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resource_virtual_listener.go
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resource_virtual_listener.go
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package ddcloud
import (
"fmt"
"log"
"github.com/DimensionDataResearch/dd-cloud-compute-terraform/retry"
"github.com/DimensionDataResearch/go-dd-cloud-compute/compute"
"github.com/hashicorp/terraform/helper/schema"
)
const (
resourceKeyVirtualListenerName = "name"
resourceKeyVirtualListenerDescription = "description"
resourceKeyVirtualListenerType = "type"
resourceKeyVirtualListenerProtocol = "protocol"
resourceKeyVirtualListenerIPv4Address = "ipv4"
resourceKeyVirtualListenerPort = "port"
resourceKeyVirtualListenerEnabled = "enabled"
resourceKeyVirtualListenerConnectionLimit = "connection_limit"
resourceKeyVirtualListenerConnectionRateLimit = "connection_rate_limit"
resourceKeyVirtualListenerSourcePortPreservation = "source_port_preservation"
resourceKeyVirtualListenerPoolID = "pool"
resourceKeyVirtualListenerPersistenceProfileName = "persistence_profile"
resourceKeyVirtualListenerSSLOffloadProfileID = "ssl_offload_profile"
resourceKeyVirtualListenerIRuleNames = "irules"
resourceKeyVirtualListenerOptimizationProfile = "optimization_profile"
resourceKeyVirtualListenerNetworkDomainID = "networkdomain"
)
func resourceVirtualListener() *schema.Resource {
return &schema.Resource{
Create: resourceVirtualListenerCreate,
Read: resourceVirtualListenerRead,
Exists: resourceVirtualListenerExists,
Update: resourceVirtualListenerUpdate,
Delete: resourceVirtualListenerDelete,
Schema: map[string]*schema.Schema{
resourceKeyVirtualListenerName: &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
resourceKeyVirtualListenerDescription: &schema.Schema{
Type: schema.TypeString,
Optional: true,
Default: "",
},
resourceKeyVirtualListenerType: &schema.Schema{
Type: schema.TypeString,
Optional: true,
ForceNew: true,
Default: compute.VirtualListenerTypeStandard,
ValidateFunc: func(data interface{}, fieldName string) (messages []string, errors []error) {
listenerType := data.(string)
switch listenerType {
case compute.VirtualListenerTypeStandard:
case compute.VirtualListenerTypePerformanceLayer4:
return
default:
errors = append(errors, fmt.Errorf("invalid virtual listener type '%s'", listenerType))
}
return
},
},
resourceKeyVirtualListenerProtocol: &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
resourceKeyVirtualListenerIPv4Address: &schema.Schema{
Type: schema.TypeString,
Optional: true,
Computed: true,
Default: nil,
},
resourceKeyVirtualListenerPort: &schema.Schema{
Type: schema.TypeInt,
Optional: true,
Default: 0,
ForceNew: true,
},
resourceKeyVirtualListenerEnabled: &schema.Schema{
Type: schema.TypeBool,
Optional: true,
Default: true,
},
resourceKeyVirtualListenerConnectionLimit: &schema.Schema{
Type: schema.TypeInt,
Optional: true,
Default: 20000,
ValidateFunc: func(data interface{}, fieldName string) (messages []string, errors []error) {
connectionRate := data.(int)
if connectionRate > 0 {
return
}
errors = append(errors,
fmt.Errorf("Connection rate ('%s') must be greater than 0", fieldName),
)
return
},
},
resourceKeyVirtualListenerConnectionRateLimit: &schema.Schema{
Type: schema.TypeInt,
Optional: true,
Default: 2000,
ValidateFunc: func(data interface{}, fieldName string) (messages []string, errors []error) {
connectionRate := data.(int)
if connectionRate > 0 {
return
}
errors = append(errors,
fmt.Errorf("Connection rate limit ('%s') must be greater than 0", fieldName),
)
return
},
},
resourceKeyVirtualListenerSourcePortPreservation: &schema.Schema{
Type: schema.TypeString,
Optional: true,
Default: compute.SourcePortPreservationEnabled,
},
resourceKeyVirtualListenerPoolID: &schema.Schema{
Type: schema.TypeString,
Optional: true,
Default: nil,
},
resourceKeyVirtualListenerPersistenceProfileName: &schema.Schema{
Type: schema.TypeString,
Optional: true,
Default: "",
},
resourceKeyVirtualListenerSSLOffloadProfileID: &schema.Schema{
Type: schema.TypeString,
Optional: true,
Default: nil,
},
resourceKeyVirtualListenerIRuleNames: &schema.Schema{
Type: schema.TypeSet,
Optional: true,
Default: nil,
Elem: &schema.Schema{
Type: schema.TypeString,
},
Set: func(item interface{}) int {
iRuleID := item.(string)
return schema.HashString(iRuleID)
},
},
resourceKeyVirtualListenerOptimizationProfile: &schema.Schema{
Type: schema.TypeString,
Optional: true,
Default: nil,
},
resourceKeyVirtualListenerNetworkDomainID: &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
// TODO: Add remaining properties.
},
}
}
func resourceVirtualListenerCreate(data *schema.ResourceData, provider interface{}) error {
networkDomainID := data.Get(resourceKeyVirtualListenerNetworkDomainID).(string)
name := data.Get(resourceKeyVirtualListenerName).(string)
description := data.Get(resourceKeyVirtualListenerDescription).(string)
log.Printf("Create virtual listener '%s' ('%s') in network domain '%s'.", name, description, networkDomainID)
providerState := provider.(*providerState)
apiClient := providerState.Client()
propertyHelper := propertyHelper(data)
var virtualListenerID string
operationDescription := fmt.Sprintf("Create virtual listener '%s' ", name)
operationError := providerState.RetryAction(operationDescription, func(context retry.Context) {
// Map from names to Ids, as required.
persistenceProfileID, err := propertyHelper.GetVirtualListenerPersistenceProfileID(apiClient)
if err != nil {
context.Fail(err)
return
}
iRuleIDs, err := propertyHelper.GetVirtualListenerIRuleIDs(apiClient)
if err != nil {
context.Fail(err)
return
}
asyncLock := providerState.AcquireAsyncOperationLock(operationDescription)
defer asyncLock.Release()
virtualListenerID, err = apiClient.CreateVirtualListener(compute.NewVirtualListenerConfiguration{
Name: name,
Description: description,
Type: data.Get(resourceKeyVirtualListenerType).(string),
Protocol: data.Get(resourceKeyVirtualListenerProtocol).(string),
Port: data.Get(resourceKeyVirtualListenerPort).(int),
ListenerIPAddress: propertyHelper.GetOptionalString(resourceKeyVirtualListenerIPv4Address, false),
Enabled: data.Get(resourceKeyVirtualListenerEnabled).(bool),
ConnectionLimit: data.Get(resourceKeyVirtualListenerConnectionLimit).(int),
ConnectionRateLimit: data.Get(resourceKeyVirtualListenerConnectionRateLimit).(int),
SourcePortPreservation: data.Get(resourceKeyVirtualListenerSourcePortPreservation).(string),
PoolID: propertyHelper.GetOptionalString(resourceKeyVirtualListenerPoolID, false),
PersistenceProfileID: persistenceProfileID,
SSLOffloadProfileID: propertyHelper.GetOptionalString(resourceKeyVirtualListenerSSLOffloadProfileID, false),
IRuleIDs: iRuleIDs,
OptimizationProfile: propertyHelper.GetOptionalString(resourceKeyVirtualListenerOptimizationProfile, false),
NetworkDomainID: networkDomainID,
})
if err != nil {
if compute.IsResourceBusyError(err) {
context.Retry()
} else if compute.IsNoIPAddressAvailableError(err) {
log.Printf("There are no free public IPv4 addresses in network domain '%s'; requesting allocation of a new address block...", networkDomainID)
publicIPBlock, err := addPublicIPBlock(networkDomainID, apiClient)
if err != nil {
context.Fail(err)
return
}
log.Printf("Allocated a new public IPv4 address block '%s' (%d addresses, starting at '%s').",
publicIPBlock.ID, publicIPBlock.Size, publicIPBlock.BaseIP,
)
context.Retry() // We'll use the new block next time around.
} else {
context.Fail(err)
}
}
})
if operationError != nil {
return operationError
}
data.SetId(virtualListenerID)
log.Printf("Successfully created virtual listener '%s'.", virtualListenerID)
virtualListener, err := apiClient.GetVirtualListener(virtualListenerID)
if err != nil {
return err
}
if virtualListener == nil {
return fmt.Errorf("cannot find newly-created virtual listener with Id '%s'", virtualListenerID)
}
data.Set(resourceKeyVirtualListenerIPv4Address, virtualListener.ListenerIPAddress)
return nil
}
func resourceVirtualListenerExists(data *schema.ResourceData, provider interface{}) (bool, error) {
id := data.Id()
log.Printf("Check if virtual listener '%s' exists...", id)
providerState := provider.(*providerState)
apiClient := providerState.Client()
vipPool, err := apiClient.GetVirtualListener(id)
if err != nil {
return false, err
}
exists := vipPool != nil
log.Printf("virtual listener '%s' exists: %t.", id, exists)
return exists, nil
}
func resourceVirtualListenerRead(data *schema.ResourceData, provider interface{}) error {
id := data.Id()
log.Printf("Read virtual listener '%s'...", id)
providerState := provider.(*providerState)
apiClient := providerState.Client()
virtualListener, err := apiClient.GetVirtualListener(id)
if err != nil {
return err
}
if virtualListener == nil {
data.SetId("") // Virtual listener has been deleted
return nil
}
data.Set(resourceKeyVirtualListenerDescription, virtualListener.Description)
data.Set(resourceKeyVirtualListenerEnabled, virtualListener.Enabled)
data.Set(resourceKeyVirtualListenerConnectionLimit, virtualListener.ConnectionLimit)
data.Set(resourceKeyVirtualListenerConnectionRateLimit, virtualListener.ConnectionRateLimit)
data.Set(resourceKeyVirtualListenerSourcePortPreservation, virtualListener.SourcePortPreservation)
data.Set(resourceKeyVirtualListenerPersistenceProfileName, virtualListener.PersistenceProfile.Name)
data.Set(resourceKeyVirtualListenerSSLOffloadProfileID, virtualListener.SSLOffloadProfile.ID)
data.Set(resourceKeyVirtualListenerIPv4Address, virtualListener.ListenerIPAddress)
propertyHelper := propertyHelper(data)
propertyHelper.SetVirtualListenerIRules(virtualListener.IRules)
// TODO: Capture other properties.
return nil
}
func resourceVirtualListenerUpdate(data *schema.ResourceData, provider interface{}) error {
id := data.Id()
log.Printf("Update virtual listener '%s'...", id)
providerState := provider.(*providerState)
apiClient := providerState.Client()
configuration := &compute.EditVirtualListenerConfiguration{}
propertyHelper := propertyHelper(data)
// Effectively, these properties must always be supplied.
configuration.Description = propertyHelper.GetOptionalString(resourceKeyVirtualListenerDescription, true)
configuration.Enabled = propertyHelper.GetOptionalBool(resourceKeyVirtualListenerEnabled)
if data.HasChange(resourceKeyVirtualListenerConnectionLimit) {
configuration.ConnectionLimit = propertyHelper.GetOptionalInt(resourceKeyVirtualListenerConnectionLimit, false)
}
if data.HasChange(resourceKeyVirtualListenerConnectionRateLimit) {
configuration.ConnectionRateLimit = propertyHelper.GetOptionalInt(resourceKeyVirtualListenerConnectionRateLimit, false)
}
if data.HasChange(resourceKeyVirtualListenerSourcePortPreservation) {
configuration.SourcePortPreservation = propertyHelper.GetOptionalString(resourceKeyVirtualListenerSourcePortPreservation, true)
}
if data.HasChange(resourceKeyVirtualListenerPoolID) {
configuration.PoolID = propertyHelper.GetOptionalString(resourceKeyVirtualListenerPoolID, true)
}
if data.HasChange(resourceKeyVirtualListenerSSLOffloadProfileID) {
configuration.SSLOffloadProfileID = propertyHelper.GetOptionalString(resourceKeyVirtualListenerSSLOffloadProfileID, false)
}
if data.HasChange(resourceKeyVirtualListenerPersistenceProfileName) {
persistenceProfile, err := propertyHelper.GetVirtualListenerPersistenceProfile(apiClient)
if err != nil {
return err
}
configuration.PersistenceProfileID = &persistenceProfile.ID
}
if data.HasChange(resourceKeyVirtualListenerIRuleNames) {
iRuleIDs, err := propertyHelper.GetVirtualListenerIRuleIDs(apiClient)
if err != nil {
return err
}
configuration.IRuleIDs = &iRuleIDs
}
return apiClient.EditVirtualListener(id, *configuration)
}
func resourceVirtualListenerDelete(data *schema.ResourceData, provider interface{}) error {
id := data.Id()
name := data.Get(resourceKeyVirtualListenerName).(string)
networkDomainID := data.Get(resourceKeyVirtualListenerNetworkDomainID)
log.Printf("Delete virtual listener '%s' ('%s') from network domain '%s'...", name, id, networkDomainID)
providerState := provider.(*providerState)
apiClient := providerState.Client()
operationDescription := fmt.Sprintf("Delete virtual listener '%s", id)
return providerState.RetryAction(operationDescription, func(context retry.Context) {
// CloudControl has issues if more than one asynchronous operation is initated at a time (returns UNEXPECTED_ERROR).
asyncLock := providerState.AcquireAsyncOperationLock(operationDescription)
defer asyncLock.Release() // Released at the end of the current attempt.
err := apiClient.DeleteVirtualListener(id)
if err != nil {
if compute.IsResourceBusyError(err) {
context.Retry()
} else {
context.Fail(err)
}
}
asyncLock.Release()
})
}