org.springframework.security.web.debug.Logger.java Source code

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Here is the source code for org.springframework.security.web.debug.Logger.java

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/*
 * Copyright 2002-2016 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.security.web.debug;

import java.io.PrintWriter;
import java.io.StringWriter;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * Controls output for the Spring Security debug feature.
 *
 * @author Luke Taylor
 * @since 3.1
 */
final class Logger {
    private static final Log logger = LogFactory.getLog("Spring Security Debugger");

    public void info(String message) {
        info(message, false);
    }

    public void info(String message, boolean dumpStack) {
        StringBuilder output = new StringBuilder(256);
        output.append("\n\n************************************************************\n\n");
        output.append(message).append("\n");

        if (dumpStack) {
            StringWriter os = new StringWriter();
            new Exception().printStackTrace(new PrintWriter(os));
            StringBuffer buffer = os.getBuffer();
            // Remove the exception in case it scares people.
            int start = buffer.indexOf("java.lang.Exception");
            buffer.replace(start, start + 19, "");
            output.append("\nCall stack: \n").append(os.toString());
        }

        output.append("\n\n************************************************************\n\n");

        logger.info(output.toString());
    }
}