1 package jalview.ws.rest;
3 import jalview.bin.Cache;
4 import jalview.io.FileParse;
5 import jalview.io.packed.DataProvider;
6 import jalview.io.packed.ParsePackedSet;
7 import jalview.io.packed.SimpleDataProvider;
8 import jalview.io.packed.DataProvider.JvDataType;
9 import jalview.ws.io.mime.JalviewMimeContentHandler;
11 import java.io.BufferedReader;
12 import java.io.IOException;
13 import java.io.InputStreamReader;
14 import java.io.UnsupportedEncodingException;
15 import java.util.ArrayList;
16 import java.util.List;
18 import org.apache.http.HttpEntity;
19 import org.apache.http.HttpResponse;
20 import org.apache.http.client.methods.HttpRequestBase;
21 import org.apache.http.entity.mime.MultipartEntity;
22 import org.apache.james.mime4j.MimeException;
23 import org.apache.james.mime4j.parser.ContentHandler;
24 import org.apache.james.mime4j.parser.MimeStreamParser;
27 * data source instantiated from the response of an httpclient request.
33 public class HttpResultSet extends FileParse
36 private HttpRequestBase cachedRequest;
39 * when set, indicates that en can be recreated by repeating the HttpRequest
42 boolean repeatable = false;
45 * response that is to be parsed as jalview input data
47 private HttpEntity en = null;
50 * (sub)job that produced this result set.
52 private RestJob restJob;
54 public HttpResultSet(RestJob rj, HttpResponse con, HttpRequestBase req)
58 setDataName(rj.getJobId() + " Part " + rj.getJobnum());
65 * construct a set of dataproviders to parse a result set from this service
70 public List<DataProvider> createResultDataProviders()
72 List<DataProvider> dp = new ArrayList<DataProvider>();
73 for (JvDataType type : restJob.rsd.getResultDataTypes())
75 dp.add(new SimpleDataProvider(type, this, null));
80 public Object[] parseResultSet() throws Exception, Error
82 List<DataProvider> dp = new ArrayList<DataProvider>();
83 Object[] results = null;
88 "Implementation Error: need to have an HttpResponse to process.");
90 jalview.io.packed.JalviewDataset ds = restJob.newJalviewDataset();
91 // Decide how we deal with content.
92 if (en instanceof MultipartEntity)
94 // Multipart messages should be properly typed, so we parse them as we go.
95 MultipartEntity mpe = (MultipartEntity) en;
97 JalviewMimeContentHandler handler = new JalviewMimeContentHandler(ds);
98 MimeStreamParser parser = new MimeStreamParser();
99 parser.setContentHandler(handler);
102 parser.parse(mpe.getContent());
103 } catch (MimeException me)
106 errormessage = "Couldn't parse message from web service.";
107 Cache.log.warn("Failed to parse MIME multipart content", me);
110 return new ParsePackedSet().getAlignment(ds,
111 handler.getJalviewDataProviders());
115 // Need to use hints from rest service description.
116 dp = createResultDataProviders();
117 ParsePackedSet pps = new ParsePackedSet();
118 return pps.getAlignment(ds, dp);
122 private void initDataSource(HttpResponse con) throws IOException
124 en = con.getEntity();
125 repeatable = en.isRepeatable();
127 if (!(en instanceof MultipartEntity))
129 // assume content is simple text stream that can be read from
130 String enc = (en.getContentEncoding() == null) ? null : en
131 .getContentEncoding().getValue();
132 if (en.getContentType() != null)
134 Cache.log.debug("Result Type: " + en.getContentType().toString());
138 Cache.log.debug("No Result Type Specified.");
140 if (enc == null || enc.length() < 1)
142 Cache.log.debug("Assuming 'Default' Result Encoding.");
146 Cache.log.debug("Result Encoded as : " + enc);
148 // attempt to identify file and construct an appropriate DataSource
149 // identifier for it.
151 // Mime-Multipart or single content type will be expected.
152 // if (enc.equals(org.apache.http.client.utils.)))
153 InputStreamReader br = null;
156 br = (enc != null) ? new InputStreamReader(en.getContent(), enc)
157 : new InputStreamReader(en.getContent());
158 } catch (UnsupportedEncodingException e)
160 Cache.log.error("Can't handle encoding '" + enc
161 + "' for response from webservice.", e);
164 errormessage = "Can't handle encoding for response from webservice";
169 dataIn = new BufferedReader(br);
176 protected void finalize() throws Throwable
179 cachedRequest = null;
186 } catch (Exception e)