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105 changes: 105 additions & 0 deletions
105
client-base/src/main/webapp/html/javascript/web-cache-new.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,105 @@ | ||
| /** | ||
| * Manages the caching for web requests, with a specific new entry handler that | ||
| * make URL calls and deals with possible errors. | ||
| * | ||
| * Currently, we're only using the subclass EvidenceAccessionCache in openGeneListPopup()/evidence-table.js | ||
| * | ||
| */ | ||
| class WebCacheWrapper | ||
| { | ||
| #cacheName = null | ||
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| constructor ( cacheName ) { | ||
| this.#cacheName = cacheName | ||
| } | ||
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| /** | ||
| * Entry getter that uses the cache-through approach, ie, if the entry is already cached, | ||
| * returns it, if not, uses #apiHandler() to get data, caches the result and then return them. | ||
| * | ||
| * This is the main method to access the cache, it is used like: | ||
| * | ||
| * let data = cacheWrapper.get ( "http://foo.url?param=" + param ) // options can be omitted | ||
| * let data = cacheWrapper.get ( "http://foo.url?param=" + param, { timeout: 1000 } ) | ||
| * | ||
| * <use data> | ||
| * | ||
| * ==> Note that, due to the cache-through behaviour, you DO NOT need to call the URL yourself, | ||
| * cause the method already takes care of that if the call output isn't already in the cache, | ||
| * and you should assume some data always come out of this method (else, there's an error, or | ||
| * there might be an empty result). | ||
| * | ||
| */ | ||
| async get ( requestUrl, options = { data: '', timeout: 100000 } ) | ||
| { | ||
| let result = await caches.match ( request, options ) | ||
| if ( result ) return result.json () | ||
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| result = await this._apiHandler ( requestUrl, options ); | ||
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| caches.open ( this.#cacheName ).then ( (cache) => | ||
| { | ||
| // TODO: do we need to serialize/unserialize JSON, can't we just store and return 'result'? | ||
| // | ||
| cache.put ( request, new Response ( JSON.stringify ( result ), options ) ) | ||
| }) | ||
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| return result | ||
| } | ||
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| /** | ||
| * Calls our API with the given request and options. It takes care of options and possible API call | ||
| * errors. | ||
| * | ||
| * Used by get(), when an entry isn't already cached | ||
| * | ||
| * Note that this IS NOT USED to save data in the cache, this is the job of get(). | ||
| * It's named with '_', cause it is a PROTECTED method and MUST NOT call it outside of | ||
| * its class or its extensions. | ||
| * | ||
| */ | ||
| async _apiHandler ( requestUrl, options ) | ||
| { | ||
| try { | ||
| const result = await $.get( { url:requestUrl, ...options } ) | ||
| return result | ||
| } | ||
| catch ( err ) | ||
| { | ||
| // TODO: report the error | ||
| jboxNotice ( 'An error occured, kindly try again', 'red', 300, 2000 ); | ||
| return null | ||
| } | ||
| } | ||
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| } | ||
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| /** | ||
| * Extended class caters solely for AccessionTable Popup, called in evidence-table(openGeneListPopup()) | ||
| * | ||
| */ | ||
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| class EvidenceAccessionCache extends WebCacheWrapper | ||
| { | ||
| async get ( conceptId ) | ||
| { | ||
| return super.get ( | ||
| api_url + '/genome?keyword=ConceptID:' + conceptId, | ||
| { data: '', timeout: 100000, headers: { 'Content-Type': 'text/plain' } } | ||
| ) | ||
| } | ||
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| async _apiHandler ( requestUrl, options ) | ||
| { | ||
| let result = await super._apiHandler ( requestUrl, options ) | ||
| if ( !result ) return result | ||
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| // TODO: WILL BE REMOVED IN COMING DAYS | ||
| let geneTable = formatJsonToTsv(response.geneTable) | ||
| geneTable = geneTable.split("\n") | ||
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| return geneTable | ||
| } | ||
| } |
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