160 lines
5.5 KiB
Java
160 lines
5.5 KiB
Java
package org.gcube.datatransfer.resolver.services;
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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.QueryParam;
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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.ConstantsResolver;
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import org.gcube.datatransfer.resolver.ConstantsResolver.CONTENT_DISPOSITION_VALUE;
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import org.gcube.datatransfer.resolver.services.error.ExceptionManager;
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import org.gcube.datatransfer.resolver.shub.StorageHubMetadataResponseBuilder;
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import org.gcube.datatransfer.resolver.util.ValidateContentDisposition;
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import org.gcube.smartgears.utils.InnerMethodName;
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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 StorageHubResolver provides the methods either to download a gCube
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* Workspace file or to get its metadata.
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*
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* See more at
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* https://gcube.wiki.gcube-system.org/gcube/URI_Resolver#STORAGE-HUB_Resolver
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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")
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public class StorageHubResolver {
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/**
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*
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*/
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public static final String STORAGE_HUB_ID = "id";
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private static Logger logger = LoggerFactory.getLogger(StorageHubResolver.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("/{id}")
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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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// TODO Do we need to check the token?
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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,
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this.getClass(), help);
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}
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try {
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ItemManagerClient client = AbstractPlugin.item().build();
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StreamDescriptor descriptor = client.resolvePublicLink(id);
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ResponseBuilder response = Response.ok();
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response = new StorageHubMetadataResponseBuilder(req, response).fillMetadata(descriptor, id,
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CONTENT_DISPOSITION_VALUE.attachment);
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return response.build();
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} catch (Exception e) {
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logger.error("Error on getting metadata for file with " + id, e);
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String errorMsg = "Error on getting metadata for file with hub id '" + id + "'. " + e.getMessage();
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throw ExceptionManager.internalErrorException(req, errorMsg, this.getClass(), 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
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+ ". 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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* Download.
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*
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* @param req the req
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* @return the response
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*/
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@GET
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@Path("/{id}")
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public Response download(@Context HttpServletRequest req,
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@QueryParam(ConstantsResolver.QUERY_PARAM_CONTENTDISPOSITION) String contentDisposition) {
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logger.info(this.getClass().getSimpleName() + " GET download called");
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try {
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InnerMethodName.instance.set("resolveStorageHubPublicLink");
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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,
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StorageHubResolver.class, help);
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}
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// Checking the optional parameter "Content-Disposition"
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CONTENT_DISPOSITION_VALUE dispositionValue = CONTENT_DISPOSITION_VALUE.attachment;
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// Validating the Content-Disposition value
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dispositionValue = ValidateContentDisposition.validValue(req, this.getClass(), help, contentDisposition);
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try {
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ItemManagerClient client = AbstractPlugin.item().build();
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StreamDescriptor descriptor = client.resolvePublicLink(id);
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ResponseBuilder response = Response.ok(descriptor.getStream());
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response = new StorageHubMetadataResponseBuilder(req, response).fillMetadata(descriptor, id,
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dispositionValue);
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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, 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
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+ ". 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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