/**
* 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.gora;
import java.util.Map;
import org.apache.camel.Endpoint;
import org.apache.camel.Exchange;
import org.apache.camel.ServicePoolAware;
import org.apache.camel.impl.DefaultProducer;
import org.apache.gora.persistency.Persistent;
import org.apache.gora.store.DataStore;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import static org.apache.camel.component.gora.utils.GoraUtils.constractQueryFromPropertiesMap;
import static org.apache.camel.component.gora.utils.GoraUtils.getKeyFromExchange;
import static org.apache.camel.component.gora.utils.GoraUtils.getValueFromExchange;
/**
* Camel-Gora {@link DefaultProducer}.
*/
public class GoraProducer extends DefaultProducer implements ServicePoolAware {
/**
* logger
*/
private static final Logger LOG = LoggerFactory.getLogger(GoraProducer.class);
/**
* Camel-Gora endpoint configuration
*/
private final GoraConfiguration configuration;
/**
* GORA datastore
*/
private final DataStore<Object, Persistent> dataStore;
/**
* Constructor
*
* @param endpoint Reference to the Camel-Gora endpoint
* @param configuration Reference to Camel-Gora endpoint configuration
* @param dataStore Reference to the datastore
*/
public GoraProducer(final Endpoint endpoint,
final GoraConfiguration configuration,
final DataStore<Object, Persistent> dataStore) {
super(endpoint);
this.dataStore = dataStore;
this.configuration = configuration;
}
@Override
public void process(final Exchange exchange) throws Exception {
final String operation = (String) exchange.getIn().getHeader(GoraAttribute.GORA_OPERATION.value);
if (operation == null || operation.isEmpty()) {
throw new RuntimeException("Gora operation is null or empty!");
}
Object result = 0; // 0 used as default response in order to avoid null body exception
if (GoraOperation.PUT.value.equalsIgnoreCase(operation)) {
dataStore.put(getKeyFromExchange(exchange), getValueFromExchange(exchange));
} else if (GoraOperation.GET.value.equalsIgnoreCase(operation)) {
result = dataStore.get(getKeyFromExchange(exchange));
} else if (GoraOperation.DELETE.value.equalsIgnoreCase(operation)) {
result = dataStore.delete(getKeyFromExchange(exchange));
} else if (GoraOperation.QUERY.value.equalsIgnoreCase(operation)) {
final Map<String, Object> props = exchange.getIn().getHeaders();
result = constractQueryFromPropertiesMap(props, dataStore, this.configuration).execute();
} else if (GoraOperation.DELETE_BY_QUERY.value.equalsIgnoreCase(operation)) {
final Map<String, Object> props = exchange.getIn().getHeaders();
result = dataStore.deleteByQuery(constractQueryFromPropertiesMap(props, dataStore, this.configuration));
} else if (GoraOperation.GET_SCHEMA_NAME.value.equalsIgnoreCase(operation)) {
result = dataStore.getSchemaName();
} else if (GoraOperation.DELETE_SCHEMA.value.equalsIgnoreCase(operation)) {
dataStore.deleteSchema();
} else if (GoraOperation.CREATE_SCHEMA.value.equalsIgnoreCase(operation)) {
dataStore.createSchema();
} else if (GoraOperation.SCHEMA_EXIST.value.equalsIgnoreCase(operation)) {
result = dataStore.schemaExists();
} else {
throw new RuntimeException("Unknown operation: " + operation);
}
/*
from the tests auto-flush seems not to work always
therefore a temporary solution is calling flush
on every action
*/
if (configuration.isFlushOnEveryOperation()) {
dataStore.flush();
}
exchange.getOut().setBody(result);
// preserve headers and attachments
exchange.getOut().setHeaders(exchange.getIn().getHeaders());
exchange.getOut().setAttachments(exchange.getIn().getAttachments());
}
}