github.com/minamijoyo/terraform@v0.7.8-0.20161029001309-18b3736ba44b/builtin/providers/aws/resource_aws_efs_mount_target.go (about)

     1  package aws
     2  
     3  import (
     4  	"fmt"
     5  	"log"
     6  	"time"
     7  
     8  	"github.com/aws/aws-sdk-go/aws"
     9  	"github.com/aws/aws-sdk-go/aws/awserr"
    10  	"github.com/aws/aws-sdk-go/service/ec2"
    11  	"github.com/aws/aws-sdk-go/service/efs"
    12  	"github.com/hashicorp/terraform/helper/resource"
    13  	"github.com/hashicorp/terraform/helper/schema"
    14  )
    15  
    16  func resourceAwsEfsMountTarget() *schema.Resource {
    17  	return &schema.Resource{
    18  		Create: resourceAwsEfsMountTargetCreate,
    19  		Read:   resourceAwsEfsMountTargetRead,
    20  		Update: resourceAwsEfsMountTargetUpdate,
    21  		Delete: resourceAwsEfsMountTargetDelete,
    22  
    23  		Importer: &schema.ResourceImporter{
    24  			State: schema.ImportStatePassthrough,
    25  		},
    26  
    27  		Schema: map[string]*schema.Schema{
    28  			"file_system_id": &schema.Schema{
    29  				Type:     schema.TypeString,
    30  				Required: true,
    31  				ForceNew: true,
    32  			},
    33  
    34  			"ip_address": &schema.Schema{
    35  				Type:     schema.TypeString,
    36  				Computed: true,
    37  				Optional: true,
    38  				ForceNew: true,
    39  			},
    40  
    41  			"security_groups": &schema.Schema{
    42  				Type:     schema.TypeSet,
    43  				Elem:     &schema.Schema{Type: schema.TypeString},
    44  				Set:      schema.HashString,
    45  				Computed: true,
    46  				Optional: true,
    47  			},
    48  
    49  			"subnet_id": &schema.Schema{
    50  				Type:     schema.TypeString,
    51  				Required: true,
    52  				ForceNew: true,
    53  			},
    54  
    55  			"network_interface_id": &schema.Schema{
    56  				Type:     schema.TypeString,
    57  				Computed: true,
    58  			},
    59  			"dns_name": &schema.Schema{
    60  				Type:     schema.TypeString,
    61  				Computed: true,
    62  			},
    63  		},
    64  	}
    65  }
    66  
    67  func resourceAwsEfsMountTargetCreate(d *schema.ResourceData, meta interface{}) error {
    68  	conn := meta.(*AWSClient).efsconn
    69  
    70  	fsId := d.Get("file_system_id").(string)
    71  	subnetId := d.Get("subnet_id").(string)
    72  
    73  	// CreateMountTarget would return the same Mount Target ID
    74  	// to parallel requests if they both include the same AZ
    75  	// and we would end up managing the same MT as 2 resources.
    76  	// So we make it fail by calling 1 request per AZ at a time.
    77  	az, err := getAzFromSubnetId(subnetId, meta.(*AWSClient).ec2conn)
    78  	if err != nil {
    79  		return fmt.Errorf("Failed getting Availability Zone from subnet ID (%s): %s", subnetId, err)
    80  	}
    81  	mtKey := "efs-mt-" + fsId + "-" + az
    82  	awsMutexKV.Lock(mtKey)
    83  	defer awsMutexKV.Unlock(mtKey)
    84  
    85  	input := efs.CreateMountTargetInput{
    86  		FileSystemId: aws.String(fsId),
    87  		SubnetId:     aws.String(subnetId),
    88  	}
    89  
    90  	if v, ok := d.GetOk("ip_address"); ok {
    91  		input.IpAddress = aws.String(v.(string))
    92  	}
    93  	if v, ok := d.GetOk("security_groups"); ok {
    94  		input.SecurityGroups = expandStringList(v.(*schema.Set).List())
    95  	}
    96  
    97  	log.Printf("[DEBUG] Creating EFS mount target: %#v", input)
    98  
    99  	mt, err := conn.CreateMountTarget(&input)
   100  	if err != nil {
   101  		return err
   102  	}
   103  
   104  	d.SetId(*mt.MountTargetId)
   105  	log.Printf("[INFO] EFS mount target ID: %s", d.Id())
   106  
   107  	stateConf := &resource.StateChangeConf{
   108  		Pending: []string{"creating"},
   109  		Target:  []string{"available"},
   110  		Refresh: func() (interface{}, string, error) {
   111  			resp, err := conn.DescribeMountTargets(&efs.DescribeMountTargetsInput{
   112  				MountTargetId: aws.String(d.Id()),
   113  			})
   114  			if err != nil {
   115  				return nil, "error", err
   116  			}
   117  
   118  			if hasEmptyMountTargets(resp) {
   119  				return nil, "error", fmt.Errorf("EFS mount target %q could not be found.", d.Id())
   120  			}
   121  
   122  			mt := resp.MountTargets[0]
   123  
   124  			log.Printf("[DEBUG] Current status of %q: %q", *mt.MountTargetId, *mt.LifeCycleState)
   125  			return mt, *mt.LifeCycleState, nil
   126  		},
   127  		Timeout:    10 * time.Minute,
   128  		Delay:      2 * time.Second,
   129  		MinTimeout: 3 * time.Second,
   130  	}
   131  
   132  	_, err = stateConf.WaitForState()
   133  	if err != nil {
   134  		return fmt.Errorf("Error waiting for EFS mount target (%s) to create: %s", d.Id(), err)
   135  	}
   136  
   137  	log.Printf("[DEBUG] EFS mount target created: %s", *mt.MountTargetId)
   138  
   139  	return resourceAwsEfsMountTargetRead(d, meta)
   140  }
   141  
   142  func resourceAwsEfsMountTargetUpdate(d *schema.ResourceData, meta interface{}) error {
   143  	conn := meta.(*AWSClient).efsconn
   144  
   145  	if d.HasChange("security_groups") {
   146  		input := efs.ModifyMountTargetSecurityGroupsInput{
   147  			MountTargetId:  aws.String(d.Id()),
   148  			SecurityGroups: expandStringList(d.Get("security_groups").(*schema.Set).List()),
   149  		}
   150  		_, err := conn.ModifyMountTargetSecurityGroups(&input)
   151  		if err != nil {
   152  			return err
   153  		}
   154  	}
   155  
   156  	return resourceAwsEfsMountTargetRead(d, meta)
   157  }
   158  
   159  func resourceAwsEfsMountTargetRead(d *schema.ResourceData, meta interface{}) error {
   160  	conn := meta.(*AWSClient).efsconn
   161  	resp, err := conn.DescribeMountTargets(&efs.DescribeMountTargetsInput{
   162  		MountTargetId: aws.String(d.Id()),
   163  	})
   164  	if err != nil {
   165  		if ec2err, ok := err.(awserr.Error); ok && ec2err.Code() == "MountTargetNotFound" {
   166  			// The EFS mount target could not be found,
   167  			// which would indicate that it might be
   168  			// already deleted.
   169  			log.Printf("[WARN] EFS mount target %q could not be found.", d.Id())
   170  			d.SetId("")
   171  			return nil
   172  		}
   173  		return fmt.Errorf("Error reading EFS mount target %s: %s", d.Id(), err)
   174  	}
   175  
   176  	if hasEmptyMountTargets(resp) {
   177  		return fmt.Errorf("EFS mount target %q could not be found.", d.Id())
   178  	}
   179  
   180  	mt := resp.MountTargets[0]
   181  
   182  	log.Printf("[DEBUG] Found EFS mount target: %#v", mt)
   183  
   184  	d.SetId(*mt.MountTargetId)
   185  	d.Set("file_system_id", mt.FileSystemId)
   186  	d.Set("ip_address", mt.IpAddress)
   187  	d.Set("subnet_id", mt.SubnetId)
   188  	d.Set("network_interface_id", mt.NetworkInterfaceId)
   189  
   190  	sgResp, err := conn.DescribeMountTargetSecurityGroups(&efs.DescribeMountTargetSecurityGroupsInput{
   191  		MountTargetId: aws.String(d.Id()),
   192  	})
   193  	if err != nil {
   194  		return err
   195  	}
   196  
   197  	err = d.Set("security_groups", schema.NewSet(schema.HashString, flattenStringList(sgResp.SecurityGroups)))
   198  	if err != nil {
   199  		return err
   200  	}
   201  
   202  	// DNS name per http://docs.aws.amazon.com/efs/latest/ug/mounting-fs-mount-cmd-dns-name.html
   203  	az, err := getAzFromSubnetId(*mt.SubnetId, meta.(*AWSClient).ec2conn)
   204  	if err != nil {
   205  		return fmt.Errorf("Failed getting Availability Zone from subnet ID (%s): %s", *mt.SubnetId, err)
   206  	}
   207  
   208  	region := meta.(*AWSClient).region
   209  	err = d.Set("dns_name", resourceAwsEfsMountTargetDnsName(az, *mt.FileSystemId, region))
   210  	if err != nil {
   211  		return err
   212  	}
   213  
   214  	return nil
   215  }
   216  
   217  func getAzFromSubnetId(subnetId string, conn *ec2.EC2) (string, error) {
   218  	input := ec2.DescribeSubnetsInput{
   219  		SubnetIds: []*string{aws.String(subnetId)},
   220  	}
   221  	out, err := conn.DescribeSubnets(&input)
   222  	if err != nil {
   223  		return "", err
   224  	}
   225  
   226  	if l := len(out.Subnets); l != 1 {
   227  		return "", fmt.Errorf("Expected exactly 1 subnet returned for %q, got: %d", subnetId, l)
   228  	}
   229  
   230  	return *out.Subnets[0].AvailabilityZone, nil
   231  }
   232  
   233  func resourceAwsEfsMountTargetDelete(d *schema.ResourceData, meta interface{}) error {
   234  	conn := meta.(*AWSClient).efsconn
   235  
   236  	log.Printf("[DEBUG] Deleting EFS mount target %q", d.Id())
   237  	_, err := conn.DeleteMountTarget(&efs.DeleteMountTargetInput{
   238  		MountTargetId: aws.String(d.Id()),
   239  	})
   240  	if err != nil {
   241  		return err
   242  	}
   243  
   244  	stateConf := &resource.StateChangeConf{
   245  		Pending: []string{"available", "deleting", "deleted"},
   246  		Target:  []string{},
   247  		Refresh: func() (interface{}, string, error) {
   248  			resp, err := conn.DescribeMountTargets(&efs.DescribeMountTargetsInput{
   249  				MountTargetId: aws.String(d.Id()),
   250  			})
   251  			if err != nil {
   252  				awsErr, ok := err.(awserr.Error)
   253  				if !ok {
   254  					return nil, "error", err
   255  				}
   256  
   257  				if awsErr.Code() == "MountTargetNotFound" {
   258  					return nil, "", nil
   259  				}
   260  
   261  				return nil, "error", awsErr
   262  			}
   263  
   264  			if hasEmptyMountTargets(resp) {
   265  				return nil, "", nil
   266  			}
   267  
   268  			mt := resp.MountTargets[0]
   269  
   270  			log.Printf("[DEBUG] Current status of %q: %q", *mt.MountTargetId, *mt.LifeCycleState)
   271  			return mt, *mt.LifeCycleState, nil
   272  		},
   273  		Timeout:    10 * time.Minute,
   274  		Delay:      2 * time.Second,
   275  		MinTimeout: 3 * time.Second,
   276  	}
   277  
   278  	_, err = stateConf.WaitForState()
   279  	if err != nil {
   280  		return fmt.Errorf("Error waiting for EFS mount target (%q) to delete: %s",
   281  			d.Id(), err.Error())
   282  	}
   283  
   284  	log.Printf("[DEBUG] EFS mount target %q deleted.", d.Id())
   285  
   286  	return nil
   287  }
   288  
   289  func resourceAwsEfsMountTargetDnsName(az, fileSystemId, region string) string {
   290  	return fmt.Sprintf("%s.%s.efs.%s.amazonaws.com", az, fileSystemId, region)
   291  }
   292  
   293  func hasEmptyMountTargets(mto *efs.DescribeMountTargetsOutput) bool {
   294  	if mto != nil && len(mto.MountTargets) > 0 {
   295  		return false
   296  	}
   297  	return true
   298  }