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.Db;
32 import org.onap.datalake.feeder.domain.Topic;
33 import org.slf4j.Logger;
34 import org.slf4j.LoggerFactory;
36 import org.springframework.beans.factory.annotation.Autowired;
37 import org.springframework.stereotype.Service;
39 import com.couchbase.client.java.Bucket;
40 import com.couchbase.client.java.Cluster;
41 import com.couchbase.client.java.CouchbaseCluster;
42 import com.couchbase.client.java.document.JsonDocument;
43 import com.couchbase.client.java.document.JsonLongDocument;
44 import com.couchbase.client.java.document.json.JsonObject;
47 import rx.functions.Func1;
50 * Service to use Couchbase
56 public class CouchbaseService {
58 private final Logger log = LoggerFactory.getLogger(this.getClass());
61 ApplicationConfiguration config;
64 private DbService dbService;
67 private boolean isReady = false;
71 // Initialize Couchbase Connection
73 Db couchbase = dbService.getCouchbase();
74 Cluster cluster = CouchbaseCluster.create(couchbase.getHost());
75 cluster.authenticate(couchbase.getLogin(), couchbase.getPass());
76 bucket = cluster.openBucket(couchbase.getDatabase());
77 log.info("Connect to Couchbase {}", couchbase.getHost());
78 // Create a N1QL Primary Index (but ignore if it exists)
79 bucket.bucketManager().createN1qlPrimaryIndex(true, false);
89 public void cleanUp() {
93 public void saveJsons(Topic topic, List<JSONObject> jsons) {
94 List<JsonDocument> documents= new ArrayList<>(jsons.size());
95 for(JSONObject json : jsons) {
96 //convert to Couchbase JsonObject from org.json JSONObject
97 JsonObject jsonObject = JsonObject.fromJson(json.toString());
99 long timestamp = jsonObject.getLong(config.getTimestampLabel());//this is Kafka time stamp, which is added in StoreService.messageToJson()
102 int expiry = (int) (timestamp/1000L) + topic.getTtl()*3600*24; //in second
104 String id = getId(topic, json);
105 JsonDocument doc = JsonDocument.create(id, expiry, jsonObject);
108 saveDocuments(documents);
109 log.debug("saved text to topic = {}, this batch count = {} ", topic, documents.size());
112 public String getId(Topic topic, JSONObject json) {
113 //if this topic requires extract id from JSON
114 String id = topic.getMessageId(json);
119 String topicStr= topic.getName();
120 //String id = topicStr+":"+timestamp+":"+UUID.randomUUID();
122 //https://forums.couchbase.com/t/how-to-set-an-auto-increment-id/4892/2
123 //atomically get the next sequence number:
124 // increment by 1, initialize at 0 if counter doc not found
125 //TODO how slow is this compared with above UUID approach?
126 JsonLongDocument nextIdNumber = bucket.counter(topicStr, 1, 0); //like 12345
127 id = topicStr +":"+ nextIdNumber.content();
132 //https://docs.couchbase.com/java-sdk/2.7/document-operations.html
133 private void saveDocuments(List<JsonDocument> documents) {
136 .flatMap(new Func1<JsonDocument, Observable<JsonDocument>>() {
138 public Observable<JsonDocument> call(final JsonDocument docToInsert) {
139 return bucket.async().insert(docToInsert);