Examples with IPayloadIO io.apiman.gateway.engine.io.IPayloadIO used on opensource projects

Example 1 with IPayloadIO

use of io.apiman.gateway.engine.io.IPayloadIO in project apiman by apiman.

the class CachingResourcesPolicy method buildCacheID.

/**
 * Builds a cached request id composed by the API key followed by the HTTP
 * verb and the destination. In the case where there's no API key the ID
 * will contain ApiOrgId + ApiId + ApiVersion
 */
private static String buildCacheID(ApiRequest request, IPolicyContext context) {
    StringBuilder cacheId = new StringBuilder();
    if (request.getContract() != null) {
        cacheId.append(request.getApiKey());
    } else {
        cacheId.append(request.getApiOrgId()).append(KEY_SEPARATOR).append(request.getApiId()).append(KEY_SEPARATOR).append(request.getApiVersion());
    }
    cacheId.append(KEY_SEPARATOR).append(request.getType()).append(KEY_SEPARATOR).append(request.getDestination());
    // 'The primary cache key consists of the request method and target URI.'
    if (!request.getQueryParams().isEmpty()) {
        cacheId.append("?").append(request.getQueryParams().toQueryString());
    }
    // use hashed payload to ensure right caching of request with different bodies.
    IPayloadIO requestPayloadIO = context.getAttribute(PolicyContextKeys.REQUEST_PAYLOAD_IO, null);
    Object requestPayload = context.getAttribute(PolicyContextKeys.REQUEST_PAYLOAD, null);
    if (requestPayloadIO != null && requestPayload != null) {
        try {
            byte[] payloadBytes = requestPayloadIO.marshall(requestPayload);
            cacheId.append('_').append(DigestUtils.sha256Hex(payloadBytes));
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
    return cacheId.toString();
}