List of usage examples for org.apache.http.message AbstractHttpMessage getAllHeaders
public Header[] getAllHeaders()
From source file:org.dasein.cloud.opsource.OpSourceMethod.java
public Document invoke() throws CloudException, InternalException { if (logger.isTraceEnabled()) { logger.trace("enter - " + OpSource.class.getName() + ".invoke()"); }//from www .j ava 2 s . co m try { URL url = null; try { url = new URL(endpoint); } catch (MalformedURLException e1) { throw new CloudException(e1); } final String host = url.getHost(); final int urlPort = url.getPort() == -1 ? url.getDefaultPort() : url.getPort(); final String urlStr = url.toString(); DefaultHttpClient httpclient = new DefaultHttpClient(); /** HTTP Authentication */ String uid = new String(provider.getContext().getAccessPublic()); String pwd = new String(provider.getContext().getAccessPrivate()); /** Type of authentication */ List<String> authPrefs = new ArrayList<String>(2); authPrefs.add(AuthPolicy.BASIC); httpclient.getParams().setParameter("http.auth.scheme-pref", authPrefs); httpclient.getCredentialsProvider().setCredentials(new AuthScope(host, urlPort, null), new UsernamePasswordCredentials(uid, pwd)); if (wire.isDebugEnabled()) { wire.debug("--------------------------------------------------------------> " + urlStr); wire.debug(""); } AbstractHttpMessage method = this.getMethod(parameters.get(OpSource.HTTP_Method_Key), urlStr); method.setParams(new BasicHttpParams().setParameter(urlStr, url)); /** Set headers */ method.addHeader(OpSource.Content_Type_Key, parameters.get(OpSource.Content_Type_Key)); /** POST/PUT method specific logic */ if (method instanceof HttpEntityEnclosingRequest) { HttpEntityEnclosingRequest entityEnclosingMethod = (HttpEntityEnclosingRequest) method; String requestBody = parameters.get(OpSource.HTTP_Post_Body_Key); if (requestBody != null) { if (wire.isDebugEnabled()) { wire.debug(requestBody); } AbstractHttpEntity entity = new ByteArrayEntity(requestBody.getBytes()); entity.setContentType(parameters.get(OpSource.Content_Type_Key)); entityEnclosingMethod.setEntity(entity); } else { throw new CloudException("The request body is null for a post request"); } } /** Now parse the xml */ try { HttpResponse httpResponse; int status; if (wire.isDebugEnabled()) { for (org.apache.http.Header header : method.getAllHeaders()) { wire.debug(header.getName() + ": " + header.getValue()); } } /** Now execute the request */ APITrace.trace(provider, method.toString() + " " + urlStr); httpResponse = httpclient.execute((HttpUriRequest) method); status = httpResponse.getStatusLine().getStatusCode(); if (wire.isDebugEnabled()) { wire.debug("invoke(): HTTP Status " + httpResponse.getStatusLine().getStatusCode() + " " + httpResponse.getStatusLine().getReasonPhrase()); } org.apache.http.Header[] headers = httpResponse.getAllHeaders(); HttpEntity entity = httpResponse.getEntity(); if (wire.isDebugEnabled()) { wire.debug("HTTP xml status code ---------" + status); for (org.apache.http.Header h : headers) { if (h.getValue() != null) { wire.debug(h.getName() + ": " + h.getValue().trim()); } else { wire.debug(h.getName() + ":"); } } /** Can not enable this line, otherwise the entity would be empty*/ // wire.debug("OpSource Response Body for request " + urlStr + " = " + EntityUtils.toString(entity)); wire.debug("-----------------"); } if (entity == null) { parseError(status, "Empty entity"); } String responseBody = EntityUtils.toString(entity); if (status == HttpStatus.SC_OK) { InputStream input = null; try { input = new ByteArrayInputStream(responseBody.getBytes("UTF-8")); if (input != null) { Document doc = null; try { doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(input); if (wire.isDebugEnabled()) { try { TransformerFactory transfac = TransformerFactory.newInstance(); Transformer trans = transfac.newTransformer(); trans.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes"); trans.setOutputProperty(OutputKeys.INDENT, "yes"); StringWriter sw = new StringWriter(); StreamResult result = new StreamResult(sw); DOMSource source = new DOMSource(doc); trans.transform(source, result); String xmlString = sw.toString(); wire.debug(xmlString); } catch (Exception ex) { ex.printStackTrace(); } } } catch (Exception ex) { ex.printStackTrace(); logger.debug(ex.toString(), ex); } return doc; } } catch (IOException e) { logger.error( "invoke(): Failed to read xml error due to a cloud I/O error: " + e.getMessage()); throw new CloudException(e); } /* catch( SAXException e ) { throw new CloudException(e); } catch( ParserConfigurationException e ) { throw new InternalException(e); } */ } else if (status == HttpStatus.SC_NOT_FOUND) { throw new CloudException("An internal error occured: The endpoint was not found"); } else { if (responseBody != null) { parseError(status, responseBody); Document parsedError = null; if (!responseBody.contains("<HR")) { parsedError = DocumentBuilderFactory.newInstance().newDocumentBuilder() .parse(new ByteArrayInputStream(responseBody.getBytes("UTF-8"))); if (wire.isDebugEnabled()) { try { TransformerFactory transfac = TransformerFactory.newInstance(); Transformer trans = transfac.newTransformer(); trans.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes"); trans.setOutputProperty(OutputKeys.INDENT, "yes"); StringWriter sw = new StringWriter(); StreamResult result = new StreamResult(sw); DOMSource source = new DOMSource(parsedError); trans.transform(source, result); String xmlString = sw.toString(); wire.debug(xmlString); } catch (Exception ex) { ex.printStackTrace(); } } } else logger.debug("Error message was unparsable"); return parsedError; } } } catch (ParseException e) { throw new CloudException(e); } catch (SAXException e) { throw new CloudException(e); } catch (IOException e) { e.printStackTrace(); throw new CloudException(e); } catch (ParserConfigurationException e) { throw new CloudException(e); } finally { httpclient.getConnectionManager().shutdown(); } } finally { if (logger.isTraceEnabled()) { logger.trace("exit - " + OpSource.class.getName() + ".invoke()"); } if (wire.isDebugEnabled()) { wire.debug(""); wire.debug("--------------------------------------------------------------> " + endpoint); } } return null; }