io.netty.handler.ssl.OpenSslCachingKeyMaterialProvider Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* Copyright 2018 The Netty Project
*
* The Netty Project 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:
*
* https://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 io.netty.handler.ssl;
import io.netty.buffer.ByteBufAllocator;
import javax.net.ssl.X509KeyManager;
import java.util.Iterator;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
/**
* {@link OpenSslKeyMaterialProvider} that will cache the {@link OpenSslKeyMaterial} to reduce the overhead
* of parsing the chain and the key for generation of the material.
*/
final class OpenSslCachingKeyMaterialProvider extends OpenSslKeyMaterialProvider {
private final int maxCachedEntries;
private volatile boolean full;
private final ConcurrentMap cache = new ConcurrentHashMap();
OpenSslCachingKeyMaterialProvider(X509KeyManager keyManager, String password, int maxCachedEntries) {
super(keyManager, password);
this.maxCachedEntries = maxCachedEntries;
}
@Override
OpenSslKeyMaterial chooseKeyMaterial(ByteBufAllocator allocator, String alias) throws Exception {
OpenSslKeyMaterial material = cache.get(alias);
if (material == null) {
material = super.chooseKeyMaterial(allocator, alias);
if (material == null) {
// No keymaterial should be used.
return null;
}
if (full) {
return material;
}
if (cache.size() > maxCachedEntries) {
full = true;
// Do not cache...
return material;
}
OpenSslKeyMaterial old = cache.putIfAbsent(alias, material);
if (old != null) {
material.release();
material = old;
}
}
// We need to call retain() as we want to always have at least a refCnt() of 1 before destroy() was called.
return material.retain();
}
@Override
void destroy() {
// Remove and release all entries.
do {
Iterator iterator = cache.values().iterator();
while (iterator.hasNext()) {
iterator.next().release();
iterator.remove();
}
} while (!cache.isEmpty());
}
}