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.onap.datalake.feeder.dto.TopicConfig;
34 import org.slf4j.Logger;
35 import org.slf4j.LoggerFactory;
37 import org.springframework.beans.factory.annotation.Autowired;
38 import org.springframework.stereotype.Service;
40 import com.couchbase.client.java.Bucket;
41 import com.couchbase.client.java.Cluster;
42 import com.couchbase.client.java.CouchbaseCluster;
43 import com.couchbase.client.java.document.JsonDocument;
44 import com.couchbase.client.java.document.JsonLongDocument;
45 import com.couchbase.client.java.document.json.JsonObject;
48 import rx.functions.Func1;
51 * Service to use Couchbase
57 public class CouchbaseService {
59 private final Logger log = LoggerFactory.getLogger(this.getClass());
62 ApplicationConfiguration config;
65 private DbService dbService;
68 private boolean isReady = false;
72 // Initialize Couchbase Connection
74 Db couchbase = dbService.getCouchbase();
75 Cluster cluster = CouchbaseCluster.create(couchbase.getHost());
76 cluster.authenticate(couchbase.getLogin(), couchbase.getPass());
77 bucket = cluster.openBucket(couchbase.getDatabase());
78 log.info("Connect to Couchbase {}", couchbase.getHost());
79 // Create a N1QL Primary Index (but ignore if it exists)
80 bucket.bucketManager().createN1qlPrimaryIndex(true, false);
90 public void cleanUp() {
94 public void saveJsons(TopicConfig topic, List<JSONObject> jsons) {
95 List<JsonDocument> documents= new ArrayList<>(jsons.size());
96 for(JSONObject json : jsons) {
97 //convert to Couchbase JsonObject from org.json JSONObject
98 JsonObject jsonObject = JsonObject.fromJson(json.toString());
100 long timestamp = jsonObject.getLong(config.getTimestampLabel());//this is Kafka time stamp, which is added in StoreService.messageToJson()
103 int expiry = (int) (timestamp/1000L) + topic.getTtl()*3600*24; //in second
105 String id = getId(topic, json);
106 JsonDocument doc = JsonDocument.create(id, expiry, jsonObject);
110 saveDocuments(documents);
111 }catch(Exception e) {
112 log.error("error saving to Couchbase.", e);
114 log.debug("saved text to topic = {}, this batch count = {} ", topic, documents.size());
117 public String getId(TopicConfig topic, JSONObject json) {
118 //if this topic requires extract id from JSON
119 String id = topic.getMessageId(json);
124 String topicStr= topic.getName();
125 //String id = topicStr+":"+timestamp+":"+UUID.randomUUID();
127 //https://forums.couchbase.com/t/how-to-set-an-auto-increment-id/4892/2
128 //atomically get the next sequence number:
129 // increment by 1, initialize at 0 if counter doc not found
130 //TODO how slow is this compared with above UUID approach?
131 JsonLongDocument nextIdNumber = bucket.counter(topicStr, 1, 0); //like 12345
132 id = topicStr +":"+ nextIdNumber.content();
137 //https://docs.couchbase.com/java-sdk/2.7/document-operations.html
138 private void saveDocuments(List<JsonDocument> documents) {
141 .flatMap(new Func1<JsonDocument, Observable<JsonDocument>>() {
143 public Observable<JsonDocument> call(final JsonDocument docToInsert) {
144 return bucket.async().insert(docToInsert);