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<!DOCTYPE html>
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<title>compile-db</title>
<meta name="Description" content="A helper script for compiling s6-rc databases." />
<meta name="Keywords" content="goetia s6-rc s6-rc-compile source directory" />
</head>
<header>
<p>
<a href="//0x53.net/software/goetia/goetia-base">goetia-base</a>
<br />
<a href="//0x53.net/software/goetia">goetia</a>
<br />
<a href="//0x53.net/software">Software</a>
<br />
<a href="//0x53.net">0x53.net</a>
</p>
</header>
<body>
<h1>The compile-db program</h1>
<p>
compile-db is a helper script for use by other software
that compiles a general <code><em>confdir</em></code>
tries to use the result to update a general
<code><em>livedir</em></code>.
</p>
<h2>Interface</h2>
<pre> compile-db <em>confdir</em> <em>livedir</em></pre>
<ul>
<li>
compile-db runs
<a href="https://skarnet.org/software/s6-rc/s6-rc-compile.html">s6-rc-compile</a>
on <code><em>confdir</em>/src/*</code>.
</li>
<li>
This creates a new <code><em>confdir</em>/<var>@xyz@</var>_db</code>
file with <code><var>@xyz@</var></code> based on the current UNIX time.
</li>
<li>
If <code><em>livedir</em></code> exists, that is,
a goetia based supervision tree is running,
compile-db the tries to update the live state at <code><em>livedir</em></code>
to <code><var>@xyz@</var>_db</code> using
<a href="https://skarnet.org/software/s6-rc/s6-rc-update.html">s6-rc-update</a>.
</li>
<li>
If it succeeds, it updates the symlink
<code><em>confdir</em>/compiled</code>
to point to
<code><em>confdir</em>/<var>@xyz@</var>_db</code>
and deletes the old database
<code><em>confdir</em>/<var>@abc@</var>_db</code>.
</li>
<li>
If it does <em>not</em> succeed,
it runs s6-rc-update to switch back to
<code><em>confdir</em>/compiled</code>
which points to
<code><em>confdir</em>/<var>@abc@</var>_db</code>.
Followed by deleting
<code><em>confdir</em>/<var>@xyz@</var>_db</code>.
</li>
</ul>
<h2>Exit codes</h2>
<ul>
<li>
0: success
</li>
<li>
Since compile-db is an
<a href="https://skarnet.org/software/execline/">execline</a>
script, it exits with an approximation
of employed program that failed.
</li>
<li>
compile-db mostly uses
<a href="https://skarnet.org/software/execline/">execline</a>
and
<a href="https://skarnet.org/software/s6/">s6</a>
software, the exit behaviour of which can be looked up on
their respective pages.
</li>
<li>
See also:
<a href="https://skarnet.org/software/execline/exitcodes.html">execline exit code handling</a>.
</li>
</ul>
<h2>Options</h2>
<ul>
<li>
There are no otions to compile-db.
</li>
</ul>
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