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.db;
23 import java.util.ArrayList;
24 import java.util.List;
25 import java.util.UUID;
27 import javax.annotation.PostConstruct;
28 import javax.annotation.PreDestroy;
30 import org.json.JSONObject;
31 import org.onap.datalake.feeder.config.ApplicationConfiguration;
32 import org.onap.datalake.feeder.domain.Db;
33 import org.onap.datalake.feeder.domain.EffectiveTopic;
34 import org.onap.datalake.feeder.domain.Topic;
35 import org.slf4j.Logger;
36 import org.slf4j.LoggerFactory;
37 import org.springframework.beans.factory.annotation.Autowired;
38 import org.springframework.context.annotation.Scope;
39 import org.springframework.stereotype.Service;
41 import com.couchbase.client.java.Bucket;
42 import com.couchbase.client.java.Cluster;
43 import com.couchbase.client.java.CouchbaseCluster;
44 import com.couchbase.client.java.document.JsonDocument;
45 import com.couchbase.client.java.document.json.JsonObject;
46 import com.couchbase.client.java.env.CouchbaseEnvironment;
47 import com.couchbase.client.java.env.DefaultCouchbaseEnvironment;
48 import com.couchbase.client.java.error.DocumentAlreadyExistsException;
51 import rx.functions.Func1;
54 * Service to use Couchbase
61 public class CouchbaseService implements DbStoreService {
63 private final Logger log = LoggerFactory.getLogger(this.getClass());
66 ApplicationConfiguration config;
71 public CouchbaseService(Db db) {
77 // Initialize Couchbase Connection
79 //this tunes the SDK (to customize connection timeout)
80 CouchbaseEnvironment env = DefaultCouchbaseEnvironment.builder().connectTimeout(60000) // 60s, default is 5s
82 Cluster cluster = CouchbaseCluster.create(env, couchbase.getHost());
83 cluster.authenticate(couchbase.getLogin(), couchbase.getPass());
84 bucket = cluster.openBucket(couchbase.getDatabase());
85 // Create a N1QL Primary Index (but ignore if it exists)
86 bucket.bucketManager().createN1qlPrimaryIndex(true, false);
88 log.info("Connected to Couchbase {} as {}", couchbase.getHost(), couchbase.getLogin());
90 } catch (Exception ex) {
91 log.error("error connection to Couchbase.", ex);
97 public void cleanUp() {
98 config.getShutdownLock().readLock().lock();
101 log.info("bucket.close() at cleanUp.");
104 config.getShutdownLock().readLock().unlock();
109 public void saveJsons(EffectiveTopic effectiveTopic, List<JSONObject> jsons) {
110 List<JsonDocument> documents = new ArrayList<>(jsons.size());
111 for (JSONObject json : jsons) {
112 //convert to Couchbase JsonObject from org.json JSONObject
113 JsonObject jsonObject = JsonObject.fromJson(json.toString());
115 long timestamp = jsonObject.getLong(config.getTimestampLabel());//this is Kafka time stamp, which is added in StoreService.messageToJson()
118 int expiry = (int) (timestamp / 1000L) + effectiveTopic.getTopic().getTtl() * 3600 * 24; //in second
120 String id = getId(effectiveTopic.getTopic(), json);
121 JsonDocument doc = JsonDocument.create(id, expiry, jsonObject);
125 saveDocuments(documents);
126 } catch (DocumentAlreadyExistsException e) {
127 log.error("Some or all the following ids are duplicate.");
128 for(JsonDocument document : documents) {
129 log.error("saveJsons() DocumentAlreadyExistsException {}", document.id());
131 } catch (rx.exceptions.CompositeException e) {
132 List<Throwable> causes = e.getExceptions();
133 for(Throwable cause : causes) {
134 log.error("saveJsons() CompositeException cause {}", cause.getMessage());
136 } catch (Exception e) {
137 log.error("error saving to Couchbase.", e);
139 log.debug("saved text to topic = {}, this batch count = {} ", effectiveTopic, documents.size());
142 public String getId(Topic topic, JSONObject json) {
143 //if this topic requires extract id from JSON
144 String id = topic.getMessageId(json);
149 String topicStr = topic.getName();
150 id = topicStr+":"+UUID.randomUUID();
152 //https://forums.couchbase.com/t/how-to-set-an-auto-increment-id/4892/2
153 //atomically get the next sequence number:
154 // increment by 1, initialize at 0 if counter doc not found
155 //TODO how slow is this compared with above UUID approach?
156 //sometimes this gives java.util.concurrent.TimeoutException
157 //JsonLongDocument nextIdNumber = bucket.counter(topicStr, 1, 0); //like 12345
158 //id = topicStr + ":" + nextIdNumber.content();
163 //https://docs.couchbase.com/java-sdk/2.7/document-operations.html
164 private void saveDocuments(List<JsonDocument> documents) {
165 Observable.from(documents).flatMap(new Func1<JsonDocument, Observable<JsonDocument>>() {
167 public Observable<JsonDocument> call(final JsonDocument docToInsert) {
168 return bucket.async().insert(docToInsert);
170 }).last().toBlocking().single();