Despite not requiring the configuration for any other reason, the taint
subcommand should not execute if the required_version constraints cannot
be met. Doing so can result in an undesirable state file upgrade.
Previous deprecations only included direct assignment of template-only
expressions to arguments. That is, this was not deprecated:
locals {
foo = ["${var.foo}"]
}
This commit uses hclsyntax.VisitAll to detect and show deprecations for
all template-only expressions, no matter how deep they are in a given
expression.
The providers schema command is using the Config.ProviderTypes method,
which had not been kept up to date with the changes to provider
requirements detection made in Config.ProviderRequirements. This
resulted in any currently-unused providers being omitted from the
output.
This commit changes the ProviderTypes method to use the same underlying
logic as ProviderRequirements, which ensures that `required_providers`
blocks are taken into account.
Includes an integration test case to verify that this fixes the provider
schemas command bug.
Now that we don't have to handle data sources that may or may not have
been updated during a refresh phase, and the plan phase can save the
data source to the refreshed state, we can remove a lot of the logic
involved in detecting whether the data source needs to be planned or
not.
When there is no separate refresh phase, we always must attempt to read
the data source during planning, and the only conditions are based on
having a known configuration, and not having any dependencies on which
we're waiting. If the data source is read during plan, we can now save
that directly to the refreshed state, and don't need to smuggle the
value as a change to be saved during apply.
This commit adds an `alltrue` function to Terraform configuration. A
reason we might want this function is because it will enable more
powerful custom variable validations. For example:
```hcl
variable "amis" {
type = list(object({
id = string
}))
validation {
condition = (alltrue([
for a in var.amis : length(a.id) > 4 && substr(a.id, 0, 4) == "ami-"
]))
error_message = "The ID of at least one AMI was invalid."
}
}
```
Now that the planning process generates a refreshed state, and can
handle changes between the configuration and the state which the refresh
process cannot, we can use the plan for the refresh command.
Treat any reference from a data source to a managed resource as a
dependency on the entire resource. While a resource's
attribute may be statically resolvable from the configuration, if the
user added a reference to that resource, it stands to reason that the
user intended there to be a dependency which we need to wait on.
This is an extension of an implicit behavior that existed previously in
Terraform, but was lost in the 0.13 release. That behavior was emergent
from the fact that the Refresh walk did not process the configuration
for managed resources, so any new resources in the config would be
evaluate as entirely unknown during Refresh, even if some attributes
were statically resolvable at that point.
This new implementation restores the old behavior, and extends it to
updates and replacements of the referenced resource.
This only changes the refreshed state stored in the plan file. Since the
change is stored in the plan, the applied result would be the same, but
we should still store the refreshed data in the plan file for tools that
consume the plan file.
This will also be needed in order to implement a new refresh command
based on the plan itself.
The prior state recorded in the plans did not match the actual prior
state. Make the plans and state match depending on whether there was
existing state or not.
Alisdair McDiarmid