ms/controllerblueprints/modules/blueprint-core/src/main/kotlin/org/onap/ccsdk/cds/controllerblueprints/core/utils/JacksonReactorUtils.kt

   1 /*
   2  *  Copyright © 2017-2018 AT&T Intellectual Property.
   3  *  Modifications Copyright © 2019 IBM.
   4  *
   5  *  Licensed under the Apache License, Version 2.0 (the "License");
   6  *  you may not use this file except in compliance with the License.
   7  *  You may obtain a copy of the License at
   8  *
   9  *      http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  *  Unless required by applicable law or agreed to in writing, software
  12  *  distributed under the License is distributed on an "AS IS" BASIS,
  13  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  *  See the License for the specific language governing permissions and
  15  *  limitations under the License.
  16  */
  17
  18 package org.onap.ccsdk.cds.controllerblueprints.core.utils
  19
  20 import org.slf4j.LoggerFactory
  21 import com.fasterxml.jackson.databind.JsonNode
  22 import kotlinx.coroutines.Dispatchers
  23 import kotlinx.coroutines.withContext
  24 import org.apache.commons.io.IOUtils
  25 import org.onap.ccsdk.cds.controllerblueprints.core.normalizedFile
  26 import java.io.File
  27 import java.nio.charset.Charset
  28
  29 class JacksonReactorUtils {
  30     companion object {
  31
  32         private val log= LoggerFactory.getLogger(this::class.toString())
  33
  34         suspend fun getContent(fileName: String): String {
  35             //log.info("Reading File($fileName)")
  36             return getContent(normalizedFile(fileName))
  37         }
  38
  39         suspend fun getContent(file: File): String  = withContext(Dispatchers.IO) {
  40             // log.info("Reading File(${file.absolutePath})")
  41             file.readText(Charsets.UTF_8)
  42         }
  43
  44         suspend fun getClassPathFileContent(fileName: String): String = withContext(Dispatchers.IO) {
  45             //log.trace("Reading Classpath File($fileName)")
  46             IOUtils.toString(JacksonUtils::class.java.classLoader
  47                     .getResourceAsStream(fileName), Charset.defaultCharset())
  48         }
  49
  50         suspend fun <T> readValueFromFile(fileName: String, valueType: Class<T>): T? {
  51             val content: String = getContent(fileName)
  52             return JacksonUtils.readValue(content, valueType)
  53         }
  54
  55         suspend fun <T> readValueFromClassPathFile(fileName: String, valueType: Class<T>): T? {
  56             val content: String = getClassPathFileContent(fileName)
  57             return JacksonUtils.readValue(content, valueType)
  58         }
  59
  60         suspend fun jsonNodeFromClassPathFile(fileName: String): JsonNode {
  61             val content: String = getClassPathFileContent(fileName)
  62             return JacksonUtils.jsonNode(content)
  63         }
  64
  65         suspend fun jsonNodeFromFile(fileName: String): JsonNode {
  66             val content: String = getContent(fileName)
  67             return JacksonUtils.jsonNode(content)
  68         }
  69
  70         suspend fun <T> getListFromFile(fileName: String, valueType: Class<T>): List<T> {
  71             val content: String = getContent(fileName)
  72             return JacksonUtils.getListFromJson(content, valueType)
  73         }
  74
  75         suspend fun <T> getListFromClassPathFile(fileName: String, valueType: Class<T>): List<T> {
  76             val content: String = getClassPathFileContent(fileName)
  77             return JacksonUtils.getListFromJson(content, valueType)
  78         }
  79
  80         suspend fun <T> getMapFromFile(file: File, valueType: Class<T>): MutableMap<String, T> {
  81             val content: String = getContent(file)
  82             return JacksonUtils.getMapFromJson(content, valueType)
  83         }
  84
  85         suspend fun <T> getMapFromClassPathFile(fileName: String, valueType: Class<T>): MutableMap<String, T> {
  86             val content: String = getClassPathFileContent(fileName)
  87             return JacksonUtils.getMapFromJson(content, valueType)
  88         }
  89
  90     }
  91 }