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
* Create a function for logic that assigns value to initReason var after changing backend configuration
Create func determineInitReason() for logic block that assigns value to initReason var after changing backend/cloud configuration block or migrating to a different type of backend configuration. Also clarify 'cloud' configuration block message to say 'Terraform Cloud configuration block has changed' instead of 'Terraform Cloud configuration has changed'.
Some of the wording here needed adjusting with the change that backends
largely reflect state snapshot storage (removing 'enhanced'
designation), and that a 'backend' is not necessarily always present.
This fixes an issue where a user could not disable initialization of the
'cloud' configuration block (As is possible with -backend=false), as
well as add some syntactic sugar around -backend by adding a mutually
exclusive -cloud alias.
Unchanged elements in nested attributes backed by sets were previously
misrendered as empty objects. This commit removes the additional
brackets and adds a count of unchanged elements.
The specialized Terraform Cloud migration process asks right up top
whether the user wants to migrate state, because there are various other
questions contingent on that answer.
Therefore we ought to just honor their earlier answer when we get to the
point of actually doing the state migration, rather than prompting again.
This is tricky because we're otherwise just reusing a codepath that's
common to both modes. Hopefully we can find a better way to do this in
a later commit, but for the moment our main motivation is minimizing risk
to the very next release.
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.
This just gives a little extra information to work with when trying to
understand why a test failed. It doesn't change what any of the tests are
actually trying to test.
This aims to encapsulate the somewhat-weird logic we currently use to
distinguish between the various "terraform init" situations involving
Terraform Cloud mode, in the hope of making codepaths that branch based
on this slightly easier to read.
This isn't yet used, but uses of it will follow in subsequent commits.
This pull request focuses on removing the prompt to rename the default
workspace when it is empty. Functionality already exists to not migrate
an empty workspace. This commit adds some clarifying language in the
comment where we do the evaluation to know whether to ask for a new name
or not. I also added an end to end test, which I should have added to
begin with.
Given: You have multiple explicit local workspaces, and the `default`
workspace is empty.
When: You migrate the workspaces to Terraform Cloud.
Then: Terraform should _not_ ask for a workspace to migrate the
`default` workspace to in Terraform Cloud.
All run variables remain encoded as strings in the API but will now be expressed as an HCL value to be evaluated correctly by the remote terraform. Previously, only strings were supported.
Examples:
string: `"quoted literal"` (strings must be quoted)
map: `{ foo = "bar" }`
list: `["foo", "bar"]`
bool: `true`
null: `null`
number: `0.0001`
This requires the API to anticipate that all run variables will be HCL values
Error diags from c.installModules() no longer cause getModules() to exit early.
Whether installModules completed successfully, errored, or was cancelled, we
try to update the manifest as best we can, preferring incomplete information
to none.
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.
Katy Moe