Function makeCacheKey

packages/common/http/src/transfer_cache.ts:410–431

(
  request: HttpRequest<any>,
  mappedRequestUrl: string,
)

}

function makeCacheKey(
  request: HttpRequest<any>,
  mappedRequestUrl: string,
): StateKey<TransferHttpResponse> {
  const {params, method, responseType} = request;
  const encodedParams = sortAndConcatParams(params);

  let serializedBody = request.serializeBody();
  if (serializedBody instanceof URLSearchParams) {
    serializedBody = sortAndConcatParams(serializedBody);
  } else if (typeof serializedBody !== 'string') {
    serializedBody = '';
  }

  // Joining with `|` lets a shifted field boundary (url `/a` + body `b|c` vs url `/a|b` + body `c`)
  // collapse to the same string and thus the same hash. `\0` cannot occur in a valid url or in
  // encoded params, so the field boundaries can't be forged by field content.
  const key = [method, responseType, mappedRequestUrl, serializedBody, encodedParams].join('\0');
  const hash = generateHash(key);

  return makeStateKey(hash);
}

function toBase64(buffer: unknown): string {
  //TODO: replace with when is Baseline widely available