spring LogbackLoggingSystemProperties 源码
springboot LogbackLoggingSystemProperties 代码
文件路径:/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/logback/LogbackLoggingSystemProperties.java
/*
* Copyright 2012-2022 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
*
* 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.nio.charset.Charset;
import java.util.function.BiConsumer;
import ch.qos.logback.core.util.FileSize;
import org.springframework.boot.logging.LogFile;
import org.springframework.boot.logging.LoggingSystemProperties;
import org.springframework.core.convert.ConversionFailedException;
import org.springframework.core.convert.ConverterNotFoundException;
import org.springframework.core.env.Environment;
import org.springframework.core.env.PropertyResolver;
import org.springframework.util.unit.DataSize;
/**
* {@link LoggingSystemProperties} for Logback.
*
* @author Phillip Webb
* @since 2.4.0
*/
public class LogbackLoggingSystemProperties extends LoggingSystemProperties {
/**
* The name of the System property that contains the rolled-over log file name
* pattern.
*/
public static final String ROLLINGPOLICY_FILE_NAME_PATTERN = "LOGBACK_ROLLINGPOLICY_FILE_NAME_PATTERN";
/**
* The name of the System property that contains the clean history on start flag.
*/
public static final String ROLLINGPOLICY_CLEAN_HISTORY_ON_START = "LOGBACK_ROLLINGPOLICY_CLEAN_HISTORY_ON_START";
/**
* The name of the System property that contains the file log max size.
*/
public static final String ROLLINGPOLICY_MAX_FILE_SIZE = "LOGBACK_ROLLINGPOLICY_MAX_FILE_SIZE";
/**
* The name of the System property that contains the file total size cap.
*/
public static final String ROLLINGPOLICY_TOTAL_SIZE_CAP = "LOGBACK_ROLLINGPOLICY_TOTAL_SIZE_CAP";
/**
* The name of the System property that contains the file log max history.
*/
public static final String ROLLINGPOLICY_MAX_HISTORY = "LOGBACK_ROLLINGPOLICY_MAX_HISTORY";
public LogbackLoggingSystemProperties(Environment environment) {
super(environment);
}
/**
* Create a new {@link LogbackLoggingSystemProperties} instance.
* @param environment the source environment
* @param setter setter used to apply the property
* @since 2.4.3
*/
public LogbackLoggingSystemProperties(Environment environment, BiConsumer<String, String> setter) {
super(environment, setter);
}
@Override
protected Charset getDefaultCharset() {
return Charset.defaultCharset();
}
@Override
protected void apply(LogFile logFile, PropertyResolver resolver) {
super.apply(logFile, resolver);
applyRollingPolicy(resolver, ROLLINGPOLICY_FILE_NAME_PATTERN, "logging.logback.rollingpolicy.file-name-pattern",
"logging.pattern.rolling-file-name");
applyRollingPolicy(resolver, ROLLINGPOLICY_CLEAN_HISTORY_ON_START,
"logging.logback.rollingpolicy.clean-history-on-start", "logging.file.clean-history-on-start");
applyRollingPolicy(resolver, ROLLINGPOLICY_MAX_FILE_SIZE, "logging.logback.rollingpolicy.max-file-size",
"logging.file.max-size", DataSize.class);
applyRollingPolicy(resolver, ROLLINGPOLICY_TOTAL_SIZE_CAP, "logging.logback.rollingpolicy.total-size-cap",
"logging.file.total-size-cap", DataSize.class);
applyRollingPolicy(resolver, ROLLINGPOLICY_MAX_HISTORY, "logging.logback.rollingpolicy.max-history",
"logging.file.max-history");
}
private void applyRollingPolicy(PropertyResolver resolver, String systemPropertyName, String propertyName,
String deprecatedPropertyName) {
applyRollingPolicy(resolver, systemPropertyName, propertyName, deprecatedPropertyName, String.class);
}
private <T> void applyRollingPolicy(PropertyResolver resolver, String systemPropertyName, String propertyName,
String deprecatedPropertyName, Class<T> type) {
T value = getProperty(resolver, propertyName, type);
if (value == null) {
value = getProperty(resolver, deprecatedPropertyName, type);
}
if (value != null) {
String stringValue = String.valueOf((value instanceof DataSize dataSize) ? dataSize.toBytes() : value);
setSystemProperty(systemPropertyName, stringValue);
}
}
@SuppressWarnings("unchecked")
private <T> T getProperty(PropertyResolver resolver, String key, Class<T> type) {
try {
return resolver.getProperty(key, type);
}
catch (ConversionFailedException | ConverterNotFoundException ex) {
if (type != DataSize.class) {
throw ex;
}
String value = resolver.getProperty(key);
return (T) DataSize.ofBytes(FileSize.valueOf(value).getSize());
}
}
}
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