branchcache: skip entries that are topological heads in the on disk file
In the majority of cases, topological heads are also branch heads. We have
efficient way to get the topological heads and efficient way to retrieve
their branch information. So there is little value in putting them in the branch
cache file explicitly. On the contrary, writing them explicitly tend to create
very large cache file that are inefficient to read and update.
So the branch cache v3 format is no longer including them. This changeset focus
on the format aspect and have no focus on the performance aspect. We will cover
that later.
#require serve
Some tests for hgweb in an empty repository
$ hg init test
$ cd test
$ hg serve -n test -p $HGPORT -d --pid-file=hg.pid -A access.log -E errors.log
$ cat hg.pid >> $DAEMON_PIDS
$ (get-with-headers.py localhost:$HGPORT 'shortlog')
200 Script output follows
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US">
<head>
<link rel="icon" href="/static/hgicon.png" type="image/png" />
<meta name="robots" content="index, nofollow" />
<link rel="stylesheet" href="/static/style-paper.css" type="text/css" />
<script type="text/javascript" src="/static/mercurial.js"></script>
<title>test: log</title>
<link rel="alternate" type="application/atom+xml"
href="/atom-log" title="Atom feed for test" />
<link rel="alternate" type="application/rss+xml"
href="/rss-log" title="RSS feed for test" />
</head>
<body>
<div class="container">
<div class="menu">
<div class="logo">
<a href="https://mercurial-scm.org/">
<img src="/static/hglogo.png" alt="mercurial" /></a>
</div>
<ul>
<li class="active">log</li>
<li><a href="/graph/tip">graph</a></li>
<li><a href="/tags">tags</a></li>
<li><a href="/bookmarks">bookmarks</a></li>
<li><a href="/branches">branches</a></li>
</ul>
<ul>
<li><a href="/rev/tip">changeset</a></li>
<li><a href="/file/tip">browse</a></li>
</ul>
<ul>
</ul>
<ul>
<li><a href="/help">help</a></li>
</ul>
<div class="atom-logo">
<a href="/atom-log" title="subscribe to atom feed">
<img class="atom-logo" src="/static/feed-icon-14x14.png" alt="atom feed" />
</a>
</div>
</div>
<div class="main">
<h2 class="breadcrumb"><a href="/">Mercurial</a> </h2>
<h3>log</h3>
<form class="search" action="/log">
<p><input name="rev" id="search1" type="text" size="30" value="" /></p>
<div id="hint">Find changesets by keywords (author, files, the commit message), revision
number or hash, or <a href="/help/revsets">revset expression</a>.</div>
</form>
<div class="navigate">
<a href="/shortlog/tip?revcount=30">less</a>
<a href="/shortlog/tip?revcount=120">more</a>
| rev -1:
</div>
<table class="bigtable">
<thead>
<tr>
<th class="age">age</th>
<th class="author">author</th>
<th class="description">description</th>
</tr>
</thead>
<tbody class="stripes2">
</tbody>
</table>
<div class="navigate">
<a href="/shortlog/tip?revcount=30">less</a>
<a href="/shortlog/tip?revcount=120">more</a>
| rev -1:
</div>
<script type="text/javascript">
ajaxScrollInit(
'/shortlog/%next%',
'', <!-- NEXTHASH
function (htmlText) {
var m = htmlText.match(/'(\w+)', <!-- NEXTHASH/);
return m ? m[1] : null;
},
'.bigtable > tbody',
'<tr class="%class%">\
<td colspan="3" style="text-align: center;">%text%</td>\
</tr>'
);
</script>
</div>
</div>
</body>
</html>
$ echo babar
babar
$ (get-with-headers.py localhost:$HGPORT 'log')
200 Script output follows
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US">
<head>
<link rel="icon" href="/static/hgicon.png" type="image/png" />
<meta name="robots" content="index, nofollow" />
<link rel="stylesheet" href="/static/style-paper.css" type="text/css" />
<script type="text/javascript" src="/static/mercurial.js"></script>
<title>test: log</title>
<link rel="alternate" type="application/atom+xml"
href="/atom-log" title="Atom feed for test" />
<link rel="alternate" type="application/rss+xml"
href="/rss-log" title="RSS feed for test" />
</head>
<body>
<div class="container">
<div class="menu">
<div class="logo">
<a href="https://mercurial-scm.org/">
<img src="/static/hglogo.png" alt="mercurial" /></a>
</div>
<ul>
<li class="active">log</li>
<li><a href="/graph/tip">graph</a></li>
<li><a href="/tags">tags</a></li>
<li><a href="/bookmarks">bookmarks</a></li>
<li><a href="/branches">branches</a></li>
</ul>
<ul>
<li><a href="/rev/tip">changeset</a></li>
<li><a href="/file/tip">browse</a></li>
</ul>
<ul>
</ul>
<ul>
<li><a href="/help">help</a></li>
</ul>
<div class="atom-logo">
<a href="/atom-log" title="subscribe to atom feed">
<img class="atom-logo" src="/static/feed-icon-14x14.png" alt="atom feed" />
</a>
</div>
</div>
<div class="main">
<h2 class="breadcrumb"><a href="/">Mercurial</a> </h2>
<h3>log</h3>
<form class="search" action="/log">
<p><input name="rev" id="search1" type="text" size="30" value="" /></p>
<div id="hint">Find changesets by keywords (author, files, the commit message), revision
number or hash, or <a href="/help/revsets">revset expression</a>.</div>
</form>
<div class="navigate">
<a href="/shortlog/tip?revcount=5">less</a>
<a href="/shortlog/tip?revcount=20">more</a>
| rev -1:
</div>
<table class="bigtable">
<thead>
<tr>
<th class="age">age</th>
<th class="author">author</th>
<th class="description">description</th>
</tr>
</thead>
<tbody class="stripes2">
</tbody>
</table>
<div class="navigate">
<a href="/shortlog/tip?revcount=5">less</a>
<a href="/shortlog/tip?revcount=20">more</a>
| rev -1:
</div>
<script type="text/javascript">
ajaxScrollInit(
'/shortlog/%next%',
'', <!-- NEXTHASH
function (htmlText) {
var m = htmlText.match(/'(\w+)', <!-- NEXTHASH/);
return m ? m[1] : null;
},
'.bigtable > tbody',
'<tr class="%class%">\
<td colspan="3" style="text-align: center;">%text%</td>\
</tr>'
);
</script>
</div>
</div>
</body>
</html>
$ (get-with-headers.py localhost:$HGPORT 'graph')
200 Script output follows
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US">
<head>
<link rel="icon" href="/static/hgicon.png" type="image/png" />
<meta name="robots" content="index, nofollow" />
<link rel="stylesheet" href="/static/style-paper.css" type="text/css" />
<script type="text/javascript" src="/static/mercurial.js"></script>
<title>test: revision graph</title>
<link rel="alternate" type="application/atom+xml"
href="/atom-log" title="Atom feed for test: log" />
<link rel="alternate" type="application/rss+xml"
href="/rss-log" title="RSS feed for test: log" />
</head>
<body>
<div class="container">
<div class="menu">
<div class="logo">
<a href="https://mercurial-scm.org/">
<img src="/static/hglogo.png" alt="mercurial" /></a>
</div>
<ul>
<li><a href="/shortlog/tip">log</a></li>
<li class="active">graph</li>
<li><a href="/tags">tags</a></li>
<li><a href="/bookmarks">bookmarks</a></li>
<li><a href="/branches">branches</a></li>
</ul>
<ul>
<li><a href="/rev/tip">changeset</a></li>
<li><a href="/file/tip">browse</a></li>
</ul>
<ul>
</ul>
<ul>
<li><a href="/help">help</a></li>
</ul>
<div class="atom-logo">
<a href="/atom-log" title="subscribe to atom feed">
<img class="atom-logo" src="/static/feed-icon-14x14.png" alt="atom feed" />
</a>
</div>
</div>
<div class="main">
<h2 class="breadcrumb"><a href="/">Mercurial</a> </h2>
<h3>graph</h3>
<form class="search" action="/log">
<p><input name="rev" id="search1" type="text" size="30" value="" /></p>
<div id="hint">Find changesets by keywords (author, files, the commit message), revision
number or hash, or <a href="/help/revsets">revset expression</a>.</div>
</form>
<div class="navigate">
<a href="/graph/tip?revcount=30">less</a>
<a href="/graph/tip?revcount=120">more</a>
| rev -1:
</div>
<noscript><p>The revision graph only works with JavaScript-enabled browsers.</p></noscript>
<div id="wrapper">
<canvas id="graph"></canvas>
<ul id="graphnodes" class="stripes2"></ul>
</div>
<script type="text/javascript">
var data = [];
var graph = new Graph();
graph.scale(39);
graph.render(data);
</script>
<div class="navigate">
<a href="/graph/tip?revcount=30">less</a>
<a href="/graph/tip?revcount=120">more</a>
| rev -1:
</div>
<script type="text/javascript">
ajaxScrollInit(
'/graph/%next%?graphtop=0000000000000000000000000000000000000000',
'', <!-- NEXTHASH
function (htmlText) {
var m = htmlText.match(/'(\w+)', <!-- NEXTHASH/);
return m ? m[1] : null;
},
'#wrapper',
'<div class="%class%" style="text-align: center;">%text%</div>',
'graph'
);
</script>
</div>
</div>
</body>
</html>
$ (get-with-headers.py localhost:$HGPORT 'file')
200 Script output follows
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US">
<head>
<link rel="icon" href="/static/hgicon.png" type="image/png" />
<meta name="robots" content="index, nofollow" />
<link rel="stylesheet" href="/static/style-paper.css" type="text/css" />
<script type="text/javascript" src="/static/mercurial.js"></script>
<title>test: 000000000000 /</title>
</head>
<body>
<div class="container">
<div class="menu">
<div class="logo">
<a href="https://mercurial-scm.org/">
<img src="/static/hglogo.png" alt="mercurial" /></a>
</div>
<ul>
<li><a href="/shortlog/tip">log</a></li>
<li><a href="/graph/tip">graph</a></li>
<li><a href="/tags">tags</a></li>
<li><a href="/bookmarks">bookmarks</a></li>
<li><a href="/branches">branches</a></li>
</ul>
<ul>
<li><a href="/rev/tip">changeset</a></li>
<li class="active">browse</li>
</ul>
<ul>
</ul>
<ul>
<li><a href="/help">help</a></li>
</ul>
</div>
<div class="main">
<h2 class="breadcrumb"><a href="/">Mercurial</a> </h2>
<h3>
directory / @ -1:<a href="/rev/000000000000">000000000000</a>
<span class="tag">tip</span>
</h3>
<form class="search" action="/log">
<p><input name="rev" id="search1" type="text" size="30" value="" /></p>
<div id="hint">Find changesets by keywords (author, files, the commit message), revision
number or hash, or <a href="/help/revsets">revset expression</a>.</div>
</form>
<table class="bigtable">
<thead>
<tr>
<th class="name">name</th>
<th class="size">size</th>
<th class="permissions">permissions</th>
</tr>
</thead>
<tbody class="stripes2">
</tbody>
</table>
</div>
</div>
</body>
</html>
$ (get-with-headers.py localhost:$HGPORT 'atom-bookmarks')
200 Script output follows
<?xml version="1.0" encoding="ascii"?>
<feed xmlns="http://www.w3.org/2005/Atom">
<id>http://*:$HGPORT/</id> (glob)
<link rel="self" href="http://*:$HGPORT/atom-bookmarks"/> (glob)
<link rel="alternate" href="http://*:$HGPORT/bookmarks"/> (glob)
<title>test: bookmarks</title>
<summary>test bookmark history</summary>
<author><name>Mercurial SCM</name></author>
<updated>1970-01-01T00:00:00+00:00</updated>
</feed>
$ cd ..