385 lines
9.5 KiB
Go
385 lines
9.5 KiB
Go
package aws
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import (
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"crypto/sha1"
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"encoding/hex"
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"fmt"
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"log"
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"strings"
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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/hashicorp/terraform/terraform"
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"github.com/mitchellh/goamz/ec2"
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)
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func resourceAwsInstance() *schema.Resource {
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return &schema.Resource{
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Create: resourceAwsInstanceCreate,
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Read: resourceAwsInstanceRead,
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Update: resourceAwsInstanceUpdate,
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Delete: resourceAwsInstanceDelete,
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Schema: map[string]*schema.Schema{
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"ami": &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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"associate_public_ip_address": &schema.Schema{
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Type: schema.TypeBool,
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Optional: true,
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ForceNew: true,
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},
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"availability_zone": &schema.Schema{
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Type: schema.TypeString,
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Optional: true,
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Computed: true,
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ForceNew: true,
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},
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"instance_type": &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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"key_name": &schema.Schema{
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Type: schema.TypeString,
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Optional: true,
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ForceNew: true,
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Computed: true,
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},
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"subnet_id": &schema.Schema{
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Type: schema.TypeString,
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Optional: true,
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Computed: true,
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ForceNew: true,
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},
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"private_ip": &schema.Schema{
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Type: schema.TypeString,
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Optional: true,
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Computed: true,
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},
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"source_dest_check": &schema.Schema{
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Type: schema.TypeBool,
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Optional: true,
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},
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"user_data": &schema.Schema{
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Type: schema.TypeString,
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Optional: true,
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ForceNew: true,
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StateFunc: func(v interface{}) string {
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switch v.(type) {
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case string:
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hash := sha1.Sum([]byte(v.(string)))
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return hex.EncodeToString(hash[:])
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default:
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return ""
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}
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},
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},
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"security_groups": &schema.Schema{
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Type: schema.TypeSet,
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Optional: true,
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Computed: true,
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Elem: &schema.Schema{Type: schema.TypeString},
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Set: func(v interface{}) int {
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return hashcode.String(v.(string))
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},
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},
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"public_dns": &schema.Schema{
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Type: schema.TypeString,
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Computed: true,
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},
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"public_ip": &schema.Schema{
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Type: schema.TypeString,
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Computed: true,
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},
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"private_dns": &schema.Schema{
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Type: schema.TypeString,
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Computed: true,
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},
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"ebs_optimized": &schema.Schema{
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Type: schema.TypeBool,
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Optional: true,
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},
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},
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}
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}
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func resourceAwsInstanceCreate(d *schema.ResourceData, meta interface{}) error {
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p := meta.(*ResourceProvider)
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ec2conn := p.ec2conn
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// Figure out user data
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userData := ""
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if v := d.Get("user_data"); v != nil {
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userData = v.(string)
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}
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associatePublicIPAddress := false
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if v := d.Get("associate_public_ip_address"); v != nil {
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associatePublicIPAddress = v.(bool)
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}
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// Build the creation struct
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runOpts := &ec2.RunInstances{
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ImageId: d.Get("ami").(string),
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AvailZone: d.Get("availability_zone").(string),
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InstanceType: d.Get("instance_type").(string),
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KeyName: d.Get("key_name").(string),
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SubnetId: d.Get("subnet_id").(string),
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PrivateIPAddress: d.Get("private_ip").(string),
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AssociatePublicIpAddress: associatePublicIPAddress,
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UserData: []byte(userData),
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EbsOptimized: d.Get("ebs_optimized").(bool),
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}
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if v := d.Get("security_groups"); v != nil {
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for _, v := range v.(*schema.Set).List() {
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str := v.(string)
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var g ec2.SecurityGroup
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if runOpts.SubnetId != "" {
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g.Id = str
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} else {
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g.Name = str
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}
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runOpts.SecurityGroups = append(runOpts.SecurityGroups, g)
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}
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}
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// Create the instance
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log.Printf("[DEBUG] Run configuration: %#v", runOpts)
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runResp, err := ec2conn.RunInstances(runOpts)
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if err != nil {
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return fmt.Errorf("Error launching source instance: %s", err)
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}
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instance := &runResp.Instances[0]
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log.Printf("[INFO] Instance ID: %s", instance.InstanceId)
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// Store the resulting ID so we can look this up later
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d.SetId(instance.InstanceId)
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// Wait for the instance to become running so we can get some attributes
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// that aren't available until later.
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log.Printf(
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"[DEBUG] Waiting for instance (%s) to become running",
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instance.InstanceId)
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stateConf := &resource.StateChangeConf{
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Pending: []string{"pending"},
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Target: "running",
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Refresh: InstanceStateRefreshFunc(ec2conn, instance.InstanceId),
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Timeout: 10 * time.Minute,
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Delay: 10 * time.Second,
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MinTimeout: 3 * time.Second,
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}
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instanceRaw, err := stateConf.WaitForState()
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if err != nil {
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return fmt.Errorf(
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"Error waiting for instance (%s) to become ready: %s",
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instance.InstanceId, err)
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}
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instance = instanceRaw.(*ec2.Instance)
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// Initialize the connection info
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d.SetConnInfo(map[string]string{
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"type": "ssh",
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"host": instance.PublicIpAddress,
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})
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// Set our attributes
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if err := resourceAwsInstanceRead(d, meta); err != nil {
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return err
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}
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// Update if we need to
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return resourceAwsInstanceUpdate(d, meta)
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}
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func resourceAwsInstanceUpdate(d *schema.ResourceData, meta interface{}) error {
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p := meta.(*ResourceProvider)
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ec2conn := p.ec2conn
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modify := false
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opts := new(ec2.ModifyInstance)
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if v, ok := d.GetOk("source_dest_check"); ok {
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opts.SourceDestCheck = v.(bool)
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opts.SetSourceDestCheck = true
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modify = true
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}
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if modify {
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log.Printf("[INFO] Modifing instance %s: %#v", d.Id(), opts)
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if _, err := ec2conn.ModifyInstance(d.Id(), opts); err != nil {
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return err
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}
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// TODO(mitchellh): wait for the attributes we modified to
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// persist the change...
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}
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return nil
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}
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func resourceAwsInstanceDelete(d *schema.ResourceData, meta interface{}) error {
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p := meta.(*ResourceProvider)
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ec2conn := p.ec2conn
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log.Printf("[INFO] Terminating instance: %s", d.Id())
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if _, err := ec2conn.TerminateInstances([]string{d.Id()}); err != nil {
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return fmt.Errorf("Error terminating instance: %s", err)
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}
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log.Printf(
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"[DEBUG] Waiting for instance (%s) to become terminated",
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d.Id())
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stateConf := &resource.StateChangeConf{
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Pending: []string{"pending", "running", "shutting-down", "stopped", "stopping"},
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Target: "terminated",
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Refresh: InstanceStateRefreshFunc(ec2conn, d.Id()),
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Timeout: 10 * time.Minute,
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Delay: 10 * time.Second,
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MinTimeout: 3 * time.Second,
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}
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_, err := stateConf.WaitForState()
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if err != nil {
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return fmt.Errorf(
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"Error waiting for instance (%s) to terminate: %s",
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d.Id(), err)
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}
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d.SetId("")
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return nil
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}
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func resourceAwsInstanceRead(d *schema.ResourceData, meta interface{}) error {
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p := meta.(*ResourceProvider)
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ec2conn := p.ec2conn
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resp, err := ec2conn.Instances([]string{d.Id()}, ec2.NewFilter())
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if err != nil {
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// If the instance was not found, return nil so that we can show
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// that the instance is gone.
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if ec2err, ok := err.(*ec2.Error); ok && ec2err.Code == "InvalidInstanceID.NotFound" {
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d.SetId("")
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return nil
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}
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// Some other error, report it
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return err
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}
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// If nothing was found, then return no state
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if len(resp.Reservations) == 0 {
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d.SetId("")
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return nil
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}
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instance := &resp.Reservations[0].Instances[0]
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// If the instance is terminated, then it is gone
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if instance.State.Name == "terminated" {
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d.SetId("")
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return nil
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}
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d.Set("availability_zone", instance.AvailZone)
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d.Set("key_name", instance.KeyName)
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d.Set("public_dns", instance.DNSName)
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d.Set("public_ip", instance.PublicIpAddress)
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d.Set("private_dns", instance.PrivateDNSName)
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d.Set("private_ip", instance.PrivateIpAddress)
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d.Set("subnet_id", instance.SubnetId)
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d.Set("ebs_optimized", instance.EbsOptimized)
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var deps []terraform.ResourceDependency
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// Determine whether we're referring to security groups with
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// IDs or names. We use a heuristic to figure this out. By default,
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// we use IDs if we're in a VPC. However, if we previously had an
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// all-name list of security groups, we use names. Or, if we had any
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// IDs, we use IDs.
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useID := instance.SubnetId != ""
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if v := d.Get("security_groups"); v != nil {
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match := false
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for _, v := range v.(*schema.Set).List() {
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if strings.HasPrefix(v.(string), "sg-") {
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match = true
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break
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}
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}
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useID = match
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}
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// Build up the security groups
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sgs := make([]string, len(instance.SecurityGroups))
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for i, sg := range instance.SecurityGroups {
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if useID {
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sgs[i] = sg.Id
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} else {
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sgs[i] = sg.Name
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}
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deps = append(deps, terraform.ResourceDependency{ID: sg.Id})
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}
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d.Set("security_groups", sgs)
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// If we're in a VPC, we depend on the subnet
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if instance.SubnetId != "" {
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deps = append(deps, terraform.ResourceDependency{ID: instance.SubnetId})
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}
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d.SetDependencies(deps)
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return nil
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}
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// InstanceStateRefreshFunc returns a resource.StateRefreshFunc that is used to watch
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// an EC2 instance.
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func InstanceStateRefreshFunc(conn *ec2.EC2, instanceID string) resource.StateRefreshFunc {
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return func() (interface{}, string, error) {
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resp, err := conn.Instances([]string{instanceID}, ec2.NewFilter())
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if err != nil {
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if ec2err, ok := err.(*ec2.Error); ok && ec2err.Code == "InvalidInstanceID.NotFound" {
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// Set this to nil as if we didn't find anything.
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resp = nil
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} else {
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log.Printf("Error on InstanceStateRefresh: %s", err)
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return nil, "", err
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}
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}
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if resp == nil || len(resp.Reservations) == 0 || len(resp.Reservations[0].Instances) == 0 {
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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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i := &resp.Reservations[0].Instances[0]
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return i, i.State.Name, nil
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}
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}
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