hadoop IntegerConfigurationBasicValidator 源码
haddop IntegerConfigurationBasicValidator 代码
文件路径：/hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/diagnostics/IntegerConfigurationBasicValidator.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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.hadoop.fs.azurebfs.diagnostics;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.fs.azurebfs.contracts.diagnostics.ConfigurationValidator;
import org.apache.hadoop.fs.azurebfs.contracts.exceptions.InvalidConfigurationValueException;
/**
* Integer configuration value Validator.
*/
@InterfaceAudience.Public
@InterfaceStability.Evolving
public class IntegerConfigurationBasicValidator extends ConfigurationBasicValidator<Integer> implements ConfigurationValidator {
private final int min;
private final int max;
private final int outlier;
public IntegerConfigurationBasicValidator(final int min, final int max, final int defaultVal, final String configKey, final boolean throwIfInvalid) {
this(min, min, max, defaultVal, configKey, throwIfInvalid);
}
public IntegerConfigurationBasicValidator(final int outlier, final int min, final int max,
final int defaultVal, final String configKey, final boolean throwIfInvalid) {
super(configKey, defaultVal, throwIfInvalid);
this.min = min;
this.max = max;
this.outlier = outlier;
}
public Integer validate(final String configValue) throws InvalidConfigurationValueException {
Integer result = super.validate(configValue);
if (result != null) {
return result;
}
try {
result = Integer.parseInt(configValue);
// throw an exception if a 'within bounds' value is missing
if (getThrowIfInvalid() && (result != outlier) && (result < this.min || result > this.max)) {
throw new InvalidConfigurationValueException(getConfigKey());
}
if (result == outlier) {
return result;
}
// set the value to the nearest bound if it's out of bounds
if (result < this.min) {
return this.min;
}
if (result > this.max) {
return this.max;
}
} catch (NumberFormatException ex) {
throw new InvalidConfigurationValueException(getConfigKey(), ex);
}
return result;
}
}
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