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package terraform
import (
"sync"
"github.com/hashicorp/terraform/config"
)
// EvalContext is the interface that is given to eval nodes to execute.
type EvalContext interface {
// Stopped returns a channel that is closed when evaluation is stopped
// via Terraform.Context.Stop()
Stopped() <-chan struct{}
// Path is the current module path.
Path() []string
// Hook is used to call hook methods. The callback is called for each
// hook and should return the hook action to take and the error.
Hook(func(Hook) (HookAction, error)) error
// Input is the UIInput object for interacting with the UI.
Input() UIInput
// InitProvider initializes the provider with the given name and
// returns the implementation of the resource provider or an error.
//
// It is an error to initialize the same provider more than once.
InitProvider(string) (ResourceProvider, error)
// Provider gets the provider instance with the given name (already
// initialized) or returns nil if the provider isn't initialized.
Provider(string) ResourceProvider
// CloseProvider closes provider connections that aren't needed anymore.
CloseProvider(string) error
// ConfigureProvider configures the provider with the given
// configuration. This is a separate context call because this call
// is used to store the provider configuration for inheritance lookups
// with ParentProviderConfig().
ConfigureProvider(string, *ResourceConfig) error
SetProviderConfig(string, *ResourceConfig) error
ParentProviderConfig(string) *ResourceConfig
// ProviderInput and SetProviderInput are used to configure providers
// from user input.
ProviderInput(string) map[string]interface{}
SetProviderInput(string, map[string]interface{})
// InitProvisioner initializes the provisioner with the given name and
// returns the implementation of the resource provisioner or an error.
//
// It is an error to initialize the same provisioner more than once.
InitProvisioner(string) (ResourceProvisioner, error)
// Provisioner gets the provisioner instance with the given name (already
// initialized) or returns nil if the provisioner isn't initialized.
Provisioner(string) ResourceProvisioner
// CloseProvisioner closes provisioner connections that aren't needed
// anymore.
CloseProvisioner(string) error
// Interpolate takes the given raw configuration and completes
// the interpolations, returning the processed ResourceConfig.
//
// The resource argument is optional. If given, it is the resource
// that is currently being acted upon.
Interpolate(*config.RawConfig, *Resource) (*ResourceConfig, error)
// SetVariables sets the variables for the module within
// this context with the name n. This function call is additive:
// the second parameter is merged with any previous call.
SetVariables(string, map[string]interface{})
// Diff returns the global diff as well as the lock that should
// be used to modify that diff.
Diff() (*Diff, *sync.RWMutex)
// State returns the global state as well as the lock that should
// be used to modify that state.
State() (*State, *sync.RWMutex)
}
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