/*
* 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.flume.source;
import java.util.Locale;
import org.apache.flume.FlumeException;
import org.apache.flume.Source;
import org.apache.flume.SourceFactory;
import org.apache.flume.conf.source.SourceType;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.base.Preconditions;
public class DefaultSourceFactory implements SourceFactory {
private static final Logger logger = LoggerFactory
.getLogger(DefaultSourceFactory.class);
@Override
public Source create(String name, String type) throws FlumeException {
Preconditions.checkNotNull(name, "name");
Preconditions.checkNotNull(type, "type");
logger.info("Creating instance of source {}, type {}", name, type);
Class<? extends Source> sourceClass = getClass(type);
try {
Source source = sourceClass.newInstance();
source.setName(name);
return source;
} catch (Exception ex) {
throw new FlumeException("Unable to create source: " + name
+", type: " + type + ", class: " + sourceClass.getName(), ex);
}
}
@SuppressWarnings("unchecked")
@Override
public Class<? extends Source> getClass(String type)
throws FlumeException {
String sourceClassName = type;
SourceType srcType = SourceType.OTHER;
try {
srcType = SourceType.valueOf(type.toUpperCase(Locale.ENGLISH));
} catch (IllegalArgumentException ex) {
logger.debug("Source type {} is a custom type", type);
}
if (!srcType.equals(SourceType.OTHER)) {
sourceClassName = srcType.getSourceClassName();
}
try {
return (Class<? extends Source>) Class.forName(sourceClassName);
} catch (Exception ex) {
throw new FlumeException("Unable to load source type: " + type
+ ", class: " + sourceClassName, ex);
}
}
}