org.tomitribe.beryllium.internal.logging.LoggerPrintStream.java Source code

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Here is the source code for org.tomitribe.beryllium.internal.logging.LoggerPrintStream.java

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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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
 *
 *   http://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.tomitribe.beryllium.internal.logging;

import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.event.Level;

import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintStream;

public class LoggerPrintStream extends PrintStream {

    public LoggerPrintStream(Logger logger, Level level) {
        super(new LoggerOutputStream(logger, level), true);
    }

    private static class LoggerOutputStream extends OutputStream {

        private final Logger logger;
        private final Level level;
        private StringBuilder stringBuilder = new StringBuilder();

        LoggerOutputStream(Logger logger, Level level) {
            this.logger = logger;
            this.level = level;
        }

        @Override
        public void write(int b) throws IOException {
            stringBuilder.append((char) b);
        }

        @Override
        public void flush() {
            log(logger, level, stringBuilder.toString());
            stringBuilder = new StringBuilder();
        }

        private void log(Logger logger, Level level, String message) {

            if (StringUtils.isBlank(message))
                return;

            switch (level) {
            case TRACE:
                logger.trace(message);
                break;
            case DEBUG:
                logger.debug(message);
                break;
            case INFO:
                logger.info(message);
                break;
            case WARN:
                logger.warn(message);
                break;
            case ERROR:
                logger.error(message);
                break;
            }
        }
    }

}