| /* |
| * 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.metadata |
| |
| import java.io.File |
| |
| import org.apache.ambari.metrics.adservice.app.ADServiceScalaModule |
| |
| import com.fasterxml.jackson.databind.ObjectMapper |
| import com.fasterxml.jackson.module.scala.experimental.ScalaObjectMapper |
| |
| object InputMetricDefinitionParser { |
| |
| def parseInputDefinitionsFromDirectory(directory: String): List[MetricSourceDefinition] = { |
| |
| if (directory == null) { |
| return List.empty[MetricSourceDefinition] |
| } |
| val mapper = new ObjectMapper() with ScalaObjectMapper |
| mapper.registerModule(new ADServiceScalaModule) |
| val metricSourceDefinitions: scala.collection.mutable.MutableList[MetricSourceDefinition] = |
| scala.collection.mutable.MutableList.empty[MetricSourceDefinition] |
| |
| for (file <- getFilesInDirectory(directory)) { |
| val source = scala.io.Source.fromFile(file) |
| val lines = try source.mkString finally source.close() |
| val definition: MetricSourceDefinition = mapper.readValue[MetricSourceDefinition](lines) |
| if (definition != null) { |
| metricSourceDefinitions.+=(definition) |
| } |
| } |
| metricSourceDefinitions.toList |
| } |
| |
| private def getFilesInDirectory(directory: String): List[File] = { |
| val dir = new File(directory) |
| if (dir.exists && dir.isDirectory) { |
| dir.listFiles.filter(_.isFile).toList |
| } else { |
| List[File]() |
| } |
| } |
| } |