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mango-v4-service
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leverage caching on backend by clamping to minute resolution when fetching ohlcv from off chain service 

Signed-off-by: microwavedcola1 <microwavedcola@gmail.com>
This commit is contained in:
microwavedcola1 2021-12-26 16:05:13 +01:00
parent 5c67a33cd0
commit d46743e719
1 changed files with 10 additions and 3 deletions
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13
mango-service-v3/src/markets.controller.ts
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@ -366,7 +366,7 @@ class MarketsController implements Controller {
const fromEpochS = Number(request.query.start_time);
const toEpochS = Number(request.query.end_time);
await getOhlcv(marketName, resolution, fromEpochS, toEpochS)
await getOhlcv(marketName, resolution, fromEpochS, toEpochS, false)
.then(({ t, o, h, l, c, v }) => {
const ohlcvDtos: OhlcvDto[] = [];
for (let i = 0; i < t.length; i++) {
@ -443,11 +443,18 @@ async function getOhlcv(
market: string,
resolution: string,
fromS: number,
toS: number
toS: number,
forceMinimumMinuteResolution: boolean = true
) {
// to leverage caching on backend,
// and not spam with requests having ms resolution,
// force minimum resolution to a minute
if (forceMinimumMinuteResolution) {
fromS = Math.floor(fromS / 60) * 60;
toS = Math.floor(toS / 60) * 60;
}
const fromSFixed = fromS.toFixed();
const toSFixed = toS.toFixed();
const historyResponse = await fetch(
`https://serum-history.herokuapp.com/tv/history` +
`?symbol=${market}&resolution=${resolution}&from=${fromSFixed}&to=${toSFixed}`