package org.skywalking.apm.trace.tag;
import org.skywalking.apm.trace.Span;
/**
* Do the same thing as {@link StringTag}, just with a {@link Boolean} value.
* <p>
* Created by wusheng on 2017/2/17.
*/
public class BooleanTag extends AbstractTag<Boolean> {
private boolean defaultValue;
public BooleanTag(String key, boolean defaultValue) {
super(key);
this.defaultValue = defaultValue;
}
@Override
public void set(Span span, Boolean tagValue) {
span.setTag(key, tagValue);
}
/**
* Get a tag value, type of {@link Boolean}. After akka-message/serialize, all tags values are type of {@link
* String}, convert to {@link Boolean}, if necessary.
*
* @param span
* @return tag value
*/
@Override
public Boolean get(Span span) {
Boolean tagValue = span.getBoolTag(super.key);
if (tagValue == null) {
return defaultValue;
} else {
return tagValue;
}
}
}