vendor/github.com/hashicorp/terraform/moduledeps/dependencies.go

   1 package moduledeps
   2
   3 import (
   4         "github.com/hashicorp/terraform/plugin/discovery"
   5 )
   6
   7 // Providers describes a set of provider dependencies for a given module.
   8 //
   9 // Each named provider instance can have one version constraint.
  10 type Providers map[ProviderInstance]ProviderDependency
  11
  12 // ProviderDependency describes the dependency for a particular provider
  13 // instance, including both the set of allowed versions and the reason for
  14 // the dependency.
  15 type ProviderDependency struct {
  16         Constraints discovery.Constraints
  17         Reason      ProviderDependencyReason
  18 }
  19
  20 // ProviderDependencyReason is an enumeration of reasons why a dependency might be
  21 // present.
  22 type ProviderDependencyReason int
  23
  24 const (
  25         // ProviderDependencyExplicit means that there is an explicit "provider"
  26         // block in the configuration for this module.
  27         ProviderDependencyExplicit ProviderDependencyReason = iota
  28
  29         // ProviderDependencyImplicit means that there is no explicit "provider"
  30         // block but there is at least one resource that uses this provider.
  31         ProviderDependencyImplicit
  32
  33         // ProviderDependencyInherited is a special case of
  34         // ProviderDependencyImplicit where a parent module has defined a
  35         // configuration for the provider that has been inherited by at least one
  36         // resource in this module.
  37         ProviderDependencyInherited
  38
  39         // ProviderDependencyFromState means that this provider is not currently
  40         // referenced by configuration at all, but some existing instances in
  41         // the state still depend on it.
  42         ProviderDependencyFromState
  43 )