jiangpengcheng commented on a change in pull request #4963: URL: https://github.com/apache/openwhisk/pull/4963#discussion_r614507369
########## File path: common/scala/src/main/scala/org/apache/openwhisk/core/database/mongodb/MongoDBArtifactStore.scala ########## @@ -0,0 +1,661 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.openwhisk.core.database.mongodb + +import java.security.MessageDigest + +import akka.actor.ActorSystem +import akka.event.Logging.ErrorLevel +import akka.http.scaladsl.model._ +import akka.stream.ActorMaterializer +import akka.stream.scaladsl._ +import akka.util.ByteString +import com.mongodb.client.gridfs.model.GridFSUploadOptions +import org.apache.openwhisk.common.{Logging, LoggingMarkers, TransactionId} +import org.apache.openwhisk.core.database._ +import org.apache.openwhisk.core.database.StoreUtils._ +import org.apache.openwhisk.core.entity.Attachments.Attached +import org.apache.openwhisk.core.entity.{DocId, DocInfo, DocRevision, DocumentReader, UUID} +import org.apache.openwhisk.http.Messages +import org.bson.json.{JsonMode, JsonWriterSettings} +import org.mongodb.scala.bson.BsonString +import org.mongodb.scala.bson.collection.immutable.Document +import org.mongodb.scala.gridfs.{GridFSBucket, GridFSFile, MongoGridFSException} +import org.mongodb.scala.model._ +import org.mongodb.scala.{MongoClient, MongoCollection, MongoException} +import spray.json._ + +import scala.concurrent.Future +import scala.util.Try + +object MongoDBArtifactStore { + val _computed = "_computed" +} + +/** + * Basic client to put and delete artifacts in a data store. + * + * @param client the mongodb client to access database + * @param dbName the name of the database to operate on + * @param collName the name of the collection to operate on + * @param documentHandler helper class help to simulate the designDoc of CouchDB + * @param viewMapper helper class help to simulate the designDoc of CouchDB + */ +class MongoDBArtifactStore[DocumentAbstraction <: DocumentSerializer](client: MongoClient, + dbName: String, + collName: String, + documentHandler: DocumentHandler, + viewMapper: MongoDBViewMapper, + val inliningConfig: InliningConfig, + val attachmentStore: Option[AttachmentStore])( + implicit system: ActorSystem, + val logging: Logging, + jsonFormat: RootJsonFormat[DocumentAbstraction], + val materializer: ActorMaterializer, + docReader: DocumentReader) + extends ArtifactStore[DocumentAbstraction] + with DocumentProvider + with DefaultJsonProtocol + with AttachmentSupport[DocumentAbstraction] { + + import MongoDBArtifactStore._ + + protected[core] implicit val executionContext = system.dispatcher + + private val mongodbScheme = "mongodb" + val attachmentScheme: String = attachmentStore.map(_.scheme).getOrElse(mongodbScheme) + + private val database = client.getDatabase(dbName) + private val collection = getCollectionAndCreateIndexes + private val gridFSBucket = GridFSBucket(database, collName) + + private val jsonWriteSettings = JsonWriterSettings.builder().outputMode(JsonMode.RELAXED).build + + // MongoDB doesn't support using `$` as the first char of field name, so below two fields needs to be encoded first + private val fieldsNeedEncode = Seq("annotations", "parameters") + + override protected[database] def put(d: DocumentAbstraction)(implicit transid: TransactionId): Future[DocInfo] = { + val asJson = d.toDocumentRecord + + val id: String = asJson.fields.getOrElse("_id", JsString.empty).convertTo[String].trim + require(!id.isEmpty, "document id must be defined") + + val (old_rev, rev) = revisionCalculate(asJson) + val docinfoStr = s"id: $id, rev: $rev" + val start = + transid.started(this, LoggingMarkers.DATABASE_SAVE, s"[PUT] '$collName' saving document: '$docinfoStr'") + + val encodedData = encodeFields(fieldsNeedEncode, asJson) + + val data = JsObject( + encodedData.fields + (_computed -> documentHandler.computedFields(asJson)) + ("_rev" -> rev.toJson)) + + val filters = + if (rev.startsWith("1-")) { + // for new document, we should get no matched document and insert new one + // if there is a matched document, that one with no _rev filed will be replaced + // if there is a document with the same id but has an _rev field, will return en E11000(conflict) error + Filters.and(Filters.eq("_id", id), Filters.not(Filters.exists("_rev"))) + } else { + // for old document, we should find a matched document and replace it + // if no matched document find and try to insert new document, mongodb will return an E11000 error + Filters.and(Filters.eq("_id", id), Filters.eq("_rev", old_rev)) + } + + val f = + collection + .findOneAndReplace( + filters, + Document(data.compactPrint), + FindOneAndReplaceOptions().upsert(true).returnDocument(ReturnDocument.AFTER)) + .toFuture() + .map { doc => + transid.finished(this, start, s"[PUT] '$collName' completed document: '$docinfoStr', document: '$doc'") + DocInfo(DocId(id), DocRevision(rev)) + } + .recover { + case t: MongoException if t.getCode == 11000 => Review comment: ok -- This is an automated message from the Apache Git Service. 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