Examples with DefaultRule io.gravitee.am.gateway.handler.uma.policy.DefaultRule used on opensource projects

Example 1 with DefaultRule

use of io.gravitee.am.gateway.handler.uma.policy.DefaultRule in project gravitee-access-management by gravitee-io.

the class UMATokenGranter method executePolicies.

/**
 * The resource owner works with the authorization server to configure policy conditions (authorization grant rules), which the authorization server executes in the process of issuing access tokens.
 * The authorization process makes use of claims gathered from the requesting party and client in order to satisfy all operative operative policy conditions.
 * @param oAuth2Request OAuth 2.0 Token Request
 * @param client client
 * @param endUser requesting party
 * @return
 */
private Single<OAuth2Request> executePolicies(OAuth2Request oAuth2Request, Client client, User endUser) {
    List<PermissionRequest> permissionRequests = oAuth2Request.getPermissions();
    if (permissionRequests == null || permissionRequests.isEmpty()) {
        return Single.just(oAuth2Request);
    }
    List<String> resourceIds = permissionRequests.stream().map(PermissionRequest::getResourceId).collect(Collectors.toList());
    // find access policies for the given resources
    return resourceService.findAccessPoliciesByResources(resourceIds).map(accessPolicy -> {
        Rule rule = new DefaultRule(accessPolicy);
        Optional<PermissionRequest> permission = permissionRequests.stream().filter(permissionRequest -> permissionRequest.getResourceId().equals(accessPolicy.getResource())).findFirst();
        if (permission.isPresent()) {
            ((DefaultRule) rule).setMetadata(Collections.singletonMap("permissionRequest", permission.get()));
        }
        return rule;
    }).toList().flatMap(rules -> {
        // no policy registered, continue
        if (rules.isEmpty()) {
            return Single.just(oAuth2Request);
        }
        // prepare the execution context
        ExecutionContext simpleExecutionContext = new SimpleExecutionContext(oAuth2Request, oAuth2Request.getHttpResponse());
        ExecutionContext executionContext = executionContextFactory.create(simpleExecutionContext);
        executionContext.setAttribute("client", new ClientProperties(client));
        if (endUser != null) {
            executionContext.setAttribute("user", new UserProperties(endUser));
        }
        // execute the policies
        return rulesEngine.fire(rules, executionContext).toSingleDefault(oAuth2Request).onErrorResumeNext(ex -> Single.error(new InvalidGrantException("Policy conditions are not met for actual request parameters")));
    });
}