50 lines
1.2 KiB
JavaScript
50 lines
1.2 KiB
JavaScript
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onmessage = function (event) {
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handleMessage(event.data);
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}
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// message = {type: '', task_id: '', [key: string]: any}
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function handleMessage(message) {
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// console.log("new task from master " + JSON.stringify(message));
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let type = message['type'];
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if(type === 'fetch'){
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fetchUrl(message.url).then(function (res) {
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postMessage({
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type: 'fetch',
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task_id: message.task_id,
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info: JSON.parse(res),
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})
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});
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return;
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}
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}
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function processDelay(timeout) {
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setTimeout(function () {
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postMessage({
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type: 'delay',
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info: 'Its done! ' + timeout,
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})
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}, timeout)
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}
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function fetchUrl(request_url) {
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return new Promise(function (resolve, reject) {
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let xhr = new XMLHttpRequest();
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xhr.open('GET', request_url, true);
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xhr.onload = function () {
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if (xhr.status >= 200 && xhr.status < 300) {
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resolve(xhr.response);
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} else {
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reject('error');
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}
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};
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xhr.onerror = function () {
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reject('error');
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};
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xhr.send();
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});
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}
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