302 lines
7.5 KiB
Go
302 lines
7.5 KiB
Go
package aws
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import (
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"bytes"
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"fmt"
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"log"
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"time"
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"github.com/hashicorp/terraform/helper/hashcode"
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"github.com/hashicorp/terraform/helper/resource"
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"github.com/hashicorp/terraform/helper/schema"
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"github.com/mitchellh/goamz/ec2"
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)
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func resourceAwsRouteTable() *schema.Resource {
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return &schema.Resource{
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Create: resourceAwsRouteTableCreate,
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Read: resourceAwsRouteTableRead,
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Update: resourceAwsRouteTableUpdate,
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Delete: resourceAwsRouteTableDelete,
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Schema: map[string]*schema.Schema{
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"vpc_id": &schema.Schema{
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Type: schema.TypeString,
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Required: true,
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ForceNew: true,
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},
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"tags": tagsSchema(),
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"route": &schema.Schema{
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Type: schema.TypeSet,
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Optional: true,
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Elem: &schema.Resource{
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Schema: map[string]*schema.Schema{
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"cidr_block": &schema.Schema{
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Type: schema.TypeString,
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Required: true,
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},
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"gateway_id": &schema.Schema{
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Type: schema.TypeString,
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Optional: true,
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},
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"instance_id": &schema.Schema{
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Type: schema.TypeString,
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Optional: true,
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},
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"vpc_peering_connection_id": &schema.Schema{
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Type: schema.TypeString,
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Optional: true,
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},
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},
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},
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Set: resourceAwsRouteTableHash,
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},
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},
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}
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}
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func resourceAwsRouteTableCreate(d *schema.ResourceData, meta interface{}) error {
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ec2conn := meta.(*AWSClient).ec2conn
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// Create the routing table
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createOpts := &ec2.CreateRouteTable{
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VpcId: d.Get("vpc_id").(string),
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}
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log.Printf("[DEBUG] RouteTable create config: %#v", createOpts)
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resp, err := ec2conn.CreateRouteTable(createOpts)
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if err != nil {
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return fmt.Errorf("Error creating route table: %s", err)
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}
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// Get the ID and store it
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rt := &resp.RouteTable
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d.SetId(rt.RouteTableId)
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log.Printf("[INFO] Route Table ID: %s", d.Id())
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// Wait for the route table to become available
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log.Printf(
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"[DEBUG] Waiting for route table (%s) to become available",
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d.Id())
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stateConf := &resource.StateChangeConf{
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Pending: []string{"pending"},
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Target: "ready",
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Refresh: resourceAwsRouteTableStateRefreshFunc(ec2conn, d.Id()),
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Timeout: 1 * time.Minute,
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}
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if _, err := stateConf.WaitForState(); err != nil {
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return fmt.Errorf(
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"Error waiting for route table (%s) to become available: %s",
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d.Id(), err)
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}
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return resourceAwsRouteTableUpdate(d, meta)
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}
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func resourceAwsRouteTableRead(d *schema.ResourceData, meta interface{}) error {
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ec2conn := meta.(*AWSClient).ec2conn
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rtRaw, _, err := resourceAwsRouteTableStateRefreshFunc(ec2conn, d.Id())()
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if err != nil {
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return err
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}
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if rtRaw == nil {
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return nil
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}
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rt := rtRaw.(*ec2.RouteTable)
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d.Set("vpc_id", rt.VpcId)
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// Create an empty schema.Set to hold all routes
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route := &schema.Set{F: resourceAwsRouteTableHash}
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// Loop through the routes and add them to the set
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for _, r := range rt.Routes {
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if r.GatewayId == "local" {
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continue
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}
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if r.Origin == "EnableVgwRoutePropagation" {
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continue
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}
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m := make(map[string]interface{})
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m["cidr_block"] = r.DestinationCidrBlock
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m["gateway_id"] = r.GatewayId
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m["instance_id"] = r.InstanceId
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m["vpc_peering_connection_id"] = r.VpcPeeringConnectionId
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route.Add(m)
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}
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d.Set("route", route)
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// Tags
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d.Set("tags", tagsToMap(rt.Tags))
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return nil
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}
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func resourceAwsRouteTableUpdate(d *schema.ResourceData, meta interface{}) error {
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ec2conn := meta.(*AWSClient).ec2conn
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// Check if the route set as a whole has changed
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if d.HasChange("route") {
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o, n := d.GetChange("route")
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ors := o.(*schema.Set).Difference(n.(*schema.Set))
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nrs := n.(*schema.Set).Difference(o.(*schema.Set))
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// Now first loop through all the old routes and delete any obsolete ones
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for _, route := range ors.List() {
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m := route.(map[string]interface{})
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// Delete the route as it no longer exists in the config
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log.Printf(
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"[INFO] Deleting route from %s: %s",
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d.Id(), m["cidr_block"].(string))
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_, err := ec2conn.DeleteRoute(
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d.Id(), m["cidr_block"].(string))
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if err != nil {
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return err
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}
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}
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// Make sure we save the state of the currently configured rules
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routes := o.(*schema.Set).Intersection(n.(*schema.Set))
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d.Set("route", routes)
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// Then loop through al the newly configured routes and create them
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for _, route := range nrs.List() {
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m := route.(map[string]interface{})
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opts := ec2.CreateRoute{
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RouteTableId: d.Id(),
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DestinationCidrBlock: m["cidr_block"].(string),
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GatewayId: m["gateway_id"].(string),
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InstanceId: m["instance_id"].(string),
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VpcPeeringConnectionId: m["vpc_peering_connection_id"].(string),
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}
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log.Printf("[INFO] Creating route for %s: %#v", d.Id(), opts)
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_, err := ec2conn.CreateRoute(&opts)
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if err != nil {
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return err
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}
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routes.Add(route)
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d.Set("route", routes)
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}
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}
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if err := setTags(ec2conn, d); err != nil {
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return err
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} else {
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d.SetPartial("tags")
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}
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return resourceAwsRouteTableRead(d, meta)
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}
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func resourceAwsRouteTableDelete(d *schema.ResourceData, meta interface{}) error {
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ec2conn := meta.(*AWSClient).ec2conn
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// First request the routing table since we'll have to disassociate
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// all the subnets first.
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rtRaw, _, err := resourceAwsRouteTableStateRefreshFunc(ec2conn, d.Id())()
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if err != nil {
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return err
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}
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if rtRaw == nil {
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return nil
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}
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rt := rtRaw.(*ec2.RouteTable)
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// Do all the disassociations
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for _, a := range rt.Associations {
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log.Printf("[INFO] Disassociating association: %s", a.AssociationId)
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if _, err := ec2conn.DisassociateRouteTable(a.AssociationId); err != nil {
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return err
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}
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}
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// Delete the route table
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log.Printf("[INFO] Deleting Route Table: %s", d.Id())
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if _, err := ec2conn.DeleteRouteTable(d.Id()); err != nil {
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ec2err, ok := err.(*ec2.Error)
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if ok && ec2err.Code == "InvalidRouteTableID.NotFound" {
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return nil
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}
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return fmt.Errorf("Error deleting route table: %s", err)
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}
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// Wait for the route table to really destroy
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log.Printf(
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"[DEBUG] Waiting for route table (%s) to become destroyed",
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d.Id())
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stateConf := &resource.StateChangeConf{
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Pending: []string{"ready"},
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Target: "",
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Refresh: resourceAwsRouteTableStateRefreshFunc(ec2conn, d.Id()),
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Timeout: 1 * time.Minute,
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}
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if _, err := stateConf.WaitForState(); err != nil {
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return fmt.Errorf(
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"Error waiting for route table (%s) to become destroyed: %s",
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d.Id(), err)
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}
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return nil
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}
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func resourceAwsRouteTableHash(v interface{}) int {
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var buf bytes.Buffer
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m := v.(map[string]interface{})
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buf.WriteString(fmt.Sprintf("%s-", m["cidr_block"].(string)))
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if v, ok := m["gateway_id"]; ok {
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buf.WriteString(fmt.Sprintf("%s-", v.(string)))
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}
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if v, ok := m["instance_id"]; ok {
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buf.WriteString(fmt.Sprintf("%s-", v.(string)))
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}
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if v, ok := m["vpc_peering_connection_id"]; ok {
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buf.WriteString(fmt.Sprintf("%s-", v.(string)))
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}
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return hashcode.String(buf.String())
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}
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// resourceAwsRouteTableStateRefreshFunc returns a resource.StateRefreshFunc that is used to watch
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// a RouteTable.
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func resourceAwsRouteTableStateRefreshFunc(conn *ec2.EC2, id string) resource.StateRefreshFunc {
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return func() (interface{}, string, error) {
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resp, err := conn.DescribeRouteTables([]string{id}, ec2.NewFilter())
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if err != nil {
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if ec2err, ok := err.(*ec2.Error); ok && ec2err.Code == "InvalidRouteTableID.NotFound" {
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resp = nil
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} else {
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log.Printf("Error on RouteTableStateRefresh: %s", err)
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return nil, "", err
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}
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}
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if resp == nil {
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// Sometimes AWS just has consistency issues and doesn't see
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// our instance yet. Return an empty state.
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return nil, "", nil
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}
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rt := &resp.RouteTables[0]
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return rt, "ready", nil
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}
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}
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