/**
* Creates the underlying backend policies.
*
* <p>NOTE: if the creation of the underlying policies fails, any successfully created underlying
* policies will be attempted to be deleted but if the deletion fails, then the underlying
* policies may be in an inconsistent state.
*
* @param context The request context.
* @param policies The underlying policies to create.
* @return A promise containing the list of created underlying policies or a {@code
* ResourceException} if the creation fails.
*/
public Promise<List<Resource>, ResourceException> createPolicies(
ServerContext context, Set<JsonValue> policies) {
final List<String> policyIds = new ArrayList<String>();
List<Promise<Resource, ResourceException>> promises =
new ArrayList<Promise<Resource, ResourceException>>();
for (JsonValue policy : policies) {
promises.add(
policyResource
.handleCreate(context, Requests.newCreateRequest("", policy))
.thenOnResult(
new ResultHandler<Resource>() {
@Override
public void handleResult(Resource result) {
// Save ids of created policies, in case a latter policy fails to be created,
// so we can roll back.
policyIds.add(result.getId());
}
}));
}
return Promises.when(promises)
.thenAsync(
new AsyncFunction<List<Resource>, List<Resource>, ResourceException>() {
@Override
public Promise<List<Resource>, ResourceException> apply(List<Resource> value) {
return Promises.newResultPromise(value);
}
},
new UmaPolicyCreateFailureHandler(context, policyIds));
}
/**
* Deletes the underlying backend policies.
*
* <p>NOTE: if the deletion of the underlying policies fails, the underlying policies may be in an
* inconsistent state.
*
* @param context The request context.
* @param policyIds The list of ids of the underlying backend policies to delete.
* @return A promise containing the list of underlying policies that were deleted or a {@code
* ResourceException} if the policies were failed to be deleted.
*/
public Promise<List<Resource>, ResourceException> deletePolicies(
ServerContext context, Collection<String> policyIds) {
List<Promise<Resource, ResourceException>> promises =
new ArrayList<Promise<Resource, ResourceException>>();
for (String policyId : policyIds) {
promises.add(policyResource.handleDelete(context, Requests.newDeleteRequest(policyId)));
}
return Promises.when(promises);
}
/**
* Updates the underlying backend policies.
*
* <p>NOTE: if the update of the underlying policies fails, the underlying policies may be in an
* inconsistent state.
*
* @param context The request context.
* @param policies The updated underlying policies to update.
* @return A promise containing the list of updated underlying policies or a {@code
* ResourceException} if the update failed.
*/
public Promise<List<Resource>, ResourceException> updatePolicies(
ServerContext context, Set<JsonValue> policies) {
List<Promise<Resource, ResourceException>> promises =
new ArrayList<Promise<Resource, ResourceException>>();
for (JsonValue policy : policies) {
String policyName = policy.get("name").asString();
promises.add(
policyResource.handleUpdate(context, Requests.newUpdateRequest(policyName, policy)));
}
return Promises.when(promises);
}
/**
* Queries the underlying backend policies.
*
* @param context The request context.
* @param request The query request to execute on the backend policies.
* @param resultHandler The handler for results.
* @return A promise contain the {@code QueryResult} and list of underlying policies or a {@code
* ResourceException} if the query failed.
*/
public Promise<QueryResult, ResourceException> queryPolicies(
ServerContext context, QueryRequest request, QueryResultHandler resultHandler) {
return policyResource.handleQuery(context, request, resultHandler);
}
/**
* Queries the underlying backend policies.
*
* @param context The request context.
* @param request The query request to execute on the backend policies.
* @return A promise contain the {@code QueryResult} and list of underlying policies or a {@code
* ResourceException} if the query failed.
*/
public Promise<Pair<QueryResult, List<Resource>>, ResourceException> queryPolicies(
ServerContext context, QueryRequest request) {
return policyResource.handleQuery(context, request);
}