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package org.glassfish.jersey.server.monitoring;
import java.util.Map;
/**
* Monitoring statistics of responses produced by application.
* <p/>
* Statistics retrieved from Jersey runtime might be mutable and thanks to it might provide inconsistent data
* as not all statistics are updated in the same time. To retrieve the immutable and consistent
* statistics data the method {@link #snapshot()} should be used.
* <p/>
*
* @author Miroslav Fuksa
* @see MonitoringStatistics See monitoring statistics for general details about statistics.
*/
public interface ResponseStatistics {
/**
* Returns the response code of a last response written by the application.
*
* @return Last response status code.
*/
public Integer getLastResponseCode();
/**
* Returns statistics of response codes produces by the application. Keys of a returned
* map are response status codes and values is the the count of responses with these
* status count. Values are measured since start of the application.
*
* @return Map with status codes keys and count as values.
*/
public Map<Integer, Long> getResponseCodes();
/**
* Get the immutable and consistent snapshot of the monitoring statistics. Working with snapshots might
* have negative performance impact as snapshot must be created but ensures consistency of data over time.
* However, the usage of snapshot is encouraged to avoid working with inconsistent data. Not all statistics
* must be updated in the same time on mutable version of statistics.
*
* @return Snapshot of response statistics.
* @deprecated implementing class is immutable hence snapshot creation is not needed anymore
*/
@Deprecated
public ResponseStatistics snapshot();
}