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resource_flexibleengine_as_group_v1.go
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resource_flexibleengine_as_group_v1.go
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package flexibleengine
import (
"fmt"
"log"
"github.com/hashicorp/terraform/helper/resource"
"github.com/hashicorp/terraform/helper/schema"
"github.com/huaweicloud/golangsdk"
"github.com/huaweicloud/golangsdk/openstack/autoscaling/v1/groups"
"github.com/huaweicloud/golangsdk/openstack/autoscaling/v1/instances"
"regexp"
"strings"
"time"
)
func resourceASGroup() *schema.Resource {
return &schema.Resource{
Create: resourceASGroupCreate,
Read: resourceASGroupRead,
Update: resourceASGroupUpdate,
Delete: resourceASGroupDelete,
Timeouts: &schema.ResourceTimeout{
Create: schema.DefaultTimeout(10 * time.Minute),
Delete: schema.DefaultTimeout(10 * time.Minute),
},
Schema: map[string]*schema.Schema{
"region": {
Type: schema.TypeString,
Optional: true,
Computed: true,
ForceNew: true,
},
"scaling_group_name": {
Type: schema.TypeString,
Required: true,
ValidateFunc: resourceASGroupValidateGroupName,
ForceNew: false,
},
"scaling_configuration_id": {
Type: schema.TypeString,
Optional: true,
ForceNew: false,
Computed: true,
},
"desire_instance_number": {
Type: schema.TypeInt,
Optional: true,
ForceNew: false,
},
"min_instance_number": {
Type: schema.TypeInt,
Optional: true,
Default: 0,
ForceNew: false,
},
"max_instance_number": {
Type: schema.TypeInt,
Optional: true,
Default: 0,
ForceNew: false,
},
"cool_down_time": {
Type: schema.TypeInt,
Optional: true,
Default: 900,
ValidateFunc: resourceASGroupValidateCoolDownTime,
ForceNew: false,
Description: "The cooling duration, in seconds.",
},
"lb_listener_id": {
Type: schema.TypeString,
Optional: true,
ForceNew: false,
ValidateFunc: resourceASGroupValidateListenerId,
Description: "The system supports the binding of up to three ELB listeners, the IDs of which are separated using a comma.",
},
"available_zones": {
Type: schema.TypeList,
Optional: true,
Elem: &schema.Schema{Type: schema.TypeString},
ForceNew: false,
},
"networks": {
Type: schema.TypeList,
MaxItems: 5,
Required: true,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
"id": {
Type: schema.TypeString,
Required: true,
},
},
},
ForceNew: false,
},
"security_groups": {
Type: schema.TypeList,
Required: true,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
"id": {
Type: schema.TypeString,
Required: true,
},
},
},
ForceNew: false,
},
"vpc_id": {
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"health_periodic_audit_method": {
Type: schema.TypeString,
Optional: true,
ValidateFunc: resourceASGroupValidateHealthAuditMethod,
ForceNew: false,
Default: "NOVA_AUDIT",
},
"health_periodic_audit_time": {
Type: schema.TypeInt,
Optional: true,
Default: 5,
ValidateFunc: resourceASGroupValidateHealthAuditTime,
ForceNew: false,
Description: "The health check period for instances, in minutes.",
},
"instance_terminate_policy": {
Type: schema.TypeString,
Optional: true,
Default: "OLD_CONFIG_OLD_INSTANCE",
ValidateFunc: resourceASGroupValidateTerminatePolicy,
ForceNew: false,
},
"notifications": {
Type: schema.TypeList,
Optional: true,
Elem: &schema.Schema{Type: schema.TypeString},
ForceNew: false,
},
"delete_publicip": {
Type: schema.TypeBool,
Optional: true,
Default: false,
ForceNew: false,
},
"delete_instances": {
Description: "Whether to delete instances when they are removed from the AS group.",
Type: schema.TypeString,
Optional: true,
Default: "no",
ForceNew: false,
},
"instances": {
Type: schema.TypeList,
Optional: true,
Elem: &schema.Schema{Type: schema.TypeString},
ForceNew: false,
Description: "The instances id list in the as group.",
},
},
}
}
type Network struct {
ID string
}
type Group struct {
ID string
}
func expandNetworks(Networks []Network) []groups.NetworkOpts {
var networks []groups.NetworkOpts
for _, v := range Networks {
n := groups.NetworkOpts{
ID: v.ID,
}
networks = append(networks, n)
}
return networks
}
func expandGroups(Groups []Group) []groups.SecurityGroupOpts {
var asgroups []groups.SecurityGroupOpts
for _, v := range Groups {
n := groups.SecurityGroupOpts{
ID: v.ID,
}
asgroups = append(asgroups, n)
}
return asgroups
}
func getAllAvailableZones(d *schema.ResourceData) []string {
rawZones := d.Get("available_zones").([]interface{})
zones := make([]string, len(rawZones))
for i, raw := range rawZones {
zones[i] = raw.(string)
}
log.Printf("[DEBUG] getAvailableZones: %#v", zones)
return zones
}
func getAllNotifications(d *schema.ResourceData) []string {
rawNotifications := d.Get("notifications").([]interface{})
notifications := make([]string, len(rawNotifications))
for i, raw := range rawNotifications {
notifications[i] = raw.(string)
}
log.Printf("[DEBUG] getNotifications: %#v", notifications)
return notifications
}
func getAllNetworks(d *schema.ResourceData, meta interface{}) []Network {
var Networks []Network
networks := d.Get("networks").([]interface{})
for _, v := range networks {
network := v.(map[string]interface{})
networkID := network["id"].(string)
v := Network{
ID: networkID,
}
Networks = append(Networks, v)
}
log.Printf("[DEBUG] getNetworks: %#v", Networks)
return Networks
}
func getAllSecurityGroups(d *schema.ResourceData, meta interface{}) []Group {
var Groups []Group
asgroups := d.Get("security_groups").([]interface{})
for _, v := range asgroups {
group := v.(map[string]interface{})
groupID := group["id"].(string)
v := Group{
ID: groupID,
}
Groups = append(Groups, v)
}
log.Printf("[DEBUG] getGroups: %#v", Groups)
return Groups
}
func getInstancesInGroup(asClient *golangsdk.ServiceClient, groupID string, opts instances.ListOptsBuilder) ([]instances.Instance, error) {
var insList []instances.Instance
page, err := instances.List(asClient, groupID, opts).AllPages()
if err != nil {
return insList, fmt.Errorf("Error getting instances in ASGroup %q: %s", groupID, err)
}
insList, err = page.(instances.InstancePage).Extract()
return insList, err
}
func getInstancesIDs(allIns []instances.Instance) []string {
var allIDs []string
for _, ins := range allIns {
// Maybe the instance is pending, so we can't get the id,
// so unable to delete the instance this time, maybe next time to execute
// terraform destroy will works
if ins.ID != "" {
allIDs = append(allIDs, ins.ID)
}
}
log.Printf("[DEBUG] Get instances in ASGroups: %#v", allIDs)
return allIDs
}
func getInstancesLifeStates(allIns []instances.Instance) []string {
var allLifeStates []string
for _, ins := range allIns {
allLifeStates = append(allLifeStates, ins.LifeCycleStatus)
}
log.Printf("[DEBUG] Get instances lifecycle status in ASGroups: %#v", allLifeStates)
return allLifeStates
}
func refreshInstancesLifeStates(asClient *golangsdk.ServiceClient, groupID string, insNum int, checkInService bool) resource.StateRefreshFunc {
return func() (interface{}, string, error) {
var opts instances.ListOptsBuilder
allIns, err := getInstancesInGroup(asClient, groupID, opts)
if err != nil {
return nil, "ERROR", err
}
// maybe the instances (or some of the instances) have not put in the asg when creating
if checkInService && len(allIns) != insNum {
return allIns, "PENDING", err
}
allLifeStatus := getInstancesLifeStates(allIns)
for _, lifeStatus := range allLifeStatus {
log.Printf("[DEBUG] Get lifecycle status in group %s: %s", groupID, lifeStatus)
// check for creation
if checkInService {
if lifeStatus == "PENDING" || lifeStatus == "REMOVING" {
return allIns, lifeStatus, err
}
}
// check for removal
if !checkInService {
if lifeStatus == "REMOVING" || lifeStatus != "INSERVICE" {
return allIns, lifeStatus, err
}
}
}
if checkInService {
return allIns, "INSERVICE", err
}
log.Printf("[DEBUG] Exit refreshInstancesLifeStates for %q!", groupID)
return allIns, "", err
}
}
func checkASGroupInstancesInService(asClient *golangsdk.ServiceClient, groupID string, insNum int, timeout time.Duration) error {
stateConf := &resource.StateChangeConf{
Pending: []string{"PENDING"},
Target: []string{"INSERVICE"}, //if there is no lifecyclestatus, meaning no instances in asg
Refresh: refreshInstancesLifeStates(asClient, groupID, insNum, true),
Timeout: timeout,
Delay: 10 * time.Second,
}
_, err := stateConf.WaitForState()
return err
}
func checkASGroupInstancesRemoved(asClient *golangsdk.ServiceClient, groupID string, timeout time.Duration) error {
stateConf := &resource.StateChangeConf{
Pending: []string{"REMOVING"},
Target: []string{""}, //if there is no lifecyclestatus, meaning no instances in asg
Refresh: refreshInstancesLifeStates(asClient, groupID, 0, false),
Timeout: timeout,
Delay: 10 * time.Second,
}
_, err := stateConf.WaitForState()
return err
}
func resourceASGroupCreate(d *schema.ResourceData, meta interface{}) error {
config := meta.(*Config)
asClient, err := config.autoscalingV1Client(GetRegion(d, config))
if err != nil {
return fmt.Errorf("Error creating FlexibleEngine autoscaling client: %s", err)
}
log.Printf("[DEBUG] asClient: %#v", asClient)
minNum := d.Get("min_instance_number").(int)
maxNum := d.Get("max_instance_number").(int)
desireNum := d.Get("desire_instance_number").(int)
log.Printf("[DEBUG] Min instance number is: %#v", minNum)
log.Printf("[DEBUG] Max instance number is: %#v", maxNum)
log.Printf("[DEBUG] Desire instance number is: %#v", desireNum)
if desireNum < minNum || desireNum > maxNum {
return fmt.Errorf("Invalid parameters: it should be min_instance_number<=desire_instance_number<=max_instance_number")
}
var initNum int
if desireNum > 0 {
initNum = desireNum
} else {
initNum = minNum
}
log.Printf("[DEBUG] Init instance number is: %#v", initNum)
networks := getAllNetworks(d, meta)
asgNetworks := expandNetworks(networks)
secGroups := getAllSecurityGroups(d, meta)
asgSecGroups := expandGroups(secGroups)
log.Printf("[DEBUG] available_zones: %#v", d.Get("available_zones"))
createOpts := groups.CreateOpts{
Name: d.Get("scaling_group_name").(string),
ConfigurationID: d.Get("scaling_configuration_id").(string),
DesireInstanceNumber: desireNum,
MinInstanceNumber: minNum,
MaxInstanceNumber: maxNum,
CoolDownTime: d.Get("cool_down_time").(int),
LBListenerID: d.Get("lb_listener_id").(string),
AvailableZones: getAllAvailableZones(d),
Networks: asgNetworks,
SecurityGroup: asgSecGroups,
VpcID: d.Get("vpc_id").(string),
HealthPeriodicAuditMethod: d.Get("health_periodic_audit_method").(string),
HealthPeriodicAuditTime: d.Get("health_periodic_audit_time").(int),
InstanceTerminatePolicy: d.Get("instance_terminate_policy").(string),
Notifications: getAllNotifications(d),
IsDeletePublicip: d.Get("delete_publicip").(bool),
}
log.Printf("[DEBUG] Create Options: %#v", createOpts)
asgId, err := groups.Create(asClient, createOpts).Extract()
if err != nil {
return fmt.Errorf("Error creating ASGroup: %s", err)
}
d.SetId(asgId)
//enable asg
enableResult := groups.Enable(asClient, asgId)
if enableResult.Err != nil {
return fmt.Errorf("Error enabling ASGroup %q: %s", asgId, enableResult.Err)
}
log.Printf("[DEBUG] Enable ASGroup %q success!", asgId)
// check all instances are inservice
if initNum > 0 {
timeout := d.Timeout(schema.TimeoutCreate)
err = checkASGroupInstancesInService(asClient, asgId, initNum, timeout)
if err != nil {
return fmt.Errorf("Error waiting for instances in the ASGroup %q to become inservice!!: %s", asgId, err)
}
}
return resourceASGroupRead(d, meta)
}
func resourceASGroupRead(d *schema.ResourceData, meta interface{}) error {
config := meta.(*Config)
asClient, err := config.autoscalingV1Client(GetRegion(d, config))
if err != nil {
return fmt.Errorf("Error creating FlexibleEngine autoscaling client: %s", err)
}
asg, err := groups.Get(asClient, d.Id()).Extract()
if err != nil {
return CheckDeleted(d, err, "AS group")
}
log.Printf("[DEBUG] Retrieved ASGroup %q: %+v", d.Id(), asg)
log.Printf("[DEBUG] Retrieved ASGroup %q notifications: %+v", d.Id(), asg.Notifications)
log.Printf("[DEBUG] Retrieved ASGroup %q availablezones: %+v", d.Id(), asg.AvailableZones)
log.Printf("[DEBUG] Retrieved ASGroup %q networks: %+v", d.Id(), asg.Networks)
log.Printf("[DEBUG] Retrieved ASGroup %q secgroups: %+v", d.Id(), asg.SecurityGroups)
// set properties based on the read info
d.Set("scaling_group_name", asg.Name)
d.Set("desire_instance_number", asg.DesireInstanceNumber)
d.Set("min_instance_number", asg.MinInstanceNumber)
d.Set("max_instance_number", asg.MaxInstanceNumber)
d.Set("cool_down_time", asg.CoolDownTime)
d.Set("lb_listener_id", asg.LBListenerID)
d.Set("health_periodic_audit_method", asg.HealthPeriodicAuditMethod)
d.Set("health_periodic_audit_time", asg.HealthPeriodicAuditTime)
d.Set("instance_terminate_policy", asg.InstanceTerminatePolicy)
d.Set("scaling_configuration_id", asg.ConfigurationID)
d.Set("delete_publicip", asg.DeletePublicip)
if len(asg.Notifications) >= 1 {
d.Set("notifications", asg.Notifications)
}
var opts instances.ListOptsBuilder
allIns, err := getInstancesInGroup(asClient, d.Id(), opts)
if err != nil {
return fmt.Errorf("Can not get the instances in ASGroup %q!!: %s", d.Id(), err)
}
allIDs := getInstancesIDs(allIns)
d.Set("instances", allIDs)
d.Set("region", GetRegion(d, config))
return nil
}
func resourceASGroupUpdate(d *schema.ResourceData, meta interface{}) error {
config := meta.(*Config)
asClient, err := config.autoscalingV1Client(GetRegion(d, config))
if err != nil {
return fmt.Errorf("Error creating FlexibleEngine autoscaling client: %s", err)
}
d.Partial(true)
if d.HasChange("min_instance_number") || d.HasChange("max_instance_number") || d.HasChange("desire_instance_number") {
minNum := d.Get("min_instance_number").(int)
maxNum := d.Get("max_instance_number").(int)
desireNum := d.Get("desire_instance_number").(int)
log.Printf("[DEBUG] Min instance number is: %#v", minNum)
log.Printf("[DEBUG] Max instance number is: %#v", maxNum)
log.Printf("[DEBUG] Desire instance number is: %#v", desireNum)
if desireNum < minNum || desireNum > maxNum {
return fmt.Errorf("Invalid parameters: it should be min_instance_number<=desire_instance_number<=max_instance_number")
}
}
networks := getAllNetworks(d, meta)
asgNetworks := expandNetworks(networks)
secGroups := getAllSecurityGroups(d, meta)
asgSecGroups := expandGroups(secGroups)
updateOpts := groups.UpdateOpts{
Name: d.Get("scaling_group_name").(string),
ConfigurationID: d.Get("scaling_configuration_id").(string),
DesireInstanceNumber: d.Get("desire_instance_number").(int),
MinInstanceNumber: d.Get("min_instance_number").(int),
MaxInstanceNumber: d.Get("max_instance_number").(int),
CoolDownTime: d.Get("cool_down_time").(int),
LBListenerID: d.Get("lb_listener_id").(string),
AvailableZones: getAllAvailableZones(d),
Networks: asgNetworks,
SecurityGroup: asgSecGroups,
HealthPeriodicAuditMethod: d.Get("health_periodic_audit_method").(string),
HealthPeriodicAuditTime: d.Get("health_periodic_audit_time").(int),
InstanceTerminatePolicy: d.Get("instance_terminate_policy").(string),
Notifications: getAllNotifications(d),
IsDeletePublicip: d.Get("delete_publicip").(bool),
}
asgID, err := groups.Update(asClient, d.Id(), updateOpts).Extract()
if err != nil {
return fmt.Errorf("Error updating ASGroup %q: %s", asgID, err)
}
d.Partial(false)
return resourceASGroupRead(d, meta)
}
func resourceASGroupDelete(d *schema.ResourceData, meta interface{}) error {
config := meta.(*Config)
asClient, err := config.autoscalingV1Client(GetRegion(d, config))
if err != nil {
return fmt.Errorf("Error creating FlexibleEngine autoscaling client: %s", err)
}
log.Printf("[DEBUG] Begin to get instances of ASGroup %q", d.Id())
var listOpts instances.ListOptsBuilder
allIns, err := getInstancesInGroup(asClient, d.Id(), listOpts)
if err != nil {
return fmt.Errorf("Error listing instances of asg: %s", err)
}
allLifeStatus := getInstancesLifeStates(allIns)
for _, lifeCycleState := range allLifeStatus {
if lifeCycleState != "INSERVICE" {
return fmt.Errorf("[DEBUG] Can't delete the ASGroup %q: There are some instances not in INSERVICE but in %s, try again latter.", d.Id(), lifeCycleState)
}
}
allIDs := getInstancesIDs(allIns)
log.Printf("[DEBUG] InstanceIDs in ASGroup %q: %+v", d.Id(), allIDs)
log.Printf("[DEBUG] There are %d instances in ASGroup %q", len(allIDs), d.Id())
if len(allLifeStatus) > 0 {
min_number := d.Get("min_instance_number").(int)
if min_number > 0 {
return fmt.Errorf("[DEBUG] Can't delete the ASGroup %q: The instance number after the removal will less than the min number %d, modify the min number to zero first.", d.Id(), min_number)
}
delete_ins := d.Get("delete_instances").(string)
log.Printf("[DEBUG] The flag delete_instances in ASGroup is %s", delete_ins)
batchResult := instances.BatchDelete(asClient, d.Id(), allIDs, delete_ins)
if batchResult.Err != nil {
return fmt.Errorf("Error removing instancess of asg: %s", batchResult.Err)
}
log.Printf("[DEBUG] Begin to remove instances of ASGroup %q", d.Id())
timeout := d.Timeout(schema.TimeoutDelete)
err = checkASGroupInstancesRemoved(asClient, d.Id(), timeout)
if err != nil {
return fmt.Errorf(
"[DEBUG] Error removing instances from ASGroup %q: %s", d.Id(), err)
}
}
log.Printf("[DEBUG] Begin to delete ASGroup %q", d.Id())
if delErr := groups.Delete(asClient, d.Id()).ExtractErr(); delErr != nil {
return fmt.Errorf("Error deleting ASGroup: %s", delErr)
}
return nil
}
var TerminatePolices = [4]string{"OLD_CONFIG_OLD_INSTANCE", "OLD_CONFIG_NEW_INSTANCE", "OLD_INSTANCE", "NEW_INSTANCE"}
func resourceASGroupValidateTerminatePolicy(v interface{}, k string) (ws []string, errors []error) {
value := v.(string)
for i := range TerminatePolices {
if value == TerminatePolices[i] {
return
}
}
errors = append(errors, fmt.Errorf("%q must be one of %v", k, TerminatePolices))
return
}
func resourceASGroupValidateCoolDownTime(v interface{}, k string) (ws []string, errors []error) {
value := v.(int)
if 0 <= value && value <= 86400 {
return
}
errors = append(errors, fmt.Errorf("%q must be [0, 86400]", k))
return
}
func resourceASGroupValidateListenerId(v interface{}, k string) (ws []string, errors []error) {
value := v.(string)
split := strings.Split(value, ",")
if len(split) <= 3 {
return
}
errors = append(errors, fmt.Errorf("%q supports binding up to 3 ELB listeners which are separated by a comma.", k))
return
}
var HealthAuditMethods = [2]string{"ELB_AUDIT", "NOVA_AUDIT"}
func resourceASGroupValidateHealthAuditMethod(v interface{}, k string) (ws []string, errors []error) {
value := v.(string)
for i := range HealthAuditMethods {
if value == HealthAuditMethods[i] {
return
}
}
errors = append(errors, fmt.Errorf("%q must be one of %v", k, HealthAuditMethods))
return
}
var HealthAuditTime = [4]int{5, 15, 60, 180}
func resourceASGroupValidateHealthAuditTime(v interface{}, k string) (ws []string, errors []error) {
value := v.(int)
for i := range HealthAuditTime {
if value == HealthAuditTime[i] {
return
}
}
errors = append(errors, fmt.Errorf("%q must be one of %v", k, HealthAuditTime))
return
}
func resourceASGroupValidateGroupName(v interface{}, k string) (ws []string, errors []error) {
value := v.(string)
if len(value) > 64 || len(value) < 1 {
errors = append(errors, fmt.Errorf("%q must contain more than 1 and less than 64 characters", k))
}
if !regexp.MustCompile(`^[0-9a-zA-Z-_]+$`).MatchString(value) {
errors = append(errors, fmt.Errorf("only alphanumeric characters, hyphens, and underscores allowed in %q", k))
}
return
}