6 Commits (4bbabb3df0cb9ecd4632f0acbae44d4e02900514)

Author	SHA1	Message	Date
Martin Atkins	f753974bb3	plugin/discovery: Installer interface, and provider implementation ... Previously we had a "getProvider" function type used to implement plugin fetching. Here we replace that with an interface type, initially with just a "Get" function. For now this just simplifies the interface by allowing the target directory and protocol version to be members of the struct rather than passed as arguments. A later change will extend this interface to also include a method to purge unused plugins, so that upgrading frequently doesn't leave behind a trail of unused executable files.	9 years ago
Martin Atkins	4ba20f9c1c	command init: show suggested constraints for unconstrained providers ... When running "terraform init" with providers that are unconstrained, we will now produce information to help the user update configuration to constrain for the particular providers that were chosen, to prevent inadvertently drifting onto a newer major release that might contain breaking changes. A ~> constraint is used here because pinning to a single specific version is expected to create dependency hell when using child modules. By using this constraint mode, which allows minor version upgrades, we avoid the need for users to constantly adjust version constraints across many modules, but make major version upgrades still be opt-in. Any constraint at all in the configuration will prevent the display of these suggestions, so users are free to use stronger or weaker constraints if desired, ignoring the recommendation.	9 years ago
James Bardin	fdeb3d929c	Add Versions.Sort ... Sort versions from newest to oldest.	9 years ago
Martin Atkins	e3401947a6	plugin/discovery: PluginRequirements can specify SHA256 digests ... As well as constraining plugins by version number, we also want to be able to pin plugins to use specific executables so that we can detect drift in available plugins between commands. This commit allows such requirements to be specified, but doesn't yet specify any such requirements, nor validate them.	9 years ago
James Bardin	fa49c69793	expose Version.NewerThan ... NewerThan is useful outside of the package	9 years ago
Martin Atkins	a1e29ae290	plugin/discovery: use go-version instead of semver ... The semver library we were using doesn't have support for a "pessimistic constraint" where e.g. the user wants to accept only minor or patch version upgrades. This is important for providers since users will generally want to pin their dependencies to not inadvertantly accept breaking changes. So here we switch to hashicorp's home-grown go-version library, which has the ~> constraint operator for this sort of constraint. Given how much the old version object was already intruding into the interface and creating dependency noise in callers, this also now wraps the "raw" go-version objects in package-local structs, thus keeping the details encapsulated and allowing callers to deal just with this package's own types.	9 years ago