[chore][extension/encoding] add test cases covering encoding extension (#28683)

**Description:** 
This PR does the following:
- Test cases for all the known encoding extensions
- Add extensions to builder and update components.go
- Run `make crosslink`

I believe we can use this extension for `pulsarreceiver` for now and see
how it performs in production. I will raise a follow-up PR after this
one.

**Link to tracking Issue:**
#28686

---------

Co-authored-by: Antoine Toulme <[email protected]>

Author: VihasMakwana

cmd/otelcontribcol/builder-config.yaml

@@ -31,6 +31,16 @@ extensions:
     import: github.com/open-telemetry/opentelemetry-collector-contrib/extension/storage/filestorage
   - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/extension/storage v0.91.0
     import: github.com/open-telemetry/opentelemetry-collector-contrib/extension/storage/dbstorage
+  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/otlpencodingextension v0.91.0
+    import: github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/otlpencodingextension
+  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/jaegerencodingextension v0.91.0
+    import: github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/jaegerencodingextension
+  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/jsonlogencodingextension v0.91.0
+    import: github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/jsonlogencodingextension
+  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/textencodingextension v0.91.0
+    import: github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/textencodingextension
+  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/zipkinencodingextension v0.91.0
+    import: github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/zipkinencodingextension
 
 exporters:
   - gomod: go.opentelemetry.io/collector/exporter/debugexporter v0.91.0
@@ -428,6 +438,12 @@ replaces:
   - github.com/open-telemetry/opentelemetry-collector-contrib/pkg/translator/azure => ../../pkg/translator/azure
   - github.com/open-telemetry/opentelemetry-collector-contrib/pkg/translator/skywalking => ../../pkg/translator/skywalking
   - github.com/open-telemetry/opentelemetry-collector-contrib/internal/collectd => ../../internal/collectd
+  - github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding => ../../extension/encoding
+  - github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/otlpencodingextension => ../../extension/encoding/otlpencodingextension
+  - github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/zipkinencodingextension => ../../extension/encoding/zipkinencodingextension
+  - github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/jsonlogencodingextension => ../../extension/encoding/jsonlogencodingextension
+  - github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/textencodingextension => ../../extension/encoding/textencodingextension
+  - github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/jaegerencodingextension => ../../extension/encoding/jaegerencodingextension
   - github.com/open-telemetry/opentelemetry-collector-contrib/extension/remotetapextension => ../../extension/remotetapextension
   - github.com/open-telemetry/opentelemetry-collector-contrib/extension/opampextension => ../../extension/opampextension
   - github.com/open-telemetry/opentelemetry-collector-contrib/testbed/mockdatasenders/mockdatadogagentexporter => ../../testbed/mockdatasenders/mockdatadogagentexporter

cmd/otelcontribcol/components.go

@@ -215,6 +215,21 @@ func TestDefaultExtensions(t *testing.T) {
 				return extFactories["jaegerremotesampling"].CreateDefaultConfig().(*jaegerremotesampling.Config)
 			},
 		},
+		{
+			extension: "otlp_encoding",
+		},
+		{
+			extension: "text_encoding",
+		},
+		{
+			extension: "jaeger_encoding",
+		},
+		{
+			extension: "json_log_encoding",
+		},
+		{
+			extension: "zipkin_encoding",
+		},
 		{
 			extension: "remotetap",
 			getConfigFn: func() component.Config {

cmd/otelcontribcol/extensions_test.go

@@ -59,6 +59,11 @@ require (
 	github.com/open-telemetry/opentelemetry-collector-contrib/extension/awsproxy v0.91.0
 	github.com/open-telemetry/opentelemetry-collector-contrib/extension/basicauthextension v0.91.0
 	github.com/open-telemetry/opentelemetry-collector-contrib/extension/bearertokenauthextension v0.91.0
+	github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/jaegerencodingextension v0.91.0
+	github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/jsonlogencodingextension v0.91.0
+	github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/otlpencodingextension v0.91.0
+	github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/textencodingextension v0.91.0
+	github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/zipkinencodingextension v0.91.0
 	github.com/open-telemetry/opentelemetry-collector-contrib/extension/headerssetterextension v0.91.0
 	github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextension v0.91.0
 	github.com/open-telemetry/opentelemetry-collector-contrib/extension/httpforwarder v0.91.0
@@ -524,6 +529,7 @@ require (
 	github.com/nginxinc/nginx-prometheus-exporter v0.8.1-0.20201110005315-f5a5f8086c19 // indirect
 	github.com/oklog/ulid/v2 v2.1.0 // indirect
 	github.com/open-telemetry/opamp-go v0.10.0 // indirect
+	github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding v0.91.0 // indirect
 	github.com/open-telemetry/opentelemetry-collector-contrib/extension/observer v0.91.0 // indirect
 	github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/awsutil v0.91.0 // indirect
 	github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/containerinsight v0.91.0 // indirect
@@ -1163,6 +1169,18 @@ replace github.com/open-telemetry/opentelemetry-collector-contrib/pkg/translator
 
 replace github.com/open-telemetry/opentelemetry-collector-contrib/internal/collectd => ../../internal/collectd
 
+replace github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding => ../../extension/encoding
+
+replace github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/otlpencodingextension => ../../extension/encoding/otlpencodingextension
+
+replace github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/zipkinencodingextension => ../../extension/encoding/zipkinencodingextension
+
+replace github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/jsonlogencodingextension => ../../extension/encoding/jsonlogencodingextension
+
+replace github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/textencodingextension => ../../extension/encoding/textencodingextension
+
+replace github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/jaegerencodingextension => ../../extension/encoding/jaegerencodingextension
+
 replace github.com/open-telemetry/opentelemetry-collector-contrib/extension/remotetapextension => ../../extension/remotetapextension
 
 replace github.com/open-telemetry/opentelemetry-collector-contrib/extension/opampextension => ../../extension/opampextension

cmd/otelcontribcol/go.mod

@@ -8,6 +8,7 @@ require (
 )
 
 require (
+	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang/protobuf v1.5.3 // indirect
 	github.com/hashicorp/go-version v1.6.0 // indirect
@@ -20,6 +21,7 @@ require (
 	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/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
 	go.opentelemetry.io/collector/component v0.91.0 // indirect
 	go.opentelemetry.io/collector/config/configtelemetry v0.91.0 // indirect
 	go.opentelemetry.io/collector/confmap v0.91.0 // indirect
@@ -30,9 +32,9 @@ require (
 	go.uber.org/multierr v1.11.0 // indirect
 	go.uber.org/zap v1.26.0 // indirect
 	golang.org/x/net v0.18.0 // indirect
-	golang.org/x/sys v0.14.0 // indirect
+	golang.org/x/sys v0.15.0 // indirect
 	golang.org/x/text v0.14.0 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20230822172742-b8732ec3820d // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20231012201019-e917dd12ba7a // indirect
 	google.golang.org/grpc v1.59.0 // indirect
 	google.golang.org/protobuf v1.31.0 // indirect
 )

extension/encoding/go.mod

@@ -9,12 +9,48 @@ import (
 
 	"github.com/stretchr/testify/require"
 	"go.opentelemetry.io/collector/component/componenttest"
+	"go.opentelemetry.io/collector/extension"
+	"go.opentelemetry.io/collector/extension/extensiontest"
 )
 
 func TestExtension_Start(t *testing.T) {
-	j := &jaegerExtension{
-		config: createDefaultConfig().(*Config),
+	tests := []struct {
+		name         string
+		getExtension func() (extension.Extension, error)
+		expectedErr  string
+	}{
+		{
+			name: "jaegerProtobuf",
+			getExtension: func() (extension.Extension, error) {
+				factory := NewFactory()
+				return factory.CreateExtension(context.Background(), extensiontest.NewNopCreateSettings(), factory.CreateDefaultConfig())
+			},
+		},
+		{
+			name: "jaeger_invalid",
+			getExtension: func() (extension.Extension, error) {
+				factory := NewFactory()
+				cfg := factory.CreateDefaultConfig()
+				cfg.(*Config).Protocol = "xyz"
+				return factory.CreateExtension(context.Background(), extensiontest.NewNopCreateSettings(), cfg)
+			},
+			expectedErr: "unsupported protocol: \"xyz\"",
+		},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			ext, err := test.getExtension()
+			if test.expectedErr != "" && err != nil {
+				require.ErrorContains(t, err, test.expectedErr)
+			} else {
+				require.NoError(t, err)
+			}
+			err = ext.Start(context.Background(), componenttest.NewNopHost())
+			if test.expectedErr != "" && err != nil {
+				require.ErrorContains(t, err, test.expectedErr)
+			} else {
+				require.NoError(t, err)
+			}
+		})
 	}
-	err := j.Start(context.Background(), componenttest.NewNopHost())
-	require.NoError(t, err)
 }

extension/encoding/go.sum

@@ -12,7 +12,7 @@ require (
 )
 
 require (
-	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang/protobuf v1.5.3 // indirect
 	github.com/hashicorp/go-version v1.6.0 // indirect
@@ -24,7 +24,7 @@ require (
 	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/pmezard/go-difflib v1.0.0 // indirect
+	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
 	go.opentelemetry.io/collector/config/configtelemetry v0.91.0 // indirect
 	go.opentelemetry.io/collector/confmap v0.91.0 // indirect
 	go.opentelemetry.io/collector/featuregate v1.0.0 // indirect
@@ -34,9 +34,9 @@ require (
 	go.uber.org/multierr v1.11.0 // indirect
 	go.uber.org/zap v1.26.0 // indirect
 	golang.org/x/net v0.18.0 // indirect
-	golang.org/x/sys v0.14.0 // indirect
+	golang.org/x/sys v0.15.0 // indirect
 	golang.org/x/text v0.14.0 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20230822172742-b8732ec3820d // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20231012201019-e917dd12ba7a // indirect
 	google.golang.org/grpc v1.59.0 // indirect
 	google.golang.org/protobuf v1.31.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect