| 1 | <html><head><META http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><title>Catalina Functional Specifications - Administrative Apps - Overall Requirements</title><meta value="Craig McClanahan" name="author"><meta value="craigmcc@apache.org" name="email"></head><body vlink="#525D76" alink="#525D76" link="#525D76" text="#000000" bgcolor="#ffffff"><table cellspacing="0" width="100%" border="0"><!--PAGE HEADER--><tr><td><!--PROJECT LOGO--><a href="http://tomcat.apache.org/"><img border="0" alt=" |
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| 2 | Catalina Functional Specifications |
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| 3 | " align="right" src="../../../images/tomcat.gif"></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 border="0" alt="Apache Logo" align="right" src="../../../images/asf-logo.gif"></a></td></tr></table><table cellspacing="4" width="100%" border="0"><!--HEADER SEPARATOR--><tr><td colspan="2"><hr size="1" noshade></td></tr><tr><!--RIGHT SIDE MAIN BODY--><td align="left" valign="top" width="80%"><table cellspacing="4" width="100%" border="0"><tr><td valign="top" align="left"><h1>Catalina Functional Specifications</h1><h2>Administrative Apps - Overall Requirements</h2></td><td nowrap="true" valign="top" align="right"><img border="0" hspace="0" vspace="0" height="1" width="1" src="../../../images/void.gif"></td></tr></table><table cellpadding="2" cellspacing="0" border="0"><tr><td bgcolor="#525D76"><font face="arial,helvetica.sanserif" color="#ffffff"><a name="Overview"><strong>Overview</strong></a></font></td></tr><tr><td><blockquote> |
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| 4 | |
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| 5 | |
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| 6 | <table cellpadding="2" cellspacing="0" border="0"><tr><td bgcolor="#828DA6"><font face="arial,helvetica.sanserif" color="#ffffff"><a name="Introduction"><strong>Introduction</strong></a></font></td></tr><tr><td><blockquote> |
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| 7 | |
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| 8 | <p>The purpose of this specification is to define high level requirements |
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| 9 | for administrative applications that can be used to manage the operation |
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| 10 | of a running Tomcat 6 container. A variety of <em>Access Methods</em> |
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| 11 | to the supported administrative functionality shall be supported, to |
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| 12 | meet varying requirements:</p> |
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| 13 | <ul> |
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| 14 | <li><em>As A Scriptable Web Application</em> - The existing |
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| 15 | <code>Manager</code> web application provides a simple HTTP-based |
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| 16 | interface for managing Tomcat through commands that are expressed |
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| 17 | entirely through a request URI. This is useful in environments |
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| 18 | where you wish to script administrative commands with tools that |
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| 19 | can generate HTTP transactions.</li> |
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| 20 | <li><em>As An HTML-Based Web Application</em> - Use an HTML presentation |
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| 21 | to provide a GUI-like user interface for humans to interact with the |
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| 22 | administrative capabilities.</li> |
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| 23 | <li><em>As SOAP-Based Web Services</em> - The operational commands to |
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| 24 | administer Tomcat are made available as web services that utilize |
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| 25 | SOAP message formats.</li> |
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| 26 | <li><em>As Java Management Extensions (JMX) Commands</em> - The operational |
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| 27 | commands to administer Tomcat are made available through JMX APIs, |
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| 28 | for integration into management consoles that utilize them.</li> |
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| 29 | <li><em>Other Remote Access APIs</em> - Other remote access APIs, such |
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| 30 | as JINI, RMI, and CORBA can also be utilized to access administrative |
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| 31 | capabilities.</li> |
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| 32 | </ul> |
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| 33 | |
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| 34 | <p>Underlying all of the access methods described above, it is assumed |
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| 35 | that the actual operations are performed either directly on the |
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| 36 | corresponding Catalina components (such as calling the |
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| 37 | <code>Deployer.deploy()</code> method to deploy a new web application), |
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| 38 | or through a "business logic" layer that can be shared across all of the |
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| 39 | access methods. This approach minimizes the cost of adding new |
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| 40 | administrative capabilities later -- it is only necessary to add the |
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| 41 | corresponding business logic function, and then write adapters to it for |
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| 42 | all desired access methods.</p> |
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| 43 | |
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| 44 | <p>The current status of this functional specification is |
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| 45 | <strong>PROPOSED</strong>. It has not yet been discussed and |
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| 46 | agreed to on the TOMCAT-DEV mailing list.</p> |
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| 47 | |
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| 48 | </blockquote></td></tr></table> |
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| 49 | |
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| 50 | |
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| 51 | <table cellpadding="2" cellspacing="0" border="0"><tr><td bgcolor="#828DA6"><font face="arial,helvetica.sanserif" color="#ffffff"><a name="External Specifications"><strong>External Specifications</strong></a></font></td></tr><tr><td><blockquote> |
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| 52 | |
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| 53 | <p>The implementation of this functionality depends on the following |
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| 54 | external specifications:</p> |
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| 55 | <ul> |
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| 56 | <li><a href="http://java.sun.com/products/jdk/idl/index.html">Java |
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| 57 | IDL</a> (for CORBA, included in the JDK)</li> |
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| 58 | <li><a href="http://java.sun.com/products/JavaManagement/index.html"> |
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| 59 | Java Management Extensions</a></li> |
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| 60 | <li><a href="http://java.sun.com/products/rmi/index.html">Remote |
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| 61 | Method Invocation</a> (Included in the JDK)</li> |
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| 62 | </ul> |
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| 63 | |
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| 64 | </blockquote></td></tr></table> |
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| 65 | |
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| 66 | |
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| 67 | <table cellpadding="2" cellspacing="0" border="0"><tr><td bgcolor="#828DA6"><font face="arial,helvetica.sanserif" color="#ffffff"><a name="Implementation Requirements"><strong>Implementation Requirements</strong></a></font></td></tr><tr><td><blockquote> |
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| 68 | |
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| 69 | <p>The implementation of this functionality shall conform to the |
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| 70 | following requirements:</p> |
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| 71 | <ul> |
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| 72 | <li>To the maximum extent feasible, all administrative functions, |
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| 73 | and the access methods that support them, shall run portably |
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| 74 | on all platforms where Tomcat 6 itself runs.</li> |
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| 75 | <li>In a default Tomcat distribution, all administrative capabilities |
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| 76 | shall be disabled. It shall be necessary for a system |
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| 77 | administrator to specifically enable the desired access methods |
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| 78 | (such as by adding a username/password with a specific role to |
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| 79 | the Tomcat user's database.</li> |
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| 80 | <li>Administrative functions shall be realized as direct calls to |
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| 81 | corresponding Catalina APIs, or through a business logic layer |
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| 82 | that is independent of the access method used to initiate it.</li> |
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| 83 | <li>The common business logic components shall be implemented in |
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| 84 | package <code>org.apache.catalina.admin</code>.</li> |
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| 85 | <li>The common business logic components shall be built as part of the |
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| 86 | standard Catalina build process, and made visible in the |
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| 87 | Catalina class loader.</li> |
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| 88 | <li>The Java components required for each access method shall be |
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| 89 | implemented in subpackages of <code>org.apache.catalina.admin</code>. |
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| 90 | </li> |
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| 91 | <li>The build scripts should treat each access method as optional, |
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| 92 | so that it will be built only if the corresponding required |
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| 93 | APIs are present at build time.</li> |
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| 94 | <li>It shall be possible to save the configured state of the running |
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| 95 | Tomcat container such that this state can be reproduced when the |
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| 96 | container is shut down and restarted.</li> |
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| 97 | <li>Adminstrative commands to start up and shut down the overall |
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| 98 | Tomcat container are <strong>out of scope</strong> for the |
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| 99 | purposes of these applications. It is assumed that other |
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| 100 | (usually platform-specific) mechanisms will be used for container |
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| 101 | startup and shutdown.</li> |
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| 102 | </ul> |
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| 103 | |
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| 104 | </blockquote></td></tr></table> |
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| 105 | |
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| 106 | |
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| 107 | </blockquote></td></tr></table><table cellpadding="2" cellspacing="0" border="0"><tr><td bgcolor="#525D76"><font face="arial,helvetica.sanserif" color="#ffffff"><a name="Dependencies"><strong>Dependencies</strong></a></font></td></tr><tr><td><blockquote> |
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| 108 | |
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| 109 | |
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| 110 | <table cellpadding="2" cellspacing="0" border="0"><tr><td bgcolor="#828DA6"><font face="arial,helvetica.sanserif" color="#ffffff"><a name="Environmental Dependencies"><strong>Environmental Dependencies</strong></a></font></td></tr><tr><td><blockquote> |
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| 111 | |
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| 112 | <p>The following environmental dependencies must be met in order for |
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| 113 | administrative applications to operate correctly:</p> |
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| 114 | <ul> |
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| 115 | <li>For access methods that require creation of server sockets, the |
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| 116 | appropriate ports must be configured and available.</li> |
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| 117 | </ul> |
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| 118 | |
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| 119 | </blockquote></td></tr></table> |
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| 120 | |
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| 121 | |
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| 122 | <table cellpadding="2" cellspacing="0" border="0"><tr><td bgcolor="#828DA6"><font face="arial,helvetica.sanserif" color="#ffffff"><a name="Container Dependencies"><strong>Container Dependencies</strong></a></font></td></tr><tr><td><blockquote> |
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| 123 | |
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| 124 | <p>Correct operation of administrative applications depends on the |
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| 125 | following specific features of the surrounding container:</p> |
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| 126 | <ul> |
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| 127 | <li>To the maximum extent feasible, Catalina components that offer |
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| 128 | direct administrative APIs and property setters shall support |
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| 129 | "live" changes to their operation, without requiring a container |
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| 130 | restart.</li> |
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| 131 | </ul> |
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| 132 | |
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| 133 | </blockquote></td></tr></table> |
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| 134 | |
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| 135 | |
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| 136 | <table cellpadding="2" cellspacing="0" border="0"><tr><td bgcolor="#828DA6"><font face="arial,helvetica.sanserif" color="#ffffff"><a name="External Technologies"><strong>External Technologies</strong></a></font></td></tr><tr><td><blockquote> |
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| 137 | |
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| 138 | <p>The availability of the following technologies can be assumed |
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| 139 | for the implementation and operation of the various access methods |
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| 140 | and the corresponding administrative business logic:</p> |
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| 141 | <ul> |
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| 142 | <li><a href="http://java.sun.com/j2se/">Java 2 Standard Edition</a> |
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| 143 | (Version 1.2 or later)</li> |
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| 144 | <li><a href="http://www.jcp.org/jsr/detail/154.jsp">Servlet 2.4</a> |
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| 145 | (supported natively by Tomcat 6)</li> |
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| 146 | <li><a href="http://www.jcp.org/jsr/detail/152.jsp">JavaServer Pages 2.0</a> |
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| 147 | (supported natively by Tomcat 6)</li> |
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| 148 | <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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| 149 | <li><a href="http://jakarta.apache.org/struts/">Struts Framework</a> |
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| 150 | (Version 1.0) - MVC Framework for Web Applications</li> |
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| 151 | <li><strong>TO BE DETERMINED</strong> - Application for hosting SOAP |
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| 152 | based web services</li> |
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| 153 | </ul> |
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| 154 | |
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| 155 | </blockquote></td></tr></table> |
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| 156 | |
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| 157 | |
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| 158 | </blockquote></td></tr></table><table cellpadding="2" cellspacing="0" border="0"><tr><td bgcolor="#525D76"><font face="arial,helvetica.sanserif" color="#ffffff"><a name="Functionality"><strong>Functionality</strong></a></font></td></tr><tr><td><blockquote> |
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| 159 | |
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| 160 | |
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| 161 | <table cellpadding="2" cellspacing="0" border="0"><tr><td bgcolor="#828DA6"><font face="arial,helvetica.sanserif" color="#ffffff"><a name="Properties of Administered Objects"><strong>Properties of Administered Objects</strong></a></font></td></tr><tr><td><blockquote> |
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| 162 | |
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| 163 | <p>Functional requirements for administrative applications are specified |
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| 164 | in terms of <em>Administered Objects</em>, whose definitions and detailed |
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| 165 | properties are listed <a href="fs-admin-objects.html">here</a>. In general, |
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| 166 | Administered Objects correspond to components in the Catalina architecture, |
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| 167 | but these objects are defined separately here for the following reasons:</p> |
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| 168 | <ul> |
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| 169 | <li>It is possible that the administrative applications do not expose |
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| 170 | every possible configurable facet of the underlying components.</li> |
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| 171 | <li>In some cases, an Administered Object (from the perspective of an |
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| 172 | administrative operation) is realized by more than one Catalina |
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| 173 | component, at a finer-grained level of detail.</li> |
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| 174 | <li>It is necessary to represent the configuration information for a |
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| 175 | component separately from the component itself (for instance, in |
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| 176 | order to store that configuration information for later use).</li> |
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| 177 | <li>It is necessary to represent configuration information (such as |
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| 178 | a Default Context) when there is no corresponding component instance. |
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| 179 | </li> |
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| 180 | <li>Administered Objects, when realized as Java classes, will include |
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| 181 | methods for administrative operations that have no correspondence |
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| 182 | to operations performed by the corresponding actual components.</li> |
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| 183 | </ul> |
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| 184 | |
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| 185 | <p>It is assumed that the reader is familiar with the overall component |
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| 186 | architecture of Catalina. For further information, see the corresponding |
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| 187 | Developer Documentation. To distinguish names that are used as both |
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| 188 | <em>Administered Objects</em> and <code>Components</code>, different |
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| 189 | font presentations are utilized. Default values for many properties |
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| 190 | are listed in [square brackets].</p> |
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| 191 | |
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| 192 | </blockquote></td></tr></table> |
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| 193 | |
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| 194 | |
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| 195 | <table cellpadding="2" cellspacing="0" border="0"><tr><td bgcolor="#828DA6"><font face="arial,helvetica.sanserif" color="#ffffff"><a name="Supported Administrative Operations"><strong>Supported Administrative Operations</strong></a></font></td></tr><tr><td><blockquote> |
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| 196 | |
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| 197 | <p>The administrative operations that are available are described in terms |
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| 198 | of the corresponding Administered Objects (as defined above), in a manner |
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| 199 | that is independent of the access method by which these operations are |
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| 200 | requested. In general, such operations are relevant only in the context |
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| 201 | of a particular Administered Object (and will most likely be realized as |
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| 202 | method calls on the corresponding Administered Object classes), so they |
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| 203 | are organized based on the currently "focused" administered object. |
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| 204 | The available Supported Operations are documented |
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| 205 | <a href="fs-admin-opers.html">here</a>.</p> |
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| 206 | |
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| 207 | </blockquote></td></tr></table> |
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| 208 | |
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| 209 | |
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| 210 | <table cellpadding="2" cellspacing="0" border="0"><tr><td bgcolor="#828DA6"><font face="arial,helvetica.sanserif" color="#ffffff"><a name="Access Method Specific Requirements"><strong>Access Method Specific Requirements</strong></a></font></td></tr><tr><td><blockquote> |
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| 211 | |
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| 212 | <h5>Scriptable Web Application</h5> |
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| 213 | |
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| 214 | <p>An appropriate subset of the administrative operations described above |
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| 215 | shall be implemented as commands that can be performed by the "Manager" |
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| 216 | web application. <strong>FIXME</strong> - Enumerate them.</p> |
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| 217 | |
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| 218 | <p>In addition, this web application shall conform to the following |
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| 219 | requirements:</p> |
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| 220 | <ul> |
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| 221 | <li>All request URIs shall be protected by a security constraint that |
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| 222 | requires security role <code>manager</code> for processing.</li> |
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| 223 | <li>The default user database shall <strong>not</strong> contain any |
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| 224 | user that has been assigned the role <code>manager</code>.</li> |
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| 225 | </ul> |
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| 226 | |
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| 227 | <h5>HTML-Based Web Application</h5> |
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| 228 | |
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| 229 | <p>The entire suite of administrative operations described above shall be |
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| 230 | made available through a web application designed for human interaction. |
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| 231 | In addition, this web application shall conform to the following |
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| 232 | requirements:</p> |
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| 233 | <ul> |
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| 234 | <li>Must be implemented using servlet, JSP, and MVC framework technologies |
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| 235 | described under "External Technologies", above.</li> |
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| 236 | <li>Prompts and error messages must be internationalizable to multiple |
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| 237 | languages.</li> |
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| 238 | <li>Rendered HTML must be compatible with Netscape Navigator (verson 4.7 |
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| 239 | or later) and Internet Explorer (version 5.0 or later).</li> |
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| 240 | </ul> |
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| 241 | |
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| 242 | </blockquote></td></tr></table> |
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| 243 | |
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| 244 | |
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| 245 | </blockquote></td></tr></table><table cellpadding="2" cellspacing="0" border="0"><tr><td bgcolor="#525D76"><font face="arial,helvetica.sanserif" color="#ffffff"><a name="Testable Assertions"><strong>Testable Assertions</strong></a></font></td></tr><tr><td><blockquote> |
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| 246 | |
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| 247 | <p><strong>FIXME</strong> - Complete this section.</p> |
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| 248 | |
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| 249 | </blockquote></td></tr></table></td></tr><!--FOOTER SEPARATOR--><tr><td colspan="2"><hr size="1" noshade></td></tr><!--PAGE FOOTER--><tr><td colspan="2"><div align="center"><font size="-1" color="#525D76"><em> |
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| 250 | Copyright © 1999-2008, Apache Software Foundation |
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| 251 | </em></font></div></td></tr></table></body></html> |
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