[otelcol] remove deprecated interface ConfmapProvider (#10934)

Signed-off-by: Alex Boten <223565+codeboten@users.noreply.github.com>

.chloggen/codeboten_remove-deprecated.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: breaking
+
+# The name of the component, or a single word describing the area of concern, (e.g. otlpreceiver)
+component: otelcol
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Remove deprecated `ConfmapProvider` interface.
+
+# One or more tracking issues or pull requests related to the change
+issues: [10934]
+
+# (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: []

otelcol/configprovider.go

@@ -44,22 +44,6 @@ type ConfigProvider interface {
 	Shutdown(ctx context.Context) error
 }
 
-// ConfmapProvider is an optional interface to be implemented by ConfigProviders
-// to provide confmap.Conf objects representing a marshaled version of the
-// Collector's configuration.
-//
-// The purpose of this interface is that otelcol.ConfigProvider structs do not
-// necessarily need to use confmap.Conf as their underlying config structure.
-//
-// Deprecated: [v0.105.0] This interface is deprecated. otelcol.Collector will now obtain
-// a confmap.Conf object from the unmarshaled config itself.
-type ConfmapProvider interface {
-	// GetConfmap resolves the Collector's configuration and provides it as a confmap.Conf object.
-	//
-	// Should never be called concurrently with itself or any ConfigProvider method.
-	GetConfmap(ctx context.Context) (*confmap.Conf, error)
-}
-
 type configProvider struct {
 	mapResolver *confmap.Resolver
 }
@@ -117,15 +101,3 @@ func (cm *configProvider) Watch() <-chan error {
 func (cm *configProvider) Shutdown(ctx context.Context) error {
 	return cm.mapResolver.Shutdown(ctx)
 }
-
-// Deprecated: [v0.105.0] Call `(*confmap.Conf).Marshal(*otelcol.Config)` to get
-// the Collector's configuration instead.
-func (cm *configProvider) GetConfmap(ctx context.Context) (*confmap.Conf, error) {
-	conf, err := cm.mapResolver.Resolve(ctx)
-
-	if err != nil {
-		return nil, fmt.Errorf("cannot resolve the configuration: %w", err)
-	}
-
-	return conf, nil
-}

otelcol/configprovider_test.go

@@ -106,34 +106,3 @@ func TestConfigProviderFile(t *testing.T) {
 
 	assert.EqualValues(t, configNop, cfg)
 }
-
-func TestGetConfmap(t *testing.T) {
-	uriLocation := "file:" + filepath.Join("testdata", "otelcol-nop.yaml")
-	fileProvider := newFakeProvider("file", func(_ context.Context, _ string, _ confmap.WatcherFunc) (*confmap.Retrieved, error) {
-		return confmap.NewRetrieved(newConfFromFile(t, uriLocation[5:]))
-	})
-	set := ConfigProviderSettings{
-		ResolverSettings: confmap.ResolverSettings{
-			URIs:              []string{uriLocation},
-			ProviderFactories: []confmap.ProviderFactory{fileProvider},
-		},
-	}
-
-	configBytes, err := os.ReadFile(filepath.Join("testdata", "otelcol-nop.yaml"))
-	require.NoError(t, err)
-
-	yamlMap := map[string]any{}
-	err = yaml.Unmarshal(configBytes, yamlMap)
-	require.NoError(t, err)
-
-	cp, err := NewConfigProvider(set)
-	require.NoError(t, err)
-
-	cmp, ok := cp.(ConfmapProvider)
-	require.True(t, ok)
-
-	cmap, err := cmp.GetConfmap(context.Background())
-	require.NoError(t, err)
-
-	assert.EqualValues(t, yamlMap, cmap.ToStringMap())
-}