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resource_exoscale_nlb_service.go
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resource_exoscale_nlb_service.go
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package exoscale
import (
"context"
"errors"
"fmt"
"strings"
"time"
"github.com/hashicorp/terraform-plugin-log/tflog"
"github.com/hashicorp/terraform-plugin-sdk/v2/diag"
"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
egoscale "github.com/exoscale/egoscale/v2"
exoapi "github.com/exoscale/egoscale/v2/api"
"github.com/exoscale/terraform-provider-exoscale/pkg/config"
"github.com/exoscale/terraform-provider-exoscale/pkg/general"
)
const (
defaultNLBServiceHealthcheckInterval = 10
defaultNLBServiceHealthcheckMode = "tcp"
defaultNLBServiceHealthcheckRetries = 1
defaultNLBServiceHealthcheckTimeout = 5
defaultNLBServiceProtocol = "tcp"
defaulNLBServiceStrategy = "round-robin"
resNLBServiceAttrDescription = "description"
resNLBServiceAttrHealthcheck = "healthcheck"
resNLBServiceAttrHealthcheckInterval = "interval"
resNLBServiceAttrHealthcheckMode = "mode"
resNLBServiceAttrHealthcheckPort = "port"
resNLBServiceAttrHealthcheckRetries = "retries"
resNLBServiceAttrHealthcheckTimeout = "timeout"
resNLBServiceAttrHealthcheckTLSSNI = "tls_sni"
resNLBServiceAttrHealthcheckURI = "uri"
resNLBServiceAttrInstancePoolID = "instance_pool_id"
resNLBServiceAttrName = "name"
resNLBServiceAttrNLBID = "nlb_id"
resNLBServiceAttrPort = "port"
resNLBServiceAttrProtocol = "protocol"
resNLBServiceAttrStrategy = "strategy"
resNLBServiceAttrState = "state"
resNLBServiceAttrTargetPort = "target_port"
resNLBServiceAttrZone = "zone"
)
func resourceNLBServiceIDString(d general.ResourceIDStringer) string {
return general.ResourceIDString(d, "exoscale_nlb_service")
}
func resourceNLBService() *schema.Resource {
s := map[string]*schema.Schema{
resNLBServiceAttrDescription: {
Type: schema.TypeString,
Optional: true,
Description: "A free-form text describing the NLB service.",
},
resNLBServiceAttrHealthcheck: {
Description: "The service health checking configuration.",
Type: schema.TypeSet,
Required: true,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
resNLBServiceAttrHealthcheckInterval: {
Type: schema.TypeInt,
Optional: true,
Default: defaultNLBServiceHealthcheckInterval,
Description: "The healthcheck interval in seconds (default: `10`).",
},
resNLBServiceAttrHealthcheckMode: {
Type: schema.TypeString,
Optional: true,
Default: defaultNLBServiceHealthcheckMode,
Description: "The healthcheck mode (`tcp`|`http`|`https`; default: `tcp`).",
},
resNLBServiceAttrHealthcheckPort: {
Type: schema.TypeInt,
Required: true,
Description: "The NLB service (TCP/UDP) port.",
},
resNLBServiceAttrHealthcheckRetries: {
Type: schema.TypeInt,
Optional: true,
Default: defaultNLBServiceHealthcheckRetries,
Description: "The healthcheck retries (default: `1`).",
},
resNLBServiceAttrHealthcheckTimeout: {
Type: schema.TypeInt,
Optional: true,
Default: defaultNLBServiceHealthcheckTimeout,
Description: "The healthcheck timeout (seconds; default: `5`).",
},
resNLBServiceAttrHealthcheckTLSSNI: {
Type: schema.TypeString,
Optional: true,
Description: "The healthcheck TLS SNI server name (only if `mode` is `https`).",
},
resNLBServiceAttrHealthcheckURI: {
Type: schema.TypeString,
Optional: true,
Description: "The healthcheck URI (must be set only if `mode` is `http(s)`).",
},
},
},
},
resNLBServiceAttrInstancePoolID: {
Type: schema.TypeString,
Required: true,
ForceNew: true,
Description: "The [exoscale_instance_pool](./instance_pool.md) (ID) to forward traffic to.",
},
resNLBServiceAttrName: {
Type: schema.TypeString,
Required: true,
Description: "The NLB service name.",
},
resNLBServiceAttrNLBID: {
Type: schema.TypeString,
Required: true,
ForceNew: true,
Description: "The parent [exoscale_nlb](./nlb.md) ID.",
},
resNLBServiceAttrPort: {
Type: schema.TypeInt,
Required: true,
Description: "The healthcheck port.",
},
resNLBServiceAttrProtocol: {
Type: schema.TypeString,
Optional: true,
Default: defaultNLBServiceProtocol,
Description: "The protocol (`tcp`|`udp`; default: `tcp`).",
},
resNLBServiceAttrState: {
Type: schema.TypeString,
Computed: true,
},
resNLBServiceAttrStrategy: {
Type: schema.TypeString,
Optional: true,
Default: defaulNLBServiceStrategy,
Description: "The strategy (`round-robin`|`source-hash`; default: `round-robin`).",
},
resNLBServiceAttrTargetPort: {
Type: schema.TypeInt,
Required: true,
Description: "The (TCP/UDP) port to forward traffic to (on target instance pool members).",
},
resNLBServiceAttrZone: {
Type: schema.TypeString,
Required: true,
ForceNew: true,
Description: "The Exoscale [Zone](https://www.exoscale.com/datacenters/) name.",
},
}
return &schema.Resource{
Schema: s,
Description: `Manage Exoscale [Network Load Balancer (NLB)](https://community.exoscale.com/documentation/compute/network-load-balancer/) Services.`,
CreateContext: resourceNLBServiceCreate,
ReadContext: resourceNLBServiceRead,
UpdateContext: resourceNLBServiceUpdate,
DeleteContext: resourceNLBServiceDelete,
Importer: &schema.ResourceImporter{
StateContext: func(ctx context.Context, d *schema.ResourceData, _ interface{}) ([]*schema.ResourceData, error) {
zonedRes, err := zonedStateContextFunc(ctx, d, nil)
if err != nil {
return nil, err
}
d = zonedRes[0]
parts := strings.SplitN(d.Id(), "/", 2)
if len(parts) != 2 {
return nil, fmt.Errorf(`invalid ID %q, expected format "<NLB-ID>/<SERVICE-ID>@<ZONE>"`, d.Id())
}
d.SetId(parts[1])
if err := d.Set(resNLBServiceAttrNLBID, parts[0]); err != nil {
return nil, err
}
return []*schema.ResourceData{d}, nil
},
},
Timeouts: &schema.ResourceTimeout{
Create: schema.DefaultTimeout(config.DefaultTimeout),
Read: schema.DefaultTimeout(config.DefaultTimeout),
Update: schema.DefaultTimeout(config.DefaultTimeout),
Delete: schema.DefaultTimeout(config.DefaultTimeout),
},
}
}
func resourceNLBServiceCreate(ctx context.Context, d *schema.ResourceData, meta interface{}) diag.Diagnostics {
tflog.Debug(ctx, "beginning create", map[string]interface{}{
"id": resourceNLBServiceIDString(d),
})
zone := d.Get(resNLBServiceAttrZone).(string)
ctx, cancel := context.WithTimeout(ctx, d.Timeout(schema.TimeoutCreate))
ctx = exoapi.WithEndpoint(ctx, exoapi.NewReqEndpoint(getEnvironment(meta), zone))
defer cancel()
client := getClient(meta)
nlb, err := client.GetNetworkLoadBalancer(ctx, zone, d.Get(resNLBServiceAttrNLBID).(string))
if err != nil {
return diag.FromErr(err)
}
healthcheck := d.Get("healthcheck").(*schema.Set).List()[0].(map[string]interface{})
nlbServiceHealthcheck := new(egoscale.NetworkLoadBalancerServiceHealthcheck)
nlbServiceHealthcheckInterval := time.Duration(healthcheck[resNLBServiceAttrHealthcheckInterval].(int)) * time.Second
nlbServiceHealthcheck.Interval = &nlbServiceHealthcheckInterval
nlbServiceHealthcheckMode := healthcheck[resNLBServiceAttrHealthcheckMode].(string)
nlbServiceHealthcheck.Mode = &nlbServiceHealthcheckMode
nlbServiceHealthcheckPort := uint16(healthcheck[resNLBServiceAttrHealthcheckPort].(int))
nlbServiceHealthcheck.Port = &nlbServiceHealthcheckPort
nlbServiceHealthcheckRetries := int64(healthcheck[resNLBServiceAttrHealthcheckRetries].(int))
nlbServiceHealthcheck.Retries = &nlbServiceHealthcheckRetries
nlbServiceHealthcheckTimeout := time.Duration(healthcheck[resNLBServiceAttrHealthcheckTimeout].(int)) * time.Second
nlbServiceHealthcheck.Timeout = &nlbServiceHealthcheckTimeout
if strings.HasPrefix(nlbServiceHealthcheckMode, "http") {
if v, ok := healthcheck[resNLBServiceAttrHealthcheckTLSSNI]; ok && v.(string) != "" {
s := v.(string)
nlbServiceHealthcheck.TLSSNI = &s
}
if v, ok := healthcheck[resNLBServiceAttrHealthcheckURI]; ok {
s := v.(string)
nlbServiceHealthcheck.URI = &s
}
}
nlbService := new(egoscale.NetworkLoadBalancerService)
nlbServiceName := d.Get(resNLBServiceAttrName).(string)
nlbService.Name = &nlbServiceName
if v, ok := d.GetOk(resNLBServiceAttrDescription); ok {
s := v.(string)
nlbService.Description = &s
}
nlbService.Healthcheck = nlbServiceHealthcheck
nlbServiceInstancePoolID := d.Get(resNLBServiceAttrInstancePoolID).(string)
nlbService.InstancePoolID = &nlbServiceInstancePoolID
nlbServicePort := uint16(d.Get(resNLBServiceAttrPort).(int))
nlbService.Port = &nlbServicePort
nlbServiceProtocol := d.Get(resNLBServiceAttrProtocol).(string)
nlbService.Protocol = &nlbServiceProtocol
nlbServiceStrategy := d.Get(resNLBServiceAttrStrategy).(string)
nlbService.Strategy = &nlbServiceStrategy
nlbServiceTargetPort := uint16(d.Get(resNLBServiceAttrTargetPort).(int))
nlbService.TargetPort = &nlbServiceTargetPort
nlbService, err = client.CreateNetworkLoadBalancerService(ctx, zone, nlb, nlbService)
if err != nil {
return diag.FromErr(err)
}
d.SetId(*nlbService.ID)
tflog.Debug(ctx, "create finished successfully", map[string]interface{}{
"id": resourceNLBServiceIDString(d),
})
return resourceNLBServiceRead(ctx, d, meta)
}
func resourceNLBServiceRead(ctx context.Context, d *schema.ResourceData, meta interface{}) diag.Diagnostics {
tflog.Debug(ctx, "beginning read", map[string]interface{}{
"id": resourceNLBServiceIDString(d),
})
zone := d.Get(resNLBServiceAttrZone).(string)
ctx, cancel := context.WithTimeout(ctx, d.Timeout(schema.TimeoutRead))
ctx = exoapi.WithEndpoint(ctx, exoapi.NewReqEndpoint(getEnvironment(meta), zone))
defer cancel()
client := getClient(meta)
nlb, err := client.GetNetworkLoadBalancer(ctx, zone, d.Get(resNLBServiceAttrNLBID).(string))
if err != nil {
if errors.Is(err, exoapi.ErrNotFound) {
// Parent NLB doesn't exist anymore, so does the NLB service.
d.SetId("")
return nil
}
return diag.FromErr(err)
}
var nlbService *egoscale.NetworkLoadBalancerService
for _, s := range nlb.Services {
if *s.ID == d.Id() {
nlbService = s
break
}
}
if nlbService == nil {
// Resource doesn't exist anymore, signaling the core to remove it from the state.
d.SetId("")
return nil
}
tflog.Debug(ctx, "read finished successfully", map[string]interface{}{
"id": resourceNLBServiceIDString(d),
})
return diag.FromErr(resourceNLBServiceApply(ctx, d, nlbService))
}
func resourceNLBServiceUpdate(ctx context.Context, d *schema.ResourceData, meta interface{}) diag.Diagnostics {
tflog.Debug(ctx, "beginning update", map[string]interface{}{
"id": resourceNLBServiceIDString(d),
})
zone := d.Get(resNLBServiceAttrZone).(string)
ctx, cancel := context.WithTimeout(ctx, d.Timeout(schema.TimeoutUpdate))
ctx = exoapi.WithEndpoint(ctx, exoapi.NewReqEndpoint(getEnvironment(meta), zone))
defer cancel()
client := getClient(meta)
nlb, err := client.GetNetworkLoadBalancer(ctx, zone, d.Get(resNLBServiceAttrNLBID).(string))
if err != nil {
return diag.FromErr(err)
}
var nlbService *egoscale.NetworkLoadBalancerService
for _, s := range nlb.Services {
if *s.ID == d.Id() {
nlbService = s
break
}
}
if nlbService == nil {
return diag.Errorf("Network Load Balancer Service %q not found", d.Id())
}
var updated bool
if d.HasChange(resNLBServiceAttrName) {
v := d.Get(resNLBServiceAttrName).(string)
nlbService.Name = &v
updated = true
}
if d.HasChange(resNLBServiceAttrDescription) {
v := d.Get(resNLBServiceAttrDescription).(string)
nlbService.Description = &v
updated = true
}
if d.HasChange(resNLBServiceAttrPort) {
v := uint16(d.Get(resNLBServiceAttrPort).(int))
nlbService.Port = &v
updated = true
}
if d.HasChange(resNLBServiceAttrProtocol) {
v := d.Get(resNLBServiceAttrProtocol).(string)
nlbService.Protocol = &v
updated = true
}
if d.HasChange(resNLBServiceAttrStrategy) {
v := d.Get(resNLBServiceAttrStrategy).(string)
nlbService.Strategy = &v
updated = true
}
if d.HasChange(resNLBServiceAttrTargetPort) {
v := uint16(d.Get(resNLBServiceAttrTargetPort).(int))
nlbService.TargetPort = &v
updated = true
}
if d.HasChange("healthcheck") {
healthcheck := d.Get("healthcheck").(*schema.Set).List()[0].(map[string]interface{})
nlbServiceHealthcheckInterval := time.Duration(healthcheck[resNLBServiceAttrHealthcheckInterval].(int)) * time.Second
nlbService.Healthcheck.Interval = &nlbServiceHealthcheckInterval
nlbServiceHealthcheckMode := healthcheck[resNLBServiceAttrHealthcheckMode].(string)
nlbService.Healthcheck.Mode = &nlbServiceHealthcheckMode
nlbServiceHealthcheckPort := uint16(healthcheck[resNLBServiceAttrHealthcheckPort].(int))
nlbService.Healthcheck.Port = &nlbServiceHealthcheckPort
nlbServiceHealthcheckRetries := int64(healthcheck[resNLBServiceAttrHealthcheckRetries].(int))
nlbService.Healthcheck.Retries = &nlbServiceHealthcheckRetries
nlbServiceHealthcheckTimeout := time.Duration(healthcheck[resNLBServiceAttrHealthcheckTimeout].(int)) * time.Second
nlbService.Healthcheck.Timeout = &nlbServiceHealthcheckTimeout
if strings.HasPrefix(nlbServiceHealthcheckMode, "http") {
if v, ok := healthcheck[resNLBServiceAttrHealthcheckTLSSNI]; ok && v.(string) != "" {
s := v.(string)
nlbService.Healthcheck.TLSSNI = &s
}
if v, ok := healthcheck[resNLBServiceAttrHealthcheckURI]; ok {
s := v.(string)
nlbService.Healthcheck.URI = &s
}
// We need a need struct to remove URI and TLSSNI
} else {
*nlbService.Healthcheck = egoscale.NetworkLoadBalancerServiceHealthcheck{
Interval: &nlbServiceHealthcheckInterval,
Mode: &nlbServiceHealthcheckMode,
Port: &nlbServiceHealthcheckPort,
Retries: &nlbServiceHealthcheckRetries,
Timeout: &nlbServiceHealthcheckTimeout,
}
}
updated = true
}
if updated {
nlb, err := client.GetNetworkLoadBalancer(ctx, zone, d.Get(resNLBServiceAttrNLBID).(string))
if err != nil {
return diag.FromErr(err)
}
if err = client.UpdateNetworkLoadBalancerService(ctx, zone, nlb, nlbService); err != nil {
return diag.FromErr(err)
}
}
tflog.Debug(ctx, "update finished successfully", map[string]interface{}{
"id": resourceNLBServiceIDString(d),
})
return resourceNLBServiceRead(ctx, d, meta)
}
func resourceNLBServiceDelete(ctx context.Context, d *schema.ResourceData, meta interface{}) diag.Diagnostics {
tflog.Debug(ctx, "beginning delete", map[string]interface{}{
"id": resourceNLBServiceIDString(d),
})
zone := d.Get(resNLBServiceAttrZone).(string)
ctx, cancel := context.WithTimeout(ctx, d.Timeout(schema.TimeoutDelete))
ctx = exoapi.WithEndpoint(ctx, exoapi.NewReqEndpoint(getEnvironment(meta), zone))
defer cancel()
client := getClient(meta)
nlb, err := client.GetNetworkLoadBalancer(ctx, zone, d.Get(resNLBServiceAttrNLBID).(string))
if err != nil {
return diag.FromErr(err)
}
nlbServiceID := d.Id()
err = client.DeleteNetworkLoadBalancerService(ctx, zone, nlb, &egoscale.NetworkLoadBalancerService{ID: &nlbServiceID})
if err != nil {
return diag.FromErr(err)
}
tflog.Debug(ctx, "delete finished successfully", map[string]interface{}{
"id": resourceNLBServiceIDString(d),
})
return nil
}
func resourceNLBServiceApply(
_ context.Context,
d *schema.ResourceData,
nlbService *egoscale.NetworkLoadBalancerService,
) error {
if err := d.Set(resNLBServiceAttrDescription, defaultString(nlbService.Description, "")); err != nil {
return err
}
healthcheck := d.Get(resNLBServiceAttrHealthcheck).(*schema.Set)
if err := d.Set(resNLBServiceAttrHealthcheck, schema.NewSet(healthcheck.F, []interface{}{
map[string]interface{}{
resNLBServiceAttrHealthcheckInterval: int(nlbService.Healthcheck.Interval.Seconds()),
resNLBServiceAttrHealthcheckMode: *nlbService.Healthcheck.Mode,
resNLBServiceAttrHealthcheckPort: int(*nlbService.Healthcheck.Port),
resNLBServiceAttrHealthcheckRetries: int(defaultInt64(nlbService.Healthcheck.Retries, 0)),
resNLBServiceAttrHealthcheckTLSSNI: defaultString(nlbService.Healthcheck.TLSSNI, ""),
resNLBServiceAttrHealthcheckTimeout: int(nlbService.Healthcheck.Timeout.Seconds()),
resNLBServiceAttrHealthcheckURI: defaultString(nlbService.Healthcheck.URI, ""),
},
})); err != nil {
return err
}
if err := d.Set(resNLBServiceAttrInstancePoolID, *nlbService.InstancePoolID); err != nil {
return err
}
if err := d.Set(resNLBServiceAttrName, *nlbService.Name); err != nil {
return err
}
if err := d.Set(resNLBServiceAttrPort, *nlbService.Port); err != nil {
return err
}
if err := d.Set(resNLBServiceAttrProtocol, *nlbService.Protocol); err != nil {
return err
}
if err := d.Set(resNLBServiceAttrState, *nlbService.State); err != nil {
return err
}
if err := d.Set(resNLBServiceAttrStrategy, *nlbService.Strategy); err != nil {
return err
}
if err := d.Set(resNLBServiceAttrTargetPort, *nlbService.TargetPort); err != nil {
return err
}
return nil
}