UploadServlet (DHD Multimedia Gallery V1.57.21 Javadoc)

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org.hd.d.pg2k.webSvr.upload
Class UploadServlet

java.lang.Object
  javax.servlet.GenericServlet
      javax.servlet.http.HttpServlet
          org.hd.d.pg2k.webSvr.upload.UploadServlet

All Implemented Interfaces:: java.io.Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public final class UploadServlet
extends javax.servlet.http.HttpServlet
extends javax.servlet.http.HttpServlet

This is the servlet that accepts uploads from non-browser sources. This is used by the JWS-based uploader.

This should coexist with the HTML/JSP/browser-based uploader, and respect at least the same security and safety restrictions.

This will respond only to POST requests for efficiency and security.

The general form of the protocol for upload is:

The client sends authentication credentials.
The server sends a reject and drops the connection, else an OK [and the current space available] [and the hashes of all items in the upload area].
The client then sends, one per exhibit:
- The full proposed exhibit name.
- The exhibit hash.
- The exhibit description, if any.
- The exhibit data.
The server responds with an OK (naming the accepted exhibit to avoid ambiguity) or reject, dropping the connection.
If the connection remains idle too long, or for any other reason, the server may asynchronously send a "reject" and drop the connection.
The client, when it has no more to upload, may send a "close" request, wait for a response, and then drop the connection.

See Also:: Serialized Form

Field Summary
`private static long`	`serialVersionUID` Unique Serialisation class ID generated by http://random.hd.org/.

Constructor Summary
`UploadServlet()`

Method Summary
`void`	`doPost(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)` Respond to a POST request for the content served by this servlet.
`private static DataSourceBean`	`getDataSource(javax.servlet.ServletConfig config, javax.servlet.http.HttpServletRequest request)` Get singleton (per-servlet-context) data pipeline/cache instance.

Methods inherited from class javax.servlet.http.HttpServlet
`doDelete, doGet, doHead, doOptions, doPut, doTrace, getLastModified, service, service`

Methods inherited from class javax.servlet.GenericServlet
`destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, init, log, log`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

serialVersionUID

private static final long serialVersionUID

Unique Serialisation class ID generated by http://random.hd.org/.

See Also:: Constant Field Values

Constructor Detail

UploadServlet

public UploadServlet()

Method Detail

getDataSource

private static DataSourceBean getDataSource(javax.servlet.ServletConfig config,
                                            javax.servlet.http.HttpServletRequest request)

Get singleton (per-servlet-context) data pipeline/cache instance. The config parameter must not be null, but for some operations (such as calling destroy()) request can be null.

doPost

public void doPost(javax.servlet.http.HttpServletRequest request,
                   javax.servlet.http.HttpServletResponse response)
            throws java.io.IOException

Respond to a POST request for the content served by this servlet.

Overrides:: doPost in class javax.servlet.http.HttpServlet

Parameters:: request - The servlet request we are processing; response - The servlet response we are producing
Throws:: java.io.IOException - if an input/output error occurs