are.aether-net.0.1.0.source-code.monitor.js Maven / Gradle / Ivy

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Aether-Net: Monitoring for Aeron
There is a newer version: 0.3.0
/*
 * Copyright 2019 Aitu Software Limited.
 *
 * https://aitusoftware.com
 *
 * 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.
 */
var aetherSocket;

function startMonitor() {
    if (window.WebSocket) {
        aetherSocket = new WebSocket("ws://localhost:8080/aether");
        aetherSocket.onmessage = function(event) {
            renderStreamData(JSON.parse(event.data));
        }
        aetherSocket.onopen = function(event) {
        }
        aetherSocket.onclose = function(event) {
        }
    } else {
        alert("WebSockets not supported.");
    }

    window.setInterval(pollData, 100);
}

function systemStatRow(name, value) {
    return '' + name +
        '
' + value + '';
}

function pubStatRow(name, value, extClass, bottomRow) {
    return '
' + name +
        '
' + value + '';
}

function subStatRow(name, value, extClass, bottomRow) {
    return '
' + name +
        '
' + value + '';
}

function renderStreamData(allData) {
    var html = '';
    var systemCounters = allData['systemCounters'];
    for (var label in systemCounters) {
        html += '' + label + '';
        var systemCounterSet = systemCounters[label];
        html += systemStatRow('Bytes sent', systemCounterSet.bytesSent);
        html += systemStatRow('Bytes received', systemCounterSet.bytesReceived);
        html += systemStatRow('NAKs sent', systemCounterSet.naksSent);
        html += systemStatRow('NAKs received', systemCounterSet.naksReceived);
        html += systemStatRow('Errors', systemCounterSet.errors);
        html += systemStatRow('Client timeouts', systemCounterSet.clientTimeouts);
    }
    var streamData = allData['streams'];
    for (var channel in streamData) {
        for (var streamId in streamData[channel]) {
            html += '' + channel + ' / ' + streamId + '';
            var publisherSet = streamData[channel][streamId];
            for (var i = 0; i < publisherSet.length; i++) {
                var publisher = publisherSet[i];
                var bpeCls = publisher.backPressureEvents == 0 ? '' : 'pub-data-highlight';
                var backlogCls = publisher.sendBacklog == 0 ? '' : 'pub-data-highlight';
                html += pubStatRow('Context', publisher.label, '', false);
                html += pubStatRow('Session', publisher.sessionId, '', false);
                html += pubStatRow('Publisher Position', publisher.publisherPosition, '', false);
                html += pubStatRow('Publisher Limit', publisher.publisherLimit, '', false);
                html += pubStatRow('Sender Position', publisher.senderPosition, '', false);
                html += pubStatRow('Sender Limit', publisher.senderLimit, '', false);
                html += pubStatRow('Back Pressure', publisher.backPressureEvents, bpeCls, false);
                html += pubStatRow('Queued', publisher.sendBacklog, backlogCls, false);
                html += pubStatRow('Remaining Buffer', publisher.remainingBuffer, '', true);
                var subscriberSet = publisher.subscribers;

                for (var j = 0; j < subscriberSet.length; j++) {
                    var subscriber = subscriberSet[j];
                    html += '';
                    html += subStatRow('Context', subscriber.label, '', false);
                    html += subStatRow('Receiver Position', subscriber.receiverPosition, '', false);
                    html += subStatRow('Receiver HWM', subscriber.receiverHighWaterMark, '', true);
                    for (var reg in subscriber.subscriberPositions) {
                        var available = (subscriber.receiverPosition - subscriber.subscriberPositions[reg]);
                        var cls = available > 0 ? 'sub-data-highlight' : '';
                        html += subStatRow('Subscriber Position', subscriber.subscriberPositions[reg], '', false);
                        html += subStatRow('Bytes Available', available, cls, true);
                    }
                }

            }
        }
    }

    document.getElementById('stream-data').innerHTML = html;
}

function pollData() {
    if (aetherSocket.readyState == WebSocket.OPEN) {
        aetherSocket.send('');
    } else {
        document.getElementById('stream-data').innerHTML = 'Socket closed';
    }
}