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 com.fasterxml.jackson.databind.JsonNode
  21 import kotlinx.coroutines.Dispatchers
  22 import kotlinx.coroutines.withContext
  23 import org.apache.commons.io.IOUtils
  24 import org.onap.ccsdk.cds.controllerblueprints.core.normalizedFile
  25 import org.slf4j.LoggerFactory
  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(
  47                 JacksonUtils::class.java.classLoader
  48                     .getResourceAsStream(fileName), Charset.defaultCharset()
  49             )
  50         }
  51
  52         suspend fun <T> readValueFromFile(fileName: String, valueType: Class<T>): T? {
  53             val content: String = getContent(fileName)
  54             return JacksonUtils.readValue(content, valueType)
  55         }
  56
  57         suspend fun <T> readValueFromClassPathFile(fileName: String, valueType: Class<T>): T? {
  58             val content: String = getClassPathFileContent(fileName)
  59             return JacksonUtils.readValue(content, valueType)
  60         }
  61
  62         suspend fun jsonNodeFromClassPathFile(fileName: String): JsonNode {
  63             val content: String = getClassPathFileContent(fileName)
  64             return JacksonUtils.jsonNode(content)
  65         }
  66
  67         suspend fun jsonNodeFromFile(fileName: String): JsonNode {
  68             val content: String = getContent(fileName)
  69             return JacksonUtils.jsonNode(content)
  70         }
  71
  72         suspend fun <T> getListFromFile(fileName: String, valueType: Class<T>): List<T> {
  73             val content: String = getContent(fileName)
  74             return JacksonUtils.getListFromJson(content, valueType)
  75         }
  76
  77         suspend fun <T> getListFromClassPathFile(fileName: String, valueType: Class<T>): List<T> {
  78             val content: String = getClassPathFileContent(fileName)
  79             return JacksonUtils.getListFromJson(content, valueType)
  80         }
  81
  82         suspend fun <T> getMapFromFile(file: File, valueType: Class<T>): MutableMap<String, T> {
  83             val content: String = getContent(file)
  84             return JacksonUtils.getMapFromJson(content, valueType)
  85         }
  86
  87         suspend fun <T> getMapFromClassPathFile(fileName: String, valueType: Class<T>): MutableMap<String, T> {
  88             val content: String = getClassPathFileContent(fileName)
  89             return JacksonUtils.getMapFromJson(content, valueType)
  90         }
  91     }
  92 }