New option: --generate-import-block to allow users to select whethe…

…r to generate the import.tf (#516)

flag.go

@@ -42,6 +42,7 @@ type FlagSet struct {
 	flagGenerateMappingFile bool
 	flagHCLOnly             bool
 	flagModulePath          string
+	flagGenerateImportBlock bool
 
 	// common flags (auth)
 	flagUseEnvironmentCred     bool
@@ -143,6 +144,9 @@ func (flag FlagSet) DescribeCLI(mode string) string {
 	if flag.flagModulePath != "" {
 		args = append(args, "--module-path="+flag.flagModulePath)
 	}
+	if !flag.flagGenerateImportBlock {
+		args = append(args, "--generate-import-block=true")
+	}
 
 	if flag.flagUseEnvironmentCred {
 		args = append(args, "--use-environment-cred=true")
@@ -352,6 +356,7 @@ func (f FlagSet) BuildCommonConfig() (config.CommonConfig, error) {
 		Parallelism:          f.flagParallelism,
 		HCLOnly:              f.flagHCLOnly,
 		ModulePath:           f.flagModulePath,
+		GenerateImportBlock:  f.flagGenerateImportBlock,
 		TelemetryClient:      initTelemetryClient(f.flagSubscriptionId),
 	}
 

internal/meta/base_meta.go

@@ -10,7 +10,6 @@ import (
 	"path/filepath"
 	"strings"
 
-	"github.com/hashicorp/go-version"
 	tfjson "github.com/hashicorp/terraform-json"
 
 	"github.com/Azure/aztfexport/pkg/config"
@@ -78,21 +77,22 @@ type BaseMeta interface {
 var _ BaseMeta = &baseMeta{}
 
 type baseMeta struct {
-	subscriptionId    string
-	azureSDKCred      azcore.TokenCredential
-	azureSDKClientOpt arm.ClientOptions
-	outdir            string
-	outputFileNames   config.OutputFileNames
-	tf                *tfexec.Terraform
-	resourceClient    *armresources.Client
-	providerVersion   string
-	devProvider       bool
-	providerName      string
-	backendType       string
-	backendConfig     []string
-	providerConfig    map[string]cty.Value
-	fullConfig        bool
-	parallelism       int
+	subscriptionId     string
+	azureSDKCred       azcore.TokenCredential
+	azureSDKClientOpt  arm.ClientOptions
+	outdir             string
+	outputFileNames    config.OutputFileNames
+	tf                 *tfexec.Terraform
+	resourceClient     *armresources.Client
+	providerVersion    string
+	devProvider        bool
+	providerName       string
+	backendType        string
+	backendConfig      []string
+	providerConfig     map[string]cty.Value
+	fullConfig         bool
+	parallelism        int
+	generateImportFile bool
 
 	hclOnly  bool
 	tfclient tfclient.Client
@@ -202,22 +202,23 @@ func NewBaseMeta(cfg config.CommonConfig) (*baseMeta, error) {
 	}
 
 	meta := &baseMeta{
-		subscriptionId:    cfg.SubscriptionId,
-		azureSDKCred:      cfg.AzureSDKCredential,
-		azureSDKClientOpt: cfg.AzureSDKClientOption,
-		outdir:            cfg.OutputDir,
-		outputFileNames:   outputFileNames,
-		resourceClient:    resClient,
-		providerVersion:   cfg.ProviderVersion,
-		devProvider:       cfg.DevProvider,
-		backendType:       cfg.BackendType,
-		backendConfig:     cfg.BackendConfig,
-		providerConfig:    cfg.ProviderConfig,
-		providerName:      cfg.ProviderName,
-		fullConfig:        cfg.FullConfig,
-		parallelism:       cfg.Parallelism,
-		hclOnly:           cfg.HCLOnly,
-		tfclient:          cfg.TFClient,
+		subscriptionId:     cfg.SubscriptionId,
+		azureSDKCred:       cfg.AzureSDKCredential,
+		azureSDKClientOpt:  cfg.AzureSDKClientOption,
+		outdir:             cfg.OutputDir,
+		outputFileNames:    outputFileNames,
+		resourceClient:     resClient,
+		providerVersion:    cfg.ProviderVersion,
+		devProvider:        cfg.DevProvider,
+		backendType:        cfg.BackendType,
+		backendConfig:      cfg.BackendConfig,
+		providerConfig:     cfg.ProviderConfig,
+		providerName:       cfg.ProviderName,
+		fullConfig:         cfg.FullConfig,
+		parallelism:        cfg.Parallelism,
+		generateImportFile: cfg.GenerateImportBlock,
+		hclOnly:            cfg.HCLOnly,
+		tfclient:           cfg.TFClient,
 
 		moduleAddr: moduleAddr,
 		moduleDir:  moduleDir,
@@ -402,18 +403,7 @@ func (meta baseMeta) ExportResourceMapping(ctx context.Context, l ImportList) er
 		return fmt.Errorf("writing the resource mapping to %s: %v", oMapFile, err)
 	}
 
-	// Only generate import.tf when the current using terraform supports plannable import
-	var supportPlannableImport bool
-	if meta.tf == nil {
-		supportPlannableImport = true
-	} else {
-		ver, _, err := meta.tf.Version(ctx, true)
-		if err != nil {
-			return fmt.Errorf("getting terraform version")
-		}
-		supportPlannableImport = ver.GreaterThanOrEqual(version.Must(version.NewVersion("v1.5.0")))
-	}
-	if supportPlannableImport {
+	if meta.generateImportFile {
 		f := hclwrite.NewFile()
 		body := f.Body()
 		for _, item := range l {
@@ -433,6 +423,7 @@ func (meta baseMeta) ExportResourceMapping(ctx context.Context, l ImportList) er
 			return fmt.Errorf("writing the import block to %s: %v", oImportFile, err)
 		}
 	}
+
 	return nil
 }
 

internal/test/query/query_test.go

@@ -97,6 +97,7 @@ resource "azurerm_subnet" "test" {
 				BackendType:          "local",
 				DevProvider:          true,
 				Parallelism:          1,
+				ProviderName:         "azurerm",
 			},
 			ResourceNamePattern: "res-",
 			ARGPredicate:        fmt.Sprintf(`resourceGroup =~ "%s" and type =~ "microsoft.network/virtualnetworks"`, d.RandomRgName()),

internal/test/resmap/e2e_cases_test.go

@@ -80,6 +80,7 @@ func runCase(t *testing.T, d test.Data, c cases.Case) {
 				BackendType:          "local",
 				DevProvider:          true,
 				Parallelism:          1,
+				ProviderName:         "azurerm",
 			},
 			MappingFile: mapFile,
 		},

internal/test/resource/e2e_cases_test.go

@@ -78,6 +78,7 @@ func runCase(t *testing.T, d test.Data, c cases.Case) {
 					BackendType:          "local",
 					DevProvider:          true,
 					Parallelism:          1,
+					ProviderName:         "azurerm",
 				},
 				ResourceId:     rctx.AzureId,
 				TFResourceName: fmt.Sprintf("res-%d", idx),

internal/test/resourcegroup/append_test.go

@@ -91,6 +91,7 @@ resource "azurerm_resource_group" "test3" {
 				BackendType:          "local",
 				DevProvider:          true,
 				Parallelism:          1,
+				ProviderName:         "azurerm",
 			},
 			ResourceNamePattern: "t1",
 		},

internal/test/resourcegroup/hcl_only_test.go

@@ -97,6 +97,7 @@ func runHCLOnly(t *testing.T, d test.Data, c cases.Case) {
 				DevProvider:          true,
 				Parallelism:          10,
 				HCLOnly:              true,
+				ProviderName:         "azurerm",
 			},
 			ResourceGroupName:   d.RandomRgName(),
 			ResourceNamePattern: "res-",

internal/test/resourcegroup/module_test.go

@@ -118,6 +118,8 @@ module "sub-module" {
 				BackendType:          "local",
 				Parallelism:          1,
 				ModulePath:           "", // Import to the root module
+				ProviderName:         "azurerm",
+				GenerateImportBlock:  false,
 			},
 		},
 		PlainUI: true,

main.go

@@ -229,6 +229,12 @@ func main() {
 			Usage:       `The path of the module (e.g. "module1.module2") where the resources will be imported and config generated. Note that only modules whose "source" is local path is supported. Defaults to the root module.`,
 			Destination: &flagset.flagModulePath,
 		},
+		&cli.BoolFlag{
+			Name:        "generate-import-block",
+			EnvVars:     []string{"AZTFEXPORT_GENERATE_IMPORT_BLOCK"},
+			Usage:       `Whether to generate the import.tf that contains the "import" blocks for the Terraform official plannable importing`,
+			Destination: &flagset.flagGenerateImportBlock,
+		},
 		&cli.StringFlag{
 			Name:        "log-path",
 			EnvVars:     []string{"AZTFEXPORT_LOG_PATH"},

pkg/config/config.go

@@ -63,6 +63,8 @@ type CommonConfig struct {
 	TFClient tfclient.Client
 	// TelemetryClient is a client to send telemetry
 	TelemetryClient telemetry.Client
+	// GenerateImportBlock controls whether the export process ends up with a import.tf file that contains the "import" blocks
+	GenerateImportBlock bool
 }
 
 type Config struct {