trace.v1.Span.TimeEvent.MessageEvent")
+	proto.RegisterType((*Span_TimeEvents)(nil), "opencensus.proto.trace.v1.Span.TimeEvents")
+	proto.RegisterType((*Span_Link)(nil), "opencensus.proto.trace.v1.Span.Link")
+	proto.RegisterType((*Span_Links)(nil), "opencensus.proto.trace.v1.Span.Links")
+	proto.RegisterType((*Status)(nil), "opencensus.proto.trace.v1.Status")
+	proto.RegisterType((*AttributeValue)(nil), "opencensus.proto.trace.v1.AttributeValue")
+	proto.RegisterType((*StackTrace)(nil), "opencensus.proto.trace.v1.StackTrace")
+	proto.RegisterType((*StackTrace_StackFrame)(nil), "opencensus.proto.trace.v1.StackTrace.StackFrame")
+	proto.RegisterType((*StackTrace_StackFrames)(nil), "opencensus.proto.trace.v1.StackTrace.StackFrames")
+	proto.RegisterType((*Module)(nil), "opencensus.proto.trace.v1.Module")
+	proto.RegisterType((*TruncatableString)(nil), "opencensus.proto.trace.v1.TruncatableString")
+}
+
+func init() {
+	proto.RegisterFile("opencensus/proto/trace/v1/trace.proto", fileDescriptor_8ea38bbb821bf584)
+}
+
+var fileDescriptor_8ea38bbb821bf584 = []byte{
+	// 1581 bytes of a gzipped FileDescriptorProto
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