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package terraform
import (
"fmt"
"log"
)
// EvalRefresh is an EvalNode implementation that does a refresh for
// a resource.
type EvalRefresh struct {
Provider *ResourceProvider
State **InstanceState
Info *InstanceInfo
Output **InstanceState
}
// TODO: test
func (n *EvalRefresh) Eval(ctx EvalContext) (interface{}, error) {
provider := *n.Provider
state := *n.State
// If we have no state, we don't do any refreshing
if state == nil {
log.Printf("[DEBUG] refresh: %s: no state, not refreshing", n.Info.Id)
return nil, nil
}
// Call pre-refresh hook
err := ctx.Hook(func(h Hook) (HookAction, error) {
return h.PreRefresh(n.Info, state)
})
if err != nil {
return nil, err
}
// Refresh!
state, err = provider.Refresh(n.Info, state)
if err != nil {
return nil, fmt.Errorf("%s: %s", n.Info.Id, err.Error())
}
// Call post-refresh hook
err = ctx.Hook(func(h Hook) (HookAction, error) {
return h.PostRefresh(n.Info, state)
})
if err != nil {
return nil, err
}
if n.Output != nil {
*n.Output = state
}
return nil, nil
}
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