module Chef::DSL::PlatformIntrospection
Chef::DSL::PlatformIntrospection
¶ ↑
Provides the DSL
for platform-dependent switch logic, such as value_for_platform
.
Public Instance Methods
Shamelessly stolen from github.com/sethvargo/chef-sugar/blob/master/lib/chef/sugar/docker.rb Given a node object, returns whether the node is a docker container.
Parameters¶ ↑
- node
Chef::Node
-
The node to check.
Returns¶ ↑
- true
-
if the current node is a docker container
- false
-
if the current node is not a docker container
# File lib/chef/dsl/platform_introspection.rb, line 255 def docker?(node = run_context.nil? ? nil : run_context.node) # Using "File.exist?('/.dockerinit') || File.exist?('/.dockerenv')" makes Travis sad, # and that makes us sad too. !!(node && node[:virtualization] && node[:virtualization][:systems] && node[:virtualization][:systems][:docker] && node[:virtualization][:systems][:docker] == "guest") end
a simple helper to determine if we're on a windows release pre-2012 / 8 @return [Boolean] Is the system older than Windows 8 / 2012
# File lib/chef/dsl/platform_introspection.rb, line 264 def older_than_win_2012_or_8?(node = run_context.nil? ? nil : run_context.node) node["platform_version"].to_f < 6.2 end
Given a list of platforms, returns true if the current recipe is being run on a node with that platform, false otherwise.
Parameters¶ ↑
- args
-
A list of platforms. Each platform can be in string or symbol format.
Returns¶ ↑
- true
-
If the current platform is in the list
- false
-
If the current platform is not in the list
# File lib/chef/dsl/platform_introspection.rb, line 157 def platform?(*args) has_platform = false args.flatten.each do |platform| has_platform = true if platform.to_s == node[:platform] end has_platform end
Given a list of platform families, returns true if the current recipe is being run on a node within that platform family, false otherwise.
Parameters¶ ↑
- args
-
A list of platform families. Each platform family can be in string or symbol format.
Returns¶ ↑
- true
-
if the current node platform family is in the list.
- false
-
if the current node platform family is not in the list.
# File lib/chef/dsl/platform_introspection.rb, line 240 def platform_family?(*args) args.flatten.any? do |platform_family| platform_family.to_s == node[:platform_family] end end
Given a hash similar to the one we use for Platforms, select a value from the hash. Supports per platform defaults, along with a single base default. Arrays may be passed as hash keys and will be expanded.
Parameters¶ ↑
- platform_hash
-
A platform-style hash.
Returns¶ ↑
- value
-
Whatever the most specific value of the hash is.
# File lib/chef/dsl/platform_introspection.rb, line 144 def value_for_platform(platform_hash) PlatformDependentValue.new(platform_hash).value_for_node(node) end
Given a hash mapping platform families to values, select a value from the hash. Supports a single base default if platform family is not in the map. Arrays may be passed as hash keys and will be expanded
Parameters¶ ↑
- platform_family_hash
-
A hash in the form { platform_family_name => value }
Returns¶ ↑
- value
-
Whatever the most specific value of the hash is.
# File lib/chef/dsl/platform_introspection.rb, line 227 def value_for_platform_family(platform_family_hash) PlatformFamilyDependentValue.new(platform_family_hash).value_for_node(node) end