39 lines
902 B
JavaScript
39 lines
902 B
JavaScript
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let fetchType;
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let fetchInterval;
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let fetchURL;
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onmessage = function(e) {
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let msgType = e.data.msgType;
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fetchType = e.data.fetchType;
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fetchURL = e.data.fetchURL;
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fetchInterval = 1000 * e.data.fetchInterval;
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console.log("Configiuration Message:");
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console.log(' Fetch type: ' + fetchType);
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console.log(' Using fetch url: ' + fetchURL);
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console.log(' Fetching data each [ms]: ' + fetchInterval);
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};
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function doFetch() {
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let now = new Date();
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if (fetchURL) {
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fetch(fetchURL).then(
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b => b.json()).then(
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j => postMessage({msgType: fetchType,
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json: j,
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timestamp: now}))
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.catch(e => console.log(e.message));
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}
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}
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// Periodic resource fetching
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(function periodicFetch() {
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doFetch();
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setTimeout(periodicFetch, fetchInterval);
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})();
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