ManagerServlet (Apache Tomcat 6.0.51 API Documentation)
Keywords: org.apache.catalina.manager.ManagerServlet class

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## org.apache.catalina.manager
Class ManagerServlet

    java.lang.Object
      javax.servlet.GenericServlet
          javax.servlet.http.HttpServlet
              org.apache.catalina.manager.ManagerServlet

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

Direct Known Subclasses:
  HTMLManagerServlet

    public class ManagerServlet

extends javax.servlet.http.HttpServlet
implements ContainerServlet

Servlet that enables remote management of the web applications installed within the same virtual host as this web application is. Normally, this functionality will be protected by a security constraint in the web application deployment descriptor. However, this requirement can be relaxed during testing.

This servlet examines the value returned by `getPathInfo()` and related query parameters to determine what action is being requested. The following actions and parameters (starting after the servlet path) are supported:

- /deploy?config={config-url} - Install and start a new web application, based on the contents of the context configuration file found at the specified URL. The `docBase` attribute of the context configuration file is used to locate the actual WAR or directory containing the application.
- /deploy?config={config-url}&war={war-url}/ - Install and start a new web application, based on the contents of the context configuration file found at `{config-url}`, overriding the `docBase` attribute with the contents of the web application archive found at `{war-url}`.
- /deploy?path=/xxx&war={war-url} - Install and start a new web application attached to context path `/xxx`, based on the contents of the web application archive found at the specified URL.
- /list - List the context paths of all currently installed web applications for this virtual host. Each context will be listed with the following format `path:status:sessions`. Where path is the context path. Status is either running or stopped. Sessions is the number of active Sessions.
- /reload?path=/xxx - Reload the Java classes and resources for the application at the specified path.
- /resources?type=xxxx - Enumerate the available global JNDI resources, optionally limited to those of the specified type (fully qualified Java class name), if available.
- /roles - Enumerate the available security role names and descriptions from the user database connected to the `users` resource reference.
- /serverinfo - Display system OS and JVM properties.
- /sessions - Deprecated. Use expire.
- /expire?path=/xxx - List session idle timeinformation about the web application attached to context path `/xxx` for this virtual host.
- /expire?path=/xxx&idle=mm - Expire sessions for the context path `/xxx` which were idle for at least mm minutes.
- /start?path=/xxx - Start the web application attached to context path `/xxx` for this virtual host.
- /stop?path=/xxx - Stop the web application attached to context path `/xxx` for this virtual host.
- /undeploy?path=/xxx - Shutdown and remove the web application attached to context path `/xxx` for this virtual host, and remove the underlying WAR file or document base directory. (NOTE - This is only allowed if the WAR file or document base is stored in the `appBase` directory of this host, typically as a result of being placed there via the `/deploy` command.

Use `path=/` for the ROOT context.

The syntax of the URL for a web application archive must conform to one of the following patterns to be successfully deployed:

- file:/absolute/path/to/a/directory - You can specify the absolute path of a directory that contains the unpacked version of a web application. This directory will be attached to the context path you specify without any changes.

NOTE - Attempting to reload or remove the application containing this servlet itself will not succeed. Therefore, this servlet should generally be deployed as a separate web application within the virtual host to be managed.

NOTE - For security reasons, this application will not operate when accessed via the invoker servlet. You must explicitly map this servlet with a servlet mapping, and you will always want to protect it with appropriate security constraints as well.

The following servlet initialization parameters are recognized:

- debug - The debugging detail level that controls the amount of information that is logged by this servlet. Default is zero.

Author:
  Craig R. McClanahan, Remy Maucherat
See Also:
  Serialized Form

Field Summary
`protected java.io.File` | `appBase` The host appBase.
`protected java.io.File` | `configBase` Path where context descriptors should be deployed.
`protected Context` | `context` The Context container associated with our web application.
`protected java.io.File` | `contextDescriptors` Path used to store context descriptors.
`protected int` | `debug` The debugging detail level for this servlet.
`protected java.io.File` | `deployed` File object representing the directory into which the deploy() command will store the WAR and context configuration files that have been uploaded.
`protected javax.naming.Context` | `global` The global JNDI `NamingContext` for this server, if available.
`protected Host` | `host` The associated host.
`protected javax.management.MBeanServer` | `mBeanServer` MBean server.
`protected javax.management.ObjectName` | `oname` The associated deployer ObjectName.
`protected static StringManager` | `sm` The string manager for this package.
`protected java.io.File` | `versioned` Path used to store revisions of webapps.
`protected Wrapper` | `wrapper` The Wrapper container associated with this servlet.

Constructor Summary
`ManagerServlet()`

Method Summary
`protected void` | `addServiced(java.lang.String name)` Invoke the addServiced method on the deployer.
`protected void` | `check(java.lang.String name)` Invoke the check method on the deployer.
`static boolean` | `copy(java.io.File src, java.io.File dest)` Copy the specified file or directory to the destination.
`static boolean` | `copyInternal(java.io.File src, java.io.File dest, byte[] buf)` Copy the specified file or directory to the destination.
`protected void` | `deploy(java.io.PrintWriter writer, java.lang.String path, java.lang.String tag)` Install an application for the specified path from the specified web application archive.
`protected void` | `deploy(java.io.PrintWriter writer, java.lang.String path, java.lang.String tag, boolean update, javax.servlet.http.HttpServletRequest request)` Deploy a web application archive (included in the current request) at the specified context path.
`protected void` | `deploy(java.io.PrintWriter writer, java.lang.String config, java.lang.String path, java.lang.String war, boolean update)` Install an application for the specified path from the specified web application archive.
`void` | `destroy()` Finalize this servlet.
`void` | `doGet(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)` Process a GET request for the specified resource.
`void` | `doPut(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)` Process a PUT request for the specified resource.
`protected void` | `expireSessions(java.io.PrintWriter writer, java.lang.String path, javax.servlet.http.HttpServletRequest req)` Extract the expiration request parameter
`protected void` | `findleaks(java.io.PrintWriter writer)` Find potential memory leaks caused by web application reload.
`protected java.io.File` | `getAppBase()` Return a File object representing the "application root" directory for our associated Host.
`protected java.lang.String` | `getConfigFile(java.lang.String path)` Given a context path, get the config file name.
`protected java.lang.String` | `getDocBase(java.lang.String path)` Given a context path, get the doc base.
`Wrapper` | `getWrapper()` Return the Wrapper with which we are associated.
`void` | `init()` Initialize this servlet.
`protected boolean` | `isDeployed(java.lang.String name)` Invoke the isDeployed method on the deployer.
`protected boolean` | `isServiced(java.lang.String name)` Invoke the isServiced method on the deployer.
`protected void` | `list(java.io.PrintWriter writer)` Render a list of the currently active Contexts in our virtual host.
`protected void` | `printResources(java.io.PrintWriter writer, java.lang.String prefix, javax.naming.Context namingContext, java.lang.String type, java.lang.Class clazz)` List the resources of the given context.
`protected void` | `reload(java.io.PrintWriter writer, java.lang.String path)` Reload the web application at the specified context path.
`protected void` | `removeServiced(java.lang.String name)` Invoke the removeServiced method on the deployer.
`protected void` | `resources(java.io.PrintWriter writer, java.lang.String type)` Render a list of available global JNDI resources.
`protected void` | `roles(java.io.PrintWriter writer)` Render a list of security role names (and corresponding descriptions) from the `org.apache.catalina.UserDatabase` resource that is connected to the `users` resource reference.
`protected void` | `save(java.io.PrintWriter writer, java.lang.String path)` Store server configuration.
`protected void` | `serverinfo(java.io.PrintWriter writer)` Writes System OS and JVM properties.
`protected void` | `sessions(java.io.PrintWriter writer, java.lang.String path)` Session information for the web application at the specified context path.
`protected void` | `sessions(java.io.PrintWriter writer, java.lang.String path, int idle)` Session information for the web application at the specified context path.
`void` | `setWrapper(Wrapper wrapper)` Set the Wrapper with which we are associated.
`protected void` | `start(java.io.PrintWriter writer, java.lang.String path)` Start the web application at the specified context path.
`protected void` | `stop(java.io.PrintWriter writer, java.lang.String path)` Stop the web application at the specified context path.
`protected void` | `undeploy(java.io.PrintWriter writer, java.lang.String path)` Undeploy the web application at the specified context path.
`protected void` | `undeployDir(java.io.File dir)` Delete the specified directory, including all of its contents and subdirectories recursively.
`protected void` | `uploadWar(javax.servlet.http.HttpServletRequest request, java.io.File war)` Upload the WAR file included in this request, and store it at the specified file location.

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

Methods inherited from class javax.servlet.GenericServlet
`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

### configBase

    protected java.io.File configBase

  Path where context descriptors should be deployed.

### context

    protected Context context

  The Context container associated with our web application.

### debug

    protected int debug

  The debugging detail level for this servlet.

### deployed

    protected java.io.File deployed

  File object representing the directory into which the deploy() command will store the WAR and context configuration files that have been uploaded.

### versioned

    protected java.io.File versioned

  Path used to store revisions of webapps.

### contextDescriptors

    protected java.io.File contextDescriptors

  Path used to store context descriptors.

### host

    protected Host host

  The associated host.

### appBase

    protected java.io.File appBase

  The host appBase.

### mBeanServer

    protected javax.management.MBeanServer mBeanServer

  MBean server.

### oname

    protected javax.management.ObjectName oname

  The associated deployer ObjectName.

### global

    protected javax.naming.Context global

  The global JNDI `NamingContext` for this server, if available.

### sm

    protected static StringManager sm

  The string manager for this package.

### wrapper

    protected Wrapper wrapper

  The Wrapper container associated with this servlet.

Constructor Detail

### ManagerServlet

    public ManagerServlet()

Method Detail

### getWrapper

    public Wrapper getWrapper()

  Return the Wrapper with which we are associated.

  Specified by:
    `getWrapper` in interface `ContainerServlet`

### setWrapper

    public void setWrapper(Wrapper wrapper)

  Set the Wrapper with which we are associated.

  Specified by:
    `setWrapper` in interface `ContainerServlet`
  Parameters:
    `wrapper` - The new wrapper

### destroy

    public void destroy()

  Finalize this servlet.

  Specified by:
    `destroy` in interface `javax.servlet.Servlet`
  Overrides:
    `destroy` in class `javax.servlet.GenericServlet`

### doGet

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

  Process a GET request for the specified resource.

  Overrides:
    `doGet` in class `javax.servlet.http.HttpServlet`
  Parameters:
    `request` - The servlet request we are processing
    `response` - The servlet response we are creating
  Throws:
    `java.io.IOException` - if an input/output error occurs
    `javax.servlet.ServletException` - if a servlet-specified error occurs
  See Also:
    `ServletResponse.setContentType(java.lang.String)`

### doPut

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

  Process a PUT request for the specified resource.

  Overrides:
    `doPut` in class `javax.servlet.http.HttpServlet`
  Parameters:
    `request` - The servlet request we are processing
    `response` - The servlet response we are creating
  Throws:
    `java.io.IOException` - if an input/output error occurs
    `javax.servlet.ServletException` - if a servlet-specified error occurs

### init

    public void init()
              throws javax.servlet.ServletException

  Initialize this servlet.

  Overrides:
    `init` in class `javax.servlet.GenericServlet`
  Throws:
    `javax.servlet.ServletException` - if an exception occurs that interrupts the servlet's normal operation

### findleaks

    protected void findleaks(java.io.PrintWriter writer)

  Find potential memory leaks caused by web application reload.

### save

    protected void save(java.io.PrintWriter writer,
                        java.lang.String path)

  Store server configuration.

  Parameters:
    `path` - Optional context path to save

### deploy

    protected void deploy(java.io.PrintWriter writer,
                          java.lang.String path,
                          java.lang.String tag,
                          boolean update,
                          javax.servlet.http.HttpServletRequest request)

  Deploy a web application archive (included in the current request) at the specified context path.

  Parameters:
    `writer` - Writer to render results to
    `path` - Context path of the application to be installed
    `tag` - Tag to be associated with the webapp
    `request` - Servlet request we are processing

### deploy

    protected void deploy(java.io.PrintWriter writer,
                          java.lang.String path,
                          java.lang.String tag)

  Install an application for the specified path from the specified web application archive.

  Parameters:
    `writer` - Writer to render results to
    `tag` - Revision tag to deploy from
    `path` - Context path of the application to be installed

### deploy

    protected void deploy(java.io.PrintWriter writer,
                          java.lang.String config,
                          java.lang.String path,
                          java.lang.String war,
                          boolean update)

  Install an application for the specified path from the specified web application archive.

  Parameters:
    `writer` - Writer to render results to
    `config` - URL of the context configuration file to be installed
    `path` - Context path of the application to be installed
    `war` - URL of the web application archive to be installed
    `update` - true to override any existing webapp on the path

### list

    protected void list(java.io.PrintWriter writer)

  Render a list of the currently active Contexts in our virtual host.

  Parameters:
    `writer` - Writer to render to

### reload

    protected void reload(java.io.PrintWriter writer,
                          java.lang.String path)

  Reload the web application at the specified context path.

  Parameters:
    `writer` - Writer to render to
    `path` - Context path of the application to be restarted

### resources

    protected void resources(java.io.PrintWriter writer,
                             java.lang.String type)

  Render a list of available global JNDI resources.

  Parameters:
    `type` - Fully qualified class name of the resource type of interest, or `null` to list resources of all types

### printResources

    protected void printResources(java.io.PrintWriter writer,
                                  java.lang.String prefix,
                                  javax.naming.Context namingContext,
                                  java.lang.String type,
                                  java.lang.Class clazz)

  List the resources of the given context.

### roles

    protected void roles(java.io.PrintWriter writer)

  Render a list of security role names (and corresponding descriptions) from the `org.apache.catalina.UserDatabase` resource that is connected to the `users` resource reference. Typically, this will be the global user database, but can be adjusted if you have different user databases for different virtual hosts.

  Parameters:
    `writer` - Writer to render to

### serverinfo

    protected void serverinfo(java.io.PrintWriter writer)

  Writes System OS and JVM properties.

  Parameters:
    `writer` - Writer to render to

### sessions

    protected void sessions(java.io.PrintWriter writer,
                            java.lang.String path,
                            int idle)

  Session information for the web application at the specified context path. Displays a profile of session lastAccessedTime listing number of sessions for each 10 minute interval up to 10 hours.

  Parameters:
    `writer` - Writer to render to
    `path` - Context path of the application to list session information for
    `idle` - Expire all sessions with idle time ≥ idle for this context

### sessions

    protected void sessions(java.io.PrintWriter writer,
                            java.lang.String path)

  Session information for the web application at the specified context path. Displays a profile of session lastAccessedTime listing number of sessions for each 10 minute interval up to 10 hours.

  Parameters:
    `writer` - Writer to render to
    `path` - Context path of the application to list session information for

### expireSessions

    protected void expireSessions(java.io.PrintWriter writer,
                                  java.lang.String path,
                                  javax.servlet.http.HttpServletRequest req)

  Extract the expiration request parameter

  Parameters:
    `path` -
    `req` -

### start

    protected void start(java.io.PrintWriter writer,
                         java.lang.String path)

  Start the web application at the specified context path.

  Parameters:
    `writer` - Writer to render to
    `path` - Context path of the application to be started

### stop

    protected void stop(java.io.PrintWriter writer,
                        java.lang.String path)

  Stop the web application at the specified context path.

  Parameters:
    `writer` - Writer to render to
    `path` - Context path of the application to be stopped

### undeploy

    protected void undeploy(java.io.PrintWriter writer,
                            java.lang.String path)

  Undeploy the web application at the specified context path.

  Parameters:
    `writer` - Writer to render to
    `path` - Context path of the application to be removed

### getConfigFile

    protected java.lang.String getConfigFile(java.lang.String path)

  Given a context path, get the config file name.

### getDocBase

    protected java.lang.String getDocBase(java.lang.String path)

  Given a context path, get the doc base.

### getAppBase

    protected java.io.File getAppBase()

  Return a File object representing the "application root" directory for our associated Host.

### isDeployed

    protected boolean isDeployed(java.lang.String name)
                          throws java.lang.Exception

  Invoke the isDeployed method on the deployer.

  Throws:
    `java.lang.Exception`

### check

    protected void check(java.lang.String name)
                  throws java.lang.Exception

  Invoke the check method on the deployer.

  Throws:
    `java.lang.Exception`

### isServiced

    protected boolean isServiced(java.lang.String name)
                          throws java.lang.Exception

  Invoke the isServiced method on the deployer.

  Throws:
    `java.lang.Exception`

### addServiced

    protected void addServiced(java.lang.String name)
                        throws java.lang.Exception

  Invoke the addServiced method on the deployer.

  Throws:
    `java.lang.Exception`

### removeServiced

    protected void removeServiced(java.lang.String name)
                           throws java.lang.Exception

  Invoke the removeServiced method on the deployer.

  Throws:
    `java.lang.Exception`

### undeployDir

    protected void undeployDir(java.io.File dir)

  Delete the specified directory, including all of its contents and subdirectories recursively.

  Parameters:
    `dir` - File object representing the directory to be deleted

### uploadWar

    protected void uploadWar(javax.servlet.http.HttpServletRequest request,
                             java.io.File war)
                      throws java.io.IOException

  Upload the WAR file included in this request, and store it at the specified file location.

  Parameters:
    `request` - The servlet request we are processing
    `war` - The file into which we should store the uploaded WAR
  Throws:
    `java.io.IOException` - if an I/O error occurs during processing

### copy

    public static boolean copy(java.io.File src,
                               java.io.File dest)

  Copy the specified file or directory to the destination.

  Parameters:
    `src` - File object representing the source
    `dest` - File object representing the destination

### copyInternal

    public static boolean copyInternal(java.io.File src,
                                       java.io.File dest,
                                       byte[] buf)

  Copy the specified file or directory to the destination.

  Parameters:
    `src` - File object representing the source
    `dest` - File object representing the destination

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