/**
* Private constructor is called by singleton creator.
*
* @throws DefaultHttpClientException
*/
private MyExperimentRestClient() throws DefaultHttpClientException {
config = new MyExperimentConfig();
host = config.getProp("myexperiment.host");
user = config.getProp("myexperiment.username");
password = config.getProp("myexperiment.password");
myExpRestClient = new DefaultHttpAuthRestClient("http", host, 80, "");
myExpRestClient.setUser(user);
myExpRestClient.setPassword(password);
}
/**
* Get workflow xml description from myExperiment
*
* @return Workflow object
*/
public Workflow getMyExperimentWorkflow(int wfId) throws DefaultHttpClientException {
Workflow wf = new Workflow();
wf.setWfid(wfId);
String fileName = wfId + ".t2flow";
wf.setFilename(fileName);
// get workflow metadata
if (myExperimentSession != null) {
HttpResponse response =
myExpRestClient.executeGet(
"/workflow.xml?id=" + wfId, "application/xml", myExperimentSession);
int statusCode = response.getStatusLine().getStatusCode();
if (statusCode == 404) {
throw new DefaultHttpClientException(
"Workflow " + wfId + " is not available on myExperiment.");
}
XmlResponseParser responseParser = new XmlResponseParser(response);
if (responseParser == null) {
throw new DefaultHttpClientException("Error while initialising response parser");
}
responseParser.parseResponse();
if (responseParser.isIsParsed()) {
XPathEvaluator xPathEval = new XPathEvaluator(responseParser);
wf.setTitle(getXmlDescrWorkflowProperty(xPathEval, "/workflow/title", false));
wf.setDescription(getXmlDescrWorkflowProperty(xPathEval, "/workflow/description", true));
wf.setMyExperimentContentUri(
getXmlDescrWorkflowProperty(xPathEval, "/workflow/content-uri", false));
wf.setMyExperimentPreviewUri(
getXmlDescrWorkflowProperty(xPathEval, "/workflow/preview", false));
}
} else {
throw new DefaultHttpClientException("MyExperiment-Session is not initialised!");
}
return wf;
}
/**
* Get workflow t2flow input stream from content-uri
*
* @param wf Workflow
* @return t2flow input stream
*/
public InputStream getMyExperimentWorkflowContentStream(Workflow wf)
throws DefaultHttpClientException {
try {
if (myExperimentSession != null) {
if (wf != null) {
String contentUri = wf.getMyExperimentContentUri();
if (contentUri != null) {
URL url = new URL(wf.getMyExperimentContentUri());
HttpResponse wfResponse =
myExpRestClient.executeGet(
url,
"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
myExperimentSession);
return wfResponse.getEntity().getContent();
} else {
throw new DefaultHttpClientException("Invalid workflow or content uri is empty");
}
} else {
throw new DefaultHttpClientException("Invalid workflow object!");
}
} else {
throw new DefaultHttpClientException("MyExperiment-Session is not initialised!");
}
} catch (Exception ex) {
throw new DefaultHttpClientException(ex.getMessage());
}
}
/**
* Intialise myExperiment session
*
* @return Session handler string
*/
public void createNewMyExperimentSession() throws DefaultHttpClientException {
// get myExperiment session
String myExperimentSessionStr = null;
try {
String sessRequest =
"<session><username>"
+ user
+ "</username><password>"
+ password
+ "</password></session>";
HttpResponse sessionResponse =
myExpRestClient.executeStringPost("/session", sessRequest, ContentType.APPLICATION_XML);
InputStream is = sessionResponse.getEntity().getContent();
Header[] headers = sessionResponse.getAllHeaders();
for (int i = 0; i < headers.length; i++) {
Header h = headers[i];
if (h.getName().equals("Set-Cookie")) {
String val = h.getValue();
int end = val.indexOf(";");
myExperimentSessionStr = val.substring(0, end);
}
}
EntityUtils.consume(sessionResponse.getEntity());
myExperimentSession = myExperimentSessionStr;
} catch (Exception ex) {
throw new DefaultHttpClientException(ex.getMessage());
}
}
