refactor: derive operationSpanName directly from attemptSpanName

Author: jinseopkim0

sdk-platform-java/gax-java/gax/src/main/java/com/google/api/gax/tracing/OpenTelemetryTracingTracer.java

@@ -108,7 +108,7 @@ public Scope inScope() {
     this.tracer = tracer;
     this.apiTracerContext = apiTracerContext;
     this.attemptSpanName = attemptSpanName;
-    this.operationSpanName = resolveOperationSpanName(apiTracerContext, attemptSpanName);
+    this.operationSpanName = resolveOperationSpanName(attemptSpanName);
     this.attemptAttributes = new HashMap<>();
     buildAttributes();
     startOperationSpan();
@@ -122,19 +122,8 @@ private void startOperationSpan() {
     this.operationSpan = operationSpanBuilder.startSpan();
   }
 
-  private static String resolveOperationSpanName(
-      ApiTracerContext apiTracerContext, String attemptSpanName) {
-    if (apiTracerContext.transport() == ApiTracerContext.Transport.GRPC
-        && !Strings.isNullOrEmpty(apiTracerContext.fullMethodName())) {
-      return apiTracerContext.fullMethodName();
-    } else if (apiTracerContext.transport() == ApiTracerContext.Transport.HTTP
-        && !Strings.isNullOrEmpty(apiTracerContext.httpMethod())
-        && !Strings.isNullOrEmpty(apiTracerContext.httpPathTemplate())) {
-      return String.format(
-          "%s %s", apiTracerContext.httpMethod(), apiTracerContext.httpPathTemplate());
-    } else if (!Strings.isNullOrEmpty(apiTracerContext.fullMethodName())) {
-      return apiTracerContext.fullMethodName();
-    } else if (!Strings.isNullOrEmpty(attemptSpanName)) {
+  private static String resolveOperationSpanName(String attemptSpanName) {
+    if (!Strings.isNullOrEmpty(attemptSpanName)) {
       if (attemptSpanName.endsWith("/attempt")) {
         String name = attemptSpanName.substring(0, attemptSpanName.length() - "/attempt".length());
         return name.isEmpty() ? "operation" : name;