87 lines
1.8 KiB
Go
87 lines
1.8 KiB
Go
package terraform
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import (
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"fmt"
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"github.com/hashicorp/terraform/config"
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)
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// EvalLocal is an EvalNode implementation that evaluates the
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// expression for a local value and writes it into a transient part of
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// the state.
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type EvalLocal struct {
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Name string
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Value *config.RawConfig
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}
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func (n *EvalLocal) Eval(ctx EvalContext) (interface{}, error) {
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cfg, err := ctx.Interpolate(n.Value, nil)
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if err != nil {
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return nil, fmt.Errorf("local.%s: %s", n.Name, err)
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}
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state, lock := ctx.State()
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if state == nil {
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return nil, fmt.Errorf("cannot write local value to nil state")
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}
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// Get a write lock so we can access the state
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lock.Lock()
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defer lock.Unlock()
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// Look for the module state. If we don't have one, create it.
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mod := state.ModuleByPath(ctx.Path())
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if mod == nil {
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mod = state.AddModule(ctx.Path())
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}
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// Get the value from the config
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var valueRaw interface{} = config.UnknownVariableValue
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if cfg != nil {
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var ok bool
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valueRaw, ok = cfg.Get("value")
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if !ok {
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valueRaw = ""
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}
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if cfg.IsComputed("value") {
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valueRaw = config.UnknownVariableValue
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}
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}
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if mod.Locals == nil {
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// initialize
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mod.Locals = map[string]interface{}{}
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}
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mod.Locals[n.Name] = valueRaw
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return nil, nil
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}
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// EvalDeleteLocal is an EvalNode implementation that deletes a Local value
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// from the state. Locals aren't persisted, but we don't need to evaluate them
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// during destroy.
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type EvalDeleteLocal struct {
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Name string
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}
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func (n *EvalDeleteLocal) Eval(ctx EvalContext) (interface{}, error) {
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state, lock := ctx.State()
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if state == nil {
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return nil, nil
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}
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// Get a write lock so we can access this instance
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lock.Lock()
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defer lock.Unlock()
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// Look for the module state. If we don't have one, create it.
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mod := state.ModuleByPath(ctx.Path())
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if mod == nil {
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return nil, nil
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}
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delete(mod.Locals, n.Name)
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return nil, nil
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}
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