2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright 2019 China Mobile
6 *=================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
21 package org.onap.datalake.feeder.service;
23 import java.util.ArrayList;
24 import java.util.List;
26 import javax.annotation.PostConstruct;
27 import javax.annotation.PreDestroy;
29 import org.json.JSONObject;
30 import org.onap.datalake.feeder.domain.Db;
31 import org.onap.datalake.feeder.domain.Topic;
32 import org.slf4j.Logger;
33 import org.slf4j.LoggerFactory;
35 import org.springframework.beans.factory.annotation.Autowired;
36 import org.springframework.stereotype.Service;
38 import com.couchbase.client.java.Bucket;
39 import com.couchbase.client.java.Cluster;
40 import com.couchbase.client.java.CouchbaseCluster;
41 import com.couchbase.client.java.document.JsonDocument;
42 import com.couchbase.client.java.document.JsonLongDocument;
43 import com.couchbase.client.java.document.json.JsonObject;
46 import rx.functions.Func1;
49 * Service to use Couchbase
55 public class CouchbaseService {
57 private final Logger log = LoggerFactory.getLogger(this.getClass());
60 private DbService dbService;
63 private boolean isReady = false;
67 // Initialize Couchbase Connection
69 Db couchbase = dbService.getCouchbase();
70 Cluster cluster = CouchbaseCluster.create(couchbase.getHost());
71 cluster.authenticate(couchbase.getLogin(), couchbase.getPass());
72 bucket = cluster.openBucket(couchbase.getDatabase());
73 log.info("Connect to Couchbase {}", couchbase.getHost());
74 // Create a N1QL Primary Index (but ignore if it exists)
75 bucket.bucketManager().createN1qlPrimaryIndex(true, false);
85 public void cleanUp() {
89 public void saveJsons(Topic topic, List<JSONObject> jsons) {
90 List<JsonDocument> documents= new ArrayList<>(jsons.size());
91 for(JSONObject json : jsons) {
92 //convert to Couchbase JsonObject from org.json JSONObject
93 JsonObject jsonObject = JsonObject.fromJson(json.toString());
95 long timestamp = jsonObject.getLong("_ts");//this is Kafka time stamp, which is added in StoreService.messageToJson()
98 int expiry = (int) (timestamp/1000L) + topic.getTtl()*3600*24; //in second
100 String id = getId(topic, json);
101 JsonDocument doc = JsonDocument.create(id, expiry, jsonObject);
104 saveDocuments(documents);
107 public String getId(Topic topic, JSONObject json) {
108 //if this topic requires extract id from JSON
109 String id = topic.getMessageId(json);
114 String topicStr= topic.getName();
115 //String id = topicStr+":"+timestamp+":"+UUID.randomUUID();
117 //https://forums.couchbase.com/t/how-to-set-an-auto-increment-id/4892/2
118 //atomically get the next sequence number:
119 // increment by 1, initialize at 0 if counter doc not found
120 //TODO how slow is this compared with above UUID approach?
121 JsonLongDocument nextIdNumber = bucket.counter(topicStr, 1, 0); //like 12345
122 id = topicStr +":"+ nextIdNumber.content();
127 //https://docs.couchbase.com/java-sdk/2.7/document-operations.html
128 private void saveDocuments(List<JsonDocument> documents) {
131 .flatMap(new Func1<JsonDocument, Observable<JsonDocument>>() {
133 public Observable<JsonDocument> call(final JsonDocument docToInsert) {
134 return bucket.async().insert(docToInsert);