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/*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package ch.boye.httpclientandroidlib.impl.client;
import java.util.concurrent.atomic.AtomicLong;
/**
* Collection of different counters used to gather metrics for {@link FutureRequestExecutionService}.
*/
public final class FutureRequestExecutionMetrics {
private final AtomicLong activeConnections = new AtomicLong();
private final AtomicLong scheduledConnections = new AtomicLong();
private final DurationCounter successfulConnections = new DurationCounter();
private final DurationCounter failedConnections = new DurationCounter();
private final DurationCounter requests = new DurationCounter();
private final DurationCounter tasks = new DurationCounter();
FutureRequestExecutionMetrics() {
}
AtomicLong getActiveConnections() {
return activeConnections;
}
AtomicLong getScheduledConnections() {
return scheduledConnections;
}
DurationCounter getSuccessfulConnections() {
return successfulConnections;
}
DurationCounter getFailedConnections() {
return failedConnections;
}
DurationCounter getRequests() {
return requests;
}
DurationCounter getTasks() {
return tasks;
}
public long getActiveConnectionCount() {
return activeConnections.get();
}
public long getScheduledConnectionCount() {
return scheduledConnections.get();
}
public long getSuccessfulConnectionCount() {
return successfulConnections.count();
}
public long getSuccessfulConnectionAverageDuration() {
return successfulConnections.averageDuration();
}
public long getFailedConnectionCount() {
return failedConnections.count();
}
public long getFailedConnectionAverageDuration() {
return failedConnections.averageDuration();
}
public long getRequestCount() {
return requests.count();
}
public long getRequestAverageDuration() {
return requests.averageDuration();
}
public long getTaskCount() {
return tasks.count();
}
public long getTaskAverageDuration() {
return tasks.averageDuration();
}
@Override
public String toString() {
final StringBuilder builder = new StringBuilder();
builder.append("[activeConnections=").append(activeConnections)
.append(", scheduledConnections=").append(scheduledConnections)
.append(", successfulConnections=").append(successfulConnections)
.append(", failedConnections=").append(failedConnections)
.append(", requests=").append(requests)
.append(", tasks=").append(tasks)
.append("]");
return builder.toString();
}
/**
* A counter that can measure duration and number of events.
*/
static class DurationCounter {
private final AtomicLong count = new AtomicLong(0);
private final AtomicLong cumulativeDuration = new AtomicLong(0);
public void increment(final long startTime) {
count.incrementAndGet();
cumulativeDuration.addAndGet(System.currentTimeMillis() - startTime);
}
public long count() {
return count.get();
}
public long averageDuration() {
final long counter = count.get();
return counter > 0 ? cumulativeDuration.get() / counter : 0;
}
@Override
public String toString() {
final StringBuilder builder = new StringBuilder();
builder.append("[count=").append(count())
.append(", averageDuration=").append(averageDuration())
.append("]");
return builder.toString();
}
}
}
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