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/**
* ============LICENSE_START=======================================================
* org.onap.aai
* ================================================================================
* Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.aai.util;
import java.security.KeyManagementException;
import java.util.ArrayList;
import java.util.List;
import java.util.UUID;
import org.onap.aai.exceptions.AAIException;
import org.onap.aai.logging.LoggingContext;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.type.TypeFactory;
import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.ClientHandlerException;
import com.sun.jersey.api.client.ClientResponse;
public class RestController {
private static final String TARGET_NAME = "AAI";
private static EELFLogger LOGGER = EELFManager.getInstance().getLogger(RestController.class);
private static Client client = null;
private String restSrvrBaseURL;
//To do - Come up with helper function that will automatically
//generate the REST API path based on path parameter(s) and query parameter(s)!
public static final String REST_APIPATH_COMPLEXES = "cloud-infrastructure/complexes";
public static final String REST_APIPATH_COMPLEX = "cloud-infrastructure/complexes/complex/";
public static final String REST_APIPATH_PSERVERS = "cloud-infrastructure/pservers";
public static final String REST_APIPATH_PSERVER = "cloud-infrastructure/pservers/pserver/";
public static final String REST_APIPATH_PHYSICALLINKS = "network/physical-links/";
public static final String REST_APIPATH_PHYSICALLINK = "network/physical-links/physical-link/";
public static final String REST_APIPATH_PINTERFACES = "network/p-interfaces/";
public static final String REST_APIPATH_PINTERFACE = "network/p-interfaces/p-interface/";
public static final String REST_APIPATH_VPLSPES = "network/vpls-pes/";
public static final String REST_APIPATH_VPLSPE = "network/vpls-pes/vpls-pe/";
public static final String REST_APIPATH_UPDATE = "actions/update/";
public static final String REST_APIPATH_SEARCH = "search/nodes-query?search-node-type=";
public static final String REST_APIPATH_CLOUDREGION = "cloud-infrastructure/cloud-regions/cloud-region/";
public static final String REST_APIPATH_TENANT = "cloud-infrastructure/tenants/tenant/";
public static final String REST_APIPATH_VIRTUAL_DATA_CENTER = "cloud-infrastructure/virtual-data-centers/virtual-data-center/";
public static final String REST_APIPATH_VIRTUAL_DATA_CENTERS = "cloud-infrastructure/virtual-data-centers/";
//network/generic-vnfs/generic-vnf/{vnf-id}
public static final String REST_APIPATH_GENERIC_VNF = "network/generic-vnfs/generic-vnf/";
public static final String REST_APIPATH_GENERIC_VNFS = "network/generic-vnfs";
public static final String REST_APIPATH_L3_NETWORK = "network/l3-networks/l3-network/";
public static final String REST_APIPATH_L3_NETWORKS = "network/l3-networks";
public static final String REST_APIPATH_INSTANCE_GROUP = "network/instance-groups/instance-group";
public static final String REST_APIPATH_INSTANCE_GROUPS = "network/instance-groups";
public static final String REST_APIPATH_VCE = "network/vces/vce/";
public static final String REST_APIPATH_SERVICE = "service-design-and-creation/services/service/";
public static final String REST_APIPATH_LOGICALLINKS = "network/logical-links/";
public static final String REST_APIPATH_LOGICALLINK = "network/logical-links/logical-link/";
/**
* Inits the rest client.
*
* @throws AAIException the AAI exception
*/
private static void initRestClient() throws AAIException
{
if (client == null) {
try {
client = HttpsAuthClient.getClient();
}
catch (KeyManagementException e){
throw new AAIException("AAI_7117", "KeyManagementException in REST call to DB: " + e.toString());
} catch (Exception e) {
throw new AAIException("AAI_7117", " Exception in REST call to DB: " + e.toString());
}
}
}
/**
* Sets the rest srvr base URL.
*
* @param baseURL the base URL
* @throws AAIException the AAI exception
*/
public void SetRestSrvrBaseURL(String baseURL) throws AAIException
{
if (baseURL == null)
throw new AAIException("AAI_7117", "REST Server base URL cannot be null.");
restSrvrBaseURL = baseURL;
}
/**
* Gets the rest srvr base URL.
*
* @return the rest srvr base URL
*/
public String getRestSrvrBaseURL()
{
return restSrvrBaseURL;
}
public static <T> void Get(T t, String sourceID, String transId, String path, RestObject<T> restObject, boolean oldserver) throws AAIException {
RestController.<T>Get(t, sourceID, transId, path, restObject, oldserver, AAIConstants.AAI_RESOURCES_PORT);
}
/**
* To do - optimization and automation. Also make it as generic as possible.
*
* @param <T> the generic type
* @param t the t
* @param sourceID the source ID
* @param transId the trans id
* @param path the path
* @param restObject the rest object
* @param oldserver the oldserver
* @throws AAIException the AAI exception
*/
@SuppressWarnings("unchecked")
public static <T> void Get(T t, String sourceID, String transId, String path, RestObject<T> restObject, boolean oldserver, int port) throws AAIException {
String methodName = "Get";
String url="";
transId += ":" + UUID.randomUUID().toString();
LoggingContext.save();
LoggingContext.partnerName(sourceID);
LoggingContext.targetEntity(TARGET_NAME);
LoggingContext.requestId(transId);
LoggingContext.serviceName(methodName);
LoggingContext.targetServiceName(methodName);
LOGGER.debug(methodName + " start");
restObject.set(t);
if (oldserver)
url = AAIConfig.get(AAIConstants.AAI_OLDSERVER_URL) + path;
else
url = String.format(AAIConstants.AAI_LOCAL_REST, port) + path;
initRestClient();
LOGGER.debug(url + " for the get REST API");
ClientResponse cres = client.resource(url)
.accept("application/json")
.header("X-TransactionId", transId)
.header("X-FromAppId", sourceID)
.header("Real-Time", "true")
.type("application/json")
.get(ClientResponse.class);
// System.out.println("cres.EntityInputSream()="+cres.getEntityInputStream().toString());
// System.out.println("cres.tostring()="+cres.toString());
if (cres.getStatus() == 200) {
// System.out.println(methodName + ": url=" + url);
t = (T) cres.getEntity(t.getClass());
restObject.set(t);
LOGGER.debug(methodName + "REST api GET was successfull!");
} else {
LoggingContext.restore();
// System.out.println(methodName + ": url=" + url + " failed with status=" + cres.getStatus());
throw new AAIException("AAI_7116", methodName +" with status="+cres.getStatus()+", url="+url);
}
LoggingContext.restore();
}
/**
* Map json to object list.
*
* @param <T> the generic type
* @param typeDef the type def
* @param json the json
* @param clazz the clazz
* @return the list
* @throws Exception the exception
*/
private static <T> List<T> mapJsonToObjectList(T typeDef,String json, Class clazz) throws Exception
{
List<T> list;
ObjectMapper mapper = new ObjectMapper();
System.out.println(json);
TypeFactory t = TypeFactory.defaultInstance();
list = mapper.readValue(json, t.constructCollectionType(ArrayList.class,clazz));
return list;
}
/**
* Put.
*
* @param <T> the generic type
* @param t the t
* @param sourceID the source ID
* @param transId the trans id
* @param path the path
* @throws AAIException the AAI exception
*/
public static <T> void Put(T t, String sourceID, String transId, String path) throws AAIException {
Put( t, sourceID, transId, path, false, AAIConstants.AAI_RESOURCES_PORT);
}
/**
* Put.
*
* @param <T> the generic type
* @param t the t
* @param sourceID the source ID
* @param transId the trans id
* @param path the path
* @throws AAIException the AAI exception
*/
public static <T> void Put(T t, String sourceID, String transId, String path, boolean oldserver) throws AAIException {
Put( t, sourceID, transId, path, oldserver, AAIConstants.AAI_RESOURCES_PORT);
}
/**
* Put.
*
* @param <T> the generic type
* @param t the t
* @param sourceID the source ID
* @param transId the trans id
* @param path the path
* @param oldserver the oldserver
* @throws AAIException the AAI exception
*/
public static <T> void Put(T t, String sourceID, String transId, String path, boolean oldserver, int port) throws AAIException {
String methodName = "Put";
String url="";
transId += ":" + UUID.randomUUID().toString();
LoggingContext.save();
LoggingContext.partnerName(sourceID);
LoggingContext.targetEntity(TARGET_NAME);
LoggingContext.requestId(transId);
LoggingContext.serviceName(methodName);
LoggingContext.targetServiceName(methodName);
LOGGER.debug(methodName + " start");
initRestClient();
if (oldserver)
url = AAIConfig.get(AAIConstants.AAI_OLDSERVER_URL) + path;
else
url = String.format(AAIConstants.AAI_LOCAL_REST, port) + path;
ClientResponse cres = client.resource(url)
.accept("application/json")
.header("X-TransactionId", transId)
.header("X-FromAppId", sourceID)
.header("Real-Time", "true")
.type("application/json")
.entity(t)
.put(ClientResponse.class);
// System.out.println("cres.tostring()="+cres.toString());
int statuscode = cres.getStatus();
if ( statuscode >= 200 && statuscode <= 299 ) {
LOGGER.debug(methodName+": url=" + url + ", request=" + path);
LoggingContext.restore();
} else {
LoggingContext.restore();
throw new AAIException("AAI_7116", methodName +" with status="+statuscode+", url="+url + ", msg=" + cres.getEntity(String.class));
}
}
public static void Delete(String sourceID, String transId, String path) throws AAIException {
RestController.Delete(sourceID, transId, path, AAIConstants.AAI_RESOURCES_PORT);
}
/**
* Delete.
*
* @param sourceID the source ID
* @param transId the trans id
* @param path the path
* @throws AAIException the AAI exception
*/
public static void Delete(String sourceID, String transId, String path, int port) throws AAIException {
String methodName = "Delete";
String url="";
transId += ":" + UUID.randomUUID().toString();
LoggingContext.save();
LoggingContext.partnerName(sourceID);
LoggingContext.targetEntity(TARGET_NAME);
LoggingContext.requestId(transId);
LoggingContext.serviceName(methodName);
LoggingContext.targetServiceName(methodName);
LOGGER.debug(methodName + " start");
initRestClient();
String request = "{}";
url = String.format(AAIConstants.AAI_LOCAL_REST, port) + path;
ClientResponse cres = client.resource(url)
.accept("application/json")
.header("X-TransactionId", transId)
.header("X-FromAppId", sourceID)
.header("Real-Time", "true")
.type("application/json")
.entity(request)
.delete(ClientResponse.class);
if (cres.getStatus() == 404) { // resource not found
LOGGER.info("Resource does not exist...: " + cres.getStatus()
+ ":" + cres.getEntity(String.class));
LoggingContext.restore();
} else if (cres.getStatus() == 200 || cres.getStatus() == 204){
LOGGER.info("Resource " + url + " deleted");
LoggingContext.restore();
} else {
LOGGER.error("Deleting Resource failed: " + cres.getStatus()
+ ":" + cres.getEntity(String.class));
LoggingContext.restore();
throw new AAIException("AAI_7116", "Error during DELETE");
}
}
/**
* Post.
*
* @param <T> the generic type
* @param t the t
* @param sourceID the source ID
* @param transId the trans id
* @param path the path
* @return the string
* @throws Exception the exception
*/
public static <T> String Post(T t, String sourceID, String transId, String path) throws Exception {
String methodName = "Post";
String url="";
transId += ":" + UUID.randomUUID().toString();
LoggingContext.save();
LoggingContext.partnerName(sourceID);
LoggingContext.targetEntity(TARGET_NAME);
LoggingContext.requestId(transId);
LoggingContext.serviceName(methodName);
LoggingContext.targetServiceName(methodName);
LOGGER.debug(methodName + " start");
try {
initRestClient();
url = AAIConfig.get(AAIConstants.AAI_SERVER_URL) + path;
ClientResponse cres = client.resource(url)
.accept("application/json")
.header("X-TransactionId", transId)
.header("X-FromAppId", sourceID)
.header("Real-Time", "true")
.type("application/json")
.entity(t)
.post(ClientResponse.class);
int statuscode = cres.getStatus();
if ( statuscode >= 200 && statuscode <= 299 ) {
LOGGER.debug(methodName + "REST api POST was successful!");
return cres.getEntity(String.class);
} else {
throw new AAIException("AAI_7116", methodName +" with status="+statuscode+", url="+url + ", msg=" + cres.getEntity(String.class));
}
} catch (AAIException e) {
throw new AAIException("AAI_7116", methodName + " with url="+url+ ", Exception: " + e.toString());
} catch (Exception e)
{
throw new AAIException("AAI_7116", methodName + " with url="+url+ ", Exception: " + e.toString());
}
finally {
LoggingContext.restore();
}
}
/**
* Gets the single instance of RestController.
*
* @param <T> the generic type
* @param clazz the clazz
* @return single instance of RestController
* @throws IllegalAccessException the illegal access exception
* @throws InstantiationException the instantiation exception
*/
public static <T> T getInstance(Class<T> clazz) throws IllegalAccessException, InstantiationException
{
return clazz.newInstance();
}
/**
* Does resource exist.
*
* @param <T> the generic type
* @param resourcePath the resource path
* @param resourceClassName the resource class name
* @param fromAppId the from app id
* @param transId the trans id
* @return the t
*/
/*
* DoesResourceExist
*
* To check whether a resource exist or get a copy of the existing version of the resource
*
* Resourcepath: should contain the qualified resource path (including encoded unique key identifier value),
* resourceClassName: is the canonical name of the resource class name,
* fromAppId:
* transId:
*
* Will return null (if the resource doesn’t exist) (or)
* Will return the specified resource from the Graph.
*
* Example:
* LogicalLink llink = new LogicalLink();
* String resourceClassName = llink.getClass().getCanonicalName();
* llink = RestController.DoesResourceExist("network/logical-links/logical-link/" + <encoded-link-name>, resourceClassName, fromAppId, transId);
*/
public static <T> T DoesResourceExist(String resourcePath, String resourceClassName, String fromAppId, String transId) {
try {
RestObject<T> restObj = new RestObject<T>();
@SuppressWarnings("unchecked")
T resourceObj = (T)getInstance(Class.forName(resourceClassName));
restObj.set(resourceObj);
RestController.<T>Get(resourceObj, fromAppId, transId, resourcePath, restObj, false, AAIConstants.AAI_RESOURCES_PORT);
resourceObj = restObj.get();
if (resourceObj != null)
return resourceObj;
} catch (AAIException e) {
} catch (ClientHandlerException che) {
}catch (Exception e) {
}
return null;
}
}
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