Rename ServiceExtension to just Extension (#2581)

Signed-off-by: Bogdan Drutu <bogdandrutu@gmail.com>

Author: bogdandrutu

CHANGELOG.md

@@ -4,6 +4,7 @@
 
 ## 🛑 Breaking changes 🛑
 
+- Rename ServiceExtension to just Extension (#2581)
 - Remove `consumerdata.TraceData` (#2551)
 - Move `consumerdata.MetricsData` to `internaldata.MetricsData` (#2512)
 - Remove custom OpenCensus sematic conventions that have equivalent in otel (#2552)

component/component.go

@@ -82,7 +82,7 @@ type Host interface {
 	// Typically is used to find an extension by type or by full config name. Both cases
 	// can be done by iterating the returned map. There are typically very few extensions
 	// so there there is no performance implications due to iteration.
-	GetExtensions() map[configmodels.Extension]ServiceExtension
+	GetExtensions() map[configmodels.Extension]Extension
 
 	// Return map of exporters. Only enabled and created exporters will be returned.
 	// Typically is used to find exporters by type or by full config name. Both cases

component/componenttest/error_waiting_host.go

@@ -61,7 +61,7 @@ func (ews *ErrorWaitingHost) GetFactory(_ component.Kind, _ configmodels.Type) c
 	return nil
 }
 
-func (ews *ErrorWaitingHost) GetExtensions() map[configmodels.Extension]component.ServiceExtension {
+func (ews *ErrorWaitingHost) GetExtensions() map[configmodels.Extension]component.Extension {
 	return nil
 }
 

component/componenttest/example_factories.go

@@ -473,7 +473,7 @@ func (f *ExampleExtensionFactory) CreateDefaultConfig() configmodels.Extension {
 }
 
 // CreateExtension creates an Extension based on this config.
-func (f *ExampleExtensionFactory) CreateExtension(_ context.Context, _ component.ExtensionCreateParams, _ configmodels.Extension) (component.ServiceExtension, error) {
+func (f *ExampleExtensionFactory) CreateExtension(_ context.Context, _ component.ExtensionCreateParams, _ configmodels.Extension) (component.Extension, error) {
 	if f.FailCreation {
 		return nil, fmt.Errorf("cannot create %q extension type", f.Type())
 	}

component/componenttest/nop_host.go

@@ -35,7 +35,7 @@ func (nh *nopHost) GetFactory(_ component.Kind, _ configmodels.Type) component.F
 	return nil
 }
 
-func (nh *nopHost) GetExtensions() map[configmodels.Extension]component.ServiceExtension {
+func (nh *nopHost) GetExtensions() map[configmodels.Extension]component.Extension {
 	return nil
 }
 

component/extension.go

@@ -22,26 +22,26 @@ import (
 	"go.opentelemetry.io/collector/config/configmodels"
 )
 
-// ServiceExtension is the interface for objects hosted by the OpenTelemetry Collector that
+// Extension is the interface for objects hosted by the OpenTelemetry Collector that
 // don't participate directly on data pipelines but provide some functionality
 // to the service, examples: health check endpoint, z-pages, etc.
-type ServiceExtension interface {
+type Extension interface {
 	Component
 }
 
-// PipelineWatcher is an extra interface for ServiceExtension hosted by the OpenTelemetry
+// PipelineWatcher is an extra interface for Extension hosted by the OpenTelemetry
 // Collector that is to be implemented by extensions interested in changes to pipeline
 // states. Typically this will be used by extensions that change their behavior if data is
 // being ingested or not, e.g.: a k8s readiness probe.
 type PipelineWatcher interface {
-	// Ready notifies the ServiceExtension that all pipelines were built and the
+	// Ready notifies the Extension that all pipelines were built and the
 	// receivers were started, i.e.: the service is ready to receive data
 	// (notice that it may already have received data when this method is called).
 	Ready() error
 
-	// NotReady notifies the ServiceExtension that all receivers are about to be stopped,
+	// NotReady notifies the Extension that all receivers are about to be stopped,
 	// i.e.: pipeline receivers will not accept new data.
-	// This is sent before receivers are stopped, so the ServiceExtension can take any
+	// This is sent before receivers are stopped, so the Extension can take any
 	// appropriate action before that happens.
 	NotReady() error
 }
@@ -70,5 +70,5 @@ type ExtensionFactory interface {
 	CreateDefaultConfig() configmodels.Extension
 
 	// CreateExtension creates a service extension based on the given config.
-	CreateExtension(ctx context.Context, params ExtensionCreateParams, cfg configmodels.Extension) (ServiceExtension, error)
+	CreateExtension(ctx context.Context, params ExtensionCreateParams, cfg configmodels.Extension) (Extension, error)
 }

config/configcheck/configcheck_test.go

@@ -198,6 +198,6 @@ func (b badConfigExtensionFactory) CreateDefaultConfig() configmodels.Extension
 	}{}
 }
 
-func (b badConfigExtensionFactory) CreateExtension(_ context.Context, _ component.ExtensionCreateParams, _ configmodels.Extension) (component.ServiceExtension, error) {
+func (b badConfigExtensionFactory) CreateExtension(_ context.Context, _ component.ExtensionCreateParams, _ configmodels.Extension) (component.Extension, error) {
 	return nil, nil
 }

extension/extensionhelper/factory.go

@@ -30,7 +30,7 @@ type FactoryOption func(o *factory)
 type CreateDefaultConfig func() configmodels.Extension
 
 // CreateServiceExtension is the equivalent of component.ExtensionFactory.CreateExtension()
-type CreateServiceExtension func(context.Context, component.ExtensionCreateParams, configmodels.Extension) (component.ServiceExtension, error)
+type CreateServiceExtension func(context.Context, component.ExtensionCreateParams, configmodels.Extension) (component.Extension, error)
 
 type factory struct {
 	cfgType                configmodels.Type
@@ -83,7 +83,7 @@ func (f *factory) CreateDefaultConfig() configmodels.Extension {
 func (f *factory) CreateExtension(
 	ctx context.Context,
 	params component.ExtensionCreateParams,
-	cfg configmodels.Extension) (component.ServiceExtension, error) {
+	cfg configmodels.Extension) (component.Extension, error) {
 	return f.createServiceExtension(ctx, params, cfg)
 }
 

extension/extensionhelper/factory_test.go

@@ -70,7 +70,7 @@ func defaultConfig() configmodels.Extension {
 	return defaultCfg
 }
 
-func createExtension(context.Context, component.ExtensionCreateParams, configmodels.Extension) (component.ServiceExtension, error) {
+func createExtension(context.Context, component.ExtensionCreateParams, configmodels.Extension) (component.Extension, error) {
 	return nopExtensionInstance, nil
 }
 

extension/fluentbitextension/factory.go

@@ -44,7 +44,7 @@ func createDefaultConfig() configmodels.Extension {
 	}
 }
 
-func createExtension(_ context.Context, params component.ExtensionCreateParams, cfg configmodels.Extension) (component.ServiceExtension, error) {
+func createExtension(_ context.Context, params component.ExtensionCreateParams, cfg configmodels.Extension) (component.Extension, error) {
 	config := cfg.(*Config)
 	return newProcessManager(config, params.Logger), nil
 }