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package org.glassfish.jersey.server.internal.monitoring;
import java.util.Collections;
import java.util.Comparator;
import java.util.Map;
import java.util.SortedMap;
import org.glassfish.jersey.server.model.Resource;
import org.glassfish.jersey.server.model.ResourceMethod;
import org.glassfish.jersey.server.model.ResourceModel;
import org.glassfish.jersey.server.monitoring.ExceptionMapperStatistics;
import org.glassfish.jersey.server.monitoring.ExecutionStatistics;
import org.glassfish.jersey.server.monitoring.MonitoringStatistics;
import org.glassfish.jersey.server.monitoring.ResourceStatistics;
import org.glassfish.jersey.server.monitoring.ResponseStatistics;
import jersey.repackaged.com.google.common.base.Function;
import jersey.repackaged.com.google.common.collect.Maps;
/**
* Monitoring statistics implementation.
*
* @author Miroslav Fuksa (miroslav.fuksa at oracle.com)
*/
final class MonitoringStatisticsImpl implements MonitoringStatistics {
/**
* Builder of monitoring statistics.
*/
static class Builder {
private static final Function<ResourceStatisticsImpl.Builder, ResourceStatistics> BUILDING_FUNCTION =
new Function<ResourceStatisticsImpl.Builder, ResourceStatistics>() {
@Override
public ResourceStatistics apply(final ResourceStatisticsImpl.Builder builder) {
return builder.build();
}
};
private final ResponseStatisticsImpl.Builder responseStatisticsBuilder;
private final ExceptionMapperStatisticsImpl.Builder exceptionMapperStatisticsBuilder;
private final ResourceMethodStatisticsImpl.Factory methodFactory = new ResourceMethodStatisticsImpl.Factory();
private final SortedMap<String, ResourceStatisticsImpl.Builder> uriStatistics = Maps.newTreeMap();
private final SortedMap<Class<?>, ResourceStatisticsImpl.Builder> resourceClassStatistics
= Maps.newTreeMap(new Comparator<Class<?>>() {
@Override
public int compare(final Class<?> o1, final Class<?> o2) {
return o1.getName().compareTo(o2.getName());
}
});
private ExecutionStatisticsImpl.Builder requestStatisticsBuilder;
/**
* Create a new builder.
*/
Builder() {
this.responseStatisticsBuilder = new ResponseStatisticsImpl.Builder();
this.exceptionMapperStatisticsBuilder = new ExceptionMapperStatisticsImpl.Builder();
}
/**
* Create a new builder and initialize it from resource model.
* @param resourceModel resource model.
*/
Builder(final ResourceModel resourceModel) {
this();
for (final Resource resource : resourceModel.getRootResources()) {
processResource(resource, "");
for (final Resource child : resource.getChildResources()) {
processResource(child, "/" + resource.getPath());
}
}
}
private void processResource(final Resource resource, final String pathPrefix) {
uriStatistics.put(pathPrefix + "/" + resource.getPath(), new ResourceStatisticsImpl.Builder(resource, methodFactory));
for (final ResourceMethod resourceMethod : resource.getResourceMethods()) {
getOrCreateResourceBuilder(resourceMethod).addMethod(resourceMethod);
}
}
private ResourceStatisticsImpl.Builder getOrCreateResourceBuilder(final ResourceMethod resourceMethod) {
final Class<?> clazz = resourceMethod.getInvocable().getHandler().getHandlerClass();
ResourceStatisticsImpl.Builder builder = resourceClassStatistics.get(clazz);
if (builder == null) {
builder = new ResourceStatisticsImpl.Builder(methodFactory);
resourceClassStatistics.put(clazz, builder);
}
return builder;
}
/**
* Get the exception mapper statistics builder.
* @return Builder of internal exception mapper statistics.
*/
ExceptionMapperStatisticsImpl.Builder getExceptionMapperStatisticsBuilder() {
return exceptionMapperStatisticsBuilder;
}
/**
* Add global request execution.
*
* @param startTime time of the execution.
* @param duration duration of the execution.
*/
void addRequestExecution(final long startTime, final long duration) {
if (requestStatisticsBuilder == null) {
requestStatisticsBuilder = new ExecutionStatisticsImpl.Builder();
}
requestStatisticsBuilder.addExecution(startTime, duration);
}
/**
* Add execution of a resource method.
*
* @param uri String uri which was executed.
* @param resourceMethod Resource method.
* @param methodTime Time spent on execution of resource method itself (Unix timestamp format).
* @param methodDuration Time of execution of the resource method.
* @param requestTime Time of whole request processing (from receiving
* the request until writing the response). (Unix timestamp format)
* @param requestDuration Time when the request matching to the executed resource method has been received
* by Jersey.
*/
void addExecution(final String uri, final ResourceMethod resourceMethod,
final long methodTime, final long methodDuration,
final long requestTime, final long requestDuration) {
// Uri resource stats.
ResourceStatisticsImpl.Builder uriStatsBuilder = uriStatistics.get(uri);
if (uriStatsBuilder == null) {
uriStatsBuilder = new ResourceStatisticsImpl.Builder(resourceMethod.getParent(), methodFactory);
uriStatistics.put(uri, uriStatsBuilder);
}
uriStatsBuilder.addExecution(resourceMethod, methodTime, methodDuration, requestTime, requestDuration);
// Class resource stats.
final ResourceStatisticsImpl.Builder classStatsBuilder = getOrCreateResourceBuilder(resourceMethod);
classStatsBuilder.addExecution(resourceMethod, methodTime, methodDuration, requestTime, requestDuration);
// Resource method stats.
methodFactory.getOrCreate(resourceMethod)
.addResourceMethodExecution(methodTime, methodDuration, requestTime, requestDuration);
}
/**
* Add a response status code produces by Jersey.
* @param responseCode Response status code.
*/
void addResponseCode(final int responseCode) {
responseStatisticsBuilder.addResponseCode(responseCode);
}
/**
* Build a new instance of monitoring statistics.
* @return New instance of {@code MonitoringStatisticsImpl}.
*/
MonitoringStatisticsImpl build() {
final Map<String, ResourceStatistics> uriStats = Collections.unmodifiableMap(
Maps.transformValues(uriStatistics, BUILDING_FUNCTION));
final Map<Class<?>, ResourceStatistics> classStats = Collections.unmodifiableMap(
Maps.transformValues(resourceClassStatistics, BUILDING_FUNCTION));
final ExecutionStatistics requestStats = requestStatisticsBuilder == null ?
ExecutionStatisticsImpl.EMPTY : requestStatisticsBuilder.build();
return new MonitoringStatisticsImpl(
uriStats, classStats, requestStats,
responseStatisticsBuilder.build(),
exceptionMapperStatisticsBuilder.build());
}
}
private final ExecutionStatistics requestStatistics;
private final ResponseStatistics responseStatistics;
private final ExceptionMapperStatistics exceptionMapperStatistics;
private final Map<String, ResourceStatistics> uriStatistics;
private final Map<Class<?>, ResourceStatistics> resourceClassStatistics;
private MonitoringStatisticsImpl(final Map<String, ResourceStatistics> uriStatistics,
final Map<Class<?>, ResourceStatistics> resourceClassStatistics,
final ExecutionStatistics requestStatistics,
final ResponseStatistics responseStatistics,
final ExceptionMapperStatistics exceptionMapperStatistics) {
this.uriStatistics = uriStatistics;
this.resourceClassStatistics = resourceClassStatistics;
this.requestStatistics = requestStatistics;
this.responseStatistics = responseStatistics;
this.exceptionMapperStatistics = exceptionMapperStatistics;
}
@Override
public ExecutionStatistics getRequestStatistics() {
return requestStatistics;
}
@Override
public ResponseStatistics getResponseStatistics() {
return responseStatistics;
}
@Override
public Map<String, ResourceStatistics> getUriStatistics() {
return uriStatistics;
}
@Override
public Map<Class<?>, ResourceStatistics> getResourceClassStatistics() {
return resourceClassStatistics;
}
@Override
public ExceptionMapperStatistics getExceptionMapperStatistics() {
return exceptionMapperStatistics;
}
@Override
public MonitoringStatistics snapshot() {
// snapshot functionality not yet implemented
return this;
}
}