node-opcua-server
Version:
pure nodejs OPCUA SDK - module server
82 lines • 3.22 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.appendToTimer = appendToTimer;
exports.removeFromTimer = removeFromTimer;
/**
* @module node-opcua-server
*/
const node_opcua_assert_1 = require("node-opcua-assert");
const node_opcua_debug_1 = require("node-opcua-debug");
const node_opcua_types_1 = require("node-opcua-types");
const node_opcua_utils_1 = require("node-opcua-utils");
const debugLog = (0, node_opcua_debug_1.make_debugLog)(__filename);
const doDebug = (0, node_opcua_debug_1.checkDebugFlag)(__filename);
const timers = {};
const NS_PER_SEC = 1e9;
function sampleMonitoredItem(monitoredItem) {
const _monitoredItem = monitoredItem;
if (monitoredItem.monitoringMode === node_opcua_types_1.MonitoringMode.Disabled) {
return;
}
setImmediate(() => {
_monitoredItem._on_sampling_timer();
});
}
function appendToTimer(monitoredItem) {
const samplingInterval = monitoredItem.samplingInterval;
const key = samplingInterval.toString();
(0, node_opcua_assert_1.assert)(samplingInterval > 0);
let _t = timers[key];
if (!_t) {
_t = {
_samplingId: false,
monitoredItems: {},
monitoredItemsCount: 0
};
_t._samplingId = setInterval(() => {
const start = doDebug ? (0, node_opcua_utils_1.hrtime)() : undefined;
let counter = 0;
for (const m in _t.monitoredItems) {
if (Object.prototype.hasOwnProperty.call(_t.monitoredItems, m)) {
sampleMonitoredItem(_t.monitoredItems[m]);
counter++;
}
}
// istanbul ignore next
if (doDebug) {
const elapsed = (0, node_opcua_utils_1.hrtime)(start);
debugLog(`Sampler ${samplingInterval} ms : Benchmark took ${((elapsed[0] * NS_PER_SEC + elapsed[1]) /
1000 /
1000.0).toFixed(3)} milliseconds for ${counter} elements`);
}
}, samplingInterval);
timers[key] = _t;
}
(0, node_opcua_assert_1.assert)(!_t.monitoredItems[monitoredItem.monitoredItemId]);
_t.monitoredItems[monitoredItem.monitoredItemId] = monitoredItem;
_t.monitoredItemsCount++;
return key;
}
function removeFromTimer(monitoredItem) {
const samplingInterval = monitoredItem.samplingInterval;
(0, node_opcua_assert_1.assert)(samplingInterval > 0);
(0, node_opcua_assert_1.assert)(typeof monitoredItem._samplingId === "string");
const key = monitoredItem._samplingId;
const _t = timers[key];
if (!_t) {
debugLog("cannot find common timer for samplingInterval", key);
return;
}
(0, node_opcua_assert_1.assert)(_t);
(0, node_opcua_assert_1.assert)(_t.monitoredItems[monitoredItem.monitoredItemId]);
delete _t.monitoredItems[monitoredItem.monitoredItemId];
_t.monitoredItemsCount--;
(0, node_opcua_assert_1.assert)(_t.monitoredItemsCount >= 0);
if (_t.monitoredItemsCount === 0) {
if (_t._samplingId !== false) {
clearInterval(_t._samplingId);
}
delete timers[key];
}
}
//# sourceMappingURL=node_sampler.js.map