445 lines
13 KiB
Java
445 lines
13 KiB
Java
/**
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*
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*/
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package org.gcube.informationsystem.resourceregistry.client.proxy;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.StringWriter;
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import java.io.UnsupportedEncodingException;
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import java.net.HttpURLConnection;
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import java.net.URL;
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import java.net.URLEncoder;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Map;
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import java.util.Map.Entry;
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import java.util.UUID;
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import javax.xml.ws.EndpointReference;
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import org.gcube.common.authorization.client.Constants;
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import org.gcube.common.authorization.library.provider.SecurityTokenProvider;
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import org.gcube.common.clients.Call;
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import org.gcube.common.clients.delegates.AsyncProxyDelegate;
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import org.gcube.common.clients.delegates.ProxyDelegate;
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import org.gcube.common.scope.api.ScopeProvider;
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import org.gcube.informationsystem.impl.utils.ISMapper;
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import org.gcube.informationsystem.model.ER;
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import org.gcube.informationsystem.model.ISManageable;
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import org.gcube.informationsystem.model.entity.Entity;
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import org.gcube.informationsystem.model.entity.Resource;
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import org.gcube.informationsystem.resourceregistry.api.exceptions.ExceptionMapper;
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import org.gcube.informationsystem.resourceregistry.api.exceptions.ResourceRegistryException;
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import org.gcube.informationsystem.resourceregistry.api.exceptions.er.ERException;
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import org.gcube.informationsystem.resourceregistry.api.exceptions.er.ERNotFoundException;
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import org.gcube.informationsystem.resourceregistry.api.exceptions.query.InvalidQueryException;
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import org.gcube.informationsystem.resourceregistry.api.exceptions.schema.SchemaException;
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import org.gcube.informationsystem.resourceregistry.api.exceptions.schema.SchemaNotFoundException;
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import org.gcube.informationsystem.resourceregistry.api.rest.AccessPath;
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import org.gcube.informationsystem.types.TypeBinder;
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import org.gcube.informationsystem.types.TypeBinder.TypeDefinition;
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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 Luca Frosini (ISTI - CNR)
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*
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*/
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public class ResourceRegistryClientImpl implements ResourceRegistryClient {
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private static final Logger logger = LoggerFactory
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.getLogger(ResourceRegistryClientImpl.class);
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private final AsyncProxyDelegate<EndpointReference> delegate;
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public static final String PATH_SEPARATOR = "/";
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public final class RREntry<K, V> implements Entry<K, V> {
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private final K key;
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private V value;
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public RREntry(K key, V value) {
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this.key = key;
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this.value = value;
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}
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@Override
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public K getKey() {
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return key;
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}
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@Override
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public V getValue() {
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return value;
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}
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@Override
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public V setValue(V value) {
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V old = this.value;
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this.value = value;
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return old;
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}
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}
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public ResourceRegistryClientImpl(ProxyDelegate<EndpointReference> config) {
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this.delegate = new AsyncProxyDelegate<EndpointReference>(config);
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}
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protected enum HTTPMETHOD {
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GET, POST, PUT, DELETE;
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@Override
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public String toString() {
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return this.name();
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}
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}
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class HTTPInputs {
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public static final String PARAM_STARTER = "?";
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public static final String PARAM_EQUALS = "=";
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public static final String PARAM_SEPARATOR = "&";
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public static final String UTF8 = "UTF-8";
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protected final String path;
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protected final HTTPMETHOD method;
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protected final String urlParameters;
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protected String getParametersDataString(
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List<Map.Entry<String, String>> parameters)
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throws UnsupportedEncodingException {
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if (parameters == null) {
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return null;
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}
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StringBuilder result = new StringBuilder();
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boolean first = true;
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for (Entry<String, String> entry : parameters) {
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if (first) {
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first = false;
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} else {
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result.append(PARAM_SEPARATOR);
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}
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result.append(URLEncoder.encode(entry.getKey(), UTF8));
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result.append(PARAM_EQUALS);
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result.append(URLEncoder.encode(entry.getValue(), UTF8));
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}
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return result.toString();
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}
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/**
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* @param path
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* @param method
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* @param requestProperties
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* @throws UnsupportedEncodingException
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*/
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public HTTPInputs(String path, HTTPMETHOD method,
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List<Entry<String, String>> parameters)
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throws UnsupportedEncodingException {
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super();
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this.path = path;
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this.method = method;
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this.urlParameters = getParametersDataString(parameters);
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}
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/**
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* @return the path
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*/
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public String getPath() {
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return path;
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}
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/**
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* @return the method
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*/
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public HTTPMETHOD getMethod() {
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return method;
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}
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/**
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* @return the urlParameters
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*/
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public String getUrlParameters() {
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return urlParameters;
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}
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}
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class ResourceRegistryClientCall<C> implements Call<EndpointReference, C> {
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protected final Class<C> clazz;
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protected final HTTPInputs httpInputs;
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public ResourceRegistryClientCall(Class<C> clazz, HTTPInputs httpInputs) {
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this.clazz = clazz;
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this.httpInputs = httpInputs;
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}
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protected String getURLStringFromEndpointReference(
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EndpointReference endpoint) throws IOException {
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JaxRSEndpointReference jaxRSEndpointReference = new JaxRSEndpointReference(
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endpoint);
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return jaxRSEndpointReference.toString();
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}
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protected HttpURLConnection getConnection(URL url, HTTPMETHOD method)
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throws Exception {
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/*
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* if(method!=HTTPMETHOD.POST &&
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* httpInputs.getUrlParameters()!=null){
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*/
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url = new URL(url + "?" + httpInputs.getUrlParameters());
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// }
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HttpURLConnection connection = (HttpURLConnection) url
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.openConnection();
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if (SecurityTokenProvider.instance.get() == null) {
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if (ScopeProvider.instance.get() == null) {
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throw new RuntimeException(
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"Null Token and Scope. Please set your token first.");
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}
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connection.setRequestProperty("gcube-scope",
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ScopeProvider.instance.get());
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} else {
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connection.setRequestProperty(Constants.TOKEN_HEADER_ENTRY,
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SecurityTokenProvider.instance.get());
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}
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connection.setDoOutput(true);
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connection.setRequestProperty("Content-type", "application/json");
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connection.setRequestProperty("User-Agent",
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ResourceRegistryClient.class.getSimpleName());
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connection.setRequestMethod(method.toString());
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/*
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* if(method==HTTPMETHOD.POST){ connection.setDoOutput(true);
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* DataOutputStream wr = new
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* DataOutputStream(connection.getOutputStream());
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* wr.writeBytes(httpInputs.getUrlParameters()); wr.flush();
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* wr.close(); }
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*/
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return connection;
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}
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@SuppressWarnings("unchecked")
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@Override
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public C call(EndpointReference endpoint) throws Exception {
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String urlFromEndpointReference = getURLStringFromEndpointReference(endpoint);
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StringBuilder callUrl = new StringBuilder(urlFromEndpointReference);
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callUrl.append(httpInputs.getPath());
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URL url = new URL(callUrl.toString());
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HttpURLConnection connection = getConnection(url, httpInputs.method);
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String responseMessage = connection.getResponseMessage();
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int responseCode = connection.getResponseCode();
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if (responseCode != HttpURLConnection.HTTP_OK) {
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logger.error("Response code for {} is {} : {}",
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connection.getURL(), responseCode,
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responseMessage);
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ResourceRegistryException rre = null;
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try {
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rre = ExceptionMapper.unmarshal(ResourceRegistryException.class, responseMessage);
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}catch (Exception e) {
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rre = new ResourceRegistryException(responseMessage);
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}
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throw rre;
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}else{
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logger.debug("Response code for {} is {} : {}",
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connection.getURL(), responseCode,
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responseMessage);
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}
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StringBuilder result = new StringBuilder();
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try (BufferedReader reader = new BufferedReader(
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new InputStreamReader((InputStream) connection.getContent()))) {
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String line;
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while ((line = reader.readLine()) != null) {
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result.append(line);
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}
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}
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String res = result.toString();
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logger.trace("Server returned content : {}", res);
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if(Boolean.class.isAssignableFrom(clazz)){
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return (C) ((Boolean) Boolean.valueOf(res)) ;
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}else if(ISManageable.class.isAssignableFrom(clazz)){
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return (C) ISMapper.unmarshal((Class<ISManageable>) clazz, res);
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}
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return (C) res;
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}
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}
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@Override
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public <ERType extends ER> ERType getInstance(Class<ERType> clazz, UUID uuid)
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throws ERNotFoundException, ResourceRegistryException {
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String type = clazz.getSimpleName();
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try {
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logger.info("Going to get {} with UUID {}", type, uuid);
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StringWriter stringWriter = new StringWriter();
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stringWriter.append(PATH_SEPARATOR);
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stringWriter.append(AccessPath.ACCESS_PATH_PART);
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stringWriter.append(PATH_SEPARATOR);
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stringWriter.append(AccessPath.INSTANCE_PATH_PART);
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stringWriter.append(PATH_SEPARATOR);
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stringWriter.append(type);
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stringWriter.append(PATH_SEPARATOR);
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stringWriter.append(uuid.toString());
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HTTPInputs httpInputs = new HTTPInputs(stringWriter.toString(),
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HTTPMETHOD.GET, null);
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ResourceRegistryClientCall<ERType> call = new ResourceRegistryClientCall<>(
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clazz, httpInputs);
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ERType erType = delegate.make(call);
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logger.info("Got {} with UUID {} is {}", type, uuid, erType);
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return erType;
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} catch (Exception e) {
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logger.error("Error while getting {} with UUID {}", type, uuid, e);
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throw new ResourceRegistryException(e);
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}
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}
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@Override
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public List<? extends Entity> getInstances(String type,
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Boolean polymorphic) throws ERNotFoundException,
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ResourceRegistryException {
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try {
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logger.info("Going to get all instances of {} ", type);
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StringWriter stringWriter = new StringWriter();
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stringWriter.append(PATH_SEPARATOR);
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stringWriter.append(AccessPath.ACCESS_PATH_PART);
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stringWriter.append(PATH_SEPARATOR);
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stringWriter.append(AccessPath.INSTANCES_PATH_PART);
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stringWriter.append(PATH_SEPARATOR);
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stringWriter.append(type);
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List<Entry<String, String>> parameters = new ArrayList<>();
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parameters.add(new RREntry<String, String>(
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AccessPath.POLYMORPHIC_PARAM, polymorphic.toString()));
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HTTPInputs httpInputs = new HTTPInputs(stringWriter.toString(),
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HTTPMETHOD.GET, parameters);
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ResourceRegistryClientCall<String> call = new ResourceRegistryClientCall<>(
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String.class, httpInputs);
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String ret = delegate.make(call);
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logger.info("Got instances of {} are {}", type, ret);
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return ISMapper.unmarshalList(Entity.class, ret);
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} catch (Exception e) {
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logger.error("Error while getting {} instances", type, e);
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throw new ResourceRegistryException(e);
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}
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}
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@Override
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public List<Resource> getInstancesFromEntity(
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String relationType, Boolean polymorphic, UUID reference,
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Direction direction) throws ERException, SchemaException,
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ResourceRegistryException {
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try {
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logger.info("Going to get all instances of {} from/to {}", relationType,
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reference.toString());
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StringWriter stringWriter = new StringWriter();
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stringWriter.append(PATH_SEPARATOR);
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stringWriter.append(AccessPath.ACCESS_PATH_PART);
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stringWriter.append(PATH_SEPARATOR);
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stringWriter.append(AccessPath.INSTANCES_PATH_PART);
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stringWriter.append(PATH_SEPARATOR);
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stringWriter.append(relationType);
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List<Entry<String, String>> parameters = new ArrayList<>();
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parameters.add(new RREntry<String, String>(
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AccessPath.POLYMORPHIC_PARAM, polymorphic.toString()));
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parameters.add(new RREntry<String, String>(AccessPath.REFERENCE,
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reference.toString()));
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parameters.add(new RREntry<String, String>(AccessPath.DIRECTION,
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direction.toString()));
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HTTPInputs httpInputs = new HTTPInputs(stringWriter.toString(),
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HTTPMETHOD.GET, parameters);
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ResourceRegistryClientCall<String> call = new ResourceRegistryClientCall<>(
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String.class, httpInputs);
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String ret = delegate.make(call);
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logger.info("Got instances of {} from/to {} are {}", relationType,
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reference.toString(), ret);
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return ISMapper.unmarshalList(Resource.class, ret);
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} catch (Exception e) {
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logger.error("Error while getting instances of {} from/to {}", relationType, e);
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throw new ResourceRegistryException(e);
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}
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}
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@Override
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public <ISM extends ISManageable> List<TypeDefinition> getSchema(
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Class<ISM> clazz, Boolean polymorphic)
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throws SchemaNotFoundException {
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String type = clazz.getSimpleName();
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try {
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logger.info("Going to get {} schema", type);
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StringWriter stringWriter = new StringWriter();
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stringWriter.append(PATH_SEPARATOR);
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stringWriter.append(AccessPath.ACCESS_PATH_PART);
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stringWriter.append(PATH_SEPARATOR);
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stringWriter.append(AccessPath.SCHEMA_PATH_PART);
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stringWriter.append(PATH_SEPARATOR);
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stringWriter.append(type);
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List<Entry<String, String>> parameters = new ArrayList<>();
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parameters.add(new RREntry<String, String>(
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AccessPath.POLYMORPHIC_PARAM, polymorphic.toString()));
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HTTPInputs httpInputs = new HTTPInputs(stringWriter.toString(),
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HTTPMETHOD.GET, parameters);
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ResourceRegistryClientCall<String> call = new ResourceRegistryClientCall<>(
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String.class, httpInputs);
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String schema = delegate.make(call);
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logger.info("Got schema for {} is {}", type, schema);
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return TypeBinder.deserializeTypeDefinitions(schema);
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} catch (Exception e) {
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logger.error("Error while getting {}schema for {}",
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polymorphic ? AccessPath.POLYMORPHIC_PARAM + " " : "",
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type, e);
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throw new SchemaNotFoundException(e);
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}
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}
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@Override
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public String query(String query, int limit, String fetchPlan)
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throws InvalidQueryException {
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ResourceRegistryQuery rrq = new ResourceRegistryQuery(delegate);
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return rrq.query(query, limit, fetchPlan);
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}
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}
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