[%# This Source Code Form is subject to the terms of the Mozilla Public
  # License, v. 2.0. If a copy of the MPL was not distributed with this
  # file, You can obtain one at http://mozilla.org/MPL/2.0/.
  #
  # This Source Code Form is "Incompatible With Secondary Licenses", as
  # defined by the Mozilla Public License, v. 2.0.
  #%]

[% SET title = "Bugzilla 5.0 Release Notes" %]
[% INCLUDE global/header.html.tmpl
  title = title
  bodyclasses = ['narrow_page']
%]

<h1>[% title FILTER html %]</h1>

<ul class="bz_toc">
  <li><a href="#introduction">Introduction</a></li>
  <li><a href="#point">Updates in this 5.0.x Release</a></li>
  <li><a href="#req">Minimum Requirements</a></li>
  <li><a href="#feat">New Features and Improvements</a></li>
  <li><a href="#issues">Outstanding Issues</a></li>
  <li><a href="#code_changes">Code Changes Which May Affect
    Customizations and Extensions</a></li>
  <li><a href="https://bugzilla.readthedocs.org/en/latest/installing/upgrading.html">
    Notes On Upgrading From a Previous Version</a></li>
  <li><a href="http://www.bugzilla.org/releases/">Release Notes for Previous Versions</a></li>
</ul>

<h2 id="introduction">Introduction</h2>

<p>Welcome to Bugzilla 5.0! It has been over a year and a half since we released
  Bugzilla 4.4 in May of 2013. This new major release comes with many new features
  and improvements to WebServices and performance.</p>

<p>If you're upgrading, make sure to read
  <a href="https://bugzilla.readthedocs.org/en/latest/installing/upgrading.html">
  Notes On Upgrading From a Previous Version</a>. If you are upgrading from a
  release before 4.4, make sure to read the release notes for all the
  <a href="http://www.bugzilla.org/releases/">previous versions</a> in between
  your version and this one, <strong>particularly the Upgrading section of each
  version's release notes</strong>.</p>

<h2 id="req">Minimum Requirements</h2>

<p>Any requirements that are new since 4.4 will look like
  <span class="req_new">this</span>.</p>

<ul>
  <li><a href="#req_perl">Perl</a></li>
  <li><a href="#req_mysql">For MySQL Users</a></li>
  <li><a href="#req_pg">For PostgreSQL Users</a></li>
  <li><a href="#req_oracle">For Oracle Users</a></li>
  <li><a href="#req_sqlite">For SQLite Users</a></li>
  <li><a href="#req_modules">Required Perl Modules</a></li>
  <li><a href="#req_optional_mod">Optional Perl Modules</a></li>
  <li><a href="#req_apache">Optional Apache Modules</a></li>
</ul>

<h3 id="req_perl">Perl</h3>

<p>Perl <span class="req_new">v5.10.1</span></p>

[% INCLUDE db_req db='mysql' %]

[% INCLUDE db_req db='pg' %]

[% INCLUDE db_req db='oracle' %]

[% INCLUDE db_req db='sqlite' %]

<h3 id="req_modules">Required Perl Modules</h3>

[% INCLUDE req_table reqs = REQUIRED_MODULES
                     new = ['File-Slurp','JSON-XS', 'Email-Sender']
                     updated = ['DateTime', 'DateTime-TimeZone',
                                'Template-Toolkit', 'URI'] %]

<h3 id="req_optional_mod">Optional Perl Modules</h3>

<p>The following perl modules, if installed, enable various
  features of Bugzilla:</p>

[% INCLUDE req_table reqs = OPTIONAL_MODULES
                     new  = ['Cache-Memcached','File-Copy-Recursive']
                     updated = ['Chart', 'Test-Taint']
                     include_feature = 1 %]

<h3 id="req_apache">Optional Apache Modules</h3>

<p>If you are using Apache as your webserver, Bugzilla can
  take advantage of some Apache features if you have the below Apache
  modules installed and enabled.</p>

<ul>
  <li>mod_headers</li>
  <li>mod_expires</li>
  <li>mod_env</li>
</ul>

<p>On most systems (but not on Windows), <kbd>checksetup.pl</kbd> is able to
  tell whether or not you have these modules installed, and it will tell
  you.</p>


<h2 id="feat">New Features and Improvements</h2>

<ul>
  <li><a href="#feat_webservices">Improved WebServices</a></li>
  <li><a href="#feat_caching_performance">Improved Caching using Memcached</a></li>
  <li><a href="#feat_comment_tags">Abililty to Tag [% terms.Bug %] Comments</a></li>
  <li><a href="#feat_bug_groups">Improved [% terms.Bug %] Group Membership Checking</a></li>
  <li><a href="#feat_documentation">Improved Documentation for Users and Administrators</a></li>
  <li><a href="#feat_other">Other Enhancements and Changes</a></li>
</ul>

<h3 id="feat_webservices">Improved WebServices</h3>

<p>
  This release has major improvements in the WebServices interface. One big
  addition is a new REST-like endpoint alongside the existing XML-RPC and JSON-RPC
  endpoints. This will allow clients to access Bugzilla data using standard HTTP
  calls for easy development. <strong>Note:</strong> XML-RPC and JSON-RPC are
  deprecated in favor of REST and will likely be removed in the Bugzilla 7.0 release.
</p>
<p>
  Also API key support has been added so that API calls will no longer need to use
  cookies or a user's login and password. Users can create a different API key for
  each application and revoke API keys that have been compromised or are no longer
  needed. The API key will simply be passed to each call as credentials.
</p>
<p>
  Several methods have been added and existing ones improved to allow returning
  data that was not available before such as <kbd>Group.get</kbd>. <kbd>B[%%]ug.search</kbd>
  is now as full featured as the Advanced Query UI allowing for the same searches
  to be executed. Attachment data such as flags and other metadata can now be
  updated through the API. Other WebService changes are detailed
  <a href="#feat_webservices_other">below</a>.
</p>

<h3 id="feat_caching_performance">Improved Caching using Memcached</h3>

<p>
  Bugzilla now has the ability to connect to a Memcached server running either
  locally or on the network to allow fast access to different types of data.
  This cuts down on the amount of database hits and can improve performance. Other
  areas have been improved as well to take advantage of caching in memory for
  objects that are retrieved multiple times during a request such as user data, etc.
</p>

<h3 id="feat_comment_tags">Ability to Tag [% terms.Bug %] Comments</h3>

<p>
  Users can add tags, visible to other users, to [% terms.bug %] comments. This
  gives the users the ability to thread conversations, mark comments as spam,
  identify important comments, etc. Users can hide comments that contain specific
  tags if desired. The tag input field also supports autocompletion so commonly
  used tags can be selected. Administrators can make specifically tagged comments
  be automatically hidden from view.
</p>

<h3 id="feat_bug_groups">Improved [% terms.Bug %] Group Membership Checking</h3>

<p>
  In the past, Bugzilla restricted who can view [% terms.abug %] to everyone
  who was a member of ALL the groups the [% terms.bug %] was in. That is, the
  groups were ANDed together. This made some access control scenarios rather
  difficult to achieve. So now, Bugzilla defaults to (and can be switched to,
  in existing installations) a mode where the [% terms.bug %] can be viewed by
  everyone who is a member of ANY group the [% terms.bug %] is in. That is, the
  groups are ORed together. This give more flexibility in the way [% terms.bugs %]
  are made private to specific groups of users.
</p>
<p>
  <strong>Note:</strong> Group memberships for [% terms.bugs %] and users are
  not changed at all when this setting is switched. When switching from AND to
  OR, this means that [% terms.bugs %] may be more widely viewable than previously.
  It is the responsibility of the administrator to make sure that no [% terms.bugs %]
  are accidentally revealed to the wrong people when changing this setting.
</p>

<h3 id="feat_documentation">Improved Documentation for Users and Administrators</h3>

<p>
  The standard documentation that is shipped along with the Bugzilla code has been
  rewritten and improved using the reStructuredText format. This allows the
  documentation to be easily hosted at sites such as ReadTheDocs.org and can
  also be more easily converted into different formats such as HTML and PDF.
  A new section dedicated to the new REST WebService API has also been added,
  significantly improving on the old WebService documentation.
</p>

<h3 id="feat_other">Other Enhancements and Changes</h3>

<h4>Enhancements for Users</h4>

<ul>
  <li><strong>[% terms.Bugs %]:</strong> The deadline field is now visible to users
    not in the the <kbd>timetracking</kbd> group.</li>
  <li><strong>[% terms.Bugs %]:</strong> There is now a "Preview" mode when
    creating a new comment that allows you to see how the comment will look
    before committing to the database.</li>
  <li><strong>[% terms.Bugs %]:</strong> The reporter is now allowed to enter
    keywords at time of [% terms.bug %] creation.</li>
  <li><strong>[% terms.Bugs %]:</strong> "See Also" now allows spaces as well as
    commas to delimit multiple values.</li>
  <li><strong>[% terms.Bugs %]:</strong> Auto linkification in comments of [% terms.bug %]
    IDs and comment IDs has been improved.</li>
  <li><strong>[% terms.Bugs %]:</strong> [% terms.Bugs %] can now have multiple
    aliases assigned to them. Before each [% terms.bug %] could only have a single
    value. Also, aliases are now visible in the browser's title bar.</li>
  <li><strong>[% terms.Bugs %]:</strong> Users can now change the flags of multiple
    [%+ terms.bugs %] at once using the mass-edit form.</li>
  <li><strong>Charts and Reports:</strong> UTF-8 characters are now correctly
    displayed in "New Charts" and graphical reports.</li>
  <li><strong>Email:</strong> You can now choose to not receive any mail at all
    about a particular [% terms.bug %], even if you continue to have a role on
    that [% terms.bug %] (e.g. reporter).</li>
  <li><strong>Email:</strong> When adding or removing [% terms.abug %] as a
    dependency, the summary of the [% terms.bug %] is included in the email
    notification.</li>
  <li><strong>Requests:</strong> <kbd>request.cgi</kbd> can now output results in
    CSV format.</li>
  <li><strong>Requests:</strong><kbd> X-Bugzilla-*</kbd> headers are now included
    in flag notification emails.</li>
  <li><strong>Searches:</strong> Some useful searches have been added to the
    Bugzilla home page.</li>
  <li><strong>Searches:</strong> Quicksearch now allows for use of comparison
    operators such as !=, >=, >, &lt;, etc., in addition to substring searches.</li>
  <li><strong>Searches:</strong> The "Blocks" and "Depends On" values can now be
    displayed as columns in [% terms.abug %] list.</li>
  <li><strong>Searches:</strong> The "is empty" and "is not empty" search operators
    have been added to the Advanced Search UI. This allows searching for null
    and not null values for certain fields.</li>
  <li><strong>Searches:</strong> Custom multi-select fields are now available as
    report axis options. This makes them usable for categorizing [% terms.bugs %]
    in reports.</li>
</ul>

<h4>Enhancements for Administrators and Developers</h4>

<ul>
  <li><strong>Administration:</strong> There are now <kbd>INTEGER</kbd> and
    <kbd>DATE</kbd> custom field types.</li>
  <li><strong>Administration:</strong> Filenames used to store product data for
    "Old Charts" are now based on product IDs to avoid data loss when changing
    product names.</li>
  <li><strong>Administration:</strong> JavaScript and CSS files are now minified
    and concatenated to improve page load performance. When changes are made,
    <kbd>checksetup.pl</kbd> should be run to regenerate the combined files.</li>
  <li><strong>[% terms.Bugs %]:</strong> Bugzilla now keeps track of the last
    time each user visited (that is, loaded the show_bug page in a web browser)
    each [% terms.bug %]. This could be useful for dashboards or API clients.</li>
  <li><strong>Database:</strong> Text that contained unicode
    supplementary characters (outside BMP) was cut off when using MySQL as backend.
    This has been fixed to prevent data loss.</li>
  <li><strong>Database:</strong> SSL connections are now possible when using
    MySQL as backend.</li>
  <li><strong>Database:</strong> For version 8.x of PostgreSQL, <kbd>plpgsql</kbd>
    was not always installed by default and <kbd>checksetup.pl</kbd> would
    generate an error. This has been fixed.</li>
  <li><strong>Development:</strong> Bugzilla is now HTML5 compliant.</li>
  <li><strong>Email:</strong> Email generation originally was done before the
    jobqueue job was inserted. This is now delayed and done by
    <kbd>jobqueue.pl</kbd> right before sending the email which can improve
    responsiveness when processing [% terms.bug %] changes.</li>
  <li><strong>Email:</strong> When a site administrator creates a new user, an
    email is sent to the user.</li>
  <li><strong>Email:</strong> For dependency email notifications, the header
    <kbd>X-B[%%]ugzilla-Type: dep_changed</kbd> is set.</li>
  <li><strong>Email:</strong> <kbd>whine.pl</kbd> emails now use
    <kbd>DEFAULT_COLUMN_LIST</kbd> (the same default columns seen in the buglist
    page) instead of hard coded column list.</li>
  <li><strong>Security:</strong> Support for increased values for
    <kbd>PASSWORD_SALT_LENGTH</kbd> without breaking compatibility with old
    hashes.</li>
</ul>

<h4 id="feat_webservices_other">WebService Changes</h4>

<ul>
  <li><kbd>B[%%]ug.search</kbd> now allows for full search functionality
    similar to what is possible using the Advanced Query UI.</li>
  <li>Basic support for eTag headers has been added to all WebServices
    to allow for better network performance.</li>
  <li>Administrators can now change a parameter that filters all email
    addresses returned in WebService calls similar to filtering that
    happens in the web UI.</li>
  <li>WebService calls now support use of API keys for authentication.
    Usernames and passwords remain supported.</li>
  <li>WebService calls that are used to create and update [% terms.bugs %]
    and attachments now support setting and updating of flags.</li>
  <li><kbd>B[%%]ug.update_attachment</kbd> can update an attachment's
    metadata as well as its flags.</li>
  <li>Invalid or expired authentication cookies and tokens now throw
    errors instead of being silently ignored.</li>
  <li>The <kbd>product</kbd> parameter for <kbd>B[%%]ug.possible_duplicates</kbd>
    has been renamed to <kbd>products</kbd>.</li>
  <li>Some compatibility fields included in returned data that were marked
    to be removed in this release are now gone.</li>
  <li><kbd>Group.get</kbd> has been added to get information about a group and
    its members.</li>
</ul>

<h2 id="code_changes">Code Changes Which May Affect Customizations and Extensions</h2>

<ul>
  <li>The <kbd>docs_urlbase</kbd> parameter has been removed. If documentation
    has not been compiled locally, the "Help" links and other documentation links
    will redirect to <a href="https://bugzilla.readthedocs.org">bugzilla.readthedocs.org</a>
    automatically.</li>
  <li>The <kbd>mostfreqthreshold</kbd> parameter has also been removed.</li>
  <li><kbd>JSON::XS</kbd> is now used instead of <kbd>Data::Dumper</kbd> for
    storage on configuration values in <kbd>data/params</kbd>. This should
    improve performance when loading the file.</li>
  <li>A new test has been added to check for reserved words in SQL schema.</li>
  <li><kbd>Pod::Coverage</kbd> is now used to ensure subroutines are documented.</li>
  <li>Bugzilla code now uses <kbd>use parent</kbd> instead of <kbd>use base</kbd>
    in all places applicable.</li>
  <li>A new hook called <kbd>cgi_headers</kbd> has been added to allow
    customization of the HTTP headers returned.</kbd>
</ul>

[% INCLUDE global/footer.html.tmpl %]

[% BLOCK db_req %]
  [% SET m = DB_MODULE.$db %]
  <h3 id="req_[% db FILTER html %]">For [% m.name FILTER html %] Users</h3>

  <ul>
    <li>[% m.name FILTER html %]
       [%+ '<span class="req_new">' IF db_new %]v[% m.db_version FILTER html %]
       [% '</span>' IF db_new %]
       </li>
    <li><strong>perl module:</strong>
      [%+ m.dbd.module FILTER html %]
      [%+ '<span class="req_new">' IF dbd_new %]v[% m.dbd.version FILTER html %]
      [% '</span>' IF dbd_new %]</li>
  </ul>
[% END %]


[% BLOCK req_table %]
  <table class="req_table">
    <tr>
      <th>Module</th> <th>Version</th>
      [% IF include_feature %]
        <th>Enables Feature</th>
      [% END %]
    </tr>
    [% FOREACH req = reqs %]
      <tr>
        <td [% ' class="req_new"' IF new.contains(req.package) %]>
          [%- req.module FILTER html %]</td>
        <td [% ' class="req_new"' IF updated.contains(req.package)
                                     OR new.contains(req.package) %]>
          [%- IF req.version == 0 %]
            (Any)
          [% ELSE %]
            [%- req.version FILTER html %]
          [% END %]
        </td>
        [% IF include_feature %]
          <td>[% req.feature.join(', ') FILTER html %]</td>
        [% END %]
      </tr>
    [% END %]
</table>
[% END %]
