org.apache.camel.component.caffeine.cache.CaffeineCacheEndpoint Maven / Gradle / Ivy
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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.camel.component.caffeine.cache;
import com.github.benmanes.caffeine.cache.Cache;
import org.apache.camel.Category;
import org.apache.camel.Component;
import org.apache.camel.Consumer;
import org.apache.camel.Processor;
import org.apache.camel.Producer;
import org.apache.camel.component.caffeine.CaffeineConfiguration;
import org.apache.camel.component.caffeine.CaffeineConstants;
import org.apache.camel.spi.Metadata;
import org.apache.camel.spi.UriEndpoint;
import org.apache.camel.spi.UriParam;
import org.apache.camel.spi.UriPath;
import org.apache.camel.support.CamelContextHelper;
import org.apache.camel.support.DefaultEndpoint;
/**
* Perform caching operations using Caffeine Cache.
*/
@UriEndpoint(firstVersion = "2.20.0", scheme = "caffeine-cache", title = "Caffeine Cache",
syntax = "caffeine-cache:cacheName", category = { Category.CACHE, Category.DATAGRID, Category.CLUSTERING },
producerOnly = true, headersClass = CaffeineConstants.class)
public class CaffeineCacheEndpoint extends DefaultEndpoint {
@UriPath(description = "Cache name")
@Metadata(required = true)
private final String cacheName;
@UriParam
private final CaffeineConfiguration configuration;
private volatile Cache, ?> cache;
CaffeineCacheEndpoint(String uri, Component component, String cacheName, CaffeineConfiguration configuration) {
super(uri, component);
this.cacheName = cacheName;
this.configuration = configuration;
}
@Override
public CaffeineCacheComponent getComponent() {
return (CaffeineCacheComponent) super.getComponent();
}
@Override
public Producer createProducer() throws Exception {
return new CaffeineCacheProducer(this, configuration, cache);
}
@Override
protected void doStart() throws Exception {
super.doStart();
cache = CamelContextHelper.lookup(getCamelContext(), cacheName, Cache.class);
if (cache == null) {
if (configuration.isCreateCacheIfNotExist()) {
cache = getComponent().getOrCreateCache(cacheName, configuration);
} else {
throw new IllegalArgumentException(
"Cache instance '" + cacheName + "' not found and createCacheIfNotExist is set to false");
}
}
}
@Override
protected void doStop() throws Exception {
super.doStop();
}
CaffeineConfiguration getConfiguration() {
return configuration;
}
@Override
public Consumer createConsumer(Processor processor) throws Exception {
throw new IllegalArgumentException("The caffeine-cache component doesn't support consumer");
}
}
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