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

     1  package aws
     2  
     3  import (
     4  	"fmt"
     5  	"log"
     6  	"strings"
     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  
    12  	"github.com/hashicorp/terraform/helper/schema"
    13  )
    14  
    15  func resourceAwsVpnConnectionRoute() *schema.Resource {
    16  	return &schema.Resource{
    17  		// You can't update a route. You can just delete one and make
    18  		// a new one.
    19  		Create: resourceAwsVpnConnectionRouteCreate,
    20  		Read:   resourceAwsVpnConnectionRouteRead,
    21  		Delete: resourceAwsVpnConnectionRouteDelete,
    22  
    23  		Schema: map[string]*schema.Schema{
    24  			"destination_cidr_block": &schema.Schema{
    25  				Type:     schema.TypeString,
    26  				Required: true,
    27  				ForceNew: true,
    28  			},
    29  
    30  			"vpn_connection_id": &schema.Schema{
    31  				Type:     schema.TypeString,
    32  				Required: true,
    33  				ForceNew: true,
    34  			},
    35  		},
    36  	}
    37  }
    38  
    39  func resourceAwsVpnConnectionRouteCreate(d *schema.ResourceData, meta interface{}) error {
    40  	conn := meta.(*AWSClient).ec2conn
    41  
    42  	createOpts := &ec2.CreateVpnConnectionRouteInput{
    43  		DestinationCidrBlock: aws.String(d.Get("destination_cidr_block").(string)),
    44  		VpnConnectionId:      aws.String(d.Get("vpn_connection_id").(string)),
    45  	}
    46  
    47  	// Create the route.
    48  	log.Printf("[DEBUG] Creating VPN connection route")
    49  	_, err := conn.CreateVpnConnectionRoute(createOpts)
    50  	if err != nil {
    51  		return fmt.Errorf("Error creating VPN connection route: %s", err)
    52  	}
    53  
    54  	// Store the ID by the only two data we have available to us.
    55  	d.SetId(fmt.Sprintf("%s:%s", *createOpts.DestinationCidrBlock, *createOpts.VpnConnectionId))
    56  
    57  	return resourceAwsVpnConnectionRouteRead(d, meta)
    58  }
    59  
    60  func resourceAwsVpnConnectionRouteRead(d *schema.ResourceData, meta interface{}) error {
    61  	conn := meta.(*AWSClient).ec2conn
    62  
    63  	cidrBlock, vpnConnectionId := resourceAwsVpnConnectionRouteParseId(d.Id())
    64  
    65  	routeFilters := []*ec2.Filter{
    66  		&ec2.Filter{
    67  			Name:   aws.String("route.destination-cidr-block"),
    68  			Values: []*string{aws.String(cidrBlock)},
    69  		},
    70  		&ec2.Filter{
    71  			Name:   aws.String("vpn-connection-id"),
    72  			Values: []*string{aws.String(vpnConnectionId)},
    73  		},
    74  	}
    75  
    76  	// Technically, we know everything there is to know about the route
    77  	// from its ID, but we still want to catch cases where it changes
    78  	// outside of terraform and results in a stale state file. Hence,
    79  	// conduct a read.
    80  	resp, err := conn.DescribeVpnConnections(&ec2.DescribeVpnConnectionsInput{
    81  		Filters: routeFilters,
    82  	})
    83  	if err != nil {
    84  		if ec2err, ok := err.(awserr.Error); ok && ec2err.Code() == "InvalidVpnConnectionID.NotFound" {
    85  			d.SetId("")
    86  			return nil
    87  		} else {
    88  			log.Printf("[ERROR] Error finding VPN connection route: %s", err)
    89  			return err
    90  		}
    91  	}
    92  	if resp == nil || len(resp.VpnConnections) == 0 {
    93  		// This is kind of a weird edge case. I'd rather return an error
    94  		// instead of just blindly setting the ID to ""... since I don't know
    95  		// what might cause this.
    96  		return fmt.Errorf("No VPN connections returned")
    97  	}
    98  
    99  	vpnConnection := resp.VpnConnections[0]
   100  
   101  	var found bool
   102  	for _, r := range vpnConnection.Routes {
   103  		if *r.DestinationCidrBlock == cidrBlock {
   104  			d.Set("destination_cidr_block", *r.DestinationCidrBlock)
   105  			d.Set("vpn_connection_id", *vpnConnection.VpnConnectionId)
   106  			found = true
   107  		}
   108  	}
   109  	if !found {
   110  		// Something other than terraform eliminated the route.
   111  		d.SetId("")
   112  	}
   113  
   114  	return nil
   115  }
   116  
   117  func resourceAwsVpnConnectionRouteDelete(d *schema.ResourceData, meta interface{}) error {
   118  	conn := meta.(*AWSClient).ec2conn
   119  
   120  	_, err := conn.DeleteVpnConnectionRoute(&ec2.DeleteVpnConnectionRouteInput{
   121  		DestinationCidrBlock: aws.String(d.Get("destination_cidr_block").(string)),
   122  		VpnConnectionId:      aws.String(d.Get("vpn_connection_id").(string)),
   123  	})
   124  	if err != nil {
   125  		if ec2err, ok := err.(awserr.Error); ok && ec2err.Code() == "InvalidVpnConnectionID.NotFound" {
   126  			d.SetId("")
   127  			return nil
   128  		} else {
   129  			log.Printf("[ERROR] Error deleting VPN connection route: %s", err)
   130  			return err
   131  		}
   132  	}
   133  
   134  	return nil
   135  }
   136  
   137  func resourceAwsVpnConnectionRouteParseId(id string) (string, string) {
   138  	parts := strings.SplitN(id, ":", 2)
   139  	return parts[0], parts[1]
   140  }