Adds `GetOkRaw` as a schema function. This should only be used to verify
boolean attributes are either set or not set, regardless of their zero
value for their type. There are a few small use cases outside of the boolean
type where this will be helpful as well.
Overall, this shouldn't detract from the zero-value checks that `GetOK()`
currently has, and should only be used when absolutely needed. However,
there are enough use-cases for this addition without checking for the
zero-value of the type, that this is needed.
Primary use case is for a boolean attribute that is `Optional` and `Computed`,
without a default value. There's currently no way to verify that the boolean
attribute was explicitly set to the zero-value literal with the current
`GetOk()` function. This new function allows for that check, keeping the
`Computed` check for the returned `exists` boolean.
```
$ make test TEST=./helper/schema TESTARGS="-run=TestResourceDataGetOkRaw"
==> Checking that code complies with gofmt requirements...
go generate $(go list ./... | grep -v /terraform/vendor/)
2017/08/02 11:17:32 Generated command/internal_plugin_list.go
go test -i ./helper/schema || exit 1
echo ./helper/schema | \
xargs -t -n4 go test -run=TestResourceDataGetOkRaw -timeout=60s -parallel=4
go test -run=TestResourceDataGetOkRaw -timeout=60s -parallel=4 ./helper/schema
ok github.com/hashicorp/terraform/helper/schema 0.005s
```
We can't check lineage in the remote state instance, because we may need
to overwrite a state with a new lineage. Whil it's tempting to add an
optional interface for this, like OverwriteState(), optional interfaces
are never _really_ optional, and will have to be implemented by any
wrapper types as well.
Another solution may be to add a State.Supersedes field to indicate that
we intend to replace an existing state, but that may not be worth the
extra check either.
When remote backend imeplemtations create a new named state, they may
need to acquire a lock and/or save an actual empty state to the backend.
Copy this behavior in the inmem backend for testing.
This restores the earlier behavior of the first positional argument to
terraform init in 0.9, but as a command line option.
The positional argument was removed to improve consistency with other
commands that take a working directory as their first positional argument.
It was originally intended that this functionality would return in a
later release along with some other general improvements to Terraform's
module handling, but we're introducing here an interim solution that
uses the existing module source concept, to allow for easier porting of
workflows that previously depended on the automatic copy behavior.
In a future release this feature may change again as the module
improvements design firms up, but we expect it to be broadly compatible
with this temporary state.
The field reader code path is extremely inefficient, but refactoring
it all is much to invasive a change at the moment.
Have DiffFieldReader internally cache results for ReadField.
In order to use a backend for the state commands, we need an initialized
meta. Use a single Meta instance rather than temporary ones to make sure
the backends are initialized properly.
Radek Simko