Class ManagerServlet
- All Implemented Interfaces:
Servlet
,ServletConfig
,Serializable
,ContainerServlet
- Direct Known Subclasses:
HTMLManagerServlet
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 thedocBase
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.
- /serverinfo - Display system OS and JVM properties.
- /sessions - Deprecated. Use expire.
- /expire?path=/xxx - List session idle time information 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. - /sslConnectorCiphers - Display diagnostic info on SSL/TLS ciphers that are currently configured for each connector.
- /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. - /threaddump - Write a JVM thread dump.
- /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 theappBase
directory of this host, typically as a result of being placed there via the/deploy
command. - /vminfo - Write some VM info.
- /save - Save the current server configuration to server.xml
- /save?path=/xxx - Save the context configuration for the web application deployed with path
/xxx
to an appropriately named context.xml file in thexmlBase
for the associated Host.
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.
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:
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Field Summary
Modifier and TypeFieldDescriptionprotected File
Path where context descriptors should be deployed.protected Context
The Context container associated with our web application.protected int
The debugging detail level for this servlet.protected Context
The global JNDINamingContext
for this server, if available.protected Host
The associated host.protected MBeanServer
MBean server.protected ObjectName
The associated deployer ObjectName.protected static final StringManager
The string manager for this package.protected File
Path used to store revisions of webapps.protected Wrapper
The Wrapper container associated with this servlet.Fields inherited from class jakarta.servlet.http.HttpServlet
LEGACY_DO_HEAD
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionprotected void
Invoke the check method on the deployer.protected void
deploy
(PrintWriter writer, String config, ContextName cn, String tag, boolean update, HttpServletRequest request, StringManager smClient) Deploy a web application archive (included in the current request) at the specified context path.protected void
deploy
(PrintWriter writer, String config, ContextName cn, String war, boolean update, StringManager smClient) Install an application for the specified path from the specified web application archive.protected void
deploy
(PrintWriter writer, ContextName cn, String tag, StringManager smClient) Install an application for the specified path from the specified web application archive.void
destroy()
Called by the servlet container to indicate to a servlet that the servlet is being taken out of service.void
doGet
(HttpServletRequest request, HttpServletResponse response) Called by the server (via theservice
method) to allow a servlet to handle a GET request.void
doPut
(HttpServletRequest request, HttpServletResponse response) Called by the server (via theservice
method) to allow a servlet to handle a PUT request.protected void
expireSessions
(PrintWriter writer, ContextName cn, HttpServletRequest req, StringManager smClient) Extract the expiration request parameterprotected void
findleaks
(boolean statusLine, PrintWriter writer, StringManager smClient) Find potential memory leaks caused by web application reload.getConnectorCerts
(StringManager smClient) getConnectorCiphers
(StringManager smClient) getConnectorTrustedCerts
(StringManager smClient) Obtain the Wrapper with which this Servlet is associated.void
init()
A convenience method which can be overridden so that there's no need to callsuper.init(config)
.protected boolean
isDeployed
(String name) Invoke the isDeployed method on the deployer.protected void
list
(PrintWriter writer, StringManager smClient) Render a list of the currently active Contexts in our virtual host.protected void
printResources
(PrintWriter writer, String prefix, Context namingContext, String type, StringManager smClient) List the resources of the given context.protected void
reload
(PrintWriter writer, ContextName cn, StringManager smClient) Reload the web application at the specified context path.protected void
removeServiced
(String name) Invoke the removeServiced method on the deployer.protected void
resources
(PrintWriter writer, String type, StringManager smClient) Render a list of available global JNDI resources.protected void
save
(PrintWriter writer, String path, StringManager smClient) Store server configuration.protected void
serverinfo
(PrintWriter writer, StringManager smClient) Writes System OS and JVM properties.protected void
sessions
(PrintWriter writer, ContextName cn, int idle, StringManager smClient) Session information for the web application at the specified context path.void
setWrapper
(Wrapper wrapper) Set the Wrapper with which this Servlet is associated.protected void
sslConnectorCiphers
(PrintWriter writer, StringManager smClient) protected void
sslReload
(PrintWriter writer, String tlsHostName, StringManager smClient) protected void
start
(PrintWriter writer, ContextName cn, StringManager smClient) Start the web application at the specified context path.protected void
stop
(PrintWriter writer, ContextName cn, StringManager smClient) Stop the web application at the specified context path.protected void
threadDump
(PrintWriter writer, StringManager smClient, Enumeration<Locale> requestedLocales) Write a JVM thread dump.protected boolean
tryAddServiced
(String name) Attempt to mark a context as being servicedprotected void
undeploy
(PrintWriter writer, ContextName cn, StringManager smClient) Undeploy the web application at the specified context path.protected void
uploadWar
(PrintWriter writer, HttpServletRequest request, File war, StringManager smClient) Upload the WAR file included in this request, and store it at the specified file location.protected static boolean
validateContextName
(ContextName cn, PrintWriter writer, StringManager smClient) protected void
vmInfo
(PrintWriter writer, StringManager smClient, Enumeration<Locale> requestedLocales) Write some VM info.Methods inherited from class jakarta.servlet.http.HttpServlet
doDelete, doHead, doOptions, doPatch, doPost, doTrace, getLastModified, init, isSensitiveHeader, service, service
Methods inherited from class jakarta.servlet.GenericServlet
getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, log, log
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Field Details
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configBase
Path where context descriptors should be deployed. -
context
The Context container associated with our web application. -
debug
protected int debugThe debugging detail level for this servlet. -
versioned
Path used to store revisions of webapps. -
host
The associated host. -
mBeanServer
MBean server. -
oname
The associated deployer ObjectName. -
global
The global JNDINamingContext
for this server, if available. -
sm
The string manager for this package. -
wrapper
The Wrapper container associated with this servlet.
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Constructor Details
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ManagerServlet
public ManagerServlet()
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Method Details
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getWrapper
Description copied from interface:ContainerServlet
Obtain the Wrapper with which this Servlet is associated.- Specified by:
getWrapper
in interfaceContainerServlet
- Returns:
- The Wrapper with which this Servlet is associated.
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setWrapper
Description copied from interface:ContainerServlet
Set the Wrapper with which this Servlet is associated.- Specified by:
setWrapper
in interfaceContainerServlet
- Parameters:
wrapper
- The new associated Wrapper
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destroy
public void destroy()Description copied from class:jakarta.servlet.GenericServlet
Called by the servlet container to indicate to a servlet that the servlet is being taken out of service. SeeServlet.destroy()
.- Specified by:
destroy
in interfaceServlet
- Overrides:
destroy
in classGenericServlet
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doGet
public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException Description copied from class:jakarta.servlet.http.HttpServlet
Called by the server (via theservice
method) to allow a servlet to handle a GET request.Overriding this method to support a GET request also automatically supports an HTTP HEAD request. A HEAD request is a GET request that returns no body in the response, only the request header fields.
When overriding this method, read the request data, write the response headers, get the response's Writer or output stream object, and finally, write the response data. It's best to include content type and encoding. When using a
PrintWriter
object to return the response, set the content type before accessing thePrintWriter
object.The servlet container must write the headers before committing the response, because in HTTP the headers must be sent before the response body.
Where possible, set the Content-Length header (with the
ServletResponse.setContentLength(int)
method), to allow the servlet container to use a persistent connection to return its response to the client, improving performance. The content length is automatically set if the entire response fits inside the response buffer.When using HTTP 1.1 chunked encoding (which means that the response has a Transfer-Encoding header), do not set the Content-Length header.
The GET method should be safe, that is, without any side effects for which users are held responsible. For example, most form queries have no side effects. If a client request is intended to change stored data, the request should use some other HTTP method.
The GET method should also be idempotent, meaning that it can be safely repeated. Sometimes making a method safe also makes it idempotent. For example, repeating queries is both safe and idempotent, but buying a product online or modifying data is neither safe nor idempotent.
If the request is incorrectly formatted,
doGet
returns an HTTP "Bad Request" message.- Overrides:
doGet
in classHttpServlet
- Parameters:
request
- anHttpServletRequest
object that contains the request the client has made of the servletresponse
- anHttpServletResponse
object that contains the response the servlet sends to the client- Throws:
IOException
- if an input or output error is detected when the servlet handles the GET requestServletException
- if the request for the GET could not be handled- See Also:
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doPut
public void doPut(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException Description copied from class:jakarta.servlet.http.HttpServlet
Called by the server (via theservice
method) to allow a servlet to handle a PUT request. The PUT operation allows a client to place a file on the server and is similar to sending a file by FTP.When overriding this method, leave intact any content headers sent with the request (including Content-Length, Content-Type, Content-Transfer-Encoding, Content-Encoding, Content-Base, Content-Language, Content-Location, Content-MD5, and Content-Range). If your method cannot handle a content header, it must issue an error message (HTTP 501 - Not Implemented) and discard the request. For more information on HTTP 1.1, see RFC 2616 .
This method does not need to be either safe or idempotent. Operations that
doPut
performs can have side effects for which the user can be held accountable. When using this method, it may be useful to save a copy of the affected URL in temporary storage.If the HTTP PUT request is incorrectly formatted,
doPut
returns an HTTP "Bad Request" message.- Overrides:
doPut
in classHttpServlet
- Parameters:
request
- theHttpServletRequest
object that contains the request the client made of the servletresponse
- theHttpServletResponse
object that contains the response the servlet returns to the client- Throws:
IOException
- if an input or output error occurs while the servlet is handling the PUT requestServletException
- if the request for the PUT cannot be handled
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init
Description copied from class:jakarta.servlet.GenericServlet
A convenience method which can be overridden so that there's no need to callsuper.init(config)
.Instead of overriding
GenericServlet.init(ServletConfig)
, simply override this method and it will be called byGenericServlet.init(ServletConfig config)
. TheServletConfig
object can still be retrieved viaGenericServlet.getServletConfig()
.- Overrides:
init
in classGenericServlet
- Throws:
ServletException
- if an exception occurs that interrupts the servlet's normal operation
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findleaks
Find potential memory leaks caused by web application reload.- Parameters:
statusLine
- Print a status linewriter
- The output writersmClient
- StringManager for the client's locale
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sslReload
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vmInfo
protected void vmInfo(PrintWriter writer, StringManager smClient, Enumeration<Locale> requestedLocales) Write some VM info.- Parameters:
writer
- The output writersmClient
- StringManager for the client's localerequestedLocales
- the client's locales
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threadDump
protected void threadDump(PrintWriter writer, StringManager smClient, Enumeration<Locale> requestedLocales) Write a JVM thread dump.- Parameters:
writer
- The output writersmClient
- StringManager for the client's localerequestedLocales
- the client's locales
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sslConnectorCiphers
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save
Store server configuration.- Parameters:
writer
- Destination for any user message(s) during this operationpath
- Optional context path to savesmClient
- i18n support for current client's locale
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deploy
protected void deploy(PrintWriter writer, String config, ContextName cn, String tag, boolean update, HttpServletRequest request, StringManager smClient) Deploy a web application archive (included in the current request) at the specified context path.- Parameters:
writer
- Writer to render results toconfig
- URL of the context configuration file to be installedcn
- Name of the application to be installedtag
- Tag to be associated with the webappupdate
- Flag that indicates that any existing app should be replacedrequest
- Servlet request we are processingsmClient
- i18n messages using the locale of the client
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deploy
Install an application for the specified path from the specified web application archive.- Parameters:
writer
- Writer to render results tocn
- Name of the application to be installedtag
- Revision tag to deploy fromsmClient
- i18n messages using the locale of the client
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deploy
protected void deploy(PrintWriter writer, String config, ContextName cn, String war, boolean update, StringManager smClient) Install an application for the specified path from the specified web application archive.- Parameters:
writer
- Writer to render results toconfig
- URL of the context configuration file to be installedcn
- Name of the application to be installedwar
- URL of the web application archive to be installedupdate
- true to override any existing webapp on the pathsmClient
- i18n messages using the locale of the client
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list
Render a list of the currently active Contexts in our virtual host.- Parameters:
writer
- Writer to render tosmClient
- i18n support for current client's locale
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reload
Reload the web application at the specified context path.- Parameters:
writer
- Writer to render tocn
- Name of the application to be restartedsmClient
- i18n support for current client's locale
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resources
Render a list of available global JNDI resources.- Parameters:
writer
- Writer to render totype
- Fully qualified class name of the resource type of interest, ornull
to list resources of all typessmClient
- i18n support for current client's locale
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printResources
protected void printResources(PrintWriter writer, String prefix, Context namingContext, String type, StringManager smClient) List the resources of the given context.- Parameters:
writer
- Writer to render toprefix
- Path for recursionnamingContext
- The naming context for lookupstype
- Fully qualified class name of the resource type of interest, ornull
to list resources of all typessmClient
- i18n support for current client's locale
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serverinfo
Writes System OS and JVM properties.- Parameters:
writer
- Writer to render tosmClient
- i18n support for current client's locale
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sessions
Session information for the web application at the specified context path. Displays a profile of session thisAccessedTime listing number of sessions for each 10 minute interval up to 10 hours.- Parameters:
writer
- Writer to render tocn
- Name of the application to list session information foridle
- Expire all sessions with idle time > idle for this contextsmClient
- i18n support for current client's locale
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expireSessions
protected void expireSessions(PrintWriter writer, ContextName cn, HttpServletRequest req, StringManager smClient) Extract the expiration request parameter- Parameters:
writer
- Writer to render tocn
- Name of the application to list session information forreq
- The Servlet requestsmClient
- i18n support for current client's locale
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start
Start the web application at the specified context path.- Parameters:
writer
- Writer to render tocn
- Name of the application to be startedsmClient
- i18n support for current client's locale
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stop
Stop the web application at the specified context path.- Parameters:
writer
- Writer to render tocn
- Name of the application to be stoppedsmClient
- i18n support for current client's locale
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undeploy
Undeploy the web application at the specified context path.- Parameters:
writer
- Writer to render tocn
- Name of the application to be removedsmClient
- i18n support for current client's locale
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isDeployed
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check
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tryAddServiced
Attempt to mark a context as being serviced- Parameters:
name
- The context name- Returns:
true
if the application was marked as being serviced andfalse
if the application was already marked as being serviced- Throws:
Exception
- Error invoking the deployer
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removeServiced
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uploadWar
protected void uploadWar(PrintWriter writer, HttpServletRequest request, File war, StringManager smClient) throws IOException Upload the WAR file included in this request, and store it at the specified file location.- Parameters:
writer
- Writer to render torequest
- The servlet request we are processingwar
- The file into which we should store the uploaded WARsmClient
- The StringManager used to construct i18n messages based on the Locale of the client- Throws:
IOException
- if an I/O error occurs during processing
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validateContextName
protected static boolean validateContextName(ContextName cn, PrintWriter writer, StringManager smClient) -
getConnectorCiphers
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getConnectorCerts
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getConnectorTrustedCerts
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