Commit Graph

231 Commits

Author SHA1 Message Date
Martin Atkins b38f3301d1 command/views: Remove baseState argument from plan-rendering views
In practice the current implementation isn't actually using this, and if
we need access to states in future we can access them in either the
plan.PriorState or plan.PrevRunState fields, depending on which stage we
want a state snapshot of.
2021-05-10 09:25:30 -07:00
Martin Atkins 7c6e78bcb0 plans: Track both the previous run and prior states in the plan
Until now we've not really cared much about the state snapshot produced
by the previous Terraform operation, except to use it as a jumping-off
point for our refresh step.

However, we'd like to be able to report to an end-user whenever Terraform
detects a change that occurred outside of Terraform, because that's often
helpful context for understanding why a plan contains changes that don't
seem to have corresponding changes in the configuration.

As part of reporting that we'll need to keep track of the state as it
was before we did any refreshing work, so we can then compare that against
the state after refreshing. To retain enough data to achieve that, the
existing Plan field State is now two fields: PrevRunState and PriorState.

This also includes a very shallow change in the core package to make it
populate something somewhat-reasonable into this field so that integration
tests can function reasonably. However, this shallow implementation isn't
really sufficient for real-world use of PrevRunState because we'll
actually need to update PrevRunState as part of planning in order to
incorporate the results of any provider-specific state upgrades to make
the PrevRunState objects compatible with the current provider schema, or
else our diffs won't be valid. This deeper awareness of PrevRunState in
Terraform Core will follow in a subsequent commit, prior to anything else
making use of Plan.PrevRunState.
2021-05-05 15:11:05 -07:00
Alisdair McDiarmid 95b86bf7ad
Merge pull request #28566 from hashicorp/alisdair/json-logs-operations-commands
cli: Add JSON logs for operations commands
2021-04-30 14:00:02 -04:00
Martin Atkins b37b1beddd core: Minimal initial implementation of -replace=... option
This only includes the internal mechanisms to make it work, and not any
of the necessary UI changes to "terraform plan" and "terraform apply" to
activate it yet.

The force-replace options are ultimately handled inside the
NodeAbstractResourceInstance.plan method, at the same place we handle the
similar situation of the provider indicating that replacement is needed,
and so the rest of the changes here are just to propagate the settings
through all of the layers in order to reach that point.
2021-04-30 10:30:56 -07:00
Alisdair McDiarmid f72730a02b cli: Add JSON logs for operations commands 2021-04-30 11:37:36 -04:00
Martin Atkins 89f986ded6 command+backend: generalized "plan mode"
So far we've only had "normal mode" and "destroy mode", where the latter
is activated either by "terraform plan -destroy" or "terraform destroy".

In preparation for introducing a third mode "refresh only" this
generalizes how we handle modes so we can potentially deal with an
arbitrary number of modes, although for now we only intend to have three.

Mostly this is just a different implementation of the same old behavior,
but there is one small user-visible difference here: the "terraform apply"
command now accepts a -destroy option, mirroring the option of the same
name on "terraform plan", which in turn makes "terraform destroy"
effectively a shorthand for "terraform apply -destroy".

This is intended to make us consistent that "terraform apply" without a
plan file argument accepts all of the same plan-customization options that
"terraform plan" does, which will in turn avoid us having to add a new
alias of "terraform plan" for each new plan mode we might add. The -help
output is changed in that vein here, although we'll wait for subsequent
commit to make a similar change to the website documentation just so we
can deal with the "refresh only mode" docs at the same time.
2021-04-27 08:23:54 -07:00
Martin Atkins c6a7d080d9 core: Generalize the idea of a "plan mode", vs just destroy flag
Previously there were only two planning modes: normal mode and destroy
mode. In that context it made sense for these to be distinguished only by
a boolean flag.

We're now getting ready to add our third mode, "refresh only". This
establishes the idea that planning can be done in one of a number of
mutually-exclusive "modes", which are related to but separate from the
various other options that serve as modifiers for the plan operation.

This commit only introduces the new plans.Mode type and replaces the
existing "destroy" flag with a variable of that type. This doesn't cause
any change in effective behavior because Terraform Core still supports
only NormalMode and DestroyMode, with NewContext rejecting an attempt to
create a RefreshMode context for now.

It is in retrospect a little odd that the "destroy" flag was part of
ContextOpts rather than just an argument to the Plan method, but
refactoring that would be too invasive a change for right now so we'll
leave this as a field of the context for now and save revisiting that for
another day.
2021-04-27 08:23:54 -07:00
Alisdair McDiarmid e4031eaccf command: Add a newline before confirming apply
This blank line delineating the plan and the query was accidentally
dropped as part of the views migration.
2021-04-14 09:30:49 -04:00
Alisdair McDiarmid 37fff9336a
Merge pull request #27929 from hashicorp/alisdair/command-views-cleanup
Some command views cleanup
2021-02-25 16:26:08 -05:00
Alisdair McDiarmid 7c0ec0107f backend: Replace ShowDiagnostics with view.Diagnostics 2021-02-25 11:26:05 -05:00
James Bardin 936f597ba1 check errors before using configSnap
configSnap may be nil if there are errors loading it from the plan file.
2021-02-25 09:54:02 -05:00
Alisdair McDiarmid 68558ccd54 backend/local: Replace CLI with view instance
This commit extracts the remaining UI logic from the local backend,
and removes access to the direct CLI output. This is replaced with an
instance of a `views.Operation` interface, which codifies the current
requirements for the local backend to interact with the user.

The exception to this at present is interactivity: approving a plan
still depends on the `UIIn` field for the backend. This is out of scope
for this commit and can be revisited separately, at which time the
`UIOut` field can also be removed.

Changes in support of this:

- Some instances of direct error output have been replaced with
  diagnostics, most notably in the emergency state backup handler. This
  requires reformatting the error messages to allow the diagnostic
  renderer to line-wrap them;
- The "in-automation" logic has moved out of the backend and into the
  view implementation;
- The plan, apply, refresh, and import commands instantiate a view and
  set it on the `backend.Operation` struct, as these are the only code
  paths which call the `local.Operation()` method that requires it;
- The show command requires the plan rendering code which is now in the
  views package, so there is a stub implementation of a `views.Show`
  interface there.

Other refactoring work in support of migrating these commands to the
common views code structure will come in follow-up PRs, at which point
we will be able to remove the UI instances from the unit tests for those
commands.
2021-02-18 12:08:08 -05:00
Kristin Laemmert f6505870cc
Mildwonkey/providers interface renaming (#27805)
* providers.Interface: huge renamification

This commit renames a handful of functions in the providers.Interface to
match changes made in protocol v6. The following commit implements this
change across the rest of the codebase; I put this in a separate commit
for ease of reviewing and will squash these together when merging.

One noteworthy detail: protocol v6 removes the config from the
ValidateProviderConfigResponse, since it's never been used. I chose to
leave that in place in the interface until we deprecate support for
protocol v5 entirely.

Note that none of these changes impact current providers using protocol
v5; the protocol is unchanged. Only the translation layer between the
proto and terraform have changed.
2021-02-18 10:13:43 -05:00
Alisdair McDiarmid 6375c6ce6b
Merge pull request #27787 from hashicorp/alisdair/command-views-state-locker
clistate: Update clistate.Locker for command views
2021-02-16 17:37:18 -05:00
Alisdair McDiarmid 1ae3d30383
Merge pull request #27760 from hashicorp/alisdair/command-views-ui-hook
cli: Migrate Terraform UI hook to command views
2021-02-16 09:36:47 -05:00
Alisdair McDiarmid 3257f31aa7 backend/local: Return diag for refresh empty state
The warning diag added when refreshing an empty state file was never
rendered, and instead a custom (and incorrect) warning was output to the
UI. This commit fixes the dropped diag and removes the custom warning.
2021-02-16 07:23:31 -05:00
Alisdair McDiarmid 2d1976bbda clistate: Update clistate.Locker for command views
The clistate package includes a Locker interface which provides a simple
way for the local backend to lock and unlock state, while providing
feedback to the user if there is a delay while waiting for the lock.
Prior to this commit, the backend was responsible for initializing the
Locker, passing through direct access to the cli.Ui instance.

This structure prevented commands from implementing different
implementations of the state locker UI. In this commit, we:

- Move the responsibility of creating the appropriate Locker to the
  source of the Operation;
- Add the ability to set the context for a Locker via a WithContext
  method;
- Replace the Locker's cli.Ui and Colorize members with a StateLocker
  view;
- Implement views.StateLocker for human-readable UI;
- Update the Locker interface to return detailed diagnostics instead of
  errors, reducing its direct interactions with UI;
- Add a Timeout() method on Locker to allow the remote backend to
  continue to misuse the -lock-timeout flag to cancel pending runs.

When an Operation is created, the StateLocker field must now be
populated with an implementation of Locker. For situations where locking
is disabled, this can be a no-op locker.

This change has no significant effect on the operation of Terraform,
with the exception of slightly different formatting of errors when state
locking or unlocking fails.
2021-02-16 07:19:22 -05:00
Alisdair McDiarmid a7b7cd29fc cli: Migrate Terraform UI hook to command views
Move the code which renders Terraform hook callbacks as UI into the
views package, backed by a views.View instead of a cli.Ui. Update test
setup accordingly.

To allow commands to control this hook, we add a hooks member on the
backend Operation struct. This supersedes the hooks in the Terraform
context, which is not directly controlled by the command logic.

This commit should not change how Terraform works, and is refactoring in
preparation for more changes which move UI code out of the backend.
2021-02-16 07:18:22 -05:00
Alisdair McDiarmid 536c80da23 backend: Add per-operation diagnostic rendering
The enhanced backends (local and remote) need to be able to render
diagnostics during operations. Prior to this commit, this functionality
was supported with a per-backend `ShowDiagnostics` function pointer.

In order to allow users of these backends to control how diagnostics are
rendered, this commit moves that function pointer to the `Operation`
type. This means that a diagnostic renderer is configured for each
operation, rather than once per backend initialization.

Some secondary consequences of this change:

- The `ReportResult` method on the backend is now moved to the
  `Operation` type, as it needs to access the `ShowDiagnostics` callback
  (and nothing else from the backend);
- Tests which assumed that diagnostics would be written to the backend's
  `cli.Ui` instance are migrated to using a new record/playback diags
  helper function;
- Apply, plan, and refresh commands now pass a pointer to the `Meta`
  struct's `showDiagnostics` method.

This commit should not change how Terraform works, and is refactoring in
preparation for more changes which move UI code out of the backend.
2021-02-12 14:30:35 -05:00
Alisdair McDiarmid b2ba650c21 cli: Remove deprecated destroy -force flag
This dramatically simplifies the logic around auto-approve, which is
nice.

Also add test coverage for the manual approve step, for both apply and
destroy, answering both yes and no.
2021-02-03 15:05:05 -05:00
Alisdair McDiarmid 5ca118b4e6 cli: Move resource count code to command package
CountHook is an implementation of terraform.Hook which is used to
calculate how many resources were added, changed, or destroyed during an
apply. This hook was previously injected in the local backend code,
which means that the apply command code has no access to these counts.

This commit moves the CountHook code into the command package, and
removes an unused instance of the hook in the plan code path. The goal
here is moving UI code into the command package.
2021-01-29 15:29:35 -05:00
Jonathan Hall 49ee3d3ef8 Grammar nit: "setup" as a verb should be spelled "set up" 2021-01-26 20:39:11 +01:00
Martin Atkins e6a516d87e backend/local: Use terminal properties to tweak the plan output
We now require the output to accept UTF-8 and we can determine how wide
the terminal (if any) is, so here we begin to make use of that for the
"terraform plan" command.

The horizontal rule is now made of box drawing characters instead of
hyphens and fills the whole terminal width.

The paragraphs of text in the output are now also wrapped to fill the
terminal width, instead of the hard-wrapping we did before.

This is just a start down the road of making better use of the terminal
capabilities. Lots of other commands could benefit from updates like these
too.
2021-01-13 15:37:04 -08:00
Martin Atkins d2c3403ab6 command: Use the new terminal.Streams object
Here we propagate in the initialized terminal.Streams from package main,
and then onwards to backends running in CLI mode.

This also replaces our use of helper/wrappedstreams to determine whether
stdin is a terminal or a pipe. helper/wrappedstreams returns incorrect
file descriptors on Windows, causing StdinPiped to always return false on
that platform and thus causing one of the odd behaviors discussed in

Finally, this includes some wrappers around the ability to look up the
number of columns in the terminal in preparation for use elsewhere. These
wrappers deal with the fact that our unit tests typically won't populate
meta.Streams.
2021-01-13 15:37:04 -08:00
James Bardin 3bc7d77230 update MockProvider usage 2021-01-12 17:47:55 -05:00
James Bardin e614fb9aed refresh is expected for destroy
These tests were not previously running a refresh, and hence did not
expect the resources to be read.
2021-01-08 13:29:54 -05:00
Ben Drucker a39273cfa3 Merge remote-tracking branch 'origin/master' into validate-ignore-empty-provider 2020-12-14 14:39:48 -08:00
James Bardin 7eac9e1d89 set SkipRefresh for plan and apply
The option is set in the same place for plan and apply.
2020-12-10 09:47:13 -05:00
Ben Drucker 2549e53aed add backend refresh test with provider config 2020-12-06 10:02:26 -08:00
Ben Drucker 7e11b97923 Merge remote-tracking branch 'origin/master' into validate-ignore-empty-provider 2020-12-06 09:47:24 -08:00
James Bardin d2c2d58f09 unused 2020-12-02 13:59:19 -05:00
James Bardin de5b022a3b legacy types in backend/local 2020-12-02 12:33:18 -05:00
James Bardin 8e7a9b6312 output test for plan with no root output changes
Module outputs do not show up in the plan, and are not rendered in the
UI.
2020-11-17 16:11:57 -05:00
Ben Drucker afe8b67b95 Merge remote-tracking branch 'origin/master' into validate-ignore-empty-provider
# Conflicts:
#	terraform/eval_validate.go
2020-11-09 16:24:49 -08:00
Alisdair McDiarmid b335918c3c backend: Only show root module output changes
When rendering planned output changes, we need to filter the plan's
output changes to ensure that only root module outputs which have
changed are rendered. Otherwise we will render changes for submodule
outputs, and (with concise diff disabled) render unchanged outputs also.
2020-11-02 10:24:22 -05:00
James Bardin 0b31ffa587 use a single log writer
Use a single log writer instance for all std library logging.

Setup the std log writer in the logging package, and remove boilerplate
from test packages.
2020-10-19 14:29:54 -04:00
James Bardin 6ca477f042 move helper/logging to internal
remove a dead code file too
2020-10-19 14:27:53 -04:00
James Bardin 5eca0788c6 rely solely on the plan changes for outputs
Now that outputs changes are tracked in full, we can remove the
comparisons with the prior state and use the planned changes directly.
2020-10-12 18:59:14 -04:00
James Bardin 103a6cf2db update mock provider call 2020-10-08 13:52:04 -04:00
James Bardin 826ccdd123 re-enable test 2020-10-07 10:44:41 -04:00
James Bardin 37569f5cc3 insert PlanRefresh into the context 2020-09-24 09:34:49 -04:00
James Bardin bc82347a04 fix tests
Update tests to match the new behavior. Some were incorrect, some no
longer make sense, and some just weren't setup to handle th plan api
calls.
2020-09-21 16:17:46 -04:00
James Bardin 312317abd0 wrong instance key in test state
This was never picked up by the tests until now
2020-09-17 09:55:00 -04:00
James Bardin 8658424059 skip plan with no refresh test
We still need to determine if `-refresh=false` is even useful with the
new planning strategy.
2020-09-17 09:55:00 -04:00
James Bardin f52d836e0a fix local backend tests to match new behavior
Leaving plan with -refresh=false tests failing for now.
2020-09-17 09:55:00 -04:00
James Bardin be757bd416 Refresh instances during plan
This change refreshes the instance state during plan, so a complete
Refresh no longer needs to happen before Plan.
2020-09-17 09:54:59 -04:00
Alisdair McDiarmid 09d8355f43 command: Add experimental concise diff renderer
When rendering a diff between current state and projected state, we only
show resources and outputs which have changes. However, we show a full
structural diff for these values, which includes all attributes and
blocks for a changed resource or output. The result can be a very long
diff, which makes it difficult to verify what the changed fields are.

This commit adds an experimental concise diff renderer, which suppresses
most unchanged fields, only displaying the most relevant changes and
some identifying context. This means:

- Always show all identifying attributes, initially defined as `id`,
  `name`, and `tags`, even if unchanged;
- Only show changed, added, or removed primitive values: `string`,
  `number`, or `bool`;
- Only show added or removed elements in unordered collections and
  structural types: `map`, `set`, and `object`;
- Show added or removed elements with any surrounding unchanged elements
  for sequence types: `list` and `tuple`;
- Only show added or removed nested blocks, or blocks with changed
  attributes.

If any attributes, collection elements, or blocks are hidden, a count
is kept and displayed at the end of the parent scope. This ensures that
it is clear that the diff is only displaying a subset of the resource.

The experiment is currently enabled by default, but can be disabled by
setting the TF_X_CONCISE_DIFF environment variable to 0.
2020-09-10 10:35:55 -04:00
Kirill Zaborsky fbd3f191bd
Minor typo 2020-09-03 11:25:55 +03:00
Kristin Laemmert 196c183dda
terraform: remove state from `validate` graph walk (#26063)
This pull reverts a recent change to backend/local which created two context, one with and one without state. Instead I have removed the state entirely from the validate graph (by explicitly passing a states.NewState() to the validate graph builder).

This changed caused a test failure, which (ty so much for the help) @jbardin discovered was inaccurate all along: the test's call to `Validate()` was actually what was removing the output from state. The new expected test output matches terraform's actual behavior on the command line: if you use -target to destroy a resource, an output that references only that resource is *not* removed from state even though that test would lead you to believe it did.

This includes two tests to cover the expected behavior:

TestPlan_varsUnset has been updated so it will panic if it gets more than one request to input a variable
TestPlan_providerArgumentUnset covers #26035

Fixes #26035, #26027
2020-08-31 15:45:39 -04:00
James Bardin 1c09df1a66
Merge pull request #25779 from hashicorp/jbardin/remove-state-attrs
Remove resource state attributes that are no longer in the schema
2020-08-12 10:49:44 -04:00