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ResumeActionAwareAdapter.java
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ResumeActionAwareAdapter.java
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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.support.resume;
import java.nio.ByteBuffer;
import org.apache.camel.resume.Cacheable;
import org.apache.camel.resume.Deserializable;
import org.apache.camel.resume.Offset;
import org.apache.camel.resume.OffsetKey;
import org.apache.camel.resume.ResumeAction;
import org.apache.camel.resume.ResumeActionAware;
import org.apache.camel.resume.ResumeAdapter;
import org.apache.camel.resume.cache.ResumeCache;
import org.apache.camel.spi.annotations.JdkService;
/**
* A simple resume adapter that support caching, deserialization and actions. This is usually suitable for supporting
* resume operations that have simple cache storage requirements, but delegate the resume action to the integrations
* (i.e.: such as when resuming from database components, where the resume operation can only be determined by the
* integration itself)
*/
@JdkService(ResumeAdapter.RESUME_ADAPTER_FACTORY)
public class ResumeActionAwareAdapter implements ResumeActionAware, Cacheable, Deserializable {
private ResumeCache<Object> cache;
private ResumeAction resumeAction;
@Override
public void setResumeAction(ResumeAction resumeAction) {
this.resumeAction = resumeAction;
}
@Override
public void resume() {
cache.forEach(resumeAction::evalEntry);
}
private boolean add(Object key, Object offset) {
cache.add(key, offset);
return true;
}
@Override
public boolean add(OffsetKey<?> key, Offset<?> offset) {
return add(key.getValue(), offset.getValue());
}
@Override
public void setCache(ResumeCache<?> cache) {
this.cache = (ResumeCache<Object>) cache;
}
@Override
public ResumeCache<?> getCache() {
return cache;
}
@Override
public boolean deserialize(ByteBuffer keyBuffer, ByteBuffer valueBuffer) {
Object key = deserializeObject(keyBuffer);
Object value = deserializeObject(valueBuffer);
return add(key, value);
}
}