Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance. Project price only 1 $
You can buy this project and download/modify it how often you want.
/* Copyright 2022 predic8 GmbH, www.predic8.com
Licensed 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 com.predic8.membrane.core.transport.http2;
import com.predic8.membrane.core.transport.http.ConnectionKey;
import com.predic8.membrane.core.transport.http.client.ProxyConfiguration;
import com.predic8.membrane.core.transport.ssl.SSLContext;
import com.predic8.membrane.core.transport.ssl.SSLProvider;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.annotation.concurrent.GuardedBy;
import java.util.*;
public class Http2ClientPool {
private static Logger log = LoggerFactory.getLogger(Http2ClientPool.class.getName());
private final long keepAliveTimeout;
@GuardedBy("availableConnections")
private final HashMap> availableConnections = new HashMap<>();
private final Timer timer;
private volatile boolean shutdownWhenDone = false;
public Http2ClientPool(long keepAliveTimeout) {
this.keepAliveTimeout = keepAliveTimeout;
long autoCloseInterval = keepAliveTimeout * 2;
timer = new Timer("Connection Closer", true);
timer.schedule(new TimerTask() {
@Override
public void run() {
if (closeOldConnections() == 0 && shutdownWhenDone)
timer.cancel();
}
}, autoCloseInterval, autoCloseInterval);
}
public Http2Client reserveStream(String host, int port, SSLProvider sslProvider, String sniServerName, ProxyConfiguration proxy, SSLContext proxySSLContext) {
ConnectionKey key = new ConnectionKey(host, port, sslProvider, sniServerName, proxy, proxySSLContext, null);
synchronized(availableConnections) {
ArrayList http2Clients = availableConnections.get(key);
if (http2Clients == null)
return null;
for (Http2Client h2c : http2Clients) {
if (h2c.reserveStream())
return h2c;
}
}
return null;
}
public void share(String host, int port, SSLProvider sslProvider, String sniServerName, ProxyConfiguration proxy, SSLContext proxySSLContext, Http2Client h2c) {
ConnectionKey key = new ConnectionKey(host, port, sslProvider, sniServerName, proxy, proxySSLContext, null);
synchronized(availableConnections) {
ArrayList http2Clients = availableConnections.computeIfAbsent(key, k -> new ArrayList<>());
http2Clients.add(h2c);
}
}
public void shutdownWhenDone() {
shutdownWhenDone = true;
}
private int closeOldConnections() {
ArrayList toRemove = new ArrayList<>();
ArrayList toClose = new ArrayList<>();
log.trace("closing old connections");
int closed = 0, remaining;
synchronized(availableConnections) {
// close connections after their timeout
for (Map.Entry> e : availableConnections.entrySet()) {
ArrayList l = e.getValue();
for (int i = 0; i < l.size(); i++) {
Http2Client o = l.get(i);
if (o.isIdle()) {
// replace [i] by [last]
if (i == l.size() - 1)
l.remove(i);
else
l.set(i, l.remove(l.size() - 1));
--i;
closed++;
toClose.add(o);
}
}
if (l.isEmpty())
toRemove.add(e.getKey());
}
for (ConnectionKey remove : toRemove)
availableConnections.remove(remove);
remaining = availableConnections.size();
}
for (Http2Client c : toClose) {
try {
c.close();
} catch (Exception e) {
// do nothing
}
}
if (closed != 0)
log.debug("closed " + closed + " connections");
return remaining;
}
}
