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feat(WIP backends): add multiple backends
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,109 @@ | ||
| import { buildLibrary, buildMeasure } from "../helpers/cql-measure"; | ||
| import { responseStore } from "../stores/response"; | ||
| import type { Site } from "../types/response"; | ||
| import { measureStore } from "../stores/measures"; | ||
|
|
||
| let measureDefinitions; | ||
|
|
||
| measureStore.subscribe((store) => { | ||
| measureDefinitions = store.map((measure) => measure.measure); | ||
| }); | ||
|
|
||
| export class Blaze { | ||
| constructor( | ||
| private url: URL, | ||
| private name: string, | ||
| private auth: string = "", | ||
| ) {} | ||
|
|
||
| /** | ||
| * sends the query to beam and updates the store with the results | ||
| * @param cql the query as cql string | ||
| * @param controller the abort controller to cancel the request | ||
| */ | ||
| async send(cql: string, controller?: AbortController): Promise<void> { | ||
| try { | ||
| responseStore.update((store) => { | ||
| store.set(this.name, { status: "claimed", data: null }); | ||
| return store; | ||
| }); | ||
| const libraryResponse = await fetch( | ||
| new URL(`${this.url}/Library`), | ||
| { | ||
| method: "POST", | ||
| headers: { | ||
| "Content-Type": "application/json", | ||
| }, | ||
| body: JSON.stringify(buildLibrary(cql)), | ||
| signal: controller?.signal, | ||
| }, | ||
| ); | ||
| if (!libraryResponse.ok) { | ||
| this.handleError( | ||
| `Couldn't create Library in Blaze`, | ||
| libraryResponse, | ||
| ); | ||
| } | ||
| const library = await libraryResponse.json(); | ||
| const measureResponse = await fetch( | ||
| new URL(`${this.url}/Measure`), | ||
| { | ||
| method: "POST", | ||
| headers: { | ||
| "Content-Type": "application/json", | ||
| }, | ||
| body: JSON.stringify( | ||
| buildMeasure(library.url, measureDefinitions), | ||
| ), | ||
| signal: controller.signal, | ||
| }, | ||
| ); | ||
| if (!measureResponse.ok) { | ||
| this.handleError( | ||
| `Couldn't create Measure in Blaze`, | ||
| measureResponse, | ||
| ); | ||
| } | ||
| const measure = await measureResponse.json(); | ||
| const dataResponse = await fetch( | ||
| new URL( | ||
| `${this.url}/Measure/$evaluate-measure?measure=${measure.url}&periodStart=2000&periodEnd=2030`, | ||
| ), | ||
| { | ||
| signal: controller.signal, | ||
| }, | ||
| ); | ||
| if (!dataResponse.ok) { | ||
| this.handleError( | ||
| `Couldn't evaluate Measure in Blaze`, | ||
| dataResponse, | ||
| ); | ||
| } | ||
| const blazeResponse: Site = await dataResponse.json(); | ||
| responseStore.update((store) => { | ||
| store.set(this.name, { | ||
| status: "succeeded", | ||
| data: blazeResponse, | ||
| }); | ||
| return store; | ||
| }); | ||
| } catch (err) { | ||
| if (err.name === "AbortError") { | ||
| console.log(`Aborting former blaze request.`); | ||
| } else { | ||
| console.error(err); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| async handleError(message: string, response: Response): Promise<void> { | ||
| const errorMessage = await response.text(); | ||
| console.debug( | ||
| `${message}. Received error ${response.status} with message ${errorMessage}`, | ||
| ); | ||
| responseStore.update((store) => { | ||
| store.set(this.name, { status: "permfailed", data: null }); | ||
| return store; | ||
| }); | ||
| } | ||
| } |
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