+++ /dev/null
-/*-
- * ============LICENSE_START=======================================================
- * ONAP : APPC
- * ================================================================================
- * Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
- * ================================================================================
- * Copyright (C) 2017 Amdocs
- * =============================================================================
- * Licensed 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.
- *
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.appc.util;
-
-import java.io.FileNotFoundException;
-import java.io.IOException;
-import java.io.InputStream;
-import java.util.Map;
-import com.fasterxml.jackson.annotation.JsonInclude;
-import com.fasterxml.jackson.core.JsonParser;
-import com.fasterxml.jackson.databind.DeserializationFeature;
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.databind.SerializationFeature;
-
-public class JsonUtil {
-
- static ObjectMapper MAPPER = null;
- static {
- MAPPER = new ObjectMapper();
- MAPPER.enable(SerializationFeature.INDENT_OUTPUT);
- MAPPER.configure(JsonParser.Feature.ALLOW_COMMENTS, true);
- MAPPER.setSerializationInclusion(JsonInclude.Include.NON_NULL);
- MAPPER.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES); // allow translation even
- // if extra attrs exist
- // in the json
- MAPPER.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
- // Uncomment below when Jackson is upgraded to version 2.7 or above
- // MAPPER.setPropertyNamingStrategy(PropertyNamingStrategy.KEBAB_CASE);
- }
-
- /**
- * @param valueAsString a valid json Map represented as String
- * @return a flat map that each entry key derived from hierarchy path in the json object and
- * flatted to a dotted separated string. e.g.
- * "{\"A\":\"A-value\",\"B\":{\"C\":\"B.C-value\",\"D\":\"B.D-value\"}}"; will be
- * represented as {A=A-value, B.C=B.C-value, B.D=B.D-value} when it required that the
- * input will not be flatted the json string should be formatted as below example: e.g.
- * "{\"A\":\"A-value\",\"B\":\"{\\\"C\\\":\\\"C-value\\\",\\\"D\\\":\\\"D-value\\\"}\"}"
- * will be represented as {A=A-value, B={"C":"C-value","D":"D-value"}}
- * @throws IOException when the object is not valid json Map
- */
- public static Map<String, String> convertJsonStringToFlatMap(String valueAsString)
- throws IOException {
- Map readValueMap = MAPPER.readValue(valueAsString, Map.class);
- return org.onap.appc.util.ObjectMapper.map(readValueMap);
- }
-
- /**
- * 0 is the getStackTrace method 1 is the current method 2 is the parent method, 3 is the
- * grandparent method or the parent class in this case.
- */
- private static final int PARENT_CLASS_INDEX = 3;
-
-
- /**
- * @see #readInputJson(String, Class, Class)
- */
- public static <T> T readInputJson(String location, Class<T> returnClass) throws IOException {
- return readInputJson(location, returnClass, getCallingClass(PARENT_CLASS_INDEX));
- }
-
- /**
- * @param location The location or name of the file we are trying to read e.g. JsonBody.json
- * @param returnClass The class *this* Json is suppose to represent.
- * @param locationClass The starting point for json lookup. the value specified by location is
- * relative to this class.
- * @return The object being returned
- * @throws IOException Can't find the specified json file at Location.
- */
- public static <T> T readInputJson(String location, Class<T> returnClass, Class<?> locationClass)
- throws IOException {
- try (InputStream is = locationClass.getResourceAsStream(location)) {
- validateInput(is, location);
- return MAPPER.readValue(is, returnClass);
- }
- }
-
- /**
- * Note that this method is sensitive to the depth of the call stack. For example if a public
- * method calls a private method, that calls this method likely the desired classIndex value is
- * 4 rather than 3. However, it's convenient to reduce the input required by callers of this
- * class.
- *
- * @param classIndex How far up the stack trace to find the class we want.
- * @return The class that called one of the public methods of this class.
- */
- private static Class<?> getCallingClass(int classIndex) {
- String className = Thread.currentThread().getStackTrace()[classIndex].getClassName();
- try {
- return Class.forName(className);
- } catch (ClassNotFoundException e) {
- // Theoretically impossible.
- throw new IllegalStateException(
- "Could not do class lookup for class in our stack trace?!?");
- }
- }
-
- private static void validateInput(InputStream is, String location)
- throws FileNotFoundException {
- if (is == null) {
- throw new FileNotFoundException(String.format("Could not find file at '%s'", location));
- }
- }
-
-}
Code Review / appc.git / blobdiff