86 lines
3.0 KiB
Java
86 lines
3.0 KiB
Java
package org.gcube.resources.discovery.icclient.stubs;
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import java.io.BufferedReader;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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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.nio.charset.StandardCharsets;
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import javax.net.ssl.HttpsURLConnection;
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import org.gcube.common.authorization.library.provider.SecurityTokenProvider;
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import org.gcube.common.scope.api.ScopeProvider;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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public class CollectorStubRestImpl implements CollectorStub {
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private static Logger log = LoggerFactory.getLogger(CollectorStubRestImpl.class);
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public static final String TOKEN_HEADER_ENTRY = "gcube-token";
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public static final String SCOPE_HEADER_ENTRY = "gcube-scope";
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private String endopoint;
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public CollectorStubRestImpl(String endopoint) {
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super();
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this.endopoint = endopoint;
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}
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@Override
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public String execute(String query) throws MalformedQueryException {
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//final String methodPath = "/search/";
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final String queryParameter = "query";
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try {
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StringBuilder callUrl = new StringBuilder(endopoint).append("?").append(queryParameter).append("=").append(URLEncoder.encode(query, StandardCharsets.UTF_8.toString()));
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URL url = new URL(callUrl.toString());
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HttpURLConnection connection = makeRequest(url, "GET", false);
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connection.setDoInput(true);
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if (connection.getResponseCode()!=200){
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try(BufferedReader reader = new BufferedReader(new InputStreamReader((InputStream)connection.getErrorStream()))){
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StringBuilder error = new StringBuilder();
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String line;
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while((line = reader.readLine()) != null)
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error.append(line);
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throw new Exception("error executing query: "+error.toString());
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}
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} else {
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String toReturn;
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try(BufferedReader reader = new BufferedReader(new InputStreamReader((InputStream)connection.getContent()))){
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StringBuilder result = new StringBuilder();
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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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toReturn = result.toString();
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}
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return toReturn;
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}
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}catch (Exception e) {
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log.error("error executing query",e);
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throw new MalformedQueryException(e.getMessage());
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}
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}
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private HttpURLConnection makeRequest(URL url, String method, boolean includeTokenInHeader) throws Exception{
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HttpURLConnection connection;
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if (url.toString().startsWith("https://"))
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connection = (HttpsURLConnection)url.openConnection();
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else connection = (HttpURLConnection)url.openConnection();
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if (includeTokenInHeader){
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if (SecurityTokenProvider.instance.get()==null) throw new RuntimeException("null token passed");
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connection.setRequestProperty(TOKEN_HEADER_ENTRY,SecurityTokenProvider.instance.get());
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} else {
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if (ScopeProvider.instance.get()==null) throw new RuntimeException("null scope passed");
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connection.setRequestProperty(SCOPE_HEADER_ENTRY,ScopeProvider.instance.get());
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}
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connection.setRequestMethod(method);
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return connection;
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}
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}
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