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JavaDoc for servlet classes.

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This commit is contained in:
Michael Jumper
2011-05-15 00:39:47 -07:00
parent 2bb7516d30
commit 9b682770b4
2 changed files with 89 additions and 10 deletions
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43
guacamole-common/src/main/java/net/sourceforge/guacamole/servlet/GuacamoleSession.java
View File

@@ -25,18 +25,31 @@ import javax.servlet.http.HttpSession;
import net.sourceforge.guacamole.GuacamoleException;
import net.sourceforge.guacamole.net.GuacamoleTunnel;
/**
* Provides abstract access to the tunnels associated with a Guacamole session.
*
* @author Michael Jumper
*/
public class GuacamoleSession {
private final HttpSession session;
private ConcurrentMap<String, GuacamoleTunnel> tunnels;
/**
* Creates a new GuacamoleSession, storing and retrieving tunnels from the
* given HttpSession. Note that the true Guacamole session is tied to the
* HttpSession provided, thus creating a new GuacamoleSession does not
* create a new Guacamole session; it merely creates a new object for
* accessing the tunnels of an existing Guacamole session represented by
* the provided HttpSession.
*
* @param session The HttpSession to use as tunnel storage.
* @throws GuacamoleException If session is null.
*/
public GuacamoleSession(HttpSession session) throws GuacamoleException {
if (session == null)
throw new GuacamoleException("User has no session.");
this.session = session;
synchronized (session) {
tunnels = (ConcurrentMap<String, GuacamoleTunnel>) session.getAttribute("GUAC_TUNNELS");
@@ -49,18 +62,30 @@ public class GuacamoleSession {
}
public void invalidate() {
session.invalidate();
}
public void attachTunnel(GuacamoleTunnel tunnel) throws GuacamoleException {
/**
* Attaches the given tunnel to this GuacamoleSession.
* @param tunnel The tunnel to attach to this GucacamoleSession.
*/
public void attachTunnel(GuacamoleTunnel tunnel) {
tunnels.put(tunnel.getUUID().toString(), tunnel);
}
public void detachTunnel(GuacamoleTunnel tunnel) throws GuacamoleException {
/**
* Detaches the given tunnel to this GuacamoleSession.
* @param tunnel The tunnel to detach to this GucacamoleSession.
*/
public void detachTunnel(GuacamoleTunnel tunnel) {
tunnels.remove(tunnel.getUUID().toString());
}
/**
* Returns the tunnel with the given UUID attached to this GuacamoleSession,
* if any.
*
* @param tunnelUUID The UUID of an attached tunnel.
* @return The tunnel corresponding to the given UUID, if attached, or null
* if no such tunnel is attached.
*/
public GuacamoleTunnel getTunnel(String tunnelUUID) {
return tunnels.get(tunnelUUID);
}

56
guacamole-common/src/main/java/net/sourceforge/guacamole/servlet/GuacamoleTunnelServlet.java
View File

@@ -33,7 +33,12 @@ import net.sourceforge.guacamole.GuacamoleException;
import net.sourceforge.guacamole.io.GuacamoleReader;
import net.sourceforge.guacamole.io.GuacamoleWriter;
/**
* A HttpServlet implementing and abstracting the operations required by the
* JavaScript Guacamole client's tunnel.
*
* @author Michael Jumper
*/
public abstract class GuacamoleTunnelServlet extends HttpServlet {
@Override
@@ -117,8 +122,41 @@ public abstract class GuacamoleTunnelServlet extends HttpServlet {
}
/**
* Called whenever the JavaScript Guacamole client makes a connection
* request. It it up to the implementor of this function to define what
* conditions must be met for a tunnel to be configured and returned as a
* result of this connection request (whether some sort of credentials must
* be specified, for example).
*
* @param request The HttpServletRequest associated with the connection
* request received. Any parameters specified along with
* the connection request can be read from this object.
* @return A newly constructed GuacamoleTunnel if successful,
* null otherwise.
* @throws GuacamoleException If an error occurs while constructing the
* GuacamoleTunnel, or if the conditions
* required for connection are not met.
*/
protected abstract GuacamoleTunnel doConnect(HttpServletRequest request) throws GuacamoleException;
/**
* Called whenever the JavaScript Guacamole client makes a read request.
* This function should in general not be overridden, as it already
* contains a proper implementation of the read operation.
*
* @param request The HttpServletRequest associated with the read request
* received.
* @param response The HttpServletResponse associated with the write request
* received. Any data to be sent to the client in response
* to the write request should be written to the response
* body of this HttpServletResponse.
* @param tunnelUUID The UUID of the tunnel to read from, as specified in
* the write request. This tunnel must be attached to
* the Guacamole session.
* @throws GuacamoleException If an error occurs while handling the read
* request.
*/
protected void doRead(HttpServletRequest request, HttpServletResponse response, String tunnelUUID) throws GuacamoleException {
HttpSession httpSession = request.getSession(false);
@@ -178,6 +216,22 @@ public abstract class GuacamoleTunnelServlet extends HttpServlet {
}
/**
* Called whenever the JavaScript Guacamole client makes a write request.
* This function should in general not be overridden, as it already
* contains a proper implementation of the write operation.
*
* @param request The HttpServletRequest associated with the write request
* received. Any data to be written will be specified within
* the body of this request.
* @param response The HttpServletResponse associated with the write request
* received.
* @param tunnelUUID The UUID of the tunnel to write to, as specified in
* the write request. This tunnel must be attached to
* the Guacamole session.
* @throws GuacamoleException If an error occurs while handling the write
* request.
*/
protected void doWrite(HttpServletRequest request, HttpServletResponse response, String tunnelUUID) throws GuacamoleException {
HttpSession httpSession = request.getSession(false);