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/*
* Copyright 2012-2021 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;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.function.BiConsumer;
import org.springframework.boot.system.ApplicationPid;
import org.springframework.core.env.ConfigurableEnvironment;
import org.springframework.core.env.Environment;
import org.springframework.core.env.PropertyResolver;
import org.springframework.core.env.PropertySourcesPropertyResolver;
import org.springframework.util.Assert;
/**
* Utility to set system properties that can later be used by log configuration files.
*
* @author Andy Wilkinson
* @author Phillip Webb
* @author Madhura Bhave
* @author Vedran Pavic
* @author Robert Thornton
* @author Eddú Meléndez
* @since 2.0.0
*/
public class LoggingSystemProperties {
/**
* The name of the System property that contains the process ID.
*/
public static final String PID_KEY = "PID";
/**
* The name of the System property that contains the exception conversion word.
*/
public static final String EXCEPTION_CONVERSION_WORD = "LOG_EXCEPTION_CONVERSION_WORD";
/**
* The name of the System property that contains the log file.
*/
public static final String LOG_FILE = "LOG_FILE";
/**
* The name of the System property that contains the log path.
*/
public static final String LOG_PATH = "LOG_PATH";
/**
* The name of the System property that contains the console log pattern.
*/
public static final String CONSOLE_LOG_PATTERN = "CONSOLE_LOG_PATTERN";
/**
* The name of the System property that contains the console log charset.
*/
public static final String CONSOLE_LOG_CHARSET = "CONSOLE_LOG_CHARSET";
/**
* The name of the System property that contains the file log pattern.
*/
public static final String FILE_LOG_PATTERN = "FILE_LOG_PATTERN";
/**
* The name of the System property that contains the file log charset.
*/
public static final String FILE_LOG_CHARSET = "FILE_LOG_CHARSET";
/**
* The name of the System property that contains the log level pattern.
*/
public static final String LOG_LEVEL_PATTERN = "LOG_LEVEL_PATTERN";
/**
* The name of the System property that contains the log date-format pattern.
*/
public static final String LOG_DATEFORMAT_PATTERN = "LOG_DATEFORMAT_PATTERN";
private static final BiConsumer systemPropertySetter = (name, value) -> {
if (System.getProperty(name) == null && value != null) {
System.setProperty(name, value);
}
};
private final Environment environment;
private final BiConsumer setter;
/**
* Create a new {@link LoggingSystemProperties} instance.
* @param environment the source environment
*/
public LoggingSystemProperties(Environment environment) {
this(environment, systemPropertySetter);
}
/**
* Create a new {@link LoggingSystemProperties} instance.
* @param environment the source environment
* @param setter setter used to apply the property
* @since 2.4.2
*/
public LoggingSystemProperties(Environment environment, BiConsumer setter) {
Assert.notNull(environment, "Environment must not be null");
Assert.notNull(setter, "Setter must not be null");
this.environment = environment;
this.setter = setter;
}
protected Charset getDefaultCharset() {
return StandardCharsets.UTF_8;
}
public final void apply() {
apply(null);
}
public final void apply(LogFile logFile) {
PropertyResolver resolver = getPropertyResolver();
apply(logFile, resolver);
}
protected void apply(LogFile logFile, PropertyResolver resolver) {
setSystemProperty(resolver, EXCEPTION_CONVERSION_WORD, "logging.exception-conversion-word");
setSystemProperty(PID_KEY, new ApplicationPid().toString());
setSystemProperty(resolver, CONSOLE_LOG_PATTERN, "logging.pattern.console");
setSystemProperty(resolver, CONSOLE_LOG_CHARSET, "logging.charset.console", getDefaultCharset().name());
setSystemProperty(resolver, LOG_DATEFORMAT_PATTERN, "logging.pattern.dateformat");
setSystemProperty(resolver, FILE_LOG_PATTERN, "logging.pattern.file");
setSystemProperty(resolver, FILE_LOG_CHARSET, "logging.charset.file", getDefaultCharset().name());
setSystemProperty(resolver, LOG_LEVEL_PATTERN, "logging.pattern.level");
if (logFile != null) {
logFile.applyToSystemProperties();
}
}
private PropertyResolver getPropertyResolver() {
if (this.environment instanceof ConfigurableEnvironment) {
PropertySourcesPropertyResolver resolver = new PropertySourcesPropertyResolver(
((ConfigurableEnvironment) this.environment).getPropertySources());
resolver.setConversionService(((ConfigurableEnvironment) this.environment).getConversionService());
resolver.setIgnoreUnresolvableNestedPlaceholders(true);
return resolver;
}
return this.environment;
}
protected final void setSystemProperty(PropertyResolver resolver, String systemPropertyName, String propertyName) {
setSystemProperty(resolver, systemPropertyName, propertyName, null);
}
protected final void setSystemProperty(PropertyResolver resolver, String systemPropertyName, String propertyName,
String defaultValue) {
String value = resolver.getProperty(propertyName);
value = (value != null) ? value : defaultValue;
setSystemProperty(systemPropertyName, value);
}
protected final void setSystemProperty(String name, String value) {
this.setter.accept(name, value);
}
}
