net.logstash.logback.decorate.FeatureDecorator Maven / Gradle / Ivy
/*
* Copyright 2013-2022 the original author or authors.
*
* 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 net.logstash.logback.decorate;
import java.util.ArrayList;
import java.util.List;
import java.util.function.BiFunction;
import com.fasterxml.jackson.core.JsonFactory;
/**
* A generic decorator that allows enabling/disabling of Jackson features.
*
* @param Type of object being decorated (e.g. {@link JsonFactory})
* @param Feature enum type (e.g. {@link com.fasterxml.jackson.core.JsonFactory.Feature})
*/
public class FeatureDecorator> {
/**
* Jackson feature enum type (e.g. {@link JsonFactory.Feature})
*/
private final Class enumType;
/**
* Function to enable a feature.
*/
private final BiFunction enableFunction;
/**
* Function to disable a feature.
*/
private final BiFunction disableFunction;
/**
* Features to enable
*/
private final List enables = new ArrayList<>();
/**
* Features to disable
*/
private final List disables = new ArrayList<>();
protected FeatureDecorator(
Class enumType,
BiFunction enableFunction,
BiFunction disableFunction) {
this.enumType = enumType;
this.enableFunction = enableFunction;
this.disableFunction = disableFunction;
}
public T decorate(T target) {
T modifiedTarget = target;
for (F feature : enables) {
modifiedTarget = enableFunction.apply(modifiedTarget, feature);
}
for (F feature : disables) {
modifiedTarget = disableFunction.apply(modifiedTarget, feature);
}
return modifiedTarget;
}
/**
* Enables the feature with the given name.
* Reflectively called by logback when reading xml configuration.
* @param feature the name of the feature to enable
*/
public void addEnable(String feature) {
enable(Enum.valueOf(enumType, feature));
}
/**
* Enables the given feature.
* Use this method for programmatic configuration.
* @param feature the feature to enable
*/
public void enable(F feature) {
enables.add(feature);
}
/**
* Disables the feature with the given name.
* Reflectively called by logback when reading xml configuration.
* @param feature the name of the feature to disable
*/
public void addDisable(String feature) {
disable(Enum.valueOf(enumType, feature));
}
/**
* Disables the given feature.
* Use this method for programmatic configuration.
* @param feature the feature to disable
*/
public void disable(F feature) {
disables.add(feature);
}
}