4 Commits (cec20a41eb13d9d013863bb0dfd9287a628d8c23)

Author	SHA1	Message	Date
Martin Atkins	88e76fa9ef	configs/configschema: Introduce the NestingGroup mode for blocks ... In study of existing providers we've found a pattern we werent previously accounting for of using a nested block type to represent a group of arguments that relate to a particular feature that is always enabled but where it improves configuration readability to group all of its settings together in a nested block. The existing NestingSingle was not a good fit for this because it is designed under the assumption that the presence or absence of the block has some significance in enabling or disabling the relevant feature, and so for these always-active cases we'd generate a misleading plan where the settings for the feature appear totally absent, rather than showing the default values that will be selected. NestingGroup is, therefore, a slight variation of NestingSingle where presence vs. absence of the block is not distinguishable (it's never null) and instead its contents are treated as unset when the block is absent. This then in turn causes any default values associated with the nested arguments to be honored and displayed in the plan whenever the block is not explicitly configured. The current SDK cannot activate this mode, but that's okay because its "legacy type system" opt-out flag allows it to force a block to be processed in this way anyway. We're adding this now so that we can introduce the feature in a future SDK without causing a breaking change to the protocol, since the set of possible block nesting modes is not extensible.	7 years ago
Martin Atkins	72e279e6b2	providers: Consistently use int64 for schema versions ... The rest of Terraform is still using uint64 for this in various spots, but we'll update that gradually later. We use int64 here because that matches what's used in our protobuf definition, and unsigned integers are not portable across all of the protobuf target languages anyway.	8 years ago
Martin Atkins	4fe9632f09	plugin: Establish our current plugin protocol as version 5 ... The main significant change here is that the package name for the proto definition is "tfplugin5", which is important because this name is part of the wire protocol for references to types defined in our package. Along with that, we also move the generated package into "internal" to make it explicit that importing the generated Go package from elsewhere is not the right approach for externally-implemented SDKs, which should instead vendor the proto definition they are using and generate their own stubs to ensure that the wire protocol is the only hard dependency between Terraform Core and plugins. After this is merged, any provider binaries built against our helper/schema package will need to be rebuilt so that they use the new "tfplugin5" package name instead of "proto". In a future commit we will include more elaborate and organized documentation on how an external codebase might make use of our RPC interface definition to implement an SDK, but the primary concern here is to ensure we have the right wire package name before release.	8 years ago
James Bardin	c07ce1cd4b	move conversion functions into separate package ... Managing which function need to be shared between the terraform plugin and the helper plugin without creating cycles was becoming difficult. Move all functions related to converting between terraform and proto type into plugin/convert.	8 years ago