Init should only _add_ values, not remove them.
During graph execution, there are steps that expect that a state isn't
being actively pruned out from under it. Namely: writing deposed states.
Writing deposed states has no way to handle if a state changes
underneath it because the only way to uniquely identify a deposed state
is its index in the deposed array. When destroying deposed resources, we
set the value to `<nil>`. If the array is pruned before the next deposed
destroy, then the indexes have changed, and this can cause a crash.
This PR does the following (with more details below):
* `init()` no longer prunes.
* `ReadState()` always prunes before returning. I can't think of a
scenario where this is unsafe since generally we can always START
from a pruned state, its just causing problems to prune
mid-execution.
* Exported State APIs updated to be robust against nil ModuleStates.
Instead, I think we should adopt the following semantics for init/prune
in our structures that support it (Diff, for example). By having
consistent semantics around these functions, we can avoid this in the
future and have set expectations working with them.
* `init()` (in anything) will only ever be additive, and won't change
ordering or existing values. It won't remove values.
* `prune()` is destructive, expectedly.
* Functions on a structure must not assume a pruned structure 100% of
the time. They must be robust to handle nils. This is especially
important because in many cases values such as `Modules` in state
are exported so end users can simply modify them outside of the
exported APIs.
This PR may expose us to unknown crashes but I've tried to cover our
cases in exposed APIs by checking for nil.
Fixes#10439
When a CBD resource depends on a non-CBD resource, the non-CBD resource
is auto-promoted to CBD. This was done in
cf3a259. This PR makes it so that we
also set the config CBD to true. This causes the proper runtime
execution behavior to occur where we depose state and so on.
So in addition to simple graph edge tricks we also treat the non-CBD
resources as CBD resources.
This change doesn't make much sense now, as projects are read-only
anyways, so there's not a lot that importing really does for you--you
can already reference pre-existing projects just by defining them in
your config.
But as we discussed #10425, this change made more and more sense. In a
world where projects can be created, we can no longer reference
pre-existing projects just by defining them in config. We get that
ability back by making projects importable.
* provider/aws: Add DeploymentRollback as a valid TriggerEvent type
* provider/aws: Add auto_rollback_configuration to aws_codedeploy_deployment_group
* provider/aws: Document auto_rollback_configuration
- part of aws_codedeploy_deployment_group
* provider/aws: Support removing and disabling auto_rollback_configuration
- part of aws_codedeploy_deployment_group resource
- when removing configuration, ensure events are removed
- when disabling configuration, preserve events in case configuration is re-enabled
* provider/aws: Add alarm_configuration to aws_codedeploy_deployment_group
* provider/aws: Document alarm_configuration
- part of aws_codedeploy_deployment_group
* provider/aws: Support removing alarm_configuration
- part of aws_codedeploy_deployment_group resource
- disabling configuration doesn't appear to work...
* provider/aws: Refactor auto_rollback_configuration tests
- Add create test
- SKIP failing test for now
- Add tests for build & map functions
* provider/aws: Refactor new aws_code_deploy_deployment_group tests
- alarm_configuration and auto_rollback_configuration only
- add assertions to deployment_group basic test
- rename config funcs to be more easy to read
- group public tests together
* provider/aws: A max of 10 alarms can be added to a deployment group.
- aws_code_deploy_deployment_group.alarm_configuration.alarms
- verified this causes test failure with expected exception
* provider/aws: Test disabling alarm_configuration and auto_rollback_configuration
- the tests now pass after rebasing the latest master branch
Mitchell Hashimoto