140 lines
4.9 KiB
Java
140 lines
4.9 KiB
Java
package org.gcube.datatransfer.resolver.services;
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import static org.gcube.common.storagehub.model.Constants.versionPrefix;
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import javax.enterprise.context.RequestScoped;
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import javax.servlet.http.HttpServletRequest;
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import javax.ws.rs.GET;
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import javax.ws.rs.HEAD;
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import javax.ws.rs.Path;
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import javax.ws.rs.PathParam;
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import javax.ws.rs.WebApplicationException;
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import javax.ws.rs.core.Context;
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import javax.ws.rs.core.Response;
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import javax.ws.rs.core.Response.ResponseBuilder;
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import org.gcube.common.storagehub.client.StreamDescriptor;
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import org.gcube.common.storagehub.client.plugins.AbstractPlugin;
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import org.gcube.common.storagehub.client.proxies.ItemManagerClient;
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import org.gcube.datatransfer.resolver.services.error.ExceptionManager;
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import org.gcube.datatransfer.resolver.util.StorageHubMetadataResponseBuilder;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* The Class StorageHubResolver.
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*
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* @author Francesco Mangiacrapa at ISTI-CNR (francesco.mangiacrapa@isti.cnr.it)
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* Dec 14, 2018
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*/
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@Path("shub/metadata/{id}")
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public class StorageHubResolverGetMetadata {
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private ItemManagerClient client = AbstractPlugin.item().build();
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public static final String STORAGE_HUB_ID = "id";
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private static Logger logger = LoggerFactory.getLogger(StorageHubResolverGetMetadata.class);
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private String help = "https://wiki.gcube-system.org/gcube/URI_Resolver#STORAGE-HUB_Resolver";
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@RequestScoped
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@PathParam(STORAGE_HUB_ID)
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String id;
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/**
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* Gets the metadata.
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*
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* @param req the req
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* @return the metadata
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*/
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@HEAD
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@Path("")
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public Response getMetadata(@Context HttpServletRequest req) {
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logger.info(this.getClass().getSimpleName()+" HEAD getMetadata called");
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try{
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//Checking mandatory parameter id
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if(id==null || id.isEmpty()){
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logger.error("Path Parameter "+STORAGE_HUB_ID+" not found");
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throw ExceptionManager.badRequestException(req, "Missing mandatory path parameter "+STORAGE_HUB_ID, StorageHubResolverGetMetadata.class, help);
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}
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try{
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StreamDescriptor descriptor = client.resolvePublicLink(id);
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ResponseBuilder response = Response
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.noContent();
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response = new StorageHubMetadataResponseBuilder(req, response).fillMetadata(descriptor, id);
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return response.build();
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}catch(Exception e){
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logger.error("Error on getting file with "+id, e);
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String errorMsg = "Error on getting file with hub id '"+id+"'. "+e.getMessage();
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throw ExceptionManager.internalErrorException(req, errorMsg, StorageHubResolverGetMetadata.class, help);
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}
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}catch (Exception e) {
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if(!(e instanceof WebApplicationException)){
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//UNEXPECTED EXCEPTION managing it as WebApplicationException
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String error = "Error occurred on resolving the StorageHub URL with id: "+id+". Please, contact the support!";
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throw ExceptionManager.internalErrorException(req, error, this.getClass(), help);
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}
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//ALREADY MANAGED as WebApplicationException
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logger.error("Exception:", e);
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throw (WebApplicationException) e;
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}
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}
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@GET
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@Path("{version}")
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public Response getMetadataVersion(@Context HttpServletRequest req, @PathParam("version") String version) {
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logger.info(this.getClass().getSimpleName() +" HEAD getMetadataVersion called");
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try{
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ItemManagerClient client = AbstractPlugin.item().build();
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//Checking mandatory parameter id
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if(id==null || id.isEmpty()){
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logger.error("Path Parameter "+STORAGE_HUB_ID+" not found");
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throw ExceptionManager.badRequestException(req, "Missing mandatory path parameter "+STORAGE_HUB_ID, StorageHubResolver.class, help);
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}
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//Checking mandatory parameter id
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if(version==null || version.isEmpty()){
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logger.error("Parameter 'version' not found");
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throw ExceptionManager.badRequestException(req, "Missing mandatory parameter 'version'", StorageHubResolver.class, help);
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}
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try{
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String identifier = String.format("%s%s%s",id, versionPrefix, version);
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StreamDescriptor descriptor = client.resolvePublicLink(identifier);
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ResponseBuilder response = Response
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.ok(descriptor.getStream());
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response = new StorageHubMetadataResponseBuilder(req, response).fillMetadata(descriptor, id);
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return response.build();
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}catch(Exception e){
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String errorMsg = "Error on getting versioned file with hub id '"+id+ "' and version '"+version+"'";
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logger.error(errorMsg, e);
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throw ExceptionManager.internalErrorException(req, errorMsg, StorageHubResolver.class, help);
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}
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}catch (Exception e) {
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if(!(e instanceof WebApplicationException)){
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//UNEXPECTED EXCEPTION managing it as WebApplicationException
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String error = "Error occurred on resolving the StorageHub URL with id: "+id+" and version: "+version+". Please, contact the support!";
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throw ExceptionManager.internalErrorException(req, error, this.getClass(), help);
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}
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//ALREADY MANAGED as WebApplicationException
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logger.error("Exception:", e);
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throw (WebApplicationException) e;
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}
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}
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}
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