49 lines
1.5 KiB
JavaScript
49 lines
1.5 KiB
JavaScript
'use strict';
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// - Reports stats about:
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// * Total number of renderers
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// * For mapnik renderers:
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// - the mapnik-pool status: count, unused and waiting
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// - the internally cached objects: png and grid
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function RendererStatsReporter (rendererCache, statsInterval) {
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this.rendererCache = rendererCache;
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this.statsInterval = statsInterval || 6e4;
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this.renderersStatsIntervalId = null;
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}
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module.exports = RendererStatsReporter;
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RendererStatsReporter.prototype.start = function () {
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this.renderersStatsIntervalId = setInterval(() => {
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const rendererStats = this.rendererCache.getStats();
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for (let [stat, value] of rendererStats) {
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if (stat === 'rendercache.count') {
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global.statsClient.gauge(`windshaft.${stat}`, value);
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} else {
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global.statsClient.gauge(`windshaft.mapnik-${stat}`, value);
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}
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}
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}, this.statsInterval);
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this.rendererCache.on('err', rendererCacheErrorListener);
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this.rendererCache.on('gc', gcTimingListener);
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};
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function rendererCacheErrorListener () {
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global.statsClient.increment('windshaft.rendercache.error');
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}
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function gcTimingListener (gcTime) {
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global.statsClient.timing('windshaft.rendercache.gc', gcTime);
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}
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RendererStatsReporter.prototype.stop = function () {
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this.rendererCache.removeListener('err', rendererCacheErrorListener);
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this.rendererCache.removeListener('gc', gcTimingListener);
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clearInterval(this.renderersStatsIntervalId);
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this.renderersStatsIntervalId = null;
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};
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