public static Trans getTrans(
final Configuration conf, final String transXml, boolean singleThreaded)
throws KettleException {
initKettleEnvironment(conf);
TransConfiguration transConfiguration = TransConfiguration.fromXML(transXml);
TransMeta transMeta = transConfiguration.getTransMeta();
String carteObjectId = UUID.randomUUID().toString();
SimpleLoggingObject servletLoggingObject =
new SimpleLoggingObject("HADOOP_MAPPER", LoggingObjectType.CARTE, null); // $NON-NLS-1$
servletLoggingObject.setContainerObjectId(carteObjectId);
TransExecutionConfiguration executionConfiguration =
transConfiguration.getTransExecutionConfiguration();
servletLoggingObject.setLogLevel(executionConfiguration.getLogLevel());
if (singleThreaded) {
// Set the type to single threaded in case the user forgot...
//
transMeta.setTransformationType(TransformationType.SingleThreaded);
// Disable thread priority management as it will slow things down needlessly.
// The single threaded engine doesn't use threads and doesn't need row locking.
//
transMeta.setUsingThreadPriorityManagment(false);
} else {
transMeta.setTransformationType(TransformationType.Normal);
}
return new Trans(transMeta, servletLoggingObject);
}
/**
* <div id="mindtouch">
*
* <h1>/kettle/startJob</h1>
*
* <a name="GET"></a>
*
* <h2>GET</h2>
*
* <p>Starts the job. If the job cannot be started, an error is returned.
*
* <p><b>Example Request:</b><br>
*
* <pre function="syntax.xml">
* GET /kettle/startJob/?name=dummy_job&xml=Y
* </pre>
*
* <h3>Parameters</h3>
*
* <table class="pentaho-table">
* <tbody>
* <tr>
* <th>name</th>
* <th>description</th>
* <th>type</th>
* </tr>
* <tr>
* <td>name</td>
* <td>Name of the job to be executed.</td>
* <td>query</td>
* </tr>
* <tr>
* <td>xml</td>
* <td>Boolean flag which sets the output format required. Use <code>Y</code> to receive XML response.</td>
* <td>boolean, optional</td>
* </tr>
* <tr>
* <td>id</td>
* <td>Carte job ID of the job to be executed. This parameter is optional when xml=Y is used.</td>
* <td>query, optional</td>
* </tr>
* </tbody>
* </table>
*
* <h3>Response Body</h3>
*
* <table class="pentaho-table">
* <tbody>
* <tr>
* <td align="right">text:</td>
* <td>HTML</td>
* </tr>
* <tr>
* <td align="right">media types:</td>
* <td>text/xml, text/html</td>
* </tr>
* </tbody>
* </table>
*
* <p>Response XML or HTML containing operation result. When using xml=Y <code>result</code> field
* indicates whether operation was successful (<code>OK</code>) or not (<code>ERROR</code>).
*
* <p><b>Example Response:</b>
*
* <pre function="syntax.xml">
* <?xml version="1.0" encoding="UTF-8"?>
* <webresult>
* <result>OK</result>
* <message>Job [dummy_job] was started.</message>
* <id>abd61143-8174-4f27-9037-6b22fbd3e229</id>
* </webresult>
* </pre>
*
* <h3>Status Codes</h3>
*
* <table class="pentaho-table">
* <tbody>
* <tr>
* <th>code</th>
* <th>description</th>
* </tr>
* <tr>
* <td>200</td>
* <td>Request was processed.</td>
* </tr>
* <tr>
* <td>500</td>
* <td>Internal server error occurs during request processing.</td>
* </tr>
* </tbody>
* </table>
*
* </div>
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
if (isJettyMode() && !request.getContextPath().startsWith(CONTEXT_PATH)) {
return;
}
if (log.isDebug()) {
logDebug(BaseMessages.getString(PKG, "StartJobServlet.Log.StartJobRequested"));
}
String jobName = request.getParameter("name");
String id = request.getParameter("id");
boolean useXML = "Y".equalsIgnoreCase(request.getParameter("xml"));
response.setStatus(HttpServletResponse.SC_OK);
Encoder encoder = ESAPI.encoder();
PrintWriter out = response.getWriter();
if (useXML) {
response.setContentType("text/xml");
response.setCharacterEncoding(Const.XML_ENCODING);
out.print(XMLHandler.getXMLHeader(Const.XML_ENCODING));
} else {
response.setContentType("text/html;charset=UTF-8");
out.println("<HTML>");
out.println("<HEAD>");
out.println("<TITLE>Start job</TITLE>");
out.println(
"<META http-equiv=\"Refresh\" content=\"2;url="
+ convertContextPath(GetStatusServlet.CONTEXT_PATH)
+ "?name="
+ URLEncoder.encode(jobName, "UTF-8")
+ "\">");
out.println("<META http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\">");
out.println("</HEAD>");
out.println("<BODY>");
}
try {
// ID is optional...
//
Job job;
CarteObjectEntry entry;
if (Const.isEmpty(id)) {
// get the first job that matches...
//
entry = getJobMap().getFirstCarteObjectEntry(jobName);
if (entry == null) {
job = null;
} else {
id = entry.getId();
job = getJobMap().getJob(entry);
}
} else {
// Take the ID into account!
//
entry = new CarteObjectEntry(jobName, id);
job = getJobMap().getJob(entry);
}
if (job != null) {
// First see if this job already ran to completion.
// If so, we get an exception is we try to start() the job thread
//
if (job.isInitialized() && !job.isActive()) {
// Re-create the job from the jobMeta
//
// We might need to re-connect to the repository
//
if (job.getRep() != null && !job.getRep().isConnected()) {
if (job.getRep().getUserInfo() != null) {
job.getRep()
.connect(
job.getRep().getUserInfo().getLogin(),
job.getRep().getUserInfo().getPassword());
} else {
job.getRep().connect(null, null);
}
}
// Create a new job object to start from a sane state. Then replace
// the new job in the job map
//
synchronized (getJobMap()) {
JobConfiguration jobConfiguration = getJobMap().getConfiguration(jobName);
String carteObjectId = UUID.randomUUID().toString();
SimpleLoggingObject servletLoggingObject =
new SimpleLoggingObject(CONTEXT_PATH, LoggingObjectType.CARTE, null);
servletLoggingObject.setContainerObjectId(carteObjectId);
Job newJob = new Job(job.getRep(), job.getJobMeta(), servletLoggingObject);
newJob.setLogLevel(job.getLogLevel());
// Discard old log lines from the old job
//
KettleLogStore.discardLines(job.getLogChannelId(), true);
getJobMap().replaceJob(entry, newJob, jobConfiguration);
job = newJob;
}
}
runJob(job);
String message = BaseMessages.getString(PKG, "StartJobServlet.Log.JobStarted", jobName);
if (useXML) {
out.println(new WebResult(WebResult.STRING_OK, message, id).getXML());
} else {
out.println("<H1>" + encoder.encodeForHTML(message) + "</H1>");
out.println(
"<a href=\""
+ convertContextPath(GetJobStatusServlet.CONTEXT_PATH)
+ "?name="
+ URLEncoder.encode(jobName, "UTF-8")
+ "&id="
+ URLEncoder.encode(id, "UTF-8")
+ "\">"
+ BaseMessages.getString(PKG, "JobStatusServlet.BackToJobStatusPage")
+ "</a><p>");
}
} else {
String message =
BaseMessages.getString(PKG, "StartJobServlet.Log.SpecifiedJobNotFound", jobName);
if (useXML) {
out.println(new WebResult(WebResult.STRING_ERROR, message));
} else {
out.println("<H1>" + encoder.encodeForHTML(message) + "</H1>");
out.println(
"<a href=\""
+ convertContextPath(GetStatusServlet.CONTEXT_PATH)
+ "\">"
+ BaseMessages.getString(PKG, "TransStatusServlet.BackToStatusPage")
+ "</a><p>");
}
}
} catch (Exception ex) {
if (useXML) {
out.println(
new WebResult(
WebResult.STRING_ERROR,
BaseMessages.getString(
PKG,
"StartJobServlet.Error.UnexpectedError",
Const.CR + Const.getStackTracker(ex))));
} else {
out.println("<p>");
out.println("<pre>");
out.println(encoder.encodeForHTML(Const.getStackTracker(ex)));
out.println("</pre>");
}
}
if (!useXML) {
out.println("<p>");
out.println("</BODY>");
out.println("</HTML>");
}
}
