Blame Manual/repository-html/repository_23.html

ee1f37
ee1f37
<html>
d1db00
d1db00
organization, and administration of CentOS Artwork Repository.
d1db00
d1db00
Copyright C 2009-2011 Alain Reguera Delgado
ee1f37
ee1f37
Permission is granted to copy, distribute and/or modify this document
ee1f37
under the terms of the GNU Free Documentation License, Version 1.2 or
ee1f37
any later version published by the Free Software Foundation; with no
ee1f37
Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A
ee1f37
copy of the license is included in the section entitled GNU Free
ee1f37
Documentation License.  
ee1f37
-->
52772c
ee1f37
ee1f37
Written by: Lionel Cons <Lionel.Cons@cern.ch> (original author)
ee1f37
            Karl Berry  <karl@freefriends.org>
ee1f37
            Olaf Bachmann <obachman@mathematik.uni-kl.de>
ee1f37
            and many others.
ee1f37
Maintained by: Many creative people <dev@texi2html.cvshome.org>
ee1f37
Send bugs and suggestions to <users@texi2html.cvshome.org>
ee1f37
ee1f37
-->
ee1f37
<head>
52772c
<title>CentOS Artwork Repository: 2.16 The trunk/Identity/Models/Tpl/Promo/Web Directory</title>
ee1f37
52772c
<meta name="description" content="CentOS Artwork Repository: 2.16 The trunk/Identity/Models/Tpl/Promo/Web Directory">
52772c
<meta name="keywords" content="CentOS Artwork Repository: 2.16 The trunk/Identity/Models/Tpl/Promo/Web Directory">
ee1f37
<meta name="resource-type" content="document">
ee1f37
<meta name="distribution" content="global">
ee1f37
<meta name="Generator" content="texi2html 1.76">
ee1f37
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
ee1f37
<style type="text/css">
ee1f37
ee1f37
@import "/home/centos/artwork/trunk/Identity/Models/Css/Texi2html/common.css";
ee1f37
ee1f37
a.summary-letter {text-decoration: none}
ee1f37
pre.display {font-family: serif}
ee1f37
pre.format {font-family: serif}
ee1f37
pre.menu-comment {font-family: serif}
ee1f37
pre.menu-preformatted {font-family: serif}
ee1f37
pre.smalldisplay {font-family: serif; font-size: smaller}
ee1f37
pre.smallexample {font-size: smaller}
ee1f37
pre.smallformat {font-family: serif; font-size: smaller}
ee1f37
pre.smalllisp {font-size: smaller}
ee1f37
span.sansserif {font-family:sans-serif; font-weight:normal;}
ee1f37
ul.toc {list-style: none}
ee1f37
-->
ee1f37
</style>
ee1f37
ee1f37
ee1f37
</head>
ee1f37
ee1f37
<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
ee1f37
ee1f37
52772c
[ < ]
52772c
[ > ]
ee1f37
   
52772c
[ << ]
52772c
[ Up ]
52772c
[ >> ]
ee1f37
   
ee1f37
   
ee1f37
   
ee1f37
   
56a476
[Top]
56a476
[Contents]
52772c
[Index]
56a476
[ ? ]
ee1f37
52772c
52772c
52772c

2.16 The <tt>`trunk/Identity/Models/Tpl/Promo/Web'</tt> Directory

ee1f37
ee1f37
52772c
52772c

2.16.1 Goals

ee1f37
52772c

Organize scalable vector graphics (svg) to help describe the CentOS

52772c
web environment.
06d106

ee1f37
52772c
52772c

2.16.2 The CentOS web environment

b9dbd3
52772c

Inside CentOS corporate identity, the CentOS web environment is

52772c
considered a promotion component. The CentOS web environment is formed
52772c
by a central web application --to cover base needs (e.g., per-major
52772c
release information like release notes, lifetime, downloads,
52772c
documentation, support, security advisories, bugs, etc.)-- and many
52772c
different free web applications --to cover specific needs (e.g.,
52772c
wiki, mailing lists, etc.)--. 
52772c

52772c

The CentOS web environment is addressed to solve the following issues:

52772c

52772c
    52772c
  • One unique name and one unique visual style to all web
  • 52772c
    applications used inside the web environment.
    b9dbd3
    52772c
  • One-step navigation to web applications inside the environment.
  • 671838
    52772c
  • High degree of customization to change the visual style of all
  • 52772c
    web applications with few changes (e.g, updating just two or three
    52772c
    images plus common style sheet [CSS] definitions).
    52772c
    52772c
    52772c

    The CentOS project is attached to a monolithic corporate visual

    52772c
    identity (see section The <tt>`trunk/Identity'</tt> Directory), where all visual manifestations
    52772c
    have one unique name and one unique visual style. This way, the CentOS
    52772c
    web environment has one unique name (the CentOS brand) and one unique
    52772c
    visual style (the CentOS default theme) for all its visual
    52772c
    manifestations, the web applications in this case.
    632e8b

    52772c

    Since a maintainance point of view, achiving the one unique visual

    52772c
    style inside CentOS web environment is not a simple task. The CentOS
    52772c
    web environment is built upon many different web applications which
    52772c
    have different visual styles and different internal ways to customize
    52772c
    their own visual styles. For example: MoinMoin, the web application
    52772c
    used to support the CentOS wiki (http://wiki.centos.org/) is
    52772c
    highly customizable but Mailman (in its 2.x.x serie), the web
    52772c
    application used to support the CentOS mailing list, doesn't
    52772c
    support(1) a customization system that separates
    52772c
    presentation from logic, similar to that used by MoinMoin.
    52772c

    52772c

    This visual style diversity complicates our goal of one unique visual

    52772c
    style for all web applications. So, if we want one unique visual style
    52772c
    for all web applications used, it is innevitable to modify the web
    52772c
    applications in order to implement the CentOS one unique visual style
    52772c
    customization in them. Direct modification of upstream applications is
    52772c
    not convenient because upstream applications come with their one
    52772c
    visual style and administrators take the risk of loosing all
    52772c
    customization changes the next time the application be updated (since
    52772c
    not all upstream web applications, used in CentOS web environment,
    52772c
    separate presentation from logic).
    52772c

    52772c

    To solve the "one unique visual style" issue, installation and

    52772c
    actualization of web applications --used inside CentOS web
    52772c
    environment-- need to be independent from upstream web applications
    52772c
    development line; in a way that CentOS web environment administrators
    52772c
    can install and update web applications freely without risk of loosing
    52772c
    the one unique visual style customization changes. 
    52772c

    52772c

    At the surface of this issue we can see the need of one specific yum

    52772c
    repository to store CentOS web environment customized web applications.
    52772c

    52772c
    52772c
    52772c

    2.16.2.1 Design model (without ads)

    52772c
    52772c
    52772c
    52772c

    2.16.2.2 Design model (with ads)

    52772c
    06d106
    52772c
    52772c

    2.16.2.3 HTML definitions

    aaf678
    52772c
    52772c
    52772c

    2.16.2.4 Controlling visual style

    52772c
    52772c

    Inside CentOS web environment, the visual style is controlled by the

    52772c
    following compenents:
    52772c

    52772c
    52772c
    Webenv header background
    52772c
    trunk/Identity/Themes/Motifs/$THEME/Backgrounds/Img/1024x250.png
    52772c
    52772c
    52772c
    CSS definitions
    52772c
    trunk/Identity/Themes/Models/Default/Promo/Web/CSS/stylesheet.css
    52772c
    52772c
    52772c
    52772c
    52772c
    52772c

    2.16.2.5 Producing visual style

    52772c
    52772c

    The visual style of CentOS web environment is defined in the following

    52772c
    files:
    52772c

    52772c
    trunk/Identity/Themes/Motifs/$THEME/Backgrounds/Xcf/1024x250.xcf
    52772c
    trunk/Identity/Themes/Motifs/$THEME/Backgrounds/Img/1024x250.png
    52772c
    trunk/Identity/Themes/Motifs/$THEME/Backgrounds/Img/1024x250-bg.png
    52772c
    trunk/Identity/Themes/Motifs/$THEME/Backgrounds/Tpl/1024x250.svg
    52772c
    52772c

    As graphic designer you use <tt>`1024x250.xcf'</tt> file to produce

    52772c
    <tt>`1024x250-bg.png'</tt> file. Later, inside <tt>`1024x250.svg'</tt> file,
    52772c
    you use the <tt>`1024x250-bg.png'</tt> file as background layer to draw
    52772c
    your vectorial design. When you consider you artwork ready, use the
    52772c
    centos-art.sh script, as described below, to produce the
    52772c
    visual style controller images of CentOS web environment.
    52772c

    52772c
    centos-art render --entry=trunk/Identity/Themes/Motifs/$THEME/Backgrounds --filter='1024x250'
    52772c
    52772c

    Once you have rendered required image files, changing the visual style

    52772c
    of CentOS web environment is a matter of replacing old image files
    52772c
    with new ones, inside webenv repository file system structure. The
    52772c
    visual style changes will take effect the next time customization line
    52772c
    of CentOS web applications be packaged, uploded, and installed from
    52772c
    [webenv] or [webenv-test] repositories.
    52772c

    52772c
    52772c
    52772c

    2.16.2.6 Navigation

    52772c
    52772c

    Inside CentOS web environment, the one-step navegation between web

    52772c
    applications is addressed using the web environment navigation bar.
    52772c
    The web environment navigation bar contains links to main applications
    52772c
    and is always visible no matter where you are inside the web
    52772c
    environment.
    52772c

    52772c
    52772c
    52772c

    2.16.2.7 Development and release cycle

    52772c
    52772c

    The CentOS web environment development and relase cycle is described

    52772c
    below: 
    52772c

    52772c
    52772c
    Download
    52772c
    52772c

    The first action is download the source code of web applications we

    52772c
    want to use inside CentOS web environment.
    52772c

    52772c
    Important

    Important

    The source location from which web application are

    52772c
    downloaded is very important. Use SRPMs from CentOS [base]
    52772c
    and [updates] repositories as first choise, and third party
    52772c
    repositories (e.g. RPMForge, EPEL, etc.) as last resource.
    52772c

    52772c
    52772c
    52772c
    Prepare
    52772c
    52772c

    Once web application source code has been downloaded, our duty is

    52772c
    organize its files inside <samp>`webenv'</samp> version controlled repository.
    52772c

    52772c

    When preparing the structure keep in mind that different web

    52772c
    applications have different visual styles, and also different ways to
    52772c
    implement it. A convenient way to organize the file system structure
    52772c
    would be create one development line for each web application we use
    52772c
    inside CentOS web environment. For example, consider the following
    52772c
    file system structure:
    52772c

    52772c
    https://projects.centos.org/svn/webenv/trunk/
    52772c
    |-- WebApp1/
    52772c
    |   |-- Sources/
    52772c
    |   |   `-- webapp1-0.0.1/
    52772c
    |   |-- Rpms/
    52772c
    |   |   `-- webapp1-0.0.1.rpm
    52772c
    |   |-- Srpms/
    52772c
    |   |   `-- webapp1-0.0.1.srpm
    52772c
    |   `-- Specs/
    52772c
    |       `-- webapp1-0.0.1.spec
    52772c
    |-- WebApp2/
    52772c
    `-- WebAppN/
    52772c
    52772c
    52772c
    Customize
    52772c
    52772c

    Once web applications have been organized inside the version

    52772c
    controlled repository file system, use subversion to create the CentOS
    52772c
    customization development line of web applications source code.  For
    52772c
    example, using the above file system structure, you can create the
    52772c
    customization development line of <tt>`webapp1-0.0.1/'</tt> with the
    52772c
    following command:
    52772c

    52772c
    svn cp trunk/WebApp1/Sources/webapp1-0.0.1 trunk/WebApp1/Sources/webapp1-0.0.1-webenv
    52772c
    52772c

    The command above creates the following structure:

    52772c

    52772c
    https://projects.centos.org/svn/webenv/trunk/
    52772c
    |-- WebApp1/
    52772c
    |   |-- Sources/
    52772c
    |   |   |-- webapp1-0.0.1/
    52772c
    |   |   `-- webapp1-0.0.1-webenv/
    52772c
    |   |-- Rpms/
    52772c
    |   |   `-- webapp1-0.0.1.rpm
    52772c
    |   |-- Srpms/
    52772c
    |   |   `-- webapp1-0.0.1.srpm
    52772c
    |   `-- Specs/
    52772c
    |       `-- webapp1-0.0.1.spec
    52772c
    |-- WebApp2/
    52772c
    `-- WebAppN/
    52772c
    52772c

    In the above structure, the <tt>`webapp1-0.0.1-webenv/'</tt> directory is

    52772c
    the place where you customize the visual style of
    52772c
    <tt>`webapp1-0.0.1/'</tt> web application. 
    52772c

    52772c
    Info

    Tip

    Use the diff command of Subversion between

    52772c
    CentOS customization and upstream development lines to know what you
    52772c
    are changing exactly.
    52772c

    52772c
    52772c
    52772c
    Build packages
    52772c
    52772c

    When web application has been customized, build the web application

    52772c
    RPM and SRPM using the source location with <samp>`-webenv'</samp> prefix. 
    52772c

    52772c
    https://projects.centos.org/svn/webenv/trunk/
    52772c
    |-- WebApp1/
    52772c
    |   |-- Sources/
    52772c
    |   |   |-- webapp1-0.0.1/
    52772c
    |   |   `-- webapp1-0.0.1-webenv/
    52772c
    |   |-- Rpms/
    52772c
    |   |   |-- webapp1-0.0.1.rpm
    52772c
    |   |   `-- webapp1-0.0.1-webenv.rpm
    52772c
    |   |-- Srpms/
    52772c
    |   |   |-- webapp1-0.0.1.srpm
    52772c
    |   |   `-- webapp1-0.0.1-webenv.srpm
    52772c
    |   `-- Specs/
    52772c
    |       |-- webapp1-0.0.1.spec
    52772c
    |       `-- webapp1-0.0.1-webenv.spec
    52772c
    |-- WebApp2/
    52772c
    `-- WebAppN/
    52772c
    52772c
    52772c
    Release for testing
    52772c
    52772c

    When the customized web application has been packaged, make packages

    52772c
    available for testing and quality assurance. This can be achives using
    52772c
    a [webenv-test] yum repository. 
    52772c

    52772c
    info

    Note

    The [webenv-test] repository is not shipped inside

    52772c
    CentOS distribution default yum configuraiton. In order to use
    52772c
    [webenv-test] repository you need to configure it first.
    52772c

    52772c
    52772c

    If some problem is found to install/update/use the customized version

    52772c
    of web application, the problem is notified somewhere (a bugtracker
    52772c
    maybe) and the customization face is repated in order to fix the
    52772c
    problem. To release the new package add a number after <samp>`-webenv'</samp>
    52772c
    prefix. For example, if some problem is found in
    52772c
    <tt>`webapp1-0.0.1-webenv.rpm'</tt>, when it be fixed the new package will
    52772c
    be named <tt>`webapp1-0.0.1-webenv-1.rpm'</tt>. If a problem is found in
    52772c
    <tt>`webapp1-0.0.1-webenv-1.rpm'</tt>, when it be fixed the new package
    52772c
    will be named <tt>`webapp1-0.0.1-webenv-2.rpm'</tt>, and so on.
    52772c

    52772c

    The "customization -- release for testing" process is repeated

    52772c
    until CentOS quality assurance team considers the package is ready for
    52772c
    production.
    52772c

    52772c
    52772c
    Release for production
    52772c
    52772c

    When customized web application packages are considered ready for

    52772c
    production they are moved from [webenv-test] to [webenv] repository.
    52772c
    This action is commited by CentOS quality assurance team.
    52772c

    52772c
    info

    Note

    The [webenv] repository is not shipped inside CentOS

    52772c
    distribution default yum configuraiton. In order to use [webenv]
    52772c
    repository you need to configure it first.
    52772c

    52772c
    52772c
    52772c
    52772c
    52772c
    52772c

    2.16.2.8 The [webenv-test] repository

    52772c
    52772c
    /etc/yum.repos.d/CentOS-Webenv-test.repo
    52772c
    52772c
    [webenv-test]
    52772c
    name=CentOS-$releasever - Webenv-test
    52772c
    mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=webenv-test
    52772c
    #baseurl=http://mirror.centos.org/centos/$releasever/webenv-test/$basearch/
    52772c
    gpgcheck=1
    52772c
    gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-$releasever
    52772c
    enabled=1
    52772c
    priority=10
    52772c
    52772c
    52772c
    52772c

    2.16.2.9 The [webenv] repository

    52772c
    52772c
    /etc/yum.repos.d/CentOS-Webenv.repo
    52772c
    52772c
    [webenv]
    52772c
    name=CentOS-$releasever - Webenv
    52772c
    mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=webenv
    52772c
    #baseurl=http://mirror.centos.org/centos/$releasever/webenv/$basearch/
    52772c
    gpgcheck=1
    52772c
    gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-$releasever
    52772c
    enabled=1
    52772c
    priority=10
    52772c
    52772c
    52772c
    52772c

    2.16.2.10 Priority configuration

    52772c
    52772c

    Both [webenv] and [webenv-test] repositories update packages inside

    52772c
    CentOS [base] and CentOS [updates] repositories.
    52772c

    52772c
    52772c
    52772c

    2.16.3 Usage

    52772c
    52772c
      52772c
    • ...
    • 52772c
      52772c
      52772c
      52772c
      52772c

      2.16.4 See also

      ee1f37
      06d106
      52772c
      2.13 The <tt>`trunk/Identity/Models/Img/Promo/Web'</tt> Directory  
      06d106
      06d106
      ee1f37
      ee1f37
      ee1f37
      52772c
      [ < ]
      52772c
      [ > ]
      ee1f37
         
      52772c
      [ << ]
      52772c
      [ Up ]
      52772c
      [ >> ]
      ee1f37
      ee1f37

      ee1f37
       <font size="-1">
      52772c
        This document was generated on March, 22 2011 using texi2html 1.76.
      ee1f37
       </font>
      ee1f37
       
      ee1f37
      ee1f37

      ee1f37
      </body>
      ee1f37
      </html>