Deprecate component.Host.GetExporters (#7390)

Co-authored-by: Dmitrii Anoshin <anoshindx@gmail.com>

.chloggen/deprecate-get-exporters.yaml

@@ -0,0 +1,16 @@
+# 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: component
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Deprecate Host.GetExporters function
+
+# One or more tracking issues or pull requests related to the change
+issues: [7370]
+
+# (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:

component/componenttest/nop_host_test.go

@@ -19,7 +19,7 @@ func TestNewNopHost(t *testing.T) {
 	require.IsType(t, &nopHost{}, nh)
 
 	nh.ReportFatalError(errors.New("TestError"))
-	assert.Nil(t, nh.GetExporters())
+	assert.Nil(t, nh.GetExporters()) // nolint: staticcheck
 	assert.Nil(t, nh.GetExtensions())
 	assert.Nil(t, nh.GetFactory(component.KindReceiver, "test"))
 }

component/host.go

@@ -47,5 +47,12 @@ type Host interface {
 	//
 	// GetExporters can be called by the component anytime after Component.Start() begins and
 	// until Component.Shutdown() ends.
+	//
+	// Deprecated: [0.79.0] This function will be removed in the future.
+	// Several components in the contrib repository use this function so it cannot be removed
+	// before those cases are removed. In most cases, use of this function can be replaced by a
+	// connector. See https://github.com/open-telemetry/opentelemetry-collector/issues/7370 and
+	// https://github.com/open-telemetry/opentelemetry-collector/pull/7390#issuecomment-1483710184
+	// for additional information.
 	GetExporters() map[DataType]map[ID]Component
 }

service/host.go

@@ -57,6 +57,12 @@ func (host *serviceHost) GetExtensions() map[component.ID]component.Component {
 	return host.serviceExtensions.GetExtensions()
 }
 
+// Deprecated: [0.79.0] This function will be removed in the future.
+// Several components in the contrib repository use this function so it cannot be removed
+// before those cases are removed. In most cases, use of this function can be replaced by a
+// connector. See https://github.com/open-telemetry/opentelemetry-collector/issues/7370 and
+// https://github.com/open-telemetry/opentelemetry-collector/pull/7390#issuecomment-1483710184
+// for additional information.
 func (host *serviceHost) GetExporters() map[component.DataType]map[component.ID]component.Component {
 	return host.pipelines.GetExporters()
 }

service/internal/graph/graph.go

@@ -310,6 +310,12 @@ func (g *Graph) ShutdownAll(ctx context.Context) error {
 	return errs
 }
 
+// Deprecated: [0.79.0] This function will be removed in the future.
+// Several components in the contrib repository use this function so it cannot be removed
+// before those cases are removed. In most cases, use of this function can be replaced by a
+// connector. See https://github.com/open-telemetry/opentelemetry-collector/issues/7370 and
+// https://github.com/open-telemetry/opentelemetry-collector/pull/7390#issuecomment-1483710184
+// for additional information.
 func (g *Graph) GetExporters() map[component.DataType]map[component.ID]component.Component {
 	exportersMap := make(map[component.DataType]map[component.ID]component.Component)
 	exportersMap[component.DataTypeTraces] = make(map[component.ID]component.Component)