github.com/danp/terraform@v0.9.5-0.20170426144147-39d740081351/builtin/providers/ignition/resource_ignition_file.go (about)

     1  package ignition
     2  
     3  import (
     4  	"encoding/base64"
     5  	"fmt"
     6  
     7  	"github.com/coreos/ignition/config/types"
     8  	"github.com/hashicorp/terraform/helper/schema"
     9  )
    10  
    11  func resourceFile() *schema.Resource {
    12  	return &schema.Resource{
    13  		Exists: resourceFileExists,
    14  		Read:   resourceFileRead,
    15  		Schema: map[string]*schema.Schema{
    16  			"filesystem": &schema.Schema{
    17  				Type:     schema.TypeString,
    18  				Required: true,
    19  				ForceNew: true,
    20  			},
    21  			"path": &schema.Schema{
    22  				Type:     schema.TypeString,
    23  				Required: true,
    24  				ForceNew: true,
    25  			},
    26  			"content": &schema.Schema{
    27  				Type:     schema.TypeList,
    28  				Optional: true,
    29  				ForceNew: true,
    30  				MaxItems: 1,
    31  				Elem: &schema.Resource{
    32  					Schema: map[string]*schema.Schema{
    33  						"mime": &schema.Schema{
    34  							Type:     schema.TypeString,
    35  							Optional: true,
    36  							ForceNew: true,
    37  							Default:  "text/plain",
    38  						},
    39  
    40  						"content": &schema.Schema{
    41  							Type:     schema.TypeString,
    42  							Required: true,
    43  							ForceNew: true,
    44  						},
    45  					},
    46  				},
    47  			},
    48  			"source": &schema.Schema{
    49  				Type:     schema.TypeList,
    50  				Optional: true,
    51  				ForceNew: true,
    52  				MaxItems: 1,
    53  				Elem: &schema.Resource{
    54  					Schema: map[string]*schema.Schema{
    55  						"source": &schema.Schema{
    56  							Type:     schema.TypeString,
    57  							Optional: true,
    58  							ForceNew: true,
    59  						},
    60  						"compression": &schema.Schema{
    61  							Type:     schema.TypeString,
    62  							Optional: true,
    63  							ForceNew: true,
    64  						},
    65  						"verification": &schema.Schema{
    66  							Type:     schema.TypeString,
    67  							Optional: true,
    68  							ForceNew: true,
    69  						},
    70  					},
    71  				},
    72  			},
    73  			"mode": &schema.Schema{
    74  				Type:     schema.TypeInt,
    75  				Optional: true,
    76  				ForceNew: true,
    77  			},
    78  			"uid": &schema.Schema{
    79  				Type:     schema.TypeInt,
    80  				Optional: true,
    81  				ForceNew: true,
    82  			},
    83  			"gid": &schema.Schema{
    84  				Type:     schema.TypeInt,
    85  				Optional: true,
    86  				ForceNew: true,
    87  			},
    88  		},
    89  	}
    90  }
    91  
    92  func resourceFileRead(d *schema.ResourceData, meta interface{}) error {
    93  	id, err := buildFile(d, globalCache)
    94  	if err != nil {
    95  		return err
    96  	}
    97  
    98  	d.SetId(id)
    99  	return nil
   100  }
   101  
   102  func resourceFileExists(d *schema.ResourceData, meta interface{}) (bool, error) {
   103  	id, err := buildFile(d, globalCache)
   104  	if err != nil {
   105  		return false, err
   106  	}
   107  
   108  	return id == d.Id(), nil
   109  }
   110  
   111  func buildFile(d *schema.ResourceData, c *cache) (string, error) {
   112  	_, hasContent := d.GetOk("content")
   113  	_, hasSource := d.GetOk("source")
   114  	if hasContent && hasSource {
   115  		return "", fmt.Errorf("content and source options are incompatible")
   116  	}
   117  
   118  	if !hasContent && !hasSource {
   119  		return "", fmt.Errorf("content or source options must be present")
   120  	}
   121  
   122  	var compression types.Compression
   123  	var source types.Url
   124  	var hash *types.Hash
   125  	var err error
   126  
   127  	if hasContent {
   128  		source, err = encodeDataURL(
   129  			d.Get("content.0.mime").(string),
   130  			d.Get("content.0.content").(string),
   131  		)
   132  
   133  		if err != nil {
   134  			return "", err
   135  		}
   136  	}
   137  
   138  	if hasSource {
   139  		source, err = buildURL(d.Get("source.0.source").(string))
   140  		if err != nil {
   141  			return "", err
   142  		}
   143  
   144  		compression = types.Compression(d.Get("source.0.compression").(string))
   145  		h, err := buildHash(d.Get("source.0.verification").(string))
   146  		if err != nil {
   147  			return "", err
   148  		}
   149  
   150  		hash = &h
   151  	}
   152  
   153  	return c.addFile(&types.File{
   154  		Filesystem: d.Get("filesystem").(string),
   155  		Path:       types.Path(d.Get("path").(string)),
   156  		Contents: types.FileContents{
   157  			Compression: compression,
   158  			Source:      source,
   159  			Verification: types.Verification{
   160  				Hash: hash,
   161  			},
   162  		},
   163  		User: types.FileUser{
   164  			Id: d.Get("uid").(int),
   165  		},
   166  		Group: types.FileGroup{
   167  			Id: d.Get("gid").(int),
   168  		},
   169  		Mode: types.FileMode(d.Get("mode").(int)),
   170  	}), nil
   171  }
   172  
   173  func encodeDataURL(mime, content string) (types.Url, error) {
   174  	base64 := base64.StdEncoding.EncodeToString([]byte(content))
   175  	return buildURL(
   176  		fmt.Sprintf("data:%s;charset=utf-8;base64,%s", mime, base64),
   177  	)
   178  }