This is a first pass of decoding of the main Terraform configuration file
format. It hasn't yet been tested with any real-world configurations, so
it will need to be revised further as we test it more thoroughly.
These types represent the individual elements within configuration, the
modules a configuration is made of, and the configuration (static module
tree) itself.
This method loads a "values file" -- also known as a "tfvars file" -- and
returns the values found inside.
A values file is an HCL file (in either native or JSON syntax) whose
top-level body is treated as a set of arbitrary key/value pairs whose
values may not depend on any variables or functions.
We will load values files through a configs.Parser -- even though values
files are not strictly-speaking part of configuration -- because this
causes them to be registered in our source code cache so that we can
generate source code snippets if we need to report any diagnostics.
configs.Parser is the entry-point for this package, providing functions to
load and parse HCL-based configuration files.
We use the library "afero" to decouple the parser from the physical OS
filesystem, which here allows us to easily use an in-memory filesystem
for testing and will, in future, allow us to read files from more unusual
places, such as configuration embedded in a plan file.
There's a lot of complexity in our existing "config" package that results
from our approach to handling configuration with HCL and HIL. A lot of
that functionality is no longer needed -- or must work in a significantly
different way -- for HCL2.
The new package "configs", which is named following the convention of some
Go standard library packages like "strings", is a re-imagination of some
of the functionality from the "config" package for an HCL2-only world.
The scope of this package will be slightly smaller than "config", since
it only deals with config loading and not with expression evaluation.
Another package "lang" (mentioned in the docstring here but not yet added)
will deal with the more dynamic portions of of configuration handling,
including populating an hcl.EvalContext to evaluate expressions.
Currently the provisioner will fail if the `hab` user already exists on
the target system.
This adds a check to see if we need to create the user before trying to
add it.
Fixes#17159
Signed-off-by: Nolan Davidson <ndavidson@chef.io>
This change allows the Habitat supervisor service name to be
configurable. Currently it is hard coded to `hab-supervisor`.
Signed-off-by: Nolan Davidson <ndavidson@chef.io>
Moves the nested select statements for backend operations into a single
function. The only difference in this part was that apply called
PersistState, which should be harmless regardless of the type of
operation being run.
The error was being silently dropped before.
There is an interpolation error, because the plan is canceled before
some of the resources can be evaluated. There might be a better way to
handle this in the walk cancellation, but the behavior has not changed.
Make the plan and apply shutdown match implementation-wise
If the user wishes to interrupt the running operation, only the first
interrupt was communicated to the operation by canceling the provided
context. A second interrupt would start the shutdown process, but not
communicate this to the running operation. This order of event could
cause partial writes of state.
What would happen is that once the command returns, the plugin system
would stop the provider processes. Once the provider processes dies, all
pending Eval operations would return return with an error, and quickly
cause the operation to complete. Since the backend code didn't know that
the process was shutting down imminently, it would continue by
attempting to write out the last known state. Under the right
conditions, the process would exit part way through the writing of the
state file.
Add Stop and Cancel CancelFuncs to the RunningOperation, to allow it to
easily differentiate between the two signals. The backend will then be
able to detect a shutdown and abort more gracefully.
In order to ensure that the backend is not in the process of writing the
state out, the command will always attempt to wait for the process to
complete after cancellation.
The plan shutdown test often fail on slow CI hosts, becase the plan
completes befor the main thread can cancel it. Since attempting to make
the MockProvider concurrent proved too invasive for now, just slow the
test down a bit to help ensure Stop gets called.
Similar to NodeApplyableOuptut, NodeDestroyableOutputs also need to stay
in the graph if any ancestor nodes
Use the same GraphNodeTargetDownstream method to keep them from being
pruned, since they are dependent on the output node and all its
descendants.
github.com/joyent/triton-go replaced a bunch of other dependencies quite
some time ago, but the replaced dependencies were never removed. This
commit removes them from the vendor manifest and the vendor/ directory.
The id attribute can be missing during the destroy operation.
While the new destroy-time ordering of outputs and locals should prevent
resources from having their id attributes set to an empty string,
there's no reason to error out if we have the canonical ID field
available.
This still interrogates the attributes map first to retain any previous
behavior, but in the future we should settle on a single ID location.
Martin Atkins