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Author SHA1 Message Date
Steven Danna
6034ece853 Initial control isolation support
The goal of this change is to provide an isolated view of the available
profiles when the user calls the include_controls or require_controls
APIs.  Namely,

- A profile should only be able to reference profiles that are part of
  its transitive dependency tree. That is, if the dependency tree for a
  profile looks like the following:

  A
  |- B --> C
  |
  |- D --> E

  Then profile B should only be able to see profile C and fail if it
  tries to reference A, D, or E.

- The same profile should be include-able at different versions from
  different parts of the tree without conflict.  That is, if the
  dependency tree for a profile looks like the following:

  A
  |- B --> C@1.0
  |
  |- D --> C@2.0

  Then profile B should see the 1.0 version of C and profile D should
  see the 2.0 profile C with respect to the included controls.

To achieve these goals we:

- Ensure that we construct ProfileContext objects with respect to the
  correct dependencies in Inspec::DSL.

- Provide a method of accessing all transitively defined rules on a
  ProfileContext without pushing all of the rules onto the same global
  namespace.

This does not yet handle attributes or libraries.
2016-08-25 14:42:55 +02:00