spark ConfigProvider 源码
spark ConfigProvider 代码
文件路径：/common/network-common/src/main/java/org/apache/spark/network/util/ConfigProvider.java
/*
* 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.spark.network.util;
import java.util.Map;
import java.util.NoSuchElementException;
/**
* Provides a mechanism for constructing a {@link TransportConf} using some sort of configuration.
*/
public abstract class ConfigProvider {
/** Obtains the value of the given config, throws NoSuchElementException if it doesn't exist. */
public abstract String get(String name);
/** Returns all the config values in the provider. */
public abstract Iterable<Map.Entry<String, String>> getAll();
public String get(String name, String defaultValue) {
try {
return get(name);
} catch (NoSuchElementException e) {
return defaultValue;
}
}
public int getInt(String name, int defaultValue) {
return Integer.parseInt(get(name, Integer.toString(defaultValue)));
}
public long getLong(String name, long defaultValue) {
return Long.parseLong(get(name, Long.toString(defaultValue)));
}
public double getDouble(String name, double defaultValue) {
return Double.parseDouble(get(name, Double.toString(defaultValue)));
}
public boolean getBoolean(String name, boolean defaultValue) {
return Boolean.parseBoolean(get(name, Boolean.toString(defaultValue)));
}
}
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