kezhenxu94 commented on a change in pull request #4327: Tag annotation supports
returned expression
URL: https://github.com/apache/skywalking/pull/4327#discussion_r377997300
##########
File path:
apm-sniffer/apm-toolkit-activation/apm-toolkit-trace-activation/src/main/java/org/apache/skywalking/apm/toolkit/activation/trace/TraceAnnotationMethodInterceptor.java
##########
@@ -56,24 +56,41 @@ public void beforeMethod(EnhancedInstance objInst, Method
method, Object[] allAr
final Tags tags = method.getAnnotation(Tags.class);
if (tags != null && tags.value().length > 0) {
for (final Tag tag : tags.value()) {
- tagSpan(localSpan, tag, context);
+ if (!TagUtil.isReturnTag(tag.value())) {
+ TagUtil.tagParamsSpan(localSpan, context, tag);
+ }
}
}
-
final Tag tag = method.getAnnotation(Tag.class);
- if (tag != null) {
- tagSpan(localSpan, tag, context);
+ if (tag != null && !TagUtil.isReturnTag(tag.value())) {
+ TagUtil.tagParamsSpan(localSpan, context, tag);
}
}
- private void tagSpan(final AbstractSpan span, final Tag tag, final
Map<String, Object> context) {
- new StringTag(tag.key()).set(span,
CustomizeExpression.parseExpression(tag.value(), context));
- }
-
@Override
public Object afterMethod(EnhancedInstance objInst, Method method,
Object[] allArguments, Class<?>[] argumentsTypes,
Object ret) throws Throwable {
- ContextManager.stopSpan();
+ try {
+ if (ret == null) {
+ return ret;
+ }
+ final AbstractSpan localSpan = ContextManager.activeSpan();
+ final Map<String, Object> context =
CustomizeExpression.evaluationReturnContext(ret);
+ final Tags tags = method.getAnnotation(Tags.class);
+ if (tags != null && tags.value().length > 0) {
+ for (final Tag tag : tags.value()) {
+ if (TagUtil.isReturnTag(tag.value())) {
+ TagUtil.tagReturnSpanSpan(localSpan, context, tag);
+ }
+ }
+ }
+ final Tag tag = method.getAnnotation(Tag.class);
+ if (tag != null && TagUtil.isReturnTag(tag.value())) {
+ TagUtil.tagReturnSpanSpan(localSpan, context, tag);
+ }
+ } finally {
+ ContextManager.stopSpan();
Review comment:
> Same here.
There is no conditional creation of span in the `#beforeMethod`, so it's
right here
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