github.com/GoogleCloudPlatform/terraformer@v0.8.18/cmd/plan.go (about)

     1  // Copyright 2018 The Terraformer Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  package cmd
    15  
    16  import (
    17  	"encoding/json"
    18  	"fmt"
    19  	"log"
    20  	"os"
    21  	"path/filepath"
    22  
    23  	"github.com/GoogleCloudPlatform/terraformer/terraformutils"
    24  	"github.com/spf13/cobra"
    25  )
    26  
    27  type ImportPlan struct {
    28  	Version          string
    29  	Provider         string
    30  	Options          ImportOptions
    31  	Args             []string
    32  	ImportedResource map[string][]terraformutils.Resource
    33  }
    34  
    35  func newPlanCmd() *cobra.Command {
    36  	options := ImportOptions{
    37  		Plan: true,
    38  	}
    39  	cmd := &cobra.Command{
    40  		Use:           "plan",
    41  		Short:         "Plan to import current state to Terraform configuration",
    42  		Long:          "Plan to import current state to Terraform configuration",
    43  		SilenceUsage:  true,
    44  		SilenceErrors: false,
    45  		//Version:       version.String(),
    46  	}
    47  
    48  	for _, subcommand := range providerImporterSubcommands() {
    49  		cmd.AddCommand(subcommand(options))
    50  	}
    51  	return cmd
    52  }
    53  
    54  func newCmdPlanImporter(options ImportOptions) *cobra.Command {
    55  	cmd := &cobra.Command{
    56  		Use:   "plan",
    57  		Short: "Import planned state to Terraform configuration",
    58  		Long:  "Import planned state to Terraform configuration",
    59  		Args:  cobra.ExactArgs(1),
    60  		RunE: func(cmd *cobra.Command, args []string) error {
    61  			plan, err := LoadPlanfile(args[0])
    62  			if err != nil {
    63  				return err
    64  			}
    65  
    66  			var provider terraformutils.ProviderGenerator
    67  			if providerGen, ok := providerGenerators()[plan.Provider]; ok {
    68  				provider = providerGen()
    69  			} else {
    70  				return fmt.Errorf("unsupported provider: %s", plan.Provider)
    71  			}
    72  
    73  			if err = provider.Init(plan.Args); err != nil {
    74  				return err
    75  			}
    76  
    77  			for _, service := range plan.Options.Resources {
    78  				if err = provider.InitService(service, options.Verbose); err != nil {
    79  					return err
    80  				}
    81  			}
    82  
    83  			return ImportFromPlan(provider, plan)
    84  		},
    85  	}
    86  	return cmd
    87  }
    88  
    89  func LoadPlanfile(path string) (*ImportPlan, error) {
    90  	f, err := os.Open(path)
    91  	if err != nil {
    92  		return nil, err
    93  	}
    94  	defer f.Close()
    95  
    96  	plan := &ImportPlan{}
    97  	dec := json.NewDecoder(f)
    98  	dec.DisallowUnknownFields()
    99  	if err := dec.Decode(plan); err != nil {
   100  		return nil, err
   101  	}
   102  
   103  	if plan.Version != version {
   104  		return nil, fmt.Errorf("planfile version did not match. expected: %s, actual: %s", version, plan.Version)
   105  	}
   106  
   107  	return plan, nil
   108  }
   109  
   110  func ExportPlanFile(plan *ImportPlan, path, filename string) error {
   111  	plan.Version = version
   112  
   113  	planfilePath := filepath.Join(path, filename)
   114  	log.Println("Saving planfile to", planfilePath)
   115  
   116  	if err := os.MkdirAll(path, os.ModePerm); err != nil {
   117  		return err
   118  	}
   119  
   120  	f, err := os.OpenFile(planfilePath, os.O_RDWR|os.O_CREATE|os.O_TRUNC, os.ModePerm)
   121  	if err != nil {
   122  		return err
   123  	}
   124  	defer f.Close()
   125  
   126  	enc := json.NewEncoder(f)
   127  	enc.SetIndent("", "\t")
   128  	return enc.Encode(plan)
   129  }