Previously we would only ever add new lock entries or update existing
ones. However, it's possible that over time a module may _cease_ using
a particular provider, at which point we ought to remove it from the lock
file so that operations won't fail when seeing that the provider cache
directory is inconsistent with the lock file.
Now the provider installer (EnsureProviderVersions) will remove any lock
file entries that relate to providers not included in the given
requirements, which therefore makes the resulting lock file properly match
the set of packages the installer wrote into the cache.
This does potentially mean that someone could inadvertently defeat the
lock by removing a provider dependency, running "terraform init", then
undoing that removal, and finally running "terraform init" again. However,
that seems relatively unlikely compared to the likelihood of removing
a provider and keeping it removed, and in the event it _did_ happen the
changes to the lock entry for that provider would be visible in the diff
of the provider lock file as usual, and so could be noticed in code
review just as for any other change to dependencies.
We cannot programmatically migrate workspaces to Terraform Cloud without
prompts, so `-input=false` should not be allowed in those cases.
There are 4 scenarios where we need input from a user to complete
migrating workspaces to Terraform Cloud.
1.) Migrate from a single local workspace to Terraform Cloud
* Terraform config for a local backend. Implicit local (no backend
specified) is fine.
* `terraform init` and `terraform apply`
* Change the Terraform config to use the cloud block
* `terraform init -input=false`
* You should now see an error message
2.) Migrate from a remote backend with a prefix to Terraform Cloud with
tags
* Create a workspace in Terraform Cloud manually. The name should
include a prefix, like "app-one"
* Have the terraform config use `backend "remote"` with a prefix set to
"app-"
* `terraform init` and `terraform apply`
* Update the Terraform config to use a cloud block with `tags
= ["app"]`. There should not be a prefix defined in the config now.
* `terraform init -input=false`
* You should now see an error message
3.) Migrate from multiple local workspaces to a single Terraform Cloud
workspace
* Create one or many local workspaces
* `terraform init` and `terraform apply` in each
* Change the Terraform config to use the cloud block
* `terraform init -input=false`
* You should now see an error message
4.) Migrate to Terraform Cloud and ask for a workspace name
* Create several local workspaces
* `terraform init` and `terraform apply` in each
* Change the Terraform config to use the cloud block with tags
* `terraform init -input=false`
* You should now see an error message
There are a few command line options for "terraform init" which are only
relevant when working with traditional backends, with the Cloud
integration previously just mostly ignoring them, or sometimes misbehaving
slightly due to them creating an unreasonable situation.
Now we'll catch these and return explicit errors, in order to be clear
that these options are not needed nor supported in Cloud mode.
Earlier work to make "terraform init" interruptible made the getproviders
package context-aware in order to allow provider installation to be cancelled.
Here we make a similar change for module installation, which is now also
cancellable with SIGINT. This involves plumbing context through initwd and
getmodules. Functions which can make network requests now include a context
parameter whose cancellation cancels those requests.
Since the module installation code is shared, "terraform get" is now
also interruptible during module installation.
The -lock and -lock-timeout flags were removed prior to the release of
1.0 as they were thought to have no effect. This is not true in the case
of state migrations when changing backends. This commit restores these
flags, and adds test coverage for locking during backend state
migration.
Also update the help output describing other boolean flags, showing the
argument as the user would type it rather than the default behavior.
There is a race between the MockSource and ShutdownCh which sometimes
causes this test to fail. Add a HangingSource implementation of Source
which hangs until the context is cancelled, so that there is always time
for a user-initiated shutdown to trigger the cancellation code path
under test.
We must ensure that the terraform required_version is checked as early
as possible, so that new configuration constructs don't cause init to
fail without indicating the version is incompatible.
The loadConfig call before the earlyconfig parsing seems to be unneeded,
and we can delay that to de-tangle it from installing the modules which
may have their own constraints.
TODO: it seems that loadConfig should be able to handle returning the
version constraints in the same manner as loadSingleModule.
Remove answers from testInputResponse as they are given, and raise an
error during cleanup if any answers remain unused.
This enables tests to ensure that the expected mock answers are actually
used in a test; previously, an entire branch of code including an input
sequence could be omitted and the test(s) would not fail.
The only test that had unused answers in this map is one leftover from
legacy state migrations, a prompt that was removed in
7c93b2e5e6
This is part of a general effort to move all of Terraform's non-library
package surface under internal in order to reinforce that these are for
internal use within Terraform only.
If you were previously importing packages under this prefix into an
external codebase, you could pin to an earlier release tag as an interim
solution until you've make a plan to achieve the same functionality some
other way.
This is part of a general effort to move all of Terraform's non-library
package surface under internal in order to reinforce that these are for
internal use within Terraform only.
If you were previously importing packages under this prefix into an
external codebase, you could pin to an earlier release tag as an interim
solution until you've make a plan to achieve the same functionality some
other way.
This is part of a general effort to move all of Terraform's non-library
package surface under internal in order to reinforce that these are for
internal use within Terraform only.
If you were previously importing packages under this prefix into an
external codebase, you could pin to an earlier release tag as an interim
solution until you've make a plan to achieve the same functionality some
other way.
Martin Atkins