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QuestDB is High Performance Time Series Database

There is a newer version: 5.0.1

/*******************************************************************************
 *     ___                  _   ____  ____
 *    / _ \ _   _  ___  ___| |_|  _ \| __ )
 *   | | | | | | |/ _ \/ __| __| | | |  _ \
 *   | |_| | |_| |  __/\__ \ |_| |_| | |_) |
 *    \__\_\\__,_|\___||___/\__|____/|____/
 *
 *  Copyright (c) 2014-2019 Appsicle
 *  Copyright (c) 2019-2020 QuestDB
 *
 *  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
 *
 *  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 io.questdb.log;

import io.questdb.mp.QueueConsumer;
import io.questdb.mp.RingQueue;
import io.questdb.mp.SCSequence;
import io.questdb.mp.SynchronizedJob;
import io.questdb.std.Files;

import java.io.Closeable;

public class LogConsoleWriter extends SynchronizedJob implements Closeable, LogWriter {
    private final long fd = Files.getStdOutFd();
    private final RingQueue ring;
    private final SCSequence subSeq;
    private final int level;
    private final QueueConsumer myConsumer = this::toStdOut;

    public LogConsoleWriter(RingQueue ring, SCSequence subSeq, int level) {
        this.ring = ring;
        this.subSeq = subSeq;
        this.level = level;
    }

    @Override
    public void bindProperties() {
    }

    @Override
    public void close() {
    }

    @Override
    public boolean runSerially() {
        return subSeq.consumeAll(ring, myConsumer);
    }

    private void toStdOut(LogRecordSink sink) {
        if ((sink.getLevel() & this.level) != 0) {
            Files.append(fd, sink.getAddress(), sink.length());
        }
    }
}