| /** |
| * 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.ambari.metrics.adservice.db |
| |
| import org.apache.ambari.metrics.adservice.metadata.MetricSourceDefinition |
| import org.apache.commons.lang.SerializationUtils |
| |
| import com.google.inject.Inject |
| |
| /** |
| * Implementation of the AdMetadataStoreAccessor. |
| * Serves as the adaptor between metric definition service and LevelDB worlds. |
| */ |
| class AdMetadataStoreAccessorImpl extends AdMetadataStoreAccessor { |
| |
| @Inject |
| var metadataDataSource: MetadataDatasource = _ |
| |
| @Inject |
| def this(metadataDataSource: MetadataDatasource) = { |
| this |
| this.metadataDataSource = metadataDataSource |
| } |
| |
| /** |
| * Return all saved component definitions from DB. |
| * |
| * @return |
| */ |
| override def getSavedInputDefinitions: List[MetricSourceDefinition] = { |
| val valuesFromStore : List[MetadataDatasource#Value] = metadataDataSource.getAll |
| val definitions = scala.collection.mutable.MutableList.empty[MetricSourceDefinition] |
| |
| for (value : Array[Byte] <- valuesFromStore) { |
| val definition : MetricSourceDefinition = SerializationUtils.deserialize(value).asInstanceOf[MetricSourceDefinition] |
| if (definition != null) { |
| definitions.+=(definition) |
| } |
| } |
| definitions.toList |
| } |
| |
| /** |
| * Save a set of component definitions |
| * |
| * @param metricSourceDefinitions Set of component definitions |
| * @return Success / Failure |
| */ |
| override def saveInputDefinitions(metricSourceDefinitions: List[MetricSourceDefinition]): Boolean = { |
| for (definition <- metricSourceDefinitions) { |
| saveInputDefinition(definition) |
| } |
| true |
| } |
| |
| /** |
| * Save a component definition |
| * |
| * @param metricSourceDefinition component definition |
| * @return Success / Failure |
| */ |
| override def saveInputDefinition(metricSourceDefinition: MetricSourceDefinition): Boolean = { |
| val storeValue : MetadataDatasource#Value = SerializationUtils.serialize(metricSourceDefinition) |
| val storeKey : MetadataDatasource#Key = metricSourceDefinition.definitionName.getBytes() |
| metadataDataSource.put(storeKey, storeValue) |
| true |
| } |
| |
| /** |
| * Delete a component definition |
| * |
| * @param definitionName component definition |
| * @return |
| */ |
| override def removeInputDefinition(definitionName: String): Boolean = { |
| val storeKey : MetadataDatasource#Key = definitionName.getBytes() |
| metadataDataSource.delete(storeKey) |
| true |
| } |
| } |