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/**
* ============LICENSE_START==========================================
* org.onap.aai
* ===================================================================
* Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
* Copyright © 2017-2018 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.aai.modelloader.entity.model;
import java.io.StringWriter;
import java.util.List;
import javax.ws.rs.core.Response;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.onap.aai.modelloader.config.ModelLoaderConfig;
import org.onap.aai.modelloader.entity.ArtifactType;
import org.onap.aai.modelloader.restclient.AaiRestClient;
import org.onap.aai.modelloader.service.ModelLoaderMsgs;
import org.onap.aai.cl.api.Logger;
import org.onap.aai.cl.eelf.LoggerFactory;
import org.w3c.dom.Node;
import com.sun.jersey.api.client.ClientResponse;
public class ModelArtifact extends AbstractModelArtifact {
private static final String AAI_MODEL_VER_SUB_URL = "/model-vers/model-ver";
private static Logger logger = LoggerFactory.getInstance().getLogger(ModelArtifact.class.getName());
private String modelVerId;
private String modelInvariantId;
private Node modelVer;
private boolean firstVersionOfModel = false;
public ModelArtifact() {
super(ArtifactType.MODEL);
}
public String getModelVerId() {
return modelVerId;
}
public void setModelVerId(String modelVerId) {
this.modelVerId = modelVerId;
}
public String getModelInvariantId() {
return modelInvariantId;
}
public void setModelInvariantId(String modelInvariantId) {
this.modelInvariantId = modelInvariantId;
}
public Node getModelVer() {
return modelVer;
}
public void setModelVer(Node modelVer) {
this.modelVer = modelVer;
}
@Override
public String getUniqueIdentifier() {
return getModelInvariantId() + "|" + getModelVerId();
}
@Override
public boolean push(AaiRestClient aaiClient, ModelLoaderConfig config, String distId, List<AbstractModelArtifact> addedModels) {
ClientResponse getResponse = aaiClient.getResource(getModelUrl(config), distId, AaiRestClient.MimeType.XML);
if ( (getResponse == null) || (getResponse.getStatus() != Response.Status.OK.getStatusCode()) ) {
// Only attempt the PUT if the model doesn't already exist
ClientResponse putResponse = aaiClient.putResource(getModelUrl(config), getPayload(), distId, AaiRestClient.MimeType.XML);
if ( (putResponse != null) && (putResponse.getStatus() == Response.Status.CREATED.getStatusCode()) ) {
addedModels.add(this);
// Flag this as the first version of the model that has been added.
firstVersionOfModel = true;
logger.info(ModelLoaderMsgs.DISTRIBUTION_EVENT, getType().toString() + " " + getUniqueIdentifier() + " successfully ingested.");
}
else {
logger.error(ModelLoaderMsgs.DISTRIBUTION_EVENT_ERROR, "Ingestion failed for " + getType().toString() + " " + getUniqueIdentifier() +
". Rolling back distribution.");
return false;
}
}
else {
logger.info(ModelLoaderMsgs.DISTRIBUTION_EVENT, getType().toString() + " " + getModelInvariantId() + " already exists. Skipping ingestion.");
getResponse = aaiClient.getResource(getModelVerUrl(config), distId, AaiRestClient.MimeType.XML);
if ( (getResponse == null) || (getResponse.getStatus() != Response.Status.OK.getStatusCode()) ) {
// Only attempt the PUT if the model-ver doesn't already exist
ClientResponse putResponse = null;
try {
putResponse = aaiClient.putResource(getModelVerUrl(config), nodeToString(getModelVer()), distId, AaiRestClient.MimeType.XML);
} catch (TransformerException e) {
logger.error(ModelLoaderMsgs.DISTRIBUTION_EVENT_ERROR, "Ingestion failed for " + getType().toString() + " " + getUniqueIdentifier()
+ ": " + e.getMessage() + ". Rolling back distribution.");
return false;
}
if ( (putResponse != null) && (putResponse.getStatus() == Response.Status.CREATED.getStatusCode()) ) {
addedModels.add(this);
logger.info(ModelLoaderMsgs.DISTRIBUTION_EVENT, getType().toString() + " " + getUniqueIdentifier() + " successfully ingested.");
}
else {
logger.error(ModelLoaderMsgs.DISTRIBUTION_EVENT_ERROR, "Ingestion failed for " + getType().toString() + " "
+ getUniqueIdentifier() + ". Rolling back distribution.");
return false;
}
}
else {
logger.info(ModelLoaderMsgs.DISTRIBUTION_EVENT, getType().toString() + " " + getUniqueIdentifier() + " already exists. Skipping ingestion.");
}
}
return true;
}
@Override
public void rollbackModel(AaiRestClient aaiClient, ModelLoaderConfig config, String distId) {
String url = getModelVerUrl(config);
if (firstVersionOfModel) {
// If this was the first version of the model which was added, we want to remove the entire
// model rather than just the version.
url = getModelUrl(config);
}
// Best effort to delete. Nothing we can do in the event this fails.
aaiClient.getAndDeleteResource(url, distId);
}
private String getModelUrl(ModelLoaderConfig config) {
String baseURL = config.getAaiBaseUrl().trim();
String subURL = null;
String instance = null;
subURL = config.getAaiModelUrl(getModelNamespaceVersion()).trim();
instance = getModelInvariantId();
if ( (!baseURL.endsWith("/")) && (!subURL.startsWith("/")) ) {
baseURL = baseURL + "/";
}
if ( baseURL.endsWith("/") && subURL.startsWith("/") ) {
baseURL = baseURL.substring(0, baseURL.length()-1);
}
if (!subURL.endsWith("/")) {
subURL = subURL + "/";
}
String url = baseURL + subURL + instance;
return url;
}
private String getModelVerUrl(ModelLoaderConfig config) {
String baseURL = config.getAaiBaseUrl().trim();
String subURL = null;
String instance = null;
subURL = config.getAaiModelUrl(getModelNamespaceVersion()).trim() + getModelInvariantId() + AAI_MODEL_VER_SUB_URL;
instance = getModelVerId();
if ( (!baseURL.endsWith("/")) && (!subURL.startsWith("/")) ) {
baseURL = baseURL + "/";
}
if ( baseURL.endsWith("/") && subURL.startsWith("/") ) {
baseURL = baseURL.substring(0, baseURL.length()-1);
}
if (!subURL.endsWith("/")) {
subURL = subURL + "/";
}
String url = baseURL + subURL + instance;
return url;
}
private String nodeToString(Node node) throws TransformerException {
StringWriter sw = new StringWriter();
Transformer t = TransformerFactory.newInstance().newTransformer();
t.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
t.transform(new DOMSource(node), new StreamResult(sw));
return sw.toString();
}
}
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