[extension/encodingextension] Implement encoding extension

.chloggen/encodingextension_impl.yaml

@@ -0,0 +1,27 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: new_component
+
+# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver)
+component: encodingextension
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Add implementation of encodingextension
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [6272]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:
+
+# If your change doesn't affect end users or the exported elements of any package,
+# you should instead start your pull request title with [chore] or use the "Skip Changelog" label.
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: []

.github/CODEOWNERS

@@ -91,7 +91,8 @@ extension/asapauthextension/                                            @open-te
 extension/awsproxy/                                                     @open-telemetry/collector-contrib-approvers @Aneurysm9 @mxiamxia
 extension/basicauthextension/                                           @open-telemetry/collector-contrib-approvers @jpkrohling @svrakitin @frzifus
 extension/bearertokenauthextension/                                     @open-telemetry/collector-contrib-approvers @jpkrohling @pavankrish123 @frzifus
-extension/encodingextension/                                            @open-telemetry/collector-contrib-approvers @MovieStoreGuy
+extension/encoding/jaegerencodingextension/                             @open-telemetry/collector-contrib-approvers @MovieStoreGuy @atoulme
+extension/encoding/textencodingextension/                               @open-telemetry/collector-contrib-approvers @MovieStoreGuy @atoulme
 extension/headerssetterextension/                                       @open-telemetry/collector-contrib-approvers @jpkrohling
 extension/healthcheckextension/                                         @open-telemetry/collector-contrib-approvers @jpkrohling
 extension/httpforwarder/                                                @open-telemetry/collector-contrib-approvers @atoulme @rmfitzpatrick

.github/ISSUE_TEMPLATE/bug_report.yaml

@@ -84,6 +84,8 @@ body:
       - extension/basicauth
       - extension/bearertokenauth
       - extension/encoding
+      - extension/encoding/jaeger
+      - extension/encoding/text
       - extension/headerssetter
       - extension/healthcheck
       - extension/httpforwarder

.github/ISSUE_TEMPLATE/feature_request.yaml

@@ -78,6 +78,8 @@ body:
       - extension/basicauth
       - extension/bearertokenauth
       - extension/encoding
+      - extension/encoding/jaeger
+      - extension/encoding/text
       - extension/headerssetter
       - extension/healthcheck
       - extension/httpforwarder

.github/ISSUE_TEMPLATE/other.yaml

@@ -78,6 +78,8 @@ body:
       - extension/basicauth
       - extension/bearertokenauth
       - extension/encoding
+      - extension/encoding/jaeger
+      - extension/encoding/text
       - extension/headerssetter
       - extension/healthcheck
       - extension/httpforwarder

extension/encoding/jaegerencodingextension/Makefile

@@ -0,0 +1 @@
+include ../../../Makefile.Common

extension/encoding/jaegerencodingextension/README.md

@@ -0,0 +1,12 @@
+# Jaeger encoding extension
+
+<!-- status autogenerated section -->
+| Status        |           |
+| ------------- |-----------|
+| Stability     | [development]  |
+| Distributions | [] |
+| Issues        | [![Open issues](https://img.shields.io/github/issues-search/open-telemetry/opentelemetry-collector-contrib?query=is%3Aissue%20is%3Aopen%20label%3Aextension%2Fjaegerencoding%20&label=open&color=orange&logo=opentelemetry)](https://github.com/open-telemetry/opentelemetry-collector-contrib/issues?q=is%3Aopen+is%3Aissue+label%3Aextension%2Fjaegerencoding) [![Closed issues](https://img.shields.io/github/issues-search/open-telemetry/opentelemetry-collector-contrib?query=is%3Aissue%20is%3Aclosed%20label%3Aextension%2Fjaegerencoding%20&label=closed&color=blue&logo=opentelemetry)](https://github.com/open-telemetry/opentelemetry-collector-contrib/issues?q=is%3Aclosed+is%3Aissue+label%3Aextension%2Fjaegerencoding) |
+| [Code Owners](https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/main/CONTRIBUTING.md#becoming-a-code-owner)    | [@MovieStoreGuy](https://www.github.com/MovieStoreGuy), [@atoulme](https://www.github.com/atoulme) |
+
+[development]: https://github.com/open-telemetry/opentelemetry-collector#development
+<!-- end autogenerated section -->

extension/encoding/jaegerencodingextension/config.go

@@ -0,0 +1,26 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package jaegerencodingextension // import "github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/jaegerencodingextension"
+import (
+	"fmt"
+)
+
+type JaegerProtocol string
+
+const (
+	protobuf = JaegerProtocol("protobuf")
+)
+
+type Config struct {
+	Protocol JaegerProtocol `mapstructure:"protocol"`
+}
+
+func (c *Config) Validate() error {
+	switch c.Protocol {
+	case protobuf:
+	default:
+		return fmt.Errorf("invalid protocol %q", c.Protocol)
+	}
+	return nil
+}

extension/encoding/jaegerencodingextension/config_test.go

@@ -0,0 +1,17 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package jaegerencodingextension
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestValidate(t *testing.T) {
+	c := &Config{}
+	assert.Error(t, c.Validate(), "ex")
+	c.Protocol = protobuf
+	assert.NoError(t, c.Validate())
+}

extension/encoding/jaegerencodingextension/doc.go

@@ -0,0 +1,5 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+//go:generate mdatagen metadata.yaml
+package jaegerencodingextension // import "github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/jaegerencodingextension"

extension/encoding/jaegerencodingextension/extension.go

@@ -0,0 +1,37 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package jaegerencodingextension // import "github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/jaegerencodingextension"
+
+import (
+	"context"
+	"fmt"
+
+	"go.opentelemetry.io/collector/component"
+	"go.opentelemetry.io/collector/pdata/ptrace"
+)
+
+var _ ptrace.Unmarshaler = &jaegerExtension{}
+
+type jaegerExtension struct {
+	config      *Config
+	unmarshaler ptrace.Unmarshaler
+}
+
+func (e *jaegerExtension) UnmarshalTraces(buf []byte) (ptrace.Traces, error) {
+	return e.unmarshaler.UnmarshalTraces(buf)
+}
+
+func (e *jaegerExtension) Start(_ context.Context, _ component.Host) error {
+	switch e.config.Protocol {
+	case protobuf:
+		e.unmarshaler = jaegerProtobufTrace{}
+	default:
+		return fmt.Errorf("unsupported protocol: %s", e.config.Protocol)
+	}
+	return nil
+}
+
+func (e *jaegerExtension) Shutdown(_ context.Context) error {
+	return nil
+}

extension/encoding/jaegerencodingextension/extension_test.go

@@ -0,0 +1,20 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package jaegerencodingextension
+
+import (
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"go.opentelemetry.io/collector/component/componenttest"
+)
+
+func TestExtension_Start(t *testing.T) {
+	j := &jaegerExtension{
+		config: createDefaultConfig().(*Config),
+	}
+	err := j.Start(context.Background(), componenttest.NewNopHost())
+	require.NoError(t, err)
+}

extension/encoding/jaegerencodingextension/factory.go

@@ -0,0 +1,32 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package jaegerencodingextension // import "github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/jaegerencodingextension"
+
+import (
+	"context"
+
+	"go.opentelemetry.io/collector/component"
+	"go.opentelemetry.io/collector/extension"
+
+	"github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/jaegerencodingextension/internal/metadata"
+)
+
+func NewFactory() extension.Factory {
+	return extension.NewFactory(
+		metadata.Type,
+		createDefaultConfig,
+		createExtension,
+		metadata.ExtensionStability,
+	)
+}
+
+func createExtension(_ context.Context, _ extension.CreateSettings, config component.Config) (extension.Extension, error) {
+	return &jaegerExtension{
+		config: config.(*Config),
+	}, nil
+}
+
+func createDefaultConfig() component.Config {
+	return &Config{Protocol: protobuf}
+}

extension/encoding/jaegerencodingextension/go.mod

@@ -0,0 +1,53 @@
+module github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/jaegerencodingextension
+
+go 1.20
+
+require (
+	github.com/jaegertracing/jaeger v1.49.0
+	github.com/open-telemetry/opentelemetry-collector-contrib/pkg/translator/jaeger v0.86.0
+	github.com/stretchr/testify v1.8.4
+	go.opentelemetry.io/collector/component v0.86.0
+	go.opentelemetry.io/collector/extension v0.86.0
+	go.opentelemetry.io/collector/pdata v1.0.0-rcv0015
+)
+
+require (
+	github.com/apache/thrift v0.19.0 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang/protobuf v1.5.3 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/knadh/koanf v1.5.0 // indirect
+	github.com/knadh/koanf/v2 v2.0.1 // indirect
+	github.com/mitchellh/copystructure v1.2.0 // indirect
+	github.com/mitchellh/mapstructure v1.5.1-0.20220423185008-bf980b35cac4 // indirect
+	github.com/mitchellh/reflectwalk v1.0.2 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/open-telemetry/opentelemetry-collector-contrib/internal/coreinternal v0.86.0 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	go.opentelemetry.io/collector/config/configtelemetry v0.86.0 // indirect
+	go.opentelemetry.io/collector/confmap v0.86.0 // indirect
+	go.opentelemetry.io/collector/featuregate v1.0.0-rcv0015 // indirect
+	go.opentelemetry.io/collector/semconv v0.86.0 // indirect
+	go.opentelemetry.io/otel v1.18.0 // indirect
+	go.opentelemetry.io/otel/metric v1.18.0 // indirect
+	go.opentelemetry.io/otel/trace v1.18.0 // indirect
+	go.uber.org/multierr v1.11.0 // indirect
+	go.uber.org/zap v1.26.0 // indirect
+	golang.org/x/net v0.15.0 // indirect
+	golang.org/x/sys v0.12.0 // indirect
+	golang.org/x/text v0.13.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20230711160842-782d3b101e98 // indirect
+	google.golang.org/grpc v1.58.2 // indirect
+	google.golang.org/protobuf v1.31.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)
+
+replace github.com/open-telemetry/opentelemetry-collector-contrib/internal/coreinternal => ../../../internal/coreinternal
+
+replace github.com/open-telemetry/opentelemetry-collector-contrib/pkg/pdatautil => ../../../pkg/pdatautil
+
+replace github.com/open-telemetry/opentelemetry-collector-contrib/pkg/pdatatest => ../../../pkg/pdatatest
+
+replace github.com/open-telemetry/opentelemetry-collector-contrib/pkg/translator/jaeger => ../../../pkg/translator/jaeger