debian-mirror-gitlab/app/assets/javascripts/lib/utils/ajax_cache.js

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import axios from './axios_utils';
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import Cache from './cache';
class AjaxCache extends Cache {
constructor() {
super();
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this.pendingRequests = {};
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}
override(endpoint, data) {
this.internalStorage[endpoint] = data;
}
retrieve(endpoint, forceRetrieve) {
if (this.hasData(endpoint) && !forceRetrieve) {
return Promise.resolve(this.get(endpoint));
}
let pendingRequest = this.pendingRequests[endpoint];
if (!pendingRequest) {
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pendingRequest = axios
.get(endpoint)
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.then(({ data }) => {
this.internalStorage[endpoint] = data;
delete this.pendingRequests[endpoint];
})
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.catch((e) => {
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const error = new Error(`${endpoint}: ${e.message}`);
error.textStatus = e.message;
delete this.pendingRequests[endpoint];
throw error;
});
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this.pendingRequests[endpoint] = pendingRequest;
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}
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return pendingRequest.then(() => this.get(endpoint));
}
}
export default new AjaxCache();