org.springframework.boot.Banner Maven / Gradle / Ivy
/*
* Copyright 2012-2017 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;
import java.io.PrintStream;
import org.springframework.core.env.Environment;
/**
* Interface class for writing a banner programmatically.
*
* @author Phillip Webb
* @author Michael Stummvoll
* @author Jeremy Rickard
* @since 1.2.0
*/
@FunctionalInterface
public interface Banner {
/**
* Print the banner to the specified print stream.
* @param environment the spring environment
* @param sourceClass the source class for the application
* @param out the output print stream
*/
void printBanner(Environment environment, Class sourceClass, PrintStream out);
/**
* An enumeration of possible values for configuring the Banner.
*/
enum Mode {
/**
* Disable printing of the banner.
*/
OFF,
/**
* Print the banner to System.out.
*/
CONSOLE,
/**
* Print the banner to the log file.
*/
LOG
}
}