CachedDataProvider.java 文件源码

/**
 * Builds JWKS if necessary after 60 seconds, but only builds
 * {@value #MIN_NUMBER_OF_KEYS} at a time.
 */
@Scheduled(fixedDelay = 60000)
public void buildJwks() {

    int nCreated = 0;
    for (int i = 0; i < MAX_NUMBER_OF_KEYS; ++i) {
        final String cacheKey = String.valueOf(i);
        final JsonWebKey jwk = jwksCache.get(cacheKey, JsonWebKey.class);
        if (jwk == null && nCreated < MIN_NUMBER_OF_KEYS) {
            final RsaJsonWebKey newJwk = buildNewRsaKey();
            jwksCache.putIfAbsent(cacheKey, newJwk);
            ++nCreated;
            LOG.debug("Created new JWK kid={}", newJwk.getKeyId());
        }
    }

}