158 lines
6.0 KiB
Java
158 lines
6.0 KiB
Java
package org.gcube.portlets.gcubeckan.gcubeckandatacatalog.server.manage;
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import static org.gcube.resources.discovery.icclient.ICFactory.clientFor;
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import static org.gcube.resources.discovery.icclient.ICFactory.queryFor;
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import java.util.Iterator;
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import java.util.List;
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import org.gcube.common.resources.gcore.ServiceEndpoint;
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import org.gcube.common.resources.gcore.ServiceEndpoint.AccessPoint;
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import org.gcube.common.scope.api.ScopeProvider;
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import org.gcube.datacatalogue.ckanutillibrary.DataCatalogue;
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import org.gcube.portlets.gcubeckan.gcubeckandatacatalog.shared.ManageProductBean;
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import org.gcube.resources.discovery.client.api.DiscoveryClient;
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import org.gcube.resources.discovery.client.queries.api.SimpleQuery;
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import org.json.simple.JSONObject;
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import org.json.simple.parser.JSONParser;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import eu.trentorise.opendata.jackan.internal.org.apache.http.HttpResponse;
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import eu.trentorise.opendata.jackan.internal.org.apache.http.client.methods.HttpPost;
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import eu.trentorise.opendata.jackan.internal.org.apache.http.entity.StringEntity;
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import eu.trentorise.opendata.jackan.internal.org.apache.http.impl.client.CloseableHttpClient;
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import eu.trentorise.opendata.jackan.internal.org.apache.http.impl.client.HttpClientBuilder;
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import eu.trentorise.opendata.jackan.internal.org.apache.http.util.EntityUtils;
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/**
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* Endpoint for sending update records information to GRSF KB
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* @author Costantino Perciante at ISTI-CNR (costantino.perciante@isti.cnr.it)
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*/
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public class GRSFNotificationService {
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private static Logger logger = LoggerFactory.getLogger(GRSFNotificationService.class);
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private static final String SERVICE_POST_METHOD = "/service/updater/post";
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// request post fields
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private static final String CATALOGUE_ID = "catalog_id";
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private static final String KB_ID = "record_id";
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private static final String PRODUCT_TYPE = "type";
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private static final String STATUS = "status";
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private static final String ANNOTATION = "annotation_msg";
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private static final String ERROR = "error";
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// the error of the update on success
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private static final int STATUS_SUCCESS = 200;
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// GRSF update service information
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private static final String SERVICE_NAME = "GRSF Updater";
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private static final String SERVICE_CATEGORY = "Service";
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/**
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* Discover the service endpoint and return its url
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* @param context
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* @return the url of the service on success, null otherwise
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*/
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public static String discoverEndPoint(String context){
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String oldContext = ScopeProvider.instance.get();
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ScopeProvider.instance.set(context);
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String toReturn = null;
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try{
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SimpleQuery query = queryFor(ServiceEndpoint.class);
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query.addCondition("$resource/Profile/Name/text() eq '"+ SERVICE_NAME +"'");
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query.addCondition("$resource/Profile/Category/text() eq '"+ SERVICE_CATEGORY +"'");
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DiscoveryClient<ServiceEndpoint> client = clientFor(ServiceEndpoint.class);
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List<ServiceEndpoint> resources = client.submit(query);
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if (resources.size() == 0){
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logger.error("There is no Runtime Resource having name " + SERVICE_NAME +" and Category " + SERVICE_CATEGORY + " in this scope.");
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throw new Exception("There is no Runtime Resource having name " + SERVICE_NAME +" and Category " + SERVICE_CATEGORY + " in this scope.");
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}
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else {
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for (ServiceEndpoint res : resources) {
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Iterator<AccessPoint> accessPointIterator = res.profile().accessPoints().iterator();
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while (accessPointIterator.hasNext()) {
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ServiceEndpoint.AccessPoint accessPoint = (ServiceEndpoint.AccessPoint) accessPointIterator
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.next();
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// return the path
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toReturn = accessPoint.address();
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}
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}
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}
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}catch(Exception e){
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logger.error("Unable to retrieve such service endpoint information!", e);
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}finally{
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if(oldContext != null && !oldContext.equals(context))
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ScopeProvider.instance.set(oldContext);
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}
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return toReturn;
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}
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/**
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* Send an update for this bean
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* @param baseUrl
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* @param bean
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* @param username
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* @param catalogue
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* @return true on success, false otherwise
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*/
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@SuppressWarnings("unchecked")
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public static String updateCatalogueRecord(String serviceUrl, ManageProductBean bean, DataCatalogue catalogue, String username){
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if(serviceUrl == null)
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throw new IllegalArgumentException("Service url cannot be null");
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if(bean == null)
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throw new IllegalArgumentException("Product bean to manage cannot be null");
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try(CloseableHttpClient httpClient = HttpClientBuilder.create().build();){
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JSONObject obj = new JSONObject();
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obj.put(CATALOGUE_ID, bean.getCatalogueIdentifier());
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obj.put(KB_ID, bean.getKnowledgeBaseIdentifier());
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obj.put(PRODUCT_TYPE, bean.getProductType().toLowerCase());
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obj.put(STATUS, bean.getNewStatus().toString().toLowerCase());
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String annotation = bean.getAnnotation();
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if(annotation != null)
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obj.put(ANNOTATION, annotation.replaceAll("\"", ""));
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logger.debug("Update request looks like " + obj.toJSONString());
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HttpPost request = new HttpPost(serviceUrl + SERVICE_POST_METHOD);
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request.setHeader("Accept", "application/json");
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request.setHeader("Content-type", "application/json");
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StringEntity params = new StringEntity(obj.toJSONString());
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request.setEntity(params);
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HttpResponse response = httpClient.execute(request);
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logger.debug("Response code is " + response.getStatusLine().getStatusCode() + " and response message is " + response.getStatusLine().getReasonPhrase());
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String result = EntityUtils.toString(response.getEntity());
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JSONParser parser = new JSONParser();
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JSONObject parsedJSON = (JSONObject)parser.parse(result);
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if(response.getStatusLine().getStatusCode() != STATUS_SUCCESS)
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throw new IllegalArgumentException(
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"Error while performing the update request: " + response.getStatusLine().getReasonPhrase() +
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"and error in the result bean is " + parsedJSON.get(ERROR));
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// patch the catalogue product
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new PatchProductThread(catalogue, bean, username).start();
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}catch(Exception e){
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logger.error("Unable to update this record", e);
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return e.getMessage();
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}
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return null;
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}
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}
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