Jsonnet - The Data Templating Language
source link: https://jsonnet.org/
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The Data Templating Language
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A data templating language
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A simple extension of JSON
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Eliminate duplication with object-orientation:
// Edit me!
{ person1: {name: "Alice",
welcome: "Hello " + self.name + "!",
},
person2: self.person1 { name: "Bob" },}
Or, use functions:
// A function that returns an object.
local Person(name='Alice') = {name: name,
welcome: 'Hello ' + name + '!',
};
{person1: Person(),
person2: Person('Bob'),}
Integrate with existing / custom applications.
Generate JSON, YAML, INI, and other formats.
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': |||
#!/usr/bin/env 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' }],},
],
}),
}
The name Jsonnet is a portmanteau of JSON and sonnet, 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.
Except as noted, this content is licensed under Creative Commons Attribution 2.5.
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