io.questdb.cutlass.line.udp.LinuxMMLineProtoReceiver Maven / Gradle / Ivy

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/*******************************************************************************
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 *
 *  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.
 *
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package io.questdb.cutlass.line.udp;

import io.questdb.cairo.CairoEngine;
import io.questdb.mp.WorkerPool;
import io.questdb.network.Net;

public class LinuxMMLineProtoReceiver extends AbstractLineProtoReceiver {
    private final int msgCount;
    private long msgVec;

    public LinuxMMLineProtoReceiver(
            LineUdpReceiverConfiguration configuration,
            CairoEngine engine,
            WorkerPool workerPool
    ) {
        super(configuration, engine, workerPool);
        this.msgCount = configuration.getMsgCount();
        msgVec = nf.msgHeaders(configuration.getMsgBufferSize(), msgCount);
        start();
    }

    @Override
    public void close() {
        super.close();
        if (msgVec != 0) {
            nf.freeMsgHeaders(msgVec);
            msgVec = 0;
        }
    }

    @Override
    protected boolean runSerially() {
        boolean ran = false;
        int count;
        while ((count = nf.recvmmsg(fd, msgVec, msgCount)) > 0) {
            long p = msgVec;
            for (int i = 0; i < count; i++) {
                long buf = nf.getMMsgBuf(p);
                lexer.parse(buf, buf + nf.getMMsgBufLen(p));
                lexer.parseLast();
                p += Net.MMSGHDR_SIZE;
            }

            totalCount += count;

            if (totalCount > commitRate) {
                totalCount = 0;
                parser.commitAll(commitMode);
            }

            if (ran) {
                continue;
            }

            ran = true;
        }
        parser.commitAll(commitMode);
        return ran;
    }
}