+++ /dev/null
-/*
- * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0 which accompanies this distribution,
- * and is available at http://www.eclipse.org/legal/epl-v10.html
- */
-package org.opendaylight.controller.sal.rest.impl;
-
-import com.google.common.base.Splitter;
-import com.google.common.collect.Iterators;
-import com.google.gson.JsonElement;
-import com.google.gson.JsonObject;
-import com.google.gson.JsonParser;
-import com.google.gson.JsonPrimitive;
-
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.net.URI;
-import java.util.Iterator;
-import java.util.Map.Entry;
-import java.util.Set;
-
-import org.opendaylight.controller.sal.rest.impl.RestUtil.PrefixMapingFromJson;
-import org.opendaylight.controller.sal.restconf.impl.CompositeNodeWrapper;
-import org.opendaylight.controller.sal.restconf.impl.EmptyNodeWrapper;
-import org.opendaylight.controller.sal.restconf.impl.IdentityValuesDTO;
-import org.opendaylight.controller.sal.restconf.impl.SimpleNodeWrapper;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-final class JsonReader {
- private static final Logger LOG = LoggerFactory.getLogger(JsonReader.class);
- private static final Splitter COLON_SPLITTER = Splitter.on(':');
-
- private JsonReader() {
-
- }
-
- public static CompositeNodeWrapper read(final InputStream entityStream) throws UnsupportedFormatException {
- JsonParser parser = new JsonParser();
-
- JsonElement rootElement = parser.parse(new InputStreamReader(entityStream));
- if (rootElement.isJsonNull()) {
- //no content, so return null to indicate no input
- return null;
- }
-
- if (!rootElement.isJsonObject()) {
- throw new UnsupportedFormatException("Root element of Json has to be Object");
- }
-
- Set<Entry<String, JsonElement>> entrySetsOfRootJsonObject = rootElement.getAsJsonObject().entrySet();
- if (entrySetsOfRootJsonObject.size() != 1) {
- throw new UnsupportedFormatException("Json Object should contain one element");
- }
-
- Entry<String, JsonElement> childEntry = entrySetsOfRootJsonObject.iterator().next();
- String firstElementName = childEntry.getKey();
- JsonElement firstElementType = childEntry.getValue();
- if (firstElementType.isJsonObject()) {
- // container in yang
- return createStructureWithRoot(firstElementName, firstElementType.getAsJsonObject());
- }
- if (firstElementType.isJsonArray()) {
- // list in yang
- if (firstElementType.getAsJsonArray().size() == 1) {
- JsonElement firstElementInArray = firstElementType.getAsJsonArray().get(0);
- if (firstElementInArray.isJsonObject()) {
- return createStructureWithRoot(firstElementName, firstElementInArray.getAsJsonObject());
- }
- throw new UnsupportedFormatException(
- "Array as the first element in Json Object can have only Object element");
- }
- }
- throw new UnsupportedFormatException(
- "First element in Json Object has to be \"Object\" or \"Array with one Object element\". Other scenarios are not supported yet.");
- }
-
- private static CompositeNodeWrapper createStructureWithRoot(final String rootObjectName, final JsonObject rootObject) {
- CompositeNodeWrapper firstNode = new CompositeNodeWrapper(getNamespaceFor(rootObjectName),
- getLocalNameFor(rootObjectName));
- for (Entry<String, JsonElement> childOfFirstNode : rootObject.entrySet()) {
- addChildToParent(childOfFirstNode.getKey(), childOfFirstNode.getValue(), firstNode);
- }
- return firstNode;
- }
-
- private static void addChildToParent(final String childName, final JsonElement childType, final CompositeNodeWrapper parent) {
- if (childType.isJsonObject()) {
- CompositeNodeWrapper child = new CompositeNodeWrapper(getNamespaceFor(childName), getLocalNameFor(childName));
- parent.addValue(child);
- for (Entry<String, JsonElement> childOfChild : childType.getAsJsonObject().entrySet()) {
- addChildToParent(childOfChild.getKey(), childOfChild.getValue(), child);
- }
- } else if (childType.isJsonArray()) {
- if (childType.getAsJsonArray().size() == 1 && childType.getAsJsonArray().get(0).isJsonNull()) {
- parent.addValue(new EmptyNodeWrapper(getNamespaceFor(childName), getLocalNameFor(childName)));
- } else {
- for (JsonElement childOfChildType : childType.getAsJsonArray()) {
- addChildToParent(childName, childOfChildType, parent);
- }
- }
- } else if (childType.isJsonPrimitive()) {
- JsonPrimitive childPrimitive = childType.getAsJsonPrimitive();
- String value = childPrimitive.getAsString().trim();
- parent.addValue(new SimpleNodeWrapper(getNamespaceFor(childName), getLocalNameFor(childName),
- resolveValueOfElement(value)));
- } else {
- LOG.debug("Ignoring unhandled child type {}", childType);
- }
- }
-
- private static URI getNamespaceFor(final String jsonElementName) {
- final Iterator<String> it = COLON_SPLITTER.split(jsonElementName).iterator();
-
- // The string needs to me in form "moduleName:localName"
- if (it.hasNext()) {
- final String maybeURI = it.next();
- if (Iterators.size(it) == 1) {
- return URI.create(maybeURI);
- }
- }
-
- return null;
- }
-
- private static String getLocalNameFor(final String jsonElementName) {
- final Iterator<String> it = COLON_SPLITTER.split(jsonElementName).iterator();
-
- // The string needs to me in form "moduleName:localName"
- final String ret = Iterators.get(it, 1, null);
- return ret != null && !it.hasNext() ? ret : jsonElementName;
- }
-
- private static Object resolveValueOfElement(final String value) {
- // it could be instance-identifier Built-In Type
- if (!value.isEmpty() && value.charAt(0) == '/') {
- IdentityValuesDTO resolvedValue = RestUtil.asInstanceIdentifier(value, new PrefixMapingFromJson());
- if (resolvedValue != null) {
- return resolvedValue;
- }
- }
-
- // it could be identityref Built-In Type
- URI namespace = getNamespaceFor(value);
- if (namespace != null) {
- return new IdentityValuesDTO(namespace.toString(), getLocalNameFor(value), null,value);
- }
- // it is not "prefix:value" but just "value"
- return value;
- }
-
-}
Code Review / controller.git / blobdiff