249 lines
9.7 KiB
Java
249 lines
9.7 KiB
Java
/**
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*
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*/
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package org.gcube.datatransfer.resolver.services;
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import java.net.URI;
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import java.net.URLEncoder;
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import java.util.Random;
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import java.util.concurrent.ExecutionException;
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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.Path;
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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 org.gcube.common.scope.api.ScopeProvider;
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import org.gcube.datatransfer.resolver.caches.LoadingGeoExplorerApplicationURLCache;
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import org.gcube.datatransfer.resolver.caches.LoadingGeonetworkInstanceCache;
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import org.gcube.datatransfer.resolver.caches.LoadingGisViewerApplicationURLCache;
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import org.gcube.datatransfer.resolver.gis.GeonetworkInstance;
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import org.gcube.datatransfer.resolver.gis.MetadataConverter;
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import org.gcube.datatransfer.resolver.gis.entity.GisLayerItem;
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import org.gcube.datatransfer.resolver.gis.exception.GeonetworkInstanceException;
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import org.gcube.datatransfer.resolver.init.UriResolverSmartGearManagerInit;
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import org.gcube.datatransfer.resolver.services.error.ExceptionManager;
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import org.gcube.spatial.data.geonetwork.LoginLevel;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import com.google.common.cache.CacheLoader.InvalidCacheLoadException;
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/**
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* The GisResolver is able to resolve GIS Links (as a redirect to Gis Viewer
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* Application) in order to display and navigate on web-map the gis layers
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* stored in D4Science's Geonetwork
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*
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* See more at
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* https://gcube.wiki.gcube-system.org/gcube/URI_Resolver#GIS_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("gis")
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public class GisResolver {
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private static Logger logger = LoggerFactory.getLogger(GisResolver.class);
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public static String help = "https://wiki.gcube-system.org/gcube/URI_Resolver#GIS_Resolver";
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public static final String UTF_8 = "UTF-8";
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public static final String GIS_UUID = "gis-UUID";
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public static final String SCOPE = "scope";
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public static final String GEO_EXPLORER_LAYER_UUID = "geo-exp";
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/**
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* Submit get.
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*
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* @param req the req
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* @param scope the scope
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* @param gisUUID the gis uuid
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* @param geoExplorerUUID the geo explorer uuid
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* @return the response
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* @throws WebApplicationException the web application exception
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*/
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@GET
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@Path("")
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public Response submitGet(@Context HttpServletRequest req, @QueryParam(SCOPE) String scope,
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@QueryParam(GIS_UUID) String gisUUID, @QueryParam(GEO_EXPLORER_LAYER_UUID) String geoExplorerUUID)
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throws WebApplicationException {
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logger.info(this.getClass().getSimpleName() + " GET starts...");
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try {
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boolean isGisLink = false;
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boolean isGeoExplorerLink = false;
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if (scope == null || scope.isEmpty()) {
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logger.error("Query Parameter 'scope' not found");
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throw ExceptionManager.badRequestException(req, "Missing mandatory query parameter 'scope'",
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this.getClass(), help);
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}
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if (gisUUID == null || gisUUID.isEmpty()) {
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logger.error("Path Parameter 'gis-UUID' not found");
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throw ExceptionManager.badRequestException(req, "Missing mandatory query parameter 'gis-UUID'",
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this.getClass(), help);
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} else
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isGisLink = true;
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logger.info(SCOPE + " is: " + scope);
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logger.info(GIS_UUID + " is: " + gisUUID);
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if (geoExplorerUUID == null || geoExplorerUUID.isEmpty()) {
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logger.debug(GEO_EXPLORER_LAYER_UUID + " not found");
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} else
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isGeoExplorerLink = true;
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logger.info(GEO_EXPLORER_LAYER_UUID + " is: " + geoExplorerUUID);
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if (!isGisLink && !isGeoExplorerLink) {
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String err = GIS_UUID + " or " + GEO_EXPLORER_LAYER_UUID + " not found or empty in the query string";
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logger.error(err);
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throw ExceptionManager.badRequestException(req, err, this.getClass(), help);
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}
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if (isGisLink) {
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ScopeProvider.instance.set(scope);
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// ServerParameters geonetworkParams = getCachedServerParameters(scope);
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GisLayerItem gisLayerItem = getGisLayerForLayerUUID(req, scope, gisUUID);
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logger.info("wms url is: " + gisLayerItem.getFullWmsUrlRequest());
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String wmsRequest = URLEncoder.encode(gisLayerItem.getFullWmsUrlRequest(), UTF_8);
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logger.info("encoded WMS url is: " + wmsRequest);
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String layerTitle = null;
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if (gisLayerItem.getCitationTitle() != null && !gisLayerItem.getCitationTitle().isEmpty())
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layerTitle = URLEncoder.encode(gisLayerItem.getCitationTitle(), UTF_8);
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logger.info("layer Title encoded is: " + layerTitle);
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String gisViewerPortletUrl = null;
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try {
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gisViewerPortletUrl = LoadingGisViewerApplicationURLCache.get(scope);
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} catch (ExecutionException | InvalidCacheLoadException e) {
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logger.error("Error on getting the GisViewer Applicaton URL from cache for scope " + scope, e);
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throw ExceptionManager.wrongParameterException(req,
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"Error on getting the GisViewer Applicaton URL from cache for scope " + scope
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+ ".\nIs the Application Profile with APPID "
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+ UriResolverSmartGearManagerInit.getGisViewerProfile().getAppId()
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+ " registered for this scope: " + scope + "?",
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this.getClass(), help);
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}
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// CHECKING IF THE GisViewer Portlet URL is valid
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if (gisViewerPortletUrl == null || gisViewerPortletUrl.isEmpty())
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throw ExceptionManager.notFoundException(req,
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"GisViewer Portlet URL not found in the scope: " + scope + ". Please contact the support",
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this.getClass(), help);
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logger.info("Gis Viewer Application url is: " + gisViewerPortletUrl);
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gisViewerPortletUrl += "?rid=" + new Random().nextLong() + "&wmsrequest=" + wmsRequest + "&uuid="
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+ URLEncoder.encode(gisUUID, UTF_8);
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if (layerTitle != null)
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gisViewerPortletUrl += "&layertitle=" + layerTitle;
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logger.info("Redirecting to: " + gisViewerPortletUrl);
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return Response.seeOther(new URI(gisViewerPortletUrl)).build();
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}
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if (isGeoExplorerLink) {
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ScopeProvider.instance.set(scope);
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String geoExplorerPortletUrl = null;
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try {
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geoExplorerPortletUrl = LoadingGeoExplorerApplicationURLCache.get(scope);
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} catch (ExecutionException e) {
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logger.error("Error on getting the GeoExplorer Applicaton URL from cache for scope " + scope, e);
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throw ExceptionManager.wrongParameterException(req,
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"Error on getting the GeoExplorer Applicaton URL from cache for scope " + scope
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+ ".\nIs the Application Profile with APPID "
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+ UriResolverSmartGearManagerInit.getGeoExplorerProfile().getAppId()
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+ " registered for this scope: " + scope + "?",
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this.getClass(), help);
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}
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// CHECKING IF THE GeoExplorer Portlet URL is valid
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if (geoExplorerPortletUrl == null || geoExplorerPortletUrl.isEmpty())
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throw ExceptionManager.notFoundException(req,
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"GeoExplorer Portlet URL not found in the scope: " + scope + ". Please contact the support",
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this.getClass(), help);
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logger.info("GeoExplorer Application url is: " + geoExplorerPortletUrl);
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geoExplorerPortletUrl += "?rid=" + new Random().nextLong() + "&luuid="
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+ URLEncoder.encode(geoExplorerUUID, UTF_8);
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// urlRedirect(req, resp, geoExplorerPortletUrl);
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return Response.seeOther(new URI(geoExplorerPortletUrl)).build();
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}
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throw ExceptionManager.badRequestException(req,
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GIS_UUID + " or " + GEO_EXPLORER_LAYER_UUID + " not found or empty in the query string",
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this.getClass(), help);
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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 = "Sorry, an error occurred on resolving request with UUID " + gisUUID + " and scope "
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+ scope + ". Please, contact support!";
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if (e.getCause() != null)
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error += "\n\nCaused: " + e.getCause().getMessage();
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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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* Gets the gis layer for layer uuid.
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*
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* @param req the req
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* @param scope the scope
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* @param gisUUID the gis uuid
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* @return the gis layer for layer uuid
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* @throws Exception the exception
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*/
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public GisLayerItem getGisLayerForLayerUUID(HttpServletRequest req, String scope, String gisUUID) throws Exception {
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try {
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GeonetworkInstance gi = null;
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try {
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gi = LoadingGeonetworkInstanceCache.get(scope);
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} catch (ExecutionException | InvalidCacheLoadException e) {
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logger.error("Error on getting the Geonetwork Instance from cache for scope " + scope, e);
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throw ExceptionManager.wrongParameterException(req,
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"Error on getting the Geonetwork Instance from cache for scope " + scope
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+ ". Is it registered for this scope: " + scope + "?",
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this.getClass(), help);
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}
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if (gi == null)
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throw new Exception("GeonetworkInstance not instanciable in the scope: " + scope);
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LoginLevel toLoginLevel = LoginLevel.SCOPE;
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logger.info(
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"Performing authentication on GN with " + LoginLevel.class.getSimpleName() + " " + toLoginLevel);
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gi.getGeonetworkPublisher().login(toLoginLevel);
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GisLayerItem gisLayerItem = MetadataConverter.getWMSOnLineResource(gi, gisUUID);
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return gisLayerItem;
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// TODO CREATE A BEAN ADDING WMS REQUEST AND LAYER TITLE MetadataConverter.
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} catch (GeonetworkInstanceException e) {
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logger.error("An error occurred when instancing geonetowrk gis layer with UUID " + gisUUID, e);
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throw new IllegalArgumentException(
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"Sorry, An error occurred when instancing geonetwork with UUID: " + gisUUID);
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} catch (Exception e) {
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logger.error("An error occurred when retrieving gis layer with UUID " + gisUUID, e);
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throw new IllegalArgumentException(
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"Sorry, An error occurred when retrieving gis layer with UUID " + gisUUID);
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}
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}
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}
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