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FileStreamSinkConnector.java
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FileStreamSinkConnector.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.kafka.connect.file;
import org.apache.kafka.common.config.ConfigDef;
import org.apache.kafka.common.config.ConfigDef.Importance;
import org.apache.kafka.common.config.ConfigDef.Type;
import org.apache.kafka.common.utils.AppInfoParser;
import org.apache.kafka.connect.connector.Task;
import org.apache.kafka.connect.sink.SinkConnector;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* Very simple connector that works with the console. This connector supports both source and
* sink modes via its 'mode' setting.
*/
public class FileStreamSinkConnector extends SinkConnector {
public static final String FILE_CONFIG = "file";
private static final ConfigDef CONFIG_DEF = new ConfigDef()
.define(FILE_CONFIG, Type.STRING, null, Importance.HIGH, "Destination filename. If not specified, the standard output will be used");
private String filename;
@Override
public String version() {
return AppInfoParser.getVersion();
}
@Override
public void start(Map<String, String> props) {
filename = props.get(FILE_CONFIG);
}
@Override
public Class<? extends Task> taskClass() {
return FileStreamSinkTask.class;
}
@Override
public List<Map<String, String>> taskConfigs(int maxTasks) {
ArrayList<Map<String, String>> configs = new ArrayList<>();
for (int i = 0; i < maxTasks; i++) {
Map<String, String> config = new HashMap<>();
if (filename != null)
config.put(FILE_CONFIG, filename);
configs.add(config);
}
return configs;
}
@Override
public void stop() {
// Nothing to do since FileStreamSinkConnector has no background monitoring.
}
@Override
public ConfigDef config() {
return CONFIG_DEF;
}
}