| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.nifi.web.api.concurrent; |
| |
| import org.apache.nifi.authorization.user.NiFiUser; |
| |
| import java.util.Date; |
| import java.util.List; |
| |
| public interface AsynchronousWebRequest<R, T> { |
| |
| /** |
| * @return the ID of the component that the request is for |
| */ |
| String getComponentId(); |
| |
| /** |
| * @return whether or not this request has completed |
| */ |
| boolean isComplete(); |
| |
| /** |
| * @return the Date at which the status of this request was last updated |
| */ |
| Date getLastUpdated(); |
| |
| List<UpdateStep> getUpdateSteps(); |
| |
| UpdateStep getCurrentStep(); |
| |
| void markStepComplete(); |
| |
| void markStepComplete(T results); |
| |
| String getState(); |
| |
| R getRequest(); |
| |
| /** |
| * @return the current percent complete, between 0 and 100 (inclusive) |
| */ |
| int getPercentComplete(); |
| |
| /** |
| * @return the user who submitted the request |
| */ |
| NiFiUser getUser(); |
| |
| /** |
| * Updates the request to indicate the reason that the request failed |
| * |
| * @param explanation the reason that the request failed |
| */ |
| void fail(String explanation); |
| |
| /** |
| * Indicates the reason that the request failed, or <code>null</code> if the request has not failed |
| * |
| * @return the reason that the request failed, or <code>null</code> if the request has not failed |
| */ |
| String getFailureReason(); |
| |
| /** |
| * Returns the results of the request, if it completed successfully, or <code>null</code> if the request either has no completed or failed |
| * |
| * @return the results of the request, if it completed successfully, or <code>null</code> if the request either has no completed or failed |
| */ |
| T getResults(); |
| |
| /** |
| * Cancels the request so that no more steps can be completed |
| */ |
| void cancel(); |
| |
| /** |
| * @return <code>true</code> if the request has been canceled, <code>false</code> otherwise |
| */ |
| boolean isCancelled(); |
| |
| /** |
| * Sets the cancel callback to the given runnable, so that if {@link #cancel()} is called, the given {@link Runnable} will be triggered. |
| * If <code>null</code> is passed, no operation will be triggered when the task is cancelled. |
| * |
| * @param runnable the callback |
| */ |
| void setCancelCallback(Runnable runnable); |
| } |