com.streamsets.pipeline.api.ext.DataCollectorServices Maven / Gradle / Ivy
/*
* Copyright 2017 StreamSets Inc.
*
* Licensed 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 com.streamsets.pipeline.api.ext;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
/**
* API for global references in Data Collector
*/
public class DataCollectorServices {
private static final Map globals = new ConcurrentHashMap<>();
private static final DataCollectorServices instance = new DataCollectorServices();
private DataCollectorServices() {}
public static DataCollectorServices instance() {
return instance;
}
@SuppressWarnings("unchecked")
public T get(String key) {
return (T) globals.get(key);
}
@SuppressWarnings("unchecked")
public T put(String key, Object ref) {
return (T) globals.put(key, ref);
}
}