Implementation notes:
* The hash implementation was not considering key value, causing "diffs
did not match" errors when a value was updated. Switching to default
HashResource implementation fixes this
* Using HashResource as a default exposed a bug in helper/schema that
needed to be fixed so the Set function is picked up properly during
Read
* Stop writing back values into the `key` attribute; it triggers extra
diffs when `default` is used. Computed values all just go into `var`.
* Includes a state migration to prevent unnecessary diffs based on
"key" attribute hashcodes changing.
In the tests:
* Switch from leaning on the public demo Consul instance to requiring a
CONSUL_HTTP_ADDR variable be set pointing to a `consul agent -dev`
instance to be used only for testing.
* Add a test that exposes the updating issues and covers the fixes
Fixes#774Fixes#1866Fixes#3023
These resources use ARM to get keys for the storage API, but then use
the storage REST API as per the ASM provider. The code is significantly
reworked with better logging and error handling. The key functions can
be reused for queues and file storage resources when they get added.
References to computed list-ish attributes (set, list, map) were being
improperly resolved as an empty list `[]` during the plan phase (when
the value of the reference is not yet known) instead of as an
UnknownValue.
A "diffs didn't match" failure in an AWS DirectoryServices test led to
this discovery (and this commit fixes the failing test):
https://travis-ci.org/hashicorp/terraform/jobs/104812951
Refs #2157 which has the original work to support computed list
attributes at all. This is just a simple tweak to that work.
/cc @radeksimko
If a variable type which is invalid (e.g. "stringg") is declared, we now
include the invalid type description in the error message to make it
easier to track down the source of the error in the source file.
This commit adds support for declaring variable types in Terraform
configuration. Historically, the type has been inferred from the default
value, defaulting to string if no default was supplied. This has caused
users to devise workarounds if they wanted to declare a map but provide
values from a .tfvars file (for example).
The new syntax adds the "type" key to variable blocks:
```
variable "i_am_a_string" {
type = "string"
}
variable "i_am_a_map" {
type = "map"
}
```
This commit does _not_ extend the type system to include bools, integers
or floats - the only two types available are maps and strings.
Validation is performed if a default value is provided in order to
ensure that the default value type matches the declared type.
In the case that a type is not declared, the old logic is used for
determining the type. This allows backwards compatiblity with previous
Terraform configuration.
