2 * Jalview - A Sequence Alignment Editor and Viewer (Version 2.8.2)
3 * Copyright (C) 2014 The Jalview Authors
5 * This file is part of Jalview.
7 * Jalview is free software: you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation, either version 3
10 * of the License, or (at your option) any later version.
12 * Jalview is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty
14 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR
15 * PURPOSE. See the GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Jalview. If not, see <http://www.gnu.org/licenses/>.
19 * The Jalview Authors are detailed in the 'AUTHORS' file.
21 package jalview.ws.rest;
23 import jalview.bin.Cache;
24 import jalview.io.FileParse;
25 import jalview.io.packed.DataProvider;
26 import jalview.io.packed.ParsePackedSet;
27 import jalview.io.packed.SimpleDataProvider;
28 import jalview.io.packed.DataProvider.JvDataType;
29 import jalview.ws.io.mime.JalviewMimeContentHandler;
31 import java.io.BufferedReader;
32 import java.io.IOException;
33 import java.io.InputStreamReader;
34 import java.io.UnsupportedEncodingException;
35 import java.util.ArrayList;
36 import java.util.List;
38 import org.apache.http.HttpEntity;
39 import org.apache.http.HttpResponse;
40 import org.apache.http.client.methods.HttpRequestBase;
41 import org.apache.http.entity.mime.MultipartEntity;
42 import org.apache.james.mime4j.MimeException;
43 import org.apache.james.mime4j.parser.MimeStreamParser;
46 * data source instantiated from the response of an httpclient request.
52 public class HttpResultSet extends FileParse
55 private HttpRequestBase cachedRequest;
58 * when set, indicates that en can be recreated by repeating the HttpRequest
61 boolean repeatable = false;
64 * response that is to be parsed as jalview input data
66 private HttpEntity en = null;
69 * (sub)job that produced this result set.
71 private RestJob restJob;
73 public HttpResultSet(RestJob rj, HttpResponse con, HttpRequestBase req)
77 setDataName(rj.getJobId() + " Part " + rj.getJobnum());
84 * construct a set of dataproviders to parse a result set from this service
89 public List<DataProvider> createResultDataProviders()
91 List<DataProvider> dp = new ArrayList<DataProvider>();
92 for (JvDataType type : restJob.rsd.getResultDataTypes())
94 dp.add(new SimpleDataProvider(type, this, null));
100 * parses the results of the service output.
102 * @return the result of ParsePackedSet.getAlignment()
106 public Object[] parseResultSet() throws Exception, Error
108 List<DataProvider> dp = new ArrayList<DataProvider>();
109 Object[] results = null;
113 throw new Error(MessageManager.getString("error.implementation_error_need_to_have_httpresponse"));
115 jalview.io.packed.JalviewDataset ds = restJob.newJalviewDataset();
116 // Decide how we deal with content.
117 if (en instanceof MultipartEntity)
119 // Multipart messages should be properly typed, so we parse them as we go.
120 MultipartEntity mpe = (MultipartEntity) en;
122 JalviewMimeContentHandler handler = new JalviewMimeContentHandler(ds);
123 MimeStreamParser parser = new MimeStreamParser();
124 parser.setContentHandler(handler);
127 parser.parse(mpe.getContent());
128 } catch (MimeException me)
131 errormessage = "Couldn't parse message from web service.";
132 Cache.log.warn("Failed to parse MIME multipart content", me);
135 return new ParsePackedSet().getAlignment(ds,
136 handler.getJalviewDataProviders());
140 // Need to use hints from rest service description.
141 dp = createResultDataProviders();
142 ParsePackedSet pps = new ParsePackedSet();
143 return pps.getAlignment(ds, dp);
147 private void initDataSource(HttpResponse con) throws IOException
149 en = con.getEntity();
150 repeatable = en.isRepeatable();
152 if (!(en instanceof MultipartEntity))
154 // assume content is simple text stream that can be read from
155 String enc = (en.getContentEncoding() == null) ? null : en
156 .getContentEncoding().getValue();
157 if (en.getContentType() != null)
159 Cache.log.debug("Result Type: " + en.getContentType().toString());
163 Cache.log.debug("No Result Type Specified.");
165 if (enc == null || enc.length() < 1)
167 Cache.log.debug("Assuming 'Default' Result Encoding.");
171 Cache.log.debug("Result Encoded as : " + enc);
173 // attempt to identify file and construct an appropriate DataSource
174 // identifier for it.
176 // Mime-Multipart or single content type will be expected.
177 // if (enc.equals(org.apache.http.client.utils.)))
178 InputStreamReader br = null;
181 br = (enc != null) ? new InputStreamReader(en.getContent(), enc)
182 : new InputStreamReader(en.getContent());
183 } catch (UnsupportedEncodingException e)
185 Cache.log.error("Can't handle encoding '" + enc
186 + "' for response from webservice.", e);
189 errormessage = "Can't handle encoding for response from webservice";
194 dataIn = new BufferedReader(br);
201 protected void finalize() throws Throwable
204 cachedRequest = null;
211 } catch (Exception e)
221 * @return the URL that this result set read data from.
223 public String getUrl()
227 return cachedRequest.getURI().toURL().toString();
228 } catch (Exception x)