Add @opensearch.internal annotation

Signed-off-by: suranjay <surajkumar.tu@gmail.com>

libs/telemetry/src/main/java/org/opensearch/telemetry/Telemetry.java

@@ -13,6 +13,8 @@
 
 /**
  * Interface defining telemetry
+ *
+ * @opensearch.internal
  */
 public interface Telemetry {
 

libs/telemetry/src/main/java/org/opensearch/telemetry/tracing/AbstractSpan.java

@@ -10,6 +10,8 @@
 
 /**
  * Base span
+ *
+ * @opensearch.internal
  */
 public abstract class AbstractSpan implements Span {
 

libs/telemetry/src/main/java/org/opensearch/telemetry/tracing/DefaultSpanScope.java

@@ -12,8 +12,10 @@
 
 /**
  * Default implementation of Scope
+ *
+ * @opensearch.internal
  */
-public class DefaultSpanScope implements SpanScope {
+final class DefaultSpanScope implements SpanScope {
 
     private final Span span;
 

libs/telemetry/src/main/java/org/opensearch/telemetry/tracing/DefaultTracer.java

@@ -16,9 +16,9 @@
  * The default tracer implementation. It handles tracing context propagation between spans by maintaining
  * current active span in its storage
  *
- *
+ *  @opensearch.internal
  */
-public class DefaultTracer implements Tracer {
+class DefaultTracer implements Tracer {
     static final String THREAD_NAME = "th_name";
 
     private final TracingTelemetry tracingTelemetry;

libs/telemetry/src/main/java/org/opensearch/telemetry/tracing/Span.java

@@ -11,7 +11,9 @@
 /**
  * An interface that represents a tracing span.
  * Spans are created by the Tracer.startSpan method.
- * Span must be ended by calling Tracer.endSpan which internally calls Span's endSpan.
+ * Span must be ended by calling SpanScope.close which internally calls Span's endSpan.
+ *
+ * @opensearch.internal
  */
 public interface Span {
 

libs/telemetry/src/main/java/org/opensearch/telemetry/tracing/SpanReference.java

@@ -10,8 +10,10 @@
 
 /**
  * Wrapper class to hold reference of Span
+ *
+ * @opensearch.internal
  */
-public class SpanReference {
+final class SpanReference {
 
     private Span span;
 

libs/telemetry/src/main/java/org/opensearch/telemetry/tracing/TracerContextStorage.java

@@ -12,6 +12,8 @@
  * Storage interface used for storing tracing context
  * @param <K> key type
  * @param <V> value type
+ *
+ * @opensearch.internal
  */
 public interface TracerContextStorage<K, V> {
     /**

libs/telemetry/src/main/java/org/opensearch/telemetry/tracing/TracingContextPropagator.java

@@ -13,6 +13,8 @@
 
 /**
  * Interface defining the tracing related context propagation
+ *
+ * @opensearch.internal
  */
 public interface TracingContextPropagator {
 

libs/telemetry/src/main/java/org/opensearch/telemetry/tracing/TracingTelemetry.java

@@ -12,6 +12,8 @@
 
 /**
  * Interface for tracing telemetry providers
+ *
+ * @opensearch.internal
  */
 public interface TracingTelemetry extends Closeable {
 

libs/telemetry/src/main/java/org/opensearch/telemetry/tracing/noop/NoopSpanScope.java

@@ -12,6 +12,8 @@
 
 /**
  * No-op implementation of SpanScope
+ *
+ * @opensearch.internal
  */
 public final class NoopSpanScope implements SpanScope {
 

libs/telemetry/src/main/java/org/opensearch/telemetry/tracing/noop/NoopTracer.java

@@ -13,6 +13,8 @@
 
 /**
  * No-op implementation of Tracer
+ *
+ * @opensearch.internal
  */
 public class NoopTracer implements Tracer {
 

server/src/main/java/org/opensearch/telemetry/tracing/NoopTracerFactory.java

@@ -14,6 +14,8 @@
 
 /**
  * No-op implementation of TracerFactory
+ *
+ * @opensearch.internal
  */
 public class NoopTracerFactory extends TracerFactory {
     public NoopTracerFactory() {

server/src/main/java/org/opensearch/telemetry/tracing/ThreadContextBasedTracerContextStorage.java

@@ -18,6 +18,8 @@
 
 /**
  * Core's ThreadContext based TracerContextStorage implementation
+ *
+ * @opensearch.internal
  */
 public class ThreadContextBasedTracerContextStorage implements TracerContextStorage<String, Span>, ThreadContextStatePropagator {
 

server/src/main/java/org/opensearch/telemetry/tracing/WrappedTracer.java

@@ -15,8 +15,10 @@
 
 /**
  * Wrapper implementation of Tracer. This delegates call to right tracer based on the tracer settings
+ *
+ * @opensearch.internal
  */
-public class WrappedTracer implements Tracer {
+final class WrappedTracer implements Tracer {
 
     private final Tracer defaultTracer;
     private final TelemetrySettings telemetrySettings;