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|
---
layout: default
title: The Data Templating Language
---
<div class=hgroup>
<div class=hgroup-inline>
<div class=panel>
<table>
<tr>
<td><img id=big-logo src=img/isologo.svg></td>
<td class=side-text>
<p>
A data templating language<br>
for app and tool developers
</p>
<ul>
<li>Generate config data</li>
<li>Side-effect free</li>
<li>Organize, simplify, unify</li>
<li>Manage sprawling config</li>
</ul>
</td>
</tr>
</table>
</div>
<div class=panel>
<table class=venn>
<tr>
<td>
<p>
A simple extension of <a href="http://json.org/">JSON</a><br>
</p>
<ul>
<li>Open source (Apache 2.0)</li>
<li>Familiar syntax</li>
<li>Reformatter, linter</li>
<li>Editor & IDE integrations</li>
<li>Formally specified</li>
</ul>
</td>
<td class=venn-cell><img id=venn src=img/venn.svg></td>
</tr>
</table>
</div>
<div style="clear: both"></div>
</div>
</div>
<div class=hgroup>
<div class=hgroup-inline>
<div class=panel>
<p class=center>Eliminate duplication with object-orientation:</p>
</div>
<div style="clear: both"></div>
</div>
</div>
<div class="inverse hgroup">
<div class=hgroup-inline>
<div class="tab-window-input" id="example1-input">
<div class="tab-header">
</div>
<textarea id=example1-jsonnet autofocus>
// Edit me!
{
person1: {
name: "Alice",
welcome: "Hello " + self.name + "!",
},
person2: self.person1 { name: "Bob" },
}
</textarea>
</div>
<div class="bigarrow">➡</div>
<div class="tab-window-output" id="example1-output">
<div class="tab-header">
<div class=selected onclick="tab_output_click(this, 'example1-json-output')">
output.json
</div>
</div>
<textarea readonly class="selected code-json" id="example1-json-output">
{
"person1": {
"name": "Alice",
"welcome": "Hello Alice!"
},
"person2": {
"name": "Bob",
"welcome": "Hello Bob!"
}
}
</textarea>
</div>
<script>
demo(
'example1-input',
{
'example1-jsonnet': 'example1.jsonnet',
},
'example1.jsonnet',
'example1-output',
false,
false
);
</script>
<div style="clear: both"></div>
</div>
</div>
<div class=hgroup>
<div class=hgroup-inline>
<div class=panel>
<p class=center>Or, use functions:</p>
</div>
<div style="clear: both"></div>
</div>
</div>
<div class="inverse hgroup">
<div class=hgroup-inline>
<div class="tab-window-input" id="example2-input">
<div class="tab-header">
</div>
<textarea id=example2-jsonnet autofocus>
// A function that returns an object.
local Person(name='Alice') = {
name: name,
welcome: 'Hello ' + name + '!',
};
{
person1: Person(),
person2: Person('Bob'),
}
</textarea>
</div>
<div class="bigarrow">➡</div>
<div class="tab-window-output" id="example2-output">
<div class="tab-header">
<div class=selected onclick="tab_output_click(this, 'example2-json-output')">
output.json
</div>
</div>
<textarea readonly class="selected code-json" id="example2-json-output">
{
"person1": {
"name": "Alice",
"welcome": "Hello Alice!"
},
"person2": {
"name": "Bob",
"welcome": "Hello Bob!"
}
}
</textarea>
</div>
<script>
demo(
'example2-input',
{
'example2-jsonnet': 'example2.jsonnet',
},
'example2.jsonnet',
'example2-output',
false,
false
);
</script>
<div style="clear: both"></div>
</div>
</div>
<div class=hgroup>
<div class=hgroup-inline>
<div class=panel>
<p class=center>
Integrate with existing / custom applications.<br>
Generate JSON, YAML, INI, and other formats.
</p>
</div>
<div style="clear: both"></div>
</div>
</div>
<div class="inverse hgroup">
<div class=hgroup-inline>
<div class="tab-window-input" id="example3-input">
<div class="tab-header">
</div>
<textarea id=example3-jsonnet>
local application = 'my-app';
local module = 'uwsgi_module';
local dir = '/var/www';
local permission = 644;
{
'uwsgi.ini': std.manifestIni({
sections: {
uwsgi: {
module: module,
pythonpath: dir,
socket: dir + '/uwsgi.sock',
'chmod-socket': permission,
callable: application,
logto: '/var/log/uwsgi/uwsgi.log',
},
},
}),
'init.sh': |||
#!/bin/bash
mkdir -p %(dir)s
touch %(dir)s/initialized
chmod %(perm)d %(dir)s/initialized
||| % {dir: dir, perm: permission},
'cassandra.conf': std.manifestYamlDoc({
cluster_name: application,
seed_provider: [
{
class_name: 'SimpleSeedProvider',
parameters: [{ seeds: '127.0.0.1' }],
},
],
}),
}
</textarea>
</div>
<div class="bigarrow">➡</div>
<div class="tab-window-output" id="example3-output">
<div class="tab-header">
<div class=selected onclick="tab_output_click(this, 'example3-yaml-output')">
cassandra.conf
</div>
<div class=unselected onclick="tab_output_click(this, 'example3-sh-output')">
init.sh
</div>
<div class=unselected onclick="tab_output_click(this, 'example3-ini-output')">
uwsgi.ini
</div>
</div>
<textarea readonly class="selected code-json" id="example3-yaml-output">
"cluster_name": "my-app"
"seed_provider":
- "class_name": "SimpleSeedProvider"
"parameters":
- "seeds": "127.0.0.1"
</textarea>
<textarea readonly class="unselected code-json" id="example3-sh-output">
#!/bin/bash
mkdir -p /var/www
touch /var/www/initialized
chmod 644 /var/www/initialized
</textarea>
<textarea readonly class="unselected code-json" id="example3-ini-output">
[uwsgi]
callable = my-app
chmod-socket = 644
logto = /var/log/uwsgi/uwsgi.log
module = uwsgi_module
pythonpath = /var/www
socket = /var/www/uwsgi.sock
</textarea>
</div>
<script>
demo(
'example3-input',
{
'example3-jsonnet': 'example3.jsonnet',
},
'example3.jsonnet',
'example3-output',
true,
true
);
</script>
<div style="clear: both"></div>
</div>
</div>
<div class=hgroup>
<div class=hgroup-inline>
<div class=panel>
<p class=padded>
The name Jsonnet is a portmanteau of JSON and <a
href="http://en.wikipedia.org/wiki/Sonnet"><i>sonnet</i></a>, pronounced "jay sonnet". It
began life early 2014 as a 20% project and was launched on Aug 6. The design is influenced
by several configuration languages internal to Google, and embodies years of experience
configuring some of the world's most complex IT systems. Jsonnet is now used by many
companies and projects. Jsonnet is not an official Google product (experimental or
otherwise), it is just code that happens to be owned by Google.
</p>
</div>
<div class=panel>
<p class=center>
<a href='https://bitnami.com'><img class=user-logo src=img/users/bitnami.png></a>
<!--
<a href='https://www.box.com'><img class=user-logo src=img/users/box.jpg></a>
<a href='https://coreos.com'><img class=user-logo src=img/users/coreos.svg></a>
<a href='https://databricks.com'><img class=user-logo src=img/users/databricks.png></a>
<a href='https://vr.google.com/daydream/'>
<img class=user-logo src=img/users/daydream-logo.png></a>
-->
<a href='https://deepmind.com'><img class=user-logo src=img/users/deepmind.png></a>
<!--
<a href='https://grafana.com'><img class=user-logo src=img/users/grafana.svg></a>
-->
<a href='https://www.heptio.com'><img class=user-logo src=img/users/heptio.jpg></a>
<a href='https://kausal.co'><img class=user-logo src=img/users/kausal.svg></a>
<!--
<a href='https://www.spinnaker.io'><img class=user-logo src=img/users/spinnaker.png></a>
-->
</p class=center>
</div>
<div style="clear: both"></div>
</div>
</div>
|
