public void doGet(HttpServletRequest request, HttpServletResponse response) {
log.info("doGet(): " + UsageLog.setupRequestContext(request));
// System.out.printf("opendap doGet: req=%s%n%s%n", ServletUtil.getRequest(request),
// ServletUtil.showRequestDetail(this, request));
String path = null;
ReqState rs = getRequestState(request, response);
try {
path = request.getPathInfo();
log.debug("doGet path={}", path);
if (thredds.servlet.Debug.isSet("showRequestDetail"))
log.debug(ServletUtil.showRequestDetail(this, request));
if (path == null) {
log.info(
"doGet(): "
+ UsageLog.closingMessageForRequestContext(HttpServletResponse.SC_NOT_FOUND, -1));
response.sendError(HttpServletResponse.SC_NOT_FOUND);
return;
}
if (baseURI == null) { // first time, set baseURI
URI reqURI = ServletUtil.getRequestURI(request);
// Build base URI from request (rather than hard-coding "/thredds/dodsC/").
String baseUriString = request.getContextPath() + request.getServletPath() + "/";
baseURI = reqURI.resolve(baseUriString);
log.debug("doGet(): baseURI was set = {}", baseURI);
}
if (path.endsWith("latest.xml")) {
DataRootHandler.getInstance().processReqForLatestDataset(this, request, response);
return;
}
// Redirect all catalog requests at the root level.
if (path.equals("/") || path.equals("/catalog.html") || path.equals("/catalog.xml")) {
ServletUtil.sendPermanentRedirect(ServletUtil.getContextPath() + path, request, response);
return;
}
// Make sure catalog requests match a dataRoot before trying to handle.
if (path.endsWith("/") || path.endsWith("/catalog.html") || path.endsWith("/catalog.xml")) {
if (!DataRootHandler.getInstance().hasDataRootMatch(path)) {
log.info(
"doGet(): "
+ UsageLog.closingMessageForRequestContext(HttpServletResponse.SC_NOT_FOUND, -1));
response.sendError(HttpServletResponse.SC_NOT_FOUND);
return;
}
if (!DataRootHandler.getInstance().processReqForCatalog(request, response))
log.error(
"doGet(): "
+ UsageLog.closingMessageForRequestContext(
ServletUtil.STATUS_FORWARD_FAILURE, -1));
return;
}
if (rs != null) {
String dataSet = rs.getDataSet();
String requestSuffix = rs.getRequestSuffix();
if ((dataSet == null) || dataSet.equals("/") || dataSet.equals("")) {
doGetDIR(rs);
} else if (requestSuffix.equalsIgnoreCase("blob")) {
doGetBLOB(rs);
} else if (requestSuffix.equalsIgnoreCase("close")) {
doClose(rs);
} else if (requestSuffix.equalsIgnoreCase("dds")) {
doGetDDS(rs);
} else if (requestSuffix.equalsIgnoreCase("das")) {
doGetDAS(rs);
} else if (requestSuffix.equalsIgnoreCase("ddx")) {
doGetDDX(rs);
} else if (requestSuffix.equalsIgnoreCase("dods")) {
doGetDAP2Data(rs);
} else if (requestSuffix.equalsIgnoreCase("asc")
|| requestSuffix.equalsIgnoreCase("ascii")) {
doGetASC(rs);
} else if (requestSuffix.equalsIgnoreCase("info")) {
doGetINFO(rs);
} else if (requestSuffix.equalsIgnoreCase("html")
|| requestSuffix.equalsIgnoreCase("htm")) {
doGetHTML(rs);
} else if (requestSuffix.equalsIgnoreCase("ver")
|| requestSuffix.equalsIgnoreCase("version")
|| dataSet.equalsIgnoreCase("/version")
|| dataSet.equalsIgnoreCase("/version/")) {
doGetVER(rs);
} else if (dataSet.equalsIgnoreCase("/help")
|| dataSet.equalsIgnoreCase("/help/")
|| dataSet.equalsIgnoreCase("/" + requestSuffix)
|| requestSuffix.equalsIgnoreCase("help")) {
doGetHELP(rs);
} else {
sendErrorResponse(response, HttpServletResponse.SC_BAD_REQUEST, "Unrecognized request");
return;
}
} else {
sendErrorResponse(response, HttpServletResponse.SC_BAD_REQUEST, "Unrecognized request");
return;
}
log.info(UsageLog.closingMessageForRequestContext(HttpServletResponse.SC_OK, -1));
// plain ol' 404
} catch (FileNotFoundException e) {
sendErrorResponse(response, HttpServletResponse.SC_NOT_FOUND, e.getMessage());
// DAP2Exception bad url
} catch (BadURLException e) {
log.info(UsageLog.closingMessageForRequestContext(HttpServletResponse.SC_BAD_REQUEST, -1));
response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
dap2ExceptionHandler(e, rs);
// all other DAP2Exception
} catch (DAP2Exception de) {
int status =
(de.getErrorCode() == DAP2Exception.NO_SUCH_FILE)
? HttpServletResponse.SC_NOT_FOUND
: HttpServletResponse.SC_BAD_REQUEST;
if ((de.getErrorCode() != DAP2Exception.NO_SUCH_FILE) && (de.getErrorMessage() != null))
log.debug(de.getErrorMessage());
log.info(UsageLog.closingMessageForRequestContext(status, -1));
response.setStatus(status);
dap2ExceptionHandler(de, rs);
// parsing, usually the CE
} catch (ParseException pe) {
log.info(UsageLog.closingMessageForRequestContext(HttpServletResponse.SC_BAD_REQUEST, -1));
response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
parseExceptionHandler(pe, response);
// 403 - request too big
} catch (UnsupportedOperationException e) {
sendErrorResponse(response, HttpServletResponse.SC_FORBIDDEN, e.getMessage());
} catch (java.net.SocketException e) {
log.info("SocketException: " + e.getMessage(), e);
log.info(UsageLog.closingMessageForRequestContext(ServletUtil.STATUS_CLIENT_ABORT, -1));
} catch (IOException e) {
String eName =
e.getClass().getName(); // dont want compile time dependency on ClientAbortException
if (eName.equals("org.apache.catalina.connector.ClientAbortException")) {
log.debug("ClientAbortException: " + e.getMessage());
log.info(UsageLog.closingMessageForRequestContext(ServletUtil.STATUS_CLIENT_ABORT, -1));
return;
}
log.error("path= " + path, e);
sendErrorResponse(response, HttpServletResponse.SC_INTERNAL_SERVER_ERROR, e.getMessage());
// everything else
} catch (Throwable t) {
log.error("path= " + path, t);
t.printStackTrace();
sendErrorResponse(response, HttpServletResponse.SC_INTERNAL_SERVER_ERROR, t.getMessage());
}
}
/**
* ************************************************************************ Default handler for
* OPeNDAP ascii requests. Returns OPeNDAP DAP2 data in comma delimited ascii columns for
* ingestion into some not so OPeNDAP enabled application such as MS-Excel. Accepts constraint
* expressions in exactly the same way as the regular OPeNDAP dataserver.
*
* @param request
* @param response
* @param dataSet
* @throws opendap.dap.DAP2Exception
* @throws ParseException
*/
public void sendASCII(HttpServletRequest request, HttpServletResponse response, String dataSet)
throws DAP2Exception, ParseException {
if (Debug.isSet("showResponse"))
System.out.println(
"Sending OPeNDAP ASCII Data For: "
+ dataSet
+ " CE: '"
+ request.getQueryString()
+ "'");
String requestURL, ce;
DConnect2 url;
DataDDS dds;
if (request.getQueryString() == null) {
ce = "";
} else {
ce = "?" + request.getQueryString();
}
int suffixIndex = request.getRequestURL().toString().lastIndexOf(".");
requestURL = request.getRequestURL().substring(0, suffixIndex);
if (Debug.isSet("showResponse")) {
System.out.println("New Request URL Resource: '" + requestURL + "'");
System.out.println("New Request Constraint Expression: '" + ce + "'");
}
try {
if (_Debug) System.out.println("Making connection to .dods service...");
url = new DConnect2(requestURL, true);
if (_Debug) System.out.println("Requesting data...");
dds = url.getData(ce, null, new asciiFactory());
if (_Debug) System.out.println(" ASC DDS: ");
if (_Debug) dds.print(System.out);
PrintWriter pw = new PrintWriter(response.getOutputStream());
PrintWriter pwDebug = new PrintWriter(System.out);
if (dds != null) {
dds.print(pw);
pw.println("---------------------------------------------");
String s = "";
Enumeration e = dds.getVariables();
while (e.hasMoreElements()) {
BaseType bt = (BaseType) e.nextElement();
if (_Debug) ((toASCII) bt).toASCII(pwDebug, true, null, true);
// bt.toASCII(pw,addName,getNAme(),true);
((toASCII) bt).toASCII(pw, true, null, true);
}
} else {
String betterURL =
request.getRequestURL().substring(0, request.getRequestURL().lastIndexOf("."))
+ ".dods?"
+ request.getQueryString();
pw.println("-- ASCII RESPONSE HANDLER PROBLEM --");
pw.println("");
pw.println("The ASCII response handler was unable to obtain requested data set.");
pw.println("");
pw.println("Because this handler calls it's own OPeNDAP server to get the requested");
pw.println("data the source error is obscured.");
pw.println("");
pw.println("To get a better idea of what is going wrong, try requesting the URL:");
pw.println("");
pw.println(" " + betterURL);
pw.println("");
pw.println("And then look carefully at the returned document. Note that if you");
pw.println("are using a browser to access the URL the returned document will");
pw.println("more than likely be treated as a download and written to your");
pw.println("local disk. It should be a file with the extension \".dods\"");
pw.println("");
pw.println("Locate it, open it with a text editor, and find your");
pw.println("way to happiness and inner peace.");
pw.println("");
}
// pw.println("</pre>");
pw.flush();
if (_Debug) pwDebug.flush();
} catch (FileNotFoundException fnfe) {
System.out.println("OUCH! FileNotFoundException: " + fnfe.getMessage());
fnfe.printStackTrace(System.out);
} catch (MalformedURLException mue) {
System.out.println("OUCH! MalformedURLException: " + mue.getMessage());
mue.printStackTrace(System.out);
} catch (IOException ioe) {
System.out.println("OUCH! IOException: " + ioe.getMessage());
ioe.printStackTrace(System.out);
} catch (Throwable t) {
System.out.println("OUCH! Throwable: " + t.getMessage());
t.printStackTrace(System.out);
}
if (_Debug) System.out.println(" GetAsciiHandler done");
}