256 lines
7.8 KiB
Java
256 lines
7.8 KiB
Java
package org.gcube.datacatalogue.ckanutillibrary;
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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.ArrayList;
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import java.util.Iterator;
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import java.util.List;
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import org.gcube.common.encryption.StringEncrypter;
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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.exceptions.NoCKanRuntimeResourceException;
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import org.gcube.datacatalogue.ckanutillibrary.exceptions.ServiceEndPointException;
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import org.gcube.datacatalogue.ckanutillibrary.exceptions.TooManyRunningClustersException;
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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.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* Retrieve ckan running instance information in the infrastructure (for both its database and data catalogue url)
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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 CKanRunningCluster {
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//logger
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private static final Logger logger = LoggerFactory.getLogger(CKanRunningCluster.class);
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// database of the datacatalogue info
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private final static String RUNTIME_DB_RESOURCE_NAME = "CKanDatabase";
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private final static String PLATFORM_DB_NAME = "postgres";
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// data catalogue info
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private final static String RUNTIME_CATALOGUE_RESOURCE_NAME = "CKanDataCatalogue";
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private final static String PLATFORM_CATALOGUE_NAME = "Tomcat";
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// api key property
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private final static String API_KEY_PROPERTY = "API_KEY";
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// retrieved data
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private List<String> datacatalogueUrls = new ArrayList<String>();
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private List<String> hostsDB = new ArrayList<String>();
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private List<Integer> portsDB = new ArrayList<Integer>();
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private String nameDB;
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private String userDB;
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private String passwordDB;
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// this token is needed in order to assign roles to user
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private String sysAdminToken;
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public CKanRunningCluster(String scope) throws Exception{
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if(scope == null || scope.isEmpty())
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throw new Exception("Invalid scope!!");
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// retrieve the current scope and save it (it will be reset later)
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String currentScope = ScopeProvider.instance.get();
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logger.debug("Retrieving ckan database service end point information.");
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try {
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// set the scope
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ScopeProvider.instance.set(scope);
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List<ServiceEndpoint> resources = getConfigurationFromISFORDB();
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if (resources.size() > 1) {
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logger.error("Too many Runtime Resource having name " + RUNTIME_DB_RESOURCE_NAME +" in this scope");
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throw new TooManyRunningClustersException("There exist more than 1 Runtime Resource in this scope having name "
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+ RUNTIME_DB_RESOURCE_NAME + " and Platform " + PLATFORM_DB_NAME + ". Only one allowed per infrasrtucture.");
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}
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else if (resources.size() == 0){
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logger.error("There is no Runtime Resource having name " + RUNTIME_DB_RESOURCE_NAME +" and Platform " + PLATFORM_DB_NAME + " in this scope.");
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throw new NoCKanRuntimeResourceException();
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}
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else {
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try{
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logger.debug(resources.toString());
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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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// add this host
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hostsDB.add(accessPoint.address().split(":")[0]);
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// save the port
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int port = Integer.parseInt(accessPoint.address().split(":")[1]);
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portsDB.add(port);
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// save the name of the cluster (this should be unique)
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nameDB = accessPoint.name();
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// save user and password
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passwordDB = StringEncrypter.getEncrypter().decrypt(accessPoint.password());
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userDB = accessPoint.username();
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break;
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}
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}
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}catch(Exception e ){
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logger.error(e.toString());
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throw new ServiceEndPointException();
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}
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}
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logger.debug("Retrieving ckan data catalogue service end point information and sysadmin token.");
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resources = getConfigurationFromISFORCatalogueUrl();
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if (resources.size() > 1) {
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logger.error("Too many Runtime Resource having name " + RUNTIME_CATALOGUE_RESOURCE_NAME +" in this scope");
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throw new TooManyRunningClustersException("There exist more than 1 Runtime Resource in this scope having name "
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+ RUNTIME_CATALOGUE_RESOURCE_NAME + " and Platform " + PLATFORM_CATALOGUE_NAME + ". Only one allowed per infrasrtucture.");
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}
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else if (resources.size() == 0){
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logger.error("There is no Runtime Resource having name " + RUNTIME_CATALOGUE_RESOURCE_NAME +" and Platform " + PLATFORM_CATALOGUE_NAME + " in this scope.");
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throw new NoCKanRuntimeResourceException();
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}
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else {
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try{
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logger.debug(resources.toString());
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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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// add this host
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datacatalogueUrls.add(accessPoint.address());
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// retrieve sys admin token
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sysAdminToken = accessPoint.propertyMap().get(API_KEY_PROPERTY).value();
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sysAdminToken = StringEncrypter.getEncrypter().decrypt(sysAdminToken);
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break;
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}
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}
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}catch(Exception e ){
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logger.error(e.toString());
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throw new ServiceEndPointException();
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}
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}
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}catch(Exception e) {
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logger.error(e.toString());
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throw e;
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}finally{
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// set the scope back
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ScopeProvider.instance.set(currentScope);
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}
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}
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/**
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* Retrieve endpoints information from IS for DB
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* @return list of endpoints for ckan database
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* @throws Exception
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*/
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private List<ServiceEndpoint> getConfigurationFromISFORDB() throws Exception{
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SimpleQuery query = queryFor(ServiceEndpoint.class);
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query.addCondition("$resource/Profile/Name/text() eq '"+ RUNTIME_DB_RESOURCE_NAME +"'");
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query.addCondition("$resource/Profile/Platform/Name/text() eq '"+ PLATFORM_DB_NAME +"'");
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DiscoveryClient<ServiceEndpoint> client = clientFor(ServiceEndpoint.class);
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List<ServiceEndpoint> toReturn = client.submit(query);
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return toReturn;
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}
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/**
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* Retrieve endpoints information from IS for DataCatalogue URL
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* @return list of endpoints for ckan data catalogue
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* @throws Exception
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*/
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private List<ServiceEndpoint> getConfigurationFromISFORCatalogueUrl() throws Exception{
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SimpleQuery query = queryFor(ServiceEndpoint.class);
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query.addCondition("$resource/Profile/Name/text() eq '"+ RUNTIME_CATALOGUE_RESOURCE_NAME +"'");
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query.addCondition("$resource/Profile/Platform/Name/text() eq '"+ PLATFORM_CATALOGUE_NAME +"'");
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DiscoveryClient<ServiceEndpoint> client = clientFor(ServiceEndpoint.class);
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List<ServiceEndpoint> toReturn = client.submit(query);
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return toReturn;
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}
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/**
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* Retrieve data catalogue url
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*/
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public List<String> getDataCatalogueUrl() {
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return datacatalogueUrls;
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}
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/**
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* Get the hosts for such resource.
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* @return
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*/
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public List<String> getDatabaseHosts() {
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return hostsDB;
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}
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/**
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* Get the ports for such resource.
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* @return
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*/
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public List<Integer> getDatabasePorts() {
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return portsDB;
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}
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/**
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* Get the database name.
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* @return
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*/
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public String getDataBaseName() {
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return nameDB;
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}
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/**
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* Get the database's user.
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* @return
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*/
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public String getDataBaseUser() {
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return userDB;
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}
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/**
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* Get the database's password.
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* @return
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*/
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public String getDataBasePassword() {
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return passwordDB;
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}
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/**
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* @return the sysAdminToken
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*/
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public String getSysAdminToken() {
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return sysAdminToken;
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}
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}
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