Prior to Terraform 0.7, lists in Terraform were just a shallow abstraction
on top of strings with a magic delimiter between items. Wrapping a single
string in brackets in the configuration was Terraform's prompt that it
needed to split the string on that delimiter during interpolation.
In 0.7, when first-class lists were added, this convention was preserved
by flattening lists-of-lists by one level when they were encountered in
configuration. However, there was an oversight in that change where it
did not correctly handle the case where the inner list was unknown.
In #14135 we removed some code that was flattening partially-unknown lists
into fully-unknown (untyped) values. This inadvertently exposed the missed
case from the previous paragraph, causing issues for list-wrapped splat
expressions with unknown members. While this worked fine for resources,
due to some fixup done inside helper/schema, this did not work for other
interpolation contexts such as module blocks.
Various attempts to fix this up and restore the flattening behavior
selectively were unsuccessful, due to a proliferation of assumptions all
over the core code that would be too risky to change just to fix this bug.
This change, then, takes the different approach of removing the
requirement that splats be presented inside list brackets. This
requirement didn't make much sense anymore anyway, since no other
list-returning expression had this constraint and so the rest of Terraform
was already successfully dealing with both cases.
This leaves us with two different scenarios:
- For resource arguments, existing normalization code in helper/schema
does its own flattening that preserves compatibility with the common
practice of using bracketed splats. This change proves this with a test
within the "test" provider that exercises the whole Terraform core and
helper/schema stack that assigns bracketed splats to list and set
attributes.
- For arguments in other blocks, such as in module callsites, the
interpolator's own flattening behavior applies to known lists,
preserving compatibility with configurations from before
partially-computed splats were possible, but those wishing to use
partially-computed splats are required to drop the surrounding brackets.
This is less concerning because this scenario was introduced only in
0.9.5, so the scope for breakage is limited to those who adopted this
new feature quickly after upgrading.
As of this commit, the recommendation is to stop using brackets around
splats but the old form continues to be supported for backward
compatibility. In a future _major_ version of Terraform we will probably
phase out this legacy form to improve consistency, but for now both
forms are acceptable at the expense of some (pre-existing) weird behavior
when _actual_ lists-of-lists are used.
This addresses #14521 by officially adopting the suggested workaround of
dropping the brackets around the splat. However, it doesn't yet allow
passing of a partially-unknown list between modules: that still violates
assumptions in Terraform's core, so for the moment partially-unknown lists
work only within a _single_ interpolation expression, and cannot be
passed around between expressions. Until more holistic work is done to
improve Terraform's type handling, passing a partially-unknown splat
through to a module will result in a fully-unknown list emerging on
the other side, just as was the case before #14135; this change just
addresses the fact that this was failing with an error in 0.9.5.
* Support importing google_sql_user
* Updated documentation to reflect that passwords are not retrieved.
* Added additional documentation detailing use.
* Removed unneeded d.setId() line from GoogleSqlUser Read method.
* Changed an errors.New() call to fmt.Errorf().
* Migrate schemas of existing GoogleSqlUser resources.
* Remove explicitly setting 'id' property
* Added google_sql_user to importability page.
* Changed separator to '/' from '.' and updated tests + debug messages.
* Add Network Alias configuration with network options
* Handle case where there's no network option
* Handle use case where network option is not available
* Handle use case where network option is not available
* Network alias only on user defined network
* Update documentation for docker provider on network aliases
* Remove unused variable
* Update documentation
* add unit test for docker container network
* fix unit test for docker container network
* Document source block for archive_file data source.
* Add example for archive_file source block.
* Capitalize Optional/Required for consistency with majority of provider docs.
* core/providersplit: Split OPC Provider to separate repo
As we march towards Terraform 0.10.0, we are going to start building the
terraform providers as separate binaries - this will allow us to
continually release them. Before we go to 0.10.0, we need to be able to
continue building providers in the same manner, therefore, we have
hardcoded the path of the provider in the generate-plugins.go file
The interim solution will require us to vendor the opc provider and any
child dependencies, but when we get to 0.10.0, we will no longer have to
do this - the core will auto download the plugin binary. The plugin
package will have it's own dependencies vendored as well.
* core/providersplit: Removing the builtin version of OPC provider
* core/providersplit: Vendoring the OPC plugin
* core/providersplit: update internal plugin list
* core/providersplit: remove unused govendor item
Correctly sets the attribute `ip_address` in the `opc_compute_ip_address_reservation` resource.
Also updates documentation for the `ip_address_pool` attribute.
```
$ make testacc TEST=./builtin/providers/opc TESTARGS="-run=TestAccOPCIPAddressReservation_Basic"
==> Checking that code complies with gofmt requirements...
go generate $(go list ./... | grep -v /terraform/vendor/)
2017/05/16 10:15:53 Generated command/internal_plugin_list.go
TF_ACC=1 go test ./builtin/providers/opc -v -run=TestAccOPCIPAddressReservation_Basic -timeout 120m
=== RUN TestAccOPCIPAddressReservation_Basic
--- PASS: TestAccOPCIPAddressReservation_Basic (22.60s)
PASS
ok github.com/hashicorp/terraform/builtin/providers/opc 22.604s
```
The author made this mistake at the beginning. With the original sample, you can't create `aws_appautoscaling_policy` properly. No threshold data in it. It is hard to troubleshoot this issue because there is no error to run the sample with `metric_interval_lower_bound = 0'
The existing "tag" field on autoscaling groups is very limited in that it
cannot be used in conjunction with interpolation preventing from adding
dynamic tag entries.
Other AWS resources don't have this restriction on tags because they work
directly on the map type.
AWS autoscaling groups on the other hand have an additional field
"propagate_at_launch" which is not usable with a pure map type.
This fixes it by introducing an additional field called "tags" which
allows specifying a list of maps. This preserves the possibility to
declare tags as with the "tag" field but additionally allows to
construct lists of maps using interpolation syntax.
* Adds ExpressRoute circuit documentation
* Adds tests and doc improvements
* Code for basic Express Route Circuit support
* Use the built-in validation helper
* Added ignoreCaseDiffSuppressFunc to a few fields
* Added more information to docs
* Touchup
* Moving SKU properties into a set.
* Updates doc
* A bit more tweaks
* Switch to Sprintf for test string
* Updating the acceptance test name for consistency
* Added new evaluation_delay field
Added new evaluation_delay parameter to pass it through the datadog monitor api
* Changed tests for new evaluation_delay field
* changed documentation
* added vmss with managed disk support
* Update vmss docs
* update vmss test
* added vmss managed disk import test
* update vmss tests
* remove unused test resources
* reverting breaking changes on storage_os_disk and storage_image_reference
* updated vmss tests and documentation
* updated vmss flatten osdisk
* updated vmss resource and import test
* update name in vmss osdisk
* update vmss test to include a blank name
* update vmss test to include a blank name
* Add resource
* Add tests
* Add documentation
* Fix invalid comment
* Remove MinItems
* Add newline
* Store expected ID and format
* Add import note
* expiration_time can be computed if dataset has an expiration_time set
* Handle 404 using new check function
Martin Atkins