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package org.glassfish.jersey.server.internal.monitoring;
import java.util.Collections;
import java.util.Map;
import org.glassfish.jersey.server.model.Resource;
import org.glassfish.jersey.server.model.ResourceMethod;
import org.glassfish.jersey.server.monitoring.ExecutionStatistics;
import org.glassfish.jersey.server.monitoring.ResourceMethodStatistics;
import org.glassfish.jersey.server.monitoring.ResourceStatistics;
import jersey.repackaged.com.google.common.collect.Maps;
/**
* Resource statistics implementation.
*
* @author Miroslav Fuksa (miroslav.fuksa at oracle.com)
*/
class ResourceStatisticsImpl implements ResourceStatistics {
/**
* Builder of resource statistics instances.
*/
static class Builder {
private final ExecutionStatisticsImpl.Builder resourceExecutionStatisticsBuilder;
private final ExecutionStatisticsImpl.Builder requestExecutionStatisticsBuilder;
private final Map methodsBuilders = Maps.newHashMap();
private final Map stringToMethodsBuilders = Maps.newHashMap();
/**
* Create a new builder.
*
* @param resource Resource for which the instance is created.
*/
Builder(Resource resource) {
this();
for (ResourceMethod method : resource.getResourceMethods()) {
getOrCreate(method);
}
}
/**
* Create a new builder.
*/
Builder() {
this.resourceExecutionStatisticsBuilder = new ExecutionStatisticsImpl.Builder();
this.requestExecutionStatisticsBuilder = new ExecutionStatisticsImpl.Builder();
}
/**
* Build a new instance of {@link ResourceStatisticsImpl}.
* @return New instance of resource statistics.
*/
ResourceStatisticsImpl build() {
final Map resourceMethods = Maps.newHashMap();
for (Map.Entry methodEntry : methodsBuilders.entrySet()) {
resourceMethods.put(methodEntry.getKey(), methodEntry.getValue().build());
}
return new ResourceStatisticsImpl(
Collections.unmodifiableMap(resourceMethods),
resourceExecutionStatisticsBuilder.build(),
requestExecutionStatisticsBuilder.build());
}
/**
* Add execution of a resource method in the resource.
*
* @param resourceMethod Resource method executed.
* @param methodStartTime Time of execution of the resource method.
* @param methodDuration Time spent on execution of resource method itself.
* @param requestStartTime Time when the request matching to the executed resource method has been received
* by Jersey.
* @param requestDuration Time of whole request processing (from receiving the request until writing the response).
*/
void addExecution(ResourceMethod resourceMethod, long methodStartTime, long methodDuration,
long requestStartTime, long requestDuration) {
resourceExecutionStatisticsBuilder.addExecution(methodStartTime, methodDuration);
requestExecutionStatisticsBuilder.addExecution(requestStartTime, requestDuration);
final ResourceMethodStatisticsImpl.Builder builder = getOrCreate(resourceMethod);
builder.addResourceMethodExecution(methodStartTime, methodDuration, requestStartTime, requestDuration);
}
/**
* Add a resource method to the statistics.
*
* @param resourceMethod Resource method.
*/
void addMethod(ResourceMethod resourceMethod) {
getOrCreate(resourceMethod);
}
private ResourceMethodStatisticsImpl.Builder getOrCreate(ResourceMethod resourceMethod) {
final String methodUniqueId = MonitoringUtils.getMethodUniqueId(resourceMethod);
ResourceMethodStatisticsImpl.Builder methodBuilder = stringToMethodsBuilders.get(methodUniqueId);
if (methodBuilder == null) {
methodBuilder = new ResourceMethodStatisticsImpl.Builder(resourceMethod);
methodsBuilders.put(resourceMethod, methodBuilder);
stringToMethodsBuilders.put(methodUniqueId, methodBuilder);
}
return methodBuilder;
}
}
private final Map resourceMethods;
private final ExecutionStatistics resourceExecutionStatistics;
private final ExecutionStatistics requestExecutionStatistics;
private ResourceStatisticsImpl(Map resourceMethods,
ExecutionStatistics resourceExecutionStatistics, ExecutionStatistics requestExecutionStatistics) {
this.resourceMethods = resourceMethods;
this.resourceExecutionStatistics = resourceExecutionStatistics;
this.requestExecutionStatistics = requestExecutionStatistics;
}
@Override
public ExecutionStatistics getResourceMethodExecutionStatistics() {
return resourceExecutionStatistics;
}
@Override
public ExecutionStatistics getRequestExecutionStatistics() {
return requestExecutionStatistics;
}
@Override
public Map getResourceMethodStatistics() {
return resourceMethods;
}
@Override
public ResourceStatistics snapshot() {
// snapshot functionality not yet implemented
return this;
}
}