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.config.ApplicationConfiguration;
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 ApplicationConfiguration config;
66 // Initialize Couchbase Connection
67 Cluster cluster = CouchbaseCluster.create(config.getCouchbaseHost());
68 cluster.authenticate(config.getCouchbaseUser(), config.getCouchbasePass());
69 bucket = cluster.openBucket(config.getCouchbaseBucket());
71 log.info("Connect to Couchbase " + config.getCouchbaseHost());
73 // Create a N1QL Primary Index (but ignore if it exists)
74 bucket.bucketManager().createN1qlPrimaryIndex(true, false);
78 public void cleanUp() {
82 public void saveJsons(Topic topic, List<JSONObject> jsons) {
83 List<JsonDocument> documents= new ArrayList<>(jsons.size());
84 for(JSONObject json : jsons) {
85 //convert to Couchbase JsonObject from org.json JSONObject
86 JsonObject jsonObject = JsonObject.fromJson(json.toString());
88 long timestamp = jsonObject.getLong("_ts");//this is Kafka time stamp, which is added in StoreService.messageToJson()
91 int expiry = (int) (timestamp/1000L) + topic.getTtl()*3600*24; //in second
93 String id = getId(topic.getId());
94 JsonDocument doc = JsonDocument.create(id, expiry, jsonObject);
97 saveDocuments(documents);
101 private String getId(String topicStr) {
102 //String id = topicStr+":"+timestamp+":"+UUID.randomUUID();
104 //https://forums.couchbase.com/t/how-to-set-an-auto-increment-id/4892/2
105 //atomically get the next sequence number:
106 // increment by 1, initialize at 0 if counter doc not found
107 //TODO how slow is this compared with above UUID approach?
108 JsonLongDocument nextIdNumber = bucket.counter(topicStr, 1, 0); //like 12345
109 String id = topicStr +":"+ nextIdNumber.content();
114 //https://docs.couchbase.com/java-sdk/2.7/document-operations.html
115 private void saveDocuments(List<JsonDocument> documents) {
118 .flatMap(new Func1<JsonDocument, Observable<JsonDocument>>() {
120 public Observable<JsonDocument> call(final JsonDocument docToInsert) {
121 return bucket.async().insert(docToInsert);