com.datadoghq.trace.sampling.AbstractSampler Maven / Gradle / Ivy
package com.datadoghq.trace.sampling;
import com.datadoghq.trace.DDBaseSpan;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.regex.Pattern;
public abstract class AbstractSampler implements Sampler {
/** Sample tags */
protected Map skipTagsPatterns = new HashMap<>();
@Override
public boolean sample(final DDBaseSpan> span) {
//Filter by tag values
for (final Entry entry : skipTagsPatterns.entrySet()) {
final Object value = span.getTags().get(entry.getKey());
if (value != null) {
final String strValue = String.valueOf(value);
final Pattern skipPattern = entry.getValue();
if (skipPattern.matcher(strValue).matches()) {
return false;
}
}
}
return doSample(span);
}
/**
* Pattern based skipping of tag values
*
* @param tag
* @param skipPattern
*/
public void addSkipTagPattern(final String tag, final Pattern skipPattern) {
skipTagsPatterns.put(tag, skipPattern);
}
protected abstract boolean doSample(DDBaseSpan> span);
}
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