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Price Service: Add support for multiple price id in vaa request (#198) 

* Add support for multiple price id in vaa request
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Ali Behjati 2022-05-04 12:30:24 +04:30 committed by GitHub
parent 5be5576f0c
commit ec7dcf7817
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1 changed files with 28 additions and 9 deletions
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37
third_party/pyth/price-service/src/rest.ts vendored
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@ -56,25 +56,44 @@ export class RestAPI {
const latestVaaBytesInputSchema: schema = {
query: Joi.object({
id: Joi.string().regex(/^[a-f0-9]{64}$/)
id: Joi.array().items(Joi.string().regex(/^[a-f0-9]{64}$/))
})
}
app.get("/latest_vaa_bytes", validate(latestVaaBytesInputSchema), (req: Request, res: Response) => {
let priceId = req.query.id as string;
let priceIds = req.query.id as string[];
let latestPriceInfo = this.priceFeedVaaInfo.getLatestPriceInfo(priceId);
// Multiple price ids might share same vaa, we use sequence number as
// key of a vaa and deduplicate using a map of seqnum to vaa bytes.
let vaaMap = new Map<number, string>();
if (latestPriceInfo === undefined) {
res.sendStatus(StatusCodes.BAD_REQUEST);
let notFoundIds: string[] = [];
for (let id of priceIds) {
let latestPriceInfo = this.priceFeedVaaInfo.getLatestPriceInfo(id);
if (latestPriceInfo === undefined) {
notFoundIds.push(id);
continue;
}
const freshness: DurationInSec = (new Date).getTime() / 1000 - latestPriceInfo.receiveTime;
this.promClient?.addApiRequestsPriceFreshness(req.path, id, freshness);
vaaMap.set(latestPriceInfo.seqNum, latestPriceInfo.vaaBytes);
}
if (notFoundIds.length > 0) {
res.status(StatusCodes.BAD_REQUEST).send(`Price Feeds with ids ${notFoundIds.join(', ')} not found`);
return;
}
const freshness: DurationInSec = (new Date).getTime() / 1000 - latestPriceInfo.receiveTime;
this.promClient?.addApiRequestsPriceFreshness(req.path, priceId, freshness);
const jsonResponse = Array.from(vaaMap.values(),
vaaBytes => Buffer.from(vaaBytes, 'binary').toString('base64')
);
res.send(latestPriceInfo.vaaBytes);
res.json(jsonResponse);
});
endpoints.push("latest_vaa_bytes?id=<price_feed_id>");
endpoints.push("latest_vaa_bytes?id[]=<price_feed_id>&id[]=<price_feed_id_2>&..");
const latestPriceFeedInputSchema: schema = {
query: Joi.object({