static CassieqCredentials key(
final AccountName accountName, final AccountKey accountKey, final Clock requestClock) {
return request -> {
final Instant now = requestClock.now();
final SignedRequestSignatureGenerator requestParameters =
new SignedRequestSignatureGenerator(
accountName,
request.method(),
request.url().getPath(),
now.toDateTime(DateTimeZone.UTC));
final String signature =
requestParameters.computeSignature(MacProviders.HmacSha256(accountKey));
final String requestTime = SignatureGenerator.formatDateTime(now);
return request
.newBuilder()
.header("Authorization", "Signed " + signature)
.header(StandardAuthHeaders.RequestTime.getHeaderName(), requestTime)
.build();
};
}