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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.
*/
package org.apache.dubbo.rpc;
import org.apache.dubbo.common.URL;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicLong;
/**
* URL statistics. (API, Cached, ThreadSafe)
*
* @see org.apache.dubbo.rpc.filter.ActiveLimitFilter
* @see org.apache.dubbo.rpc.filter.ExecuteLimitFilter
* @see org.apache.dubbo.rpc.cluster.loadbalance.LeastActiveLoadBalance
*/
public class RpcStatus {
private static final ConcurrentMap SERVICE_STATISTICS = new ConcurrentHashMap();
private static final ConcurrentMap> METHOD_STATISTICS =
new ConcurrentHashMap>();
private final ConcurrentMap values = new ConcurrentHashMap();
private final AtomicInteger active = new AtomicInteger();
private final AtomicLong total = new AtomicLong();
private final AtomicInteger failed = new AtomicInteger();
private final AtomicLong totalElapsed = new AtomicLong();
private final AtomicLong failedElapsed = new AtomicLong();
private final AtomicLong maxElapsed = new AtomicLong();
private final AtomicLong failedMaxElapsed = new AtomicLong();
private final AtomicLong succeededMaxElapsed = new AtomicLong();
private RpcStatus() {
}
/**
* @param url
* @return status
*/
public static RpcStatus getStatus(URL url) {
String uri = url.toIdentityString();
return SERVICE_STATISTICS.computeIfAbsent(uri, key -> new RpcStatus());
}
/**
* @param url
*/
public static void removeStatus(URL url) {
String uri = url.toIdentityString();
SERVICE_STATISTICS.remove(uri);
}
/**
* @param url
* @param methodName
* @return status
*/
public static RpcStatus getStatus(URL url, String methodName) {
String uri = url.toIdentityString();
ConcurrentMap map = METHOD_STATISTICS.computeIfAbsent(uri, k -> new ConcurrentHashMap<>());
return map.computeIfAbsent(methodName, k -> new RpcStatus());
}
/**
* @param url
*/
public static void removeStatus(URL url, String methodName) {
String uri = url.toIdentityString();
ConcurrentMap map = METHOD_STATISTICS.get(uri);
if (map != null) {
map.remove(methodName);
}
}
public static void beginCount(URL url, String methodName) {
beginCount(url, methodName, Integer.MAX_VALUE);
}
/**
* @param url
*/
public static boolean beginCount(URL url, String methodName, int max) {
max = (max <= 0) ? Integer.MAX_VALUE : max;
RpcStatus appStatus = getStatus(url);
RpcStatus methodStatus = getStatus(url, methodName);
if (methodStatus.active.get() == Integer.MAX_VALUE) {
return false;
}
for (int i; ; ) {
i = methodStatus.active.get();
if (i == Integer.MAX_VALUE || i + 1 > max) {
return false;
}
if (methodStatus.active.compareAndSet(i, i + 1)) {
break;
}
}
appStatus.active.incrementAndGet();
return true;
}
/**
* @param url
* @param elapsed
* @param succeeded
*/
public static void endCount(URL url, String methodName, long elapsed, boolean succeeded) {
endCount(getStatus(url), elapsed, succeeded);
endCount(getStatus(url, methodName), elapsed, succeeded);
}
private static void endCount(RpcStatus status, long elapsed, boolean succeeded) {
status.active.decrementAndGet();
status.total.incrementAndGet();
status.totalElapsed.addAndGet(elapsed);
if (status.maxElapsed.get() < elapsed) {
status.maxElapsed.set(elapsed);
}
if (succeeded) {
if (status.succeededMaxElapsed.get() < elapsed) {
status.succeededMaxElapsed.set(elapsed);
}
} else {
status.failed.incrementAndGet();
status.failedElapsed.addAndGet(elapsed);
if (status.failedMaxElapsed.get() < elapsed) {
status.failedMaxElapsed.set(elapsed);
}
}
}
/**
* set value.
*
* @param key
* @param value
*/
public void set(String key, Object value) {
values.put(key, value);
}
/**
* get value.
*
* @param key
* @return value
*/
public Object get(String key) {
return values.get(key);
}
/**
* get active.
*
* @return active
*/
public int getActive() {
return active.get();
}
/**
* get total.
*
* @return total
*/
public long getTotal() {
return total.longValue();
}
/**
* get total elapsed.
*
* @return total elapsed
*/
public long getTotalElapsed() {
return totalElapsed.get();
}
/**
* get average elapsed.
*
* @return average elapsed
*/
public long getAverageElapsed() {
long total = getTotal();
if (total == 0) {
return 0;
}
return getTotalElapsed() / total;
}
/**
* get max elapsed.
*
* @return max elapsed
*/
public long getMaxElapsed() {
return maxElapsed.get();
}
/**
* get failed.
*
* @return failed
*/
public int getFailed() {
return failed.get();
}
/**
* get failed elapsed.
*
* @return failed elapsed
*/
public long getFailedElapsed() {
return failedElapsed.get();
}
/**
* get failed average elapsed.
*
* @return failed average elapsed
*/
public long getFailedAverageElapsed() {
long failed = getFailed();
if (failed == 0) {
return 0;
}
return getFailedElapsed() / failed;
}
/**
* get failed max elapsed.
*
* @return failed max elapsed
*/
public long getFailedMaxElapsed() {
return failedMaxElapsed.get();
}
/**
* get succeeded.
*
* @return succeeded
*/
public long getSucceeded() {
return getTotal() - getFailed();
}
/**
* get succeeded elapsed.
*
* @return succeeded elapsed
*/
public long getSucceededElapsed() {
return getTotalElapsed() - getFailedElapsed();
}
/**
* get succeeded average elapsed.
*
* @return succeeded average elapsed
*/
public long getSucceededAverageElapsed() {
long succeeded = getSucceeded();
if (succeeded == 0) {
return 0;
}
return getSucceededElapsed() / succeeded;
}
/**
* get succeeded max elapsed.
*
* @return succeeded max elapsed.
*/
public long getSucceededMaxElapsed() {
return succeededMaxElapsed.get();
}
/**
* Calculate average TPS (Transaction per second).
*
* @return tps
*/
public long getAverageTps() {
if (getTotalElapsed() >= 1000L) {
return getTotal() / (getTotalElapsed() / 1000L);
}
return getTotal();
}
}