Update codes to match specification (#1214)

* Update codes to match specification * Add changes to changelog * go mod tidy * Add unit tests for codes * Update SetStatus methods to only filter Unset * Update apitest code being tested
2024-11-28 08:38:51 +02:00 · 2020-10-05 11:36:03 -07:00 · 2020-10-05 11:36:03 -07:00 · 577b21745b
commit 577b21745b
parent e9c80e62a4
36 changed files with 327 additions and 636 deletions
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@ -11,6 +11,7 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 ### Added

 - OTLP Metric exporter supports Histogram aggregation. (#1209)
+- The `Code` struct from the `go.opentelemetry.io/otel/codes` package now supports JSON marshaling and unmarshaling as well as implements the `Stringer` interface. (#1214)
 - A Baggage API to implement the OpenTelemetry specification. (#1217)

 ### Changed
@ -18,6 +19,10 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 - Set default propagator to no-op propagator. (#1184)
 - The `HTTPSupplier`, `HTTPExtractor`, `HTTPInjector`, and `HTTPPropagator` from the `go.opentelemetry.io/otel/api/propagation` package were replaced with unified `TextMapCarrier` and `TextMapPropagator` in the `go.opentelemetry.io/otel` package. (#1212)
 - The `New` function from the `go.opentelemetry.io/otel/api/propagation` package was replaced with `NewCompositeTextMapPropagator` in the `go.opentelemetry.io/otel` package. (#1212)
+- The status codes of the `go.opentelemetry.io/otel/codes` package have been updated to match the latest OpenTelemetry specification.
+   They now are `Unset`, `Error`, and `Ok`.
+   They no longer track the gRPC codes. (#1214)
+- The `StatusCode` field of the `SpanData` struct in the `go.opentelemetry.io/otel/sdk/export/trace` package now uses the codes package from this package instead of the gRPC project. (#1214)
 - Move the `go.opentelemetry.io/otel/api/baggage` package into `go.opentelemetry.io/otel/propagators`. (#1217)

 ### Removed
--- a/api/apitest/harness.go
+++ b/api/apitest/harness.go
@ -189,7 +189,7 @@ func (h *Harness) testSpan(tracerFactory func() trace.Tracer) {
 			span.AddEventWithTimestamp(context.Background(), time.Now(), "test event")
 		},
 		"#SetStatus": func(span trace.Span) {
-			span.SetStatus(codes.Internal, "internal")
+			span.SetStatus(codes.Error, "internal")
 		},
 		"#SetName": func(span trace.Span) {
 			span.SetName("new name")
--- a/api/trace/tracetest/span.go
+++ b/api/trace/tracetest/span.go
@ -89,7 +89,7 @@ func (s *Span) RecordError(ctx context.Context, err error, opts ...trace.ErrorOp
 		cfg.Timestamp = time.Now()
 	}

-	if cfg.StatusCode != codes.OK {
+	if cfg.StatusCode != codes.Unset {
 		s.SetStatus(cfg.StatusCode, "")
 	}

--- a/api/trace/tracetest/span_test.go
+++ b/api/trace/tracetest/span_test.go
@ -167,7 +167,7 @@ func TestSpan(t *testing.T) {
 					},
 				}}
 				e.Expect(subject.Events()).ToEqual(expectedEvents)
-				e.Expect(subject.StatusCode()).ToEqual(codes.OK)
+				e.Expect(subject.StatusCode()).ToEqual(codes.Unset)
 				e.Expect(subject.StatusMessage()).ToEqual("")
 			}
 		})
@ -186,7 +186,7 @@ func TestSpan(t *testing.T) {
 			errMsg := "test error message"
 			testErr := ottest.NewTestError(errMsg)
 			testTime := time.Now()
-			expStatusCode := codes.Unknown
+			expStatusCode := codes.Error
 			subject.RecordError(ctx, testErr, trace.WithErrorTime(testTime), trace.WithErrorStatus(expStatusCode))

 			expectedEvents := []tracetest.Event{{
@ -538,31 +538,17 @@ func TestSpan(t *testing.T) {
 			subject, ok := span.(*tracetest.Span)
 			e.Expect(ok).ToBeTrue()

-			e.Expect(subject.StatusCode()).ToEqual(codes.OK)
+			e.Expect(subject.StatusCode()).ToEqual(codes.Unset)

 			subject.End()

-			e.Expect(subject.StatusCode()).ToEqual(codes.OK)
+			e.Expect(subject.StatusCode()).ToEqual(codes.Unset)
 		})

 		statuses := []codes.Code{
-			codes.OK,
-			codes.Canceled,
-			codes.Unknown,
-			codes.InvalidArgument,
-			codes.DeadlineExceeded,
-			codes.NotFound,
-			codes.AlreadyExists,
-			codes.PermissionDenied,
-			codes.ResourceExhausted,
-			codes.FailedPrecondition,
-			codes.Aborted,
-			codes.OutOfRange,
-			codes.Unimplemented,
-			codes.Internal,
-			codes.Unavailable,
-			codes.DataLoss,
-			codes.Unauthenticated,
+			codes.Unset,
+			codes.Error,
+			codes.Ok,
 		}

 		for _, status := range statuses {
@ -577,7 +563,7 @@ func TestSpan(t *testing.T) {
 				subject, ok := span.(*tracetest.Span)
 				e.Expect(ok).ToBeTrue()

-				subject.SetStatus(codes.OK, "OK")
+				subject.SetStatus(codes.Ok, "Ok")
 				subject.SetStatus(status, "Yo!")

 				e.Expect(subject.StatusCode()).ToEqual(status)
@ -595,7 +581,7 @@ func TestSpan(t *testing.T) {
 				subject, ok := span.(*tracetest.Span)
 				e.Expect(ok).ToBeTrue()

-				originalStatus := codes.OK
+				originalStatus := codes.Ok

 				subject.SetStatus(originalStatus, "OK")
 				subject.End()
--- a/bridge/opentracing/bridge.go
+++ b/bridge/opentracing/bridge.go
@ -133,7 +133,7 @@ func (s *bridgeSpan) SetTag(key string, value interface{}) ot.Span {
 		// TODO: Should we ignore it?
 	case string(otext.Error):
 		if b, ok := value.(bool); ok && b {
-			s.otelSpan.SetStatus(codes.Unknown, "")
+			s.otelSpan.SetStatus(codes.Error, "")
 		}
 	default:
 		s.otelSpan.SetAttributes(otTagToOTelLabel(key, value))
@ -405,7 +405,7 @@ func (t *BridgeTracer) StartSpan(operationName string, opts ...ot.StartSpanOptio
 		})
 	}
 	if hadTrueErrorTag {
-		otelSpan.SetStatus(codes.Unknown, "")
+		otelSpan.SetStatus(codes.Error, "")
 	}
 	// One does not simply pass a concrete pointer to function
 	// that takes some interface. In case of passing nil concrete
--- a/bridge/opentracing/internal/mock.go
+++ b/bridge/opentracing/internal/mock.go
@ -263,7 +263,7 @@ func (s *MockSpan) RecordError(ctx context.Context, err error, opts ...oteltrace
 		cfg.Timestamp = time.Now()
 	}

-	if cfg.StatusCode != codes.OK {
+	if cfg.StatusCode != codes.Ok {
 		s.SetStatus(cfg.StatusCode, "")
 	}

--- a/codes/codes.go
+++ b/codes/codes.go
@ -16,74 +16,84 @@
 //
 // It conforms to [the OpenTelemetry
 // specification](https://github.com/open-telemetry/opentelemetry-specification/blob/master/specification/trace/api.md#statuscanonicalcode).
-// This also means that it follows gRPC codes and is based on
-// [google.golang.org/grpc/codes](https://godoc.org/google.golang.org/grpc/codes).
-//
-// This package was added to this project, instead of using that existing
-// package, to avoid the large package size it includes and not impose that
-// burden on projects using this package.
 package codes // import "go.opentelemetry.io/otel/codes"

+import (
+	"fmt"
+	"strconv"
+)
+
+const (
+	// Unset is the default status code.
+	Unset Code = 0
+	// Error indicates the operation contains an error.
+	Error Code = 1
+	// Ok indicates operation has been validated by an Application developers
+	// or Operator to have completed successfully, or contain no error.
+	Ok Code = 2
+
+	maxCode = 3
+)
+
 // Code is an 32-bit representation of a status state.
 type Code uint32

-// WARNING: any changes here must be propagated to the
-// otel/sdk/internal/codes.go file.
-const (
-	// OK means success.
-	OK Code = 0
-	// Canceled indicates the operation was canceled (typically by the
-	// caller).
-	Canceled Code = 1
-	// Unknown error. An example of where this error may be returned is if an
-	// error is raised by a dependant API that does not contain enough
-	// information to convert it into a more appropriate error.
-	Unknown Code = 2
-	// InvalidArgument indicates a client specified an invalid argument. Note
-	// that this differs from FailedPrecondition. InvalidArgument indicates
-	// arguments that are problematic regardless of the state of the system.
-	InvalidArgument Code = 3
-	// DeadlineExceeded means a deadline expired before the operation could
-	// complete. For operations that change the state of the system, this error
-	// may be returned even if the operation has completed successfully.
-	DeadlineExceeded Code = 4
-	// NotFound means some requested entity (e.g., file or directory) was not
-	// found.
-	NotFound Code = 5
-	// AlreadyExists means some entity that we attempted to create (e.g., file
-	// or directory) already exists.
-	AlreadyExists Code = 6
-	// PermissionDenied means the caller does not have permission to execute
-	// the specified operation. PermissionDenied must not be used if the caller
-	// cannot be identified (use Unauthenticated instead for those errors).
-	PermissionDenied Code = 7
-	// ResourceExhausted means some resource has been exhausted, perhaps a
-	// per-user quota, or perhaps the entire file system is out of space.
-	ResourceExhausted Code = 8
-	// FailedPrecondition means the operation was rejected because the system
-	// is not in a state required for the operation's execution.
-	FailedPrecondition Code = 9
-	// Aborted means the operation was aborted, typically due to a concurrency
-	// issue like sequencer check failures, transaction aborts, etc.
-	Aborted Code = 10
-	// OutOfRange means the operation was attempted past the valid range.
-	// E.g., seeking or reading past end of file. Unlike InvalidArgument, this
-	// error indicates a problem that may be fixed if the system state
-	// changes.
-	OutOfRange Code = 11
-	// Unimplemented means the operation is not implemented or not
-	// supported/enabled in this service.
-	Unimplemented Code = 12
-	// Internal means an internal errors. It means some invariants expected by
-	// underlying system has been broken.
-	Internal Code = 13
-	// Unavailable means the service is currently unavailable. This is most
-	// likely a transient condition and may be corrected by retrying with a
-	// backoff.
-	Unavailable Code = 14
-	// DataLoss means unrecoverable data loss or corruption has occurred.
-	DataLoss Code = 15
-	// Unauthenticated means the request does not have valid authentication
-	// credentials for the operation.
-	Unauthenticated Code = 16
-)
+var codeToStr = map[Code]string{
+	Unset: "Unset",
+	Error: "Error",
+	Ok:    "Ok",
+}
+
+var strToCode = map[string]Code{
+	"Unset": Unset,
+	"Error": Error,
+	"Ok":    Ok,
+}
+
+// String returns the Code as a string.
+func (c Code) String() string {
+	return codeToStr[c]
+}
+
+// UnmarshalJSON unmarshals b into the Code.
+//
+// This is based on the functionality in the gRPC codes package:
+// https://github.com/grpc/grpc-go/blob/bb64fee312b46ebee26be43364a7a966033521b1/codes/codes.go#L218-L244
+func (c *Code) UnmarshalJSON(b []byte) error {
+	// From json.Unmarshaler: By convention, to approximate the behavior of
+	// Unmarshal itself, Unmarshalers implement UnmarshalJSON([]byte("null")) as
+	// a no-op.
+	if string(b) == "null" {
+		return nil
+	}
+	if c == nil {
+		return fmt.Errorf("nil receiver passed to UnmarshalJSON")
+	}
+
+	if ci, err := strconv.ParseUint(string(b), 10, 32); err == nil {
+		if ci >= maxCode {
+			return fmt.Errorf("invalid code: %q", ci)
+		}
+
+		*c = Code(ci)
+		return nil
+	}
+
+	if jc, ok := strToCode[string(b)]; ok {
+		*c = jc
+		return nil
+	}
+	return fmt.Errorf("invalid code: %q", string(b))
+}
+
+// MarshalJSON returns c as the JSON encoding of c.
+func (c *Code) MarshalJSON() ([]byte, error) {
+	if c == nil {
+		return []byte("null"), nil
+	}
+	str, ok := codeToStr[*c]
+	if !ok {
+		return nil, fmt.Errorf("invalid code: %d", *c)
+	}
+	return []byte(fmt.Sprintf("%q", str)), nil
+}
--- a/codes/codes_test.go
+++ b/codes/codes_test.go
@ -0,0 +1,135 @@
+// Copyright The OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package codes
+
+import (
+	"bytes"
+	"fmt"
+	"testing"
+)
+
+func TestCodeString(t *testing.T) {
+	tests := []struct {
+		code Code
+		want string
+	}{
+		{Unset, "Unset"},
+		{Error, "Error"},
+		{Ok, "Ok"},
+	}
+
+	for _, test := range tests {
+		if got := test.code.String(); got != test.want {
+			t.Errorf("String of code %d %q, want %q", test.code, got, test.want)
+		}
+	}
+}
+
+func TestCodeUnmarshalJSONNull(t *testing.T) {
+	c := new(Code)
+	orig := c
+	if err := c.UnmarshalJSON([]byte("null")); err != nil {
+		t.Fatalf("Code.UnmarshalJSON(\"null\") errored: %v", err)
+	}
+	if orig != c {
+		t.Error("Code.UnmarshalJSON(\"null\") should not decode a value")
+	}
+}
+
+func TestCodeUnmarshalJSONNil(t *testing.T) {
+	c := (*Code)(nil)
+	if err := c.UnmarshalJSON([]byte{}); err == nil {
+		t.Fatalf("Code(nil).UnmarshalJSON() did not error")
+	}
+}
+
+func TestCodeUnmarshalJSON(t *testing.T) {
+	tests := []struct {
+		input string
+		want  Code
+	}{
+		{"0", Unset},
+		{"Unset", Unset},
+		{"1", Error},
+		{"Error", Error},
+		{"2", Ok},
+		{"Ok", Ok},
+	}
+	for _, test := range tests {
+		c := new(Code)
+		*c = Code(maxCode)
+		if err := c.UnmarshalJSON([]byte(test.input)); err != nil {
+			t.Fatalf("Code.UnmarshalJSON(%q) errored: %v", test.input, err)
+		}
+		if *c != test.want {
+			t.Errorf("failed to unmarshal %q as %v", test.input, test.want)
+		}
+	}
+}
+
+func TestCodeUnmarshalJSONErrorInvalidData(t *testing.T) {
+	tests := []string{
+		fmt.Sprintf("%d", maxCode),
+		"Not a code",
+	}
+	c := new(Code)
+	for _, test := range tests {
+		if err := c.UnmarshalJSON([]byte(test)); err == nil {
+			t.Fatalf("Code.UnmarshalJSON(%q) did not error", test)
+		}
+	}
+}
+
+func TestCodeMarshalJSONNil(t *testing.T) {
+	c := (*Code)(nil)
+	b, err := c.MarshalJSON()
+	if err != nil {
+		t.Fatalf("Code(nil).MarshalJSON() errored: %v", err)
+	}
+	if !bytes.Equal(b, []byte("null")) {
+		t.Errorf("Code(nil).MarshalJSON() returned %s, want \"null\"", string(b))
+	}
+}
+
+func TestCodeMarshalJSON(t *testing.T) {
+	tests := []struct {
+		code Code
+		want string
+	}{
+		{Unset, `"Unset"`},
+		{Error, `"Error"`},
+		{Ok, `"Ok"`},
+	}
+
+	for _, test := range tests {
+		b, err := test.code.MarshalJSON()
+		if err != nil {
+			t.Fatalf("Code(%s).MarshalJSON() errored: %v", test.code, err)
+		}
+		if !bytes.Equal(b, []byte(test.want)) {
+			t.Errorf("Code(%s).MarshalJSON() returned %s, want %s", test.code, string(b), test.want)
+		}
+	}
+}
+
+func TestCodeMarshalJSONErrorInvalid(t *testing.T) {
+	c := new(Code)
+	*c = Code(maxCode)
+	if b, err := c.MarshalJSON(); err == nil {
+		t.Fatalf("Code(maxCode).MarshalJSON() did not error")
+	} else if b != nil {
+		t.Fatal("Code(maxCode).MarshalJSON() returned non-nil value")
+	}
+}
--- a/example/basic/go.sum
+++ b/example/basic/go.sum
@ -1,70 +1,21 @@
-cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/DataDog/sketches-go v0.0.1 h1:RtG+76WKgZuz6FIaGsjoPePmadDBkuD/KC6+ZWu78b8=
 github.com/DataDog/sketches-go v0.0.1/go.mod h1:Q5DbzQ+3AkgGwymQO7aZFNP7ns2lZKGtvRBzRXfdi60=
 github.com/benbjohnson/clock v1.0.3 h1:vkLuvpK4fmtSCuo60+yC63p7y0BmQ8gm5ZXGuBCJyXg=
 github.com/benbjohnson/clock v1.0.3/go.mod h1:bGMdMPoPVvcYyt1gHDf4J2KE153Yf9BuiUKYMaxlTDM=
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 github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
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 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.6.1 h1:hDPOHmpOpP40lSULcqw7IrRb/u7w6RpDC9399XyoNd0=
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
-golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
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-golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
-golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
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-google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
-google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
-google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55 h1:gSJIx1SDwno+2ElGhA4+qG2zF97qiUzTM+rQ0klBOcE=
-google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
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-google.golang.org/grpc v1.32.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
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--- a/example/jaeger/go.sum
+++ b/example/jaeger/go.sum
@ -360,8 +360,6 @@ google.golang.org/grpc v1.31.0 h1:T7P4R73V3SSDPhH7WW7ATbfViLtmamH0DKrP3f9AuDI=
 google.golang.org/grpc v1.31.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
 google.golang.org/grpc v1.31.1 h1:SfXqXS5hkufcdZ/mHtYCh53P2b+92WQq/DZcKLgsFRs=
 google.golang.org/grpc v1.31.1/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
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 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
--- a/example/namedtracer/go.sum
+++ b/example/namedtracer/go.sum
@ -1,70 +1,21 @@
-cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
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 github.com/DataDog/sketches-go v0.0.1 h1:RtG+76WKgZuz6FIaGsjoPePmadDBkuD/KC6+ZWu78b8=
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 github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
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 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
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 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
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--- a/example/prometheus/go.sum
+++ b/example/prometheus/go.sum
@ -1,5 +1,3 @@
-cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
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 github.com/DataDog/sketches-go v0.0.1 h1:RtG+76WKgZuz6FIaGsjoPePmadDBkuD/KC6+ZWu78b8=
 github.com/DataDog/sketches-go v0.0.1/go.mod h1:Q5DbzQ+3AkgGwymQO7aZFNP7ns2lZKGtvRBzRXfdi60=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
@ -12,29 +10,20 @@ github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
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 github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=
 github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
-github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
-github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
-github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
-github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
 github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
 github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
-github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
-github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/golang/protobuf v1.3.3/go.mod h1:vzj43D7+SQXF/4pzW/hwtAqwc6iTitCiVSaWz5lYuqw=
 github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
 github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA=
 github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs=
@ -42,7 +31,6 @@ github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:W
 github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
 github.com/golang/protobuf v1.4.2 h1:+Z5KGCizgyZCbGh1KZqA0fcLLkwbsjIzS4aV2v7wJX0=
 github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
-github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
 github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
@ -78,7 +66,6 @@ github.com/prometheus/client_golang v1.7.1 h1:NTGy1Ja9pByO+xAeH/qiWnLrKtr3hJPNja
 github.com/prometheus/client_golang v1.7.1/go.mod h1:PY5Wy2awLA44sXw4AOSfFBetzPP4j5+D6mVACh+pe2M=
 github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
 github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
-github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/prometheus/client_model v0.2.0 h1:uq5h0d+GuxiXLJLNABMgp2qUWDPiLvgCzz2dUR+/W/M=
 github.com/prometheus/client_model v0.2.0/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/prometheus/common v0.4.1/go.mod h1:TNfzLD0ON7rHzMJeJkieUDPYmFC7Snx/y86RQel1bk4=
@ -99,23 +86,11 @@ github.com/stretchr/testify v1.6.1 h1:hDPOHmpOpP40lSULcqw7IrRb/u7w6RpDC9399XyoNd
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
-golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
-golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
-golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
-golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
-golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@ -124,21 +99,8 @@ golang.org/x/sys v0.0.0-20200106162015-b016eb3dc98e/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20200615200032-f1bc736245b1 h1:ogLJMz+qpzav7lGMh10LMvAkM/fAoGlaiiHYiFYdm80=
 golang.org/x/sys v0.0.0-20200615200032-f1bc736245b1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
-golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
-golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
-google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
-google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
-google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55 h1:gSJIx1SDwno+2ElGhA4+qG2zF97qiUzTM+rQ0klBOcE=
-google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
-google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
-google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
-google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
-google.golang.org/grpc v1.32.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
@ -156,5 +118,3 @@ gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
 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 v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
--- a/example/zipkin/go.sum
+++ b/example/zipkin/go.sum
@ -95,8 +95,6 @@ google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyac
 google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
 google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
 google.golang.org/grpc v1.30.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
-google.golang.org/grpc v1.32.0 h1:zWTV+LMdc3kaiJMSTOFz2UgSBgx8RNQoTGiZu3fR9S0=
-google.golang.org/grpc v1.32.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
--- a/exporters/metric/prometheus/go.sum
+++ b/exporters/metric/prometheus/go.sum
@ -1,5 +1,3 @@
-cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/DataDog/sketches-go v0.0.1 h1:RtG+76WKgZuz6FIaGsjoPePmadDBkuD/KC6+ZWu78b8=
 github.com/DataDog/sketches-go v0.0.1/go.mod h1:Q5DbzQ+3AkgGwymQO7aZFNP7ns2lZKGtvRBzRXfdi60=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
@ -12,29 +10,20 @@ github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
-github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=
 github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
-github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
-github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
-github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
-github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
 github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
 github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
-github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
-github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/golang/protobuf v1.3.3/go.mod h1:vzj43D7+SQXF/4pzW/hwtAqwc6iTitCiVSaWz5lYuqw=
 github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
 github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA=
 github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs=
@ -42,7 +31,6 @@ github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:W
 github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
 github.com/golang/protobuf v1.4.2 h1:+Z5KGCizgyZCbGh1KZqA0fcLLkwbsjIzS4aV2v7wJX0=
 github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
-github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
 github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
@ -78,7 +66,6 @@ github.com/prometheus/client_golang v1.7.1 h1:NTGy1Ja9pByO+xAeH/qiWnLrKtr3hJPNja
 github.com/prometheus/client_golang v1.7.1/go.mod h1:PY5Wy2awLA44sXw4AOSfFBetzPP4j5+D6mVACh+pe2M=
 github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
 github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
-github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/prometheus/client_model v0.2.0 h1:uq5h0d+GuxiXLJLNABMgp2qUWDPiLvgCzz2dUR+/W/M=
 github.com/prometheus/client_model v0.2.0/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/prometheus/common v0.4.1/go.mod h1:TNfzLD0ON7rHzMJeJkieUDPYmFC7Snx/y86RQel1bk4=
@ -99,23 +86,11 @@ github.com/stretchr/testify v1.6.1 h1:hDPOHmpOpP40lSULcqw7IrRb/u7w6RpDC9399XyoNd
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
-golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
-golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
-golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
-golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
-golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@ -124,21 +99,8 @@ golang.org/x/sys v0.0.0-20200106162015-b016eb3dc98e/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20200615200032-f1bc736245b1 h1:ogLJMz+qpzav7lGMh10LMvAkM/fAoGlaiiHYiFYdm80=
 golang.org/x/sys v0.0.0-20200615200032-f1bc736245b1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
-golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
-golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
-google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
-google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
-google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55 h1:gSJIx1SDwno+2ElGhA4+qG2zF97qiUzTM+rQ0klBOcE=
-google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
-google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
-google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
-google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
-google.golang.org/grpc v1.32.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
@ -156,5 +118,3 @@ gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
 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 v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
--- a/exporters/otlp/internal/transform/span.go
+++ b/exporters/otlp/internal/transform/span.go
@ -15,8 +15,7 @@
 package transform

 import (
-	"google.golang.org/grpc/codes"
-
+	"go.opentelemetry.io/otel/codes"
 	tracepb "go.opentelemetry.io/otel/exporters/otlp/internal/opentelemetry-proto-gen/trace/v1"

 	apitrace "go.opentelemetry.io/otel/api/trace"
@ -127,8 +126,15 @@ func span(sd *export.SpanData) *tracepb.Span {

 // status transform a span code and message into an OTLP span status.
 func status(status codes.Code, message string) *tracepb.Status {
+	var c tracepb.Status_StatusCode
+	switch status {
+	case codes.Error:
+		c = tracepb.Status_UnknownError
+	default:
+		c = tracepb.Status_Ok
+	}
 	return &tracepb.Status{
-		Code:    tracepb.Status_StatusCode(status),
+		Code:    c,
 		Message: message,
 	}
 }
--- a/exporters/otlp/internal/transform/span_test.go
+++ b/exporters/otlp/internal/transform/span_test.go
@ -23,12 +23,12 @@ import (
 	"github.com/google/go-cmp/cmp"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
-	"google.golang.org/grpc/codes"

 	tracepb "go.opentelemetry.io/otel/exporters/otlp/internal/opentelemetry-proto-gen/trace/v1"
 	"go.opentelemetry.io/otel/label"

 	apitrace "go.opentelemetry.io/otel/api/trace"
+	"go.opentelemetry.io/otel/codes"
 	export "go.opentelemetry.io/otel/sdk/export/trace"
 	"go.opentelemetry.io/otel/sdk/instrumentation"
 	"go.opentelemetry.io/otel/sdk/resource"
@ -155,100 +155,28 @@ func TestLinks(t *testing.T) {

 func TestStatus(t *testing.T) {
 	for _, test := range []struct {
-		grpcCode   codes.Code
+		code       codes.Code
 		message    string
 		otlpStatus tracepb.Status_StatusCode
 	}{
 		{
-			codes.OK,
-			"test OK",
+			codes.Ok,
+			"test Ok",
 			tracepb.Status_Ok,
 		},
 		{
-			codes.Canceled,
-			//nolint
-			"test CANCELLED",
-			//nolint
-			tracepb.Status_Cancelled,
+			codes.Unset,
+			"test Unset",
+			tracepb.Status_Ok,
 		},
 		{
-			codes.Unknown,
-			"test UNKNOWN",
+			codes.Error,
+			"test Error",
 			tracepb.Status_UnknownError,
 		},
-		{
-			codes.InvalidArgument,
-			"test INVALID_ARGUMENT",
-			tracepb.Status_InvalidArgument,
-		},
-		{
-			codes.DeadlineExceeded,
-			"test DEADLINE_EXCEEDED",
-			tracepb.Status_DeadlineExceeded,
-		},
-		{
-			codes.NotFound,
-			"test NOT_FOUND",
-			tracepb.Status_NotFound,
-		},
-		{
-			codes.AlreadyExists,
-			"test ALREADY_EXISTS",
-			tracepb.Status_AlreadyExists,
-		},
-		{
-			codes.PermissionDenied,
-			"test PERMISSION_DENIED",
-			tracepb.Status_PermissionDenied,
-		},
-		{
-			codes.ResourceExhausted,
-			"test RESOURCE_EXHAUSTED",
-			tracepb.Status_ResourceExhausted,
-		},
-		{
-			codes.FailedPrecondition,
-			"test FAILED_PRECONDITION",
-			tracepb.Status_FailedPrecondition,
-		},
-		{
-			codes.Aborted,
-			"test ABORTED",
-			tracepb.Status_Aborted,
-		},
-		{
-			codes.OutOfRange,
-			"test OUT_OF_RANGE",
-			tracepb.Status_OutOfRange,
-		},
-		{
-			codes.Unimplemented,
-			"test UNIMPLEMENTED",
-			tracepb.Status_Unimplemented,
-		},
-		{
-			codes.Internal,
-			"test INTERNAL",
-			tracepb.Status_InternalError,
-		},
-		{
-			codes.Unavailable,
-			"test UNAVAILABLE",
-			tracepb.Status_Unavailable,
-		},
-		{
-			codes.DataLoss,
-			"test DATA_LOSS",
-			tracepb.Status_DataLoss,
-		},
-		{
-			codes.Unauthenticated,
-			"test UNAUTHENTICATED",
-			tracepb.Status_Unauthenticated,
-		},
 	} {
 		expected := &tracepb.Status{Code: test.otlpStatus, Message: test.message}
-		assert.Equal(t, expected, status(test.grpcCode, test.message))
+		assert.Equal(t, expected, status(test.code, test.message))
 	}

 }
@ -315,7 +243,7 @@ func TestSpanData(t *testing.T) {
 				},
 			},
 		},
-		StatusCode:      codes.Internal,
+		StatusCode:      codes.Error,
 		StatusMessage:   "utterly unrecognized",
 		HasRemoteParent: true,
 		Attributes: []label.KeyValue{
--- a/exporters/otlp/otlp_span_test.go
+++ b/exporters/otlp/otlp_span_test.go
@ -21,8 +21,8 @@ import (

 	"github.com/stretchr/testify/assert"
 	"google.golang.org/grpc"
-	"google.golang.org/grpc/codes"

+	"go.opentelemetry.io/otel/codes"
 	coltracepb "go.opentelemetry.io/otel/exporters/otlp/internal/opentelemetry-proto-gen/collector/trace/v1"
 	commonpb "go.opentelemetry.io/otel/exporters/otlp/internal/opentelemetry-proto-gen/common/v1"
 	resourcepb "go.opentelemetry.io/otel/exporters/otlp/internal/opentelemetry-proto-gen/resource/v1"
@ -95,7 +95,7 @@ func TestExportSpans(t *testing.T) {
 						label.String("user", "alice"),
 						label.Bool("authenticated", true),
 					},
-					StatusCode:    codes.OK,
+					StatusCode:    codes.Ok,
 					StatusMessage: "Ok",
 					Resource:      resource.New(label.String("instance", "tester-a")),
 					InstrumentationLibrary: instrumentation.Library{
@ -117,7 +117,7 @@ func TestExportSpans(t *testing.T) {
 						label.String("user", "alice"),
 						label.Bool("authenticated", true),
 					},
-					StatusCode:    codes.OK,
+					StatusCode:    codes.Ok,
 					StatusMessage: "Ok",
 					Resource:      resource.New(label.String("instance", "tester-a")),
 					InstrumentationLibrary: instrumentation.Library{
@ -140,7 +140,7 @@ func TestExportSpans(t *testing.T) {
 						label.String("user", "alice"),
 						label.Bool("authenticated", true),
 					},
-					StatusCode:    codes.OK,
+					StatusCode:    codes.Ok,
 					StatusMessage: "Ok",
 					Resource:      resource.New(label.String("instance", "tester-a")),
 					InstrumentationLibrary: instrumentation.Library{
@ -162,7 +162,7 @@ func TestExportSpans(t *testing.T) {
 						label.String("user", "bob"),
 						label.Bool("authenticated", false),
 					},
-					StatusCode:    codes.Unauthenticated,
+					StatusCode:    codes.Error,
 					StatusMessage: "Unauthenticated",
 					Resource:      resource.New(label.String("instance", "tester-b")),
 					InstrumentationLibrary: instrumentation.Library{
@ -341,7 +341,7 @@ func TestExportSpans(t *testing.T) {
 										},
 									},
 									Status: &tracepb.Status{
-										Code:    tracepb.Status_Unauthenticated,
+										Code:    tracepb.Status_UnknownError,
 										Message: "Unauthenticated",
 									},
 								},
--- a/exporters/stdout/go.mod
+++ b/exporters/stdout/go.mod
@ -11,5 +11,4 @@ require (
 	github.com/stretchr/testify v1.6.1
 	go.opentelemetry.io/otel v0.12.0
 	go.opentelemetry.io/otel/sdk v0.12.0
-	google.golang.org/grpc v1.32.0
 )
--- a/exporters/stdout/go.sum
+++ b/exporters/stdout/go.sum
@ -1,73 +1,21 @@
-cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/DataDog/sketches-go v0.0.1 h1:RtG+76WKgZuz6FIaGsjoPePmadDBkuD/KC6+ZWu78b8=
 github.com/DataDog/sketches-go v0.0.1/go.mod h1:Q5DbzQ+3AkgGwymQO7aZFNP7ns2lZKGtvRBzRXfdi60=
 github.com/benbjohnson/clock v1.0.3 h1:vkLuvpK4fmtSCuo60+yC63p7y0BmQ8gm5ZXGuBCJyXg=
 github.com/benbjohnson/clock v1.0.3/go.mod h1:bGMdMPoPVvcYyt1gHDf4J2KE153Yf9BuiUKYMaxlTDM=
-github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
-github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
-github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
-github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
-github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
-github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
-github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
-github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/golang/protobuf v1.3.3 h1:gyjaxf+svBWX08ZjK86iN9geUJF0H6gp2IRKX6Nf6/I=
-github.com/golang/protobuf v1.3.3/go.mod h1:vzj43D7+SQXF/4pzW/hwtAqwc6iTitCiVSaWz5lYuqw=
-github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
-github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.2 h1:X2ev0eStA3AbceY54o37/0PQ/UWqKEiiO2dKL5OPaFM=
 github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/gofuzz v1.1.0 h1:Hsa8mG0dQ46ij8Sl2AYJDUv1oA9/d6Vk+3LG99Oe02g=
 github.com/google/gofuzz v1.1.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.6.1 h1:hDPOHmpOpP40lSULcqw7IrRb/u7w6RpDC9399XyoNd0=
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
-golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
-golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
-golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
-golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20190311183353-d8887717615a h1:oWX7TPOiFAMXLq8o0ikBYfCJVlRHBcsciT5bXOrH628=
-golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
-golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
-golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a h1:1BGLXjeY4akVXGgbC9HugT3Jv3hCI0z56oJR5vAMgBU=
-golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
-golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
-golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
-golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
-google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
-google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
-google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55 h1:gSJIx1SDwno+2ElGhA4+qG2zF97qiUzTM+rQ0klBOcE=
-google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
-google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
-google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
-google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
-google.golang.org/grpc v1.32.0 h1:zWTV+LMdc3kaiJMSTOFz2UgSBgx8RNQoTGiZu3fR9S0=
-google.golang.org/grpc v1.32.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
 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 v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
--- a/exporters/stdout/trace_test.go
+++ b/exporters/stdout/trace_test.go
@ -22,9 +22,8 @@ import (
 	"testing"
 	"time"

-	"google.golang.org/grpc/codes"
-
 	"go.opentelemetry.io/otel/api/trace"
+	"go.opentelemetry.io/otel/codes"
 	"go.opentelemetry.io/otel/exporters/stdout"
 	"go.opentelemetry.io/otel/label"
 	export "go.opentelemetry.io/otel/sdk/export/trace"
@ -64,7 +63,7 @@ func TestExporter_ExportSpan(t *testing.T) {
 			{Name: "bar", Attributes: []label.KeyValue{label.Float64("double", doubleValue)}, Time: now},
 		},
 		SpanKind:      trace.SpanKindInternal,
-		StatusCode:    codes.Unknown,
+		StatusCode:    codes.Error,
 		StatusMessage: "interesting",
 		Resource:      resource,
 	}
@ -115,7 +114,7 @@ func TestExporter_ExportSpan(t *testing.T) {
 		`}` +
 		`],` +
 		`"Links":null,` +
-		`"StatusCode":2,` +
+		`"StatusCode":"Error",` +
 		`"StatusMessage":"interesting",` +
 		`"HasRemoteParent":false,` +
 		`"DroppedAttributeCount":0,` +
--- a/exporters/trace/jaeger/go.mod
+++ b/exporters/trace/jaeger/go.mod
@ -14,5 +14,4 @@ require (
 	go.opentelemetry.io/otel v0.12.0
 	go.opentelemetry.io/otel/sdk v0.12.0
 	google.golang.org/api v0.32.0
-	google.golang.org/grpc v1.32.0
 )
--- a/exporters/trace/jaeger/go.sum
+++ b/exporters/trace/jaeger/go.sum
@ -367,8 +367,6 @@ google.golang.org/grpc v1.31.0 h1:T7P4R73V3SSDPhH7WW7ATbfViLtmamH0DKrP3f9AuDI=
 google.golang.org/grpc v1.31.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
 google.golang.org/grpc v1.31.1 h1:SfXqXS5hkufcdZ/mHtYCh53P2b+92WQq/DZcKLgsFRs=
 google.golang.org/grpc v1.31.1/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
-google.golang.org/grpc v1.32.0 h1:zWTV+LMdc3kaiJMSTOFz2UgSBgx8RNQoTGiZu3fR9S0=
-google.golang.org/grpc v1.32.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
--- a/exporters/trace/jaeger/jaeger.go
+++ b/exporters/trace/jaeger/jaeger.go
@ -21,10 +21,10 @@ import (
 	"sync"

 	"google.golang.org/api/support/bundler"
-	"google.golang.org/grpc/codes"

 	"go.opentelemetry.io/otel/api/global"
 	apitrace "go.opentelemetry.io/otel/api/trace"
+	"go.opentelemetry.io/otel/codes"
 	gen "go.opentelemetry.io/otel/exporters/trace/jaeger/internal/gen-go/jaeger"
 	"go.opentelemetry.io/otel/label"
 	export "go.opentelemetry.io/otel/sdk/export/trace"
@ -294,7 +294,7 @@ func spanDataToThrift(data *export.SpanData) *gen.Span {

 	// Ensure that if Status.Code is not OK, that we set the "error" tag on the Jaeger span.
 	// See Issue https://github.com/census-instrumentation/opencensus-go/issues/1041
-	if data.StatusCode != codes.OK {
+	if data.StatusCode != codes.Ok && data.StatusCode != codes.Unset {
 		tags = append(tags, getBoolTag("error", true))
 	}

--- a/exporters/trace/jaeger/jaeger_test.go
+++ b/exporters/trace/jaeger/jaeger_test.go
@ -27,11 +27,11 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	"google.golang.org/api/support/bundler"
-	"google.golang.org/grpc/codes"

 	"go.opentelemetry.io/otel/api/global"
 	"go.opentelemetry.io/otel/api/trace"
 	apitrace "go.opentelemetry.io/otel/api/trace"
+	"go.opentelemetry.io/otel/codes"
 	gen "go.opentelemetry.io/otel/exporters/trace/jaeger/internal/gen-go/jaeger"
 	ottest "go.opentelemetry.io/otel/internal/testing"
 	"go.opentelemetry.io/otel/label"
@ -364,7 +364,7 @@ func Test_spanDataToThrift(t *testing.T) {

 	eventNameValue := "event-test"
 	keyValue := "value"
-	statusCodeValue := int64(2)
+	statusCodeValue := int64(1)
 	doubleValue := 123.456
 	uintValue := int64(123)
 	boolTrue := true
@ -407,7 +407,7 @@ func Test_spanDataToThrift(t *testing.T) {
 				MessageEvents: []export.Event{
 					{Name: eventNameValue, Attributes: []label.KeyValue{label.String("k1", keyValue)}, Time: now},
 				},
-				StatusCode:    codes.Unknown,
+				StatusCode:    codes.Error,
 				StatusMessage: statusMessage,
 				SpanKind:      apitrace.SpanKindClient,
 				Resource:      resource.New(label.String("rk1", rv1), label.Int64("rk2", rv2)),
--- a/exporters/trace/zipkin/go.mod
+++ b/exporters/trace/zipkin/go.mod
@ -13,5 +13,4 @@ require (
 	github.com/stretchr/testify v1.6.1
 	go.opentelemetry.io/otel v0.12.0
 	go.opentelemetry.io/otel/sdk v0.12.0
-	google.golang.org/grpc v1.32.0
 )
--- a/exporters/trace/zipkin/go.sum
+++ b/exporters/trace/zipkin/go.sum
@ -98,8 +98,6 @@ google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyac
 google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
 google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
 google.golang.org/grpc v1.30.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
-google.golang.org/grpc v1.32.0 h1:zWTV+LMdc3kaiJMSTOFz2UgSBgx8RNQoTGiZu3fR9S0=
-google.golang.org/grpc v1.32.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
--- a/exporters/trace/zipkin/model_test.go
+++ b/exporters/trace/zipkin/model_test.go
@ -23,9 +23,9 @@ import (
 	"github.com/google/go-cmp/cmp"
 	zkmodel "github.com/openzipkin/zipkin-go/model"
 	"github.com/stretchr/testify/require"
-	"google.golang.org/grpc/codes"

 	"go.opentelemetry.io/otel/api/trace"
+	"go.opentelemetry.io/otel/codes"
 	"go.opentelemetry.io/otel/label"
 	export "go.opentelemetry.io/otel/sdk/export/trace"
 	"go.opentelemetry.io/otel/sdk/instrumentation"
@ -62,7 +62,7 @@ func TestModelConversion(t *testing.T) {
 					Attributes: nil,
 				},
 			},
-			StatusCode:    codes.NotFound,
+			StatusCode:    codes.Error,
 			StatusMessage: "404, file not found",
 		},
 		// span data with no parent (same as typical, but has
@ -95,7 +95,7 @@ func TestModelConversion(t *testing.T) {
 					Attributes: nil,
 				},
 			},
-			StatusCode:    codes.NotFound,
+			StatusCode:    codes.Error,
 			StatusMessage: "404, file not found",
 		},
 		// span data of unspecified kind
@ -127,7 +127,7 @@ func TestModelConversion(t *testing.T) {
 					Attributes: nil,
 				},
 			},
-			StatusCode:    codes.NotFound,
+			StatusCode:    codes.Error,
 			StatusMessage: "404, file not found",
 		},
 		// span data of internal kind
@ -159,7 +159,7 @@ func TestModelConversion(t *testing.T) {
 					Attributes: nil,
 				},
 			},
-			StatusCode:    codes.NotFound,
+			StatusCode:    codes.Error,
 			StatusMessage: "404, file not found",
 		},
 		// span data of client kind
@ -191,7 +191,7 @@ func TestModelConversion(t *testing.T) {
 					Attributes: nil,
 				},
 			},
-			StatusCode:    codes.NotFound,
+			StatusCode:    codes.Error,
 			StatusMessage: "404, file not found",
 		},
 		// span data of producer kind
@ -223,7 +223,7 @@ func TestModelConversion(t *testing.T) {
 					Attributes: nil,
 				},
 			},
-			StatusCode:    codes.NotFound,
+			StatusCode:    codes.Error,
 			StatusMessage: "404, file not found",
 		},
 		// span data of consumer kind
@ -255,7 +255,7 @@ func TestModelConversion(t *testing.T) {
 					Attributes: nil,
 				},
 			},
-			StatusCode:    codes.NotFound,
+			StatusCode:    codes.Error,
 			StatusMessage: "404, file not found",
 		},
 		// span data with no events
@ -274,7 +274,7 @@ func TestModelConversion(t *testing.T) {
 				label.String("attr2", "bar"),
 			},
 			MessageEvents: nil,
-			StatusCode:    codes.NotFound,
+			StatusCode:    codes.Error,
 			StatusMessage: "404, file not found",
 		},
 		// span data with an "error" attribute set to "false"
@ -305,7 +305,7 @@ func TestModelConversion(t *testing.T) {
 					Attributes: nil,
 				},
 			},
-			StatusCode:    codes.NotFound,
+			StatusCode:    codes.Error,
 			StatusMessage: "404, file not found",
 		},
 	}
@ -346,7 +346,7 @@ func TestModelConversion(t *testing.T) {
 			Tags: map[string]string{
 				"attr1":                   "42",
 				"attr2":                   "bar",
-				"otel.status_code":        "NotFound",
+				"otel.status_code":        "Error",
 				"otel.status_description": "404, file not found",
 			},
 		},
@ -385,7 +385,7 @@ func TestModelConversion(t *testing.T) {
 			Tags: map[string]string{
 				"attr1":                   "42",
 				"attr2":                   "bar",
-				"otel.status_code":        "NotFound",
+				"otel.status_code":        "Error",
 				"otel.status_description": "404, file not found",
 			},
 		},
@ -424,7 +424,7 @@ func TestModelConversion(t *testing.T) {
 			Tags: map[string]string{
 				"attr1":                   "42",
 				"attr2":                   "bar",
-				"otel.status_code":        "NotFound",
+				"otel.status_code":        "Error",
 				"otel.status_description": "404, file not found",
 			},
 		},
@ -463,7 +463,7 @@ func TestModelConversion(t *testing.T) {
 			Tags: map[string]string{
 				"attr1":                   "42",
 				"attr2":                   "bar",
-				"otel.status_code":        "NotFound",
+				"otel.status_code":        "Error",
 				"otel.status_description": "404, file not found",
 			},
 		},
@ -502,7 +502,7 @@ func TestModelConversion(t *testing.T) {
 			Tags: map[string]string{
 				"attr1":                   "42",
 				"attr2":                   "bar",
-				"otel.status_code":        "NotFound",
+				"otel.status_code":        "Error",
 				"otel.status_description": "404, file not found",
 			},
 		},
@ -541,7 +541,7 @@ func TestModelConversion(t *testing.T) {
 			Tags: map[string]string{
 				"attr1":                   "42",
 				"attr2":                   "bar",
-				"otel.status_code":        "NotFound",
+				"otel.status_code":        "Error",
 				"otel.status_description": "404, file not found",
 			},
 		},
@ -580,7 +580,7 @@ func TestModelConversion(t *testing.T) {
 			Tags: map[string]string{
 				"attr1":                   "42",
 				"attr2":                   "bar",
-				"otel.status_code":        "NotFound",
+				"otel.status_code":        "Error",
 				"otel.status_description": "404, file not found",
 			},
 		},
@ -610,7 +610,7 @@ func TestModelConversion(t *testing.T) {
 			Tags: map[string]string{
 				"attr1":                   "42",
 				"attr2":                   "bar",
-				"otel.status_code":        "NotFound",
+				"otel.status_code":        "Error",
 				"otel.status_description": "404, file not found",
 			},
 		},
@ -647,7 +647,7 @@ func TestModelConversion(t *testing.T) {
 				},
 			},
 			Tags: map[string]string{
-				"otel.status_code":        "NotFound",
+				"otel.status_code":        "Error",
 				"otel.status_description": "404, file not found",
 			},
 		},
@ -689,7 +689,7 @@ func Test_toZipkinTags(t *testing.T) {
 				"key":                     keyValue,
 				"ok":                      "true",
 				"uint":                    strconv.FormatInt(uintValue, 10),
-				"otel.status_code":        codes.OK.String(),
+				"otel.status_code":        codes.Unset.String(),
 				"otel.status_description": "",
 			},
 		},
@ -697,7 +697,7 @@ func Test_toZipkinTags(t *testing.T) {
 			name: "no attributes",
 			data: &export.SpanData{},
 			want: map[string]string{
-				"otel.status_code":        codes.OK.String(),
+				"otel.status_code":        codes.Unset.String(),
 				"otel.status_description": "",
 			},
 		},
@ -709,7 +709,7 @@ func Test_toZipkinTags(t *testing.T) {
 				},
 			},
 			want: map[string]string{
-				"otel.status_code":        codes.OK.String(),
+				"otel.status_code":        codes.Unset.String(),
 				"otel.status_description": "",
 			},
 		},
@ -720,13 +720,13 @@ func Test_toZipkinTags(t *testing.T) {
 					label.String("key", keyValue),
 					label.Bool("error", true),
 				},
-				StatusCode:    codes.Unknown,
+				StatusCode:    codes.Error,
 				StatusMessage: statusMessage,
 			},
 			want: map[string]string{
 				"error":                   "true",
 				"key":                     keyValue,
-				"otel.status_code":        codes.Unknown.String(),
+				"otel.status_code":        codes.Error.String(),
 				"otel.status_description": statusMessage,
 			},
 		},
@ -736,7 +736,7 @@ func Test_toZipkinTags(t *testing.T) {
 				InstrumentationLibrary: instrumentation.Library{},
 			},
 			want: map[string]string{
-				"otel.status_code":        codes.OK.String(),
+				"otel.status_code":        codes.Unset.String(),
 				"otel.status_description": "",
 			},
 		},
@ -750,7 +750,7 @@ func Test_toZipkinTags(t *testing.T) {
 			},
 			want: map[string]string{
 				"otel.instrumentation_library.name": instrLibName,
-				"otel.status_code":                  codes.OK.String(),
+				"otel.status_code":                  codes.Unset.String(),
 				"otel.status_description":           "",
 			},
 		},
@ -766,7 +766,7 @@ func Test_toZipkinTags(t *testing.T) {
 			want: map[string]string{
 				"otel.instrumentation_library.name":    instrLibName,
 				"otel.instrumentation_library.version": instrLibVersion,
-				"otel.status_code":                     codes.OK.String(),
+				"otel.status_code":                     codes.Unset.String(),
 				"otel.status_description":              "",
 			},
 		},
--- a/exporters/trace/zipkin/zipkin_test.go
+++ b/exporters/trace/zipkin/zipkin_test.go
@ -29,10 +29,10 @@ import (
 	zkmodel "github.com/openzipkin/zipkin-go/model"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
-	"google.golang.org/grpc/codes"

 	"go.opentelemetry.io/otel/api/global"
 	"go.opentelemetry.io/otel/api/trace"
+	"go.opentelemetry.io/otel/codes"
 	export "go.opentelemetry.io/otel/sdk/export/trace"
 	sdktrace "go.opentelemetry.io/otel/sdk/trace"
 )
@ -252,7 +252,7 @@ func TestExportSpans(t *testing.T) {
 			EndTime:       time.Date(2020, time.March, 11, 19, 25, 0, 0, time.UTC),
 			Attributes:    nil,
 			MessageEvents: nil,
-			StatusCode:    codes.NotFound,
+			StatusCode:    codes.Error,
 			StatusMessage: "404, file not found",
 		},
 		// child
@ -268,7 +268,7 @@ func TestExportSpans(t *testing.T) {
 			EndTime:       time.Date(2020, time.March, 11, 19, 24, 45, 0, time.UTC),
 			Attributes:    nil,
 			MessageEvents: nil,
-			StatusCode:    codes.PermissionDenied,
+			StatusCode:    codes.Error,
 			StatusMessage: "403, forbidden",
 		},
 	}
@ -297,7 +297,7 @@ func TestExportSpans(t *testing.T) {
 			RemoteEndpoint: nil,
 			Annotations:    nil,
 			Tags: map[string]string{
-				"otel.status_code":        "NotFound",
+				"otel.status_code":        "Error",
 				"otel.status_description": "404, file not found",
 			},
 		},
@ -325,7 +325,7 @@ func TestExportSpans(t *testing.T) {
 			RemoteEndpoint: nil,
 			Annotations:    nil,
 			Tags: map[string]string{
-				"otel.status_code":        "PermissionDenied",
+				"otel.status_code":        "Error",
 				"otel.status_description": "403, forbidden",
 			},
 		},
--- a/sdk/export/trace/trace.go
+++ b/sdk/export/trace/trace.go
@ -18,9 +18,8 @@ import (
 	"context"
 	"time"

-	"google.golang.org/grpc/codes"
-
 	apitrace "go.opentelemetry.io/otel/api/trace"
+	"go.opentelemetry.io/otel/codes"
 	"go.opentelemetry.io/otel/label"
 	"go.opentelemetry.io/otel/sdk/instrumentation"
 	"go.opentelemetry.io/otel/sdk/resource"
--- a/sdk/go.mod
+++ b/sdk/go.mod
@ -11,5 +11,4 @@ require (
 	github.com/google/gofuzz v1.1.0 // indirect
 	github.com/stretchr/testify v1.6.1
 	go.opentelemetry.io/otel v0.12.0
-	google.golang.org/grpc v1.32.0
 )
--- a/sdk/go.sum
+++ b/sdk/go.sum
@ -1,73 +1,21 @@
-cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/DataDog/sketches-go v0.0.1 h1:RtG+76WKgZuz6FIaGsjoPePmadDBkuD/KC6+ZWu78b8=
 github.com/DataDog/sketches-go v0.0.1/go.mod h1:Q5DbzQ+3AkgGwymQO7aZFNP7ns2lZKGtvRBzRXfdi60=
 github.com/benbjohnson/clock v1.0.3 h1:vkLuvpK4fmtSCuo60+yC63p7y0BmQ8gm5ZXGuBCJyXg=
 github.com/benbjohnson/clock v1.0.3/go.mod h1:bGMdMPoPVvcYyt1gHDf4J2KE153Yf9BuiUKYMaxlTDM=
-github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
-github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
-github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
-github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
-github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
-github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
-github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
-github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/golang/protobuf v1.3.3 h1:gyjaxf+svBWX08ZjK86iN9geUJF0H6gp2IRKX6Nf6/I=
-github.com/golang/protobuf v1.3.3/go.mod h1:vzj43D7+SQXF/4pzW/hwtAqwc6iTitCiVSaWz5lYuqw=
-github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
-github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.2 h1:X2ev0eStA3AbceY54o37/0PQ/UWqKEiiO2dKL5OPaFM=
 github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/gofuzz v1.1.0 h1:Hsa8mG0dQ46ij8Sl2AYJDUv1oA9/d6Vk+3LG99Oe02g=
 github.com/google/gofuzz v1.1.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.6.1 h1:hDPOHmpOpP40lSULcqw7IrRb/u7w6RpDC9399XyoNd0=
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
-golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
-golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
-golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
-golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20190311183353-d8887717615a h1:oWX7TPOiFAMXLq8o0ikBYfCJVlRHBcsciT5bXOrH628=
-golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
-golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
-golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a h1:1BGLXjeY4akVXGgbC9HugT3Jv3hCI0z56oJR5vAMgBU=
-golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
-golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
-golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
-golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
-google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
-google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
-google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55 h1:gSJIx1SDwno+2ElGhA4+qG2zF97qiUzTM+rQ0klBOcE=
-google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
-google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
-google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
-google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
-google.golang.org/grpc v1.32.0 h1:zWTV+LMdc3kaiJMSTOFz2UgSBgx8RNQoTGiZu3fR9S0=
-google.golang.org/grpc v1.32.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
 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 v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
--- a/sdk/internal/codes.go
+++ b/sdk/internal/codes.go
@ -1,49 +0,0 @@
-// Copyright The OpenTelemetry Authors
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package internal
-
-import (
-	grpccodes "google.golang.org/grpc/codes"
-
-	otelcodes "go.opentelemetry.io/otel/codes"
-)
-
-// conversions are the equivalence mapping from OpenTelemetry to gRPC codes.
-// Even though the underlying value should be the same all mappings are
-// explicit here to avoid any error.
-var conversions = map[otelcodes.Code]grpccodes.Code{
-	otelcodes.OK:                 grpccodes.OK,
-	otelcodes.Canceled:           grpccodes.Canceled,
-	otelcodes.Unknown:            grpccodes.Unknown,
-	otelcodes.InvalidArgument:    grpccodes.InvalidArgument,
-	otelcodes.DeadlineExceeded:   grpccodes.DeadlineExceeded,
-	otelcodes.NotFound:           grpccodes.NotFound,
-	otelcodes.AlreadyExists:      grpccodes.AlreadyExists,
-	otelcodes.PermissionDenied:   grpccodes.PermissionDenied,
-	otelcodes.ResourceExhausted:  grpccodes.ResourceExhausted,
-	otelcodes.FailedPrecondition: grpccodes.FailedPrecondition,
-	otelcodes.Aborted:            grpccodes.Aborted,
-	otelcodes.OutOfRange:         grpccodes.OutOfRange,
-	otelcodes.Unimplemented:      grpccodes.Unimplemented,
-	otelcodes.Internal:           grpccodes.Internal,
-	otelcodes.Unavailable:        grpccodes.Unavailable,
-	otelcodes.DataLoss:           grpccodes.DataLoss,
-	otelcodes.Unauthenticated:    grpccodes.Unauthenticated,
-}
-
-// ConvertCode converts an OpenTelemetry Code into the equivalent gRPC code.
-func ConvertCode(code otelcodes.Code) grpccodes.Code {
-	return conversions[code]
-}
--- a/sdk/trace/span.go
+++ b/sdk/trace/span.go
@ -89,7 +89,7 @@ func (s *span) SetStatus(code codes.Code, msg string) {
 		return
 	}
 	s.mu.Lock()
-	s.data.StatusCode = internal.ConvertCode(code)
+	s.data.StatusCode = code
 	s.data.StatusMessage = msg
 	s.mu.Unlock()
 }
@ -167,7 +167,7 @@ func (s *span) RecordError(ctx context.Context, err error, opts ...apitrace.Erro
 		cfg.Timestamp = time.Now()
 	}

-	if cfg.StatusCode != codes.OK {
+	if cfg.StatusCode != codes.Unset {
 		s.SetStatus(cfg.StatusCode, "")
 	}

--- a/sdk/trace/trace_test.go
+++ b/sdk/trace/trace_test.go
@ -26,17 +26,16 @@ import (
 	"time"

 	"go.opentelemetry.io/otel/api/global"
+	"go.opentelemetry.io/otel/codes"
 	"go.opentelemetry.io/otel/label"

 	"github.com/google/go-cmp/cmp"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
-	grpccodes "google.golang.org/grpc/codes"

 	"go.opentelemetry.io/otel/api/apitest"
 	"go.opentelemetry.io/otel/api/trace"
 	apitrace "go.opentelemetry.io/otel/api/trace"
-	otelcodes "go.opentelemetry.io/otel/codes"
 	ottest "go.opentelemetry.io/otel/internal/testing"
 	export "go.opentelemetry.io/otel/sdk/export/trace"
 	"go.opentelemetry.io/otel/sdk/instrumentation"
@ -649,7 +648,7 @@ func TestSetSpanStatus(t *testing.T) {
 	tp := NewTracerProvider(WithSyncer(te))

 	span := startSpan(tp, "SpanStatus")
-	span.SetStatus(otelcodes.Canceled, "canceled")
+	span.SetStatus(codes.Error, "Error")
 	got, err := endSpan(te, span)
 	if err != nil {
 		t.Fatal(err)
@ -663,8 +662,8 @@ func TestSetSpanStatus(t *testing.T) {
 		ParentSpanID:           sid,
 		Name:                   "span0",
 		SpanKind:               apitrace.SpanKindInternal,
-		StatusCode:             grpccodes.Canceled,
-		StatusMessage:          "canceled",
+		StatusCode:             codes.Error,
+		StatusMessage:          "Error",
 		HasRemoteParent:        true,
 		InstrumentationLibrary: instrumentation.Library{Name: "SpanStatus"},
 	}
@ -1027,7 +1026,7 @@ func TestRecordErrorWithStatus(t *testing.T) {

 	testErr := ottest.NewTestError("test error")
 	errTime := time.Now()
-	testStatus := otelcodes.Unknown
+	testStatus := codes.Error
 	span.RecordError(context.Background(), testErr,
 		apitrace.WithErrorTime(errTime),
 		apitrace.WithErrorStatus(testStatus),
@ -1046,7 +1045,7 @@ func TestRecordErrorWithStatus(t *testing.T) {
 		ParentSpanID:    sid,
 		Name:            "span0",
 		SpanKind:        apitrace.SpanKindInternal,
-		StatusCode:      grpccodes.Unknown,
+		StatusCode:      codes.Error,
 		StatusMessage:   "",
 		HasRemoteParent: true,
 		MessageEvents: []export.Event{
@ -1087,7 +1086,7 @@ func TestRecordErrorNil(t *testing.T) {
 		Name:                   "span0",
 		SpanKind:               apitrace.SpanKindInternal,
 		HasRemoteParent:        true,
-		StatusCode:             grpccodes.OK,
+		StatusCode:             codes.Unset,
 		StatusMessage:          "",
 		InstrumentationLibrary: instrumentation.Library{Name: "RecordErrorNil"},
 	}
--- a/semconv/http.go
+++ b/semconv/http.go
@ -264,11 +264,11 @@ var validRangesPerCategory = map[int][]codeRange{
 // SpanStatusFromHTTPStatusCode generates a status code and a message
 // as specified by the OpenTelemetry specification for a span.
 func SpanStatusFromHTTPStatusCode(code int) (codes.Code, string) {
-	spanCode := func() codes.Code {
+	spanCode, valid := func() (codes.Code, bool) {
 		category := code / 100
 		ranges, ok := validRangesPerCategory[category]
 		if !ok {
-			return codes.Unknown
+			return codes.Error, false
 		}
 		ok = false
 		for _, crange := range ranges {
@ -278,39 +278,14 @@ func SpanStatusFromHTTPStatusCode(code int) (codes.Code, string) {
 			}
 		}
 		if !ok {
-			return codes.Unknown
-		}
-		switch code {
-		case http.StatusUnauthorized:
-			return codes.Unauthenticated
-		case http.StatusForbidden:
-			return codes.PermissionDenied
-		case http.StatusNotFound:
-			return codes.NotFound
-		case http.StatusTooManyRequests:
-			return codes.ResourceExhausted
-		case http.StatusNotImplemented:
-			return codes.Unimplemented
-		case http.StatusServiceUnavailable:
-			return codes.Unavailable
-		case http.StatusGatewayTimeout:
-			return codes.DeadlineExceeded
+			return codes.Error, false
 		}
 		if category > 0 && category < 4 {
-			return codes.OK
+			return codes.Unset, true
 		}
-		if category == 4 {
-			return codes.InvalidArgument
-		}
-		if category == 5 {
-			return codes.Internal
-		}
-		// this really should not happen, if we get there then
-		// it means that the code got out of sync with
-		// validRangesPerCategory map
-		return codes.Unknown
+		return codes.Error, true
 	}()
-	if spanCode == codes.Unknown {
+	if !valid {
 		return spanCode, fmt.Sprintf("Invalid HTTP status code %d", code)
 	}
 	return spanCode, fmt.Sprintf("HTTP status code: %d", code)
--- a/semconv/http_test.go
+++ b/semconv/http_test.go
@ -695,40 +695,32 @@ func TestHTTPAttributesFromHTTPStatusCode(t *testing.T) {

 func TestSpanStatusFromHTTPStatusCode(t *testing.T) {
 	for code := 0; code < 1000; code++ {
-		expected := getExpectedGRPCCodeForHTTPCode(code)
+		expected := getExpectedCodeForHTTPCode(code)
 		got, _ := SpanStatusFromHTTPStatusCode(code)
 		assert.Equalf(t, expected, got, "%s vs %s", expected, got)
 	}
 }

-func getExpectedGRPCCodeForHTTPCode(code int) codes.Code {
+func getExpectedCodeForHTTPCode(code int) codes.Code {
 	if http.StatusText(code) == "" {
-		return codes.Unknown
+		return codes.Error
 	}
 	switch code {
-	case http.StatusUnauthorized:
-		return codes.Unauthenticated
-	case http.StatusForbidden:
-		return codes.PermissionDenied
-	case http.StatusNotFound:
-		return codes.NotFound
-	case http.StatusTooManyRequests:
-		return codes.ResourceExhausted
-	case http.StatusNotImplemented:
-		return codes.Unimplemented
-	case http.StatusServiceUnavailable:
-		return codes.Unavailable
-	case http.StatusGatewayTimeout:
-		return codes.DeadlineExceeded
+	case
+		http.StatusUnauthorized,
+		http.StatusForbidden,
+		http.StatusNotFound,
+		http.StatusTooManyRequests,
+		http.StatusNotImplemented,
+		http.StatusServiceUnavailable,
+		http.StatusGatewayTimeout:
+		return codes.Error
 	}
 	category := code / 100
-	if category < 4 {
-		return codes.OK
+	if category > 0 && category < 4 {
+		return codes.Unset
 	}
-	if category < 5 {
-		return codes.InvalidArgument
-	}
-	return codes.Internal
+	return codes.Error
 }

 func assertElementsMatch(t *testing.T, expected, got []label.KeyValue, format string, args ...interface{}) {