[chore] update latest deps, ensure readme up to date (#1873)

* [chore] update latest deps, ensure readme up to date

* remove double entry

vendor/go.opentelemetry.io/otel/exporters/otlp/otlptrace/README.md

@@ -2,7 +2,7 @@
 
 [![Go Reference](https://pkg.go.dev/badge/go.opentelemetry.io/otel/exporters/otlp/otlptrace.svg)](https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp/otlptrace)
 
-[OpenTelemetry Protocol Exporter](https://github.com/open-telemetry/opentelemetry-specification/blob/v1.5.0/specification/protocol/exporter.md) implementation.
+[OpenTelemetry Protocol Exporter](https://github.com/open-telemetry/opentelemetry-specification/blob/v1.20.0/specification/protocol/exporter.md) implementation.
 
 ## Installation
 
@@ -36,7 +36,7 @@ The `otlptracehttp` package implements a client for the span exporter that sends
 The following environment variables can be used (instead of options objects) to
 override the default configuration. For more information about how each of
 these environment variables is interpreted, see [the OpenTelemetry
-specification](https://github.com/open-telemetry/opentelemetry-specification/blob/v1.8.0/specification/protocol/exporter.md).
+specification](https://github.com/open-telemetry/opentelemetry-specification/blob/v1.20.0/specification/protocol/exporter.md).
 
 | Environment variable                                                     | Option                        | Default value                                            |
 | ------------------------------------------------------------------------ |------------------------------ | -------------------------------------------------------- |

vendor/go.opentelemetry.io/otel/exporters/otlp/otlptrace/internal/header.go

@@ -0,0 +1,25 @@
+// 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 "go.opentelemetry.io/otel/exporters/otlp/otlptrace/internal"
+
+import (
+	"go.opentelemetry.io/otel/exporters/otlp/otlptrace"
+)
+
+// GetUserAgentHeader returns an OTLP header value form "OTel OTLP Exporter Go/{{ .Version }}"
+// https://github.com/open-telemetry/opentelemetry-specification/blob/v1.20.0/specification/protocol/exporter.md#user-agent
+func GetUserAgentHeader() string {
+	return "OTel OTLP Exporter Go/" + otlptrace.Version()
+}

vendor/go.opentelemetry.io/otel/exporters/otlp/otlptrace/internal/otlpconfig/options.go

@@ -27,6 +27,7 @@ import (
 
 	"go.opentelemetry.io/otel/exporters/otlp/internal"
 	"go.opentelemetry.io/otel/exporters/otlp/internal/retry"
+	otinternal "go.opentelemetry.io/otel/exporters/otlp/otlptrace/internal"
 )
 
 const (
@@ -97,7 +98,7 @@ func NewGRPCConfig(opts ...GRPCOption) Config {
 			Timeout:     DefaultTimeout,
 		},
 		RetryConfig: retry.DefaultConfig,
-		DialOptions: []grpc.DialOption{grpc.WithUserAgent(internal.GetUserAgentHeader())},
+		DialOptions: []grpc.DialOption{grpc.WithUserAgent(otinternal.GetUserAgentHeader())},
 	}
 	cfg = ApplyGRPCEnvConfigs(cfg)
 	for _, opt := range opts {

vendor/go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc/client.go

@@ -130,13 +130,16 @@ var errAlreadyStopped = errors.New("the client is already stopped")
 // If the client has already stopped, an error will be returned describing
 // this.
 func (c *client) Stop(ctx context.Context) error {
+	// Make sure to return context error if the context is done when calling this method.
+	err := ctx.Err()
+
 	// Acquire the c.tscMu lock within the ctx lifetime.
 	acquired := make(chan struct{})
 	go func() {
 		c.tscMu.Lock()
 		close(acquired)
 	}()
-	var err error
+
 	select {
 	case <-ctx.Done():
 		// The Stop timeout is reached. Kill any remaining exports to force

vendor/go.opentelemetry.io/otel/exporters/otlp/otlptrace/version.go

@@ -0,0 +1,20 @@
+// 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 otlptrace // import "go.opentelemetry.io/otel/exporters/otlp/otlptrace"
+
+// Version is the current release version of the OpenTelemetry OTLP trace exporter in use.
+func Version() string {
+	return "1.16.0"
+}