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wireprotov2: define and implement "manifestdata" command...
wireprotov2: define and implement "manifestdata" command The added command can be used for obtaining manifest data. Given a manifest path and set of manifest nodes, data about manifests can be retrieved. Unlike changeset data, we wish to emit deltas to describe manifest revisions. So the command uses the relatively new API for building delta requests and emitting them. The code calls into deltaparent(), which I'm not very keen of. There's still work to be done in delta generation land so implementation details of storage (e.g. exactly one delta is stored/available) don't creep into higher levels. But we can worry about this later (there is already a TODO on imanifestorage tracking this). On the subject of parent deltas, the server assumes parent revisions exist on the receiving end. This is obviously wrong for shallow clone. I've added TODOs to add a mechanism to the command to allow clients to specify desired behavior. This shouldn't be too difficult to implement. Another big change is that the client must explicitly request manifest nodes to retrieve. This is a major departure from "getbundle," where the server derives relevant manifests as it iterates changesets and sends them automatically. As implemented, the client must transmit each requested node to the server. At 20 bytes per node, we're looking at 2 MB per 100,000 nodes. Plus wire encoding overhead. This isn't ideal for clients with limited upload bandwidth. I plan to address this in the future by allowing alternate mechanisms for defining the revisions to retrieve. One idea is to define a range of changeset revisions whose manifest revisions to retrieve (similar to how "changesetdata" works). We almost certainly want an API to look up an individual manifest by node. And that's where I've chosen to start with the implementation. Again, a theme of this early exchangev2 work is I want to start by building primitives for accessing raw repository data first and see how far we can get with those before we need more complexity. Differential Revision: https://phab.mercurial-scm.org/D4488
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#require serve
Test chains of near empty directories, terminating 3 different ways:
- a1: file at level 4 (deepest)
- b1: two dirs at level 3
- d1: file at level 2
Set up the repo
$ hg init test
$ cd test
$ mkdir -p a1/a2/a3/a4
$ mkdir -p b1/b2/b3/b4
$ mkdir -p b1/b2/b3/c4
$ mkdir -p d1/d2/d3/d4
$ echo foo > a1/a2/a3/a4/foo
$ echo foo > b1/b2/b3/b4/foo
$ echo foo > b1/b2/b3/c4/foo
$ echo foo > d1/d2/d3/d4/foo
$ echo foo > d1/d2/foo
$ hg ci -Ama
adding a1/a2/a3/a4/foo
adding b1/b2/b3/b4/foo
adding b1/b2/b3/c4/foo
adding d1/d2/d3/d4/foo
adding d1/d2/foo
$ hg serve -n test -p $HGPORT -d --pid-file=hg.pid -E errors.log
$ cat hg.pid >> $DAEMON_PIDS
manifest with descending (paper)
$ get-with-headers.py $LOCALIP:$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: c9f45f7a1659 /</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 / @ 0:<a href="/rev/c9f45f7a1659">c9f45f7a1659</a>
<span class="phase">draft</span> <span class="branchhead">default</span> <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">
<tr class="fileline">
<td class="name">
<a href="/file/tip/a1">
<img src="/static/coal-folder.png" alt="dir."/> a1/
</a>
<a href="/file/tip/a1/a2/a3/a4">
a2/a3/a4
</a>
</td>
<td class="size"></td>
<td class="permissions">drwxr-xr-x</td>
</tr>
<tr class="fileline">
<td class="name">
<a href="/file/tip/b1">
<img src="/static/coal-folder.png" alt="dir."/> b1/
</a>
<a href="/file/tip/b1/b2/b3">
b2/b3
</a>
</td>
<td class="size"></td>
<td class="permissions">drwxr-xr-x</td>
</tr>
<tr class="fileline">
<td class="name">
<a href="/file/tip/d1">
<img src="/static/coal-folder.png" alt="dir."/> d1/
</a>
<a href="/file/tip/d1/d2">
d2
</a>
</td>
<td class="size"></td>
<td class="permissions">drwxr-xr-x</td>
</tr>
</tbody>
</table>
</div>
</div>
</body>
</html>
manifest with descending (coal)
$ get-with-headers.py $LOCALIP:$HGPORT 'file?style=coal'
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" />
<link rel="stylesheet" href="/static/style-extra-coal.css" type="text/css" />
<script type="text/javascript" src="/static/mercurial.js"></script>
<title>test: c9f45f7a1659 /</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?style=coal">log</a></li>
<li><a href="/graph/tip?style=coal">graph</a></li>
<li><a href="/tags?style=coal">tags</a></li>
<li><a href="/bookmarks?style=coal">bookmarks</a></li>
<li><a href="/branches?style=coal">branches</a></li>
</ul>
<ul>
<li><a href="/rev/tip?style=coal">changeset</a></li>
<li class="active">browse</li>
</ul>
<ul>
</ul>
<ul>
<li><a href="/help?style=coal">help</a></li>
</ul>
</div>
<div class="main">
<h2 class="breadcrumb"><a href="/">Mercurial</a> </h2>
<h3>
directory / @ 0:<a href="/rev/c9f45f7a1659?style=coal">c9f45f7a1659</a>
<span class="phase">draft</span> <span class="branchhead">default</span> <span class="tag">tip</span>
</h3>
<form class="search" action="/log">
<input type="hidden" name="style" value="coal" />
<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">
<tr class="fileline">
<td class="name">
<a href="/file/tip/a1?style=coal">
<img src="/static/coal-folder.png" alt="dir."/> a1/
</a>
<a href="/file/tip/a1/a2/a3/a4?style=coal">
a2/a3/a4
</a>
</td>
<td class="size"></td>
<td class="permissions">drwxr-xr-x</td>
</tr>
<tr class="fileline">
<td class="name">
<a href="/file/tip/b1?style=coal">
<img src="/static/coal-folder.png" alt="dir."/> b1/
</a>
<a href="/file/tip/b1/b2/b3?style=coal">
b2/b3
</a>
</td>
<td class="size"></td>
<td class="permissions">drwxr-xr-x</td>
</tr>
<tr class="fileline">
<td class="name">
<a href="/file/tip/d1?style=coal">
<img src="/static/coal-folder.png" alt="dir."/> d1/
</a>
<a href="/file/tip/d1/d2?style=coal">
d2
</a>
</td>
<td class="size"></td>
<td class="permissions">drwxr-xr-x</td>
</tr>
</tbody>
</table>
</div>
</div>
</body>
</html>
manifest with descending (monoblue)
$ get-with-headers.py $LOCALIP:$HGPORT 'file?style=monoblue'
200 Script output follows
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<link rel="icon" href="/static/hgicon.png" type="image/png" />
<meta name="robots" content="index, nofollow"/>
<link rel="stylesheet" href="/static/style-monoblue.css" type="text/css" />
<script type="text/javascript" src="/static/mercurial.js"></script>
<title>test: files</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 id="container">
<div class="page-header">
<h1 class="breadcrumb"><a href="/">Mercurial</a> / files</h1>
<form action="/log">
<input type="hidden" name="style" value="monoblue" />
<dl class="search">
<dt><label>Search: </label></dt>
<dd><input type="text" name="rev" value="" /></dd>
</dl>
</form>
<ul class="page-nav">
<li><a href="/summary?style=monoblue">summary</a></li>
<li><a href="/shortlog?style=monoblue">shortlog</a></li>
<li><a href="/changelog?style=monoblue">changelog</a></li>
<li><a href="/graph/tip?style=monoblue">graph</a></li>
<li><a href="/tags?style=monoblue">tags</a></li>
<li><a href="/bookmarks?style=monoblue">bookmarks</a></li>
<li><a href="/branches?style=monoblue">branches</a></li>
<li class="current">files</li>
<li><a href="/help?style=monoblue">help</a></li>
</ul>
</div>
<ul class="submenu">
<li><a href="/rev/tip?style=monoblue">changeset</a></li>
</ul>
<h2 class="no-link no-border">files</h2>
<p class="files">/ <span class="logtags"><span class="phasetag" title="draft">draft</span> <span class="branchtag" title="default">default</span> <span class="tagtag" title="tip">tip</span> </span></p>
<table>
<tr class="parity1">
<td>drwxr-xr-x</td>
<td></td>
<td></td>
<td>
<a href="/file/tip/a1?style=monoblue">a1</a>
<a href="/file/tip/a1/a2/a3/a4?style=monoblue">a2/a3/a4</a>
</td>
<td><a href="/file/tip/a1?style=monoblue">files</a></td>
</tr>
<tr class="parity0">
<td>drwxr-xr-x</td>
<td></td>
<td></td>
<td>
<a href="/file/tip/b1?style=monoblue">b1</a>
<a href="/file/tip/b1/b2/b3?style=monoblue">b2/b3</a>
</td>
<td><a href="/file/tip/b1?style=monoblue">files</a></td>
</tr>
<tr class="parity1">
<td>drwxr-xr-x</td>
<td></td>
<td></td>
<td>
<a href="/file/tip/d1?style=monoblue">d1</a>
<a href="/file/tip/d1/d2?style=monoblue">d2</a>
</td>
<td><a href="/file/tip/d1?style=monoblue">files</a></td>
</tr>
</table>
<div class="page-footer">
<p>Mercurial Repository: test</p>
<ul class="rss-logo">
<li><a href="/rss-log">RSS</a></li>
<li><a href="/atom-log">Atom</a></li>
</ul>
</div>
<div id="powered-by">
<p><a href="https://mercurial-scm.org/" title="Mercurial"><img src="/static/hglogo.png" width=75 height=90 border=0 alt="mercurial" /></a></p>
</div>
</div>
</body>
</html>
manifest with descending (gitweb)
$ get-with-headers.py $LOCALIP:$HGPORT 'file?style=gitweb'
200 Script output follows
<?xml version="1.0" encoding="ascii"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" 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-gitweb.css" type="text/css" />
<script type="text/javascript" src="/static/mercurial.js"></script>
<title>test: files</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="page_header">
<a href="https://mercurial-scm.org/" title="Mercurial" style="float: right;">Mercurial</a>
<a href="/">Mercurial</a> / files
</div>
<div class="page_nav">
<div>
<a href="/summary?style=gitweb">summary</a> |
<a href="/shortlog?style=gitweb">shortlog</a> |
<a href="/log?style=gitweb">changelog</a> |
<a href="/graph?style=gitweb">graph</a> |
<a href="/tags?style=gitweb">tags</a> |
<a href="/bookmarks?style=gitweb">bookmarks</a> |
<a href="/branches?style=gitweb">branches</a> |
files |
<a href="/rev/tip?style=gitweb">changeset</a> |
<a href="/help?style=gitweb">help</a>
</div>
<div class="search">
<form id="searchform" action="/log">
<input type="hidden" name="style" value="gitweb" />
<input name="rev" type="text" value="" size="40" />
<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>
</div>
<div class="title">/ <span class="logtags"><span class="phasetag" title="draft">draft</span> <span class="branchtag" title="default">default</span> <span class="tagtag" title="tip">tip</span> </span></div>
<table cellspacing="0">
<tr class="parity1">
<td style="font-family:monospace">drwxr-xr-x</td>
<td style="font-family:monospace"></td>
<td style="font-family:monospace"></td>
<td>
<a href="/file/tip/a1?style=gitweb">a1</a>
<a href="/file/tip/a1/a2/a3/a4?style=gitweb">a2/a3/a4</a>
</td>
<td class="link">
<a href="/file/tip/a1?style=gitweb">files</a>
</td>
</tr>
<tr class="parity0">
<td style="font-family:monospace">drwxr-xr-x</td>
<td style="font-family:monospace"></td>
<td style="font-family:monospace"></td>
<td>
<a href="/file/tip/b1?style=gitweb">b1</a>
<a href="/file/tip/b1/b2/b3?style=gitweb">b2/b3</a>
</td>
<td class="link">
<a href="/file/tip/b1?style=gitweb">files</a>
</td>
</tr>
<tr class="parity1">
<td style="font-family:monospace">drwxr-xr-x</td>
<td style="font-family:monospace"></td>
<td style="font-family:monospace"></td>
<td>
<a href="/file/tip/d1?style=gitweb">d1</a>
<a href="/file/tip/d1/d2?style=gitweb">d2</a>
</td>
<td class="link">
<a href="/file/tip/d1?style=gitweb">files</a>
</td>
</tr>
</table>
<div class="page_footer">
<div class="page_footer_text">test</div>
<div class="rss_logo">
<a href="/rss-log">RSS</a>
<a href="/atom-log">Atom</a>
</div>
<br />
</div>
</body>
</html>
manifest with descending (spartan)
$ get-with-headers.py $LOCALIP:$HGPORT 'file?style=spartan'
200 Script output follows
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<link rel="icon" href="/static/hgicon.png" type="image/png">
<meta name="robots" content="index, nofollow" />
<link rel="stylesheet" href="/static/style.css" type="text/css" />
<script type="text/javascript" src="/static/mercurial.js"></script>
<title>test: files for changeset c9f45f7a1659</title>
</head>
<body>
<div class="buttons">
<a href="/log/tip?style=spartan">changelog</a>
<a href="/shortlog/tip?style=spartan">shortlog</a>
<a href="/graph/tip?style=spartan">graph</a>
<a href="/tags?style=spartan">tags</a>
<a href="/branches?style=spartan">branches</a>
<a href="/rev/tip?style=spartan">changeset</a>
<a href="/help?style=spartan">help</a>
</div>
<h2><a href="/">Mercurial</a> / files for changeset <a href="/rev/c9f45f7a1659">c9f45f7a1659</a>: /</h2>
<table cellpadding="0" cellspacing="0">
<tr class="parity1">
<td><tt>drwxr-xr-x</tt>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>
<a href="/file/tip/a1?style=spartan">a1/</a>
<a href="/file/tip/a1/a2/a3/a4?style=spartan">
a2/a3/a4
</a>
</td>
</tr>
<tr class="parity0">
<td><tt>drwxr-xr-x</tt>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>
<a href="/file/tip/b1?style=spartan">b1/</a>
<a href="/file/tip/b1/b2/b3?style=spartan">
b2/b3
</a>
</td>
</tr>
<tr class="parity1">
<td><tt>drwxr-xr-x</tt>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>
<a href="/file/tip/d1?style=spartan">d1/</a>
<a href="/file/tip/d1/d2?style=spartan">
d2
</a>
</td>
</tr>
</table>
<div class="logo">
<a href="https://mercurial-scm.org/">
<img src="/static/hglogo.png" width=75 height=90 border=0 alt="mercurial"></a>
</div>
</body>
</html>
$ cat errors.log
$ cd ..