Repository: census-ecosystem/opencensus-go-exporter-stackdriver
Pull request #282 (2021-01-31 04:51:02)

flush interval reader when stopping metric reader
Flush interval reader when stopping metric reader. Fixes unit test after update dependencies.

quentin-cha: Thanks again for helping me out!

Patch:
diff --git a/go.mod b/go.mod
index bdcd72a..cb1c1a3 100644
--- a/go.mod
+++ b/go.mod
@@ -3,21 +3,22 @@ module contrib.go.opencensus.io/exporter/stackdriver
 go 1.12
 
 require (
-	cloud.google.com/go v0.45.1
-	github.com/aws/aws-sdk-go v1.23.20
-	github.com/census-instrumentation/opencensus-proto v0.2.1
-	github.com/golang/protobuf v1.3.2
-	github.com/google/go-cmp v0.3.1
-	github.com/jstemmer/go-junit-report v0.0.0-20190106144839-af01ea7f8024
-	go.opencensus.io v0.22.4
-	golang.org/x/lint v0.0.0-20190409202823-959b441ac422
-	golang.org/x/net v0.0.0-20190923162816-aa69164e4478
-	golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45
-	golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e // indirect
-	golang.org/x/tools v0.0.0-20191010075000-0337d82405ff
-	google.golang.org/api v0.10.0
-	google.golang.org/appengine v1.6.2 // indirect
-	google.golang.org/genproto v0.0.0-20190911173649-1774047e7e51
-	google.golang.org/grpc v1.23.1
-	honnef.co/go/tools v0.0.1-2019.2.3
+	cloud.google.com/go v0.75.0
+	github.com/aws/aws-sdk-go v1.37.0
+	github.com/census-instrumentation/opencensus-proto v0.3.0
+	github.com/golang/protobuf v1.4.3
+	github.com/google/go-cmp v0.5.4
+	github.com/jstemmer/go-junit-report v0.9.1
+	go.opencensus.io v0.22.6
+	golang.org/x/lint v0.0.0-20201208152925-83fdc39ff7b5
+	golang.org/x/net v0.0.0-20210119194325-5f4716e94777
+	golang.org/x/oauth2 v0.0.0-20210126194326-f9ce19ea3013
+	golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c // indirect
+	golang.org/x/text v0.3.5 // indirect
+	golang.org/x/tools v0.0.0-20210108195828-e2f9c7f1fc8e
+	google.golang.org/api v0.37.0
+	google.golang.org/genproto v0.0.0-20210126160654-44e461bb6506
+	google.golang.org/grpc v1.35.0
+	google.golang.org/protobuf v1.25.0
+	honnef.co/go/tools v0.0.1-2020.1.4
 )
diff --git a/go.sum b/go.sum
index e219b19..863e8a1 100644
--- a/go.sum
+++ b/go.sum
@@ -7,32 +7,97 @@ cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6A
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@@ -41,10 +106,29 @@ github.com/google/go-cmp v0.3.0 h1:crn/baboCvb5fXaQ0IJ1SGTsTVrWpDsCWC8EGETZijY=
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@@ -118,6 +276,11 @@ golang.org/x/sync v0.0.0-20190423024810-112230192c58 h1:8gQV6CLnAEikrhgkHFbMAEha
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@@ -128,14 +291,46 @@ golang.org/x/sys v0.0.0-20190507160741-ecd444e8653b/go.mod h1:h1NjWce9XRLGQEsW7w
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 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
+gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
@@ -200,4 +503,9 @@ honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc h1:/hemPrYIhOhy8zYrNj+069z
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.1-2019.2.3 h1:3JgtbtFHMiCmsznwGVTUWbgGov+pVqnlf1dEJTNAXeM=
 honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
+honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
+honnef.co/go/tools v0.0.1-2020.1.4 h1:UoveltGrhghAA7ePc+e+QYDHXrBps2PqFZiHkGR/xK8=
+honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
+rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
+rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
diff --git a/metrics.go b/metrics.go
index 8a185b9..902b776 100644
--- a/metrics.go
+++ b/metrics.go
@@ -24,10 +24,10 @@ import (
 	"fmt"
 	"strings"
 
-	"github.com/golang/protobuf/proto"
 	"github.com/golang/protobuf/ptypes/any"
 	"github.com/golang/protobuf/ptypes/timestamp"
 	"go.opencensus.io/trace"
+	"google.golang.org/protobuf/proto"
 
 	distributionpb "google.golang.org/genproto/googleapis/api/distribution"
 	labelpb "google.golang.org/genproto/googleapis/api/label"
diff --git a/metrics_batcher.go b/metrics_batcher.go
index 628471e..8710b5e 100644
--- a/metrics_batcher.go
+++ b/metrics_batcher.go
@@ -23,7 +23,7 @@ import (
 	"sync"
 	"time"
 
-	monitoring "cloud.google.com/go/monitoring/apiv3"
+	monitoring "cloud.google.com/go/monitoring/apiv3/v2"
 	monitoringpb "google.golang.org/genproto/googleapis/monitoring/v3"
 )
 
diff --git a/stats.go b/stats.go
index 895945b..1fd7d99 100644
--- a/stats.go
+++ b/stats.go
@@ -31,7 +31,7 @@ import (
 	"go.opencensus.io/tag"
 	"go.opencensus.io/trace"
 
-	monitoring "cloud.google.com/go/monitoring/apiv3"
+	monitoring "cloud.google.com/go/monitoring/apiv3/v2"
 	"github.com/golang/protobuf/ptypes/timestamp"
 	"go.opencensus.io/metric/metricdata"
 	"go.opencensus.io/metric/metricexport"
@@ -39,8 +39,6 @@ import (
 	"google.golang.org/api/support/bundler"
 	distributionpb "google.golang.org/genproto/googleapis/api/distribution"
 	labelpb "google.golang.org/genproto/googleapis/api/label"
-	"google.golang.org/genproto/googleapis/api/metric"
-	googlemetricpb "google.golang.org/genproto/googleapis/api/metric"
 	metricpb "google.golang.org/genproto/googleapis/api/metric"
 	monitoredrespb "google.golang.org/genproto/googleapis/api/monitoredres"
 	monitoringpb "google.golang.org/genproto/googleapis/monitoring/v3"
@@ -147,6 +145,7 @@ func (e *statsExporter) startMetricsReader() error {
 func (e *statsExporter) stopMetricsReader() {
 	if e.ir != nil {
 		e.ir.Stop()
+		e.ir.Flush()
 	}
 }
 
@@ -433,7 +432,7 @@ func (e *statsExporter) combineTimeSeriesToCreateTimeSeriesRequest(ts []*monitor
 // metricSignature creates a unique signature consisting of a
 // metric's type and its lexicographically sorted label values
 // See https://github.com/census-ecosystem/opencensus-go-exporter-stackdriver/issues/120
-func metricSignature(metric *googlemetricpb.Metric) string {
+func metricSignature(metric *metricpb.Metric) string {
 	labels := metric.GetLabels()
 	labelValues := make([]string, 0, len(labels))
 
@@ -593,7 +592,7 @@ func newLabelDescriptors(defaults map[string]labelValue, keys []tag.Key) []*labe
 	return labelDescriptors
 }
 
-func (e *statsExporter) createMetricDescriptor(ctx context.Context, md *metric.MetricDescriptor) error {
+func (e *statsExporter) createMetricDescriptor(ctx context.Context, md *metricpb.MetricDescriptor) error {
 	ctx, cancel := newContextWithTimeout(ctx, e.o.Timeout)
 	defer cancel()
 	cmrdesc := &monitoringpb.CreateMetricDescriptorRequest{
@@ -604,7 +603,7 @@ func (e *statsExporter) createMetricDescriptor(ctx context.Context, md *metric.M
 	return err
 }
 
-var createMetricDescriptor = func(ctx context.Context, c *monitoring.MetricClient, mdr *monitoringpb.CreateMetricDescriptorRequest) (*metric.MetricDescriptor, error) {
+var createMetricDescriptor = func(ctx context.Context, c *monitoring.MetricClient, mdr *monitoringpb.CreateMetricDescriptorRequest) (*metricpb.MetricDescriptor, error) {
 	return c.CreateMetricDescriptor(ctx, mdr)
 }
 
diff --git a/trace.go b/trace.go
index a106613..9f196a8 100644
--- a/trace.go
+++ b/trace.go
@@ -22,10 +22,10 @@ import (
 	"time"
 
 	tracingclient "cloud.google.com/go/trace/apiv2"
-	"github.com/golang/protobuf/proto"
 	"go.opencensus.io/trace"
 	"google.golang.org/api/support/bundler"
 	tracepb "google.golang.org/genproto/googleapis/devtools/cloudtrace/v2"
+	"google.golang.org/protobuf/proto"
 
 	commonpb "github.com/census-instrumentation/opencensus-proto/gen-go/agent/common/v1"
 	resourcepb "github.com/census-instrumentation/opencensus-proto/gen-go/resource/v1"


Test patch:
diff --git a/internal/testpb/generate.sh b/internal/testpb/generate.sh
index 1120506..8e35a78 100755
--- a/internal/testpb/generate.sh
+++ b/internal/testpb/generate.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 # generate .pb.go file from .proto file.
 set -e
-protoc --go_out=plugins=grpc:. test.proto
+protoc --go_out=. --go-grpc_out=. test.proto
 echo '
 //go:generate ./generate.sh
 ' >> test.pb.go
diff --git a/internal/testpb/impl.go b/internal/testpb/impl.go
index f977cd0..28a73cd 100644
--- a/internal/testpb/impl.go
+++ b/internal/testpb/impl.go
@@ -62,6 +62,10 @@ func (s *testServer) Multiple(stream Foo_MultipleServer) error {
 	}
 }
 
+// mustEmbedUnimplementedFooServer is a dummy method added to satisfy
+// FooServer interface
+func (*testServer) mustEmbedUnimplementedFooServer() {}
+
 // NewTestClient is used for internal testing only. It creates a
 // grpc server and client. It returns client and cleanup function
 // to close the connection and gracefully stop the server.
diff --git a/internal/testpb/test.pb.go b/internal/testpb/test.pb.go
index 118e44a..e650d07 100644
--- a/internal/testpb/test.pb.go
+++ b/internal/testpb/test.pb.go
@@ -1,264 +1,222 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.25.0
+// 	protoc        v3.12.3
 // source: test.proto
 
 package testpb
 
 import (
-	context "context"
-	fmt "fmt"
-	math "math"
+	reflect "reflect"
+	sync "sync"
 
 	proto "github.com/golang/protobuf/proto"
-	grpc "google.golang.org/grpc"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 )
 
-// Reference imports to suppress errors if they are not otherwise used.
-var _ = proto.Marshal
-var _ = fmt.Errorf
-var _ = math.Inf
+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)
+)
 
-// 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
+// This is a compile-time assertion that a sufficiently up-to-date version
+// of the legacy proto package is being used.
+const _ = proto.ProtoPackageIsVersion4
 
 type FooRequest struct {
-	Fail                 bool     `protobuf:"varint,1,opt,name=fail,proto3" json:"fail,omitempty"`
-	SleepNanos           int64    `protobuf:"varint,2,opt,name=sleep_nanos,json=sleepNanos,proto3" json:"sleep_nanos,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
 
-func (m *FooRequest) Reset()         { *m = FooRequest{} }
-func (m *FooRequest) String() string { return proto.CompactTextString(m) }
-func (*FooRequest) ProtoMessage()    {}
-func (*FooRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_c161fcfdc0c3ff1e, []int{0}
+	Fail       bool  `protobuf:"varint,1,opt,name=fail,proto3" json:"fail,omitempty"`
+	SleepNanos int64 `protobuf:"varint,2,opt,name=sleep_nanos,json=sleepNanos,proto3" json:"sleep_nanos,omitempty"`
 }
 
-func (m *FooRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_FooRequest.Unmarshal(m, b)
-}
-func (m *FooRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_FooRequest.Marshal(b, m, deterministic)
-}
-func (m *FooRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_FooRequest.Merge(m, src)
-}
-func (m *FooRequest) XXX_Size() int {
-	return xxx_messageInfo_FooRequest.Size(m)
-}
-func (m *FooRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_FooRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_FooRequest proto.InternalMessageInfo
-
-func (m *FooRequest) GetFail() bool {
-	if m != nil {
-		return m.Fail
+func (x *FooRequest) Reset() {
+	*x = FooRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_test_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
 	}
-	return false
-}
-
-func (m *FooRequest) GetSleepNanos() int64 {
-	if m != nil {
-		return m.SleepNanos
-	}
-	return 0
-}
-
-type FooResponse struct {
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *FooResponse) Reset()         { *m = FooResponse{} }
-func (m *FooResponse) String() string { return proto.CompactTextString(m) }
-func (*FooResponse) ProtoMessage()    {}
-func (*FooResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_c161fcfdc0c3ff1e, []int{1}
-}
-
-func (m *FooResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_FooResponse.Unmarshal(m, b)
-}
-func (m *FooResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_FooResponse.Marshal(b, m, deterministic)
-}
-func (m *FooResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_FooResponse.Merge(m, src)
-}
-func (m *FooResponse) XXX_Size() int {
-	return xxx_messageInfo_FooResponse.Size(m)
-}
-func (m *FooResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_FooResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_FooResponse proto.InternalMessageInfo
-
-func init() {
-	proto.RegisterType((*FooRequest)(nil), "testpb.FooRequest")
-	proto.RegisterType((*FooResponse)(nil), "testpb.FooResponse")
 }
 
-func init() { proto.RegisterFile("test.proto", fileDescriptor_c161fcfdc0c3ff1e) }
-
-var fileDescriptor_c161fcfdc0c3ff1e = []byte{
-	// 165 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0xe2, 0x2a, 0x49, 0x2d, 0x2e,
-	0xd1, 0x2b, 0x28, 0xca, 0x2f, 0xc9, 0x17, 0x62, 0x03, 0xb1, 0x0b, 0x92, 0x94, 0x1c, 0xb9, 0xb8,
-	0xdc, 0xf2, 0xf3, 0x83, 0x52, 0x0b, 0x4b, 0x53, 0x8b, 0x4b, 0x84, 0x84, 0xb8, 0x58, 0xd2, 0x12,
-	0x33, 0x73, 0x24, 0x18, 0x15, 0x18, 0x35, 0x38, 0x82, 0xc0, 0x6c, 0x21, 0x79, 0x2e, 0xee, 0xe2,
-	0x9c, 0xd4, 0xd4, 0x82, 0xf8, 0xbc, 0xc4, 0xbc, 0xfc, 0x62, 0x09, 0x26, 0x05, 0x46, 0x0d, 0xe6,
-	0x20, 0x2e, 0xb0, 0x90, 0x1f, 0x48, 0x44, 0x89, 0x97, 0x8b, 0x1b, 0x6c, 0x44, 0x71, 0x41, 0x7e,
-	0x5e, 0x71, 0xaa, 0x51, 0x21, 0x17, 0xb3, 0x5b, 0x7e, 0xbe, 0x90, 0x21, 0x17, 0x5b, 0x70, 0x66,
-	0x5e, 0x7a, 0x4e, 0xaa, 0x90, 0x90, 0x1e, 0xc4, 0x2e, 0x3d, 0x84, 0x45, 0x52, 0xc2, 0x28, 0x62,
-	0x10, 0x9d, 0x42, 0xe6, 0x5c, 0x1c, 0xbe, 0xa5, 0x39, 0x25, 0x99, 0x05, 0x24, 0x68, 0xd2, 0x60,
-	0x34, 0x60, 0x4c, 0x62, 0x03, 0xfb, 0xc9, 0x18, 0x10, 0x00, 0x00, 0xff, 0xff, 0x37, 0xb1, 0x2d,
-	0x6e, 0xe1, 0x00, 0x00, 0x00,
+func (x *FooRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
 }
 
-// Reference imports to suppress errors if they are not otherwise used.
-var _ context.Context
-var _ grpc.ClientConn
-
-// This is a compile-time assertion to ensure that this generated file
-// is compatible with the grpc package it is being compiled against.
-const _ = grpc.SupportPackageIsVersion4
-
-// FooClient is the client API for Foo service.
-//
-// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
-type FooClient interface {
-	Single(ctx context.Context, in *FooRequest, opts ...grpc.CallOption) (*FooResponse, error)
-	Multiple(ctx context.Context, opts ...grpc.CallOption) (Foo_MultipleClient, error)
-}
+func (*FooRequest) ProtoMessage() {}
 
-type fooClient struct {
-	cc *grpc.ClientConn
+func (x *FooRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_test_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)
 }
 
-func NewFooClient(cc *grpc.ClientConn) FooClient {
-	return &fooClient{cc}
+// Deprecated: Use FooRequest.ProtoReflect.Descriptor instead.
+func (*FooRequest) Descriptor() ([]byte, []int) {
+	return file_test_proto_rawDescGZIP(), []int{0}
 }
 
-func (c *fooClient) Single(ctx context.Context, in *FooRequest, opts ...grpc.CallOption) (*FooResponse, error) {
-	out := new(FooResponse)
-	err := c.cc.Invoke(ctx, "/testpb.Foo/Single", in, out, opts...)
-	if err != nil {
-		return nil, err
+func (x *FooRequest) GetFail() bool {
+	if x != nil {
+		return x.Fail
 	}
-	return out, nil
+	return false
 }
 
-func (c *fooClient) Multiple(ctx context.Context, opts ...grpc.CallOption) (Foo_MultipleClient, error) {
-	stream, err := c.cc.NewStream(ctx, &_Foo_serviceDesc.Streams[0], "/testpb.Foo/Multiple", opts...)
-	if err != nil {
-		return nil, err
+func (x *FooRequest) GetSleepNanos() int64 {
+	if x != nil {
+		return x.SleepNanos
 	}
-	x := &fooMultipleClient{stream}
-	return x, nil
-}
-
-type Foo_MultipleClient interface {
-	Send(*FooRequest) error
-	Recv() (*FooResponse, error)
-	grpc.ClientStream
-}
-
-type fooMultipleClient struct {
-	grpc.ClientStream
+	return 0
 }
 
-func (x *fooMultipleClient) Send(m *FooRequest) error {
-	return x.ClientStream.SendMsg(m)
+type FooResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
 }
 
-func (x *fooMultipleClient) Recv() (*FooResponse, error) {
-	m := new(FooResponse)
-	if err := x.ClientStream.RecvMsg(m); err != nil {
-		return nil, err
+func (x *FooResponse) Reset() {
+	*x = FooResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_test_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
 	}
-	return m, nil
 }
 
-// FooServer is the server API for Foo service.
-type FooServer interface {
-	Single(context.Context, *FooRequest) (*FooResponse, error)
-	Multiple(Foo_MultipleServer) error
+func (x *FooResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
 }
 
-func RegisterFooServer(s *grpc.Server, srv FooServer) {
-	s.RegisterService(&_Foo_serviceDesc, srv)
-}
+func (*FooResponse) ProtoMessage() {}
 
-func _Foo_Single_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(FooRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(FooServer).Single(ctx, in)
+func (x *FooResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_test_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
 	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: "/testpb.Foo/Single",
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(FooServer).Single(ctx, req.(*FooRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
-func _Foo_Multiple_Handler(srv interface{}, stream grpc.ServerStream) error {
-	return srv.(FooServer).Multiple(&fooMultipleServer{stream})
-}
-
-type Foo_MultipleServer interface {
-	Send(*FooResponse) error
-	Recv() (*FooRequest, error)
-	grpc.ServerStream
-}
-
-type fooMultipleServer struct {
-	grpc.ServerStream
+	return mi.MessageOf(x)
 }
 
-func (x *fooMultipleServer) Send(m *FooResponse) error {
-	return x.ServerStream.SendMsg(m)
-}
+// Deprecated: Use FooResponse.ProtoReflect.Descriptor instead.
+func (*FooResponse) Descriptor() ([]byte, []int) {
+	return file_test_proto_rawDescGZIP(), []int{1}
+}
+
+var File_test_proto protoreflect.FileDescriptor
+
+var file_test_proto_rawDesc = []byte{
+	0x0a, 0x0a, 0x74, 0x65, 0x73, 0x74, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x06, 0x74, 0x65,
+	0x73, 0x74, 0x70, 0x62, 0x22, 0x41, 0x0a, 0x0a, 0x46, 0x6f, 0x6f, 0x52, 0x65, 0x71, 0x75, 0x65,
+	0x73, 0x74, 0x12, 0x12, 0x0a, 0x04, 0x66, 0x61, 0x69, 0x6c, 0x18, 0x01, 0x20, 0x01, 0x28, 0x08,
+	0x52, 0x04, 0x66, 0x61, 0x69, 0x6c, 0x12, 0x1f, 0x0a, 0x0b, 0x73, 0x6c, 0x65, 0x65, 0x70, 0x5f,
+	0x6e, 0x61, 0x6e, 0x6f, 0x73, 0x18, 0x02, 0x20, 0x01, 0x28, 0x03, 0x52, 0x0a, 0x73, 0x6c, 0x65,
+	0x65, 0x70, 0x4e, 0x61, 0x6e, 0x6f, 0x73, 0x22, 0x0d, 0x0a, 0x0b, 0x46, 0x6f, 0x6f, 0x52, 0x65,
+	0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x32, 0x71, 0x0a, 0x03, 0x46, 0x6f, 0x6f, 0x12, 0x31, 0x0a,
+	0x06, 0x53, 0x69, 0x6e, 0x67, 0x6c, 0x65, 0x12, 0x12, 0x2e, 0x74, 0x65, 0x73, 0x74, 0x70, 0x62,
+	0x2e, 0x46, 0x6f, 0x6f, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x13, 0x2e, 0x74, 0x65,
+	0x73, 0x74, 0x70, 0x62, 0x2e, 0x46, 0x6f, 0x6f, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65,
+	0x12, 0x37, 0x0a, 0x08, 0x4d, 0x75, 0x6c, 0x74, 0x69, 0x70, 0x6c, 0x65, 0x12, 0x12, 0x2e, 0x74,
+	0x65, 0x73, 0x74, 0x70, 0x62, 0x2e, 0x46, 0x6f, 0x6f, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74,
+	0x1a, 0x13, 0x2e, 0x74, 0x65, 0x73, 0x74, 0x70, 0x62, 0x2e, 0x46, 0x6f, 0x6f, 0x52, 0x65, 0x73,
+	0x70, 0x6f, 0x6e, 0x73, 0x65, 0x28, 0x01, 0x30, 0x01, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f,
+	0x33,
+}
+
+var (
+	file_test_proto_rawDescOnce sync.Once
+	file_test_proto_rawDescData = file_test_proto_rawDesc
+)
 
-func (x *fooMultipleServer) Recv() (*FooRequest, error) {
-	m := new(FooRequest)
-	if err := x.ServerStream.RecvMsg(m); err != nil {
-		return nil, err
+func file_test_proto_rawDescGZIP() []byte {
+	file_test_proto_rawDescOnce.Do(func() {
+		file_test_proto_rawDescData = protoimpl.X.CompressGZIP(file_test_proto_rawDescData)
+	})
+	return file_test_proto_rawDescData
+}
+
+var file_test_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
+var file_test_proto_goTypes = []interface{}{
+	(*FooRequest)(nil),  // 0: testpb.FooRequest
+	(*FooResponse)(nil), // 1: testpb.FooResponse
+}
+var file_test_proto_depIdxs = []int32{
+	0, // 0: testpb.Foo.Single:input_type -> testpb.FooRequest
+	0, // 1: testpb.Foo.Multiple:input_type -> testpb.FooRequest
+	1, // 2: testpb.Foo.Single:output_type -> testpb.FooResponse
+	1, // 3: testpb.Foo.Multiple:output_type -> testpb.FooResponse
+	2, // [2:4] is the sub-list for method output_type
+	0, // [0:2] is the sub-list for method input_type
+	0, // [0:0] is the sub-list for extension type_name
+	0, // [0:0] is the sub-list for extension extendee
+	0, // [0:0] is the sub-list for field type_name
+}
+
+func init() { file_test_proto_init() }
+func file_test_proto_init() {
+	if File_test_proto != nil {
+		return
 	}
-	return m, nil
-}
-
-var _Foo_serviceDesc = grpc.ServiceDesc{
-	ServiceName: "testpb.Foo",
-	HandlerType: (*FooServer)(nil),
-	Methods: []grpc.MethodDesc{
-		{
-			MethodName: "Single",
-			Handler:    _Foo_Single_Handler,
-		},
-	},
-	Streams: []grpc.StreamDesc{
-		{
-			StreamName:    "Multiple",
-			Handler:       _Foo_Multiple_Handler,
-			ServerStreams: true,
-			ClientStreams: true,
+	if !protoimpl.UnsafeEnabled {
+		file_test_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*FooRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_test_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*FooResponse); 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_test_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   2,
+			NumExtensions: 0,
+			NumServices:   1,
 		},
-	},
-	Metadata: "test.proto",
+		GoTypes:           file_test_proto_goTypes,
+		DependencyIndexes: file_test_proto_depIdxs,
+		MessageInfos:      file_test_proto_msgTypes,
+	}.Build()
+	File_test_proto = out.File
+	file_test_proto_rawDesc = nil
+	file_test_proto_goTypes = nil
+	file_test_proto_depIdxs = nil
 }
 
 //go:generate ./generate.sh
diff --git a/internal/testpb/test_grpc.pb.go b/internal/testpb/test_grpc.pb.go
new file mode 100644
index 0000000..e36e456
--- /dev/null
+++ b/internal/testpb/test_grpc.pb.go
@@ -0,0 +1,167 @@
+// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
+
+package testpb
+
+import (
+	context "context"
+
+	grpc "google.golang.org/grpc"
+	codes "google.golang.org/grpc/codes"
+	status "google.golang.org/grpc/status"
+)
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+const _ = grpc.SupportPackageIsVersion7
+
+// FooClient is the client API for Foo service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
+type FooClient interface {
+	Single(ctx context.Context, in *FooRequest, opts ...grpc.CallOption) (*FooResponse, error)
+	Multiple(ctx context.Context, opts ...grpc.CallOption) (Foo_MultipleClient, error)
+}
+
+type fooClient struct {
+	cc grpc.ClientConnInterface
+}
+
+func NewFooClient(cc grpc.ClientConnInterface) FooClient {
+	return &fooClient{cc}
+}
+
+func (c *fooClient) Single(ctx context.Context, in *FooRequest, opts ...grpc.CallOption) (*FooResponse, error) {
+	out := new(FooResponse)
+	err := c.cc.Invoke(ctx, "/testpb.Foo/Single", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *fooClient) Multiple(ctx context.Context, opts ...grpc.CallOption) (Foo_MultipleClient, error) {
+	stream, err := c.cc.NewStream(ctx, &_Foo_serviceDesc.Streams[0], "/testpb.Foo/Multiple", opts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &fooMultipleClient{stream}
+	return x, nil
+}
+
+type Foo_MultipleClient interface {
+	Send(*FooRequest) error
+	Recv() (*FooResponse, error)
+	grpc.ClientStream
+}
+
+type fooMultipleClient struct {
+	grpc.ClientStream
+}
+
+func (x *fooMultipleClient) Send(m *FooRequest) error {
+	return x.ClientStream.SendMsg(m)
+}
+
+func (x *fooMultipleClient) Recv() (*FooResponse, error) {
+	m := new(FooResponse)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+// FooServer is the server API for Foo service.
+// All implementations must embed UnimplementedFooServer
+// for forward compatibility
+type FooServer interface {
+	Single(context.Context, *FooRequest) (*FooResponse, error)
+	Multiple(Foo_MultipleServer) error
+	mustEmbedUnimplementedFooServer()
+}
+
+// UnimplementedFooServer must be embedded to have forward compatible implementations.
+type UnimplementedFooServer struct {
+}
+
+func (UnimplementedFooServer) Single(context.Context, *FooRequest) (*FooResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Single not implemented")
+}
+func (UnimplementedFooServer) Multiple(Foo_MultipleServer) error {
+	return status.Errorf(codes.Unimplemented, "method Multiple not implemented")
+}
+func (UnimplementedFooServer) mustEmbedUnimplementedFooServer() {}
+
+// UnsafeFooServer may be embedded to opt out of forward compatibility for this service.
+// Use of this interface is not recommended, as added methods to FooServer will
+// result in compilation errors.
+type UnsafeFooServer interface {
+	mustEmbedUnimplementedFooServer()
+}
+
+func RegisterFooServer(s grpc.ServiceRegistrar, srv FooServer) {
+	s.RegisterService(&_Foo_serviceDesc, srv)
+}
+
+func _Foo_Single_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(FooRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(FooServer).Single(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/testpb.Foo/Single",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(FooServer).Single(ctx, req.(*FooRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Foo_Multiple_Handler(srv interface{}, stream grpc.ServerStream) error {
+	return srv.(FooServer).Multiple(&fooMultipleServer{stream})
+}
+
+type Foo_MultipleServer interface {
+	Send(*FooResponse) error
+	Recv() (*FooRequest, error)
+	grpc.ServerStream
+}
+
+type fooMultipleServer struct {
+	grpc.ServerStream
+}
+
+func (x *fooMultipleServer) Send(m *FooResponse) error {
+	return x.ServerStream.SendMsg(m)
+}
+
+func (x *fooMultipleServer) Recv() (*FooRequest, error) {
+	m := new(FooRequest)
+	if err := x.ServerStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+var _Foo_serviceDesc = grpc.ServiceDesc{
+	ServiceName: "testpb.Foo",
+	HandlerType: (*FooServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "Single",
+			Handler:    _Foo_Single_Handler,
+		},
+	},
+	Streams: []grpc.StreamDesc{
+		{
+			StreamName:    "Multiple",
+			Handler:       _Foo_Multiple_Handler,
+			ServerStreams: true,
+			ClientStreams: true,
+		},
+	},
+	Metadata: "test.proto",
+}
diff --git a/metrics_batcher_test.go b/metrics_batcher_test.go
index e8fdc20..d98ab13 100644
--- a/metrics_batcher_test.go
+++ b/metrics_batcher_test.go
@@ -20,7 +20,7 @@ import (
 	"fmt"
 	"testing"
 
-	monitoring "cloud.google.com/go/monitoring/apiv3"
+	monitoring "cloud.google.com/go/monitoring/apiv3/v2"
 	"google.golang.org/api/option"
 	googlemetricpb "google.golang.org/genproto/googleapis/api/metric"
 	monitoringpb "google.golang.org/genproto/googleapis/monitoring/v3"
diff --git a/metrics_proto_api_test.go b/metrics_proto_api_test.go
index 7e29d2e..f098c59 100644
--- a/metrics_proto_api_test.go
+++ b/metrics_proto_api_test.go
@@ -23,14 +23,12 @@ import (
 	"testing"
 
 	"github.com/google/go-cmp/cmp"
-	"github.com/google/go-cmp/cmp/cmpopts"
 
-	"github.com/golang/protobuf/proto"
 	"github.com/golang/protobuf/ptypes/empty"
-	"github.com/golang/protobuf/ptypes/timestamp"
 	"google.golang.org/api/option"
+	"google.golang.org/protobuf/encoding/prototext"
+	"google.golang.org/protobuf/testing/protocmp"
 
-	labelpb "google.golang.org/genproto/googleapis/api/label"
 	googlemetricpb "google.golang.org/genproto/googleapis/api/metric"
 	monitoredrespb "google.golang.org/genproto/googleapis/api/monitoredres"
 	monitoringpb "google.golang.org/genproto/googleapis/monitoring/v3"
@@ -430,7 +428,7 @@ func readTestCaseFromFiles(t *testing.T, filename string) *testCases {
 	strMetrics := strings.Split(string(f), "---")
 	for _, strMetric := range strMetrics {
 		in := metricspb.Metric{}
-		err = proto.UnmarshalText(strMetric, &in)
+		err = prototext.Unmarshal([]byte(strMetric), &in)
 		if err != nil {
 			t.Fatalf("error unmarshalling Metric protos from file " + filename)
 		}
@@ -446,7 +444,7 @@ func readTestCaseFromFiles(t *testing.T, filename string) *testCases {
 	strOutMDRs := strings.Split(string(f), "---")
 	for _, strOutMDR := range strOutMDRs {
 		outMDR := monitoringpb.CreateMetricDescriptorRequest{}
-		err = proto.UnmarshalText(strOutMDR, &outMDR)
+		err = prototext.Unmarshal([]byte(strOutMDR), &outMDR)
 		if err != nil {
 			t.Fatalf("error unmarshalling CreateMetricDescriptorRequest protos from file " + filename)
 		}
@@ -464,7 +462,7 @@ func readTestCaseFromFiles(t *testing.T, filename string) *testCases {
 	strOutTSRs := strings.Split(string(f), "---")
 	for _, strOutTSR := range strOutTSRs {
 		outTSR := monitoringpb.CreateTimeSeriesRequest{}
-		err = proto.UnmarshalText(strOutTSR, &outTSR)
+		err = prototext.Unmarshal([]byte(strOutTSR), &outTSR)
 		if err != nil {
 			t.Fatalf("error unmarshalling CreateTimeSeriesRequest protos from file " + filename)
 		}
@@ -484,7 +482,7 @@ func readTestResourcesFiles(t *testing.T, filename string) ([]*resourcepb.Resour
 	strResources := strings.Split(string(f), "---")
 	for _, strRes := range strResources {
 		inRes := resourcepb.Resource{}
-		err = proto.UnmarshalText(strRes, &inRes)
+		err = prototext.Unmarshal([]byte(strRes), &inRes)
 		if err != nil {
 			t.Fatalf("error unmarshalling input Resource protos from file " + filename)
 		}
@@ -501,7 +499,7 @@ func readTestResourcesFiles(t *testing.T, filename string) ([]*resourcepb.Resour
 	strResources = strings.Split(string(f), "---")
 	for _, strRes := range strResources {
 		outRes := monitoredrespb.MonitoredResource{}
-		err = proto.UnmarshalText(strRes, &outRes)
+		err = prototext.Unmarshal([]byte(strRes), &outRes)
 		if err != nil {
 			t.Fatalf("error unmarshalling output Resource protos from file " + filename)
 		}
@@ -593,7 +591,7 @@ func requireTimeSeriesRequestEqual(t *testing.T, got, want []*monitoringpb.Creat
 	}
 	for i, g := range got {
 		w := want[i]
-		diff = cmp.Diff(g, w, cmpopts.IgnoreFields(timestamp.Timestamp{}, "XXX_sizecache"))
+		diff = cmp.Diff(g, w, protocmp.Transform())
 		if diff != "" {
 			return diff, i
 		}
@@ -610,9 +608,7 @@ func requireMetricDescriptorRequestEqual(t *testing.T, got, want []*monitoringpb
 	}
 	for i, g := range got {
 		w := want[i]
-		diff = cmp.Diff(g, w,
-			cmpopts.IgnoreFields(labelpb.LabelDescriptor{}, "XXX_sizecache"),
-			cmpopts.IgnoreFields(googlemetricpb.MetricDescriptor{}, "XXX_sizecache"))
+		diff = cmp.Diff(g, w, protocmp.Transform())
 		if diff != "" {
 			return diff, i
 		}
diff --git a/metrics_proto_test.go b/metrics_proto_test.go
index 0bd6fa5..75f113b 100644
--- a/metrics_proto_test.go
+++ b/metrics_proto_test.go
@@ -29,6 +29,7 @@ import (
 	monitoredrespb "google.golang.org/genproto/googleapis/api/monitoredres"
 	monitoringpb "google.golang.org/genproto/googleapis/monitoring/v3"
 	"google.golang.org/grpc"
+	"google.golang.org/protobuf/testing/protocmp"
 
 	metricspb "github.com/census-instrumentation/opencensus-proto/gen-go/metrics/v1"
 	"github.com/golang/protobuf/ptypes/wrappers"
@@ -995,7 +996,7 @@ func TestConvertSummaryMetrics(t *testing.T) {
 			se = new(statsExporter)
 		}
 		got := se.convertSummaryMetrics(tt.in)
-		if !cmp.Equal(got, tt.want) {
+		if !cmp.Equal(got, tt.want, protocmp.Transform()) {
 			t.Fatalf("conversion failed:\n  got=%v\n want=%v\n", got, tt.want)
 		}
 	}
diff --git a/metrics_test.go b/metrics_test.go
index 9d52db7..4c8eb45 100644
--- a/metrics_test.go
+++ b/metrics_test.go
@@ -20,10 +20,10 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/golang/protobuf/proto"
 	"github.com/golang/protobuf/ptypes"
 	"github.com/golang/protobuf/ptypes/any"
 	"github.com/golang/protobuf/ptypes/timestamp"
+	"google.golang.org/protobuf/proto"
 
 	distributionpb "google.golang.org/genproto/googleapis/api/distribution"
 	labelpb "google.golang.org/genproto/googleapis/api/label"
diff --git a/metrics_utils_test.go b/metrics_utils_test.go
index daf687b..4cc3710 100644
--- a/metrics_utils_test.go
+++ b/metrics_utils_test.go
@@ -21,13 +21,15 @@ Common test utilities for comparing Stackdriver metrics.
 import (
 	"testing"
 
-	"github.com/golang/protobuf/proto"
 	"github.com/google/go-cmp/cmp"
 	"github.com/google/go-cmp/cmp/cmpopts"
+	"google.golang.org/protobuf/encoding/prototext"
+	"google.golang.org/protobuf/proto"
 
 	googlemetricpb "google.golang.org/genproto/googleapis/api/metric"
 	monitoredrespb "google.golang.org/genproto/googleapis/api/monitoredres"
 	monitoringpb "google.golang.org/genproto/googleapis/monitoring/v3"
+	"google.golang.org/protobuf/testing/protocmp"
 )
 
 func cmpResource(got, want *monitoredrespb.MonitoredResource) string {
@@ -41,27 +43,35 @@ func requireTimeSeriesRequestEqual(t *testing.T, got, want []*monitoringpb.Creat
 	for i, g := range got {
 		w := want[i]
 		if !proto.Equal(g, w) {
-			t.Fatalf("Unexpected proto difference got: %s want: %s", proto.MarshalTextString(g), proto.MarshalTextString(w))
+			gBytes, err := prototext.Marshal(g)
+			if err != nil {
+				t.Fatalf("Error marshaling time series: %s", err)
+			}
+			wBytes, err := prototext.Marshal(w)
+			if err != nil {
+				t.Fatalf("Error marshaling time series: %s", err)
+			}
+			t.Fatalf("Unexpected proto difference got: %s want: %s", string(gBytes), string(wBytes))
 		}
 	}
 }
 
 func cmpTSReqs(got, want []*monitoringpb.CreateTimeSeriesRequest) string {
-	return cmp.Diff(got, want, cmpopts.IgnoreUnexported(monitoringpb.CreateTimeSeriesRequest{}), cmpopts.IgnoreTypes(googlemetricpb.MetricDescriptor_METRIC_KIND_UNSPECIFIED, googlemetricpb.MetricDescriptor_VALUE_TYPE_UNSPECIFIED))
+	return cmp.Diff(got, want, protocmp.Transform(), protocmp.IgnoreEnums(googlemetricpb.MetricDescriptor_METRIC_KIND_UNSPECIFIED, googlemetricpb.MetricDescriptor_VALUE_TYPE_UNSPECIFIED))
 }
 
 func cmpMD(got, want *googlemetricpb.MetricDescriptor) string {
-	return cmp.Diff(got, want, cmpopts.IgnoreUnexported(googlemetricpb.MetricDescriptor{}))
+	return cmp.Diff(got, want, protocmp.Transform())
 }
 
 func cmpMDReq(got, want *monitoringpb.CreateMetricDescriptorRequest) string {
-	return cmp.Diff(got, want, cmpopts.IgnoreUnexported(monitoringpb.CreateMetricDescriptorRequest{}))
+	return cmp.Diff(got, want, protocmp.Transform())
 }
 
 func cmpMDReqs(got, want []*monitoringpb.CreateMetricDescriptorRequest) string {
-	return cmp.Diff(got, want, cmpopts.IgnoreUnexported(monitoringpb.CreateMetricDescriptorRequest{}))
+	return cmp.Diff(got, want, protocmp.Transform())
 }
 
 func cmpPoint(got, want *monitoringpb.Point) string {
-	return cmp.Diff(got, want, cmpopts.IgnoreUnexported(monitoringpb.Point{}))
+	return cmp.Diff(got, want, protocmp.Transform())
 }
diff --git a/resource_test.go b/resource_test.go
index 87341a7..94613bf 100644
--- a/resource_test.go
+++ b/resource_test.go
@@ -25,6 +25,7 @@ import (
 	"go.opencensus.io/resource"
 	"go.opencensus.io/resource/resourcekeys"
 	monitoredrespb "google.golang.org/genproto/googleapis/api/monitoredres"
+	"google.golang.org/protobuf/testing/protocmp"
 )
 
 func TestDefaultMapResource(t *testing.T) {
@@ -476,7 +477,7 @@ func TestDefaultMapResource(t *testing.T) {
 			}
 
 			got := DefaultMapResource(c.input)
-			if diff := cmp.Diff(got, c.want); diff != "" {
+			if diff := cmp.Diff(got, c.want, protocmp.Transform()); diff != "" {
 				t.Errorf("Values differ -got +want: %s", diff)
 			}
 		})
diff --git a/stats_test.go b/stats_test.go
index 558d21e..70544f0 100644
--- a/stats_test.go
+++ b/stats_test.go
@@ -20,7 +20,7 @@ import (
 	"testing"
 	"time"
 
-	monitoring "cloud.google.com/go/monitoring/apiv3"
+	monitoring "cloud.google.com/go/monitoring/apiv3/v2"
 	"contrib.go.opencensus.io/exporter/stackdriver/monitoredresource"
 
 	"github.com/golang/protobuf/ptypes/timestamp"
@@ -30,11 +30,11 @@ import (
 	"go.opencensus.io/tag"
 	"google.golang.org/api/option"
 	"google.golang.org/genproto/googleapis/api/distribution"
-	"google.golang.org/genproto/googleapis/api/metric"
 	metricpb "google.golang.org/genproto/googleapis/api/metric"
 	monitoredrespb "google.golang.org/genproto/googleapis/api/monitoredres"
 	monitoringpb "google.golang.org/genproto/googleapis/monitoring/v3"
 	"google.golang.org/grpc"
+	"google.golang.org/protobuf/testing/protocmp"
 )
 
 var authOptions = []option.ClientOption{option.WithGRPCConn(&grpc.ClientConn{})}
@@ -487,7 +487,7 @@ func TestExporter_makeReq(t *testing.T) {
 			if len(tt.want) == 0 {
 				return
 			}
-			if diff := cmp.Diff(resps, tt.want); diff != "" {
+			if diff := cmp.Diff(resps, tt.want, protocmp.Transform()); diff != "" {
 				t.Errorf("Values differ -got +want: %s", diff)
 			}
 		})
@@ -622,7 +622,7 @@ func TestExporter_createMetricDescriptorFromView(t *testing.T) {
 			}
 
 			var createCalls int
-			createMetricDescriptor = func(ctx context.Context, c *monitoring.MetricClient, mdr *monitoringpb.CreateMetricDescriptorRequest) (*metric.MetricDescriptor, error) {
+			createMetricDescriptor = func(ctx context.Context, c *monitoring.MetricClient, mdr *monitoringpb.CreateMetricDescriptorRequest) (*metricpb.MetricDescriptor, error) {
 				createCalls++
 				if got, want := mdr.MetricDescriptor.Name, "projects/test_project/metricDescriptors/custom.googleapis.com/opencensus/test_view_sum"; got != want {
 					t.Errorf("MetricDescriptor.Name = %q; want %q", got, want)
@@ -645,7 +645,7 @@ func TestExporter_createMetricDescriptorFromView(t *testing.T) {
 				if got, want := mdr.MetricDescriptor.Unit, stats.UnitMilliseconds; got != want {
 					t.Errorf("MetricDescriptor.Unit = %q; want %q", got, want)
 				}
-				return &metric.MetricDescriptor{
+				return &metricpb.MetricDescriptor{
 					DisplayName: "OpenCensus/test_view_sum",
 					Description: "view_description",
 					Unit:        stats.UnitMilliseconds,
@@ -699,7 +699,7 @@ func TestExporter_createMetricDescriptorFromView_CountAggregation(t *testing.T)
 		o:                 Options{ProjectID: "test_project"},
 	}
 
-	createMetricDescriptor = func(ctx context.Context, c *monitoring.MetricClient, mdr *monitoringpb.CreateMetricDescriptorRequest) (*metric.MetricDescriptor, error) {
+	createMetricDescriptor = func(ctx context.Context, c *monitoring.MetricClient, mdr *monitoringpb.CreateMetricDescriptorRequest) (*metricpb.MetricDescriptor, error) {
 		if got, want := mdr.MetricDescriptor.Name, "projects/test_project/metricDescriptors/custom.googleapis.com/opencensus/test_view_count"; got != want {
 			t.Errorf("MetricDescriptor.Name = %q; want %q", got, want)
 		}
@@ -721,7 +721,7 @@ func TestExporter_createMetricDescriptorFromView_CountAggregation(t *testing.T)
 		if got, want := mdr.MetricDescriptor.Unit, stats.UnitDimensionless; got != want {
 			t.Errorf("MetricDescriptor.Unit = %q; want %q", got, want)
 		}
-		return &metric.MetricDescriptor{
+		return &metricpb.MetricDescriptor{
 			DisplayName: "OpenCensus/test_view_sum",
 			Description: "view_description",
 			Unit:        stats.UnitDimensionless,
@@ -1079,7 +1079,7 @@ func TestExporter_makeReq_withCustomMonitoredResource(t *testing.T) {
 			if len(tt.want) == 0 {
 				return
 			}
-			if diff := cmp.Diff(resps, tt.want); diff != "" {
+			if diff := cmp.Diff(resps, tt.want, protocmp.Transform()); diff != "" {
 				t.Errorf("Requests differ, -got +want: %s", diff)
 			}
 		})
@@ -1096,14 +1096,14 @@ func TestExporter_customContext(t *testing.T) {
 	}()
 
 	var timedOut = 0
-	createMetricDescriptor = func(ctx context.Context, c *monitoring.MetricClient, mdr *monitoringpb.CreateMetricDescriptorRequest) (*metric.MetricDescriptor, error) {
+	createMetricDescriptor = func(ctx context.Context, c *monitoring.MetricClient, mdr *monitoringpb.CreateMetricDescriptorRequest) (*metricpb.MetricDescriptor, error) {
 		select {
 		case <-time.After(1 * time.Second):
 			fmt.Println("createMetricDescriptor did not time out")
 		case <-ctx.Done():
 			timedOut++
 		}
-		return &metric.MetricDescriptor{}, nil
+		return &metricpb.MetricDescriptor{}, nil
 	}
 	createTimeSeries = func(ctx context.Context, c *monitoring.MetricClient, ts *monitoringpb.CreateTimeSeriesRequest) error {
 		select {
diff --git a/trace_proto_test.go b/trace_proto_test.go
index 85d5343..c759a54 100644
--- a/trace_proto_test.go
+++ b/trace_proto_test.go
@@ -24,7 +24,6 @@ import (
 	"testing"
 	"time"
 
-	"github.com/golang/protobuf/proto"
 	timestamppb "github.com/golang/protobuf/ptypes/timestamp"
 	wrapperspb "github.com/golang/protobuf/ptypes/wrappers"
 	"go.opencensus.io/trace"
@@ -32,6 +31,7 @@ import (
 	tracepb "google.golang.org/genproto/googleapis/devtools/cloudtrace/v2"
 	codepb "google.golang.org/genproto/googleapis/rpc/code"
 	statuspb "google.golang.org/genproto/googleapis/rpc/status"
+	"google.golang.org/protobuf/encoding/prototext"
 )
 
 var (
@@ -324,10 +324,18 @@ func TestExportTrace(t *testing.T) {
 	if !reflect.DeepEqual(spbs, expectedSpans) {
 		var got, want []string
 		for _, s := range spbs {
-			got = append(got, proto.MarshalTextString(s))
+			bytes, err := prototext.Marshal(s)
+			if err != nil {
+				t.Fatalf("Error marshalling span: %s", err)
+			}
+			got = append(got, string(bytes))
 		}
 		for _, s := range expectedSpans {
-			want = append(want, proto.MarshalTextString(s))
+			bytes, err := prototext.Marshal(s)
+			if err != nil {
+				t.Fatalf("Error marshalling span: %s", err)
+			}
+			want = append(want, string(bytes))
 		}
 		t.Errorf("got spans:\n%s\nwant:\n%s", strings.Join(got, "\n"), strings.Join(want, "\n"))
 	}