+/*
+ * 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;
-import com.google.common.collect.Lists;
-import com.google.gson.JsonElement;
-import com.google.gson.JsonObject;
-import com.google.gson.JsonParser;
-import com.google.gson.JsonPrimitive;
+final class JsonReader {
+ private static final Logger LOG = LoggerFactory.getLogger(JsonReader.class);
+ private static final Splitter COLON_SPLITTER = Splitter.on(':');
+
+ private JsonReader() {
-class JsonReader {
+ }
- public CompositeNodeWrapper read(InputStream entityStream) throws UnsupportedFormatException {
+ 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");
- } else {
- Entry<String, JsonElement> childEntry = Lists.newArrayList(entrySetsOfRootJsonObject).get(0);
- 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");
+ }
+
+ 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.");
}
+ 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 CompositeNodeWrapper createStructureWithRoot(String rootObjectName, JsonObject rootObject) {
- CompositeNodeWrapper firstNode = new CompositeNodeWrapper(getNamespaceFrom(rootObjectName),
- getLocalNameFrom(rootObjectName));
+ 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 void addChildToParent(String childName, JsonElement childType, CompositeNodeWrapper parent) {
+ private static void addChildToParent(final String childName, final JsonElement childType, final CompositeNodeWrapper parent) {
if (childType.isJsonObject()) {
- CompositeNodeWrapper child = new CompositeNodeWrapper(getNamespaceFrom(childName),
- getLocalNameFrom(childName));
+ 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(getNamespaceFrom(childName), getLocalNameFrom(childName)));
-
+ 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();
- parent.addValue(new SimpleNodeWrapper(getNamespaceFrom(childName), getLocalNameFrom(childName), value));
+ String value = childPrimitive.getAsString().trim();
+ parent.addValue(new SimpleNodeWrapper(getNamespaceFor(childName), getLocalNameFor(childName),
+ resolveValueOfElement(value)));
+ } else {
+ LOG.debug("Ignoring unhandled child type {}", childType);
}
}
- private URI getNamespaceFrom(String jsonElementName) {
- int indexOfDelimeter = jsonElementName.lastIndexOf(':');
- if (indexOfDelimeter == -1) {
- return null;
+ 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 URI.create(jsonElementName.substring(0, indexOfDelimeter));
+
+ 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 String getLocalNameFrom(String jsonElementName) {
- int indexOfDelimeter = jsonElementName.lastIndexOf(':');
- if (indexOfDelimeter == -1) {
- return 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);
}
- return jsonElementName.substring(indexOfDelimeter + 1, jsonElementName.length());
+ // it is not "prefix:value" but just "value"
+ return value;
}
}
Code Review / controller.git / blobdiff