/**
* 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.ignite.cache;
import java.util.Collection;
import java.util.Map;
import java.util.Set;
import org.apache.camel.AsyncCallback;
import org.apache.camel.Exchange;
import org.apache.camel.InvalidPayloadException;
import org.apache.camel.Message;
import org.apache.camel.RuntimeCamelException;
import org.apache.camel.component.ignite.IgniteConstants;
import org.apache.camel.component.ignite.IgniteHelper;
import org.apache.camel.impl.DefaultAsyncProducer;
import org.apache.camel.spi.Synchronization;
import org.apache.camel.util.MessageHelper;
import org.apache.ignite.IgniteCache;
import org.apache.ignite.cache.CachePeekMode;
import org.apache.ignite.cache.query.Query;
import org.apache.ignite.cache.query.QueryCursor;
/**
* Ignite Cache producer.
*/
public class IgniteCacheProducer extends DefaultAsyncProducer {
private IgniteCache<Object, Object> cache;
private IgniteCacheEndpoint endpoint;
public IgniteCacheProducer(IgniteCacheEndpoint endpoint, IgniteCache<Object, Object> igniteCache) {
super(endpoint);
this.endpoint = endpoint;
this.cache = igniteCache;
}
@Override
public boolean process(Exchange exchange, AsyncCallback callback) {
Message in = exchange.getIn();
Message out = exchange.getOut();
MessageHelper.copyHeaders(exchange.getIn(), out, true);
switch (cacheOperationFor(exchange)) {
case GET:
doGet(in, out);
break;
case PUT:
doPut(in, out);
break;
case QUERY:
doQuery(in, out, exchange);
break;
case REMOVE:
doRemove(in, out);
break;
case CLEAR:
doClear(in, out);
break;
case SIZE:
doSize(in, out);
break;
case REBALANCE:
doRebalance(in, out);
break;
default:
break;
}
return true;
}
@SuppressWarnings("unchecked")
private void doGet(Message in, Message out) {
Object cacheKey = cacheKey(in);
if (cacheKey instanceof Set && !endpoint.isTreatCollectionsAsCacheObjects()) {
out.setBody(cache.getAll((Set<Object>) cacheKey));
} else {
out.setBody(cache.get(cacheKey));
}
}
@SuppressWarnings("unchecked")
private void doPut(Message in, Message out) {
Map<Object, Object> map = in.getBody(Map.class);
if (map != null) {
cache.putAll(map);
return;
}
Object cacheKey = in.getHeader(IgniteConstants.IGNITE_CACHE_KEY);
if (cacheKey == null) {
throw new RuntimeCamelException("Cache PUT operation requires the cache key in the CamelIgniteCacheKey header, " + "or a payload of type Map.");
}
cache.put(cacheKey, in.getBody());
IgniteHelper.maybePropagateIncomingBody(endpoint, in, out);
}
@SuppressWarnings("unchecked")
private void doQuery(Message in, Message out, Exchange exchange) {
Query<Object> query = in.getHeader(IgniteConstants.IGNITE_CACHE_QUERY, Query.class);
if (query == null) {
try {
query = in.getMandatoryBody(Query.class);
} catch (InvalidPayloadException e) {
exchange.setException(e);
return;
}
}
final QueryCursor<Object> cursor = cache.query(query);
out.setBody(cursor.iterator());
exchange.addOnCompletion(new Synchronization() {
@Override
public void onFailure(Exchange exchange) {
cursor.close();
}
@Override
public void onComplete(Exchange exchange) {
cursor.close();
}
});
}
@SuppressWarnings("unchecked")
private void doRemove(Message in, Message out) {
Object cacheKey = cacheKey(in);
if (cacheKey instanceof Set && !endpoint.isTreatCollectionsAsCacheObjects()) {
cache.removeAll((Set<Object>) cacheKey);
} else {
cache.remove(cacheKey);
}
IgniteHelper.maybePropagateIncomingBody(endpoint, in, out);
}
private void doClear(Message in, Message out) {
cache.removeAll();
IgniteHelper.maybePropagateIncomingBody(endpoint, in, out);
}
private void doRebalance(Message in, Message out) {
cache.rebalance().get();
IgniteHelper.maybePropagateIncomingBody(endpoint, in, out);
}
@SuppressWarnings("unchecked")
private void doSize(Message in, Message out) {
Object peekMode = in.getHeader(IgniteConstants.IGNITE_CACHE_PEEK_MODE, endpoint.getCachePeekMode());
Integer result = null;
if (peekMode instanceof Collection) {
result = cache.size(((Collection<Object>) peekMode).toArray(new CachePeekMode[0]));
} else if (peekMode instanceof CachePeekMode) {
result = cache.size((CachePeekMode) peekMode);
}
out.setBody(result);
}
private Object cacheKey(Message msg) {
Object cacheKey = msg.getHeader(IgniteConstants.IGNITE_CACHE_KEY);
if (cacheKey == null) {
cacheKey = msg.getBody();
}
return cacheKey;
}
private IgniteCacheOperation cacheOperationFor(Exchange exchange) {
return exchange.getIn().getHeader(IgniteConstants.IGNITE_CACHE_OPERATION, endpoint.getOperation(), IgniteCacheOperation.class);
}
}