| /** |
| * 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.metron.indexing.dao.update; |
| |
| import org.apache.metron.indexing.dao.RetrieveLatestDao; |
| |
| import java.io.IOException; |
| import java.util.Map; |
| import java.util.Optional; |
| |
| import static java.lang.String.format; |
| |
| public interface UpdateDao { |
| |
| /** |
| * Update a given Document and optionally the index where the document exists. This is a full |
| * update, meaning the current document will be replaced if it exists or a new document will be |
| * created if it does not exist. Partial updates are not supported in this method. |
| * |
| * @param update The document to replace from the index. |
| * @param index The index where the document lives. |
| * @return The updated document |
| * @throws IOException If an error occurs during the update. |
| */ |
| Document update(Document update, Optional<String> index) throws IOException; |
| |
| /** |
| * Similar to the update method but accepts multiple documents and performs updates in batch. |
| * |
| * @param updates A map of the documents to update to the index where they live. |
| * @return The updated documents. |
| * @throws IOException If an error occurs during the updates. |
| */ |
| Map<Document, Optional<String>> batchUpdate(Map<Document, Optional<String>> updates) throws IOException; |
| |
| Document addCommentToAlert(CommentAddRemoveRequest request) throws IOException; |
| |
| Document removeCommentFromAlert(CommentAddRemoveRequest request) throws IOException; |
| |
| Document addCommentToAlert(CommentAddRemoveRequest request, Document latest) throws IOException; |
| |
| Document removeCommentFromAlert(CommentAddRemoveRequest request, Document latest) throws IOException; |
| |
| /** |
| * Update a document in an index given a JSON Patch (see RFC 6902 at |
| * https://tools.ietf.org/html/rfc6902) |
| * @param request The patch request |
| * @param timestamp Optionally a timestamp to set. If not specified then current time is used. |
| * @return The patched document. |
| * @throws OriginalNotFoundException If the original is not found, then it cannot be patched. |
| * @throws IOException If an error occurs while patching. |
| */ |
| default Document patch(RetrieveLatestDao retrieveLatestDao, PatchRequest request |
| , Optional<Long> timestamp |
| ) throws OriginalNotFoundException, IOException { |
| Document d = getPatchedDocument(retrieveLatestDao, request, timestamp); |
| return update(d, Optional.ofNullable(request.getIndex())); |
| } |
| |
| default Document getPatchedDocument(RetrieveLatestDao retrieveLatestDao, PatchRequest request, |
| Optional<Long> optionalTimestamp |
| ) throws OriginalNotFoundException, IOException { |
| String guid = request.getGuid(); |
| String sensorType = request.getSensorType(); |
| String documentID = null; |
| Long timestamp = optionalTimestamp.orElse(System.currentTimeMillis()); |
| |
| Map<String, Object> originalSource = request.getSource(); |
| if (originalSource == null) { |
| // no document source provided, lookup the latest |
| Document toPatch = retrieveLatestDao.getLatest(guid, sensorType); |
| if(toPatch != null && toPatch.getDocument() != null) { |
| originalSource = toPatch.getDocument(); |
| documentID = toPatch.getDocumentID().orElse(null); |
| |
| } else { |
| String error = format("Document does not exist, but is required; guid=%s, sensorType=%s", guid, sensorType); |
| throw new OriginalNotFoundException(error); |
| } |
| } |
| |
| Map<String, Object> patchedSource = PatchUtils.INSTANCE.applyPatch(request.getPatch(), originalSource); |
| return new Document(patchedSource, guid, sensorType, timestamp, documentID); |
| } |
| } |