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provider.go
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provider.go
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package azurerm
import (
"fmt"
"reflect"
"strings"
"sync"
"github.com/hashicorp/go-multierror"
"github.com/hashicorp/terraform/helper/mutexkv"
"github.com/hashicorp/terraform/helper/resource"
"github.com/hashicorp/terraform/helper/schema"
"github.com/hashicorp/terraform/terraform"
riviera "github.com/jen20/riviera/azure"
)
// Provider returns a terraform.ResourceProvider.
func Provider() terraform.ResourceProvider {
return &schema.Provider{
Schema: map[string]*schema.Schema{
"subscription_id": {
Type: schema.TypeString,
Required: true,
DefaultFunc: schema.EnvDefaultFunc("ARM_SUBSCRIPTION_ID", ""),
},
"client_id": {
Type: schema.TypeString,
Required: true,
DefaultFunc: schema.EnvDefaultFunc("ARM_CLIENT_ID", ""),
},
"client_secret": {
Type: schema.TypeString,
Required: true,
DefaultFunc: schema.EnvDefaultFunc("ARM_CLIENT_SECRET", ""),
},
"tenant_id": {
Type: schema.TypeString,
Required: true,
DefaultFunc: schema.EnvDefaultFunc("ARM_TENANT_ID", ""),
},
},
ResourcesMap: map[string]*schema.Resource{
// These resources use the Azure ARM SDK
"azurerm_availability_set": resourceArmAvailabilitySet(),
"azurerm_cdn_endpoint": resourceArmCdnEndpoint(),
"azurerm_cdn_profile": resourceArmCdnProfile(),
"azurerm_local_network_gateway": resourceArmLocalNetworkGateway(),
"azurerm_network_interface": resourceArmNetworkInterface(),
"azurerm_network_security_group": resourceArmNetworkSecurityGroup(),
"azurerm_network_security_rule": resourceArmNetworkSecurityRule(),
"azurerm_public_ip": resourceArmPublicIp(),
"azurerm_route": resourceArmRoute(),
"azurerm_route_table": resourceArmRouteTable(),
"azurerm_servicebus_namespace": resourceArmServiceBusNamespace(),
"azurerm_storage_account": resourceArmStorageAccount(),
"azurerm_storage_blob": resourceArmStorageBlob(),
"azurerm_storage_container": resourceArmStorageContainer(),
"azurerm_storage_queue": resourceArmStorageQueue(),
"azurerm_storage_table": resourceArmStorageTable(),
"azurerm_subnet": resourceArmSubnet(),
"azurerm_template_deployment": resourceArmTemplateDeployment(),
"azurerm_traffic_manager_endpoint": resourceArmTrafficManagerEndpoint(),
"azurerm_traffic_manager_profile": resourceArmTrafficManagerProfile(),
"azurerm_virtual_machine": resourceArmVirtualMachine(),
"azurerm_virtual_machine_scale_set": resourceArmVirtualMachineScaleSet(),
"azurerm_virtual_network": resourceArmVirtualNetwork(),
"azurerm_virtual_network_peering": resourceArmVirtualNetworkPeering(),
// These resources use the Riviera SDK
"azurerm_dns_a_record": resourceArmDnsARecord(),
"azurerm_dns_aaaa_record": resourceArmDnsAAAARecord(),
"azurerm_dns_cname_record": resourceArmDnsCNameRecord(),
"azurerm_dns_mx_record": resourceArmDnsMxRecord(),
"azurerm_dns_ns_record": resourceArmDnsNsRecord(),
"azurerm_dns_srv_record": resourceArmDnsSrvRecord(),
"azurerm_dns_txt_record": resourceArmDnsTxtRecord(),
"azurerm_dns_zone": resourceArmDnsZone(),
"azurerm_resource_group": resourceArmResourceGroup(),
"azurerm_search_service": resourceArmSearchService(),
"azurerm_sql_database": resourceArmSqlDatabase(),
"azurerm_sql_firewall_rule": resourceArmSqlFirewallRule(),
"azurerm_sql_server": resourceArmSqlServer(),
},
ConfigureFunc: providerConfigure,
}
}
// Config is the configuration structure used to instantiate a
// new Azure management client.
type Config struct {
ManagementURL string
SubscriptionID string
ClientID string
ClientSecret string
TenantID string
validateCredentialsOnce sync.Once
}
func (c *Config) validate() error {
var err *multierror.Error
if c.SubscriptionID == "" {
err = multierror.Append(err, fmt.Errorf("Subscription ID must be configured for the AzureRM provider"))
}
if c.ClientID == "" {
err = multierror.Append(err, fmt.Errorf("Client ID must be configured for the AzureRM provider"))
}
if c.ClientSecret == "" {
err = multierror.Append(err, fmt.Errorf("Client Secret must be configured for the AzureRM provider"))
}
if c.TenantID == "" {
err = multierror.Append(err, fmt.Errorf("Tenant ID must be configured for the AzureRM provider"))
}
return err.ErrorOrNil()
}
func providerConfigure(d *schema.ResourceData) (interface{}, error) {
config := &Config{
SubscriptionID: d.Get("subscription_id").(string),
ClientID: d.Get("client_id").(string),
ClientSecret: d.Get("client_secret").(string),
TenantID: d.Get("tenant_id").(string),
}
if err := config.validate(); err != nil {
return nil, err
}
client, err := config.getArmClient()
if err != nil {
return nil, err
}
err = registerAzureResourceProvidersWithSubscription(client.rivieraClient)
if err != nil {
return nil, err
}
return client, nil
}
func registerProviderWithSubscription(providerName string, client *riviera.Client) error {
request := client.NewRequest()
request.Command = riviera.RegisterResourceProvider{
Namespace: providerName,
}
response, err := request.Execute()
if err != nil {
return fmt.Errorf("Cannot request provider registration for Azure Resource Manager: %s.", err)
}
if !response.IsSuccessful() {
return fmt.Errorf("Credentials for acessing the Azure Resource Manager API are likely " +
"to be incorrect, or\n the service principal does not have permission to use " +
"the Azure Service Management\n API.")
}
return nil
}
var providerRegistrationOnce sync.Once
// registerAzureResourceProvidersWithSubscription uses the providers client to register
// all Azure resource providers which the Terraform provider may require (regardless of
// whether they are actually used by the configuration or not). It was confirmed by Microsoft
// that this is the approach their own internal tools also take.
func registerAzureResourceProvidersWithSubscription(client *riviera.Client) error {
var err error
providerRegistrationOnce.Do(func() {
// We register Microsoft.Compute during client initialization
providers := []string{"Microsoft.Network", "Microsoft.Cdn", "Microsoft.Storage", "Microsoft.Sql", "Microsoft.Search", "Microsoft.Resources", "Microsoft.ServiceBus"}
var wg sync.WaitGroup
wg.Add(len(providers))
for _, providerName := range providers {
go func(p string) {
defer wg.Done()
if innerErr := registerProviderWithSubscription(p, client); err != nil {
err = innerErr
}
}(providerName)
}
wg.Wait()
})
return err
}
// azureRMNormalizeLocation is a function which normalises human-readable region/location
// names (e.g. "West US") to the values used and returned by the Azure API (e.g. "westus").
// In state we track the API internal version as it is easier to go from the human form
// to the canonical form than the other way around.
func azureRMNormalizeLocation(location interface{}) string {
input := location.(string)
return strings.Replace(strings.ToLower(input), " ", "", -1)
}
// armMutexKV is the instance of MutexKV for ARM resources
var armMutexKV = mutexkv.NewMutexKV()
func azureStateRefreshFunc(resourceURI string, client *ArmClient, command riviera.APICall) resource.StateRefreshFunc {
return func() (interface{}, string, error) {
req := client.rivieraClient.NewRequestForURI(resourceURI)
req.Command = command
res, err := req.Execute()
if err != nil {
return nil, "", fmt.Errorf("Error executing %T command in azureStateRefreshFunc", req.Command)
}
var value reflect.Value
if reflect.ValueOf(res.Parsed).Kind() == reflect.Ptr {
value = reflect.ValueOf(res.Parsed).Elem()
} else {
value = reflect.ValueOf(res.Parsed)
}
for i := 0; i < value.NumField(); i++ { // iterates through every struct type field
tag := value.Type().Field(i).Tag // returns the tag string
tagValue := tag.Get("mapstructure")
if tagValue == "provisioningState" {
return res.Parsed, value.Field(i).Elem().String(), nil
}
}
panic(fmt.Errorf("azureStateRefreshFunc called on structure %T with no mapstructure:provisioningState tag. This is a bug", res.Parsed))
}
}