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/*
* ============LICENSE_START=======================================================
* Actn Interface Tools
* ================================================================================
* Copyright (C) 2023 Huawei Canada Limited.
* ================================================================================
* 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.integration.actninterfacetools.yangutils;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.util.HashMap;
import java.util.Map;
import java.util.ServiceLoader;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
import org.apache.commons.io.IOUtils;
import org.onap.integration.actninterfacetools.globalapi.GlobalService;
import org.onosproject.yang.model.DataNode;
import org.onosproject.yang.model.DefaultResourceData;
import org.onosproject.yang.model.InnerNode;
import org.onosproject.yang.model.NodeKey;
import org.onosproject.yang.model.ResourceData;
import org.onosproject.yang.model.ResourceId;
import org.onosproject.yang.runtime.CompositeData;
import org.onosproject.yang.runtime.CompositeStream;
import org.onosproject.yang.runtime.DefaultCompositeData;
import org.onosproject.yang.runtime.DefaultCompositeStream;
import org.onosproject.yang.runtime.DefaultRuntimeContext;
import org.onosproject.yang.runtime.RuntimeContext;
import org.onosproject.yang.runtime.YangRuntimeService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Utilities used by the RESTCONF app.
*/
public final class CodecConverter {
/**
* Data format required by YangRuntime Service.
*/
private static final String JSON_FORMAT = "JSON";
private static final String SLASH = "/";
private static YangRuntimeService YANG_RUNTIME = null ;
private static final Logger log = LoggerFactory.getLogger(CodecConverter.class);
public static void active(){
ServiceLoader<GlobalService> serviceLoader = ServiceLoader.load(GlobalService.class);
for (GlobalService service : serviceLoader) {
YANG_RUNTIME = service.getRuntimeService();
}
}
/**
* No instantiation.
*/
private CodecConverter() {
}
/**
* Converts an input stream to JSON objectNode.
*
* @param inputStream the InputStream from Resource Data
* @return JSON representation of the data resource
*/
public static ObjectNode convertInputStreamToObjectNode(InputStream inputStream) {
if (inputStream == null) {
return null;
}
ObjectNode rootNode = null;
ObjectMapper mapper = new ObjectMapper();
try {
rootNode = (ObjectNode) mapper.readTree(inputStream);
} catch (IOException e) {
log.error("ERROR: convertInputStreamToObjectNode: ", e);
}
return rootNode;
}
public static JsonNode convertInputStreamToJsonNode(InputStream inputStream) {
if (inputStream == null) {
return null;
}
JsonNode rootNode = null;
ObjectMapper mapper = new ObjectMapper();
try {
rootNode = mapper.readTree(inputStream);
} catch (IOException e) {
log.error("ERROR: convertInputStreamToObjectNode: ", e);
}
return rootNode;
}
/**
* Convert ObjectNode to InputStream.
*
* @param rootNode JSON representation of the data resource
* @return the InputStream from Resource Data
*/
public static InputStream convertObjectNodeToInputStream(ObjectNode rootNode) {
if (rootNode == null) {
return null;
}
String json = rootNode.toString();
InputStream inputStream = null;
try {
inputStream = IOUtils.toInputStream(json);
} catch (Exception e) {
log.error("ERROR: convertObjectNodeToInputStream: ", e);
}
return inputStream;
}
public static InputStream convertJsonNodeToInputStream(JsonNode rootNode) {
if (rootNode == null) {
return null;
}
String json = rootNode.toString();
InputStream inputStream = null;
try {
inputStream = IOUtils.toInputStream(json);
} catch (Exception e) {
log.error("ERROR: convertObjectNodeToInputStream: ", e);
}
return inputStream;
}
public static ResourceId uriToRid(URI uri) {
ResourceData resourceData = objectNodeToResourceData(uri, null);
return resourceData.resourceId();
}
public static DataNode objectNodeToDataNode(URI uri, ObjectNode jsonNode) {
URI parentUri = ResourceIdUtil.rmLastPathSegment(uri);
ResourceData resourceData = objectNodeToResourceData(parentUri, jsonNode);
return resourceData.dataNodes().get(0);
}
public static DataNode objectNodeToDataNode(String uriStr, ObjectNode jsonNode) {
String parentUriStr = ResourceIdUtil.rmLastPathSegmentStr(uriStr);
return objectNodeToDataNodeWithParentUriStr(parentUriStr, jsonNode);
}
public static DataNode objectNodeToDataNodeWithParentUriStr(String parentUriStr, ObjectNode jsonNode) {
ResourceData resourceData = objectNodeToResourceData(parentUriStr, jsonNode);
return resourceData.dataNodes().get(0);
}
public static DataNode objectNodeToDataNodeWithParentRid(ResourceId parentRid, ObjectNode jsonNode) {
String parentUriStr = ResourceIdUtil.convertRidToUriStr(parentRid);
ResourceData resourceData = objectNodeToResourceData(parentUriStr, jsonNode);
return resourceData.dataNodes().get(0);
}
public static DataNode objectNodeToDataNode(ResourceId rId, ObjectNode jsonNode) {
ResourceId parentRid = ResourceIdUtil.parentOf(rId);
return objectNodeToDataNodeWithParentRid(parentRid, jsonNode);
}
public static ResourceData objectNodeToResourceData(URI parentUri, ObjectNode rootNode) {
return objectNodeToResourceData(ResourceIdUtil.getRawUriPath(parentUri), rootNode);
}
public static DataNode removeRootFromDataNode(DataNode dataNode) {
if (dataNode instanceof InnerNode && dataNode.key().schemaId().name().equals("/")) {
Map.Entry<NodeKey, DataNode> entry = ((InnerNode) dataNode).childNodes().entrySet().iterator().next();
dataNode = entry.getValue();
}
return dataNode;
}
public static ResourceData objectNodeToResourceData(String parentUriStr, ObjectNode jsonNode) {
RuntimeContext.Builder runtimeContextBuilder = new DefaultRuntimeContext.Builder();
runtimeContextBuilder.setDataFormat(JSON_FORMAT);
RuntimeContext context = runtimeContextBuilder.build();
ResourceData resourceData = null;
InputStream jsonData = null;
try {
if (jsonNode != null) {
jsonData = convertObjectNodeToInputStream(jsonNode);
}
CompositeStream compositeStream = new DefaultCompositeStream(parentUriStr, jsonData);
// CompositeStream --- YangRuntimeService ---> CompositeData.
CompositeData compositeData = YANG_RUNTIME.decode(compositeStream, context);
resourceData = compositeData.resourceData();
} catch (Exception ex) {
log.error("convertJsonToDataNode failure: ", ex);
}
return resourceData;
}
/**
* Convert Resource Id and Data Node to Json ObjectNode.
*
* @param rid resource identifier
* @param dataNode represents type of node in data store
* @return JSON representation of the data resource
*/
public static ObjectNode dataNodeToObjectNode(ResourceId rid, DataNode dataNode) {
return convertInputStreamToObjectNode(dataNodeToStream(rid, dataNode));
}
public static InputStream dataNodeToStream(ResourceId rid, DataNode dataNode) {
RuntimeContext.Builder runtimeContextBuilder = DefaultRuntimeContext.builder();
runtimeContextBuilder.setDataFormat(JSON_FORMAT);
RuntimeContext context = runtimeContextBuilder.build();
DefaultResourceData.Builder resourceDataBuilder = DefaultResourceData.builder();
resourceDataBuilder.addDataNode(dataNode);
resourceDataBuilder.resourceId(rid);
ResourceData resourceData = resourceDataBuilder.build();
DefaultCompositeData.Builder compositeDataBuilder = DefaultCompositeData.builder();
compositeDataBuilder.resourceData(resourceData);
CompositeData compositeData = compositeDataBuilder.build();
InputStream inputStream = null;
try {
// CompositeData --- YangRuntimeService ---> CompositeStream.
CompositeStream compositeStream = YANG_RUNTIME.encode(compositeData, context);
inputStream = compositeStream.resourceData();
} catch (Exception ex) {
log.error("convertInputStreamToObjectNode failure: ", ex);
}
return inputStream;
}
public static DataNode removeTopDataNode(DataNode dataNode) {
if (dataNode instanceof InnerNode && dataNode.key().schemaId().name().equals("/")) {
Map.Entry<NodeKey, DataNode> entry = ((InnerNode) dataNode).childNodes().entrySet().iterator().next();
dataNode = entry.getValue();
}
return dataNode;
}
}
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