Commit Graph

11 Commits

Author SHA1 Message Date
James Bardin 7c4d00c04c allow path and terraform in self-block eval
We can insert the terraform and path values into EvalSelfBlock, since
these are static and always known during evaluation.
2020-11-02 14:00:58 -05:00
James Bardin 600d4c3e1f eval Data needs to operate on whole modules
In order to be able to use module values, and handle operations like
possibly invalid module indexes in conditional statements, whole modules
must always be returned during evaluation.
2020-04-12 10:50:31 -04:00
James Bardin 1ee851f256
Merge pull request #22846 from hashicorp/jbardin/evaluate-resource
Always evaluate resources in their entirety
2019-10-08 07:57:15 -04:00
James Bardin bfce78064b lang/eval: more evalContext fixups
self references do not need to be added to `managedResource`, and in
fact that could cause issues later if self is allowed in contexts other
than managed resources.

Coalesce 2 cases in the Referenceable switch, be take the
ContainingResource address of an instance beforehand.
2019-10-07 18:13:20 -04:00
Martin Atkins 39e609d5fd vendor: switch to HCL 2.0 in the HCL repository
Previously we were using the experimental HCL 2 repository, but now we'll
shift over to the v2 import path within the main HCL repository as part of
actually releasing HCL 2.0 as stable.

This is a mechanical search/replace to the new import paths. It also
switches to the v2.0.0 release of HCL, which includes some new code that
Terraform didn't previously have but should not change any behavior that
matters for Terraform's purposes.

For the moment the experimental HCL2 repository is still an indirect
dependency via terraform-config-inspect, so it remains in our go.sum and
vendor directories for the moment. Because terraform-config-inspect uses
a much smaller subset of the HCL2 functionality, this does still manage
to prune the vendor directory a little. A subsequent release of
terraform-config-inspect should allow us to completely remove that old
repository in a future commit.
2019-10-02 15:10:21 -07:00
James Bardin c49f976308 change lang eval to also only lookup resources
Continue only evaluating resource at a whole and push the indexing of
the resource down into the expression evaluation.

The exception here is that `self` must be an instance which must be
extracted from the resource. We now also add the entire resource to the
context, which was previously only partially populated with the self
referenced instance.
2019-09-19 11:46:09 -04:00
Pam Selle 7d905f6777 Resource for_each 2019-07-22 10:51:16 -04:00
Martin Atkins 4d52999538 lang: EvalBlock should use ReferencesInBlock
Previously it was calling directly to hcldec.Variables, and thus missing
the special fixups we do inside ReferencesInBlock to deal with
Terraform-specific concerns such as our attribute-as-blocks preprocessing.
2019-04-03 15:57:17 -07:00
Martin Atkins 479c6b2466 move "configschema" from "config" to "configs"
The "config" package is no longer used and will be removed as part
of the 0.12 release cleanup. Since configschema is part of the
"new world" of configuration modelling, it makes more sense for
it to live as a subdirectory of the newer "configs" package.
2018-10-16 18:50:29 -07:00
Martin Atkins c937c06a03 terraform: ugly huge change to weave in new HCL2-oriented types
Due to how deeply the configuration types go into Terraform Core, there
isn't a great way to switch out to HCL2 gradually. As a consequence, this
huge commit gets us from the old state to a _compilable_ new state, but
does not yet attempt to fix any tests and has a number of known missing
parts and bugs. We will continue to iterate on this in forthcoming
commits, heading back towards passing tests and making Terraform
fully-functional again.

The three main goals here are:
- Use the configuration models from the "configs" package instead of the
  older models in the "config" package, which is now deprecated and
  preserved only to help us write our migration tool.
- Do expression inspection and evaluation using the functionality of the
  new "lang" package, instead of the Interpolator type and related
  functionality in the main "terraform" package.
- Represent addresses of various objects using types in the addrs package,
  rather than hand-constructed strings. This is not critical to support
  the above, but was a big help during the implementation of these other
  points since it made it much more explicit what kind of address is
  expected in each context.

Since our new packages are built to accommodate some future planned
features that are not yet implemented (e.g. the "for_each" argument on
resources, "count"/"for_each" on modules), and since there's still a fair
amount of functionality still using old-style APIs, there is a moderate
amount of shimming here to connect new assumptions with old, hopefully in
a way that makes it easier to find and eliminate these shims later.

I apologize in advance to the person who inevitably just found this huge
commit while spelunking through the commit history.
2018-10-16 18:46:46 -07:00
Martin Atkins a16ca2ec53 lang: new package for the runtime parts of the config language
Whereas package "configs" deals with the static structure of the
configuration language, this new package "lang" deals with the dynamic
aspects such as expression evaluation.

So far this mainly consists of populating a hcl.EvalContext that contains
the values necessary to evaluate a block or an expression. There is also
special handling here for dynamic block generation using the HCL
"dynblock" extension, which is exposed in the public interface (rather
than hiding it as an implementation detail of EvalBlock) so that the
caller can then extract proper source locations for any result values
using the expanded body.

This also includes the beginnings of a replacement for the function table
handling that currently lives in the old "config" package, but most of
the functions are not yet ported and so this will expand in subsequent
commits.
2018-10-16 18:44:26 -07:00