1package terraform
2
3import (
4	"fmt"
5	"log"
6
7	"github.com/hashicorp/terraform/addrs"
8	"github.com/hashicorp/terraform/providers"
9	"github.com/hashicorp/terraform/states"
10	"github.com/hashicorp/terraform/tfdiags"
11)
12
13// EvalImportState is an EvalNode implementation that performs an
14// ImportState operation on a provider. This will return the imported
15// states but won't modify any actual state.
16type EvalImportState struct {
17	Addr     addrs.ResourceInstance
18	Provider *providers.Interface
19	ID       string
20	Output   *[]providers.ImportedResource
21}
22
23// TODO: test
24func (n *EvalImportState) Eval(ctx EvalContext) (interface{}, error) {
25	absAddr := n.Addr.Absolute(ctx.Path())
26	provider := *n.Provider
27	var diags tfdiags.Diagnostics
28
29	{
30		// Call pre-import hook
31		err := ctx.Hook(func(h Hook) (HookAction, error) {
32			return h.PreImportState(absAddr, n.ID)
33		})
34		if err != nil {
35			return nil, err
36		}
37	}
38
39	resp := provider.ImportResourceState(providers.ImportResourceStateRequest{
40		TypeName: n.Addr.Resource.Type,
41		ID:       n.ID,
42	})
43	diags = diags.Append(resp.Diagnostics)
44	if diags.HasErrors() {
45		return nil, diags.Err()
46	}
47
48	imported := resp.ImportedResources
49
50	for _, obj := range imported {
51		log.Printf("[TRACE] EvalImportState: import %s %q produced instance object of type %s", absAddr.String(), n.ID, obj.TypeName)
52	}
53
54	if n.Output != nil {
55		*n.Output = imported
56	}
57
58	{
59		// Call post-import hook
60		err := ctx.Hook(func(h Hook) (HookAction, error) {
61			return h.PostImportState(absAddr, imported)
62		})
63		if err != nil {
64			return nil, err
65		}
66	}
67
68	return nil, nil
69}
70
71// EvalImportStateVerify verifies the state after ImportState and
72// after the refresh to make sure it is non-nil and valid.
73type EvalImportStateVerify struct {
74	Addr  addrs.ResourceInstance
75	State **states.ResourceInstanceObject
76}
77
78// TODO: test
79func (n *EvalImportStateVerify) Eval(ctx EvalContext) (interface{}, error) {
80	var diags tfdiags.Diagnostics
81
82	state := *n.State
83	if state.Value.IsNull() {
84		diags = diags.Append(tfdiags.Sourceless(
85			tfdiags.Error,
86			"Cannot import non-existent remote object",
87			fmt.Sprintf(
88				"While attempting to import an existing object to %s, the provider detected that no object exists with the given id. Only pre-existing objects can be imported; check that the id is correct and that it is associated with the provider's configured region or endpoint, or use \"terraform apply\" to create a new remote object for this resource.",
89				n.Addr.String(),
90			),
91		))
92	}
93
94	return nil, diags.ErrWithWarnings()
95}
96