rename parent context id to context id

Author: zhongkechen

sdk/src/main/java/software/amazon/lambda/durable/BaseContext.java

@@ -11,7 +11,7 @@ public abstract class BaseContext {
     private final DurableConfig durableConfig;
     private final Context lambdaContext;
     private final ExecutionContext executionContext;
-    private final String parentContextId;
+    private final String contextId;
     private boolean isReplaying;
 
     /** Shared initialization — sets all fields but performs no thread registration. */
@@ -20,7 +20,7 @@ protected BaseContext(
         this.executionManager = executionManager;
         this.durableConfig = durableConfig;
         this.lambdaContext = lambdaContext;
-        this.parentContextId = contextId;
+        this.contextId = contextId;
         this.executionContext = new ExecutionContext(executionManager.getDurableExecutionArn());
         this.isReplaying = executionManager.hasOperationsForContext(contextId);
     }
@@ -57,8 +57,8 @@ public DurableConfig getDurableConfig() {
     // ============= internal utilities ===============
 
     /** Gets the context ID for this context. Null for root context, set for child contexts. */
-    public String getParentContextId() {
-        return parentContextId;
+    public String getContextId() {
+        return contextId;
     }
 
     public ExecutionManager getExecutionManager() {

sdk/src/main/java/software/amazon/lambda/durable/DurableContext.java

@@ -319,6 +319,6 @@ public DurableLogger getLogger() {
      */
     private String nextOperationId() {
         var counter = String.valueOf(operationCounter.incrementAndGet());
-        return getParentContextId() != null ? getParentContextId() + "-" + counter : counter;
+        return getContextId() != null ? getContextId() + "-" + counter : counter;
     }
 }

sdk/src/main/java/software/amazon/lambda/durable/operation/BaseDurableOperation.java

@@ -252,7 +252,7 @@ protected CompletableFuture<Void> sendOperationUpdateAsync(OperationUpdate.Build
         return executionManager.sendOperationUpdate(builder.id(operationId)
                 .name(name)
                 .type(operationType)
-                .parentId(durableContext.getParentContextId())
+                .parentId(durableContext.getContextId())
                 .build());
     }