io.questdb.network.IODispatcherConfiguration Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of questdb Show documentation
QuestDB is high performance SQL time series database
There is a newer version: 8.2.1
/*******************************************************************************
 *     ___                  _   ____  ____
 *    / _ \ _   _  ___  ___| |_|  _ \| __ )
 *   | | | | | | |/ _ \/ __| __| | | |  _ \
 *   | |_| | |_| |  __/\__ \ |_| |_| | |_) |
 *    \__\_\\__,_|\___||___/\__|____/|____/
 *
 *  Copyright (c) 2014-2019 Appsicle
 *  Copyright (c) 2019-2024 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.network;

import io.questdb.std.Numbers;
import io.questdb.std.Os;
import io.questdb.std.datetime.millitime.MillisecondClock;

public interface IODispatcherConfiguration {
    int BIAS_READ = 1;
    int BIAS_WRITE = 2;

    int getBindIPv4Address();

    int getBindPort();

    MillisecondClock getClock();

    default String getDispatcherLogName() {
        return "IODispatcher";
    }

    EpollFacade getEpollFacade();

    default int getEventCapacity() {
        return Numbers.ceilPow2(getLimit());
    }

    long getHeartbeatInterval();

    default boolean getHint() {
        return false;
    }

    default int getIOQueueCapacity() {
        return Numbers.ceilPow2(getLimit());
    }

    default int getInitialBias() {
        return BIAS_READ;
    }

    default int getInterestQueueCapacity() {
        return Numbers.ceilPow2(getLimit());
    }

    KqueueFacade getKqueueFacade();

    int getLimit();

    default int getListenBacklog() {
        if (Os.isWindows() && getHint()) {
            // Windows OS might have a limit of 200 concurrent connections. To overcome
            // this limit we set backlog value to a hint as described here:
            /// https://docs.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-listen
            // the hint is -backlog
            return -getLimit();
        }
        return getLimit();
    }

    NetworkFacade getNetworkFacade();

    default boolean getPeerNoLinger() {
        return false;
    }

    long getQueueTimeout();

    int getRcvBufSize();

    SelectFacade getSelectFacade();

    int getSndBufSize();

    int getTestConnectionBufferSize();

    long getTimeout();
}