OAL Filter expressions link

[BritneyStars]

The expressions support linking by and, or and (...). The OPs support ==, !=, >, <, >=, <=, in [...] ,like %..., like ...% , like %...% , contain and not contain, with type detection based on field type. In the event of incompatibility, compile or code generation errors may be triggered.
if the filter condition is or/and relation,the expressions should how to link . for example ,I add endpoint_http_cpm=from(Endpoint.*).filter(tags contain "http.method:GET" or tags contain "http.method:POST" ) . it is error . What should be the correct expression

[wu-sheng]

You could use filter as chain mode to support AND.
And contain accept an array, which means OR.

[BritneyStars]

I debug the codes and found the span type is Local where the custom tags is located is ,So it does not enter the setPublicAttrs method in skywalking/oap-server/analyzer/agent-analyzer/src/main/java/org/apache/skywalking/oap/server/analyzer/provider/trace/parser/listener/MultiScopesAnalysisListener.java . it only enter parseLocal method and not record the Tags.

The method notifyLocalListener(spanObject, segmentObject) does not record the customer tags

[wu-sheng]

Oh, if you mean local span, no, it wouldn't be there. Because only entry span generates the source of service, which represents the traffic of service. And exit span generates tags for relationship(such as service calls service).

[wu-sheng]

Could you share what is your use case? If it is local span related, I would like to recommend logic span concept.

[BritneyStars]

I want to customize the business logic response status to some schedule task . For example,

@Scheduled(cron="0 0/10 * * * ?")
public void fetchTaskSchedule(){
   .........
  Boolean flag=method();
  if(flag){
        ActiveSpan.tag("batch.resultCode","1");
	ActiveSpan.tag("batch.resultMsg","获取xxx成功");
  }else{
        ActiveSpan.tag("batch.resultCode","0");
	ActiveSpan.tag("batch.resultMsg","获取xxx失败");
  }
}

I want to calculate the count which batch.resultCode=0 or 1 by OAL . But because this is local span ,so it can not use the tag filter function .

[wu-sheng]

Then 2 things you could do.

1. You could contribute a pull request, make endpoint(source) generated by logic span including all other tags.
2. Use manual API to tag this local span as logic span in your codes.