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<html><head><META http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><title>Catalina Functional Specifications - Administrative Apps - Overall Requirements</title><meta name="author" value="Craig McClanahan"><meta name="email" value="craigmcc@apache.org"></head><body bgcolor="#ffffff" text="#000000" link="#525D76" alink="#525D76" vlink="#525D76"><table border="0" width="100%" cellspacing="0"><!--PAGE HEADER--><tr><td><!--PROJECT LOGO--><a href="http://tomcat.apache.org/"><img src="../../../images/tomcat.gif" align="right" alt="
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Catalina Functional Specifications
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" border="0"></a></td><td><font face="arial,helvetica,sanserif"><h1>Apache Tomcat 6.0</h1></font></td><td><!--APACHE LOGO--><a href="http://www.apache.org/"><img src="../../../images/asf-logo.gif" align="right" alt="Apache Logo" border="0"></a></td></tr></table><table border="0" width="100%" cellspacing="4"><!--HEADER SEPARATOR--><tr><td colspan="2"><hr noshade="noshade" size="1"></td></tr><tr><!--RIGHT SIDE MAIN BODY--><td width="80%" valign="top" align="left"><table border="0" width="100%" cellspacing="4"><tr><td align="left" valign="top"><h1>Catalina Functional Specifications</h1><h2>Administrative Apps - Overall Requirements</h2></td><td align="right" valign="top" nowrap="true"><img src="../../../images/void.gif" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Overview"><strong>Overview</strong></a></font></td></tr><tr><td><blockquote>
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<table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Introduction"><strong>Introduction</strong></a></font></td></tr><tr><td><blockquote>
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<p>The purpose of this specification is to define high level requirements
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for administrative applications that can be used to manage the operation
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of a running Tomcat 5 container. A variety of <em>Access Methods</em>
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to the supported administrative functionality shall be supported, to
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meet varying requirements:</p>
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<ul>
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<li><em>As A Scriptable Web Application</em> - The existing
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<code>Manager</code> web application provides a simple HTTP-based
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interface for managing Tomcat through commands that are expressed
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entirely through a request URI. This is useful in environments
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where you wish to script administrative commands with tools that
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can generate HTTP transactions.</li>
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<li><em>As An HTML-Based Web Application</em> - Use an HTML presentation
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to provide a GUI-like user interface for humans to interact with the
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administrative capabilities.</li>
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<li><em>As SOAP-Based Web Services</em> - The operational commands to
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administer Tomcat are made available as web services that utilize
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SOAP message formats.</li>
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<li><em>As Java Management Extensions (JMX) Commands</em> - The operational
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commands to administer Tomcat are made available through JMX APIs,
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for integration into management consoles that utilize them.</li>
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<li><em>Other Remote Access APIs</em> - Other remote access APIs, such
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as JINI, RMI, and CORBA can also be utilized to access administrative
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capabilities.</li>
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</ul>
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<p>Underlying all of the access methods described above, it is assumed
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that the actual operations are performed either directly on the
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corresponding Catalina components (such as calling the
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<code>Deployer.deploy()</code> method to deploy a new web application),
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or through a "business logic" layer that can be shared across all of the
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access methods. This approach minimizes the cost of adding new
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administrative capabilities later -- it is only necessary to add the
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corresponding business logic function, and then write adapters to it for
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all desired access methods.</p>
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<p>The current status of this functional specification is
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<strong>PROPOSED</strong>. It has not yet been discussed and
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agreed to on the TOMCAT-DEV mailing list.</p>
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</blockquote></td></tr></table>
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<table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="External Specifications"><strong>External Specifications</strong></a></font></td></tr><tr><td><blockquote>
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<p>The implementation of this functionality depends on the following
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external specifications:</p>
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<ul>
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<li><a href="http://java.sun.com/products/jdk/idl/index.html">Java
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IDL</a> (for CORBA, included in the JDK)</li>
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<li><a href="http://java.sun.com/products/JavaManagement/index.html">
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Java Management Extensions</a></li>
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<li><a href="http://java.sun.com/products/rmi/index.html">Remote
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Method Invocation</a> (Included in the JDK)</li>
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</ul>
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</blockquote></td></tr></table>
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<table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Implementation Requirements"><strong>Implementation Requirements</strong></a></font></td></tr><tr><td><blockquote>
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<p>The implementation of this functionality shall conform to the
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following requirements:</p>
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<ul>
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<li>To the maximum extent feasible, all administrative functions,
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and the access methods that support them, shall run portably
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on all platforms where Tomcat 5 itself runs.</li>
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<li>In a default Tomcat distribution, all administrative capabilities
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shall be disabled. It shall be necessary for a system
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administrator to specifically enable the desired access methods
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(such as by adding a username/password with a specific role to
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the Tomcat user's database.</li>
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<li>Administrative functions shall be realized as direct calls to
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corresponding Catalina APIs, or through a business logic layer
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that is independent of the access method used to initiate it.</li>
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<li>The common business logic components shall be implemented in
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package <code>org.apache.catalina.admin</code>.</li>
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<li>The common business logic components shall be built as part of the
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standard Catalina build process, and made visible in the
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Catalina class loader.</li>
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<li>The Java components required for each access method shall be
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implemented in subpackages of <code>org.apache.catalina.admin</code>.
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</li>
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<li>The build scripts should treat each access method as optional,
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so that it will be built only if the corresponding required
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APIs are present at build time.</li>
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<li>It shall be possible to save the configured state of the running
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Tomcat container such that this state can be reproduced when the
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container is shut down and restarted.</li>
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<li>Adminstrative commands to start up and shut down the overall
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Tomcat container are <strong>out of scope</strong> for the
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purposes of these applications. It is assumed that other
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(usually platform-specific) mechanisms will be used for container
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startup and shutdown.</li>
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</ul>
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</blockquote></td></tr></table>
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</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Dependencies"><strong>Dependencies</strong></a></font></td></tr><tr><td><blockquote>
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<table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Environmental Dependencies"><strong>Environmental Dependencies</strong></a></font></td></tr><tr><td><blockquote>
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<p>The following environmental dependencies must be met in order for
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administrative applications to operate correctly:</p>
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<ul>
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<li>For access methods that require creation of server sockets, the
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appropriate ports must be configured and available.</li>
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</ul>
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</blockquote></td></tr></table>
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<table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Container Dependencies"><strong>Container Dependencies</strong></a></font></td></tr><tr><td><blockquote>
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<p>Correct operation of administrative applications depends on the
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following specific features of the surrounding container:</p>
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<ul>
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<li>To the maximum extent feasible, Catalina components that offer
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direct administrative APIs and property setters shall support
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"live" changes to their operation, without requiring a container
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restart.</li>
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</ul>
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</blockquote></td></tr></table>
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<table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="External Technologies"><strong>External Technologies</strong></a></font></td></tr><tr><td><blockquote>
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<p>The availability of the following technologies can be assumed
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for the implementation and operation of the various access methods
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and the corresponding administrative business logic:</p>
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<ul>
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<li><a href="http://java.sun.com/j2se/">Java 2 Standard Edition</a>
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(Version 1.2 or later)</li>
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<li><a href="http://www.jcp.org/jsr/detail/154.jsp">Servlet 2.4</a>
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(supported natively by Tomcat 5)</li>
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<li><a href="http://www.jcp.org/jsr/detail/152.jsp">JavaServer Pages 2.0</a>
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(supported natively by Tomcat 5)</li>
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<li><a href="http://jakarta.apache.org/taglibs/doc/standard-doc/intro.html">JavaServer Pages Standard Tag Library 1.0 (Jakarta Taglibs-Standard 1.0.3)</a></li>
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<li><a href="http://jakarta.apache.org/struts/">Struts Framework</a>
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(Version 1.0) - MVC Framework for Web Applications</li>
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<li><strong>TO BE DETERMINED</strong> - Application for hosting SOAP
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based web services</li>
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</ul>
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</blockquote></td></tr></table>
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</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Functionality"><strong>Functionality</strong></a></font></td></tr><tr><td><blockquote>
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<table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Properties of Administered Objects"><strong>Properties of Administered Objects</strong></a></font></td></tr><tr><td><blockquote>
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<p>Functional requirements for administrative applications are specified
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in terms of <em>Administered Objects</em>, whose definitions and detailed
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properties are listed <a href="fs-admin-objects.html">here</a>. In general,
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Administered Objects correspond to components in the Catalina architecture,
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but these objects are defined separately here for the following reasons:</p>
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<ul>
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<li>It is possible that the administrative applications do not expose
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every possible configurable facet of the underlying components.</li>
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<li>In some cases, an Administered Object (from the perspective of an
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administrative operation) is realized by more than one Catalina
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component, at a finer-grained level of detail.</li>
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<li>It is necessary to represent the configuration information for a
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component separately from the component itself (for instance, in
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order to store that configuration information for later use).</li>
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<li>It is necessary to represent configuration information (such as
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a Default Context) when there is no corresponding component instance.
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</li>
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<li>Administered Objects, when realized as Java classes, will include
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methods for administrative operations that have no correspondence
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to operations performed by the corresponding actual components.</li>
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</ul>
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<p>It is assumed that the reader is familiar with the overall component
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architecture of Catalina. For further information, see the corresponding
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Developer Documentation. To distinguish names that are used as both
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<em>Administered Objects</em> and <code>Components</code>, different
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font presentations are utilized. Default values for many properties
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are listed in [square brackets].</p>
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</blockquote></td></tr></table>
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<table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Supported Administrative Operations"><strong>Supported Administrative Operations</strong></a></font></td></tr><tr><td><blockquote>
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<p>The administrative operations that are available are described in terms
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of the corresponding Administered Objects (as defined above), in a manner
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that is independent of the access method by which these operations are
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requested. In general, such operations are relevant only in the context
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of a particular Administered Object (and will most likely be realized as
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method calls on the corresponding Administered Object classes), so they
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are organized based on the currently "focused" administered object.
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The available Supported Operations are documented
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<a href="fs-admin-opers.html">here</a>.</p>
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</blockquote></td></tr></table>
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<table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Access Method Specific Requirements"><strong>Access Method Specific Requirements</strong></a></font></td></tr><tr><td><blockquote>
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<h5>Scriptable Web Application</h5>
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<p>An appropriate subset of the administrative operations described above
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shall be implemented as commands that can be performed by the "Manager"
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web application. <strong>FIXME</strong> - Enumerate them.</p>
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<p>In addition, this web application shall conform to the following
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requirements:</p>
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<ul>
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<li>All request URIs shall be protected by a security constraint that
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requires security role <code>manager</code> for processing.</li>
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<li>The default user database shall <strong>not</strong> contain any
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user that has been assigned the role <code>manager</code>.</li>
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</ul>
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<h5>HTML-Based Web Application</h5>
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<p>The entire suite of administrative operations described above shall be
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made available through a web application designed for human interaction.
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In addition, this web application shall conform to the following
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requirements:</p>
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<ul>
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<li>Must be implemented using servlet, JSP, and MVC framework technologies
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described under "External Technologies", above.</li>
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<li>Prompts and error messages must be internationalizable to multiple
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languages.</li>
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<li>Rendered HTML must be compatible with Netscape Navigator (verson 4.7
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or later) and Internet Explorer (version 5.0 or later).</li>
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</ul>
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</blockquote></td></tr></table>
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</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Testable Assertions"><strong>Testable Assertions</strong></a></font></td></tr><tr><td><blockquote>
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<p><strong>FIXME</strong> - Complete this section.</p>
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</blockquote></td></tr></table></td></tr><!--FOOTER SEPARATOR--><tr><td colspan="2"><hr noshade="noshade" size="1"></td></tr><!--PAGE FOOTER--><tr><td colspan="2"><div align="center"><font color="#525D76" size="-1"><em>
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Copyright © 1999-2006, Apache Software Foundation
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</em></font></div></td></tr></table></body></html>
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