alternate_search is a chef cookbook that provides an alternate search syntax (and several utility functions) that make using Chef search easier. By default, searches are restricted to the current environment, and make use of partial_search so that searches use a minimum of resources.
Uses the partial_search cookbook.
Depend on this cookbook in your cookbooks metadata.rb:
depends 'alternate_search'
The below functions can the be used in recipes and template resources.
All of the node search functions restrict searches to the current chef_environment. If you need to search across all environments, use :chef_environment => *.
search_to_string(:recipe => 'chef-client', :chef_environment => 'staging')
=> "recipe:chef-client AND chef_environment:staging"
Equivalent to partial_search, with :chef_environment set to node.chef_environment by default.
search_nodes(:recipe => 'chef-server')
Options for partial_search can be passed as a second parameter:
search_nodes({:recipe => 'chef-server'}, {:keys => {"fqdn" => ['fqdn']}})
Does a partial search, only fetching the FQDNs of matching nodes.
search_fqdns(:recipe => 'webserver')
=> ['one.example.com', 'two.example.com']
Returns the FQDN of the single matching node, raising an error if zero or multiple nodes match:
search_fqdn(:role => 'graphite')
=> 'graphite.example.com'
Searching from a recipe:
# A single FQDN, raising an error if no nodes or multiple nodes are found
chef_server_host = search_fqdn(:recipe => 'chef-server')
# A list of FQDNs matching nodes with the 'postgres' recipe
database_hosts = search_fqdns(:recipe => 'postgres')
# A list of nodes with the 'webserver' role
webservers = search_nodes(:role => 'webserver')
Searching from a template resource:
template "/tmp/test" do
variables({
:database_servers => search_fqdns(:role => 'my_database_role')
})
end
Copyright (c) 2014 DataSift opensource@datasift.com
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Written by Sam Clements at DataSift.
