terraform

History

Martin Atkins 343279110a core: Graph walk loads plugin schemas opportunistically Previously our graph walker expected to recieve a data structure containing schemas for all of the provider and provisioner plugins used in the configuration and state. That made sense back when terraform.NewContext was responsible for loading all of the schemas before taking any other action, but it no longer has that responsiblity. Instead, we'll now make sure that the "contextPlugins" object reaches all of the locations where we need schema -- many of which already had access to that object anyway -- and then load the needed schemas just in time. The contextPlugins object memoizes schema lookups, so we can safely call it many times with the same provider address or provisioner type name and know that it'll still only load each distinct plugin once per Context object. As of this commit, the Context.Schemas method is now a public interface only and not used by logic in the "terraform" package at all. However, that does leave us in a rather tenuous situation of relying on the fact that all practical users of terraform.Context end up calling "Schemas" at some point in order to verify that we have all of the expected versions of plugins. That's a non-obvious implicit dependency, and so in subsequent commits we'll gradually move all responsibility for verifying plugin versions into the caller of terraform.NewContext, which'll heal a long-standing architectural wart whereby the caller is responsible for installing and locating the plugin executables but not for verifying that what's installed is conforming to the current configuration and dependency lock file.		5 years ago
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testdata	core: Functional-style API for terraform.Context	5 years ago
backend.go	core: Functional-style API for terraform.Context	5 years ago
backend_apply.go	core: Functional-style API for terraform.Context	5 years ago
backend_apply_test.go	save apply diagnostics on backend failure	5 years ago
backend_local.go	core: Functional-style API for terraform.Context	5 years ago
backend_local_test.go	core: Functional-style API for terraform.Context	5 years ago
backend_plan.go	core: Functional-style API for terraform.Context	5 years ago
backend_plan_test.go	core: Graph walk loads plugin schemas opportunistically	5 years ago
backend_refresh.go	core: Functional-style API for terraform.Context	5 years ago
backend_refresh_test.go	Move terraform/ to internal/terraform/	5 years ago
backend_test.go	core: Functional-style API for terraform.Context	5 years ago
cli.go	…
hook_state.go	Move terraform/ to internal/terraform/	5 years ago
hook_state_test.go	Move terraform/ to internal/terraform/	5 years ago
local_test.go	…
testing.go	Move terraform/ to internal/terraform/	5 years ago