spring ColorConverter 源码
springboot ColorConverter 代码
文件路径：/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/logback/ColorConverter.java
/*
* Copyright 2012-2019 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
*
* https://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.springframework.boot.logging.logback;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import ch.qos.logback.classic.Level;
import ch.qos.logback.classic.spi.ILoggingEvent;
import ch.qos.logback.core.pattern.CompositeConverter;
import org.springframework.boot.ansi.AnsiColor;
import org.springframework.boot.ansi.AnsiElement;
import org.springframework.boot.ansi.AnsiOutput;
import org.springframework.boot.ansi.AnsiStyle;
/**
* Logback {@link CompositeConverter} colors output using the {@link AnsiOutput} class. A
* single 'color' option can be provided to the converter, or if not specified color will
* be picked based on the logging level.
*
* @author Phillip Webb
* @since 1.0.0
*/
public class ColorConverter extends CompositeConverter<ILoggingEvent> {
private static final Map<String, AnsiElement> ELEMENTS;
static {
Map<String, AnsiElement> ansiElements = new HashMap<>();
ansiElements.put("faint", AnsiStyle.FAINT);
ansiElements.put("red", AnsiColor.RED);
ansiElements.put("green", AnsiColor.GREEN);
ansiElements.put("yellow", AnsiColor.YELLOW);
ansiElements.put("blue", AnsiColor.BLUE);
ansiElements.put("magenta", AnsiColor.MAGENTA);
ansiElements.put("cyan", AnsiColor.CYAN);
ELEMENTS = Collections.unmodifiableMap(ansiElements);
}
private static final Map<Integer, AnsiElement> LEVELS;
static {
Map<Integer, AnsiElement> ansiLevels = new HashMap<>();
ansiLevels.put(Level.ERROR_INTEGER, AnsiColor.RED);
ansiLevels.put(Level.WARN_INTEGER, AnsiColor.YELLOW);
LEVELS = Collections.unmodifiableMap(ansiLevels);
}
@Override
protected String transform(ILoggingEvent event, String in) {
AnsiElement element = ELEMENTS.get(getFirstOption());
if (element == null) {
// Assume highlighting
element = LEVELS.get(event.getLevel().toInteger());
element = (element != null) ? element : AnsiColor.GREEN;
}
return toAnsiString(in, element);
}
protected String toAnsiString(String in, AnsiElement element) {
return AnsiOutput.toString(element, in);
}
}
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- 本文标签： Spring Boot Java Spring
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