[configcompression] Rename CompressionType to Type (#9416)

**Description:**
If we choose to go with the rename.

**Link to tracking Issue:** <Issue number if applicable>
Related to
#9388

---------

Co-authored-by: Pablo Baeyens <[email protected]>

.chloggen/configcompression-rename-enum.yaml

@@ -0,0 +1,25 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: deprecation
+
+# The name of the component, or a single word describing the area of concern, (e.g. otlpreceiver)
+component: configcompression
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Deprecate `CompressionType`, use `Type` instead.
+
+# One or more tracking issues or pull requests related to the change
+issues: [9416]
+
+# (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:
+
+# 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: [api]

config/configcompression/compressiontype.go

@@ -5,16 +5,41 @@ package configcompression // import "go.opentelemetry.io/collector/config/config
 
 import "fmt"
 
-type CompressionType string
+// CompressionType represents a compression method
+// Deprecated [0.94.0]: use Type instead.
+type CompressionType = Type
+
+// Type represents a compression method
+type Type string
 
 const (
-	Gzip    CompressionType = "gzip"
-	Zlib    CompressionType = "zlib"
+	TypeGzip    Type = "gzip"
+	TypeZlib    Type = "zlib"
+	TypeDeflate Type = "deflate"
+	TypeSnappy  Type = "snappy"
+	TypeZstd    Type = "zstd"
+	typeNone    Type = "none"
+	typeEmpty   Type = ""
+
+	// Gzip
+	// Deprecated [0.94.0]: use TypeGzip instead.
+	Gzip CompressionType = "gzip"
+
+	// Zlib
+	// Deprecated [0.94.0]: use TypeZlib instead.
+	Zlib CompressionType = "zlib"
+
+	// Deflate
+	// Deprecated [0.94.0]: use TypeDeflate instead.
 	Deflate CompressionType = "deflate"
-	Snappy  CompressionType = "snappy"
-	Zstd    CompressionType = "zstd"
-	none    CompressionType = "none"
-	empty   CompressionType = ""
+
+	// Snappy
+	// Deprecated [0.94.0]: use TypeSnappy instead.
+	Snappy CompressionType = "snappy"
+
+	// Zstd
+	// Deprecated [0.94.0]: use TypeZstd instead.
+	Zstd CompressionType = "zstd"
 )
 
 // IsCompressed returns false if CompressionType is nil, none, or empty. Otherwise it returns true.
@@ -26,19 +51,19 @@ func IsCompressed(compressionType CompressionType) bool {
 
 // IsCompressed returns false if CompressionType is nil, none, or empty.
 // Otherwise, returns true.
-func (ct *CompressionType) IsCompressed() bool {
-	return ct != nil && *ct != empty && *ct != none
+func (ct *Type) IsCompressed() bool {
+	return *ct != typeEmpty && *ct != typeNone
 }
 
-func (ct *CompressionType) UnmarshalText(in []byte) error {
-	switch typ := CompressionType(in); typ {
-	case Gzip,
-		Zlib,
-		Deflate,
-		Snappy,
-		Zstd,
-		none,
-		empty:
+func (ct *Type) UnmarshalText(in []byte) error {
+	switch typ := Type(in); typ {
+	case TypeGzip,
+		TypeZlib,
+		TypeDeflate,
+		TypeSnappy,
+		TypeZstd,
+		typeNone,
+		typeEmpty:
 		*ct = typ
 		return nil
 	default:

config/configcompression/compressiontype_test.go

@@ -65,14 +65,14 @@ func TestUnmarshalText(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			temp := none
+			temp := typeNone
 			err := temp.UnmarshalText(tt.compressionName)
 			if tt.shouldError {
 				assert.Error(t, err)
 				return
 			}
 			require.NoError(t, err)
-			ct := CompressionType(tt.compressionName)
+			ct := Type(tt.compressionName)
 			assert.Equal(t, temp, ct)
 			assert.Equal(t, tt.isCompressed, ct.IsCompressed())
 		})

config/configgrpc/configgrpc.go

@@ -59,7 +59,7 @@ type ClientConfig struct {
 	Endpoint string `mapstructure:"endpoint"`
 
 	// The compression key for supported compression types within collector.
-	Compression configcompression.CompressionType `mapstructure:"compression"`
+	Compression configcompression.Type `mapstructure:"compression"`
 
 	// TLSSetting struct exposes TLS client configuration.
 	TLSSetting configtls.TLSClientSetting `mapstructure:"tls"`
@@ -390,13 +390,13 @@ func (gss *ServerConfig) toServerOption(host component.Host, settings component.
 }
 
 // getGRPCCompressionName returns compression name registered in grpc.
-func getGRPCCompressionName(compressionType configcompression.CompressionType) (string, error) {
+func getGRPCCompressionName(compressionType configcompression.Type) (string, error) {
 	switch compressionType {
-	case configcompression.Gzip:
+	case configcompression.TypeGzip:
 		return gzip.Name, nil
-	case configcompression.Snappy:
+	case configcompression.TypeSnappy:
 		return snappy.Name, nil
-	case configcompression.Zstd:
+	case configcompression.TypeZstd:
 		return zstd.Name, nil
 	default:
 		return "", fmt.Errorf("unsupported compression type %q", compressionType)

config/configgrpc/configgrpc_test.go

@@ -89,7 +89,7 @@ func TestAllGrpcClientSettings(t *testing.T) {
 					"test": "test",
 				},
 				Endpoint:    "localhost:1234",
-				Compression: configcompression.Gzip,
+				Compression: configcompression.TypeGzip,
 				TLSSetting: configtls.TLSClientSetting{
 					Insecure: false,
 				},
@@ -118,7 +118,7 @@ func TestAllGrpcClientSettings(t *testing.T) {
 					"test": "test",
 				},
 				Endpoint:    "localhost:1234",
-				Compression: configcompression.Snappy,
+				Compression: configcompression.TypeSnappy,
 				TLSSetting: configtls.TLSClientSetting{
 					Insecure: false,
 				},
@@ -147,7 +147,7 @@ func TestAllGrpcClientSettings(t *testing.T) {
 					"test": "test",
 				},
 				Endpoint:    "localhost:1234",
-				Compression: configcompression.Zstd,
+				Compression: configcompression.TypeZstd,
 				TLSSetting: configtls.TLSClientSetting{
 					Insecure: false,
 				},

config/confighttp/compression.go

@@ -20,11 +20,11 @@ import (
 
 type compressRoundTripper struct {
 	rt              http.RoundTripper
-	compressionType configcompression.CompressionType
+	compressionType configcompression.Type
 	compressor      *compressor
 }
 
-func newCompressRoundTripper(rt http.RoundTripper, compressionType configcompression.CompressionType) (*compressRoundTripper, error) {
+func newCompressRoundTripper(rt http.RoundTripper, compressionType configcompression.Type) (*compressRoundTripper, error) {
 	encoder, err := newCompressor(compressionType)
 	if err != nil {
 		return nil, err

config/confighttp/compression_test.go

@@ -33,7 +33,7 @@ func TestHTTPClientCompression(t *testing.T) {
 
 	tests := []struct {
 		name        string
-		encoding    configcompression.CompressionType
+		encoding    configcompression.Type
 		reqBody     []byte
 		shouldError bool
 	}{
@@ -51,31 +51,31 @@ func TestHTTPClientCompression(t *testing.T) {
 		},
 		{
 			name:        "ValidGzip",
-			encoding:    configcompression.Gzip,
+			encoding:    configcompression.TypeGzip,
 			reqBody:     compressedGzipBody.Bytes(),
 			shouldError: false,
 		},
 		{
 			name:        "ValidZlib",
-			encoding:    configcompression.Zlib,
+			encoding:    configcompression.TypeZlib,
 			reqBody:     compressedZlibBody.Bytes(),
 			shouldError: false,
 		},
 		{
 			name:        "ValidDeflate",
-			encoding:    configcompression.Deflate,
+			encoding:    configcompression.TypeDeflate,
 			reqBody:     compressedDeflateBody.Bytes(),
 			shouldError: false,
 		},
 		{
 			name:        "ValidSnappy",
-			encoding:    configcompression.Snappy,
+			encoding:    configcompression.TypeSnappy,
 			reqBody:     compressedSnappyBody.Bytes(),
 			shouldError: false,
 		},
 		{
 			name:        "ValidZstd",
-			encoding:    configcompression.Zstd,
+			encoding:    configcompression.TypeZstd,
 			reqBody:     compressedZstdBody.Bytes(),
 			shouldError: false,
 		},
@@ -274,7 +274,7 @@ func TestHTTPContentCompressionRequestWithNilBody(t *testing.T) {
 	require.NoError(t, err, "failed to create request to test handler")
 
 	client := http.Client{}
-	client.Transport, err = newCompressRoundTripper(http.DefaultTransport, configcompression.Gzip)
+	client.Transport, err = newCompressRoundTripper(http.DefaultTransport, configcompression.TypeGzip)
 	require.NoError(t, err)
 	res, err := client.Do(req)
 	require.NoError(t, err)
@@ -305,7 +305,7 @@ func TestHTTPContentCompressionCopyError(t *testing.T) {
 	require.NoError(t, err)
 
 	client := http.Client{}
-	client.Transport, err = newCompressRoundTripper(http.DefaultTransport, configcompression.Gzip)
+	client.Transport, err = newCompressRoundTripper(http.DefaultTransport, configcompression.TypeGzip)
 	require.NoError(t, err)
 	_, err = client.Do(req)
 	require.Error(t, err)
@@ -329,7 +329,7 @@ func TestHTTPContentCompressionRequestBodyCloseError(t *testing.T) {
 	require.NoError(t, err)
 
 	client := http.Client{}
-	client.Transport, err = newCompressRoundTripper(http.DefaultTransport, configcompression.Gzip)
+	client.Transport, err = newCompressRoundTripper(http.DefaultTransport, configcompression.TypeGzip)
 	require.NoError(t, err)
 	_, err = client.Do(req)
 	require.Error(t, err)

config/confighttp/compressor.go

@@ -39,15 +39,15 @@ type compressor struct {
 
 // writerFactory defines writer field in CompressRoundTripper.
 // The validity of input is already checked when NewCompressRoundTripper was called in confighttp,
-func newCompressor(compressionType configcompression.CompressionType) (*compressor, error) {
+func newCompressor(compressionType configcompression.Type) (*compressor, error) {
 	switch compressionType {
-	case configcompression.Gzip:
+	case configcompression.TypeGzip:
 		return gZipPool, nil
-	case configcompression.Snappy:
+	case configcompression.TypeSnappy:
 		return snappyPool, nil
-	case configcompression.Zstd:
+	case configcompression.TypeZstd:
 		return zStdPool, nil
-	case configcompression.Zlib, configcompression.Deflate:
+	case configcompression.TypeZlib, configcompression.TypeDeflate:
 		return zLibPool, nil
 	}
 	return nil, errors.New("unsupported compression type, ")

config/confighttp/confighttp.go

@@ -65,7 +65,7 @@ type ClientConfig struct {
 	Auth *configauth.Authentication `mapstructure:"auth"`
 
 	// The compression key for supported compression types within collector.
-	Compression configcompression.CompressionType `mapstructure:"compression"`
+	Compression configcompression.Type `mapstructure:"compression"`
 
 	// MaxIdleConns is used to set a limit to the maximum idle HTTP connections the client can keep open.
 	// There's an already set value, and we want to override it only if an explicit value provided

config/confighttp/confighttp_test.go

@@ -423,8 +423,8 @@ func TestHTTPClientSettingWithAuthConfig(t *testing.T) {
 			name: "with_auth_configuration_has_extension_and_compression",
 			settings: ClientConfig{
 				Endpoint:    "localhost:1234",
-				Auth:        &configauth.Authentication{AuthenticatorID: mockID},
-				Compression: configcompression.Gzip,
+				Auth:        &configauth.Authentication{AuthenticatorID: component.NewID("mock")},
+				Compression: configcompression.TypeGzip,
 			},
 			shouldErr: false,
 			host: &mockHost{

exporter/otlpexporter/factory.go

@@ -36,7 +36,7 @@ func createDefaultConfig() component.Config {
 		ClientConfig: configgrpc.ClientConfig{
 			Headers: map[string]configopaque.String{},
 			// Default to gzip compression
-			Compression: configcompression.Gzip,
+			Compression: configcompression.TypeGzip,
 			// We almost read 0 bytes, so no need to tune ReadBufferSize.
 			WriteBufferSize: 512 * 1024,
 		},

exporter/otlpexporter/factory_test.go

@@ -33,7 +33,7 @@ func TestCreateDefaultConfig(t *testing.T) {
 	assert.Equal(t, ocfg.RetryConfig, configretry.NewDefaultBackOffConfig())
 	assert.Equal(t, ocfg.QueueConfig, exporterhelper.NewDefaultQueueSettings())
 	assert.Equal(t, ocfg.TimeoutSettings, exporterhelper.NewDefaultTimeoutSettings())
-	assert.Equal(t, ocfg.Compression, configcompression.Gzip)
+	assert.Equal(t, ocfg.Compression, configcompression.TypeGzip)
 }
 
 func TestCreateMetricsExporter(t *testing.T) {
@@ -102,7 +102,7 @@ func TestCreateTracesExporter(t *testing.T) {
 			config: &Config{
 				ClientConfig: configgrpc.ClientConfig{
 					Endpoint:    endpoint,
-					Compression: configcompression.Gzip,
+					Compression: configcompression.TypeGzip,
 				},
 			},
 		},
@@ -111,7 +111,7 @@ func TestCreateTracesExporter(t *testing.T) {
 			config: &Config{
 				ClientConfig: configgrpc.ClientConfig{
 					Endpoint:    endpoint,
-					Compression: configcompression.Snappy,
+					Compression: configcompression.TypeSnappy,
 				},
 			},
 		},
@@ -120,7 +120,7 @@ func TestCreateTracesExporter(t *testing.T) {
 			config: &Config{
 				ClientConfig: configgrpc.ClientConfig{
 					Endpoint:    endpoint,
-					Compression: configcompression.Zstd,
+					Compression: configcompression.TypeZstd,
 				},
 			},
 		},

exporter/otlphttpexporter/factory.go

@@ -41,7 +41,7 @@ func createDefaultConfig() component.Config {
 			Timeout:  30 * time.Second,
 			Headers:  map[string]configopaque.String{},
 			// Default to gzip compression
-			Compression: configcompression.Gzip,
+			Compression: configcompression.TypeGzip,
 			// We almost read 0 bytes, so no need to tune ReadBufferSize.
 			WriteBufferSize: 512 * 1024,
 		},

exporter/otlphttpexporter/factory_test.go

@@ -35,7 +35,7 @@ func TestCreateDefaultConfig(t *testing.T) {
 	assert.Equal(t, ocfg.RetryConfig.InitialInterval, 5*time.Second, "default retry InitialInterval")
 	assert.Equal(t, ocfg.RetryConfig.MaxInterval, 30*time.Second, "default retry MaxInterval")
 	assert.Equal(t, ocfg.QueueConfig.Enabled, true, "default sending queue is enabled")
-	assert.Equal(t, ocfg.Compression, configcompression.Gzip)
+	assert.Equal(t, ocfg.Compression, configcompression.TypeGzip)
 }
 
 func TestCreateMetricsExporter(t *testing.T) {
@@ -132,7 +132,7 @@ func TestCreateTracesExporter(t *testing.T) {
 			config: &Config{
 				ClientConfig: confighttp.ClientConfig{
 					Endpoint:    endpoint,
-					Compression: configcompression.Gzip,
+					Compression: configcompression.TypeGzip,
 				},
 			},
 		},
@@ -141,7 +141,7 @@ func TestCreateTracesExporter(t *testing.T) {
 			config: &Config{
 				ClientConfig: confighttp.ClientConfig{
 					Endpoint:    endpoint,
-					Compression: configcompression.Snappy,
+					Compression: configcompression.TypeSnappy,
 				},
 			},
 		},
@@ -150,7 +150,7 @@ func TestCreateTracesExporter(t *testing.T) {
 			config: &Config{
 				ClientConfig: confighttp.ClientConfig{
 					Endpoint:    endpoint,
-					Compression: configcompression.Zstd,
+					Compression: configcompression.TypeZstd,
 				},
 			},
 		},