Variable number of properties sent to Chef resource based off of recipe code - properties

Question

I want to pass a variable number of properties to a resource based off of the values that are available in the attributes.
Here is an idea of what I want to do. The if logic around the properties is what I am wanting but not sure if it is possible to do something like that...
rpms = [
{
"name": "name",
"version": "version",
"release": "release",
"arch": "arch"
},
{
"name": "name"
}
]
rpms.each do | package_info |
custom_package 'install' + package_info['name'] do
name package_info['name']
if defined?(package_info['version']) # Only pass that property if it is available
version package_info['version']
end
if defined?(package_info['release']) # Only pass that property if it is available
version package_info['release']
end
if defined?(package_info['arch']) # Only pass that property if it is available
version package_info['arch']
end
end
end
Is there anything like this available in Chef?

Answer 1

You can do it using Ruby's send method, which invokes the method identified by the first argument, passing it any other arguments specified.
rpms = [
{
"name": "name",
"version": "version",
"release": "release",
"arch": "arch"
},
{
"name": "name"
}
]
rpms.each do |package_info|
custom_package "install ${package_info['name']}" do
package_info.each do |key, value|
send(key, value)
end
end
end