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Query functions for PuppetDB
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README.md

PuppetDB query functions

This module contains query functions for PuppetDB for use from Puppet. They require the json ruby gem and the puppetdb-terminus.

Only queries over HTTPS are supported atm.

Usage

pdbresourcequery

The first argument is the resource query. Second argument is optional but allows you to specify the item you want from the returned hash.

It automatically excludes deactivated hosts.

Returns an array of hashes or array of strings if second argument is provided.

Examples

# Return an array of hashes describing all files that are owned by root on active hosts.
$ret = pdbresourcequery(
  ['and',
    ['=','type','File'],
    ['=',['parameter','owner'],'root']])

# Return an array of host names having those resources
$ret = pdbresourcequery(
  ['and',
    ['=',['node','active'],true],
    ['=','type','File'],
    ['=',['parameter','owner'],'root']], 'certname')

pdbresourcequery_all

Works exactly like pdbresourcequery but also returns deactivated hosts.

pdbnodequery

The first argument is the node query. Second argument is optional but allows you to specify a resource query that the nodes returned also have to match.

It automatically excludes deactivated hosts.

Returns a array of strings with the certname of the nodes (fqdn by default).

Examples

# Return an array of active nodes with an uptime more than 30 days
$ret = pdbnodequery(['>',['fact','uptime_days'],30])

# Return an array of active nodes with an uptime more than 30 days and
# having the class 'apache'
$ret = pdbnodequery(
  ['>',['fact','uptime_days'],30],
  ['and',
    ['=','type','Class'],
    ['=','title','Apache']])

pdbnodequery_all

Works exactly like pdbnodequery but also returns deactivated hosts.

pdbfactquery

The first argument is the node to get facts for. It can be either a single node or an array of nodes. If it is an array the return value of the function will also be an array. Second argument is optional, if specified only return that specific fact.

Examples

# Get hash of facts for foo.example.com
pdbfactquery('foo.example.com')
# Get the uptime fact for foo.example.com
pdbfactquery('foo.example.com', 'uptime')
# Get the uptime fact for foo.example.com and bar.example.com
pdbfactquery(['foo.example.com', 'bar.example.com'], 'uptime')

pdbstatusquery

The first argument is the node to get the status for. Second argument is optional, if specified only return that specific bit of status, one of 'name', 'deactivated', 'catalog_timestamp' and 'facts_timestamp'.

Returns an array of hashes or a array of strings if second argument is supplied.

Examples

# Get status for foo.example.com
pdbstatusquery('foo.example.com')
# Get catalog_timestamp for foo.example.com
pdbstatusquery('foo.example.com', 'catalog_timestamp')

pdbquery

This is the generic query function that the others make use of, you probably don't have to use it and can use one of the specific functions below instead.

The first argument is the URL path that should be queried, for example 'nodes' or 'status/nodes/'. The second argument if supplied if the query parameter, if it is a string it is assumed to be JSON formatted and sent as is, anything else is converted to JSON and then sent.

Examples

# Get list of all active nodes
$ret = pdbquery('nodes', ['=', ['node', 'active'], true ])

# Query status of current node
$ret2 = pdbquery("status/nodes/${settings::certname}")

See http://docs.puppetlabs.com/puppetdb for more info and examples about the PuppetDB API.

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