146 lines
4.6 KiB
Java
146 lines
4.6 KiB
Java
/**
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*
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*/
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package org.gcube.portlets.user.uriresolvermanager;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import org.gcube.common.scope.api.ScopeProvider;
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import org.gcube.portlets.user.uriresolvermanager.entity.ServiceParameter;
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import org.gcube.portlets.user.uriresolvermanager.exception.IllegalArgumentException;
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import org.gcube.portlets.user.uriresolvermanager.exception.UriResolverMapException;
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import org.gcube.portlets.user.uriresolvermanager.readers.RuntimeResourceReader;
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import org.gcube.portlets.user.uriresolvermanager.readers.UriResolverMapReader;
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import org.gcube.portlets.user.uriresolvermanager.util.UrlEncoderUtil;
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import org.gcube.portlets.user.urlshortener.UrlShortener;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
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* @Oct 14, 2014
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*
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*/
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public class UriResolverManager {
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private UriResolverMapReader uriResolverMapReader;
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private Map<String, String> applicationTypes;
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private String scope;
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private String applicationType;
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private RuntimeResourceReader reader;
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public static final Logger logger = LoggerFactory.getLogger(UriResolverManager.class);
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/**
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* Instance a UriResolverManager
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* Precondition: set the scope provider {@link ScopeProvider.instance.get()}
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* The scope is used to look up the generic resource {@link UriResolverMapReader#URI_RESOLVER_MAP} available in the infrastructure to map ApplicationType with its Resolver
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* @param applicationType a key Application Type {@link UriResolverManager#getApplicationTypes()}
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* @throws Exception
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*/
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public UriResolverManager(String applicationType) throws UriResolverMapException, IllegalArgumentException{
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try {
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this.scope = ScopeProvider.instance.get();
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if(this.scope == null)
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throw new UriResolverMapException("Scope is null, set scope provider!");
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this.uriResolverMapReader = new UriResolverMapReader(this.scope);
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this.applicationTypes = uriResolverMapReader.getApplicationTypes();
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} catch (Exception e) {
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throw new UriResolverMapException("Map Application Type - Resources not found in IS");
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}
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if(!this.applicationTypes.containsKey(applicationType)){
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throw new IllegalArgumentException("Application type '"+applicationType +"' not found in Application Types: "+getApplicationTypes());
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}
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this.applicationType = applicationType;
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}
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/**
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*
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* @param parameters the map of the parameters sent with HTTP request (link) generated
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* @param shortLink if true the link is shorted otherwise none
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* @return
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* @throws IllegalArgumentException
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* @throws UriResolverMapException
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*/
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public String getLink(Map<String, String> parameters, boolean shortLink) throws IllegalArgumentException, UriResolverMapException{
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String resourceName = this.applicationTypes.get(applicationType);
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String link;
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if(parameters==null){
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throw new IllegalArgumentException("Input Map parameters is null");
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}
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try {
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if(reader==null){
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logger.info("Runtime Resource Reader is null, istancing...");
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ScopeProvider.instance.set(this.scope);
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reader = new RuntimeResourceReader(this.scope, resourceName);
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}
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List<ServiceParameter> resourceParameters = reader.getServiceParameters();
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//CHECK PARAMETERS
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for (ServiceParameter serviceParameter : resourceParameters) {
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if(serviceParameter.isMandatory()){
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if(!parameters.containsKey(serviceParameter.getKey())){
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throw new IllegalArgumentException("Mandatory service key (parameter) '"+serviceParameter.getKey() +"' not found into input map");
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}
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}
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}
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String baseURI = reader.getServiceBaseURI();
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String params = UrlEncoderUtil.encodeQuery(parameters);
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link = baseURI+"?"+params;
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logger.info("Created HTTP URI request (link): "+link);
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if(shortLink){
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try{
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logger.info("Shortner start..");
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UrlShortener shortener = new UrlShortener(this.scope);
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link = shortener.shorten(link);
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logger.info("Shorted link is: "+link);
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}catch(Exception e){
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logger.warn("An error occurred on shortener the link ",e);
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}
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}
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} catch (IllegalArgumentException e){
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throw e;
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} catch (Exception e) {
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logger.error("Uri Resolver error: ", e);
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throw new UriResolverMapException("Uri Resolver error: " +e.getMessage());
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}
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return link;
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}
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/**
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*
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* @return the Application Types available
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*/
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public Set<String> getApplicationTypes(){
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return this.applicationTypes.keySet();
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}
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/**
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*
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* @return a map Application Type - Resource Name
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*/
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public Map<String, String> getCapabilities(){
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return this.applicationTypes;
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}
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}
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