com.dpslink.base.servlet

Class ViewServerInfo

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

com.dpslink.base.servlet.ViewServerInfo

All Implemented Interfaces:

java.io.Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public class ViewServerInfo
extends javax.servlet.http.HttpServlet

A standalone servlet for viewing server information (properties and logs).

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected static java.text.DecimalFormat	FMT_TIME The formatter for a request's elapsed time.
private static long	serialVersionUID The class' serialization version id.

Constructor Summary

Constructors

Constructor and Description
ViewServerInfo()

Method Summary

Modifier and Type	Method and Description
void	doGet(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) Handles HTTP GET requests.
void	doPost(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) Handles HTTP POST requests.
private java.lang.String	getSelectedContent(java.lang.String viewname) Returns an html formatted string for the selected view's content.
private java.lang.String	getServerProperties() Returns an html formatted string of the current server properties.
private java.lang.String	getStyleSheet(java.lang.String fontsize) Returns an html formatted string of the style sheet directives used to format the page's output.
private java.lang.String	getSystemProperties() Returns an html formatted string of the current system properties.
private java.lang.String	getViewNameSelects(java.lang.String viewname) Returns an html formatted string of the view name select and option tags for the allowed view selections (properties or the files contained in the configured log file folder.
void	init() Handles servlet initialization.
private void	writePage(javax.servlet.http.HttpServletResponse response, java.lang.String viewname) Writes the view server info page to the response output stream.

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doHead, doOptions, doPut, doTrace, getLastModified, service, service

Methods inherited from class javax.servlet.GenericServlet

destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, 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

The class' serialization version id.

See Also:

Constant Field Values

FMT_TIME

protected static final java.text.DecimalFormat FMT_TIME

The formatter for a request's elapsed time.

Constructor Detail

ViewServerInfo

public ViewServerInfo()

Method Detail

init

public void init()
          throws javax.servlet.ServletException

Handles servlet initialization. Invoked by the servlet API.

Overrides:

init in class javax.servlet.GenericServlet

Throws:

javax.servlet.ServletException - - if an error occurs while processing the initialization.

doGet

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

Handles HTTP GET requests. Invoked by the servlet API.

Overrides:

doGet in class javax.servlet.http.HttpServlet

Parameters:

request - (HttpServletRequest) The servlet's incoming request.

response - (HttpServletResponse) The servlet's outgoing response.

Throws:

java.io.IOException - - if an error occurs while processing the request or response.

javax.servlet.ServletException - - if an error occurs while processing the request or response.

doPost

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

Handles HTTP POST requests. Invoked by the servlet API.

Overrides:

doPost in class javax.servlet.http.HttpServlet

Parameters:

request - (HttpServletRequest) The servlet's incoming request.

response - (HttpServletResponse) The servlet's outgoing response.

Throws:

java.io.IOException - - if an error occurs while processing the request or response.

javax.servlet.ServletException - - if an error occurs while processing the request or response.

writePage

private void writePage(javax.servlet.http.HttpServletResponse response,
                       java.lang.String viewname)
                throws java.io.IOException

Writes the view server info page to the response output stream.

Parameters:

response - (HttpServletResponse) The servlet's outgoing response.

viewname - (String) The submitted view name.

Throws:

java.io.IOException - - if an error occurs while processing the response.

getViewNameSelects

private java.lang.String getViewNameSelects(java.lang.String viewname)

Returns an html formatted string of the view name select and option tags for the allowed view selections (properties or the files contained in the configured log file folder. Auto-selects the option for the given name.

Parameters:

viewname - (String) The submitted view name.

Returns:

String - The view name select and option tags.

getSelectedContent

private java.lang.String getSelectedContent(java.lang.String viewname)

Returns an html formatted string for the selected view's content.

Parameters:

viewname - (String) The submitted view name.

Returns:

String - The view's content.

getStyleSheet

private java.lang.String getStyleSheet(java.lang.String fontsize)

Returns an html formatted string of the style sheet directives used to format the page's output.

Parameters:

fontsize - (String) The font size to use.

Returns:

String - The style sheet directives.

getServerProperties

private java.lang.String getServerProperties()

Returns an html formatted string of the current server properties.

Returns:

String - The current server properties.

getSystemProperties

private java.lang.String getSystemProperties()

Returns an html formatted string of the current system properties.

Returns:

String - The current system properties.